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authorMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
commit14c7b800eaa23e9da7c92c7c4df397d0c191f097 (patch)
treed840b6ec41ff74d1184ca1dcd7731d08f1e9ebbb /libSBRdec
parent78a801e4d716c6f2403cc56cf6c5b6f138f24b2f (diff)
downloadODR-AudioEnc-14c7b800eaa23e9da7c92c7c4df397d0c191f097.tar.gz
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Remove FDK-AAC
Diffstat (limited to 'libSBRdec')
-rw-r--r--libSBRdec/include/sbrdecoder.h337
-rw-r--r--libSBRdec/src/arm/env_calc_arm.cpp148
-rw-r--r--libSBRdec/src/arm/lpp_tran_arm.cpp151
-rw-r--r--libSBRdec/src/env_calc.cpp2229
-rw-r--r--libSBRdec/src/env_calc.h165
-rw-r--r--libSBRdec/src/env_dec.cpp852
-rw-r--r--libSBRdec/src/env_dec.h101
-rw-r--r--libSBRdec/src/env_extr.cpp1395
-rw-r--r--libSBRdec/src/env_extr.h319
-rw-r--r--libSBRdec/src/huff_dec.cpp120
-rw-r--r--libSBRdec/src/huff_dec.h100
-rw-r--r--libSBRdec/src/lpp_tran.cpp986
-rw-r--r--libSBRdec/src/lpp_tran.h242
-rw-r--r--libSBRdec/src/psbitdec.cpp593
-rw-r--r--libSBRdec/src/psbitdec.h103
-rw-r--r--libSBRdec/src/psdec.cpp1414
-rw-r--r--libSBRdec/src/psdec.h352
-rw-r--r--libSBRdec/src/psdec_hybrid.cpp652
-rw-r--r--libSBRdec/src/psdec_hybrid.h165
-rw-r--r--libSBRdec/src/sbr_crc.cpp183
-rw-r--r--libSBRdec/src/sbr_crc.h123
-rw-r--r--libSBRdec/src/sbr_deb.cpp90
-rw-r--r--libSBRdec/src/sbr_deb.h94
-rw-r--r--libSBRdec/src/sbr_dec.cpp1050
-rw-r--r--libSBRdec/src/sbr_dec.h210
-rw-r--r--libSBRdec/src/sbr_ram.cpp194
-rw-r--r--libSBRdec/src/sbr_ram.h158
-rw-r--r--libSBRdec/src/sbr_rom.cpp1414
-rw-r--r--libSBRdec/src/sbr_rom.h234
-rw-r--r--libSBRdec/src/sbr_scale.h123
-rw-r--r--libSBRdec/src/sbrdec_drc.cpp525
-rw-r--r--libSBRdec/src/sbrdec_drc.h151
-rw-r--r--libSBRdec/src/sbrdec_freq_sca.cpp812
-rw-r--r--libSBRdec/src/sbrdec_freq_sca.h107
-rw-r--r--libSBRdec/src/sbrdecoder.cpp1546
-rw-r--r--libSBRdec/src/transcendent.h355
36 files changed, 0 insertions, 17793 deletions
diff --git a/libSBRdec/include/sbrdecoder.h b/libSBRdec/include/sbrdecoder.h
deleted file mode 100644
index 13707e0..0000000
--- a/libSBRdec/include/sbrdecoder.h
+++ /dev/null
@@ -1,337 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/************************ Fraunhofer IIS SBR decoder library ******************
-
- Author(s):
- Description: SBR decoder front-end prototypes and definitions.
-
-******************************************************************************/
-
-#ifndef __SBRDECODER_H
-#define __SBRDECODER_H
-
-#include "common_fix.h"
-
-#include "FDK_bitstream.h"
-#include "FDK_audio.h"
-
-
-#define SBR_DEBUG_EXTHLP "\
---- SBR ---\n\
- 0x00000010 Ancillary data and SBR-Header\n\
- 0x00000020 SBR-Side info\n\
- 0x00000040 Decoded SBR-bitstream data, e.g. envelope data\n\
- 0x00000080 SBR-Bitstream statistics\n\
- 0x00000100 Miscellaneous SBR-messages\n\
- 0x00000200 SBR-Energies and gains in the adjustor\n\
- 0x00000400 Fatal SBR errors\n\
- 0x00000800 Transposer coefficients for inverse filtering\n\
-"
-
-/* Capability flags */
-#define CAPF_SBR_LP 0x00000001 /*!< Flag indicating library's capability of Low Power mode. */
-#define CAPF_SBR_HQ 0x00000002 /*!< Flag indicating library's capability of High Quality mode. */
-#define CAPF_SBR_DRM_BS 0x00000004 /*!< Flag indicating library's capability to decode DRM SBR data. */
-#define CAPF_SBR_CONCEALMENT 0x00000008 /*!< Flag indicating library's capability to conceal erroneous frames. */
-#define CAPF_SBR_DRC 0x00000010 /*!< Flag indicating library's capability for Dynamic Range Control. */
-#define CAPF_SBR_PS_MPEG 0x00000020 /*!< Flag indicating library's capability to do MPEG Parametric Stereo. */
-#define CAPF_SBR_PS_DRM 0x00000040 /*!< Flag indicating library's capability to do DRM Parametric Stereo. */
-
-typedef enum
-{
- SBRDEC_OK = 0, /*!< All fine. */
- /* SBRDEC_CONCEAL, */
- /* SBRDEC_NOSYNCH, */
- /* SBRDEC_ILLEGAL_PROGRAM, */
- /* SBRDEC_ILLEGAL_TAG, */
- /* SBRDEC_ILLEGAL_CHN_CONFIG, */
- /* SBRDEC_ILLEGAL_SECTION, */
- /* SBRDEC_ILLEGAL_SCFACTORS, */
- /* SBRDEC_ILLEGAL_PULSE_DATA, */
- /* SBRDEC_MAIN_PROFILE_NOT_IMPLEMENTED, */
- /* SBRDEC_GC_NOT_IMPLEMENTED, */
- /* SBRDEC_ILLEGAL_PLUS_ELE_ID, */
- SBRDEC_CREATE_ERROR, /*!< */
- SBRDEC_NOT_INITIALIZED, /*!< */
- SBRDEC_MEM_ALLOC_FAILED, /*!< Memory allocation failed. Probably not enough memory available. */
- SBRDEC_PARSE_ERROR, /*!< */
- SBRDEC_UNSUPPORTED_CONFIG, /*!< */
- SBRDEC_SET_PARAM_FAIL /*!< */
-} SBR_ERROR;
-
-typedef enum
-{
- SBR_SYSTEM_BITSTREAM_DELAY, /*!< System: Switch to enable an additional SBR bitstream delay of one frame. */
- SBR_QMF_MODE, /*!< Set QMF mode, either complex or low power. */
- SBR_LD_QMF_TIME_ALIGN, /*!< Set QMF type, either LD-MPS or CLDFB. Relevant for ELD streams only. */
- SBR_BS_INTERRUPTION /*!< Signal bit stream interruption. Value is ignored. */
-} SBRDEC_PARAM;
-
-typedef struct SBR_DECODER_INSTANCE *HANDLE_SBRDECODER;
-
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-
-/**
- * \brief Allocates and initializes one SBR decoder instance.
- * \param pSelf Pointer to where a SBR decoder handle is copied into.
- * \return Error code.
- */
-SBR_ERROR sbrDecoder_Open ( HANDLE_SBRDECODER *pSelf );
-
-/**
- * \brief Initialize a SBR decoder runtime instance. Must be called before decoding starts.
- *
- * \param self Handle to a SBR decoder instance.
- * \param sampleRateIn Input samplerate of the SBR decoder instance.
- * \param sampleRateOut Output samplerate of the SBR decoder instance.
- * \param samplesPerFrame Number of samples per frames.
- * \param coreCodec Audio Object Type (AOT) of the core codec.
- * \param elementID Table with MPEG-4 element Ids in canonical order.
- * \param forceReset Flag that enforces a complete decoder reset.
- *
- * \return Error code.
- */
-SBR_ERROR sbrDecoder_InitElement (
- HANDLE_SBRDECODER self,
- const int sampleRateIn,
- const int sampleRateOut,
- const int samplesPerFrame,
- const AUDIO_OBJECT_TYPE coreCodec,
- const MP4_ELEMENT_ID elementID,
- const int elementIndex
- );
-
-/**
- * \brief pass out of band SBR header to SBR decoder
- *
- * \param self Handle to a SBR decoder instance.
- * \param hBs bit stream handle data source.
- * \param elementID SBR element ID.
- * \param elementIndex SBR element index.
- *
- * \return Error code.
- */
-INT sbrDecoder_Header (
- HANDLE_SBRDECODER self,
- HANDLE_FDK_BITSTREAM hBs,
- const INT sampleRateIn,
- const INT sampleRateOut,
- const INT samplesPerFrame,
- const AUDIO_OBJECT_TYPE coreCodec,
- const MP4_ELEMENT_ID elementID,
- const INT elementIndex
- );
-
-/**
- * \brief Set a parameter of the SBR decoder runtime instance.
- * \param self SBR decoder handle.
- * \param param Parameter which will be set if successfull.
- * \param value New parameter value.
- * \return Error code.
- */
-SBR_ERROR sbrDecoder_SetParam ( HANDLE_SBRDECODER self,
- const SBRDEC_PARAM param,
- const INT value );
-
-/**
- * \brief Feed DRC channel data into a SBR decoder runtime instance.
- *
- * \param self SBR decoder handle.
- * \param ch Channel number to which the DRC data is associated to.
- * \param numBands Number of DRC bands.
- * \param pNextFact_mag Pointer to a table with the DRC factor magnitudes.
- * \param nextFact_exp Exponent for all DRC factors.
- * \param drcInterpolationScheme DRC interpolation scheme.
- * \param winSequence Window sequence from core coder (eight short or one long window).
- * \param pBandTop Pointer to a table with the top borders for all DRC bands.
- *
- * \return Error code.
- */
-SBR_ERROR sbrDecoder_drcFeedChannel ( HANDLE_SBRDECODER self,
- INT ch,
- UINT numBands,
- FIXP_DBL *pNextFact_mag,
- INT nextFact_exp,
- SHORT drcInterpolationScheme,
- UCHAR winSequence,
- USHORT *pBandTop );
-
-/**
- * \brief Disable SBR DRC for a certain channel.
- *
- * \param hSbrDecoder SBR decoder handle.
- * \param ch Number of the channel that has to be disabled.
- *
- * \return None.
- */
-void sbrDecoder_drcDisable ( HANDLE_SBRDECODER self,
- INT ch );
-
-
-/**
- * \brief Parse one SBR element data extension data block. The bit stream position will
- * be placed at the end of the SBR payload block. The remaining bits will be returned
- * into *count if a payload length is given (byPayLen > 0). If no SBR payload length is
- * given (bsPayLen < 0) then the bit stream position on return will be random after this
- * function call in case of errors, and any further decoding will be completely pointless.
- *
- * \param self SBR decoder handle.
- * \param hBs Bit stream handle as data source.
- * \param count Pointer to an integer where the amount of parsed SBR payload bits is stored into.
- * \param bsPayLen If > 0 this value is the SBR payload length. If < 0, the SBR payload length is unknown.
- * \param flags CRC flag (0: EXT_SBR_DATA; 1: EXT_SBR_DATA_CRC)
- * \param prev_element Previous MPEG-4 element ID.
- * \param element_index Index of the current element.
- *
- * \return Error code.
- */
-SBR_ERROR sbrDecoder_Parse (
- HANDLE_SBRDECODER self,
- HANDLE_FDK_BITSTREAM hBs,
- int *count,
- int bsPayLen,
- int crcFlag,
- MP4_ELEMENT_ID prev_element,
- int element_index,
- int fGlobalIndependencyFlag
- );
-
-/**
- * \brief This function decodes the given SBR bitstreams and applies SBR to the given time data.
- *
- * SBR-processing works InPlace. I.e. the calling function has to provide
- * a time domain buffer timeData which can hold the completely decoded
- * result.
- *
- * Left and right channel are read and stored according to the
- * interleaving flag, frame length and number of channels.
- *
- * \param self Handle of an open SBR decoder instance.
- * \param hSbrBs SBR Bitstream handle.
- * \param timeData Pointer to input and finally upsampled output data.
- * \param numChannels Pointer to a buffer holding the number of channels in time data buffer.
- * \param sampleRate Output samplerate.
- * \param channelMapping Channel mapping indices.
- * \param interleaved Flag indicating if time data is stored interleaved (1: Interleaved time data, 0: non-interleaved timedata).
- * \param coreDecodedOk Flag indicating if the core decoder did not find any error (0: core decoder found errors, 1: no errors).
- * \param psDecoded Pointer to a buffer holding a flag. Input: PS is possible, Output: PS has been rendered.
- *
- * \return Error code.
- */
-SBR_ERROR sbrDecoder_Apply ( HANDLE_SBRDECODER self,
- INT_PCM *timeData,
- int *numChannels,
- int *sampleRate,
- const UCHAR channelMapping[(6)],
- const int interleaved,
- const int coreDecodedOk,
- UCHAR *psDecoded );
-
-
-/**
- * \brief Close SBR decoder instance and free memory.
- * \param self SBR decoder handle.
- * \return Error Code.
- */
-SBR_ERROR sbrDecoder_Close ( HANDLE_SBRDECODER *self );
-
-
-/**
- * \brief Get SBR decoder library information.
- * \param info Pointer to a LIB_INFO struct, where library information is written to.
- * \return 0 on success, -1 if invalid handle or if no free element is available to write information to.
- */
-INT sbrDecoder_GetLibInfo( LIB_INFO *info );
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/libSBRdec/src/arm/env_calc_arm.cpp b/libSBRdec/src/arm/env_calc_arm.cpp
deleted file mode 100644
index 12b17d8..0000000
--- a/libSBRdec/src/arm/env_calc_arm.cpp
+++ /dev/null
@@ -1,148 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/******************************** Fraunhofer IIS ***************************
-
- Author(s): Arthur Tritthart
- Description: (ARM optimised) SBR domain coding
-
-******************************************************************************/
-#ifndef INCLUSION_GUARD_CALC_ENV_ARM
-#define INCLUSION_GUARD_CALC_ENV_ARM
-
-
-/*!
- \brief Compute maximal value of a complex array (re/im) of a given width
- Negative values are temporarily logically or'ed with 0xFFFFFFFF
- instead of negating the value, if the sign bit is set.
- \param maxVal Preset maximal value
- \param reTmp real input signal
- \param imTmp imaginary input signal
- \return new maximal value
-*/
-
-#ifdef FUNCTION_FDK_get_maxval
-__asm FIXP_DBL FDK_get_maxval (FIXP_DBL maxVal, FIXP_DBL *reTmp, FIXP_DBL *imTmp, int width )
-{
-
- /* Register map:
- r0 maxVal
- r1 reTmp
- r2 imTmp
- r3 width
- r4 real
- r5 imag
- */
- PUSH {r4-r5}
-
- MOVS r3, r3, ASR #1
- ADC r3, r3, #0
- BCS FDK_get_maxval_loop_2nd_part
- BEQ FDK_get_maxval_loop_end
-
-FDK_get_maxval_loop
- LDR r4, [r1], #4
- LDR r5, [r2], #4
- EOR r4, r4, r4, ASR #31
- EOR r5, r5, r5, ASR #31
- ORR r0, r0, r4
- ORR r0, r0, r5
-
-FDK_get_maxval_loop_2nd_part
- LDR r4, [r1], #4
- LDR r5, [r2], #4
- EOR r4, r4, r4, ASR #31
- EOR r5, r5, r5, ASR #31
- ORR r0, r0, r4
- ORR r0, r0, r5
-
- SUBS r3, r3, #1
- BNE FDK_get_maxval_loop
-
-FDK_get_maxval_loop_end
- POP {r4-r5}
- BX lr
-}
-#endif /* FUNCTION_FDK_get_maxval */
-
-#endif /* INCLUSION_GUARD_CALC_ENV_ARM */
diff --git a/libSBRdec/src/arm/lpp_tran_arm.cpp b/libSBRdec/src/arm/lpp_tran_arm.cpp
deleted file mode 100644
index 78bbc2c..0000000
--- a/libSBRdec/src/arm/lpp_tran_arm.cpp
+++ /dev/null
@@ -1,151 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/******************************** Fraunhofer IIS ***************************
-
- Author(s): Arthur Tritthart
- Description: (ARM optimised) LPP transposer subroutines
-
-******************************************************************************/
-
-
-#if defined(__arm__)
-
-
-#define FUNCTION_LPPTRANSPOSER_func1
-
-#ifdef FUNCTION_LPPTRANSPOSER_func1
-
-/* Note: This code requires only 43 cycles per iteration instead of 61 on ARM926EJ-S */
-__attribute__ ((noinline)) static void lppTransposer_func1(
- FIXP_DBL *lowBandReal,
- FIXP_DBL *lowBandImag,
- FIXP_DBL **qmfBufferReal,
- FIXP_DBL **qmfBufferImag,
- int loops,
- int hiBand,
- int dynamicScale,
- int descale,
- FIXP_SGL a0r,
- FIXP_SGL a0i,
- FIXP_SGL a1r,
- FIXP_SGL a1i)
-{
-
- FIXP_DBL real1, real2, imag1, imag2, accu1, accu2;
-
- real2 = lowBandReal[-2];
- real1 = lowBandReal[-1];
- imag2 = lowBandImag[-2];
- imag1 = lowBandImag[-1];
- for(int i=0; i < loops; i++)
- {
- accu1 = fMultDiv2( a0r,real1);
- accu2 = fMultDiv2( a0i,imag1);
- accu1 = fMultAddDiv2(accu1,a1r,real2);
- accu2 = fMultAddDiv2(accu2,a1i,imag2);
- real2 = fMultDiv2( a1i,real2);
- accu1 = accu1 - accu2;
- accu1 = accu1 >> dynamicScale;
-
- accu2 = fMultAddDiv2(real2,a1r,imag2);
- real2 = real1;
- imag2 = imag1;
- accu2 = fMultAddDiv2(accu2,a0i,real1);
- real1 = lowBandReal[i];
- accu2 = fMultAddDiv2(accu2,a0r,imag1);
- imag1 = lowBandImag[i];
- accu2 = accu2 >> dynamicScale;
-
- accu1 <<= 1;
- accu2 <<= 1;
-
- qmfBufferReal[i][hiBand] = accu1 + (real1>>descale);
- qmfBufferImag[i][hiBand] = accu2 + (imag1>>descale);
- }
-}
-#endif /* #ifdef FUNCTION_LPPTRANSPOSER_func1 */
-#endif /* __arm__ */
-
-
-
diff --git a/libSBRdec/src/env_calc.cpp b/libSBRdec/src/env_calc.cpp
deleted file mode 100644
index ade57fc..0000000
--- a/libSBRdec/src/env_calc.cpp
+++ /dev/null
@@ -1,2229 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Envelope calculation
-
- The envelope adjustor compares the energies present in the transposed
- highband to the reference energies conveyed with the bitstream.
- The highband is amplified (sometimes) or attenuated (mostly) to the
- desired level.
-
- The spectral shape of the reference energies can be changed several times per
- frame if necessary. Each set of energy values corresponding to a certain range
- in time will be called an <em>envelope</em> here.
- The bitstream supports several frequency scales and two resolutions. Normally,
- one or more QMF-subbands are grouped to one SBR-band. An envelope contains
- reference energies for each SBR-band.
- In addition to the energy envelopes, noise envelopes are transmitted that
- define the ratio of energy which is generated by adding noise instead of
- transposing the lowband. The noise envelopes are given in a coarser time
- and frequency resolution.
- If a signal contains strong tonal components, synthetic sines can be
- generated in individual SBR bands.
-
- An overlap buffer of 6 QMF-timeslots is used to allow a more
- flexible alignment of the envelopes in time that is not restricted to the
- core codec's frame borders.
- Therefore the envelope adjustor has access to the spectral data of the
- current frame as well as the last 6 QMF-timeslots of the previous frame.
- However, in average only the data of 1 frame is being processed as
- the adjustor is called once per frame.
-
- Depending on the frequency range set in the bitstream, only QMF-subbands between
- <em>lowSubband</em> and <em>highSubband</em> are adjusted.
-
- Scaling of spectral data to maximize SNR (see #QMF_SCALE_FACTOR) as well as a special Mantissa-Exponent format
- ( see calculateSbrEnvelope() ) are being used. The main entry point for this modules is calculateSbrEnvelope().
-
- \sa sbr_scale.h, #QMF_SCALE_FACTOR, calculateSbrEnvelope(), \ref documentationOverview
-*/
-
-
-#include "env_calc.h"
-
-#include "sbrdec_freq_sca.h"
-#include "env_extr.h"
-#include "transcendent.h"
-#include "sbr_ram.h"
-#include "sbr_rom.h"
-
-#include "genericStds.h" /* need FDKpow() for debug outputs */
-
-#if defined(__arm__)
-#include "arm/env_calc_arm.cpp"
-#endif
-
-typedef struct
-{
- FIXP_DBL nrgRef[MAX_FREQ_COEFFS];
- FIXP_DBL nrgEst[MAX_FREQ_COEFFS];
- FIXP_DBL nrgGain[MAX_FREQ_COEFFS];
- FIXP_DBL noiseLevel[MAX_FREQ_COEFFS];
- FIXP_DBL nrgSine[MAX_FREQ_COEFFS];
-
- SCHAR nrgRef_e[MAX_FREQ_COEFFS];
- SCHAR nrgEst_e[MAX_FREQ_COEFFS];
- SCHAR nrgGain_e[MAX_FREQ_COEFFS];
- SCHAR noiseLevel_e[MAX_FREQ_COEFFS];
- SCHAR nrgSine_e[MAX_FREQ_COEFFS];
-}
-ENV_CALC_NRGS;
-
-/*static*/ void equalizeFiltBufferExp(FIXP_DBL *filtBuffer,
- SCHAR *filtBuffer_e,
- FIXP_DBL *NrgGain,
- SCHAR *NrgGain_e,
- int subbands);
-
-/*static*/ void calcNrgPerSubband(FIXP_DBL **analysBufferReal,
- FIXP_DBL **analysBufferImag,
- int lowSubband, int highSubband,
- int start_pos, int next_pos,
- SCHAR frameExp,
- FIXP_DBL *nrgEst,
- SCHAR *nrgEst_e );
-
-/*static*/ void calcNrgPerSfb(FIXP_DBL **analysBufferReal,
- FIXP_DBL **analysBufferImag,
- int nSfb,
- UCHAR *freqBandTable,
- int start_pos, int next_pos,
- SCHAR input_e,
- FIXP_DBL *nrg_est,
- SCHAR *nrg_est_e );
-
-/*static*/ void calcSubbandGain(FIXP_DBL nrgRef, SCHAR nrgRef_e, ENV_CALC_NRGS* nrgs, int c,
- FIXP_DBL tmpNoise, SCHAR tmpNoise_e,
- UCHAR sinePresentFlag,
- UCHAR sineMapped,
- int noNoiseFlag);
-
-/*static*/ void calcAvgGain(ENV_CALC_NRGS* nrgs,
- int lowSubband,
- int highSubband,
- FIXP_DBL *sumRef_m,
- SCHAR *sumRef_e,
- FIXP_DBL *ptrAvgGain_m,
- SCHAR *ptrAvgGain_e);
-
-/*static*/ void adjustTimeSlotLC(FIXP_DBL *ptrReal,
- ENV_CALC_NRGS* nrgs,
- UCHAR *ptrHarmIndex,
- int lowSubbands,
- int noSubbands,
- int scale_change,
- int noNoiseFlag,
- int *ptrPhaseIndex,
- int fCldfb);
-/*static*/ void adjustTimeSlotHQ(FIXP_DBL *ptrReal,
- FIXP_DBL *ptrImag,
- HANDLE_SBR_CALCULATE_ENVELOPE h_sbr_cal_env,
- ENV_CALC_NRGS* nrgs,
- int lowSubbands,
- int noSubbands,
- int scale_change,
- FIXP_SGL smooth_ratio,
- int noNoiseFlag,
- int filtBufferNoiseShift);
-
-
-/*!
- \brief Map sine flags from bitstream to QMF bands
-
- The bitstream carries only 1 sine flag per band and frame.
- This function maps every sine flag from the bitstream to a specific QMF subband
- and to a specific envelope where the sine shall start.
- The result is stored in the vector sineMapped which contains one entry per
- QMF subband. The value of an entry specifies the envelope where a sine
- shall start. A value of #MAX_ENVELOPES indicates that no sine is present
- in the subband.
- The missing harmonics flags from the previous frame (harmFlagsPrev) determine
- if a sine starts at the beginning of the frame or at the transient position.
- Additionally, the flags in harmFlagsPrev are being updated by this function
- for the next frame.
-*/
-/*static*/ void mapSineFlags(UCHAR *freqBandTable, /*!< Band borders (there's only 1 flag per band) */
- int nSfb, /*!< Number of bands in the table */
- UCHAR *addHarmonics, /*!< vector with 1 flag per sfb */
- int *harmFlagsPrev, /*!< Packed 'addHarmonics' */
- int tranEnv, /*!< Transient position */
- SCHAR *sineMapped) /*!< Resulting vector of sine start positions for each QMF band */
-
-{
- int i;
- int lowSubband2 = freqBandTable[0]<<1;
- int bitcount = 0;
- int oldflags = *harmFlagsPrev;
- int newflags = 0;
-
- /*
- Format of harmFlagsPrev:
-
- first word = flags for highest 16 sfb bands in use
- second word = flags for next lower 16 sfb bands (if present)
- third word = flags for lowest 16 sfb bands (if present)
-
- Up to MAX_FREQ_COEFFS sfb bands can be flagged for a sign.
- The lowest bit of the first word corresponds to the _highest_ sfb band in use.
- This is ensures that each flag is mapped to the same QMF band even after a
- change of the crossover-frequency.
- */
-
-
- /* Reset the output vector first */
- FDKmemset(sineMapped, MAX_ENVELOPES,MAX_FREQ_COEFFS); /* MAX_ENVELOPES means 'no sine' */
-
- freqBandTable += nSfb;
- addHarmonics += nSfb-1;
-
- for (i=nSfb; i!=0; i--) {
- int ui = *freqBandTable--; /* Upper limit of the current scale factor band. */
- int li = *freqBandTable; /* Lower limit of the current scale factor band. */
-
- if ( *addHarmonics-- ) { /* There is a sine in this band */
-
- unsigned int mask = 1 << bitcount;
- newflags |= mask; /* Set flag */
-
- /*
- If there was a sine in the last frame, let it continue from the first envelope on
- else start at the transient position.
- */
- sineMapped[(ui+li-lowSubband2) >> 1] = ( oldflags & mask ) ? 0 : tranEnv;
- }
-
- if ((++bitcount == 16) || i==1) {
- bitcount = 0;
- *harmFlagsPrev++ = newflags;
- oldflags = *harmFlagsPrev; /* Fetch 16 of the old flags */
- newflags = 0;
- }
- }
-}
-
-
-/*!
- \brief Reduce gain-adjustment induced aliasing for real valued filterbank.
-*/
-/*static*/ void
-aliasingReduction(FIXP_DBL* degreeAlias, /*!< estimated aliasing for each QMF channel */
- ENV_CALC_NRGS* nrgs,
- int* useAliasReduction, /*!< synthetic sine engergy for each subband, used as flag */
- int noSubbands) /*!< number of QMF channels to process */
-{
- FIXP_DBL* nrgGain = nrgs->nrgGain; /*!< subband gains to be modified */
- SCHAR* nrgGain_e = nrgs->nrgGain_e; /*!< subband gains to be modified (exponents) */
- FIXP_DBL* nrgEst = nrgs->nrgEst; /*!< subband energy before amplification */
- SCHAR* nrgEst_e = nrgs->nrgEst_e; /*!< subband energy before amplification (exponents) */
- int grouping = 0, index = 0, noGroups, k;
- int groupVector[MAX_FREQ_COEFFS];
-
- /* Calculate grouping*/
- for (k = 0; k < noSubbands-1; k++ ){
- if ( (degreeAlias[k + 1] != FL2FXCONST_DBL(0.0f)) && useAliasReduction[k] ) {
- if(grouping==0){
- groupVector[index++] = k;
- grouping = 1;
- }
- else{
- if(groupVector[index-1] + 3 == k){
- groupVector[index++] = k + 1;
- grouping = 0;
- }
- }
- }
- else{
- if(grouping){
- if(useAliasReduction[k])
- groupVector[index++] = k + 1;
- else
- groupVector[index++] = k;
- grouping = 0;
- }
- }
- }
-
- if(grouping){
- groupVector[index++] = noSubbands;
- }
- noGroups = index >> 1;
-
-
- /*Calculate new gain*/
- for (int group = 0; group < noGroups; group ++) {
- FIXP_DBL nrgOrig = FL2FXCONST_DBL(0.0f); /* Original signal energy in current group of bands */
- SCHAR nrgOrig_e = 0;
- FIXP_DBL nrgAmp = FL2FXCONST_DBL(0.0f); /* Amplified signal energy in group (using current gains) */
- SCHAR nrgAmp_e = 0;
- FIXP_DBL nrgMod = FL2FXCONST_DBL(0.0f); /* Signal energy in group when applying modified gains */
- SCHAR nrgMod_e = 0;
- FIXP_DBL groupGain; /* Total energy gain in group */
- SCHAR groupGain_e;
- FIXP_DBL compensation; /* Compensation factor for the energy change when applying modified gains */
- SCHAR compensation_e;
-
- int startGroup = groupVector[2*group];
- int stopGroup = groupVector[2*group+1];
-
- /* Calculate total energy in group before and after amplification with current gains: */
- for(k = startGroup; k < stopGroup; k++){
- /* Get original band energy */
- FIXP_DBL tmp = nrgEst[k];
- SCHAR tmp_e = nrgEst_e[k];
-
- FDK_add_MantExp(tmp, tmp_e, nrgOrig, nrgOrig_e, &nrgOrig, &nrgOrig_e);
-
- /* Multiply band energy with current gain */
- tmp = fMult(tmp,nrgGain[k]);
- tmp_e = tmp_e + nrgGain_e[k];
-
- FDK_add_MantExp(tmp, tmp_e, nrgAmp, nrgAmp_e, &nrgAmp, &nrgAmp_e);
- }
-
- /* Calculate total energy gain in group */
- FDK_divide_MantExp(nrgAmp, nrgAmp_e,
- nrgOrig, nrgOrig_e,
- &groupGain, &groupGain_e);
-
- for(k = startGroup; k < stopGroup; k++){
- FIXP_DBL tmp;
- SCHAR tmp_e;
-
- FIXP_DBL alpha = degreeAlias[k];
- if (k < noSubbands - 1) {
- if (degreeAlias[k + 1] > alpha)
- alpha = degreeAlias[k + 1];
- }
-
- /* Modify gain depending on the degree of aliasing */
- FDK_add_MantExp( fMult(alpha,groupGain), groupGain_e,
- fMult(/*FL2FXCONST_DBL(1.0f)*/ (FIXP_DBL)MAXVAL_DBL - alpha,nrgGain[k]), nrgGain_e[k],
- &nrgGain[k], &nrgGain_e[k] );
-
- /* Apply modified gain to original energy */
- tmp = fMult(nrgGain[k],nrgEst[k]);
- tmp_e = nrgGain_e[k] + nrgEst_e[k];
-
- /* Accumulate energy with modified gains applied */
- FDK_add_MantExp( tmp, tmp_e,
- nrgMod, nrgMod_e,
- &nrgMod, &nrgMod_e );
- }
-
- /* Calculate compensation factor to retain the energy of the amplified signal */
- FDK_divide_MantExp(nrgAmp, nrgAmp_e,
- nrgMod, nrgMod_e,
- &compensation, &compensation_e);
-
- /* Apply compensation factor to all gains of the group */
- for(k = startGroup; k < stopGroup; k++){
- nrgGain[k] = fMult(nrgGain[k],compensation);
- nrgGain_e[k] = nrgGain_e[k] + compensation_e;
- }
- }
-}
-
-
- /* Convert headroom bits to exponent */
-#define SCALE2EXP(s) (15-(s))
-#define EXP2SCALE(e) (15-(e))
-
-/*!
- \brief Apply spectral envelope to subband samples
-
- This function is called from sbr_dec.cpp in each frame.
-
- To enhance accuracy and due to the usage of tables for squareroots and
- inverse, some calculations are performed with the operands being split
- into mantissa and exponent. The variable names in the source code carry
- the suffixes <em>_m</em> and <em>_e</em> respectively. The control data
- in #hFrameData containts envelope data which is represented by this format but
- stored in single words. (See requantizeEnvelopeData() for details). This data
- is unpacked within calculateSbrEnvelope() to follow the described suffix convention.
-
- The actual value (comparable to the corresponding float-variable in the
- research-implementation) of a mantissa/exponent-pair can be calculated as
-
- \f$ value = value\_m * 2^{value\_e} \f$
-
- All energies and noise levels decoded from the bitstream suit for an
- original signal magnitude of \f$\pm 32768 \f$ rather than \f$ \pm 1\f$. Therefore,
- the scale factor <em>hb_scale</em> passed into this function will be converted
- to an 'input exponent' (#input_e), which fits the internal representation.
-
- Before the actual processing, an exponent #adj_e for resulting adjusted
- samples is derived from the maximum reference energy.
-
- Then, for each envelope, the following steps are performed:
-
- \li Calculate energy in the signal to be adjusted. Depending on the the value of
- #interpolFreq (interpolation mode), this is either done seperately
- for each QMF-subband or for each SBR-band.
- The resulting energies are stored in #nrgEst_m[#MAX_FREQ_COEFFS] (mantissas)
- and #nrgEst_e[#MAX_FREQ_COEFFS] (exponents).
- \li Calculate gain and noise level for each subband:<br>
- \f$ gain = \sqrt{ \frac{nrgRef}{nrgEst} \cdot (1 - noiseRatio) }
- \hspace{2cm}
- noise = \sqrt{ nrgRef \cdot noiseRatio }
- \f$<br>
- where <em>noiseRatio</em> and <em>nrgRef</em> are extracted from the
- bitstream and <em>nrgEst</em> is the subband energy before adjustment.
- The resulting gains are stored in #nrgGain_m[#MAX_FREQ_COEFFS]
- (mantissas) and #nrgGain_e[#MAX_FREQ_COEFFS] (exponents), the noise levels
- are stored in #noiseLevel_m[#MAX_FREQ_COEFFS] and #noiseLevel_e[#MAX_FREQ_COEFFS]
- (exponents).
- The sine levels are stored in #nrgSine_m[#MAX_FREQ_COEFFS]
- and #nrgSine_e[#MAX_FREQ_COEFFS].
- \li Noise limiting: The gain for each subband is limited both absolutely
- and relatively compared to the total gain over all subbands.
- \li Boost gain: Calculate and apply boost factor for each limiter band
- in order to compensate for the energy loss imposed by the limiting.
- \li Apply gains and add noise: The gains and noise levels are applied
- to all timeslots of the current envelope. A short FIR-filter (length 4
- QMF-timeslots) can be used to smooth the sudden change at the envelope borders.
- Each complex subband sample of the current timeslot is multiplied by the
- smoothed gain, then random noise with the calculated level is added.
-
- \note
- To reduce the stack size, some of the local arrays could be located within
- the time output buffer. Of the 512 samples temporarily available there,
- about half the size is already used by #SBR_FRAME_DATA. A pointer to the
- remaining free memory could be supplied by an additional argument to calculateSbrEnvelope()
- in sbr_dec:
-
- \par
- \code
- calculateSbrEnvelope (&hSbrDec->sbrScaleFactor,
- &hSbrDec->SbrCalculateEnvelope,
- hHeaderData,
- hFrameData,
- QmfBufferReal,
- QmfBufferImag,
- timeOutPtr + sizeof(SBR_FRAME_DATA)/sizeof(Float) + 1);
- \endcode
-
- \par
- Within calculateSbrEnvelope(), some pointers could be defined instead of the arrays
- #nrgRef_m, #nrgRef_e, #nrgEst_m, #nrgEst_e, #noiseLevel_m:
-
- \par
- \code
- fract* nrgRef_m = timeOutPtr;
- SCHAR* nrgRef_e = nrgRef_m + MAX_FREQ_COEFFS;
- fract* nrgEst_m = nrgRef_e + MAX_FREQ_COEFFS;
- SCHAR* nrgEst_e = nrgEst_m + MAX_FREQ_COEFFS;
- fract* noiseLevel_m = nrgEst_e + MAX_FREQ_COEFFS;
- \endcode
-
- <br>
-*/
-void
-calculateSbrEnvelope (QMF_SCALE_FACTOR *sbrScaleFactor, /*!< Scaling factors */
- HANDLE_SBR_CALCULATE_ENVELOPE h_sbr_cal_env, /*!< Handle to struct filled by the create-function */
- HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA hFrameData, /*!< Control data of current frame */
- FIXP_DBL **analysBufferReal, /*!< Real part of subband samples to be processed */
- FIXP_DBL **analysBufferImag, /*!< Imag part of subband samples to be processed */
- const int useLP,
- FIXP_DBL *degreeAlias, /*!< Estimated aliasing for each QMF channel */
- const UINT flags,
- const int frameErrorFlag
- )
-{
- int c, i, j, envNoise = 0;
- UCHAR* borders = hFrameData->frameInfo.borders;
-
- FIXP_SGL *noiseLevels = hFrameData->sbrNoiseFloorLevel;
- HANDLE_FREQ_BAND_DATA hFreq = &hHeaderData->freqBandData;
-
- int lowSubband = hFreq->lowSubband;
- int highSubband = hFreq->highSubband;
- int noSubbands = highSubband - lowSubband;
-
- int noNoiseBands = hFreq->nNfb;
- int no_cols = hHeaderData->numberTimeSlots * hHeaderData->timeStep;
- UCHAR first_start = borders[0] * hHeaderData->timeStep;
-
- SCHAR sineMapped[MAX_FREQ_COEFFS];
- SCHAR ov_adj_e = SCALE2EXP(sbrScaleFactor->ov_hb_scale);
- SCHAR adj_e = 0;
- SCHAR output_e;
- SCHAR final_e = 0;
-
- SCHAR maxGainLimit_e = (frameErrorFlag) ? MAX_GAIN_CONCEAL_EXP : MAX_GAIN_EXP;
-
- int useAliasReduction[64];
- UCHAR smooth_length = 0;
-
- FIXP_SGL * pIenv = hFrameData->iEnvelope;
-
- /*
- Extract sine flags for all QMF bands
- */
- mapSineFlags(hFreq->freqBandTable[1],
- hFreq->nSfb[1],
- hFrameData->addHarmonics,
- h_sbr_cal_env->harmFlagsPrev,
- hFrameData->frameInfo.tranEnv,
- sineMapped);
-
-
- /*
- Scan for maximum in bufferd noise levels.
- This is needed in case that we had strong noise in the previous frame
- which is smoothed into the current frame.
- The resulting exponent is used as start value for the maximum search
- in reference energies
- */
- if (!useLP)
- adj_e = h_sbr_cal_env->filtBufferNoise_e - getScalefactor(h_sbr_cal_env->filtBufferNoise, noSubbands);
-
- /*
- Scan for maximum reference energy to be able
- to select appropriate values for adj_e and final_e.
- */
-
- for (i = 0; i < hFrameData->frameInfo.nEnvelopes; i++) {
- INT maxSfbNrg_e = -FRACT_BITS+NRG_EXP_OFFSET; /* start value for maximum search */
-
- /* Fetch frequency resolution for current envelope: */
- for (j=hFreq->nSfb[hFrameData->frameInfo.freqRes[i]]; j!=0; j--) {
- maxSfbNrg_e = fixMax(maxSfbNrg_e,(INT)((LONG)(*pIenv++) & MASK_E));
- }
- maxSfbNrg_e -= NRG_EXP_OFFSET;
-
- /* Energy -> magnitude (sqrt halfens exponent) */
- maxSfbNrg_e = (maxSfbNrg_e+1) >> 1; /* +1 to go safe (round to next higher int) */
-
- /* Some safety margin is needed for 2 reasons:
- - The signal energy is not equally spread over all subband samples in
- a specific sfb of an envelope (Nrg could be too high by a factor of
- envWidth * sfbWidth)
- - Smoothing can smear high gains of the previous envelope into the current
- */
- maxSfbNrg_e += 6;
-
- if (borders[i] < hHeaderData->numberTimeSlots)
- /* This envelope affects timeslots that belong to the output frame */
- adj_e = (maxSfbNrg_e > adj_e) ? maxSfbNrg_e : adj_e;
-
- if (borders[i+1] > hHeaderData->numberTimeSlots)
- /* This envelope affects timeslots after the output frame */
- final_e = (maxSfbNrg_e > final_e) ? maxSfbNrg_e : final_e;
-
- }
-
- /*
- Calculate adjustment factors and apply them for every envelope.
- */
- pIenv = hFrameData->iEnvelope;
-
- for (i = 0; i < hFrameData->frameInfo.nEnvelopes; i++) {
-
- int k, noNoiseFlag;
- SCHAR noise_e, input_e = SCALE2EXP(sbrScaleFactor->hb_scale);
- C_ALLOC_SCRATCH_START(pNrgs, ENV_CALC_NRGS, 1);
-
- /*
- Helper variables.
- */
- UCHAR start_pos = hHeaderData->timeStep * borders[i]; /* Start-position in time (subband sample) for current envelope. */
- UCHAR stop_pos = hHeaderData->timeStep * borders[i+1]; /* Stop-position in time (subband sample) for current envelope. */
- UCHAR freq_res = hFrameData->frameInfo.freqRes[i]; /* Frequency resolution for current envelope. */
-
-
- /* Always do fully initialize the temporary energy table. This prevents negative energies and extreme gain factors in
- cases where the number of limiter bands exceeds the number of subbands. The latter can be caused by undetected bit
- errors and is tested by some streams from the certification set. */
- FDKmemclear(pNrgs, sizeof(ENV_CALC_NRGS));
-
- /* If the start-pos of the current envelope equals the stop pos of the current
- noise envelope, increase the pointer (i.e. choose the next noise-floor).*/
- if (borders[i] == hFrameData->frameInfo.bordersNoise[envNoise+1]){
- noiseLevels += noNoiseBands; /* The noise floor data is stored in a row [noiseFloor1 noiseFloor2...].*/
- envNoise++;
- }
-
- if(i==hFrameData->frameInfo.tranEnv || i==h_sbr_cal_env->prevTranEnv) /* attack */
- {
- noNoiseFlag = 1;
- if (!useLP)
- smooth_length = 0; /* No smoothing on attacks! */
- }
- else {
- noNoiseFlag = 0;
- if (!useLP)
- smooth_length = (1 - hHeaderData->bs_data.smoothingLength) << 2; /* can become either 0 or 4 */
- }
-
-
- /*
- Energy estimation in transposed highband.
- */
- if (hHeaderData->bs_data.interpolFreq)
- calcNrgPerSubband(analysBufferReal,
- (useLP) ? NULL : analysBufferImag,
- lowSubband, highSubband,
- start_pos, stop_pos,
- input_e,
- pNrgs->nrgEst,
- pNrgs->nrgEst_e);
- else
- calcNrgPerSfb(analysBufferReal,
- (useLP) ? NULL : analysBufferImag,
- hFreq->nSfb[freq_res],
- hFreq->freqBandTable[freq_res],
- start_pos, stop_pos,
- input_e,
- pNrgs->nrgEst,
- pNrgs->nrgEst_e);
-
- /*
- Calculate subband gains
- */
- {
- UCHAR * table = hFreq->freqBandTable[freq_res];
- UCHAR * pUiNoise = &hFreq->freqBandTableNoise[1]; /*! Upper limit of the current noise floor band. */
-
- FIXP_SGL * pNoiseLevels = noiseLevels;
-
- FIXP_DBL tmpNoise = FX_SGL2FX_DBL((FIXP_SGL)((LONG)(*pNoiseLevels) & MASK_M));
- SCHAR tmpNoise_e = (UCHAR)((LONG)(*pNoiseLevels++) & MASK_E) - NOISE_EXP_OFFSET;
-
- int cc = 0;
- c = 0;
- for (j = 0; j < hFreq->nSfb[freq_res]; j++) {
-
- FIXP_DBL refNrg = FX_SGL2FX_DBL((FIXP_SGL)((LONG)(*pIenv) & MASK_M));
- SCHAR refNrg_e = (SCHAR)((LONG)(*pIenv) & MASK_E) - NRG_EXP_OFFSET;
-
- UCHAR sinePresentFlag = 0;
- int li = table[j];
- int ui = table[j+1];
-
- for (k=li; k<ui; k++) {
- sinePresentFlag |= (i >= sineMapped[cc]);
- cc++;
- }
-
- for (k=li; k<ui; k++) {
- if (k >= *pUiNoise) {
- tmpNoise = FX_SGL2FX_DBL((FIXP_SGL)((LONG)(*pNoiseLevels) & MASK_M));
- tmpNoise_e = (SCHAR)((LONG)(*pNoiseLevels++) & MASK_E) - NOISE_EXP_OFFSET;
-
- pUiNoise++;
- }
-
- FDK_ASSERT(k >= lowSubband);
-
- if (useLP)
- useAliasReduction[k-lowSubband] = !sinePresentFlag;
-
- pNrgs->nrgSine[c] = FL2FXCONST_DBL(0.0f);
- pNrgs->nrgSine_e[c] = 0;
-
- calcSubbandGain(refNrg, refNrg_e, pNrgs, c,
- tmpNoise, tmpNoise_e,
- sinePresentFlag, i >= sineMapped[c],
- noNoiseFlag);
-
- pNrgs->nrgRef[c] = refNrg;
- pNrgs->nrgRef_e[c] = refNrg_e;
-
- c++;
- }
- pIenv++;
- }
- }
-
- /*
- Noise limiting
- */
-
- for (c = 0; c < hFreq->noLimiterBands; c++) {
-
- FIXP_DBL sumRef, boostGain, maxGain;
- FIXP_DBL accu = FL2FXCONST_DBL(0.0f);
- SCHAR sumRef_e, boostGain_e, maxGain_e, accu_e = 0;
-
- calcAvgGain(pNrgs,
- hFreq->limiterBandTable[c], hFreq->limiterBandTable[c+1],
- &sumRef, &sumRef_e,
- &maxGain, &maxGain_e);
-
- /* Multiply maxGain with limiterGain: */
- maxGain = fMult(maxGain, FDK_sbrDecoder_sbr_limGains_m[hHeaderData->bs_data.limiterGains]);
- maxGain_e += FDK_sbrDecoder_sbr_limGains_e[hHeaderData->bs_data.limiterGains];
-
- /* Scale mantissa of MaxGain into range between 0.5 and 1: */
- if (maxGain == FL2FXCONST_DBL(0.0f))
- maxGain_e = -FRACT_BITS;
- else {
- SCHAR charTemp = CountLeadingBits(maxGain);
- maxGain_e -= charTemp;
- maxGain <<= (int)charTemp;
- }
-
- if (maxGain_e >= maxGainLimit_e) { /* upper limit (e.g. 96 dB) */
- maxGain = FL2FXCONST_DBL(0.5f);
- maxGain_e = maxGainLimit_e;
- }
-
-
- /* Every subband gain is compared to the scaled "average gain"
- and limited if necessary: */
- for (k = hFreq->limiterBandTable[c]; k < hFreq->limiterBandTable[c+1]; k++) {
- if ( (pNrgs->nrgGain_e[k] > maxGain_e) || (pNrgs->nrgGain_e[k] == maxGain_e && pNrgs->nrgGain[k]>maxGain) ) {
-
- FIXP_DBL noiseAmp;
- SCHAR noiseAmp_e;
-
- FDK_divide_MantExp(maxGain, maxGain_e, pNrgs->nrgGain[k], pNrgs->nrgGain_e[k], &noiseAmp, &noiseAmp_e);
- pNrgs->noiseLevel[k] = fMult(pNrgs->noiseLevel[k],noiseAmp);
- pNrgs->noiseLevel_e[k] += noiseAmp_e;
- pNrgs->nrgGain[k] = maxGain;
- pNrgs->nrgGain_e[k] = maxGain_e;
- }
- }
-
- /* -- Boost gain
- Calculate and apply boost factor for each limiter band:
- 1. Check how much energy would be present when using the limited gain
- 2. Calculate boost factor by comparison with reference energy
- 3. Apply boost factor to compensate for the energy loss due to limiting
- */
- for (k = hFreq->limiterBandTable[c]; k < hFreq->limiterBandTable[c + 1]; k++) {
-
- /* 1.a Add energy of adjusted signal (using preliminary gain) */
- FIXP_DBL tmp = fMult(pNrgs->nrgGain[k],pNrgs->nrgEst[k]);
- SCHAR tmp_e = pNrgs->nrgGain_e[k] + pNrgs->nrgEst_e[k];
- FDK_add_MantExp(tmp, tmp_e, accu, accu_e, &accu, &accu_e);
-
- /* 1.b Add sine energy (if present) */
- if(pNrgs->nrgSine[k] != FL2FXCONST_DBL(0.0f)) {
- FDK_add_MantExp(pNrgs->nrgSine[k], pNrgs->nrgSine_e[k], accu, accu_e, &accu, &accu_e);
- }
- else {
- /* 1.c Add noise energy (if present) */
- if(noNoiseFlag == 0) {
- FDK_add_MantExp(pNrgs->noiseLevel[k], pNrgs->noiseLevel_e[k], accu, accu_e, &accu, &accu_e);
- }
- }
- }
-
- /* 2.a Calculate ratio of wanted energy and accumulated energy */
- if (accu == (FIXP_DBL)0) { /* If divisor is 0, limit quotient to +4 dB */
- boostGain = FL2FXCONST_DBL(0.6279716f);
- boostGain_e = 2;
- } else {
- INT div_e;
- boostGain = fDivNorm(sumRef, accu, &div_e);
- boostGain_e = sumRef_e - accu_e + div_e;
- }
-
-
- /* 2.b Result too high? --> Limit the boost factor to +4 dB */
- if((boostGain_e > 3) ||
- (boostGain_e == 2 && boostGain > FL2FXCONST_DBL(0.6279716f)) ||
- (boostGain_e == 3 && boostGain > FL2FXCONST_DBL(0.3139858f)) )
- {
- boostGain = FL2FXCONST_DBL(0.6279716f);
- boostGain_e = 2;
- }
- /* 3. Multiply all signal components with the boost factor */
- for (k = hFreq->limiterBandTable[c]; k < hFreq->limiterBandTable[c + 1]; k++) {
- pNrgs->nrgGain[k] = fMultDiv2(pNrgs->nrgGain[k],boostGain);
- pNrgs->nrgGain_e[k] = pNrgs->nrgGain_e[k] + boostGain_e + 1;
-
- pNrgs->nrgSine[k] = fMultDiv2(pNrgs->nrgSine[k],boostGain);
- pNrgs->nrgSine_e[k] = pNrgs->nrgSine_e[k] + boostGain_e + 1;
-
- pNrgs->noiseLevel[k] = fMultDiv2(pNrgs->noiseLevel[k],boostGain);
- pNrgs->noiseLevel_e[k] = pNrgs->noiseLevel_e[k] + boostGain_e + 1;
- }
- }
- /* End of noise limiting */
-
- if (useLP)
- aliasingReduction(degreeAlias+lowSubband,
- pNrgs,
- useAliasReduction,
- noSubbands);
-
- /* For the timeslots within the range for the output frame,
- use the same scale for the noise levels.
- Drawback: If the envelope exceeds the frame border, the noise levels
- will have to be rescaled later to fit final_e of
- the gain-values.
- */
- noise_e = (start_pos < no_cols) ? adj_e : final_e;
-
- /*
- Convert energies to amplitude levels
- */
- for (k=0; k<noSubbands; k++) {
- FDK_sqrt_MantExp(&pNrgs->nrgSine[k], &pNrgs->nrgSine_e[k], &noise_e);
- FDK_sqrt_MantExp(&pNrgs->nrgGain[k], &pNrgs->nrgGain_e[k], &pNrgs->nrgGain_e[k]);
- FDK_sqrt_MantExp(&pNrgs->noiseLevel[k], &pNrgs->noiseLevel_e[k], &noise_e);
- }
-
-
-
- /*
- Apply calculated gains and adaptive noise
- */
-
- /* assembleHfSignals() */
- {
- int scale_change, sc_change;
- FIXP_SGL smooth_ratio;
- int filtBufferNoiseShift=0;
-
- /* Initialize smoothing buffers with the first valid values */
- if (h_sbr_cal_env->startUp)
- {
- if (!useLP) {
- h_sbr_cal_env->filtBufferNoise_e = noise_e;
-
- FDKmemcpy(h_sbr_cal_env->filtBuffer_e, pNrgs->nrgGain_e, noSubbands*sizeof(SCHAR));
- FDKmemcpy(h_sbr_cal_env->filtBufferNoise, pNrgs->noiseLevel, noSubbands*sizeof(FIXP_DBL));
- FDKmemcpy(h_sbr_cal_env->filtBuffer, pNrgs->nrgGain, noSubbands*sizeof(FIXP_DBL));
-
- }
- h_sbr_cal_env->startUp = 0;
- }
-
- if (!useLP) {
-
- equalizeFiltBufferExp(h_sbr_cal_env->filtBuffer, /* buffered */
- h_sbr_cal_env->filtBuffer_e, /* buffered */
- pNrgs->nrgGain, /* current */
- pNrgs->nrgGain_e, /* current */
- noSubbands);
-
- /* Adapt exponent of buffered noise levels to the current exponent
- so they can easily be smoothed */
- if((h_sbr_cal_env->filtBufferNoise_e - noise_e)>=0) {
- int shift = fixMin(DFRACT_BITS-1,(int)(h_sbr_cal_env->filtBufferNoise_e - noise_e));
- for (k=0; k<noSubbands; k++)
- h_sbr_cal_env->filtBufferNoise[k] <<= shift;
- }
- else {
- int shift = fixMin(DFRACT_BITS-1,-(int)(h_sbr_cal_env->filtBufferNoise_e - noise_e));
- for (k=0; k<noSubbands; k++)
- h_sbr_cal_env->filtBufferNoise[k] >>= shift;
- }
-
- h_sbr_cal_env->filtBufferNoise_e = noise_e;
- }
-
- /* find best scaling! */
- scale_change = -(DFRACT_BITS-1);
- for(k=0;k<noSubbands;k++) {
- scale_change = fixMax(scale_change,(int)pNrgs->nrgGain_e[k]);
- }
- sc_change = (start_pos<no_cols)? adj_e - input_e : final_e - input_e;
-
- if ((scale_change-sc_change+1)<0)
- scale_change-=(scale_change-sc_change+1);
-
- scale_change = (scale_change-sc_change)+1;
-
- for(k=0;k<noSubbands;k++) {
- int sc = scale_change-pNrgs->nrgGain_e[k] + (sc_change-1);
- pNrgs->nrgGain[k] >>= sc;
- pNrgs->nrgGain_e[k] += sc;
- }
-
- if (!useLP) {
- for(k=0;k<noSubbands;k++) {
- int sc = scale_change-h_sbr_cal_env->filtBuffer_e[k] + (sc_change-1);
- h_sbr_cal_env->filtBuffer[k] >>= sc;
- }
- }
-
- for (j = start_pos; j < stop_pos; j++)
- {
- /* This timeslot is located within the first part of the processing buffer
- and will be fed into the QMF-synthesis for the current frame.
- adj_e - input_e
- This timeslot will not yet be fed into the QMF so we do not care
- about the adj_e.
- sc_change = final_e - input_e
- */
- if ( (j==no_cols) && (start_pos<no_cols) )
- {
- int shift = (int) (noise_e - final_e);
- if (!useLP)
- filtBufferNoiseShift = shift; /* shifting of h_sbr_cal_env->filtBufferNoise[k] will be applied in function adjustTimeSlotHQ() */
- if (shift>=0) {
- shift = fixMin(DFRACT_BITS-1,shift);
- for (k=0; k<noSubbands; k++) {
- pNrgs->nrgSine[k] <<= shift;
- pNrgs->noiseLevel[k] <<= shift;
- /*
- if (!useLP)
- h_sbr_cal_env->filtBufferNoise[k] <<= shift;
- */
- }
- }
- else {
- shift = fixMin(DFRACT_BITS-1,-shift);
- for (k=0; k<noSubbands; k++) {
- pNrgs->nrgSine[k] >>= shift;
- pNrgs->noiseLevel[k] >>= shift;
- /*
- if (!useLP)
- h_sbr_cal_env->filtBufferNoise[k] >>= shift;
- */
- }
- }
-
- /* update noise scaling */
- noise_e = final_e;
- if (!useLP)
- h_sbr_cal_env->filtBufferNoise_e = noise_e; /* scaling value unused! */
-
- /* update gain buffer*/
- sc_change -= (final_e - input_e);
-
- if (sc_change<0) {
- for(k=0;k<noSubbands;k++) {
- pNrgs->nrgGain[k] >>= -sc_change;
- pNrgs->nrgGain_e[k] += -sc_change;
- }
- if (!useLP) {
- for(k=0;k<noSubbands;k++) {
- h_sbr_cal_env->filtBuffer[k] >>= -sc_change;
- }
- }
- } else {
- scale_change+=sc_change;
- }
-
- } // if
-
- if (!useLP) {
-
- /* Prevent the smoothing filter from running on constant levels */
- if (j-start_pos < smooth_length)
- smooth_ratio = FDK_sbrDecoder_sbr_smoothFilter[j-start_pos];
-
- else
- smooth_ratio = FL2FXCONST_SGL(0.0f);
-
- adjustTimeSlotHQ(&analysBufferReal[j][lowSubband],
- &analysBufferImag[j][lowSubband],
- h_sbr_cal_env,
- pNrgs,
- lowSubband,
- noSubbands,
- scale_change,
- smooth_ratio,
- noNoiseFlag,
- filtBufferNoiseShift);
- }
- else
- {
- adjustTimeSlotLC(&analysBufferReal[j][lowSubband],
- pNrgs,
- &h_sbr_cal_env->harmIndex,
- lowSubband,
- noSubbands,
- scale_change,
- noNoiseFlag,
- &h_sbr_cal_env->phaseIndex,
- (flags & SBRDEC_ELD_GRID));
- }
- } // for
-
- if (!useLP) {
- /* Update time-smoothing-buffers for gains and noise levels
- The gains and the noise values of the current envelope are copied into the buffer.
- This has to be done at the end of each envelope as the values are required for
- a smooth transition to the next envelope. */
- FDKmemcpy(h_sbr_cal_env->filtBuffer, pNrgs->nrgGain, noSubbands*sizeof(FIXP_DBL));
- FDKmemcpy(h_sbr_cal_env->filtBuffer_e, pNrgs->nrgGain_e, noSubbands*sizeof(SCHAR));
- FDKmemcpy(h_sbr_cal_env->filtBufferNoise, pNrgs->noiseLevel, noSubbands*sizeof(FIXP_DBL));
- }
-
- }
- C_ALLOC_SCRATCH_END(pNrgs, ENV_CALC_NRGS, 1);
- }
-
- /* Rescale output samples */
- {
- FIXP_DBL maxVal;
- int ov_reserve, reserve;
-
- /* Determine headroom in old adjusted samples */
- maxVal = maxSubbandSample( analysBufferReal,
- (useLP) ? NULL : analysBufferImag,
- lowSubband,
- highSubband,
- 0,
- first_start);
-
- ov_reserve = fNorm(maxVal);
-
- /* Determine headroom in new adjusted samples */
- maxVal = maxSubbandSample( analysBufferReal,
- (useLP) ? NULL : analysBufferImag,
- lowSubband,
- highSubband,
- first_start,
- no_cols);
-
- reserve = fNorm(maxVal);
-
- /* Determine common output exponent */
- if (ov_adj_e - ov_reserve > adj_e - reserve ) /* set output_e to the maximum */
- output_e = ov_adj_e - ov_reserve;
- else
- output_e = adj_e - reserve;
-
- /* Rescale old samples */
- rescaleSubbandSamples( analysBufferReal,
- (useLP) ? NULL : analysBufferImag,
- lowSubband, highSubband,
- 0, first_start,
- ov_adj_e - output_e);
-
- /* Rescale new samples */
- rescaleSubbandSamples( analysBufferReal,
- (useLP) ? NULL : analysBufferImag,
- lowSubband, highSubband,
- first_start, no_cols,
- adj_e - output_e);
- }
-
- /* Update hb_scale */
- sbrScaleFactor->hb_scale = EXP2SCALE(output_e);
-
- /* Save the current final exponent for the next frame: */
- sbrScaleFactor->ov_hb_scale = EXP2SCALE(final_e);
-
-
- /* We need to remeber to the next frame that the transient
- will occur in the first envelope (if tranEnv == nEnvelopes). */
- if(hFrameData->frameInfo.tranEnv == hFrameData->frameInfo.nEnvelopes)
- h_sbr_cal_env->prevTranEnv = 0;
- else
- h_sbr_cal_env->prevTranEnv = -1;
-
-}
-
-
-/*!
- \brief Create envelope instance
-
- Must be called once for each channel before calculateSbrEnvelope() can be used.
-
- \return errorCode, 0 if successful
-*/
-SBR_ERROR
-createSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hs, /*!< pointer to envelope instance */
- HANDLE_SBR_HEADER_DATA hHeaderData, /*!< static SBR control data, initialized with defaults */
- const int chan, /*!< Channel for which to assign buffers */
- const UINT flags)
-{
- SBR_ERROR err = SBRDEC_OK;
- int i;
-
- /* Clear previous missing harmonics flags */
- for (i=0; i<(MAX_FREQ_COEFFS+15)>>4; i++) {
- hs->harmFlagsPrev[i] = 0;
- }
- hs->harmIndex = 0;
-
- /*
- Setup pointers for time smoothing.
- The buffer itself will be initialized later triggered by the startUp-flag.
- */
- hs->prevTranEnv = -1;
-
-
- /* initialization */
- resetSbrEnvelopeCalc(hs);
-
- if (chan==0) { /* do this only once */
- err = resetFreqBandTables(hHeaderData, flags);
- }
-
- return err;
-}
-
-/*!
- \brief Create envelope instance
-
- Must be called once for each channel before calculateSbrEnvelope() can be used.
-
- \return errorCode, 0 if successful
-*/
-int
-deleteSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hs)
-{
- return 0;
-}
-
-
-/*!
- \brief Reset envelope instance
-
- This function must be called for each channel on a change of configuration.
- Note that resetFreqBandTables should also be called in this case.
-
- \return errorCode, 0 if successful
-*/
-void
-resetSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hCalEnv) /*!< pointer to envelope instance */
-{
- hCalEnv->phaseIndex = 0;
-
- /* Noise exponent needs to be reset because the output exponent for the next frame depends on it */
- hCalEnv->filtBufferNoise_e = 0;
-
- hCalEnv->startUp = 1;
-}
-
-
-/*!
- \brief Equalize exponents of the buffered gain values and the new ones
-
- After equalization of exponents, the FIR-filter addition for smoothing
- can be performed.
- This function is called once for each envelope before adjusting.
-*/
-/*static*/ void equalizeFiltBufferExp(FIXP_DBL *filtBuffer, /*!< bufferd gains */
- SCHAR *filtBuffer_e, /*!< exponents of bufferd gains */
- FIXP_DBL *nrgGain, /*!< gains for current envelope */
- SCHAR *nrgGain_e, /*!< exponents of gains for current envelope */
- int subbands) /*!< Number of QMF subbands */
-{
- int band;
- int diff;
-
- for (band=0; band<subbands; band++){
- diff = (int) (nrgGain_e[band] - filtBuffer_e[band]);
- if (diff>0) {
- filtBuffer[band] >>= diff; /* Compensate for the scale change by shifting the mantissa. */
- filtBuffer_e[band] += diff; /* New gain is bigger, use its exponent */
- }
- else if (diff<0) {
- /* The buffered gains seem to be larger, but maybe there
- are some unused bits left in the mantissa */
-
- int reserve = CntLeadingZeros(fixp_abs(filtBuffer[band]))-1;
-
- if ((-diff) <= reserve) {
- /* There is enough space in the buffered mantissa so
- that we can take the new exponent as common.
- */
- filtBuffer[band] <<= (-diff);
- filtBuffer_e[band] += diff; /* becomes equal to *ptrNewExp */
- }
- else {
- filtBuffer[band] <<= reserve; /* Shift the mantissa as far as possible: */
- filtBuffer_e[band] -= reserve; /* Compensate in the exponent: */
-
- /* For the remaining difference, change the new gain value */
- diff = fixMin(-(reserve + diff),DFRACT_BITS-1);
- nrgGain[band] >>= diff;
- nrgGain_e[band] += diff;
- }
- }
- }
-}
-
-/*!
- \brief Shift left the mantissas of all subband samples
- in the giventime and frequency range by the specified number of bits.
-
- This function is used to rescale the audio data in the overlap buffer
- which has already been envelope adjusted with the last frame.
-*/
-void rescaleSubbandSamples(FIXP_DBL ** re, /*!< Real part of input and output subband samples */
- FIXP_DBL ** im, /*!< Imaginary part of input and output subband samples */
- int lowSubband, /*!< Begin of frequency range to process */
- int highSubband, /*!< End of frequency range to process */
- int start_pos, /*!< Begin of time rage (QMF-timeslot) */
- int next_pos, /*!< End of time rage (QMF-timeslot) */
- int shift) /*!< number of bits to shift */
-{
- int width = highSubband-lowSubband;
-
- if ( (width > 0) && (shift!=0) ) {
- if (im!=NULL) {
- for (int l=start_pos; l<next_pos; l++) {
- scaleValues(&re[l][lowSubband], width, shift);
- scaleValues(&im[l][lowSubband], width, shift);
- }
- } else
- {
- for (int l=start_pos; l<next_pos; l++) {
- scaleValues(&re[l][lowSubband], width, shift);
- }
- }
- }
-}
-
-
-/*!
- \brief Determine headroom for shifting
-
- Determine by how much the spectrum can be shifted left
- for better accuracy in later processing.
-
- \return Number of free bits in the biggest spectral value
-*/
-
-FIXP_DBL maxSubbandSample( FIXP_DBL ** re, /*!< Real part of input and output subband samples */
- FIXP_DBL ** im, /*!< Real part of input and output subband samples */
- int lowSubband, /*!< Begin of frequency range to process */
- int highSubband, /*!< Number of QMF bands to process */
- int start_pos, /*!< Begin of time rage (QMF-timeslot) */
- int next_pos /*!< End of time rage (QMF-timeslot) */
- )
-{
- FIXP_DBL maxVal = FL2FX_DBL(0.0f);
- unsigned int width = highSubband - lowSubband;
-
- FDK_ASSERT(width <= (64));
-
- if ( width > 0 ) {
- if (im!=NULL)
- {
- for (int l=start_pos; l<next_pos; l++)
- {
-#ifdef FUNCTION_FDK_get_maxval
- maxVal = FDK_get_maxval(maxVal, &re[l][lowSubband], &im[l][lowSubband], width);
-#else
- int k=width;
- FIXP_DBL *reTmp = &re[l][lowSubband];
- FIXP_DBL *imTmp = &im[l][lowSubband];
- do{
- FIXP_DBL tmp1 = *(reTmp++);
- FIXP_DBL tmp2 = *(imTmp++);
- maxVal |= (FIXP_DBL)((LONG)(tmp1)^((LONG)tmp1>>(DFRACT_BITS-1)));
- maxVal |= (FIXP_DBL)((LONG)(tmp2)^((LONG)tmp2>>(DFRACT_BITS-1)));
- } while(--k!=0);
-#endif
- }
- } else
- {
- for (int l=start_pos; l<next_pos; l++) {
- int k=width;
- FIXP_DBL *reTmp = &re[l][lowSubband];
- do{
- FIXP_DBL tmp = *(reTmp++);
- maxVal |= (FIXP_DBL)((LONG)(tmp)^((LONG)tmp>>(DFRACT_BITS-1)));
- }while(--k!=0);
- }
- }
- }
-
- return(maxVal);
-}
-
-#define SHIFT_BEFORE_SQUARE (3) /* (7/2) */
-/*!<
- If the accumulator does not provide enough overflow bits or
- does not provide a high dynamic range, the below energy calculation
- requires an additional shift operation for each sample.
- On the other hand, doing the shift allows using a single-precision
- multiplication for the square (at least 16bit x 16bit).
- For even values of OVRFLW_BITS (0, 2, 4, 6), saturated arithmetic
- is required for the energy accumulation.
- Theoretically, the sample-squares can sum up to a value of 76,
- requiring 7 overflow bits. However since such situations are *very*
- rare, accu can be limited to 64.
- In case native saturated arithmetic is not available, overflows
- can be prevented by replacing the above #define by
- #define SHIFT_BEFORE_SQUARE ((8 - OVRFLW_BITS) / 2)
- which will result in slightly reduced accuracy.
-*/
-
-/*!
- \brief Estimates the mean energy of each filter-bank channel for the
- duration of the current envelope
-
- This function is used when interpolFreq is true.
-*/
-/*static*/ void calcNrgPerSubband(FIXP_DBL **analysBufferReal, /*!< Real part of subband samples */
- FIXP_DBL **analysBufferImag, /*!< Imaginary part of subband samples */
- int lowSubband, /*!< Begin of the SBR frequency range */
- int highSubband, /*!< High end of the SBR frequency range */
- int start_pos, /*!< First QMF-slot of current envelope */
- int next_pos, /*!< Last QMF-slot of current envelope + 1 */
- SCHAR frameExp, /*!< Common exponent for all input samples */
- FIXP_DBL *nrgEst, /*!< resulting Energy (0..1) */
- SCHAR *nrgEst_e ) /*!< Exponent of resulting Energy */
-{
- FIXP_SGL invWidth;
- SCHAR preShift;
- SCHAR shift;
- FIXP_DBL sum;
- int k,l;
-
- /* Divide by width of envelope later: */
- invWidth = FX_DBL2FX_SGL(GetInvInt(next_pos - start_pos));
- /* The common exponent needs to be doubled because all mantissas are squared: */
- frameExp = frameExp << 1;
-
- for (k=lowSubband; k<highSubband; k++) {
- FIXP_DBL bufferReal[(((1024)/(32))+(6))];
- FIXP_DBL bufferImag[(((1024)/(32))+(6))];
- FIXP_DBL maxVal = FL2FX_DBL(0.0f);
-
- if (analysBufferImag!=NULL)
- {
- for (l=start_pos;l<next_pos;l++)
- {
- bufferImag[l] = analysBufferImag[l][k];
- maxVal |= (FIXP_DBL)((LONG)(bufferImag[l])^((LONG)bufferImag[l]>>(DFRACT_BITS-1)));
- bufferReal[l] = analysBufferReal[l][k];
- maxVal |= (FIXP_DBL)((LONG)(bufferReal[l])^((LONG)bufferReal[l]>>(DFRACT_BITS-1)));
- }
- }
- else
- {
- for (l=start_pos;l<next_pos;l++)
- {
- bufferReal[l] = analysBufferReal[l][k];
- maxVal |= (FIXP_DBL)((LONG)(bufferReal[l])^((LONG)bufferReal[l]>>(DFRACT_BITS-1)));
- }
- }
-
- if (maxVal!=FL2FXCONST_DBL(0.f)) {
-
-
- /* If the accu does not provide enough overflow bits, we cannot
- shift the samples up to the limit.
- Instead, keep up to 3 free bits in each sample, i.e. up to
- 6 bits after calculation of square.
- Please note the comment on saturated arithmetic above!
- */
- FIXP_DBL accu = FL2FXCONST_DBL(0.0f);
- preShift = CntLeadingZeros(maxVal)-1;
- preShift -= SHIFT_BEFORE_SQUARE;
-
- if (preShift>=0) {
- if (analysBufferImag!=NULL) {
- for (l=start_pos; l<next_pos; l++) {
- FIXP_DBL temp1 = bufferReal[l] << (int)preShift;
- FIXP_DBL temp2 = bufferImag[l] << (int)preShift;
- accu = fPow2AddDiv2(accu, temp1);
- accu = fPow2AddDiv2(accu, temp2);
- }
- } else
- {
- for (l=start_pos; l<next_pos; l++) {
- FIXP_DBL temp = bufferReal[l] << (int)preShift;
- accu = fPow2AddDiv2(accu, temp);
- }
- }
- }
- else { /* if negative shift value */
- int negpreShift = -preShift;
- if (analysBufferImag!=NULL) {
- for (l=start_pos; l<next_pos; l++) {
- FIXP_DBL temp1 = bufferReal[l] >> (int)negpreShift;
- FIXP_DBL temp2 = bufferImag[l] >> (int)negpreShift;
- accu = fPow2AddDiv2(accu, temp1);
- accu = fPow2AddDiv2(accu, temp2);
- }
- } else
- {
- for (l=start_pos; l<next_pos; l++) {
- FIXP_DBL temp = bufferReal[l] >> (int)negpreShift;
- accu = fPow2AddDiv2(accu, temp);
- }
- }
- }
- accu <<= 1;
-
- /* Convert double precision to Mantissa/Exponent: */
- shift = fNorm(accu);
- sum = accu << (int)shift;
-
- /* Divide by width of envelope and apply frame scale: */
- *nrgEst++ = fMult(sum, invWidth);
- shift += 2 * preShift;
- if (analysBufferImag!=NULL)
- *nrgEst_e++ = frameExp - shift;
- else
- *nrgEst_e++ = frameExp - shift + 1; /* +1 due to missing imag. part */
- } /* maxVal!=0 */
- else {
-
- /* Prevent a zero-mantissa-number from being misinterpreted
- due to its exponent. */
- *nrgEst++ = FL2FXCONST_DBL(0.0f);
- *nrgEst_e++ = 0;
- }
- }
-}
-
-/*!
- \brief Estimates the mean energy of each Scale factor band for the
- duration of the current envelope.
-
- This function is used when interpolFreq is false.
-*/
-/*static*/ void calcNrgPerSfb(FIXP_DBL **analysBufferReal, /*!< Real part of subband samples */
- FIXP_DBL **analysBufferImag, /*!< Imaginary part of subband samples */
- int nSfb, /*!< Number of scale factor bands */
- UCHAR *freqBandTable, /*!< First Subband for each Sfb */
- int start_pos, /*!< First QMF-slot of current envelope */
- int next_pos, /*!< Last QMF-slot of current envelope + 1 */
- SCHAR input_e, /*!< Common exponent for all input samples */
- FIXP_DBL *nrgEst, /*!< resulting Energy (0..1) */
- SCHAR *nrgEst_e ) /*!< Exponent of resulting Energy */
-{
- FIXP_SGL invWidth;
- FIXP_DBL temp;
- SCHAR preShift;
- SCHAR shift, sum_e;
- FIXP_DBL sum;
-
- int j,k,l,li,ui;
- FIXP_DBL sumAll, sumLine; /* Single precision would be sufficient,
- but overflow bits are required for accumulation */
-
- /* Divide by width of envelope later: */
- invWidth = FX_DBL2FX_SGL(GetInvInt(next_pos - start_pos));
- /* The common exponent needs to be doubled because all mantissas are squared: */
- input_e = input_e << 1;
-
- for(j=0; j<nSfb; j++) {
- li = freqBandTable[j];
- ui = freqBandTable[j+1];
-
- FIXP_DBL maxVal = maxSubbandSample( analysBufferReal,
- analysBufferImag,
- li,
- ui,
- start_pos,
- next_pos );
-
- if (maxVal!=FL2FXCONST_DBL(0.f)) {
-
- preShift = CntLeadingZeros(maxVal)-1;
-
- /* If the accu does not provide enough overflow bits, we cannot
- shift the samples up to the limit.
- Instead, keep up to 3 free bits in each sample, i.e. up to
- 6 bits after calculation of square.
- Please note the comment on saturated arithmetic above!
- */
- preShift -= SHIFT_BEFORE_SQUARE;
-
- sumAll = FL2FXCONST_DBL(0.0f);
-
-
- for (k=li; k<ui; k++) {
-
- sumLine = FL2FXCONST_DBL(0.0f);
-
- if (analysBufferImag!=NULL) {
- if (preShift>=0) {
- for (l=start_pos; l<next_pos; l++) {
- temp = analysBufferReal[l][k] << (int)preShift;
- sumLine += fPow2Div2(temp);
- temp = analysBufferImag[l][k] << (int)preShift;
- sumLine += fPow2Div2(temp);
-
- }
- } else {
- for (l=start_pos; l<next_pos; l++) {
- temp = analysBufferReal[l][k] >> -(int)preShift;
- sumLine += fPow2Div2(temp);
- temp = analysBufferImag[l][k] >> -(int)preShift;
- sumLine += fPow2Div2(temp);
- }
- }
- } else
- {
- if (preShift>=0) {
- for (l=start_pos; l<next_pos; l++) {
- temp = analysBufferReal[l][k] << (int)preShift;
- sumLine += fPow2Div2(temp);
- }
- } else {
- for (l=start_pos; l<next_pos; l++) {
- temp = analysBufferReal[l][k] >> -(int)preShift;
- sumLine += fPow2Div2(temp);
- }
- }
- }
-
- /* The number of QMF-channels per SBR bands may be up to 15.
- Shift right to avoid overflows in sum over all channels. */
- sumLine = sumLine >> (4-1);
- sumAll += sumLine;
- }
-
- /* Convert double precision to Mantissa/Exponent: */
- shift = fNorm(sumAll);
- sum = sumAll << (int)shift;
-
- /* Divide by width of envelope: */
- sum = fMult(sum,invWidth);
-
- /* Divide by width of Sfb: */
- sum = fMult(sum, FX_DBL2FX_SGL(GetInvInt(ui-li)));
-
- /* Set all Subband energies in the Sfb to the average energy: */
- if (analysBufferImag!=NULL)
- sum_e = input_e + 4 - shift; /* -4 to compensate right-shift */
- else
- sum_e = input_e + 4 + 1 - shift; /* -4 to compensate right-shift; +1 due to missing imag. part */
-
- sum_e -= 2 * preShift;
- } /* maxVal!=0 */
- else {
-
- /* Prevent a zero-mantissa-number from being misinterpreted
- due to its exponent. */
- sum = FL2FXCONST_DBL(0.0f);
- sum_e = 0;
- }
-
- for (k=li; k<ui; k++)
- {
- *nrgEst++ = sum;
- *nrgEst_e++ = sum_e;
- }
- }
-}
-
-
-/*!
- \brief Calculate gain, noise, and additional sine level for one subband.
-
- The resulting energy gain is given by mantissa and exponent.
-*/
-/*static*/ void calcSubbandGain(FIXP_DBL nrgRef, /*!< Reference Energy according to envelope data */
- SCHAR nrgRef_e, /*!< Reference Energy according to envelope data (exponent) */
- ENV_CALC_NRGS* nrgs,
- int i,
- FIXP_DBL tmpNoise, /*!< Relative noise level */
- SCHAR tmpNoise_e, /*!< Relative noise level (exponent) */
- UCHAR sinePresentFlag, /*!< Indicates if sine is present on band */
- UCHAR sineMapped, /*!< Indicates if sine must be added */
- int noNoiseFlag) /*!< Flag to suppress noise addition */
-{
- FIXP_DBL nrgEst = nrgs->nrgEst[i]; /*!< Energy in transposed signal */
- SCHAR nrgEst_e = nrgs->nrgEst_e[i]; /*!< Energy in transposed signal (exponent) */
- FIXP_DBL *ptrNrgGain = &nrgs->nrgGain[i]; /*!< Resulting energy gain */
- SCHAR *ptrNrgGain_e = &nrgs->nrgGain_e[i]; /*!< Resulting energy gain (exponent) */
- FIXP_DBL *ptrNoiseLevel = &nrgs->noiseLevel[i]; /*!< Resulting absolute noise energy */
- SCHAR *ptrNoiseLevel_e = &nrgs->noiseLevel_e[i]; /*!< Resulting absolute noise energy (exponent) */
- FIXP_DBL *ptrNrgSine = &nrgs->nrgSine[i]; /*!< Additional sine energy */
- SCHAR *ptrNrgSine_e = &nrgs->nrgSine_e[i]; /*!< Additional sine energy (exponent) */
-
- FIXP_DBL a, b, c;
- SCHAR a_e, b_e, c_e;
-
- /*
- This addition of 1 prevents divisions by zero in the reference code.
- For very small energies in nrgEst, it prevents the gains from becoming
- very high which could cause some trouble due to the smoothing.
- */
- b_e = (int)(nrgEst_e - 1);
- if (b_e>=0) {
- nrgEst = (FL2FXCONST_DBL(0.5f) >> (INT)fixMin(b_e+1,DFRACT_BITS-1)) + (nrgEst >> 1);
- nrgEst_e += 1; /* shift by 1 bit to avoid overflow */
-
- } else {
- nrgEst = (nrgEst >> (INT)(fixMin(-b_e+1,DFRACT_BITS-1))) + (FL2FXCONST_DBL(0.5f) >> 1);
- nrgEst_e = 2; /* shift by 1 bit to avoid overflow */
- }
-
- /* A = NrgRef * TmpNoise */
- a = fMult(nrgRef,tmpNoise);
- a_e = nrgRef_e + tmpNoise_e;
-
- /* B = 1 + TmpNoise */
- b_e = (int)(tmpNoise_e - 1);
- if (b_e>=0) {
- b = (FL2FXCONST_DBL(0.5f) >> (INT)fixMin(b_e+1,DFRACT_BITS-1)) + (tmpNoise >> 1);
- b_e = tmpNoise_e + 1; /* shift by 1 bit to avoid overflow */
- } else {
- b = (tmpNoise >> (INT)(fixMin(-b_e+1,DFRACT_BITS-1))) + (FL2FXCONST_DBL(0.5f) >> 1);
- b_e = 2; /* shift by 1 bit to avoid overflow */
- }
-
- /* noiseLevel = A / B = (NrgRef * TmpNoise) / (1 + TmpNoise) */
- FDK_divide_MantExp( a, a_e,
- b, b_e,
- ptrNoiseLevel, ptrNoiseLevel_e);
-
- if (sinePresentFlag) {
-
- /* C = (1 + TmpNoise) * NrgEst */
- c = fMult(b,nrgEst);
- c_e = b_e + nrgEst_e;
-
- /* gain = A / C = (NrgRef * TmpNoise) / (1 + TmpNoise) * NrgEst */
- FDK_divide_MantExp( a, a_e,
- c, c_e,
- ptrNrgGain, ptrNrgGain_e);
-
- if (sineMapped) {
-
- /* sineLevel = nrgRef/ (1 + TmpNoise) */
- FDK_divide_MantExp( nrgRef, nrgRef_e,
- b, b_e,
- ptrNrgSine, ptrNrgSine_e);
- }
- }
- else {
- if (noNoiseFlag) {
- /* B = NrgEst */
- b = nrgEst;
- b_e = nrgEst_e;
- }
- else {
- /* B = NrgEst * (1 + TmpNoise) */
- b = fMult(b,nrgEst);
- b_e = b_e + nrgEst_e;
- }
-
-
- /* gain = nrgRef / B */
- FDK_divide_MantExp( nrgRef, nrgRef_e,
- b, b_e,
- ptrNrgGain, ptrNrgGain_e);
- }
-}
-
-
-/*!
- \brief Calculate "average gain" for the specified subband range.
-
- This is rather a gain of the average magnitude than the average
- of gains!
- The result is used as a relative limit for all gains within the
- current "limiter band" (a certain frequency range).
-*/
-/*static*/ void calcAvgGain(ENV_CALC_NRGS* nrgs,
- int lowSubband, /*!< Begin of the limiter band */
- int highSubband, /*!< High end of the limiter band */
- FIXP_DBL *ptrSumRef,
- SCHAR *ptrSumRef_e,
- FIXP_DBL *ptrAvgGain, /*!< Resulting overall gain (mantissa) */
- SCHAR *ptrAvgGain_e) /*!< Resulting overall gain (exponent) */
-{
- FIXP_DBL *nrgRef = nrgs->nrgRef; /*!< Reference Energy according to envelope data */
- SCHAR *nrgRef_e = nrgs->nrgRef_e; /*!< Reference Energy according to envelope data (exponent) */
- FIXP_DBL *nrgEst = nrgs->nrgEst; /*!< Energy in transposed signal */
- SCHAR *nrgEst_e = nrgs->nrgEst_e; /*!< Energy in transposed signal (exponent) */
-
- FIXP_DBL sumRef = 1;
- FIXP_DBL sumEst = 1;
- SCHAR sumRef_e = -FRACT_BITS;
- SCHAR sumEst_e = -FRACT_BITS;
- int k;
-
- for (k=lowSubband; k<highSubband; k++){
- /* Add nrgRef[k] to sumRef: */
- FDK_add_MantExp( sumRef, sumRef_e,
- nrgRef[k], nrgRef_e[k],
- &sumRef, &sumRef_e );
-
- /* Add nrgEst[k] to sumEst: */
- FDK_add_MantExp( sumEst, sumEst_e,
- nrgEst[k], nrgEst_e[k],
- &sumEst, &sumEst_e );
- }
-
- FDK_divide_MantExp(sumRef, sumRef_e,
- sumEst, sumEst_e,
- ptrAvgGain, ptrAvgGain_e);
-
- *ptrSumRef = sumRef;
- *ptrSumRef_e = sumRef_e;
-}
-
-
-/*!
- \brief Amplify one timeslot of the signal with the calculated gains
- and add the noisefloor.
-*/
-
-/*static*/ void adjustTimeSlotLC(FIXP_DBL *ptrReal, /*!< Subband samples to be adjusted, real part */
- ENV_CALC_NRGS* nrgs,
- UCHAR *ptrHarmIndex, /*!< Harmonic index */
- int lowSubband, /*!< Lowest QMF-channel in the currently used SBR range. */
- int noSubbands, /*!< Number of QMF subbands */
- int scale_change, /*!< Number of bits to shift adjusted samples */
- int noNoiseFlag, /*!< Flag to suppress noise addition */
- int *ptrPhaseIndex, /*!< Start index to random number array */
- int fCldfb) /*!< CLDFB 80 flag */
-{
- FIXP_DBL *pGain = nrgs->nrgGain; /*!< Gains of current envelope */
- FIXP_DBL *pNoiseLevel = nrgs->noiseLevel; /*!< Noise levels of current envelope */
- FIXP_DBL *pSineLevel = nrgs->nrgSine; /*!< Sine levels */
-
- int k;
- int index = *ptrPhaseIndex;
- UCHAR harmIndex = *ptrHarmIndex;
- UCHAR freqInvFlag = (lowSubband & 1);
- FIXP_DBL signalReal, sineLevel, sineLevelNext, sineLevelPrev;
- int tone_count = 0;
- int sineSign = 1;
-
- #define C1 ((FIXP_SGL)FL2FXCONST_SGL(2.f*0.00815f))
- #define C1_CLDFB ((FIXP_SGL)FL2FXCONST_SGL(2.f*0.16773f))
-
- /*
- First pass for k=0 pulled out of the loop:
- */
-
- index = (index + 1) & (SBR_NF_NO_RANDOM_VAL - 1);
-
- /*
- The next multiplication constitutes the actual envelope adjustment
- of the signal and should be carried out with full accuracy
- (supplying #FRACT_BITS valid bits).
- */
- signalReal = fMultDiv2(*ptrReal,*pGain++) << ((int)scale_change);
- sineLevel = *pSineLevel++;
- sineLevelNext = (noSubbands > 1) ? pSineLevel[0] : FL2FXCONST_DBL(0.0f);
-
- if (sineLevel!=FL2FXCONST_DBL(0.0f)) tone_count++;
-
- else if (!noNoiseFlag)
- /* Add noisefloor to the amplified signal */
- signalReal += (fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][0], pNoiseLevel[0])<<4);
-
- if (fCldfb) {
-
- if (!(harmIndex&0x1)) {
- /* harmIndex 0,2 */
- signalReal += (harmIndex&0x2) ? -sineLevel : sineLevel;
- *ptrReal++ = signalReal;
- }
- else {
- /* harmIndex 1,3 in combination with freqInvFlag */
- int shift = (int) (scale_change+1);
- shift = (shift>=0) ? fixMin(DFRACT_BITS-1,shift) : fixMax(-(DFRACT_BITS-1),shift);
-
- FIXP_DBL tmp1 = scaleValue( fMultDiv2(C1_CLDFB, sineLevel), -shift );
-
- FIXP_DBL tmp2 = fMultDiv2(C1_CLDFB, sineLevelNext);
-
-
- /* save switch and compare operations and reduce to XOR statement */
- if ( ((harmIndex>>1)&0x1)^freqInvFlag) {
- *(ptrReal-1) += tmp1;
- signalReal -= tmp2;
- } else {
- *(ptrReal-1) -= tmp1;
- signalReal += tmp2;
- }
- *ptrReal++ = signalReal;
- freqInvFlag = !freqInvFlag;
- }
-
- } else
- {
- if (!(harmIndex&0x1)) {
- /* harmIndex 0,2 */
- signalReal += (harmIndex&0x2) ? -sineLevel : sineLevel;
- *ptrReal++ = signalReal;
- }
- else {
- /* harmIndex 1,3 in combination with freqInvFlag */
- int shift = (int) (scale_change+1);
- shift = (shift>=0) ? fixMin(DFRACT_BITS-1,shift) : fixMax(-(DFRACT_BITS-1),shift);
-
- FIXP_DBL tmp1 = (shift>=0) ? ( fMultDiv2(C1, sineLevel) >> shift )
- : ( fMultDiv2(C1, sineLevel) << (-shift) );
- FIXP_DBL tmp2 = fMultDiv2(C1, sineLevelNext);
-
-
- /* save switch and compare operations and reduce to XOR statement */
- if ( ((harmIndex>>1)&0x1)^freqInvFlag) {
- *(ptrReal-1) += tmp1;
- signalReal -= tmp2;
- } else {
- *(ptrReal-1) -= tmp1;
- signalReal += tmp2;
- }
- *ptrReal++ = signalReal;
- freqInvFlag = !freqInvFlag;
- }
- }
-
- pNoiseLevel++;
-
- if ( noSubbands > 2 ) {
- if (!(harmIndex&0x1)) {
- /* harmIndex 0,2 */
- if(!harmIndex)
- {
- sineSign = 0;
- }
-
- for (k=noSubbands-2; k!=0; k--) {
- FIXP_DBL sinelevel = *pSineLevel++;
- index++;
- if (((signalReal = (sineSign ? -sinelevel : sinelevel)) == FL2FXCONST_DBL(0.0f)) && !noNoiseFlag)
- {
- /* Add noisefloor to the amplified signal */
- index &= (SBR_NF_NO_RANDOM_VAL - 1);
- signalReal += (fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][0], pNoiseLevel[0])<<4);
- }
-
- /* The next multiplication constitutes the actual envelope adjustment of the signal. */
- signalReal += fMultDiv2(*ptrReal,*pGain++) << ((int)scale_change);
-
- pNoiseLevel++;
- *ptrReal++ = signalReal;
- } /* for ... */
- }
- else {
- /* harmIndex 1,3 in combination with freqInvFlag */
- if (harmIndex==1) freqInvFlag = !freqInvFlag;
-
- for (k=noSubbands-2; k!=0; k--) {
- index++;
- /* The next multiplication constitutes the actual envelope adjustment of the signal. */
- signalReal = fMultDiv2(*ptrReal,*pGain++) << ((int)scale_change);
-
- if (*pSineLevel++!=FL2FXCONST_DBL(0.0f)) tone_count++;
- else if (!noNoiseFlag) {
- /* Add noisefloor to the amplified signal */
- index &= (SBR_NF_NO_RANDOM_VAL - 1);
- signalReal += (fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][0], pNoiseLevel[0])<<4);
- }
-
- pNoiseLevel++;
-
- if (tone_count <= 16) {
- FIXP_DBL addSine = fMultDiv2((pSineLevel[-2] - pSineLevel[0]), C1);
- signalReal += (freqInvFlag) ? (-addSine) : (addSine);
- }
-
- *ptrReal++ = signalReal;
- freqInvFlag = !freqInvFlag;
- } /* for ... */
- }
- }
-
- if (noSubbands > -1) {
- index++;
- /* The next multiplication constitutes the actual envelope adjustment of the signal. */
- signalReal = fMultDiv2(*ptrReal,*pGain) << ((int)scale_change);
- sineLevelPrev = fMultDiv2(pSineLevel[-1],FL2FX_SGL(0.0163f));
- sineLevel = pSineLevel[0];
-
- if (pSineLevel[0]!=FL2FXCONST_DBL(0.0f)) tone_count++;
- else if (!noNoiseFlag) {
- /* Add noisefloor to the amplified signal */
- index &= (SBR_NF_NO_RANDOM_VAL - 1);
- signalReal = signalReal + (fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][0], pNoiseLevel[0])<<4);
- }
-
- if (!(harmIndex&0x1)) {
- /* harmIndex 0,2 */
- *ptrReal = signalReal + ( (sineSign) ? -sineLevel : sineLevel);
- }
- else {
- /* harmIndex 1,3 in combination with freqInvFlag */
- if(tone_count <= 16){
- if (freqInvFlag) {
- *ptrReal++ = signalReal - sineLevelPrev;
- if (noSubbands + lowSubband < 63)
- *ptrReal = *ptrReal + fMultDiv2(C1, sineLevel);
- }
- else {
- *ptrReal++ = signalReal + sineLevelPrev;
- if (noSubbands + lowSubband < 63)
- *ptrReal = *ptrReal - fMultDiv2(C1, sineLevel);
- }
- }
- else *ptrReal = signalReal;
- }
- }
- *ptrHarmIndex = (harmIndex + 1) & 3;
- *ptrPhaseIndex = index & (SBR_NF_NO_RANDOM_VAL - 1);
-}
-void adjustTimeSlotHQ(FIXP_DBL *RESTRICT ptrReal, /*!< Subband samples to be adjusted, real part */
- FIXP_DBL *RESTRICT ptrImag, /*!< Subband samples to be adjusted, imag part */
- HANDLE_SBR_CALCULATE_ENVELOPE h_sbr_cal_env,
- ENV_CALC_NRGS* nrgs,
- int lowSubband, /*!< Lowest QMF-channel in the currently used SBR range. */
- int noSubbands, /*!< Number of QMF subbands */
- int scale_change, /*!< Number of bits to shift adjusted samples */
- FIXP_SGL smooth_ratio, /*!< Impact of last envelope */
- int noNoiseFlag, /*!< Start index to random number array */
- int filtBufferNoiseShift) /*!< Shift factor of filtBufferNoise */
-{
-
- FIXP_DBL *RESTRICT gain = nrgs->nrgGain; /*!< Gains of current envelope */
- FIXP_DBL *RESTRICT noiseLevel = nrgs->noiseLevel; /*!< Noise levels of current envelope */
- FIXP_DBL *RESTRICT pSineLevel = nrgs->nrgSine; /*!< Sine levels */
-
- FIXP_DBL *RESTRICT filtBuffer = h_sbr_cal_env->filtBuffer; /*!< Gains of last envelope */
- FIXP_DBL *RESTRICT filtBufferNoise = h_sbr_cal_env->filtBufferNoise; /*!< Noise levels of last envelope */
- UCHAR *RESTRICT ptrHarmIndex =&h_sbr_cal_env->harmIndex; /*!< Harmonic index */
- int *RESTRICT ptrPhaseIndex =&h_sbr_cal_env->phaseIndex; /*!< Start index to random number array */
-
- int k;
- FIXP_DBL signalReal, signalImag;
- FIXP_DBL noiseReal, noiseImag;
- FIXP_DBL smoothedGain, smoothedNoise;
- FIXP_SGL direct_ratio = /*FL2FXCONST_SGL(1.0f) */ (FIXP_SGL)MAXVAL_SGL - smooth_ratio;
- int index = *ptrPhaseIndex;
- UCHAR harmIndex = *ptrHarmIndex;
- register int freqInvFlag = (lowSubband & 1);
- FIXP_DBL sineLevel;
- int shift;
-
- *ptrPhaseIndex = (index+noSubbands) & (SBR_NF_NO_RANDOM_VAL - 1);
- *ptrHarmIndex = (harmIndex + 1) & 3;
-
- /*
- Possible optimization:
- smooth_ratio and harmIndex stay constant during the loop.
- It might be faster to include a separate loop in each path.
-
- the check for smooth_ratio is now outside the loop and the workload
- of the whole function decreased by about 20 %
- */
-
- filtBufferNoiseShift += 1; /* due to later use of fMultDiv2 instead of fMult */
- if (filtBufferNoiseShift<0)
- shift = fixMin(DFRACT_BITS-1,-filtBufferNoiseShift);
- else
- shift = fixMin(DFRACT_BITS-1, filtBufferNoiseShift);
-
- if (smooth_ratio > FL2FXCONST_SGL(0.0f)) {
-
- for (k=0; k<noSubbands; k++) {
- /*
- Smoothing: The old envelope has been bufferd and a certain ratio
- of the old gains and noise levels is used.
- */
-
- smoothedGain = fMult(smooth_ratio,filtBuffer[k]) +
- fMult(direct_ratio,gain[k]);
-
- if (filtBufferNoiseShift<0) {
- smoothedNoise = (fMultDiv2(smooth_ratio,filtBufferNoise[k])>>shift) +
- fMult(direct_ratio,noiseLevel[k]);
- }
- else {
- smoothedNoise = (fMultDiv2(smooth_ratio,filtBufferNoise[k])<<shift) +
- fMult(direct_ratio,noiseLevel[k]);
- }
-
- /*
- The next 2 multiplications constitute the actual envelope adjustment
- of the signal and should be carried out with full accuracy
- (supplying #DFRACT_BITS valid bits).
- */
- signalReal = fMultDiv2(*ptrReal,smoothedGain)<<((int)scale_change);
- signalImag = fMultDiv2(*ptrImag,smoothedGain)<<((int)scale_change);
-
- index++;
-
- if (pSineLevel[k] != FL2FXCONST_DBL(0.0f)) {
- sineLevel = pSineLevel[k];
-
- switch(harmIndex) {
- case 0:
- *ptrReal++ = (signalReal + sineLevel);
- *ptrImag++ = (signalImag);
- break;
- case 2:
- *ptrReal++ = (signalReal - sineLevel);
- *ptrImag++ = (signalImag);
- break;
- case 1:
- *ptrReal++ = (signalReal);
- if (freqInvFlag)
- *ptrImag++ = (signalImag - sineLevel);
- else
- *ptrImag++ = (signalImag + sineLevel);
- break;
- case 3:
- *ptrReal++ = signalReal;
- if (freqInvFlag)
- *ptrImag++ = (signalImag + sineLevel);
- else
- *ptrImag++ = (signalImag - sineLevel);
- break;
- }
- }
- else {
- if (noNoiseFlag) {
- /* Just the amplified signal is saved */
- *ptrReal++ = (signalReal);
- *ptrImag++ = (signalImag);
- }
- else {
- /* Add noisefloor to the amplified signal */
- index &= (SBR_NF_NO_RANDOM_VAL - 1);
- noiseReal = fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][0], smoothedNoise)<<4;
- noiseImag = fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][1], smoothedNoise)<<4;
- *ptrReal++ = (signalReal + noiseReal);
- *ptrImag++ = (signalImag + noiseImag);
- }
- }
- freqInvFlag ^= 1;
- }
-
- }
- else
- {
- for (k=0; k<noSubbands; k++)
- {
- smoothedGain = gain[k];
- signalReal = fMultDiv2(*ptrReal, smoothedGain) << scale_change;
- signalImag = fMultDiv2(*ptrImag, smoothedGain) << scale_change;
-
- index++;
-
- if ((sineLevel = pSineLevel[k]) != FL2FXCONST_DBL(0.0f))
- {
- switch (harmIndex)
- {
- case 0:
- signalReal += sineLevel;
- break;
- case 1:
- if (freqInvFlag)
- signalImag -= sineLevel;
- else
- signalImag += sineLevel;
- break;
- case 2:
- signalReal -= sineLevel;
- break;
- case 3:
- if (freqInvFlag)
- signalImag += sineLevel;
- else
- signalImag -= sineLevel;
- break;
- }
- }
- else
- {
- if (noNoiseFlag == 0)
- {
- /* Add noisefloor to the amplified signal */
- smoothedNoise = noiseLevel[k];
- index &= (SBR_NF_NO_RANDOM_VAL - 1);
- noiseReal = fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][0], smoothedNoise);
- noiseImag = fMultDiv2(FDK_sbrDecoder_sbr_randomPhase[index][1], smoothedNoise);
- signalReal += noiseReal<<4;
- signalImag += noiseImag<<4;
- }
- }
- *ptrReal++ = signalReal;
- *ptrImag++ = signalImag;
-
- freqInvFlag ^= 1;
- }
- }
-}
-
-
-/*!
- \brief Reset limiter bands.
-
- Build frequency band table for the gain limiter dependent on
- the previously generated transposer patch areas.
-
- \return SBRDEC_OK if ok, SBRDEC_UNSUPPORTED_CONFIG on error
-*/
-SBR_ERROR
-ResetLimiterBands ( UCHAR *limiterBandTable, /*!< Resulting band borders in QMF channels */
- UCHAR *noLimiterBands, /*!< Resulting number of limiter band */
- UCHAR *freqBandTable, /*!< Table with possible band borders */
- int noFreqBands, /*!< Number of bands in freqBandTable */
- const PATCH_PARAM *patchParam, /*!< Transposer patch parameters */
- int noPatches, /*!< Number of transposer patches */
- int limiterBands) /*!< Selected 'band density' from bitstream */
-{
- int i, k, isPatchBorder[2], loLimIndex, hiLimIndex, tempNoLim, nBands;
- UCHAR workLimiterBandTable[MAX_FREQ_COEFFS / 2 + MAX_NUM_PATCHES + 1];
- int patchBorders[MAX_NUM_PATCHES + 1];
- int kx, k2;
- FIXP_DBL temp;
-
- int lowSubband = freqBandTable[0];
- int highSubband = freqBandTable[noFreqBands];
-
- /* 1 limiter band. */
- if(limiterBands == 0) {
- limiterBandTable[0] = 0;
- limiterBandTable[1] = highSubband - lowSubband;
- nBands = 1;
- } else {
- for (i = 0; i < noPatches; i++) {
- patchBorders[i] = patchParam[i].guardStartBand - lowSubband;
- }
- patchBorders[i] = highSubband - lowSubband;
-
- /* 1.2, 2, or 3 limiter bands/octave plus bandborders at patchborders. */
- for (k = 0; k <= noFreqBands; k++) {
- workLimiterBandTable[k] = freqBandTable[k] - lowSubband;
- }
- for (k = 1; k < noPatches; k++) {
- workLimiterBandTable[noFreqBands + k] = patchBorders[k];
- }
-
- tempNoLim = nBands = noFreqBands + noPatches - 1;
- shellsort(workLimiterBandTable, tempNoLim + 1);
-
- loLimIndex = 0;
- hiLimIndex = 1;
-
-
- while (hiLimIndex <= tempNoLim) {
- k2 = workLimiterBandTable[hiLimIndex] + lowSubband;
- kx = workLimiterBandTable[loLimIndex] + lowSubband;
-
- temp = FX_SGL2FX_DBL(FDK_getNumOctavesDiv8(kx,k2)); /* Number of octaves */
- temp = fMult(temp, FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4[limiterBands]);
-
- if (temp < FL2FXCONST_DBL (0.49f)>>5) {
- if (workLimiterBandTable[hiLimIndex] == workLimiterBandTable[loLimIndex]) {
- workLimiterBandTable[hiLimIndex] = highSubband;
- nBands--;
- hiLimIndex++;
- continue;
- }
- isPatchBorder[0] = isPatchBorder[1] = 0;
- for (k = 0; k <= noPatches; k++) {
- if (workLimiterBandTable[hiLimIndex] == patchBorders[k]) {
- isPatchBorder[1] = 1;
- break;
- }
- }
- if (!isPatchBorder[1]) {
- workLimiterBandTable[hiLimIndex] = highSubband;
- nBands--;
- hiLimIndex++;
- continue;
- }
- for (k = 0; k <= noPatches; k++) {
- if (workLimiterBandTable[loLimIndex] == patchBorders[k]) {
- isPatchBorder[0] = 1;
- break;
- }
- }
- if (!isPatchBorder[0]) {
- workLimiterBandTable[loLimIndex] = highSubband;
- nBands--;
- }
- }
- loLimIndex = hiLimIndex;
- hiLimIndex++;
-
- }
- shellsort(workLimiterBandTable, tempNoLim + 1);
-
- /* Test if algorithm exceeded maximum allowed limiterbands */
- if( nBands > MAX_NUM_LIMITERS || nBands <= 0) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- /* Copy limiterbands from working buffer into final destination */
- for (k = 0; k <= nBands; k++) {
- limiterBandTable[k] = workLimiterBandTable[k];
- }
- }
- *noLimiterBands = nBands;
-
- return SBRDEC_OK;
-}
-
diff --git a/libSBRdec/src/env_calc.h b/libSBRdec/src/env_calc.h
deleted file mode 100644
index 8154166..0000000
--- a/libSBRdec/src/env_calc.h
+++ /dev/null
@@ -1,165 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Envelope calculation prototypes
-*/
-#ifndef __ENV_CALC_H
-#define __ENV_CALC_H
-
-#include "sbrdecoder.h"
-#include "env_extr.h" /* for HANDLE_SBR_HEADER_DATA */
-#include "sbr_scale.h"
-
-
-typedef struct
-{
- FIXP_DBL filtBuffer[MAX_FREQ_COEFFS]; /*!< previous gains (required for smoothing) */
- FIXP_DBL filtBufferNoise[MAX_FREQ_COEFFS]; /*!< previous noise levels (required for smoothing) */
- SCHAR filtBuffer_e[MAX_FREQ_COEFFS]; /*!< Exponents of previous gains */
- SCHAR filtBufferNoise_e; /*!< Common exponent of previous noise levels */
-
- int startUp; /*!< flag to signal initial conditions in buffers */
- int phaseIndex; /*!< Index for randomPase array */
- int prevTranEnv; /*!< The transient envelope of the previous frame. */
-
- int harmFlagsPrev[(MAX_FREQ_COEFFS+15)/16];
- /*!< Words with 16 flags each indicating where a sine was added in the previous frame.*/
- UCHAR harmIndex; /*!< Current phase of synthetic sine */
-
-}
-SBR_CALCULATE_ENVELOPE;
-
-typedef SBR_CALCULATE_ENVELOPE *HANDLE_SBR_CALCULATE_ENVELOPE;
-
-
-
-void
-calculateSbrEnvelope (QMF_SCALE_FACTOR *sbrScaleFactor,
- HANDLE_SBR_CALCULATE_ENVELOPE h_sbr_cal_env,
- HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA hFrameData,
- FIXP_DBL **analysBufferReal,
- FIXP_DBL **analysBufferImag, /*!< Imag part of subband samples to be processed */
- const int useLP,
- FIXP_DBL *degreeAlias, /*!< Estimated aliasing for each QMF channel */
- const UINT flags,
- const int frameErrorFlag
- );
-
-SBR_ERROR
-createSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hSbrCalculateEnvelope,
- HANDLE_SBR_HEADER_DATA hHeaderData,
- const int chan,
- const UINT flags);
-
-int
-deleteSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hSbrCalculateEnvelope);
-
-void
-resetSbrEnvelopeCalc (HANDLE_SBR_CALCULATE_ENVELOPE hCalEnv);
-
-SBR_ERROR
-ResetLimiterBands ( UCHAR *limiterBandTable,
- UCHAR *noLimiterBands,
- UCHAR *freqBandTable,
- int noFreqBands,
- const PATCH_PARAM *patchParam,
- int noPatches,
- int limiterBands);
-
-void rescaleSubbandSamples( FIXP_DBL ** re,
- FIXP_DBL ** im,
- int lowSubband, int noSubbands,
- int start_pos, int next_pos,
- int shift);
-
-FIXP_DBL maxSubbandSample( FIXP_DBL ** analysBufferReal_m,
- FIXP_DBL ** analysBufferImag_m,
- int lowSubband,
- int highSubband,
- int start_pos,
- int stop_pos);
-
-#endif // __ENV_CALC_H
diff --git a/libSBRdec/src/env_dec.cpp b/libSBRdec/src/env_dec.cpp
deleted file mode 100644
index 24b2d3b..0000000
--- a/libSBRdec/src/env_dec.cpp
+++ /dev/null
@@ -1,852 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief envelope decoding
- This module provides envelope decoding and error concealment algorithms. The main
- entry point is decodeSbrData().
-
- \sa decodeSbrData(),\ref documentationOverview
-*/
-
-#include "env_dec.h"
-
-#include "env_extr.h"
-#include "transcendent.h"
-
-#include "genericStds.h"
-
-
-static void decodeEnvelope (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_sbr_data,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data_otherChannel);
-static void sbr_envelope_unmapping (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_data_left,
- HANDLE_SBR_FRAME_DATA h_data_right);
-static void requantizeEnvelopeData (HANDLE_SBR_FRAME_DATA h_sbr_data,
- int ampResolution);
-static void deltaToLinearPcmEnvelopeDecoding (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_sbr_data,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data);
-static void decodeNoiseFloorlevels (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_sbr_data,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data);
-static void timeCompensateFirstEnvelope (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_sbr_data,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data);
-static int checkEnvelopeData (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_sbr_data,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data);
-
-
-
-#define SBR_ENERGY_PAN_OFFSET (12 << ENV_EXP_FRACT)
-#define SBR_MAX_ENERGY (35 << ENV_EXP_FRACT)
-
-#define DECAY ( 1 << ENV_EXP_FRACT)
-
-#if ENV_EXP_FRACT
-#define DECAY_COUPLING ( 1 << (ENV_EXP_FRACT-1) ) /*!< corresponds to a value of 0.5 */
-#else
-#define DECAY_COUPLING 1 /*!< If the energy data is not shifted, use 1 instead of 0.5 */
-#endif
-
-
-/*!
- \brief Convert table index
-*/
-static int indexLow2High(int offset, /*!< mapping factor */
- int index, /*!< index to scalefactor band */
- int res) /*!< frequency resolution */
-{
- if(res == 0)
- {
- if (offset >= 0)
- {
- if (index < offset)
- return(index);
- else
- return(2*index - offset);
- }
- else
- {
- offset = -offset;
- if (index < offset)
- return(2*index+index);
- else
- return(2*index + offset);
- }
- }
- else
- return(index);
-}
-
-
-/*!
- \brief Update previous envelope value for delta-coding
-
- The current envelope values needs to be stored for delta-coding
- in the next frame. The stored envelope is always represented with
- the high frequency resolution. If the current envelope uses the
- low frequency resolution, the energy value will be mapped to the
- corresponding high-res bands.
-*/
-static void mapLowResEnergyVal(FIXP_SGL currVal, /*!< current energy value */
- FIXP_SGL* prevData,/*!< pointer to previous data vector */
- int offset, /*!< mapping factor */
- int index, /*!< index to scalefactor band */
- int res) /*!< frequeny resolution */
-{
- if(res == 0)
- {
- if (offset >= 0)
- {
- if(index < offset)
- prevData[index] = currVal;
- else
- {
- prevData[2*index - offset] = currVal;
- prevData[2*index+1 - offset] = currVal;
- }
- }
- else
- {
- offset = -offset;
- if (index < offset)
- {
- prevData[3*index] = currVal;
- prevData[3*index+1] = currVal;
- prevData[3*index+2] = currVal;
- }
- else
- {
- prevData[2*index + offset] = currVal;
- prevData[2*index + 1 + offset] = currVal;
- }
- }
- }
- else
- prevData[index] = currVal;
-}
-
-
-
-/*!
- \brief Convert raw envelope and noisefloor data to energy levels
-
- This function is being called by sbrDecoder_ParseElement() and provides two important algorithms:
-
- First the function decodes envelopes and noise floor levels as described in requantizeEnvelopeData()
- and sbr_envelope_unmapping(). The function also implements concealment algorithms in case there are errors
- within the sbr data. For both operations fractional arithmetic is used.
- Therefore you might encounter different output values on your target
- system compared to the reference implementation.
-*/
-void
-decodeSbrData (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_data_left, /*!< pointer to left channel frame data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data_left, /*!< pointer to left channel previous frame data */
- HANDLE_SBR_FRAME_DATA h_data_right, /*!< pointer to right channel frame data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data_right)/*!< pointer to right channel previous frame data */
-{
- FIXP_SGL tempSfbNrgPrev[MAX_FREQ_COEFFS];
- int errLeft;
-
- /* Save previous energy values to be able to reuse them later for concealment. */
- FDKmemcpy (tempSfbNrgPrev, h_prev_data_left->sfb_nrg_prev, MAX_FREQ_COEFFS * sizeof(FIXP_SGL));
-
- decodeEnvelope (hHeaderData, h_data_left, h_prev_data_left, h_prev_data_right);
- decodeNoiseFloorlevels (hHeaderData, h_data_left, h_prev_data_left);
-
- if(h_data_right != NULL) {
- errLeft = hHeaderData->frameErrorFlag;
- decodeEnvelope (hHeaderData, h_data_right, h_prev_data_right, h_prev_data_left);
- decodeNoiseFloorlevels (hHeaderData, h_data_right, h_prev_data_right);
-
- if (!errLeft && hHeaderData->frameErrorFlag) {
- /* If an error occurs in the right channel where the left channel seemed ok,
- we apply concealment also on the left channel. This ensures that the coupling
- modes of both channels match and that we have the same number of envelopes in
- coupling mode.
- However, as the left channel has already been processed before, the resulting
- energy levels are not the same as if the left channel had been concealed
- during the first call of decodeEnvelope().
- */
- /* Restore previous energy values for concealment, because the values have been
- overwritten by the first call of decodeEnvelope(). */
- FDKmemcpy (h_prev_data_left->sfb_nrg_prev, tempSfbNrgPrev, MAX_FREQ_COEFFS * sizeof(FIXP_SGL));
- /* Do concealment */
- decodeEnvelope (hHeaderData, h_data_left, h_prev_data_left, h_prev_data_right);
- }
-
- if (h_data_left->coupling) {
- sbr_envelope_unmapping (hHeaderData, h_data_left, h_data_right);
- }
- }
-
- /* Display the data for debugging: */
-}
-
-
-/*!
- \brief Convert from coupled channels to independent L/R data
-*/
-static void
-sbr_envelope_unmapping (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_data_left, /*!< pointer to left channel */
- HANDLE_SBR_FRAME_DATA h_data_right) /*!< pointer to right channel */
-{
- int i;
- FIXP_SGL tempL_m, tempR_m, tempRplus1_m, newL_m, newR_m;
- SCHAR tempL_e, tempR_e, tempRplus1_e, newL_e, newR_e;
-
-
- /* 1. Unmap (already dequantized) coupled envelope energies */
-
- for (i = 0; i < h_data_left->nScaleFactors; i++) {
- tempR_m = (FIXP_SGL)((LONG)h_data_right->iEnvelope[i] & MASK_M);
- tempR_e = (SCHAR)((LONG)h_data_right->iEnvelope[i] & MASK_E);
-
- tempR_e -= (18 + NRG_EXP_OFFSET); /* -18 = ld(UNMAPPING_SCALE / h_data_right->nChannels) */
- tempL_m = (FIXP_SGL)((LONG)h_data_left->iEnvelope[i] & MASK_M);
- tempL_e = (SCHAR)((LONG)h_data_left->iEnvelope[i] & MASK_E);
-
- tempL_e -= NRG_EXP_OFFSET;
-
- /* Calculate tempRight+1 */
- FDK_add_MantExp( tempR_m, tempR_e,
- FL2FXCONST_SGL(0.5f), 1, /* 1.0 */
- &tempRplus1_m, &tempRplus1_e);
-
- FDK_divide_MantExp( tempL_m, tempL_e+1, /* 2 * tempLeft */
- tempRplus1_m, tempRplus1_e,
- &newR_m, &newR_e );
-
- if (newR_m >= ((FIXP_SGL)MAXVAL_SGL - ROUNDING)) {
- newR_m >>= 1;
- newR_e += 1;
- }
-
- newL_m = FX_DBL2FX_SGL(fMult(tempR_m,newR_m));
- newL_e = tempR_e + newR_e;
-
- h_data_right->iEnvelope[i] = ((FIXP_SGL)((SHORT)(FIXP_SGL)(newR_m + ROUNDING) & MASK_M)) +
- (FIXP_SGL)((SHORT)(FIXP_SGL)(newR_e + NRG_EXP_OFFSET) & MASK_E);
- h_data_left->iEnvelope[i] = ((FIXP_SGL)((SHORT)(FIXP_SGL)(newL_m + ROUNDING) & MASK_M)) +
- (FIXP_SGL)((SHORT)(FIXP_SGL)(newL_e + NRG_EXP_OFFSET) & MASK_E);
- }
-
- /* 2. Dequantize and unmap coupled noise floor levels */
-
- for (i = 0; i < hHeaderData->freqBandData.nNfb * h_data_left->frameInfo.nNoiseEnvelopes; i++) {
-
- tempL_e = (SCHAR)(6 - (LONG)h_data_left->sbrNoiseFloorLevel[i]);
- tempR_e = (SCHAR)((LONG)h_data_right->sbrNoiseFloorLevel[i] - 12) /*SBR_ENERGY_PAN_OFFSET*/;
-
- /* Calculate tempR+1 */
- FDK_add_MantExp( FL2FXCONST_SGL(0.5f), 1+tempR_e, /* tempR */
- FL2FXCONST_SGL(0.5f), 1, /* 1.0 */
- &tempRplus1_m, &tempRplus1_e);
-
- /* Calculate 2*tempLeft/(tempR+1) */
- FDK_divide_MantExp( FL2FXCONST_SGL(0.5f), tempL_e+2, /* 2 * tempLeft */
- tempRplus1_m, tempRplus1_e,
- &newR_m, &newR_e );
-
- /* if (newR_m >= ((FIXP_SGL)MAXVAL_SGL - ROUNDING)) {
- newR_m >>= 1;
- newR_e += 1;
- } */
-
- /* L = tempR * R */
- newL_m = newR_m;
- newL_e = newR_e + tempR_e;
- h_data_right->sbrNoiseFloorLevel[i] = ((FIXP_SGL)((SHORT)(FIXP_SGL)(newR_m + ROUNDING) & MASK_M)) +
- (FIXP_SGL)((SHORT)(FIXP_SGL)(newR_e + NOISE_EXP_OFFSET) & MASK_E);
- h_data_left->sbrNoiseFloorLevel[i] = ((FIXP_SGL)((SHORT)(FIXP_SGL)(newL_m + ROUNDING) & MASK_M)) +
- (FIXP_SGL)((SHORT)(FIXP_SGL)(newL_e + NOISE_EXP_OFFSET) & MASK_E);
- }
-}
-
-
-/*!
- \brief Simple alternative to the real SBR concealment
-
- If the real frameInfo is not available due to a frame loss, a replacement will
- be constructed with 1 envelope spanning the whole frame (FIX-FIX).
- The delta-coded energies are set to negative values, resulting in a fade-down.
- In case of coupling, the balance-channel will move towards the center.
-*/
-static void
-leanSbrConcealment(HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_sbr_data, /*!< pointer to current data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data /*!< pointer to data of last frame */
- )
-{
- FIXP_SGL target; /* targeted level for sfb_nrg_prev during fade-down */
- FIXP_SGL step; /* speed of fade */
- int i;
-
- int currentStartPos = h_prev_data->stopPos - hHeaderData->numberTimeSlots;
- int currentStopPos = hHeaderData->numberTimeSlots;
-
-
- /* Use some settings of the previous frame */
- h_sbr_data->ampResolutionCurrentFrame = h_prev_data->ampRes;
- h_sbr_data->coupling = h_prev_data->coupling;
- for(i=0;i<MAX_INVF_BANDS;i++)
- h_sbr_data->sbr_invf_mode[i] = h_prev_data->sbr_invf_mode[i];
-
- /* Generate concealing control data */
-
- h_sbr_data->frameInfo.nEnvelopes = 1;
- h_sbr_data->frameInfo.borders[0] = currentStartPos;
- h_sbr_data->frameInfo.borders[1] = currentStopPos;
- h_sbr_data->frameInfo.freqRes[0] = 1;
- h_sbr_data->frameInfo.tranEnv = -1; /* no transient */
- h_sbr_data->frameInfo.nNoiseEnvelopes = 1;
- h_sbr_data->frameInfo.bordersNoise[0] = currentStartPos;
- h_sbr_data->frameInfo.bordersNoise[1] = currentStopPos;
-
- h_sbr_data->nScaleFactors = hHeaderData->freqBandData.nSfb[1];
-
- /* Generate fake envelope data */
-
- h_sbr_data->domain_vec[0] = 1;
-
- if (h_sbr_data->coupling == COUPLING_BAL) {
- target = (FIXP_SGL)SBR_ENERGY_PAN_OFFSET;
- step = (FIXP_SGL)DECAY_COUPLING;
- }
- else {
- target = FL2FXCONST_SGL(0.0f);
- step = (FIXP_SGL)DECAY;
- }
- if (hHeaderData->bs_info.ampResolution == 0) {
- target <<= 1;
- step <<= 1;
- }
-
- for (i=0; i < h_sbr_data->nScaleFactors; i++) {
- if (h_prev_data->sfb_nrg_prev[i] > target)
- h_sbr_data->iEnvelope[i] = -step;
- else
- h_sbr_data->iEnvelope[i] = step;
- }
-
- /* Noisefloor levels are always cleared ... */
-
- h_sbr_data->domain_vec_noise[0] = 1;
- for (i=0; i < hHeaderData->freqBandData.nNfb; i++)
- h_sbr_data->sbrNoiseFloorLevel[i] = FL2FXCONST_SGL(0.0f);
-
- /* ... and so are the sines */
- FDKmemclear(h_sbr_data->addHarmonics, MAX_FREQ_COEFFS);
-}
-
-
-/*!
- \brief Build reference energies and noise levels from bitstream elements
-*/
-static void
-decodeEnvelope (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_sbr_data, /*!< pointer to current data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data, /*!< pointer to data of last frame */
- HANDLE_SBR_PREV_FRAME_DATA otherChannel /*!< other channel's last frame data */
- )
-{
- int i;
- int fFrameError = hHeaderData->frameErrorFlag;
- FIXP_SGL tempSfbNrgPrev[MAX_FREQ_COEFFS];
-
- if (!fFrameError) {
- /*
- To avoid distortions after bad frames, set the error flag if delta coding in time occurs.
- However, SBR can take a little longer to come up again.
- */
- if ( h_prev_data->frameErrorFlag ) {
- if (h_sbr_data->domain_vec[0] != 0) {
- fFrameError = 1;
- }
- } else {
- /* Check that the previous stop position and the current start position match.
- (Could be done in checkFrameInfo(), but the previous frame data is not available there) */
- if ( h_sbr_data->frameInfo.borders[0] != h_prev_data->stopPos - hHeaderData->numberTimeSlots ) {
- /* Both the previous as well as the current frame are flagged to be ok, but they do not match! */
- if (h_sbr_data->domain_vec[0] == 1) {
- /* Prefer concealment over delta-time coding between the mismatching frames */
- fFrameError = 1;
- }
- else {
- /* Close the gap in time by triggering timeCompensateFirstEnvelope() */
- fFrameError = 1;
- }
- }
- }
- }
-
-
- if (fFrameError) /* Error is detected */
- {
- leanSbrConcealment(hHeaderData,
- h_sbr_data,
- h_prev_data);
-
- /* decode the envelope data to linear PCM */
- deltaToLinearPcmEnvelopeDecoding (hHeaderData, h_sbr_data, h_prev_data);
- }
- else /*Do a temporary dummy decoding and check that the envelope values are within limits */
- {
- if (h_prev_data->frameErrorFlag) {
- timeCompensateFirstEnvelope (hHeaderData, h_sbr_data, h_prev_data);
- if (h_sbr_data->coupling != h_prev_data->coupling) {
- /*
- Coupling mode has changed during concealment.
- The stored energy levels need to be converted.
- */
- for (i = 0; i < hHeaderData->freqBandData.nSfb[1]; i++) {
- /* Former Level-Channel will be used for both channels */
- if (h_prev_data->coupling == COUPLING_BAL)
- h_prev_data->sfb_nrg_prev[i] = otherChannel->sfb_nrg_prev[i];
- /* Former L/R will be combined as the new Level-Channel */
- else if (h_sbr_data->coupling == COUPLING_LEVEL)
- h_prev_data->sfb_nrg_prev[i] = (h_prev_data->sfb_nrg_prev[i] + otherChannel->sfb_nrg_prev[i]) >> 1;
- else if (h_sbr_data->coupling == COUPLING_BAL)
- h_prev_data->sfb_nrg_prev[i] = (FIXP_SGL)SBR_ENERGY_PAN_OFFSET;
- }
- }
- }
- FDKmemcpy (tempSfbNrgPrev, h_prev_data->sfb_nrg_prev,
- MAX_FREQ_COEFFS * sizeof (FIXP_SGL));
-
- deltaToLinearPcmEnvelopeDecoding (hHeaderData, h_sbr_data, h_prev_data);
-
- fFrameError = checkEnvelopeData (hHeaderData, h_sbr_data, h_prev_data);
-
- if (fFrameError)
- {
- hHeaderData->frameErrorFlag = 1;
- FDKmemcpy (h_prev_data->sfb_nrg_prev, tempSfbNrgPrev,
- MAX_FREQ_COEFFS * sizeof (FIXP_SGL));
- decodeEnvelope (hHeaderData, h_sbr_data, h_prev_data, otherChannel);
- return;
- }
- }
-
- requantizeEnvelopeData (h_sbr_data, h_sbr_data->ampResolutionCurrentFrame);
-
- hHeaderData->frameErrorFlag = fFrameError;
-}
-
-
-/*!
- \brief Verify that envelope energies are within the allowed range
- \return 0 if all is fine, 1 if an envelope value was too high
-*/
-static int
-checkEnvelopeData (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_sbr_data, /*!< pointer to current data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data /*!< pointer to data of last frame */
- )
-{
- FIXP_SGL *iEnvelope = h_sbr_data->iEnvelope;
- FIXP_SGL *sfb_nrg_prev = h_prev_data->sfb_nrg_prev;
- int i = 0, errorFlag = 0;
- FIXP_SGL sbr_max_energy =
- (h_sbr_data->ampResolutionCurrentFrame == 1) ? SBR_MAX_ENERGY : (SBR_MAX_ENERGY << 1);
-
- /*
- Range check for current energies
- */
- for (i = 0; i < h_sbr_data->nScaleFactors; i++) {
- if (iEnvelope[i] > sbr_max_energy) {
- errorFlag = 1;
- }
- if (iEnvelope[i] < FL2FXCONST_SGL(0.0f)) {
- errorFlag = 1;
- /* iEnvelope[i] = FL2FXCONST_SGL(0.0f); */
- }
- }
-
- /*
- Range check for previous energies
- */
- for (i = 0; i < hHeaderData->freqBandData.nSfb[1]; i++) {
- sfb_nrg_prev[i] = fixMax(sfb_nrg_prev[i], FL2FXCONST_SGL(0.0f));
- sfb_nrg_prev[i] = fixMin(sfb_nrg_prev[i], sbr_max_energy);
- }
-
- return (errorFlag);
-}
-
-
-/*!
- \brief Verify that the noise levels are within the allowed range
-
- The function is equivalent to checkEnvelopeData().
- When the noise-levels are being decoded, it is already too late for
- concealment. Therefore the noise levels are simply limited here.
-*/
-static void
-limitNoiseLevels(HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_sbr_data) /*!< pointer to current data */
-{
- int i;
- int nNfb = hHeaderData->freqBandData.nNfb;
-
- /*
- Set range limits. The exact values depend on the coupling mode.
- However this limitation is primarily intended to avoid unlimited
- accumulation of the delta-coded noise levels.
- */
- #define lowerLimit ((FIXP_SGL)0) /* lowerLimit actually refers to the _highest_ noise energy */
- #define upperLimit ((FIXP_SGL)35) /* upperLimit actually refers to the _lowest_ noise energy */
-
- /*
- Range check for current noise levels
- */
- for (i = 0; i < h_sbr_data->frameInfo.nNoiseEnvelopes * nNfb; i++) {
- h_sbr_data->sbrNoiseFloorLevel[i] = fixMin(h_sbr_data->sbrNoiseFloorLevel[i], upperLimit);
- h_sbr_data->sbrNoiseFloorLevel[i] = fixMax(h_sbr_data->sbrNoiseFloorLevel[i], lowerLimit);
- }
-}
-
-
-/*!
- \brief Compensate for the wrong timing that might occur after a frame error.
-*/
-static void
-timeCompensateFirstEnvelope (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_sbr_data, /*!< pointer to actual data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data) /*!< pointer to data of last frame */
-{
- int i, nScalefactors;
- FRAME_INFO *pFrameInfo = &h_sbr_data->frameInfo;
- UCHAR *nSfb = hHeaderData->freqBandData.nSfb;
- int estimatedStartPos = h_prev_data->stopPos - hHeaderData->numberTimeSlots;
- int refLen, newLen, shift;
- FIXP_SGL deltaExp;
-
- /* Original length of first envelope according to bitstream */
- refLen = pFrameInfo->borders[1] - pFrameInfo->borders[0];
- /* Corrected length of first envelope (concealing can make the first envelope longer) */
- newLen = pFrameInfo->borders[1] - estimatedStartPos;
-
- if (newLen <= 0) {
- /* An envelope length of <= 0 would not work, so we don't use it.
- May occur if the previous frame was flagged bad due to a mismatch
- of the old and new frame infos. */
- newLen = refLen;
- estimatedStartPos = pFrameInfo->borders[0];
- }
-
- deltaExp = FDK_getNumOctavesDiv8(newLen, refLen);
-
- /* Shift by -3 to rescale ld-table, ampRes-1 to enable coarser steps */
- shift = (FRACT_BITS - 1 - ENV_EXP_FRACT - 1 + h_sbr_data->ampResolutionCurrentFrame - 3);
- deltaExp = deltaExp >> shift;
- pFrameInfo->borders[0] = estimatedStartPos;
- pFrameInfo->bordersNoise[0] = estimatedStartPos;
-
- if (h_sbr_data->coupling != COUPLING_BAL) {
- nScalefactors = (pFrameInfo->freqRes[0]) ? nSfb[1] : nSfb[0];
-
- for (i = 0; i < nScalefactors; i++)
- h_sbr_data->iEnvelope[i] = h_sbr_data->iEnvelope[i] + deltaExp;
- }
-}
-
-
-
-/*!
- \brief Convert each envelope value from logarithmic to linear domain
-
- Energy levels are transmitted in powers of 2, i.e. only the exponent
- is extracted from the bitstream.
- Therefore, normally only integer exponents can occur. However during
- fading (in case of a corrupt bitstream), a fractional part can also
- occur. The data in the array iEnvelope is shifted left by ENV_EXP_FRACT
- compared to an integer representation so that numbers smaller than 1
- can be represented.
-
- This function calculates a mantissa corresponding to the fractional
- part of the exponent for each reference energy. The array iEnvelope
- is converted in place to save memory. Input and output data must
- be interpreted differently, as shown in the below figure:
-
- \image html EnvelopeData.png
-
- The data is then used in calculateSbrEnvelope().
-*/
-static void
-requantizeEnvelopeData (HANDLE_SBR_FRAME_DATA h_sbr_data, int ampResolution)
-{
- int i;
- FIXP_SGL mantissa;
- int ampShift = 1 - ampResolution;
- int exponent;
-
- /* In case that ENV_EXP_FRACT is changed to something else but 0 or 8,
- the initialization of this array has to be adapted!
- */
-#if ENV_EXP_FRACT
- static const FIXP_SGL pow2[ENV_EXP_FRACT] =
- {
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 1))), /* 0.7071 */
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 2))), /* 0.5946 */
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 3))),
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 4))),
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 5))),
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 6))),
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 7))),
- FL2FXCONST_SGL(0.5f * pow(2.0f, pow(0.5f, 8))) /* 0.5013 */
- };
-
- int bit, mask;
-#endif
-
- for (i = 0; i < h_sbr_data->nScaleFactors; i++) {
- exponent = (LONG)h_sbr_data->iEnvelope[i];
-
-#if ENV_EXP_FRACT
-
- exponent = exponent >> ampShift;
- mantissa = 0.5f;
-
- /* Amplify mantissa according to the fractional part of the
- exponent (result will be between 0.500000 and 0.999999)
- */
- mask = 1; /* begin with lowest bit of exponent */
-
- for ( bit=ENV_EXP_FRACT-1; bit>=0; bit-- ) {
- if (exponent & mask) {
- /* The current bit of the exponent is set,
- multiply mantissa with the corresponding factor: */
- mantissa = (FIXP_SGL)( (mantissa * pow2[bit]) << 1);
- }
- /* Advance to next bit */
- mask = mask << 1;
- }
-
- /* Make integer part of exponent right aligned */
- exponent = exponent >> ENV_EXP_FRACT;
-
-#else
- /* In case of the high amplitude resolution, 1 bit of the exponent gets lost by the shift.
- This will be compensated by a mantissa of 0.5*sqrt(2) instead of 0.5 if that bit is 1. */
- mantissa = (exponent & ampShift) ? FL2FXCONST_SGL(0.707106781186548f) : FL2FXCONST_SGL(0.5f);
- exponent = exponent >> ampShift;
-#endif
-
- /*
- Mantissa was set to 0.5 (instead of 1.0, therefore increase exponent by 1).
- Multiply by L=nChannels=64 by increasing exponent by another 6.
- => Increase exponent by 7
- */
- exponent += 7 + NRG_EXP_OFFSET;
-
- /* Combine mantissa and exponent and write back the result */
- h_sbr_data->iEnvelope[i] = (FIXP_SGL)(((LONG)mantissa & MASK_M) | (exponent & MASK_E));
-
- }
-}
-
-
-/*!
- \brief Build new reference energies from old ones and delta coded data
-*/
-static void
-deltaToLinearPcmEnvelopeDecoding (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_sbr_data, /*!< pointer to current data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data) /*!< pointer to previous data */
-{
- int i, domain, no_of_bands, band, freqRes;
-
- FIXP_SGL *sfb_nrg_prev = h_prev_data->sfb_nrg_prev;
- FIXP_SGL *ptr_nrg = h_sbr_data->iEnvelope;
-
- int offset = 2 * hHeaderData->freqBandData.nSfb[0] - hHeaderData->freqBandData.nSfb[1];
-
- for (i = 0; i < h_sbr_data->frameInfo.nEnvelopes; i++) {
- domain = h_sbr_data->domain_vec[i];
- freqRes = h_sbr_data->frameInfo.freqRes[i];
-
- FDK_ASSERT(freqRes >= 0 && freqRes <= 1);
-
- no_of_bands = hHeaderData->freqBandData.nSfb[freqRes];
-
- FDK_ASSERT(no_of_bands < (64));
-
- if (domain == 0)
- {
- mapLowResEnergyVal(*ptr_nrg, sfb_nrg_prev, offset, 0, freqRes);
- ptr_nrg++;
- for (band = 1; band < no_of_bands; band++)
- {
- *ptr_nrg = *ptr_nrg + *(ptr_nrg-1);
- mapLowResEnergyVal(*ptr_nrg, sfb_nrg_prev, offset, band, freqRes);
- ptr_nrg++;
- }
- }
- else
- {
- for (band = 0; band < no_of_bands; band++)
- {
- *ptr_nrg = *ptr_nrg + sfb_nrg_prev[indexLow2High(offset, band, freqRes)];
- mapLowResEnergyVal(*ptr_nrg, sfb_nrg_prev, offset, band, freqRes);
- ptr_nrg++;
- }
- }
- }
-}
-
-
-/*!
- \brief Build new noise levels from old ones and delta coded data
-*/
-static void
-decodeNoiseFloorlevels (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_sbr_data, /*!< pointer to current data */
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data) /*!< pointer to previous data */
-{
- int i;
- int nNfb = hHeaderData->freqBandData.nNfb;
- int nNoiseFloorEnvelopes = h_sbr_data->frameInfo.nNoiseEnvelopes;
-
- /* Decode first noise envelope */
-
- if (h_sbr_data->domain_vec_noise[0] == 0) {
- FIXP_SGL noiseLevel = h_sbr_data->sbrNoiseFloorLevel[0];
- for (i = 1; i < nNfb; i++) {
- noiseLevel += h_sbr_data->sbrNoiseFloorLevel[i];
- h_sbr_data->sbrNoiseFloorLevel[i] = noiseLevel;
- }
- }
- else {
- for (i = 0; i < nNfb; i++) {
- h_sbr_data->sbrNoiseFloorLevel[i] += h_prev_data->prevNoiseLevel[i];
- }
- }
-
- /* If present, decode the second noise envelope
- Note: nNoiseFloorEnvelopes can only be 1 or 2 */
-
- if (nNoiseFloorEnvelopes > 1) {
- if (h_sbr_data->domain_vec_noise[1] == 0) {
- FIXP_SGL noiseLevel = h_sbr_data->sbrNoiseFloorLevel[nNfb];
- for (i = nNfb + 1; i < 2*nNfb; i++) {
- noiseLevel += h_sbr_data->sbrNoiseFloorLevel[i];
- h_sbr_data->sbrNoiseFloorLevel[i] = noiseLevel;
- }
- }
- else {
- for (i = 0; i < nNfb; i++) {
- h_sbr_data->sbrNoiseFloorLevel[i + nNfb] += h_sbr_data->sbrNoiseFloorLevel[i];
- }
- }
- }
-
- limitNoiseLevels(hHeaderData, h_sbr_data);
-
- /* Update prevNoiseLevel with the last noise envelope */
- for (i = 0; i < nNfb; i++)
- h_prev_data->prevNoiseLevel[i] = h_sbr_data->sbrNoiseFloorLevel[i + nNfb*(nNoiseFloorEnvelopes-1)];
-
-
- /* Requantize the noise floor levels in COUPLING_OFF-mode */
- if (!h_sbr_data->coupling) {
- int nf_e;
-
- for (i = 0; i < nNoiseFloorEnvelopes*nNfb; i++) {
- nf_e = 6 - (LONG)h_sbr_data->sbrNoiseFloorLevel[i] + 1 + NOISE_EXP_OFFSET;
- /* +1 to compensate for a mantissa of 0.5 instead of 1.0 */
-
- h_sbr_data->sbrNoiseFloorLevel[i] =
- (FIXP_SGL)( ((LONG)FL2FXCONST_SGL(0.5f)) + /* mantissa */
- (nf_e & MASK_E) ); /* exponent */
-
- }
- }
-}
diff --git a/libSBRdec/src/env_dec.h b/libSBRdec/src/env_dec.h
deleted file mode 100644
index 6f6dae3..0000000
--- a/libSBRdec/src/env_dec.h
+++ /dev/null
@@ -1,101 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Envelope decoding
-*/
-#ifndef __ENV_DEC_H
-#define __ENV_DEC_H
-
-#include "sbrdecoder.h"
-#include "env_extr.h"
-
-void decodeSbrData (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_data_left,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data_left,
- HANDLE_SBR_FRAME_DATA h_data_right,
- HANDLE_SBR_PREV_FRAME_DATA h_prev_data_right);
-
-
-#endif
diff --git a/libSBRdec/src/env_extr.cpp b/libSBRdec/src/env_extr.cpp
deleted file mode 100644
index 6cb0b99..0000000
--- a/libSBRdec/src/env_extr.cpp
+++ /dev/null
@@ -1,1395 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Envelope extraction
- The functions provided by this module are mostly called by applySBR(). After it is
- determined that there is valid SBR data, sbrGetHeaderData() might be called if the current
- SBR data contains an \ref SBR_HEADER_ELEMENT as opposed to a \ref SBR_STANDARD_ELEMENT. This function
- may return various error codes as defined in #SBR_HEADER_STATUS . Most importantly it returns HEADER_RESET when decoder
- settings need to be recalculated according to the SBR specifications. In that case applySBR()
- will initiatite the required re-configuration.
-
- The header data is stored in a #SBR_HEADER_DATA structure.
-
- The actual SBR data for the current frame is decoded into SBR_FRAME_DATA stuctures by sbrGetChannelPairElement()
- [for stereo streams] and sbrGetSingleChannelElement() [for mono streams]. There is no fractional arithmetic involved.
-
- Once the information is extracted, the data needs to be further prepared before the actual decoding process.
- This is done in decodeSbrData().
-
- \sa Description of buffer management in applySBR(). \ref documentationOverview
-
- <h1>About the SBR data format:</h1>
-
- Each frame includes SBR data (side chain information), and can be either the \ref SBR_HEADER_ELEMENT or the \ref SBR_STANDARD_ELEMENT.
- Parts of the data can be protected by a CRC checksum.
-
- \anchor SBR_HEADER_ELEMENT <h2>The SBR_HEADER_ELEMENT</h2>
-
- The SBR_HEADER_ELEMENT can be transmitted with every frame, however, it typically is send every second or so. It contains fundamental
- information such as SBR sampling frequency and frequency range as well as control signals that do not require frequent changes. It also
- includes the \ref SBR_STANDARD_ELEMENT.
-
- Depending on the changes between the information in a current SBR_HEADER_ELEMENT and the previous SBR_HEADER_ELEMENT, the SBR decoder might need
- to be reset and reconfigured (e.g. new tables need to be calculated).
-
- \anchor SBR_STANDARD_ELEMENT <h2>The SBR_STANDARD_ELEMENT</h2>
-
- This data can be subdivided into "side info" and "raw data", where side info is defined as signals needed to decode the raw data
- and some decoder tuning signals. Raw data is referred to as PCM and Huffman coded envelope and noise floor estimates. The side info also
- includes information about the time-frequency grid for the current frame.
-
- \sa \ref documentationOverview
-*/
-
-#include "env_extr.h"
-
-#include "sbr_ram.h"
-#include "sbr_rom.h"
-#include "huff_dec.h"
-
-
-#include "psbitdec.h"
-
-#define DRM_PARAMETRIC_STEREO 0
-#define EXTENSION_ID_PS_CODING 2
-
-
-static int extractFrameInfo (HANDLE_FDK_BITSTREAM hBs,
- HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_frame_data,
- const UINT nrOfChannels,
- const UINT flags
- );
-
-
-static int sbrGetEnvelope (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_frame_data,
- HANDLE_FDK_BITSTREAM hBs,
- const UINT flags);
-
-static void sbrGetDirectionControlData (HANDLE_SBR_FRAME_DATA hFrameData,
- HANDLE_FDK_BITSTREAM hBs);
-
-static void sbrGetNoiseFloorData (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_frame_data,
- HANDLE_FDK_BITSTREAM hBs);
-
-static int checkFrameInfo (FRAME_INFO *pFrameInfo, int numberOfTimeSlots, int overlap, int timeStep);
-
-SBR_ERROR
-initHeaderData (
- HANDLE_SBR_HEADER_DATA hHeaderData,
- const int sampleRateIn,
- const int sampleRateOut,
- const int samplesPerFrame,
- const UINT flags
- )
-{
- HANDLE_FREQ_BAND_DATA hFreq = &hHeaderData->freqBandData;
- SBR_ERROR sbrError = SBRDEC_OK;
- int numAnalysisBands;
-
- if ( sampleRateIn == sampleRateOut ) {
- hHeaderData->sbrProcSmplRate = sampleRateOut<<1;
- numAnalysisBands = 32;
- } else {
- hHeaderData->sbrProcSmplRate = sampleRateOut;
- if ( (sampleRateOut>>1) == sampleRateIn) {
- /* 1:2 */
- numAnalysisBands = 32;
- } else if ( (sampleRateOut>>2) == sampleRateIn ) {
- /* 1:4 */
- numAnalysisBands = 32;
- } else if ( (sampleRateOut*3)>>3 == (sampleRateIn*8)>>3 ) {
- /* 3:8, 3/4 core frame length */
- numAnalysisBands = 24;
- } else {
- sbrError = SBRDEC_UNSUPPORTED_CONFIG;
- goto bail;
- }
- }
-
- /* Fill in default values first */
- hHeaderData->syncState = SBR_NOT_INITIALIZED;
- hHeaderData->status = 0;
- hHeaderData->frameErrorFlag = 0;
-
- hHeaderData->bs_info.ampResolution = 1;
- hHeaderData->bs_info.xover_band = 0;
- hHeaderData->bs_info.sbr_preprocessing = 0;
-
- hHeaderData->bs_data.startFreq = 5;
- hHeaderData->bs_data.stopFreq = 0;
- hHeaderData->bs_data.freqScale = 2;
- hHeaderData->bs_data.alterScale = 1;
- hHeaderData->bs_data.noise_bands = 2;
- hHeaderData->bs_data.limiterBands = 2;
- hHeaderData->bs_data.limiterGains = 2;
- hHeaderData->bs_data.interpolFreq = 1;
- hHeaderData->bs_data.smoothingLength = 1;
-
- hHeaderData->timeStep = (flags & SBRDEC_ELD_GRID) ? 1 : 2;
-
- /* Setup pointers to frequency band tables */
- hFreq->freqBandTable[0] = hFreq->freqBandTableLo;
- hFreq->freqBandTable[1] = hFreq->freqBandTableHi;
-
- /* Patch some entries */
- if (sampleRateOut > 24000) { /* Trigger an error if SBR is going to be processed without */
- hHeaderData->bs_data.startFreq = 7; /* having read these frequency values from bit stream before. */
- hHeaderData->bs_data.stopFreq = 3;
- }
-
- /* One SBR timeslot corresponds to the amount of samples equal to the amount of analysis bands, divided by the timestep. */
- hHeaderData->numberTimeSlots = (samplesPerFrame/numAnalysisBands) >> (hHeaderData->timeStep - 1);
- if (hHeaderData->numberTimeSlots > (16)) {
- sbrError = SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- hHeaderData->numberOfAnalysisBands = numAnalysisBands;
-
-bail:
- return sbrError;
-}
-
-
-/*!
- \brief Initialize the SBR_PREV_FRAME_DATA struct
-*/
-void
-initSbrPrevFrameData (HANDLE_SBR_PREV_FRAME_DATA h_prev_data, /*!< handle to struct SBR_PREV_FRAME_DATA */
- int timeSlots) /*!< Framelength in SBR-timeslots */
-{
- int i;
-
- /* Set previous energy and noise levels to 0 for the case
- that decoding starts in the middle of a bitstream */
- for (i=0; i < MAX_FREQ_COEFFS; i++)
- h_prev_data->sfb_nrg_prev[i] = (FIXP_DBL)0;
- for (i=0; i < MAX_NOISE_COEFFS; i++)
- h_prev_data->prevNoiseLevel[i] = (FIXP_DBL)0;
- for (i=0; i < MAX_INVF_BANDS; i++)
- h_prev_data->sbr_invf_mode[i] = INVF_OFF;
-
- h_prev_data->stopPos = timeSlots;
- h_prev_data->coupling = COUPLING_OFF;
- h_prev_data->ampRes = 0;
-}
-
-
-/*!
- \brief Read header data from bitstream
-
- \return error status - 0 if ok
-*/
-SBR_HEADER_STATUS
-sbrGetHeaderData (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_FDK_BITSTREAM hBs,
- const UINT flags,
- const int fIsSbrData)
-{
- SBR_HEADER_DATA_BS *pBsData;
- SBR_HEADER_DATA_BS lastHeader;
- SBR_HEADER_DATA_BS_INFO lastInfo;
- int headerExtra1=0, headerExtra2=0;
-
- /* Copy SBR bit stream header to temporary header */
- lastHeader = hHeaderData->bs_data;
- lastInfo = hHeaderData->bs_info;
-
- /* Read new header from bitstream */
- {
- pBsData = &hHeaderData->bs_data;
- }
-
- {
- hHeaderData->bs_info.ampResolution = FDKreadBits (hBs, 1);
- }
-
- pBsData->startFreq = FDKreadBits (hBs, 4);
- pBsData->stopFreq = FDKreadBits (hBs, 4);
-
- {
- hHeaderData->bs_info.xover_band = FDKreadBits (hBs, 3);
- FDKreadBits (hBs, 2);
- }
-
- headerExtra1 = FDKreadBits (hBs, 1);
- headerExtra2 = FDKreadBits (hBs, 1);
-
- /* Handle extra header information */
- if( headerExtra1)
- {
- pBsData->freqScale = FDKreadBits (hBs, 2);
- pBsData->alterScale = FDKreadBits (hBs, 1);
- pBsData->noise_bands = FDKreadBits (hBs, 2);
- }
- else {
- pBsData->freqScale = 2;
- pBsData->alterScale = 1;
- pBsData->noise_bands = 2;
- }
-
- if (headerExtra2) {
- pBsData->limiterBands = FDKreadBits (hBs, 2);
- pBsData->limiterGains = FDKreadBits (hBs, 2);
- pBsData->interpolFreq = FDKreadBits (hBs, 1);
- pBsData->smoothingLength = FDKreadBits (hBs, 1);
- }
- else {
- pBsData->limiterBands = 2;
- pBsData->limiterGains = 2;
- pBsData->interpolFreq = 1;
- pBsData->smoothingLength = 1;
- }
-
- /* Look for new settings. IEC 14496-3, 4.6.18.3.1 */
- if(hHeaderData->syncState != SBR_ACTIVE ||
- lastHeader.startFreq != pBsData->startFreq ||
- lastHeader.stopFreq != pBsData->stopFreq ||
- lastHeader.freqScale != pBsData->freqScale ||
- lastHeader.alterScale != pBsData->alterScale ||
- lastHeader.noise_bands != pBsData->noise_bands ||
- lastInfo.xover_band != hHeaderData->bs_info.xover_band) {
- return HEADER_RESET; /* New settings */
- }
-
- return HEADER_OK;
-}
-
-/*!
- \brief Get missing harmonics parameters (only used for AAC+SBR)
-
- \return error status - 0 if ok
-*/
-int
-sbrGetSyntheticCodedData(HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA hFrameData,
- HANDLE_FDK_BITSTREAM hBs)
-{
- int i, bitsRead = 0;
-
- int flag = FDKreadBits(hBs,1);
- bitsRead++;
-
- if(flag){
- for(i=0;i<hHeaderData->freqBandData.nSfb[1];i++){
- hFrameData->addHarmonics[i] = FDKreadBits (hBs, 1 );
- bitsRead++;
- }
- }
- else {
- for(i=0; i<MAX_FREQ_COEFFS; i++)
- hFrameData->addHarmonics[i] = 0;
- }
- return(bitsRead);
-}
-
-/*!
- \brief Reads extension data from the bitstream
-
- The bitstream format allows up to 4 kinds of extended data element.
- Extended data may contain several elements, each identified by a 2-bit-ID.
- So far, no extended data elements are defined hence the first 2 parameters
- are unused. The data should be skipped in order to update the number
- of read bits for the consistency check in applySBR().
-*/
-static int extractExtendedData(
- HANDLE_SBR_HEADER_DATA hHeaderData, /*!< handle to SBR header */
- HANDLE_FDK_BITSTREAM hBs /*!< Handle to the bit buffer */
- ,HANDLE_PS_DEC hParametricStereoDec /*!< Parametric Stereo Decoder */
- ) {
- INT nBitsLeft;
- int extended_data;
- int i, frameOk = 1;
-
-
- extended_data = FDKreadBits(hBs, 1);
-
- if (extended_data) {
- int cnt;
- int bPsRead = 0;
-
- cnt = FDKreadBits(hBs, 4);
- if (cnt == (1<<4)-1)
- cnt += FDKreadBits(hBs, 8);
-
-
- nBitsLeft = 8 * cnt;
-
- /* sanity check for cnt */
- if (nBitsLeft > (INT)FDKgetValidBits(hBs)) {
- /* limit nBitsLeft */
- nBitsLeft = (INT)FDKgetValidBits(hBs);
- /* set frame error */
- frameOk = 0;
- }
-
- while (nBitsLeft > 7) {
- int extension_id = FDKreadBits(hBs, 2);
- nBitsLeft -= 2;
-
- switch(extension_id) {
-
-
-
- case EXTENSION_ID_PS_CODING:
-
- /* Read PS data from bitstream */
-
- if (hParametricStereoDec != NULL) {
- if(bPsRead && !hParametricStereoDec->bsData[hParametricStereoDec->bsReadSlot].mpeg.bPsHeaderValid) {
- cnt = nBitsLeft >> 3; /* number of remaining bytes */
- for (i=0; i<cnt; i++)
- FDKreadBits(hBs, 8);
- nBitsLeft -= cnt * 8;
- } else {
- nBitsLeft -= ReadPsData(hParametricStereoDec, hBs, nBitsLeft);
- bPsRead = 1;
- }
- }
-
- /* parametric stereo detected, could set channelMode accordingly here */
- /* */
- /* "The usage of this parametric stereo extension to HE-AAC is */
- /* signalled implicitly in the bitstream. Hence, if an sbr_extension() */
- /* with bs_extension_id==EXTENSION_ID_PS is found in the SBR part of */
- /* the bitstream, a decoder supporting the combination of SBR and PS */
- /* shall operate the PS tool to generate a stereo output signal." */
- /* source: ISO/IEC 14496-3:2001/FDAM 2:2004(E) */
-
- break;
-
-
- default:
- cnt = nBitsLeft >> 3; /* number of remaining bytes */
- for (i=0; i<cnt; i++)
- FDKreadBits(hBs, 8);
- nBitsLeft -= cnt * 8;
- break;
- }
- }
-
- if (nBitsLeft < 0) {
- frameOk = 0;
- goto bail;
- }
- else {
- /* Read fill bits for byte alignment */
- FDKreadBits(hBs, nBitsLeft);
- }
- }
-
-bail:
- return (frameOk);
-}
-
-
-/*!
- \brief Read bitstream elements of one channel
-
- \return SbrFrameOK: 1=ok, 0=error
-*/
-int
-sbrGetSingleChannelElement (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA hFrameData, /*!< Control data of current frame */
- HANDLE_FDK_BITSTREAM hBs, /*!< Handle to struct BIT_BUF */
- HANDLE_PS_DEC hParametricStereoDec, /*!< Handle to PS decoder */
- const UINT flags,
- const int overlap
- )
-{
- int i;
-
-
- hFrameData->coupling = COUPLING_OFF;
-
- {
- /* Reserved bits */
- if (FDKreadBits(hBs, 1)) { /* bs_data_extra */
- FDKreadBits(hBs, 4);
- if (flags & SBRDEC_SYNTAX_SCAL) {
- FDKreadBits(hBs, 4);
- }
- }
- }
-
- if (flags & SBRDEC_SYNTAX_SCAL) {
- FDKreadBits (hBs, 1); /* bs_coupling */
- }
-
- /*
- Grid control
- */
- if ( !extractFrameInfo ( hBs, hHeaderData, hFrameData, 1, flags) )
- return 0;
-
- if ( !checkFrameInfo (&hFrameData->frameInfo, hHeaderData->numberTimeSlots, overlap, hHeaderData->timeStep) )
- return 0;
-
-
- /*
- Fetch domain vectors (time or frequency direction for delta-coding)
- */
- sbrGetDirectionControlData (hFrameData, hBs);
-
- for (i=0; i<hHeaderData->freqBandData.nInvfBands; i++) {
- hFrameData->sbr_invf_mode[i] =
- (INVF_MODE) FDKreadBits (hBs, 2);
- }
-
-
-
- /* raw data */
- if ( !sbrGetEnvelope (hHeaderData, hFrameData, hBs, flags) )
- return 0;
-
-
- sbrGetNoiseFloorData (hHeaderData, hFrameData, hBs);
-
- sbrGetSyntheticCodedData(hHeaderData, hFrameData, hBs);
-
- {
- /* sbr extended data */
- if (! extractExtendedData(
- hHeaderData,
- hBs
- ,hParametricStereoDec
- )) {
- return 0;
- }
- }
-
- return 1;
-}
-
-
-
-/*!
- \brief Read bitstream elements of a channel pair
- \return SbrFrameOK
-*/
-int
-sbrGetChannelPairElement (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA hFrameDataLeft, /*!< Dynamic control data for first channel */
- HANDLE_SBR_FRAME_DATA hFrameDataRight,/*!< Dynamic control data for second channel */
- HANDLE_FDK_BITSTREAM hBs, /*!< handle to struct BIT_BUF */
- const UINT flags,
- const int overlap )
-{
- int i, bit;
-
-
- /* Reserved bits */
- if (FDKreadBits(hBs, 1)) { /* bs_data_extra */
- FDKreadBits(hBs, 4);
- FDKreadBits(hBs, 4);
- }
-
- /* Read coupling flag */
- bit = FDKreadBits (hBs, 1);
-
- if (bit) {
- hFrameDataLeft->coupling = COUPLING_LEVEL;
- hFrameDataRight->coupling = COUPLING_BAL;
- }
- else {
- hFrameDataLeft->coupling = COUPLING_OFF;
- hFrameDataRight->coupling = COUPLING_OFF;
- }
-
-
- /*
- Grid control
- */
- if ( !extractFrameInfo (hBs, hHeaderData, hFrameDataLeft, 2, flags) )
- return 0;
-
- if ( !checkFrameInfo (&hFrameDataLeft->frameInfo, hHeaderData->numberTimeSlots, overlap, hHeaderData->timeStep) )
- return 0;
-
- if (hFrameDataLeft->coupling) {
- FDKmemcpy (&hFrameDataRight->frameInfo, &hFrameDataLeft->frameInfo, sizeof(FRAME_INFO));
- hFrameDataRight->ampResolutionCurrentFrame = hFrameDataLeft->ampResolutionCurrentFrame;
- }
- else {
- if ( !extractFrameInfo (hBs, hHeaderData, hFrameDataRight, 2, flags) )
- return 0;
-
- if ( !checkFrameInfo (&hFrameDataRight->frameInfo, hHeaderData->numberTimeSlots, overlap, hHeaderData->timeStep) )
- return 0;
- }
-
- /*
- Fetch domain vectors (time or frequency direction for delta-coding)
- */
- sbrGetDirectionControlData (hFrameDataLeft, hBs);
- sbrGetDirectionControlData (hFrameDataRight, hBs);
-
- for (i=0; i<hHeaderData->freqBandData.nInvfBands; i++) {
- hFrameDataLeft->sbr_invf_mode[i] = (INVF_MODE) FDKreadBits (hBs, 2);
- }
-
- if (hFrameDataLeft->coupling) {
- for (i=0; i<hHeaderData->freqBandData.nInvfBands; i++) {
- hFrameDataRight->sbr_invf_mode[i] = hFrameDataLeft->sbr_invf_mode[i];
- }
-
-
- if ( !sbrGetEnvelope (hHeaderData, hFrameDataLeft, hBs, flags) ) {
- return 0;
- }
-
- sbrGetNoiseFloorData (hHeaderData, hFrameDataLeft, hBs);
-
- if ( !sbrGetEnvelope (hHeaderData, hFrameDataRight, hBs, flags) ) {
- return 0;
- }
- }
- else {
-
- for (i=0; i<hHeaderData->freqBandData.nInvfBands; i++) {
- hFrameDataRight->sbr_invf_mode[i] = (INVF_MODE) FDKreadBits (hBs, 2);
- }
-
-
-
- if ( !sbrGetEnvelope (hHeaderData, hFrameDataLeft, hBs, flags) )
- return 0;
-
- if ( !sbrGetEnvelope (hHeaderData, hFrameDataRight, hBs, flags) )
- return 0;
-
- sbrGetNoiseFloorData (hHeaderData, hFrameDataLeft, hBs);
-
- }
- sbrGetNoiseFloorData (hHeaderData, hFrameDataRight, hBs);
-
- sbrGetSyntheticCodedData(hHeaderData, hFrameDataLeft, hBs);
- sbrGetSyntheticCodedData(hHeaderData, hFrameDataRight, hBs);
-
- {
- if (! extractExtendedData(
- hHeaderData,
- hBs
- ,NULL
- ) ) {
- return 0;
- }
- }
-
- return 1;
-}
-
-
-
-
-/*!
- \brief Read direction control data from bitstream
-*/
-void
-sbrGetDirectionControlData (HANDLE_SBR_FRAME_DATA h_frame_data, /*!< handle to struct SBR_FRAME_DATA */
- HANDLE_FDK_BITSTREAM hBs) /*!< handle to struct BIT_BUF */
-{
- int i;
-
- for (i = 0; i < h_frame_data->frameInfo.nEnvelopes; i++) {
- h_frame_data->domain_vec[i] = FDKreadBits (hBs, 1);
- }
-
- for (i = 0; i < h_frame_data->frameInfo.nNoiseEnvelopes; i++) {
- h_frame_data->domain_vec_noise[i] = FDKreadBits (hBs, 1);
- }
-}
-
-
-
-/*!
- \brief Read noise-floor-level data from bitstream
-*/
-void
-sbrGetNoiseFloorData (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_frame_data, /*!< handle to struct SBR_FRAME_DATA */
- HANDLE_FDK_BITSTREAM hBs) /*!< handle to struct BIT_BUF */
-{
- int i,j;
- int delta;
- COUPLING_MODE coupling;
- int noNoiseBands = hHeaderData->freqBandData.nNfb;
-
- Huffman hcb_noiseF;
- Huffman hcb_noise;
- int envDataTableCompFactor;
-
- coupling = h_frame_data->coupling;
-
-
- /*
- Select huffman codebook depending on coupling mode
- */
- if (coupling == COUPLING_BAL) {
- hcb_noise = (Huffman)&FDK_sbrDecoder_sbr_huffBook_NoiseBalance11T;
- hcb_noiseF = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvBalance11F; /* "sbr_huffBook_NoiseBalance11F" */
- envDataTableCompFactor = 1;
- }
- else {
- hcb_noise = (Huffman)&FDK_sbrDecoder_sbr_huffBook_NoiseLevel11T;
- hcb_noiseF = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvLevel11F; /* "sbr_huffBook_NoiseLevel11F" */
- envDataTableCompFactor = 0;
- }
-
- /*
- Read raw noise-envelope data
- */
- for (i=0; i<h_frame_data->frameInfo.nNoiseEnvelopes; i++) {
-
-
- if (h_frame_data->domain_vec_noise[i] == 0) {
- if (coupling == COUPLING_BAL) {
- h_frame_data->sbrNoiseFloorLevel[i*noNoiseBands] =
- (FIXP_SGL) (((int)FDKreadBits (hBs, 5)) << envDataTableCompFactor);
- }
- else {
- h_frame_data->sbrNoiseFloorLevel[i*noNoiseBands] =
- (FIXP_SGL) (int)FDKreadBits (hBs, 5);
- }
-
- for (j = 1; j < noNoiseBands; j++) {
- delta = DecodeHuffmanCW(hcb_noiseF, hBs);
- h_frame_data->sbrNoiseFloorLevel[i*noNoiseBands+j] = (FIXP_SGL) (delta << envDataTableCompFactor);
- }
- }
- else {
- for (j = 0; j < noNoiseBands; j++) {
- delta = DecodeHuffmanCW(hcb_noise, hBs);
- h_frame_data->sbrNoiseFloorLevel[i*noNoiseBands+j] = (FIXP_SGL) (delta << envDataTableCompFactor);
- }
- }
- }
-}
-
-
-/*!
- \brief Read envelope data from bitstream
-*/
-static int
-sbrGetEnvelope (HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_frame_data, /*!< handle to struct SBR_FRAME_DATA */
- HANDLE_FDK_BITSTREAM hBs, /*!< handle to struct BIT_BUF */
- const UINT flags)
-{
- int i, j;
- UCHAR no_band[MAX_ENVELOPES];
- int delta = 0;
- int offset = 0;
- COUPLING_MODE coupling = h_frame_data->coupling;
- int ampRes = hHeaderData->bs_info.ampResolution;
- int nEnvelopes = h_frame_data->frameInfo.nEnvelopes;
- int envDataTableCompFactor;
- int start_bits, start_bits_balance;
- Huffman hcb_t, hcb_f;
-
- h_frame_data->nScaleFactors = 0;
-
- if ( (h_frame_data->frameInfo.frameClass == 0) && (nEnvelopes == 1) ) {
- if (flags & SBRDEC_ELD_GRID)
- ampRes = h_frame_data->ampResolutionCurrentFrame;
- else
- ampRes = 0;
- }
- h_frame_data->ampResolutionCurrentFrame = ampRes;
-
- /*
- Set number of bits for first value depending on amplitude resolution
- */
- if(ampRes == 1)
- {
- start_bits = 6;
- start_bits_balance = 5;
- }
- else
- {
- start_bits = 7;
- start_bits_balance = 6;
- }
-
- /*
- Calculate number of values for each envelope and alltogether
- */
- for (i = 0; i < nEnvelopes; i++) {
- no_band[i] = hHeaderData->freqBandData.nSfb[h_frame_data->frameInfo.freqRes[i]];
- h_frame_data->nScaleFactors += no_band[i];
- }
- if (h_frame_data->nScaleFactors > MAX_NUM_ENVELOPE_VALUES)
- return 0;
-
- /*
- Select Huffman codebook depending on coupling mode and amplitude resolution
- */
- if (coupling == COUPLING_BAL) {
- envDataTableCompFactor = 1;
- if (ampRes == 0) {
- hcb_t = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvBalance10T;
- hcb_f = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvBalance10F;
- }
- else {
- hcb_t = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvBalance11T;
- hcb_f = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvBalance11F;
- }
- }
- else {
- envDataTableCompFactor = 0;
- if (ampRes == 0) {
- hcb_t = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvLevel10T;
- hcb_f = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvLevel10F;
- }
- else {
- hcb_t = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvLevel11T;
- hcb_f = (Huffman)&FDK_sbrDecoder_sbr_huffBook_EnvLevel11F;
- }
- }
-
- /*
- Now read raw envelope data
- */
- for (j = 0, offset = 0; j < nEnvelopes; j++) {
-
-
- if (h_frame_data->domain_vec[j] == 0) {
- if (coupling == COUPLING_BAL) {
- h_frame_data->iEnvelope[offset] =
- (FIXP_SGL) (( (int)FDKreadBits(hBs, start_bits_balance)) << envDataTableCompFactor);
- }
- else {
- h_frame_data->iEnvelope[offset] =
- (FIXP_SGL) (int)FDKreadBits (hBs, start_bits);
- }
- }
-
- for (i = (1 - h_frame_data->domain_vec[j]); i < no_band[j]; i++) {
-
- if (h_frame_data->domain_vec[j] == 0) {
- delta = DecodeHuffmanCW(hcb_f, hBs);
- }
- else {
- delta = DecodeHuffmanCW(hcb_t, hBs);
- }
-
- h_frame_data->iEnvelope[offset + i] = (FIXP_SGL) (delta << envDataTableCompFactor);
- }
- offset += no_band[j];
- }
-
-#if ENV_EXP_FRACT
- /* Convert from int to scaled fract (ENV_EXP_FRACT bits for the fractional part) */
- for (i = 0; i < h_frame_data->nScaleFactors; i++) {
- h_frame_data->iEnvelope[i] <<= ENV_EXP_FRACT;
- }
-#endif
-
- return 1;
-}
-
-
-//static const FRAME_INFO v_frame_info1_8 = { 0, 1, {0, 8}, {1}, -1, 1, {0, 8} };
-static const FRAME_INFO v_frame_info2_8 = { 0, 2, {0, 4, 8}, {1, 1}, -1, 2, {0, 4, 8} };
-static const FRAME_INFO v_frame_info4_8 = { 0, 4, {0, 2, 4, 6, 8}, {1, 1, 1, 1}, -1, 2, {0, 4, 8} };
-
-/***************************************************************************/
-/*!
- \brief Generates frame info for FIXFIXonly frame class used for low delay version
-
- \return nothing
- ****************************************************************************/
- static void generateFixFixOnly ( FRAME_INFO *hSbrFrameInfo,
- int tranPosInternal,
- int numberTimeSlots
- )
-{
- int nEnv, i, tranIdx;
- const int *pTable;
-
- switch (numberTimeSlots) {
- case 8:
- pTable = FDK_sbrDecoder_envelopeTable_8[tranPosInternal];
- break;
- case 15:
- pTable = FDK_sbrDecoder_envelopeTable_15[tranPosInternal];
- break;
- case 16:
- pTable = FDK_sbrDecoder_envelopeTable_16[tranPosInternal];
- break;
- default:
- FDK_ASSERT(0);
- }
-
- /* look number of envelopes in table */
- nEnv = pTable[0];
- /* look up envelope distribution in table */
- for (i=1; i<nEnv; i++)
- hSbrFrameInfo->borders[i] = pTable[i+2];
- /* open and close frame border */
- hSbrFrameInfo->borders[0] = 0;
- hSbrFrameInfo->borders[nEnv] = numberTimeSlots;
- hSbrFrameInfo->nEnvelopes = nEnv;
-
- /* transient idx */
- tranIdx = hSbrFrameInfo->tranEnv = pTable[1];
-
- /* add noise floors */
- hSbrFrameInfo->bordersNoise[0] = 0;
- hSbrFrameInfo->bordersNoise[1] = hSbrFrameInfo->borders[tranIdx?tranIdx:1];
- hSbrFrameInfo->bordersNoise[2] = numberTimeSlots;
- /* nEnv is always > 1, so nNoiseEnvelopes is always 2 (IEC 14496-3 4.6.19.3.2) */
- hSbrFrameInfo->nNoiseEnvelopes = 2;
-}
-
-/*!
- \brief Extracts LowDelaySBR control data from the bitstream.
-
- \return zero for bitstream error, one for correct.
-*/
-static int
-extractLowDelayGrid (HANDLE_FDK_BITSTREAM hBitBuf, /*!< bitbuffer handle */
- HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA h_frame_data, /*!< contains the FRAME_INFO struct to be filled */
- int timeSlots
- )
-{
- FRAME_INFO * pFrameInfo = &h_frame_data->frameInfo;
- INT numberTimeSlots = hHeaderData->numberTimeSlots;
- INT temp = 0, k;
-
- /* FIXFIXonly framing case */
- h_frame_data->frameInfo.frameClass = 0;
-
- /* get the transient position from the bitstream */
- switch (timeSlots){
- case 8:
- /* 3bit transient position (temp={0;..;7}) */
- temp = FDKreadBits( hBitBuf, 3);
- break;
-
- case 16:
- case 15:
- /* 4bit transient position (temp={0;..;15}) */
- temp = FDKreadBits( hBitBuf, 4);
- break;
-
- default:
- return 0;
- }
-
- /* calculate borders according to the transient position */
- generateFixFixOnly ( pFrameInfo,
- temp,
- numberTimeSlots
- );
-
- /* decode freq res: */
- for (k = 0; k < pFrameInfo->nEnvelopes; k++) {
- pFrameInfo->freqRes[k] = (UCHAR) FDKreadBits (hBitBuf, 1); /* f = F [1 bits] */
- }
-
-
- return 1;
-}
-
-/*!
- \brief Extract the frame information (structure FRAME_INFO) from the bitstream
- \return Zero for bitstream error, one for correct.
-*/
-int
-extractFrameInfo ( HANDLE_FDK_BITSTREAM hBs, /*!< bitbuffer handle */
- HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- HANDLE_SBR_FRAME_DATA h_frame_data, /*!< pointer to memory where the frame-info will be stored */
- const UINT nrOfChannels,
- const UINT flags
- )
-{
- FRAME_INFO * pFrameInfo = &h_frame_data->frameInfo;
- int numberTimeSlots = hHeaderData->numberTimeSlots;
- int pointer_bits = 0, nEnv = 0, b = 0, border, i, n = 0,
- k, p, aL, aR, nL, nR,
- temp = 0, staticFreqRes;
- UCHAR frameClass;
-
- if (flags & SBRDEC_ELD_GRID) {
- /* CODEC_AACLD (LD+SBR) only uses the normal 0 Grid for non-transient Frames and the LowDelayGrid for transient Frames */
- frameClass = FDKreadBits (hBs, 1); /* frameClass = [1 bit] */
- if ( frameClass == 1 ) {
- /* if frameClass == 1, extract LowDelaySbrGrid, otherwise extract normal SBR-Grid for FIXIFX */
- /* extract the AACLD-Sbr-Grid */
- pFrameInfo->frameClass = frameClass;
- extractLowDelayGrid (hBs, hHeaderData, h_frame_data, numberTimeSlots);
- return 1;
- }
- } else
- {
- frameClass = FDKreadBits (hBs, 2); /* frameClass = C [2 bits] */
- }
-
-
- switch (frameClass) {
- case 0:
- temp = FDKreadBits (hBs, 2); /* E [2 bits ] */
- nEnv = (int) (1 << temp); /* E -> e */
-
- if ((flags & SBRDEC_ELD_GRID) && (nEnv == 1))
- h_frame_data->ampResolutionCurrentFrame = FDKreadBits( hBs, 1); /* new ELD Syntax 07-11-09 */
-
- staticFreqRes = FDKreadBits (hBs, 1);
-
- {
- if (nEnv > MAX_ENVELOPES_HEAAC)
- return 0;
- }
-
- b = nEnv + 1;
- switch (nEnv) {
- case 1:
- switch (numberTimeSlots) {
- case 15:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info1_15, sizeof(FRAME_INFO));
- break;
- case 16:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info1_16, sizeof(FRAME_INFO));
- break;
- default:
- FDK_ASSERT(0);
- }
- break;
- case 2:
- switch (numberTimeSlots) {
- case 15:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info2_15, sizeof(FRAME_INFO));
- break;
- case 16:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info2_16, sizeof(FRAME_INFO));
- break;
- default:
- FDK_ASSERT(0);
- }
- break;
- case 4:
- switch (numberTimeSlots) {
- case 15:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info4_15, sizeof(FRAME_INFO));
- break;
- case 16:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info4_16, sizeof(FRAME_INFO));
- break;
- default:
- FDK_ASSERT(0);
- }
- break;
- case 8:
-#if (MAX_ENVELOPES >= 8)
- switch (numberTimeSlots) {
- case 15:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info8_15, sizeof(FRAME_INFO));
- break;
- case 16:
- FDKmemcpy (pFrameInfo, &FDK_sbrDecoder_sbr_frame_info8_16, sizeof(FRAME_INFO));
- break;
- default:
- FDK_ASSERT(0);
- }
- break;
-#else
- return 0;
-#endif
- }
- /* Apply correct freqRes (High is default) */
- if (!staticFreqRes) {
- for (i = 0; i < nEnv ; i++)
- pFrameInfo->freqRes[i] = 0;
- }
-
- break;
- case 1:
- case 2:
- temp = FDKreadBits (hBs, 2); /* A [2 bits] */
-
- n = FDKreadBits (hBs, 2); /* n = N [2 bits] */
-
- nEnv = n + 1; /* # envelopes */
- b = nEnv + 1; /* # borders */
-
- break;
- }
-
- switch (frameClass) {
- case 1:
- /* Decode borders: */
- pFrameInfo->borders[0] = 0; /* first border */
- border = temp + numberTimeSlots; /* A -> aR */
- i = b-1; /* frame info index for last border */
- pFrameInfo->borders[i] = border; /* last border */
-
- for (k = 0; k < n; k++) {
- temp = FDKreadBits (hBs, 2);/* R [2 bits] */
- border -= (2 * temp + 2); /* R -> r */
- pFrameInfo->borders[--i] = border;
- }
-
-
- /* Decode pointer: */
- pointer_bits = DFRACT_BITS - 1 - CountLeadingBits((FIXP_DBL)(n+1));
- p = FDKreadBits (hBs, pointer_bits); /* p = P [pointer_bits bits] */
-
- if (p > n+1)
- return 0;
-
- pFrameInfo->tranEnv = p ? n + 2 - p : -1;
-
-
- /* Decode freq res: */
- for (k = n; k >= 0; k--) {
- pFrameInfo->freqRes[k] = FDKreadBits (hBs, 1); /* f = F [1 bits] */
- }
-
-
- /* Calculate noise floor middle border: */
- if (p == 0 || p == 1)
- pFrameInfo->bordersNoise[1] = pFrameInfo->borders[n];
- else
- pFrameInfo->bordersNoise[1] = pFrameInfo->borders[pFrameInfo->tranEnv];
-
- break;
-
- case 2:
- /* Decode borders: */
- border = temp; /* A -> aL */
- pFrameInfo->borders[0] = border; /* first border */
-
- for (k = 1; k <= n; k++) {
- temp = FDKreadBits (hBs, 2);/* R [2 bits] */
- border += (2 * temp + 2); /* R -> r */
- pFrameInfo->borders[k] = border;
- }
- pFrameInfo->borders[k] = numberTimeSlots; /* last border */
-
-
- /* Decode pointer: */
- pointer_bits = DFRACT_BITS - 1 - CountLeadingBits((FIXP_DBL)(n+1));
- p = FDKreadBits (hBs, pointer_bits); /* p = P [pointer_bits bits] */
- if (p > n+1)
- return 0;
-
- if (p == 0 || p == 1)
- pFrameInfo->tranEnv = -1;
- else
- pFrameInfo->tranEnv = p - 1;
-
-
-
- /* Decode freq res: */
- for (k = 0; k <= n; k++) {
- pFrameInfo->freqRes[k] = FDKreadBits(hBs, 1); /* f = F [1 bits] */
- }
-
-
-
- /* Calculate noise floor middle border: */
- switch (p) {
- case 0:
- pFrameInfo->bordersNoise[1] = pFrameInfo->borders[1];
- break;
- case 1:
- pFrameInfo->bordersNoise[1] = pFrameInfo->borders[n];
- break;
- default:
- pFrameInfo->bordersNoise[1] = pFrameInfo->borders[pFrameInfo->tranEnv];
- break;
- }
-
- break;
-
- case 3:
- /* v_ctrlSignal = [frameClass,aL,aR,nL,nR,v_rL,v_rR,p,v_fLR]; */
-
- aL = FDKreadBits (hBs, 2); /* AL [2 bits], AL -> aL */
-
- aR = FDKreadBits (hBs, 2) + numberTimeSlots; /* AR [2 bits], AR -> aR */
-
- nL = FDKreadBits (hBs, 2); /* nL = NL [2 bits] */
-
- nR = FDKreadBits (hBs, 2); /* nR = NR [2 bits] */
-
-
-
- /*-------------------------------------------------------------------------
- Calculate help variables
- --------------------------------------------------------------------------*/
-
- /* general: */
- nEnv = nL + nR + 1; /* # envelopes */
- if (nEnv > MAX_ENVELOPES)
- return 0;
- b = nEnv + 1; /* # borders */
-
-
-
- /*-------------------------------------------------------------------------
- Decode envelopes
- --------------------------------------------------------------------------*/
-
-
- /* L-borders: */
- border = aL; /* first border */
- pFrameInfo->borders[0] = border;
-
- for (k = 1; k <= nL; k++) {
- temp = FDKreadBits (hBs, 2);/* R [2 bits] */
- border += (2 * temp + 2); /* R -> r */
- pFrameInfo->borders[k] = border;
- }
-
-
- /* R-borders: */
- border = aR; /* last border */
- i = nEnv;
-
- pFrameInfo->borders[i] = border;
-
- for (k = 0; k < nR; k++) {
- temp = FDKreadBits (hBs, 2);/* R [2 bits] */
- border -= (2 * temp + 2); /* R -> r */
- pFrameInfo->borders[--i] = border;
- }
-
-
- /* decode pointer: */
- pointer_bits = DFRACT_BITS - 1 - CountLeadingBits((FIXP_DBL)(nL+nR+1));
- p = FDKreadBits (hBs, pointer_bits); /* p = P [pointer_bits bits] */
-
- if (p > nL+nR+1)
- return 0;
-
- pFrameInfo->tranEnv = p ? b - p : -1;
-
-
-
- /* decode freq res: */
- for (k = 0; k < nEnv; k++) {
- pFrameInfo->freqRes[k] = FDKreadBits(hBs, 1); /* f = F [1 bits] */
- }
-
-
-
- /*-------------------------------------------------------------------------
- Decode noise floors
- --------------------------------------------------------------------------*/
- pFrameInfo->bordersNoise[0] = aL;
-
- if (nEnv == 1) {
- /* 1 noise floor envelope: */
- pFrameInfo->bordersNoise[1] = aR;
- }
- else {
- /* 2 noise floor envelopes */
- if (p == 0 || p == 1)
- pFrameInfo->bordersNoise[1] = pFrameInfo->borders[nEnv - 1];
- else
- pFrameInfo->bordersNoise[1] = pFrameInfo->borders[pFrameInfo->tranEnv];
- pFrameInfo->bordersNoise[2] = aR;
- }
- break;
- }
-
-
- /*
- Store number of envelopes, noise floor envelopes and frame class
- */
- pFrameInfo->nEnvelopes = nEnv;
-
- if (nEnv == 1)
- pFrameInfo->nNoiseEnvelopes = 1;
- else
- pFrameInfo->nNoiseEnvelopes = 2;
-
- pFrameInfo->frameClass = frameClass;
-
- if (pFrameInfo->frameClass == 2 || pFrameInfo->frameClass == 1) {
- /* calculate noise floor first and last borders: */
- pFrameInfo->bordersNoise[0] = pFrameInfo->borders[0];
- pFrameInfo->bordersNoise[pFrameInfo->nNoiseEnvelopes] = pFrameInfo->borders[nEnv];
- }
-
-
- return 1;
-}
-
-
-/*!
- \brief Check if the frameInfo vector has reasonable values.
- \return Zero for error, one for correct
-*/
-static int
-checkFrameInfo (FRAME_INFO * pFrameInfo, /*!< pointer to frameInfo */
- int numberOfTimeSlots, /*!< QMF time slots per frame */
- int overlap, /*!< Amount of overlap QMF time slots */
- int timeStep) /*!< QMF slots to SBR slots step factor */
-{
- int maxPos,i,j;
- int startPos;
- int stopPos;
- int tranEnv;
- int startPosNoise;
- int stopPosNoise;
- int nEnvelopes = pFrameInfo->nEnvelopes;
- int nNoiseEnvelopes = pFrameInfo->nNoiseEnvelopes;
-
- if(nEnvelopes < 1 || nEnvelopes > MAX_ENVELOPES)
- return 0;
-
- if(nNoiseEnvelopes > MAX_NOISE_ENVELOPES)
- return 0;
-
- startPos = pFrameInfo->borders[0];
- stopPos = pFrameInfo->borders[nEnvelopes];
- tranEnv = pFrameInfo->tranEnv;
- startPosNoise = pFrameInfo->bordersNoise[0];
- stopPosNoise = pFrameInfo->bordersNoise[nNoiseEnvelopes];
-
- if (overlap < 0 || overlap > (6)) {
- return 0;
- }
- if (timeStep < 1 || timeStep > 2) {
- return 0;
- }
- maxPos = numberOfTimeSlots + (overlap/timeStep);
-
- /* Check that the start and stop positions of the frame are reasonable values. */
- if( (startPos < 0) || (startPos >= stopPos) )
- return 0;
- if( startPos > maxPos-numberOfTimeSlots ) /* First env. must start in or directly after the overlap buffer */
- return 0;
- if( stopPos < numberOfTimeSlots ) /* One complete frame must be ready for output after processing */
- return 0;
- if(stopPos > maxPos)
- return 0;
-
- /* Check that the start border for every envelope is strictly later in time */
- for(i=0;i<nEnvelopes;i++) {
- if(pFrameInfo->borders[i] >= pFrameInfo->borders[i+1])
- return 0;
- }
-
- /* Check that the envelope to be shortened is actually among the envelopes */
- if(tranEnv>nEnvelopes)
- return 0;
-
-
- /* Check the noise borders */
- if(nEnvelopes==1 && nNoiseEnvelopes>1)
- return 0;
-
- if(startPos != startPosNoise || stopPos != stopPosNoise)
- return 0;
-
-
- /* Check that the start border for every noise-envelope is strictly later in time*/
- for(i=0; i<nNoiseEnvelopes; i++) {
- if(pFrameInfo->bordersNoise[i] >= pFrameInfo->bordersNoise[i+1])
- return 0;
- }
-
- /* Check that every noise border is the same as an envelope border*/
- for(i=0; i<nNoiseEnvelopes; i++) {
- startPosNoise = pFrameInfo->bordersNoise[i];
-
- for(j=0; j<nEnvelopes; j++) {
- if(pFrameInfo->borders[j] == startPosNoise)
- break;
- }
- if(j==nEnvelopes)
- return 0;
- }
-
- return 1;
-}
diff --git a/libSBRdec/src/env_extr.h b/libSBRdec/src/env_extr.h
deleted file mode 100644
index 5db6d3d..0000000
--- a/libSBRdec/src/env_extr.h
+++ /dev/null
@@ -1,319 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Envelope extraction prototypes
-*/
-
-#ifndef __ENVELOPE_EXTRACTION_H
-#define __ENVELOPE_EXTRACTION_H
-
-#include "sbrdecoder.h"
-
-#include "FDK_bitstream.h"
-#include "lpp_tran.h"
-
-#include "psdec.h"
-
-#define ENV_EXP_FRACT 0
-/*!< Shift raw envelope data to support fractional numbers.
- Can be set to 8 instead of 0 to enhance accuracy during concealment.
- This is not required for conformance and #requantizeEnvelopeData() will
- become more expensive.
-*/
-
-#define EXP_BITS 6
-/*!< Size of exponent-part of a pseudo float envelope value (should be at least 6).
- The remaining bits in each word are used for the mantissa (should be at least 10).
- This format is used in the arrays iEnvelope[] and sbrNoiseFloorLevel[]
- in the FRAME_DATA struct which must fit in a certain part of the output buffer
- (See buffer management in sbr_dec.cpp).
- Exponents and mantissas could also be stored in separate arrays.
- Accessing the exponent or the mantissa would be simplified and the masks #MASK_E
- resp. #MASK_M would no longer be required.
-*/
-
-#define MASK_M (((1 << (FRACT_BITS - EXP_BITS)) - 1) << EXP_BITS) /*!< Mask for extracting the mantissa of a pseudo float envelope value */
-#define MASK_E ((1 << EXP_BITS) - 1) /*!< Mask for extracting the exponent of a pseudo float envelope value */
-
-#define SIGN_EXT ( ((SCHAR)-1) ^ MASK_E) /*!< a CHAR-constant with all bits above our sign-bit set */
-#define ROUNDING ( (FIXP_SGL)(1<<(EXP_BITS-1)) ) /*!< 0.5-offset for rounding the mantissa of a pseudo-float envelope value */
-#define NRG_EXP_OFFSET 16 /*!< Will be added to the reference energy's exponent to prevent negative numbers */
-#define NOISE_EXP_OFFSET 38 /*!< Will be added to the noise level exponent to prevent negative numbers */
-
-typedef enum
-{
- HEADER_NOT_PRESENT,
- HEADER_OK,
- HEADER_RESET
-}
-SBR_HEADER_STATUS;
-
-typedef enum
-{
- SBR_NOT_INITIALIZED,
- UPSAMPLING,
- SBR_HEADER,
- SBR_ACTIVE
-}
-SBR_SYNC_STATE;
-
-
-typedef enum
-{
- COUPLING_OFF = 0,
- COUPLING_LEVEL,
- COUPLING_BAL
-}
-COUPLING_MODE;
-
-typedef struct
-{
- UCHAR nSfb[2]; /*!< Number of SBR-bands for low and high freq-resolution */
- UCHAR nNfb; /*!< Actual number of noise bands to read from the bitstream*/
- UCHAR numMaster; /*!< Number of SBR-bands in v_k_master */
- UCHAR lowSubband; /*!< QMF-band where SBR frequency range starts */
- UCHAR highSubband; /*!< QMF-band where SBR frequency range ends */
- UCHAR limiterBandTable[MAX_NUM_LIMITERS+1]; /*!< Limiter band table. */
- UCHAR noLimiterBands; /*!< Number of limiter bands. */
- UCHAR nInvfBands; /*!< Number of bands for inverse filtering */
- UCHAR *freqBandTable[2]; /*!< Pointers to freqBandTableLo and freqBandTableHi */
- UCHAR freqBandTableLo[MAX_FREQ_COEFFS/2+1];
- /*!< Mapping of SBR bands to QMF bands for low frequency resolution */
- UCHAR freqBandTableHi[MAX_FREQ_COEFFS+1];
- /*!< Mapping of SBR bands to QMF bands for high frequency resolution */
- UCHAR freqBandTableNoise[MAX_NOISE_COEFFS+1];
- /*!< Mapping of SBR noise bands to QMF bands */
- UCHAR v_k_master[MAX_FREQ_COEFFS+1];
- /*!< Master BandTable which freqBandTable is derived from */
-}
-FREQ_BAND_DATA;
-
-typedef FREQ_BAND_DATA *HANDLE_FREQ_BAND_DATA;
-
-#define SBRDEC_ELD_GRID 1
-#define SBRDEC_SYNTAX_SCAL 2
-#define SBRDEC_SYNTAX_USAC 4
-#define SBRDEC_SYNTAX_RSVD50 8
-#define SBRDEC_LOW_POWER 16 /* Flag indicating that Low Power QMF mode shall be used. */
-#define SBRDEC_PS_DECODED 32 /* Flag indicating that PS was decoded and rendered. */
-#define SBRDEC_LD_MPS_QMF 512 /* Flag indicating that the LD-MPS QMF shall be used. */
-
-#define SBRDEC_HDR_STAT_RESET 1
-#define SBRDEC_HDR_STAT_UPDATE 2
-
-typedef struct {
- UCHAR ampResolution; /*!< Amplitude resolution of envelope values (0: 1.5dB, 1: 3dB) */
- UCHAR xover_band; /*!< Start index in #v_k_master[] used for dynamic crossover frequency */
- UCHAR sbr_preprocessing; /*!< SBR prewhitening flag. */
-} SBR_HEADER_DATA_BS_INFO;
-
-typedef struct {
- /* Changes in these variables causes a reset of the decoder */
- UCHAR startFreq; /*!< Index for SBR start frequency */
- UCHAR stopFreq; /*!< Index for SBR highest frequency */
- UCHAR freqScale; /*!< 0: linear scale, 1-3 logarithmic scales */
- UCHAR alterScale; /*!< Flag for coarser frequency resolution */
- UCHAR noise_bands; /*!< Noise bands per octave, read from bitstream*/
-
- /* don't require reset */
- UCHAR limiterBands; /*!< Index for number of limiter bands per octave */
- UCHAR limiterGains; /*!< Index to select gain limit */
- UCHAR interpolFreq; /*!< Select gain calculation method (1: per QMF channel, 0: per SBR band) */
- UCHAR smoothingLength; /*!< Smoothing of gains over time (0: on 1: off) */
-
-} SBR_HEADER_DATA_BS;
-
-typedef struct
-{
- SBR_SYNC_STATE syncState; /*!< The current initialization status of the header */
-
- UCHAR status; /*!< Flags field used for signaling a reset right before the processing starts and an update from config (e.g. ASC). */
- UCHAR frameErrorFlag; /*!< Frame data valid flag. CAUTION: This variable will be overwritten by the flag stored in the element structure.
- This is necessary because of the frame delay. There it might happen that different slots use the same header. */
- UCHAR numberTimeSlots; /*!< AAC: 16,15 */
- UCHAR numberOfAnalysisBands; /*!< Number of QMF analysis bands */
- UCHAR timeStep; /*!< Time resolution of SBR in QMF-slots */
- UINT sbrProcSmplRate; /*!< SBR processing sampling frequency (!= OutputSamplingRate)
- (always: CoreSamplingRate * UpSamplingFactor; even in single rate mode) */
-
- SBR_HEADER_DATA_BS bs_data; /*!< current SBR header. */
- SBR_HEADER_DATA_BS_INFO bs_info; /*!< SBR info. */
-
- FREQ_BAND_DATA freqBandData; /*!< Pointer to struct #FREQ_BAND_DATA */
-}
-SBR_HEADER_DATA;
-
-typedef SBR_HEADER_DATA *HANDLE_SBR_HEADER_DATA;
-
-
-typedef struct
-{
- UCHAR frameClass; /*!< Select grid type */
- UCHAR nEnvelopes; /*!< Number of envelopes */
- UCHAR borders[MAX_ENVELOPES+1]; /*!< Envelope borders (in SBR-timeslots, e.g. mp3PRO: 0..11) */
- UCHAR freqRes[MAX_ENVELOPES]; /*!< Frequency resolution for each envelope (0=low, 1=high) */
- SCHAR tranEnv; /*!< Transient envelope, -1 if none */
- UCHAR nNoiseEnvelopes; /*!< Number of noise envelopes */
- UCHAR bordersNoise[MAX_NOISE_ENVELOPES+1];/*!< borders of noise envelopes */
-}
-FRAME_INFO;
-
-
-typedef struct
-{
- FIXP_SGL sfb_nrg_prev[MAX_FREQ_COEFFS]; /*!< Previous envelope (required for differential-coded values) */
- FIXP_SGL prevNoiseLevel[MAX_NOISE_COEFFS]; /*!< Previous noise envelope (required for differential-coded values) */
- COUPLING_MODE coupling; /*!< Stereo-mode of previous frame */
- INVF_MODE sbr_invf_mode[MAX_INVF_BANDS]; /*!< Previous strength of filtering in transposer */
- UCHAR ampRes; /*!< Previous amplitude resolution (0: 1.5dB, 1: 3dB) */
- UCHAR stopPos; /*!< Position in time where last envelope ended */
- UCHAR frameErrorFlag; /*!< Previous frame status */
-}
-SBR_PREV_FRAME_DATA;
-
-typedef SBR_PREV_FRAME_DATA *HANDLE_SBR_PREV_FRAME_DATA;
-
-
-typedef struct
-{
- int nScaleFactors; /*!< total number of scalefactors in frame */
-
- FRAME_INFO frameInfo; /*!< time grid for current frame */
- UCHAR domain_vec[MAX_ENVELOPES]; /*!< Bitfield containing direction of delta-coding for each envelope (0:frequency, 1:time) */
- UCHAR domain_vec_noise[MAX_NOISE_ENVELOPES]; /*!< Same as above, but for noise envelopes */
-
- INVF_MODE sbr_invf_mode[MAX_INVF_BANDS]; /*!< Strength of filtering in transposer */
- COUPLING_MODE coupling; /*!< Stereo-mode */
- int ampResolutionCurrentFrame; /*!< Amplitude resolution of envelope values (0: 1.5dB, 1: 3dB) */
-
- UCHAR addHarmonics[MAX_FREQ_COEFFS]; /*!< Flags for synthetic sine addition */
-
- FIXP_SGL iEnvelope[MAX_NUM_ENVELOPE_VALUES]; /*!< Envelope data */
- FIXP_SGL sbrNoiseFloorLevel[MAX_NUM_NOISE_VALUES]; /*!< Noise envelope data */
-}
-SBR_FRAME_DATA;
-
-typedef SBR_FRAME_DATA *HANDLE_SBR_FRAME_DATA;
-
-void initSbrPrevFrameData (HANDLE_SBR_PREV_FRAME_DATA h_prev_data,
- int timeSlots);
-
-
-int sbrGetSingleChannelElement (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA hFrameData,
- HANDLE_FDK_BITSTREAM hBitBuf,
- HANDLE_PS_DEC hParametricStereoDec,
- const UINT flags,
- const int overlap
- );
-
-int sbrGetChannelPairElement (HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA hFrameDataLeft,
- HANDLE_SBR_FRAME_DATA hFrameDataRight,
- HANDLE_FDK_BITSTREAM hBitBuf,
- const UINT flags,
- const int overlap);
-
-SBR_HEADER_STATUS
-sbrGetHeaderData (HANDLE_SBR_HEADER_DATA headerData,
- HANDLE_FDK_BITSTREAM hBitBuf,
- const UINT flags,
- const int fIsSbrData);
-
-/*!
- \brief Initialize SBR header data
-
- Copy default values to the header data struct and patch some entries
- depending on the core codec.
-*/
-SBR_ERROR
-initHeaderData (
- HANDLE_SBR_HEADER_DATA hHeaderData,
- const int sampleRateIn,
- const int sampleRateOut,
- const int samplesPerFrame,
- const UINT flags
- );
-#endif
diff --git a/libSBRdec/src/huff_dec.cpp b/libSBRdec/src/huff_dec.cpp
deleted file mode 100644
index 31d686d..0000000
--- a/libSBRdec/src/huff_dec.cpp
+++ /dev/null
@@ -1,120 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Huffman Decoder
-*/
-
-#include "huff_dec.h"
-
-/***************************************************************************/
-/*!
- \brief Decodes one huffman code word
-
- Reads bits from the bitstream until a valid codeword is found.
- The table entries are interpreted either as index to the next entry
- or - if negative - as the codeword.
-
- \return decoded value
-
- \author
-
-****************************************************************************/
-int
-DecodeHuffmanCW (Huffman h, /*!< pointer to huffman codebook table */
- HANDLE_FDK_BITSTREAM hBs) /*!< Handle to Bitbuffer */
-{
- SCHAR index = 0;
- int value, bit;
-
- while (index >= 0) {
- bit = FDKreadBits (hBs, 1);
- index = h[index][bit];
- }
-
- value = index+64; /* Add offset */
-
-
- return value;
-}
diff --git a/libSBRdec/src/huff_dec.h b/libSBRdec/src/huff_dec.h
deleted file mode 100644
index 5443658..0000000
--- a/libSBRdec/src/huff_dec.h
+++ /dev/null
@@ -1,100 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Huffman Decoder
-*/
-#ifndef __HUFF_DEC_H
-#define __HUFF_DEC_H
-
-#include "sbrdecoder.h"
-#include "FDK_bitstream.h"
-
-typedef const SCHAR (*Huffman)[2];
-
-int
-DecodeHuffmanCW (Huffman h,
- HANDLE_FDK_BITSTREAM hBitBuf);
-
-#endif
diff --git a/libSBRdec/src/lpp_tran.cpp b/libSBRdec/src/lpp_tran.cpp
deleted file mode 100644
index 117e739..0000000
--- a/libSBRdec/src/lpp_tran.cpp
+++ /dev/null
@@ -1,986 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Low Power Profile Transposer,
- This module provides the transposer. The main entry point is lppTransposer(). The function generates
- high frequency content by copying data from the low band (provided by core codec) into the high band.
- This process is also referred to as "patching". The function also implements spectral whitening by means of
- inverse filtering based on LPC coefficients.
-
- Together with the QMF filterbank the transposer can be tested using a supplied test program. See main_audio.cpp for details.
- This module does use fractional arithmetic and the accuracy of the computations has an impact on the overall sound quality.
- The module also needs to take into account the different scaling of spectral data.
-
- \sa lppTransposer(), main_audio.cpp, sbr_scale.h, \ref documentationOverview
-*/
-
-#include "lpp_tran.h"
-
-#include "sbr_ram.h"
-#include "sbr_rom.h"
-
-#include "genericStds.h"
-#include "autocorr2nd.h"
-
-
-
-#if defined(__arm__)
-#include "arm/lpp_tran_arm.cpp"
-#endif
-
-
-
-#define LPC_SCALE_FACTOR 2
-
-
-/*!
- *
- * \brief Get bandwidth expansion factor from filtering level
- *
- * Returns a filter parameter (bandwidth expansion factor) depending on
- * the desired filtering level signalled in the bitstream.
- * When switching the filtering level from LOW to OFF, an additional
- * level is being inserted to achieve a smooth transition.
- */
-
-#ifndef FUNCTION_mapInvfMode
-static FIXP_DBL
-mapInvfMode (INVF_MODE mode,
- INVF_MODE prevMode,
- WHITENING_FACTORS whFactors)
-{
- switch (mode) {
- case INVF_LOW_LEVEL:
- if(prevMode == INVF_OFF)
- return whFactors.transitionLevel;
- else
- return whFactors.lowLevel;
-
- case INVF_MID_LEVEL:
- return whFactors.midLevel;
-
- case INVF_HIGH_LEVEL:
- return whFactors.highLevel;
-
- default:
- if(prevMode == INVF_LOW_LEVEL)
- return whFactors.transitionLevel;
- else
- return whFactors.off;
- }
-}
-#endif /* #ifndef FUNCTION_mapInvfMode */
-
-/*!
- *
- * \brief Perform inverse filtering level emphasis
- *
- * Retrieve bandwidth expansion factor and apply smoothing for each filter band
- *
- */
-
-#ifndef FUNCTION_inverseFilteringLevelEmphasis
-static void
-inverseFilteringLevelEmphasis(HANDLE_SBR_LPP_TRANS hLppTrans,/*!< Handle of lpp transposer */
- UCHAR nInvfBands, /*!< Number of bands for inverse filtering */
- INVF_MODE *sbr_invf_mode, /*!< Current inverse filtering modes */
- INVF_MODE *sbr_invf_mode_prev, /*!< Previous inverse filtering modes */
- FIXP_DBL * bwVector /*!< Resulting filtering levels */
- )
-{
- for(int i = 0; i < nInvfBands; i++) {
- FIXP_DBL accu;
- FIXP_DBL bwTmp = mapInvfMode (sbr_invf_mode[i],
- sbr_invf_mode_prev[i],
- hLppTrans->pSettings->whFactors);
-
- if(bwTmp < hLppTrans->bwVectorOld[i]) {
- accu = fMultDiv2(FL2FXCONST_DBL(0.75f),bwTmp) +
- fMultDiv2(FL2FXCONST_DBL(0.25f),hLppTrans->bwVectorOld[i]);
- }
- else {
- accu = fMultDiv2(FL2FXCONST_DBL(0.90625f),bwTmp) +
- fMultDiv2(FL2FXCONST_DBL(0.09375f),hLppTrans->bwVectorOld[i]);
- }
-
- if (accu < FL2FXCONST_DBL(0.015625f)>>1)
- bwVector[i] = FL2FXCONST_DBL(0.0f);
- else
- bwVector[i] = fixMin(accu<<1,FL2FXCONST_DBL(0.99609375f));
- }
-}
-#endif /* #ifndef FUNCTION_inverseFilteringLevelEmphasis */
-
-/* Resulting autocorrelation determinant exponent */
-#define ACDET_EXP (2*(DFRACT_BITS+sbrScaleFactor->lb_scale+10-ac.det_scale))
-#define AC_EXP (-sbrScaleFactor->lb_scale+LPC_SCALE_FACTOR)
-#define ALPHA_EXP (-sbrScaleFactor->lb_scale+LPC_SCALE_FACTOR+1)
-/* Resulting transposed QMF values exponent 16 bit normalized samplebits assumed. */
-#define QMFOUT_EXP ((SAMPLE_BITS-15)-sbrScaleFactor->lb_scale)
-
-/*!
- *
- * \brief Perform transposition by patching of subband samples.
- * This function serves as the main entry point into the module. The function determines the areas for the
- * patching process (these are the source range as well as the target range) and implements spectral whitening
- * by means of inverse filtering. The function autoCorrelation2nd() is an auxiliary function for calculating the
- * LPC coefficients for the filtering. The actual calculation of the LPC coefficients and the implementation
- * of the filtering are done as part of lppTransposer().
- *
- * Note that the filtering is done on all available QMF subsamples, whereas the patching is only done on those QMF
- * subsamples that will be used in the next QMF synthesis. The filtering is also implemented before the patching
- * includes further dependencies on parameters from the SBR data.
- *
- */
-
-void lppTransposer (HANDLE_SBR_LPP_TRANS hLppTrans, /*!< Handle of lpp transposer */
- QMF_SCALE_FACTOR *sbrScaleFactor, /*!< Scaling factors */
- FIXP_DBL **qmfBufferReal, /*!< Pointer to pointer to real part of subband samples (source) */
-
- FIXP_DBL *degreeAlias, /*!< Vector for results of aliasing estimation */
- FIXP_DBL **qmfBufferImag, /*!< Pointer to pointer to imaginary part of subband samples (source) */
- const int useLP,
- const int timeStep, /*!< Time step of envelope */
- const int firstSlotOffs, /*!< Start position in time */
- const int lastSlotOffs, /*!< Number of overlap-slots into next frame */
- const int nInvfBands, /*!< Number of bands for inverse filtering */
- INVF_MODE *sbr_invf_mode, /*!< Current inverse filtering modes */
- INVF_MODE *sbr_invf_mode_prev /*!< Previous inverse filtering modes */
- )
-{
- INT bwIndex[MAX_NUM_PATCHES];
- FIXP_DBL bwVector[MAX_NUM_PATCHES]; /*!< pole moving factors */
-
- int i;
- int loBand, start, stop;
- TRANSPOSER_SETTINGS *pSettings = hLppTrans->pSettings;
- PATCH_PARAM *patchParam = pSettings->patchParam;
- int patch;
-
- FIXP_SGL alphar[LPC_ORDER], a0r, a1r;
- FIXP_SGL alphai[LPC_ORDER], a0i=0, a1i=0;
- FIXP_SGL bw = FL2FXCONST_SGL(0.0f);
-
- int autoCorrLength;
-
- FIXP_DBL k1, k1_below=0, k1_below2=0;
-
- ACORR_COEFS ac;
- int startSample;
- int stopSample;
- int stopSampleClear;
-
- int comLowBandScale;
- int ovLowBandShift;
- int lowBandShift;
-/* int ovHighBandShift;*/
- int targetStopBand;
-
-
- alphai[0] = FL2FXCONST_SGL(0.0f);
- alphai[1] = FL2FXCONST_SGL(0.0f);
-
-
- startSample = firstSlotOffs * timeStep;
- stopSample = pSettings->nCols + lastSlotOffs * timeStep;
-
-
- inverseFilteringLevelEmphasis(hLppTrans, nInvfBands, sbr_invf_mode, sbr_invf_mode_prev, bwVector);
-
- stopSampleClear = stopSample;
-
- autoCorrLength = pSettings->nCols + pSettings->overlap;
-
- /* Set upper subbands to zero:
- This is required in case that the patches do not cover the complete highband
- (because the last patch would be too short).
- Possible optimization: Clearing bands up to usb would be sufficient here. */
- targetStopBand = patchParam[pSettings->noOfPatches-1].targetStartBand
- + patchParam[pSettings->noOfPatches-1].numBandsInPatch;
-
- int memSize = ((64) - targetStopBand) * sizeof(FIXP_DBL);
-
- if (!useLP) {
- for (i = startSample; i < stopSampleClear; i++) {
- FDKmemclear(&qmfBufferReal[i][targetStopBand], memSize);
- FDKmemclear(&qmfBufferImag[i][targetStopBand], memSize);
- }
- } else
- for (i = startSample; i < stopSampleClear; i++) {
- FDKmemclear(&qmfBufferReal[i][targetStopBand], memSize);
- }
-
- /* init bwIndex for each patch */
- FDKmemclear(bwIndex, pSettings->noOfPatches*sizeof(INT));
-
- /*
- Calc common low band scale factor
- */
- comLowBandScale = fixMin(sbrScaleFactor->ov_lb_scale,sbrScaleFactor->lb_scale);
-
- ovLowBandShift = sbrScaleFactor->ov_lb_scale - comLowBandScale;
- lowBandShift = sbrScaleFactor->lb_scale - comLowBandScale;
- /* ovHighBandShift = firstSlotOffs == 0 ? ovLowBandShift:0;*/
-
- /* outer loop over bands to do analysis only once for each band */
-
- if (!useLP) {
- start = pSettings->lbStartPatching;
- stop = pSettings->lbStopPatching;
- } else
- {
- start = fixMax(1, pSettings->lbStartPatching - 2);
- stop = patchParam[0].targetStartBand;
- }
-
-
- for ( loBand = start; loBand < stop; loBand++ ) {
-
- FIXP_DBL lowBandReal[(((1024)/(32))+(6))+LPC_ORDER];
- FIXP_DBL *plowBandReal = lowBandReal;
- FIXP_DBL **pqmfBufferReal = qmfBufferReal;
- FIXP_DBL lowBandImag[(((1024)/(32))+(6))+LPC_ORDER];
- FIXP_DBL *plowBandImag = lowBandImag;
- FIXP_DBL **pqmfBufferImag = qmfBufferImag;
- int resetLPCCoeffs=0;
- int dynamicScale = DFRACT_BITS-1-LPC_SCALE_FACTOR;
- int acDetScale = 0; /* scaling of autocorrelation determinant */
-
- for(i=0;i<LPC_ORDER;i++){
- *plowBandReal++ = hLppTrans->lpcFilterStatesReal[i][loBand];
- if (!useLP)
- *plowBandImag++ = hLppTrans->lpcFilterStatesImag[i][loBand];
- }
-
- /*
- Take old slope length qmf slot source values out of (overlap)qmf buffer
- */
- if (!useLP) {
- for(i=0;i<pSettings->nCols+pSettings->overlap;i++){
- *plowBandReal++ = (*pqmfBufferReal++)[loBand];
- *plowBandImag++ = (*pqmfBufferImag++)[loBand];
- }
- } else
- {
- /* pSettings->overlap is always even */
- FDK_ASSERT((pSettings->overlap & 1) == 0);
-
- for(i=0;i<((pSettings->overlap+pSettings->nCols)>>1);i++) {
- *plowBandReal++ = (*pqmfBufferReal++)[loBand];
- *plowBandReal++ = (*pqmfBufferReal++)[loBand];
- }
- if (pSettings->nCols & 1) {
- *plowBandReal++ = (*pqmfBufferReal++)[loBand];
- }
- }
-
- /*
- Determine dynamic scaling value.
- */
- dynamicScale = fixMin(dynamicScale, getScalefactor(lowBandReal, LPC_ORDER+pSettings->overlap) + ovLowBandShift);
- dynamicScale = fixMin(dynamicScale, getScalefactor(&lowBandReal[LPC_ORDER+pSettings->overlap], pSettings->nCols) + lowBandShift);
- if (!useLP) {
- dynamicScale = fixMin(dynamicScale, getScalefactor(lowBandImag, LPC_ORDER+pSettings->overlap) + ovLowBandShift);
- dynamicScale = fixMin(dynamicScale, getScalefactor(&lowBandImag[LPC_ORDER+pSettings->overlap], pSettings->nCols) + lowBandShift);
- }
- dynamicScale = fixMax(0, dynamicScale-1); /* one additional bit headroom to prevent -1.0 */
-
- /*
- Scale temporal QMF buffer.
- */
- scaleValues(&lowBandReal[0], LPC_ORDER+pSettings->overlap, dynamicScale-ovLowBandShift);
- scaleValues(&lowBandReal[LPC_ORDER+pSettings->overlap], pSettings->nCols, dynamicScale-lowBandShift);
-
- if (!useLP) {
- scaleValues(&lowBandImag[0], LPC_ORDER+pSettings->overlap, dynamicScale-ovLowBandShift);
- scaleValues(&lowBandImag[LPC_ORDER+pSettings->overlap], pSettings->nCols, dynamicScale-lowBandShift);
- }
-
-
- if (!useLP) {
- acDetScale += autoCorr2nd_cplx(&ac, lowBandReal+LPC_ORDER, lowBandImag+LPC_ORDER, autoCorrLength);
- }
- else
- {
- acDetScale += autoCorr2nd_real(&ac, lowBandReal+LPC_ORDER, autoCorrLength);
- }
-
- /* Examine dynamic of determinant in autocorrelation. */
- acDetScale += 2*(comLowBandScale + dynamicScale);
- acDetScale *= 2; /* two times reflection coefficent scaling */
- acDetScale += ac.det_scale; /* ac scaling of determinant */
-
- /* In case of determinant < 10^-38, resetLPCCoeffs=1 has to be enforced. */
- if (acDetScale>126 ) {
- resetLPCCoeffs = 1;
- }
-
-
- alphar[1] = FL2FXCONST_SGL(0.0f);
- if (!useLP)
- alphai[1] = FL2FXCONST_SGL(0.0f);
-
- if (ac.det != FL2FXCONST_DBL(0.0f)) {
- FIXP_DBL tmp,absTmp,absDet;
-
- absDet = fixp_abs(ac.det);
-
- if (!useLP) {
- tmp = ( fMultDiv2(ac.r01r,ac.r12r) >> (LPC_SCALE_FACTOR-1) ) -
- ( (fMultDiv2(ac.r01i,ac.r12i) + fMultDiv2(ac.r02r,ac.r11r)) >> (LPC_SCALE_FACTOR-1) );
- } else
- {
- tmp = ( fMultDiv2(ac.r01r,ac.r12r) >> (LPC_SCALE_FACTOR-1) ) -
- ( fMultDiv2(ac.r02r,ac.r11r) >> (LPC_SCALE_FACTOR-1) );
- }
- absTmp = fixp_abs(tmp);
-
- /*
- Quick check: is first filter coeff >= 1(4)
- */
- {
- INT scale;
- FIXP_DBL result = fDivNorm(absTmp, absDet, &scale);
- scale = scale+ac.det_scale;
-
- if ( (scale > 0) && (result >= (FIXP_DBL)MAXVAL_DBL>>scale) ) {
- resetLPCCoeffs = 1;
- }
- else {
- alphar[1] = FX_DBL2FX_SGL(scaleValue(result,scale));
- if((tmp<FL2FX_DBL(0.0f)) ^ (ac.det<FL2FX_DBL(0.0f))) {
- alphar[1] = -alphar[1];
- }
- }
- }
-
- if (!useLP)
- {
- tmp = ( fMultDiv2(ac.r01i,ac.r12r) >> (LPC_SCALE_FACTOR-1) ) +
- ( (fMultDiv2(ac.r01r,ac.r12i) - (FIXP_DBL)fMultDiv2(ac.r02i,ac.r11r)) >> (LPC_SCALE_FACTOR-1) ) ;
-
- absTmp = fixp_abs(tmp);
-
- /*
- Quick check: is second filter coeff >= 1(4)
- */
- {
- INT scale;
- FIXP_DBL result = fDivNorm(absTmp, absDet, &scale);
- scale = scale+ac.det_scale;
-
- if ( (scale > 0) && (result >= /*FL2FXCONST_DBL(1.f)*/ (FIXP_DBL)MAXVAL_DBL>>scale) ) {
- resetLPCCoeffs = 1;
- }
- else {
- alphai[1] = FX_DBL2FX_SGL(scaleValue(result,scale));
- if((tmp<FL2FX_DBL(0.0f)) ^ (ac.det<FL2FX_DBL(0.0f))) {
- alphai[1] = -alphai[1];
- }
- }
- }
- }
- }
-
- alphar[0] = FL2FXCONST_SGL(0.0f);
- if (!useLP)
- alphai[0] = FL2FXCONST_SGL(0.0f);
-
- if ( ac.r11r != FL2FXCONST_DBL(0.0f) ) {
-
- /* ac.r11r is always >=0 */
- FIXP_DBL tmp,absTmp;
-
- if (!useLP) {
- tmp = (ac.r01r>>(LPC_SCALE_FACTOR+1)) +
- (fMultDiv2(alphar[1],ac.r12r) + fMultDiv2(alphai[1],ac.r12i));
- } else
- {
- if(ac.r01r>=FL2FXCONST_DBL(0.0f))
- tmp = (ac.r01r>>(LPC_SCALE_FACTOR+1)) + fMultDiv2(alphar[1],ac.r12r);
- else
- tmp = -((-ac.r01r)>>(LPC_SCALE_FACTOR+1)) + fMultDiv2(alphar[1],ac.r12r);
- }
-
- absTmp = fixp_abs(tmp);
-
- /*
- Quick check: is first filter coeff >= 1(4)
- */
-
- if (absTmp >= (ac.r11r>>1)) {
- resetLPCCoeffs=1;
- }
- else {
- INT scale;
- FIXP_DBL result = fDivNorm(absTmp, fixp_abs(ac.r11r), &scale);
- alphar[0] = FX_DBL2FX_SGL(scaleValue(result,scale+1));
-
- if((tmp>FL2FX_DBL(0.0f)) ^ (ac.r11r<FL2FX_DBL(0.0f)))
- alphar[0] = -alphar[0];
- }
-
- if (!useLP)
- {
- tmp = (ac.r01i>>(LPC_SCALE_FACTOR+1)) +
- (fMultDiv2(alphai[1],ac.r12r) - fMultDiv2(alphar[1],ac.r12i));
-
- absTmp = fixp_abs(tmp);
-
- /*
- Quick check: is second filter coeff >= 1(4)
- */
- if (absTmp >= (ac.r11r>>1)) {
- resetLPCCoeffs=1;
- }
- else {
- INT scale;
- FIXP_DBL result = fDivNorm(absTmp, fixp_abs(ac.r11r), &scale);
- alphai[0] = FX_DBL2FX_SGL(scaleValue(result,scale+1));
- if((tmp>FL2FX_DBL(0.0f)) ^ (ac.r11r<FL2FX_DBL(0.0f)))
- alphai[0] = -alphai[0];
- }
- }
- }
-
-
- if (!useLP)
- {
- /* Now check the quadratic criteria */
- if( (fMultDiv2(alphar[0],alphar[0]) + fMultDiv2(alphai[0],alphai[0])) >= FL2FXCONST_DBL(0.5f) )
- resetLPCCoeffs=1;
- if( (fMultDiv2(alphar[1],alphar[1]) + fMultDiv2(alphai[1],alphai[1])) >= FL2FXCONST_DBL(0.5f) )
- resetLPCCoeffs=1;
- }
-
- if(resetLPCCoeffs){
- alphar[0] = FL2FXCONST_SGL(0.0f);
- alphar[1] = FL2FXCONST_SGL(0.0f);
- if (!useLP)
- {
- alphai[0] = FL2FXCONST_SGL(0.0f);
- alphai[1] = FL2FXCONST_SGL(0.0f);
- }
- }
-
- if (useLP)
- {
-
- /* Aliasing detection */
- if(ac.r11r==FL2FXCONST_DBL(0.0f)) {
- k1 = FL2FXCONST_DBL(0.0f);
- }
- else {
- if ( fixp_abs(ac.r01r) >= fixp_abs(ac.r11r) ) {
- if ( fMultDiv2(ac.r01r,ac.r11r) < FL2FX_DBL(0.0f)) {
- k1 = (FIXP_DBL)MAXVAL_DBL /*FL2FXCONST_SGL(1.0f)*/;
- }else {
- /* Since this value is squared later, it must not ever become -1.0f. */
- k1 = (FIXP_DBL)(MINVAL_DBL+1) /*FL2FXCONST_SGL(-1.0f)*/;
- }
- }
- else {
- INT scale;
- FIXP_DBL result = fDivNorm(fixp_abs(ac.r01r), fixp_abs(ac.r11r), &scale);
- k1 = scaleValue(result,scale);
-
- if(!((ac.r01r<FL2FX_DBL(0.0f)) ^ (ac.r11r<FL2FX_DBL(0.0f)))) {
- k1 = -k1;
- }
- }
- }
- if(loBand > 1){
- /* Check if the gain should be locked */
- FIXP_DBL deg = /*FL2FXCONST_DBL(1.0f)*/ (FIXP_DBL)MAXVAL_DBL - fPow2(k1_below);
- degreeAlias[loBand] = FL2FXCONST_DBL(0.0f);
- if (((loBand & 1) == 0) && (k1 < FL2FXCONST_DBL(0.0f))){
- if (k1_below < FL2FXCONST_DBL(0.0f)) { /* 2-Ch Aliasing Detection */
- degreeAlias[loBand] = (FIXP_DBL)MAXVAL_DBL /*FL2FXCONST_DBL(1.0f)*/;
- if ( k1_below2 > FL2FXCONST_DBL(0.0f) ) { /* 3-Ch Aliasing Detection */
- degreeAlias[loBand-1] = deg;
- }
- }
- else if ( k1_below2 > FL2FXCONST_DBL(0.0f) ) { /* 3-Ch Aliasing Detection */
- degreeAlias[loBand] = deg;
- }
- }
- if (((loBand & 1) == 1) && (k1 > FL2FXCONST_DBL(0.0f))){
- if (k1_below > FL2FXCONST_DBL(0.0f)) { /* 2-CH Aliasing Detection */
- degreeAlias[loBand] = (FIXP_DBL)MAXVAL_DBL /*FL2FXCONST_DBL(1.0f)*/;
- if ( k1_below2 < FL2FXCONST_DBL(0.0f) ) { /* 3-CH Aliasing Detection */
- degreeAlias[loBand-1] = deg;
- }
- }
- else if ( k1_below2 < FL2FXCONST_DBL(0.0f) ) { /* 3-CH Aliasing Detection */
- degreeAlias[loBand] = deg;
- }
- }
- }
- /* remember k1 values of the 2 QMF channels below the current channel */
- k1_below2 = k1_below;
- k1_below = k1;
- }
-
- patch = 0;
-
- while ( patch < pSettings->noOfPatches ) { /* inner loop over every patch */
-
- int hiBand = loBand + patchParam[patch].targetBandOffs;
-
- if ( loBand < patchParam[patch].sourceStartBand
- || loBand >= patchParam[patch].sourceStopBand
- //|| hiBand >= hLppTrans->pSettings->noChannels
- ) {
- /* Lowband not in current patch - proceed */
- patch++;
- continue;
- }
-
- FDK_ASSERT( hiBand < (64) );
-
- /* bwIndex[patch] is already initialized with value from previous band inside this patch */
- while (hiBand >= pSettings->bwBorders[bwIndex[patch]])
- bwIndex[patch]++;
-
-
- /*
- Filter Step 2: add the left slope with the current filter to the buffer
- pure source values are already in there
- */
- bw = FX_DBL2FX_SGL(bwVector[bwIndex[patch]]);
-
- a0r = FX_DBL2FX_SGL(fMult(bw,alphar[0])); /* Apply current bandwidth expansion factor */
-
-
- if (!useLP)
- a0i = FX_DBL2FX_SGL(fMult(bw,alphai[0]));
- bw = FX_DBL2FX_SGL(fPow2(bw));
- a1r = FX_DBL2FX_SGL(fMult(bw,alphar[1]));
- if (!useLP)
- a1i = FX_DBL2FX_SGL(fMult(bw,alphai[1]));
-
-
-
- /*
- Filter Step 3: insert the middle part which won't be windowed
- */
-
- if ( bw <= FL2FXCONST_SGL(0.0f) ) {
- if (!useLP) {
- int descale = fixMin(DFRACT_BITS-1, (LPC_SCALE_FACTOR+dynamicScale));
- for(i = startSample; i < stopSample; i++ ) {
- qmfBufferReal[i][hiBand] = lowBandReal[LPC_ORDER+i]>>descale;
- qmfBufferImag[i][hiBand] = lowBandImag[LPC_ORDER+i]>>descale;
- }
- } else
- {
- int descale = fixMin(DFRACT_BITS-1, (LPC_SCALE_FACTOR+dynamicScale));
- for(i = startSample; i < stopSample; i++ ) {
- qmfBufferReal[i][hiBand] = lowBandReal[LPC_ORDER+i]>>descale;
- }
- }
- }
- else { /* bw <= 0 */
-
- if (!useLP) {
- int descale = fixMin(DFRACT_BITS-1, (LPC_SCALE_FACTOR+dynamicScale));
-#ifdef FUNCTION_LPPTRANSPOSER_func1
- lppTransposer_func1(lowBandReal+LPC_ORDER+startSample,lowBandImag+LPC_ORDER+startSample,
- qmfBufferReal+startSample,qmfBufferImag+startSample,
- stopSample-startSample, (int) hiBand,
- dynamicScale,descale,
- a0r, a0i, a1r, a1i);
-#else
- for(i = startSample; i < stopSample; i++ ) {
- FIXP_DBL accu1, accu2;
-
- accu1 = (fMultDiv2(a0r,lowBandReal[LPC_ORDER+i-1]) - fMultDiv2(a0i,lowBandImag[LPC_ORDER+i-1]) +
- fMultDiv2(a1r,lowBandReal[LPC_ORDER+i-2]) - fMultDiv2(a1i,lowBandImag[LPC_ORDER+i-2]))>>dynamicScale;
- accu2 = (fMultDiv2(a0i,lowBandReal[LPC_ORDER+i-1]) + fMultDiv2(a0r,lowBandImag[LPC_ORDER+i-1]) +
- fMultDiv2(a1i,lowBandReal[LPC_ORDER+i-2]) + fMultDiv2(a1r,lowBandImag[LPC_ORDER+i-2]))>>dynamicScale;
-
- qmfBufferReal[i][hiBand] = (lowBandReal[LPC_ORDER+i]>>descale) + (accu1<<1);
- qmfBufferImag[i][hiBand] = (lowBandImag[LPC_ORDER+i]>>descale) + (accu2<<1);
- }
-#endif
- } else
- {
- int descale = fixMin(DFRACT_BITS-1, (LPC_SCALE_FACTOR+dynamicScale));
-
- FDK_ASSERT(dynamicScale >= 0);
- for(i = startSample; i < stopSample; i++ ) {
- FIXP_DBL accu1;
-
- accu1 = (fMultDiv2(a0r,lowBandReal[LPC_ORDER+i-1]) + fMultDiv2(a1r,lowBandReal[LPC_ORDER+i-2]))>>dynamicScale;
-
- qmfBufferReal[i][hiBand] = (lowBandReal[LPC_ORDER+i]>>descale) + (accu1<<1);
- }
- }
- } /* bw <= 0 */
-
- patch++;
-
- } /* inner loop over patches */
-
- /*
- * store the unmodified filter coefficients if there is
- * an overlapping envelope
- *****************************************************************/
-
-
- } /* outer loop over bands (loBand) */
-
- if (useLP)
- {
- for ( loBand = pSettings->lbStartPatching; loBand < pSettings->lbStopPatching; loBand++ ) {
- patch = 0;
- while ( patch < pSettings->noOfPatches ) {
-
- UCHAR hiBand = loBand + patchParam[patch].targetBandOffs;
-
- if ( loBand < patchParam[patch].sourceStartBand
- || loBand >= patchParam[patch].sourceStopBand
- || hiBand >= (64) /* Highband out of range (biterror) */
- ) {
- /* Lowband not in current patch or highband out of range (might be caused by biterrors)- proceed */
- patch++;
- continue;
- }
-
- if(hiBand != patchParam[patch].targetStartBand)
- degreeAlias[hiBand] = degreeAlias[loBand];
-
- patch++;
- }
- }/* end for loop */
- }
-
- for (i = 0; i < nInvfBands; i++ ) {
- hLppTrans->bwVectorOld[i] = bwVector[i];
- }
-
- /*
- set high band scale factor
- */
- sbrScaleFactor->hb_scale = comLowBandScale-(LPC_SCALE_FACTOR);
-
-}
-
-/*!
- *
- * \brief Initialize one low power transposer instance
- *
- *
- */
-SBR_ERROR
-createLppTransposer (HANDLE_SBR_LPP_TRANS hs, /*!< Handle of low power transposer */
- TRANSPOSER_SETTINGS *pSettings, /*!< Pointer to settings */
- const int highBandStartSb, /*!< ? */
- UCHAR *v_k_master, /*!< Master table */
- const int numMaster, /*!< Valid entries in master table */
- const int usb, /*!< Highband area stop subband */
- const int timeSlots, /*!< Number of time slots */
- const int nCols, /*!< Number of colums (codec qmf bank) */
- UCHAR *noiseBandTable, /*!< Mapping of SBR noise bands to QMF bands */
- const int noNoiseBands, /*!< Number of noise bands */
- UINT fs, /*!< Sample Frequency */
- const int chan, /*!< Channel number */
- const int overlap
- )
-{
- /* FB inverse filtering settings */
- hs->pSettings = pSettings;
-
- pSettings->nCols = nCols;
- pSettings->overlap = overlap;
-
- switch (timeSlots) {
-
- case 15:
- case 16:
- break;
-
- default:
- return SBRDEC_UNSUPPORTED_CONFIG; /* Unimplemented */
- }
-
- if (chan==0) {
- /* Init common data only once */
- hs->pSettings->nCols = nCols;
-
- return resetLppTransposer (hs,
- highBandStartSb,
- v_k_master,
- numMaster,
- noiseBandTable,
- noNoiseBands,
- usb,
- fs);
- }
- return SBRDEC_OK;
-}
-
-
-static int findClosestEntry(UCHAR goalSb, UCHAR *v_k_master, UCHAR numMaster, UCHAR direction)
-{
- int index;
-
- if( goalSb <= v_k_master[0] )
- return v_k_master[0];
-
- if( goalSb >= v_k_master[numMaster] )
- return v_k_master[numMaster];
-
- if(direction) {
- index = 0;
- while( v_k_master[index] < goalSb ) {
- index++;
- }
- } else {
- index = numMaster;
- while( v_k_master[index] > goalSb ) {
- index--;
- }
- }
-
- return v_k_master[index];
-}
-
-
-/*!
- *
- * \brief Reset memory for one lpp transposer instance
- *
- * \return SBRDEC_OK on success, SBRDEC_UNSUPPORTED_CONFIG on error
- */
-SBR_ERROR
-resetLppTransposer (HANDLE_SBR_LPP_TRANS hLppTrans, /*!< Handle of lpp transposer */
- UCHAR highBandStartSb, /*!< High band area: start subband */
- UCHAR *v_k_master, /*!< Master table */
- UCHAR numMaster, /*!< Valid entries in master table */
- UCHAR *noiseBandTable, /*!< Mapping of SBR noise bands to QMF bands */
- UCHAR noNoiseBands, /*!< Number of noise bands */
- UCHAR usb, /*!< High band area: stop subband */
- UINT fs /*!< SBR output sampling frequency */
- )
-{
- TRANSPOSER_SETTINGS *pSettings = hLppTrans->pSettings;
- PATCH_PARAM *patchParam = pSettings->patchParam;
-
- int i, patch;
- int targetStopBand;
- int sourceStartBand;
- int patchDistance;
- int numBandsInPatch;
-
- int lsb = v_k_master[0]; /* Start subband expressed in "non-critical" sampling terms*/
- int xoverOffset = highBandStartSb - lsb; /* Calculate distance in QMF bands between k0 and kx */
- int startFreqHz;
-
- int desiredBorder;
-
- usb = fixMin(usb, v_k_master[numMaster]); /* Avoid endless loops (compare with float code). */
-
- /*
- * Plausibility check
- */
-
- if ( lsb - SHIFT_START_SB < 4 ) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
-
- /*
- * Initialize the patching parameter
- */
- /* ISO/IEC 14496-3 (Figure 4.48): goalSb = round( 2.048e6 / fs ) */
- desiredBorder = (((2048000*2) / fs) + 1) >> 1;
-
- desiredBorder = findClosestEntry(desiredBorder, v_k_master, numMaster, 1); /* Adapt region to master-table */
-
- /* First patch */
- sourceStartBand = SHIFT_START_SB + xoverOffset;
- targetStopBand = lsb + xoverOffset; /* upperBand */
-
- /* Even (odd) numbered channel must be patched to even (odd) numbered channel */
- patch = 0;
- while(targetStopBand < usb) {
-
- /* Too many patches?
- Allow MAX_NUM_PATCHES+1 patches here.
- we need to check later again, since patch might be the highest patch
- AND contain less than 3 bands => actual number of patches will be reduced by 1.
- */
- if (patch > MAX_NUM_PATCHES) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- patchParam[patch].guardStartBand = targetStopBand;
- patchParam[patch].targetStartBand = targetStopBand;
-
- numBandsInPatch = desiredBorder - targetStopBand; /* Get the desired range of the patch */
-
- if ( numBandsInPatch >= lsb - sourceStartBand ) {
- /* Desired number bands are not available -> patch whole source range */
- patchDistance = targetStopBand - sourceStartBand; /* Get the targetOffset */
- patchDistance = patchDistance & ~1; /* Rounding off odd numbers and make all even */
- numBandsInPatch = lsb - (targetStopBand - patchDistance); /* Update number of bands to be patched */
- numBandsInPatch = findClosestEntry(targetStopBand + numBandsInPatch, v_k_master, numMaster, 0) -
- targetStopBand; /* Adapt region to master-table */
- }
-
- /* Desired number bands are available -> get the minimal even patching distance */
- patchDistance = numBandsInPatch + targetStopBand - lsb; /* Get minimal distance */
- patchDistance = (patchDistance + 1) & ~1; /* Rounding up odd numbers and make all even */
-
- if (numBandsInPatch > 0) {
- patchParam[patch].sourceStartBand = targetStopBand - patchDistance;
- patchParam[patch].targetBandOffs = patchDistance;
- patchParam[patch].numBandsInPatch = numBandsInPatch;
- patchParam[patch].sourceStopBand = patchParam[patch].sourceStartBand + numBandsInPatch;
-
- targetStopBand += patchParam[patch].numBandsInPatch;
- patch++;
- }
-
- /* All patches but first */
- sourceStartBand = SHIFT_START_SB;
-
- /* Check if we are close to desiredBorder */
- if( desiredBorder - targetStopBand < 3) /* MPEG doc */
- {
- desiredBorder = usb;
- }
-
- }
-
- patch--;
-
- /* If highest patch contains less than three subband: skip it */
- if ( (patch>0) && (patchParam[patch].numBandsInPatch < 3) ) {
- patch--;
- targetStopBand = patchParam[patch].targetStartBand + patchParam[patch].numBandsInPatch;
- }
-
- /* now check if we don't have one too many */
- if (patch >= MAX_NUM_PATCHES) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- pSettings->noOfPatches = patch + 1;
-
- /* Check lowest and highest source subband */
- pSettings->lbStartPatching = targetStopBand;
- pSettings->lbStopPatching = 0;
- for ( patch = 0; patch < pSettings->noOfPatches; patch++ ) {
- pSettings->lbStartPatching = fixMin( pSettings->lbStartPatching, patchParam[patch].sourceStartBand );
- pSettings->lbStopPatching = fixMax( pSettings->lbStopPatching, patchParam[patch].sourceStopBand );
- }
-
- for(i = 0 ; i < noNoiseBands; i++){
- pSettings->bwBorders[i] = noiseBandTable[i+1];
- }
-
- /*
- * Choose whitening factors
- */
-
- startFreqHz = ( (lsb + xoverOffset)*fs ) >> 7; /* Shift does a division by 2*(64) */
-
- for( i = 1; i < NUM_WHFACTOR_TABLE_ENTRIES; i++ )
- {
- if( startFreqHz < FDK_sbrDecoder_sbr_whFactorsIndex[i])
- break;
- }
- i--;
-
- pSettings->whFactors.off = FDK_sbrDecoder_sbr_whFactorsTable[i][0];
- pSettings->whFactors.transitionLevel = FDK_sbrDecoder_sbr_whFactorsTable[i][1];
- pSettings->whFactors.lowLevel = FDK_sbrDecoder_sbr_whFactorsTable[i][2];
- pSettings->whFactors.midLevel = FDK_sbrDecoder_sbr_whFactorsTable[i][3];
- pSettings->whFactors.highLevel = FDK_sbrDecoder_sbr_whFactorsTable[i][4];
-
- return SBRDEC_OK;
-}
diff --git a/libSBRdec/src/lpp_tran.h b/libSBRdec/src/lpp_tran.h
deleted file mode 100644
index 003a547..0000000
--- a/libSBRdec/src/lpp_tran.h
+++ /dev/null
@@ -1,242 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Low Power Profile Transposer,
-*/
-
-#ifndef _LPP_TRANS_H
-#define _LPP_TRANS_H
-
-#include "sbrdecoder.h"
-#include "qmf.h"
-
-/*
- Common
-*/
-#define QMF_OUT_SCALE 8
-
-/*
- Env-Adjust
-*/
-#define MAX_NOISE_ENVELOPES 2
-#define MAX_NOISE_COEFFS 5
-#define MAX_NUM_NOISE_VALUES (MAX_NOISE_ENVELOPES * MAX_NOISE_COEFFS)
-#define MAX_NUM_LIMITERS 12
-
-/* Set MAX_ENVELOPES to the largest value of all supported BSFORMATs
- by overriding MAX_ENVELOPES in the correct order: */
-#define MAX_ENVELOPES_HEAAC 5
-#define MAX_ENVELOPES MAX_ENVELOPES_HEAAC
-
-#define MAX_FREQ_COEFFS 48
-#define MAX_FREQ_COEFFS_FS44100 35
-#define MAX_FREQ_COEFFS_FS48000 32
-
-
-#define MAX_NUM_ENVELOPE_VALUES (MAX_ENVELOPES * MAX_FREQ_COEFFS)
-
-#define MAX_GAIN_EXP 34
-/* Maximum gain will be sqrt(0.5 * 2^MAX_GAIN_EXP)
- example: 34=99dB */
-#define MAX_GAIN_CONCEAL_EXP 1
-/* Maximum gain will be sqrt(0.5 * 2^MAX_GAIN_CONCEAL_EXP) in concealment case (0dB) */
-
-/*
- LPP Transposer
-*/
-#define LPC_ORDER 2
-
-#define MAX_INVF_BANDS MAX_NOISE_COEFFS
-
-#define MAX_NUM_PATCHES 6
-#define SHIFT_START_SB 1 /*!< lowest subband of source range */
-
-typedef enum
-{
- INVF_OFF = 0,
- INVF_LOW_LEVEL,
- INVF_MID_LEVEL,
- INVF_HIGH_LEVEL,
- INVF_SWITCHED /* not a real choice but used here to control behaviour */
-}
-INVF_MODE;
-
-
-/** parameter set for one single patch */
-typedef struct {
- UCHAR sourceStartBand; /*!< first band in lowbands where to take the samples from */
- UCHAR sourceStopBand; /*!< first band in lowbands which is not included in the patch anymore */
- UCHAR guardStartBand; /*!< first band in highbands to be filled with zeros in order to
- reduce interferences between patches */
- UCHAR targetStartBand; /*!< first band in highbands to be filled with whitened lowband signal */
- UCHAR targetBandOffs; /*!< difference between 'startTargetBand' and 'startSourceBand' */
- UCHAR numBandsInPatch; /*!< number of consecutive bands in this one patch */
-} PATCH_PARAM;
-
-
-/** whitening factors for different levels of whitening
- need to be initialized corresponding to crossover frequency */
-typedef struct {
- FIXP_DBL off; /*!< bw factor for signal OFF */
- FIXP_DBL transitionLevel;
- FIXP_DBL lowLevel; /*!< bw factor for signal LOW_LEVEL */
- FIXP_DBL midLevel; /*!< bw factor for signal MID_LEVEL */
- FIXP_DBL highLevel; /*!< bw factor for signal HIGH_LEVEL */
-} WHITENING_FACTORS;
-
-
-/*! The transposer settings are calculated on a header reset and are shared by both channels. */
-typedef struct {
- UCHAR nCols; /*!< number subsamples of a codec frame */
- UCHAR noOfPatches; /*!< number of patches */
- UCHAR lbStartPatching; /*!< first band of lowbands that will be patched */
- UCHAR lbStopPatching; /*!< first band that won't be patched anymore*/
- UCHAR bwBorders[MAX_NUM_NOISE_VALUES]; /*!< spectral bands with different inverse filtering levels */
-
- PATCH_PARAM patchParam[MAX_NUM_PATCHES]; /*!< new parameter set for patching */
- WHITENING_FACTORS whFactors; /*!< the pole moving factors for certain whitening levels as indicated
- in the bitstream depending on the crossover frequency */
- UCHAR overlap; /*!< Overlap size */
-} TRANSPOSER_SETTINGS;
-
-
-typedef struct
-{
- TRANSPOSER_SETTINGS *pSettings; /*!< Common settings for both channels */
- FIXP_DBL bwVectorOld[MAX_NUM_PATCHES]; /*!< pole moving factors of past frame */
- FIXP_DBL lpcFilterStatesReal[LPC_ORDER][(32)]; /*!< pointer array to save filter states */
- FIXP_DBL lpcFilterStatesImag[LPC_ORDER][(32)]; /*!< pointer array to save filter states */
-}
-SBR_LPP_TRANS;
-
-typedef SBR_LPP_TRANS *HANDLE_SBR_LPP_TRANS;
-
-
-void lppTransposer (HANDLE_SBR_LPP_TRANS hLppTrans,
- QMF_SCALE_FACTOR *sbrScaleFactor,
- FIXP_DBL **qmfBufferReal,
-
- FIXP_DBL *degreeAlias,
- FIXP_DBL **qmfBufferImag,
- const int useLP,
- const int timeStep,
- const int firstSlotOffset,
- const int lastSlotOffset,
- const int nInvfBands,
- INVF_MODE *sbr_invf_mode,
- INVF_MODE *sbr_invf_mode_prev
- );
-
-
-SBR_ERROR
-createLppTransposer (HANDLE_SBR_LPP_TRANS hLppTrans,
- TRANSPOSER_SETTINGS *pSettings,
- const int highBandStartSb,
- UCHAR *v_k_master,
- const int numMaster,
- const int usb,
- const int timeSlots,
- const int nCols,
- UCHAR *noiseBandTable,
- const int noNoiseBands,
- UINT fs,
- const int chan,
- const int overlap);
-
-
-SBR_ERROR
-resetLppTransposer (HANDLE_SBR_LPP_TRANS hLppTrans,
- UCHAR highBandStartSb,
- UCHAR *v_k_master,
- UCHAR numMaster,
- UCHAR *noiseBandTable,
- UCHAR noNoiseBands,
- UCHAR usb,
- UINT fs);
-
-
-
-#endif /* _LPP_TRANS_H */
-
diff --git a/libSBRdec/src/psbitdec.cpp b/libSBRdec/src/psbitdec.cpp
deleted file mode 100644
index 29bddf7..0000000
--- a/libSBRdec/src/psbitdec.cpp
+++ /dev/null
@@ -1,593 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-#include "psbitdec.h"
-
-
-#include "sbr_rom.h"
-#include "huff_dec.h"
-
-/* PS dec privat functions */
-SBR_ERROR ResetPsDec(HANDLE_PS_DEC h_ps_d);
-void ResetPsDeCor (HANDLE_PS_DEC h_ps_d);
-
-/***************************************************************************/
-/*!
- \brief huffman decoding by codebook table
-
- \return index of huffman codebook table
-
-****************************************************************************/
-static SCHAR
-decode_huff_cw (Huffman h, /*!< pointer to huffman codebook table */
- HANDLE_FDK_BITSTREAM hBitBuf, /*!< Handle to Bitbuffer */
- int *length) /*!< length of huffman codeword (or NULL) */
-{
- UCHAR bit = 0;
- SCHAR index = 0;
- UCHAR bitCount = 0;
-
- while (index >= 0) {
- bit = FDKreadBits (hBitBuf, 1);
- bitCount++;
- index = h[index][bit];
- }
- if (length) {
- *length = bitCount;
- }
- return( index+64 ); /* Add offset */
-}
-
-/***************************************************************************/
-/*!
- \brief helper function - limiting of value to min/max values
-
- \return limited value
-
-****************************************************************************/
-
-static SCHAR
-limitMinMax(SCHAR i,
- SCHAR min,
- SCHAR max)
-{
- if (i<min)
- return min;
- else if (i>max)
- return max;
- else
- return i;
-}
-
-/***************************************************************************/
-/*!
- \brief Decodes delta values in-place and updates
- data buffers according to quantization classes.
-
- When delta coded in frequency the first element is deltacode from zero.
- aIndex buffer is decoded from delta values to actual values.
-
- \return none
-
-****************************************************************************/
-static void
-deltaDecodeArray(SCHAR enable,
- SCHAR *aIndex, /*!< ICC/IID parameters */
- SCHAR *aPrevFrameIndex, /*!< ICC/IID parameters of previous frame */
- SCHAR DtDf,
- UCHAR nrElements, /*!< as conveyed in bitstream */
- /*!< output array size: nrElements*stride */
- UCHAR stride, /*!< 1=dflt, 2=half freq. resolution */
- SCHAR minIdx,
- SCHAR maxIdx)
-{
- int i;
-
- /* Delta decode */
- if ( enable==1 ) {
- if (DtDf == 0) { /* Delta coded in freq */
- aIndex[0] = 0 + aIndex[0];
- aIndex[0] = limitMinMax(aIndex[0],minIdx,maxIdx);
- for (i = 1; i < nrElements; i++) {
- aIndex[i] = aIndex[i-1] + aIndex[i];
- aIndex[i] = limitMinMax(aIndex[i],minIdx,maxIdx);
- }
- }
- else { /* Delta time */
- for (i = 0; i < nrElements; i++) {
- aIndex[i] = aPrevFrameIndex[i*stride] + aIndex[i];
- aIndex[i] = limitMinMax(aIndex[i],minIdx,maxIdx);
- }
- }
- }
- else { /* No data is sent, set index to zero */
- for (i = 0; i < nrElements; i++) {
- aIndex[i] = 0;
- }
- }
- if (stride==2) {
- for (i=nrElements*stride-1; i>0; i--) {
- aIndex[i] = aIndex[i>>1];
- }
- }
-}
-
-/***************************************************************************/
-/*!
- \brief Mapping of ICC/IID parameters to 20 stereo bands
-
- \return none
-
-****************************************************************************/
-static void map34IndexTo20 (SCHAR *aIndex, /*!< decoded ICC/IID parameters */
- UCHAR noBins) /*!< number of stereo bands */
-{
- aIndex[0] = (2*aIndex[0]+aIndex[1])/3;
- aIndex[1] = (aIndex[1]+2*aIndex[2])/3;
- aIndex[2] = (2*aIndex[3]+aIndex[4])/3;
- aIndex[3] = (aIndex[4]+2*aIndex[5])/3;
- aIndex[4] = (aIndex[6]+aIndex[7])/2;
- aIndex[5] = (aIndex[8]+aIndex[9])/2;
- aIndex[6] = aIndex[10];
- aIndex[7] = aIndex[11];
- aIndex[8] = (aIndex[12]+aIndex[13])/2;
- aIndex[9] = (aIndex[14]+aIndex[15])/2;
- aIndex[10] = aIndex[16];
- /* For IPD/OPD it stops here */
-
- if (noBins == NO_HI_RES_BINS)
- {
- aIndex[11] = aIndex[17];
- aIndex[12] = aIndex[18];
- aIndex[13] = aIndex[19];
- aIndex[14] = (aIndex[20]+aIndex[21])/2;
- aIndex[15] = (aIndex[22]+aIndex[23])/2;
- aIndex[16] = (aIndex[24]+aIndex[25])/2;
- aIndex[17] = (aIndex[26]+aIndex[27])/2;
- aIndex[18] = (aIndex[28]+aIndex[29]+aIndex[30]+aIndex[31])/4;
- aIndex[19] = (aIndex[32]+aIndex[33])/2;
- }
-}
-
-/***************************************************************************/
-/*!
- \brief Decodes delta coded IID, ICC, IPD and OPD indices
-
- \return PS processing flag. If set to 1
-
-****************************************************************************/
-int
-DecodePs( struct PS_DEC *h_ps_d, /*!< PS handle */
- const UCHAR frameError ) /*!< Flag telling that frame had errors */
-{
- MPEG_PS_BS_DATA *pBsData;
- UCHAR gr, env;
- int bPsHeaderValid, bPsDataAvail;
-
- /* Shortcuts to avoid deferencing and keep the code readable */
- pBsData = &h_ps_d->bsData[h_ps_d->processSlot].mpeg;
- bPsHeaderValid = pBsData->bPsHeaderValid;
- bPsDataAvail = (h_ps_d->bPsDataAvail[h_ps_d->processSlot] == ppt_mpeg) ? 1 : 0;
-
- /***************************************************************************************
- * Decide whether to process or to conceal PS data or not. */
-
- if ( ( h_ps_d->psDecodedPrv && !frameError && !bPsDataAvail)
- || (!h_ps_d->psDecodedPrv && (frameError || !bPsDataAvail || !bPsHeaderValid)) ) {
- /* Don't apply PS processing.
- * Declare current PS header and bitstream data invalid. */
- pBsData->bPsHeaderValid = 0;
- h_ps_d->bPsDataAvail[h_ps_d->processSlot] = ppt_none;
- return (0);
- }
-
- if (frameError || !bPsHeaderValid)
- { /* no new PS data available (e.g. frame loss) */
- /* => keep latest data constant (i.e. FIX with noEnv=0) */
- pBsData->noEnv = 0;
- }
-
- /***************************************************************************************
- * Decode bitstream payload or prepare parameter for concealment:
- */
- for (env=0; env<pBsData->noEnv; env++) {
- SCHAR *aPrevIidIndex;
- SCHAR *aPrevIccIndex;
-
- UCHAR noIidSteps = pBsData->bFineIidQ?NO_IID_STEPS_FINE:NO_IID_STEPS;
-
- if (env==0) {
- aPrevIidIndex = h_ps_d->specificTo.mpeg.aIidPrevFrameIndex;
- aPrevIccIndex = h_ps_d->specificTo.mpeg.aIccPrevFrameIndex;
- }
- else {
- aPrevIidIndex = pBsData->aaIidIndex[env-1];
- aPrevIccIndex = pBsData->aaIccIndex[env-1];
- }
-
- deltaDecodeArray(pBsData->bEnableIid,
- pBsData->aaIidIndex[env],
- aPrevIidIndex,
- pBsData->abIidDtFlag[env],
- FDK_sbrDecoder_aNoIidBins[pBsData->freqResIid],
- (pBsData->freqResIid)?1:2,
- -noIidSteps,
- noIidSteps);
-
- deltaDecodeArray(pBsData->bEnableIcc,
- pBsData->aaIccIndex[env],
- aPrevIccIndex,
- pBsData->abIccDtFlag[env],
- FDK_sbrDecoder_aNoIccBins[pBsData->freqResIcc],
- (pBsData->freqResIcc)?1:2,
- 0,
- NO_ICC_STEPS-1);
- } /* for (env=0; env<pBsData->noEnv; env++) */
-
- /* handling of FIX noEnv=0 */
- if (pBsData->noEnv==0) {
- /* set noEnv=1, keep last parameters or force 0 if not enabled */
- pBsData->noEnv = 1;
-
- if (pBsData->bEnableIid) {
- for (gr = 0; gr < NO_HI_RES_IID_BINS; gr++) {
- pBsData->aaIidIndex[pBsData->noEnv-1][gr] =
- h_ps_d->specificTo.mpeg.aIidPrevFrameIndex[gr];
- }
- }
- else {
- for (gr = 0; gr < NO_HI_RES_IID_BINS; gr++) {
- pBsData->aaIidIndex[pBsData->noEnv-1][gr] = 0;
- }
- }
-
- if (pBsData->bEnableIcc) {
- for (gr = 0; gr < NO_HI_RES_ICC_BINS; gr++) {
- pBsData->aaIccIndex[pBsData->noEnv-1][gr] =
- h_ps_d->specificTo.mpeg.aIccPrevFrameIndex[gr];
- }
- }
- else {
- for (gr = 0; gr < NO_HI_RES_ICC_BINS; gr++) {
- pBsData->aaIccIndex[pBsData->noEnv-1][gr] = 0;
- }
- }
- }
-
- /* Update previous frame index buffers */
- for (gr = 0; gr < NO_HI_RES_IID_BINS; gr++) {
- h_ps_d->specificTo.mpeg.aIidPrevFrameIndex[gr] =
- pBsData->aaIidIndex[pBsData->noEnv-1][gr];
- }
- for (gr = 0; gr < NO_HI_RES_ICC_BINS; gr++) {
- h_ps_d->specificTo.mpeg.aIccPrevFrameIndex[gr] =
- pBsData->aaIccIndex[pBsData->noEnv-1][gr];
- }
-
- /* PS data from bitstream (if avail) was decoded now */
- h_ps_d->bPsDataAvail[h_ps_d->processSlot] = ppt_none;
-
- /* handling of env borders for FIX & VAR */
- if (pBsData->bFrameClass == 0) {
- /* FIX_BORDERS NoEnv=0,1,2,4 */
- pBsData->aEnvStartStop[0] = 0;
- for (env=1; env<pBsData->noEnv; env++) {
- pBsData->aEnvStartStop[env] =
- (env * h_ps_d->noSubSamples) / pBsData->noEnv;
- }
- pBsData->aEnvStartStop[pBsData->noEnv] = h_ps_d->noSubSamples;
- /* 1024 (32 slots) env borders: 0, 8, 16, 24, 32 */
- /* 960 (30 slots) env borders: 0, 7, 15, 22, 30 */
- }
- else { /* if (h_ps_d->bFrameClass == 0) */
- /* VAR_BORDERS NoEnv=1,2,3,4 */
- pBsData->aEnvStartStop[0] = 0;
-
- /* handle case aEnvStartStop[noEnv]<noSubSample for VAR_BORDERS by
- duplicating last PS parameters and incrementing noEnv */
- if (pBsData->aEnvStartStop[pBsData->noEnv] < h_ps_d->noSubSamples) {
- for (gr = 0; gr < NO_HI_RES_IID_BINS; gr++) {
- pBsData->aaIidIndex[pBsData->noEnv][gr] =
- pBsData->aaIidIndex[pBsData->noEnv-1][gr];
- }
- for (gr = 0; gr < NO_HI_RES_ICC_BINS; gr++) {
- pBsData->aaIccIndex[pBsData->noEnv][gr] =
- pBsData->aaIccIndex[pBsData->noEnv-1][gr];
- }
- pBsData->noEnv++;
- pBsData->aEnvStartStop[pBsData->noEnv] = h_ps_d->noSubSamples;
- }
-
- /* enforce strictly monotonic increasing borders */
- for (env=1; env<pBsData->noEnv; env++) {
- UCHAR thr;
- thr = (UCHAR)h_ps_d->noSubSamples - (pBsData->noEnv - env);
- if (pBsData->aEnvStartStop[env] > thr) {
- pBsData->aEnvStartStop[env] = thr;
- }
- else {
- thr = pBsData->aEnvStartStop[env-1]+1;
- if (pBsData->aEnvStartStop[env] < thr) {
- pBsData->aEnvStartStop[env] = thr;
- }
- }
- }
- } /* if (h_ps_d->bFrameClass == 0) ... else */
-
- /* copy data prior to possible 20<->34 in-place mapping */
- for (env=0; env<pBsData->noEnv; env++) {
- UCHAR i;
- for (i=0; i<NO_HI_RES_IID_BINS; i++) {
- h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][i] = pBsData->aaIidIndex[env][i];
- }
- for (i=0; i<NO_HI_RES_ICC_BINS; i++) {
- h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env][i] = pBsData->aaIccIndex[env][i];
- }
- }
-
-
- /* MPEG baseline PS */
- /* Baseline version of PS always uses the hybrid filter structure with 20 stereo bands. */
- /* If ICC/IID parameters for 34 stereo bands are decoded they have to be mapped to 20 */
- /* stereo bands. */
- /* Additionaly the IPD/OPD parameters won't be used. */
-
- for (env=0; env<pBsData->noEnv; env++) {
- if (pBsData->freqResIid == 2)
- map34IndexTo20 (h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env], NO_HI_RES_IID_BINS);
- if (pBsData->freqResIcc == 2)
- map34IndexTo20 (h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env], NO_HI_RES_ICC_BINS);
-
- /* IPD/OPD is disabled in baseline version and thus was removed here */
- }
-
- return (1);
-}
-
-
-/***************************************************************************/
-/*!
-
- \brief Reads parametric stereo data from bitstream
-
- \return
-
-****************************************************************************/
-unsigned int
-ReadPsData (HANDLE_PS_DEC h_ps_d, /*!< handle to struct PS_DEC */
- HANDLE_FDK_BITSTREAM hBitBuf, /*!< handle to struct BIT_BUF */
- int nBitsLeft /*!< max number of bits available */
- )
-{
- MPEG_PS_BS_DATA *pBsData;
-
- UCHAR gr, env;
- SCHAR dtFlag;
- INT startbits;
- Huffman CurrentTable;
- SCHAR bEnableHeader;
-
- if (!h_ps_d)
- return 0;
-
- pBsData = &h_ps_d->bsData[h_ps_d->bsReadSlot].mpeg;
-
- if (h_ps_d->bsReadSlot != h_ps_d->bsLastSlot) {
- /* Copy last header data */
- FDKmemcpy(pBsData, &h_ps_d->bsData[h_ps_d->bsLastSlot].mpeg, sizeof(MPEG_PS_BS_DATA));
- }
-
-
- startbits = (INT) FDKgetValidBits(hBitBuf);
-
- bEnableHeader = (SCHAR) FDKreadBits (hBitBuf, 1);
-
- /* Read header */
- if (bEnableHeader) {
- pBsData->bPsHeaderValid = 1;
- pBsData->bEnableIid = (UCHAR) FDKreadBits (hBitBuf, 1);
- if (pBsData->bEnableIid) {
- pBsData->modeIid = (UCHAR) FDKreadBits (hBitBuf, 3);
- }
-
- pBsData->bEnableIcc = (UCHAR) FDKreadBits (hBitBuf, 1);
- if (pBsData->bEnableIcc) {
- pBsData->modeIcc = (UCHAR) FDKreadBits (hBitBuf, 3);
- }
-
- pBsData->bEnableExt = (UCHAR) FDKreadBits (hBitBuf, 1);
- }
-
- pBsData->bFrameClass = (UCHAR) FDKreadBits (hBitBuf, 1);
- if (pBsData->bFrameClass == 0) {
- /* FIX_BORDERS NoEnv=0,1,2,4 */
- pBsData->noEnv = FDK_sbrDecoder_aFixNoEnvDecode[(UCHAR) FDKreadBits (hBitBuf, 2)];
- /* all additional handling of env borders is now in DecodePs() */
- }
- else {
- /* VAR_BORDERS NoEnv=1,2,3,4 */
- pBsData->noEnv = 1+(UCHAR) FDKreadBits (hBitBuf, 2);
- for (env=1; env<pBsData->noEnv+1; env++)
- pBsData->aEnvStartStop[env] = ((UCHAR) FDKreadBits (hBitBuf, 5)) + 1;
- /* all additional handling of env borders is now in DecodePs() */
- }
-
- /* verify that IID & ICC modes (quant grid, freq res) are supported */
- if ((pBsData->modeIid > 5) || (pBsData->modeIcc > 5)) {
- /* no useful PS data could be read from bitstream */
- h_ps_d->bPsDataAvail[h_ps_d->bsReadSlot] = ppt_none;
- /* discard all remaining bits */
- nBitsLeft -= startbits - FDKgetValidBits(hBitBuf);
- while (nBitsLeft) {
- int i = nBitsLeft;
- if (i>8) {
- i = 8;
- }
- FDKreadBits (hBitBuf, i);
- nBitsLeft -= i;
- }
- return (startbits - FDKgetValidBits(hBitBuf));
- }
-
- if (pBsData->modeIid > 2){
- pBsData->freqResIid = pBsData->modeIid-3;
- pBsData->bFineIidQ = 1;
- }
- else{
- pBsData->freqResIid = pBsData->modeIid;
- pBsData->bFineIidQ = 0;
- }
-
- if (pBsData->modeIcc > 2){
- pBsData->freqResIcc = pBsData->modeIcc-3;
- }
- else{
- pBsData->freqResIcc = pBsData->modeIcc;
- }
-
-
- /* Extract IID data */
- if (pBsData->bEnableIid) {
- for (env=0; env<pBsData->noEnv; env++) {
- dtFlag = (SCHAR)FDKreadBits (hBitBuf, 1);
- if (!dtFlag)
- {
- if (pBsData->bFineIidQ)
- CurrentTable = (Huffman)&aBookPsIidFineFreqDecode;
- else
- CurrentTable = (Huffman)&aBookPsIidFreqDecode;
- }
- else
- {
- if (pBsData->bFineIidQ)
- CurrentTable = (Huffman)&aBookPsIidFineTimeDecode;
- else
- CurrentTable = (Huffman)&aBookPsIidTimeDecode;
- }
-
- for (gr = 0; gr < FDK_sbrDecoder_aNoIidBins[pBsData->freqResIid]; gr++)
- pBsData->aaIidIndex[env][gr] = decode_huff_cw(CurrentTable,hBitBuf,NULL);
- pBsData->abIidDtFlag[env] = dtFlag;
- }
- }
-
- /* Extract ICC data */
- if (pBsData->bEnableIcc) {
- for (env=0; env<pBsData->noEnv; env++) {
- dtFlag = (SCHAR)FDKreadBits (hBitBuf, 1);
- if (!dtFlag)
- CurrentTable = (Huffman)&aBookPsIccFreqDecode;
- else
- CurrentTable = (Huffman)&aBookPsIccTimeDecode;
-
- for (gr = 0; gr < FDK_sbrDecoder_aNoIccBins[pBsData->freqResIcc]; gr++)
- pBsData->aaIccIndex[env][gr] = decode_huff_cw(CurrentTable,hBitBuf,NULL);
- pBsData->abIccDtFlag[env] = dtFlag;
- }
- }
-
- if (pBsData->bEnableExt) {
-
- /*!
- Decoders that support only the baseline version of the PS tool are allowed
- to ignore the IPD/OPD data, but according header data has to be parsed.
- ISO/IEC 14496-3 Subpart 8 Annex 4
- */
-
- int cnt = FDKreadBits(hBitBuf, PS_EXTENSION_SIZE_BITS);
- if (cnt == (1<<PS_EXTENSION_SIZE_BITS)-1) {
- cnt += FDKreadBits(hBitBuf, PS_EXTENSION_ESC_COUNT_BITS);
- }
- while (cnt--)
- FDKreadBits(hBitBuf, 8);
- }
-
-
- /* new PS data was read from bitstream */
- h_ps_d->bPsDataAvail[h_ps_d->bsReadSlot] = ppt_mpeg;
-
-
-
- return (startbits - FDKgetValidBits(hBitBuf));
-}
-
diff --git a/libSBRdec/src/psbitdec.h b/libSBRdec/src/psbitdec.h
deleted file mode 100644
index a2d4d6c..0000000
--- a/libSBRdec/src/psbitdec.h
+++ /dev/null
@@ -1,103 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-#ifndef __PSBITDEC_H
-#define __PSBITDEC_H
-
-#include "sbrdecoder.h"
-
-
-#include "psdec.h"
-
-
-unsigned int
-ReadPsData (struct PS_DEC *h_ps_d,
- HANDLE_FDK_BITSTREAM hBs,
- int nBitsLeft);
-
-int
-DecodePs(struct PS_DEC *h_ps_d,
- const UCHAR frameError);
-
-
-#endif /* __PSBITDEC_H */
diff --git a/libSBRdec/src/psdec.cpp b/libSBRdec/src/psdec.cpp
deleted file mode 100644
index 965917a..0000000
--- a/libSBRdec/src/psdec.cpp
+++ /dev/null
@@ -1,1414 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief parametric stereo decoder
-*/
-
-#include "psdec.h"
-
-
-
-#include "FDK_bitbuffer.h"
-#include "psdec_hybrid.h"
-
-#include "sbr_rom.h"
-#include "sbr_ram.h"
-
-#include "FDK_tools_rom.h"
-
-#include "genericStds.h"
-
-#include "FDK_trigFcts.h"
-
-
-/********************************************************************/
-/* MLQUAL DEFINES */
-/********************************************************************/
-
- #define FRACT_ZERO FRACT_BITS-1
-/********************************************************************/
-
-SBR_ERROR ResetPsDec( HANDLE_PS_DEC h_ps_d );
-
-void ResetPsDeCor( HANDLE_PS_DEC h_ps_d );
-
-
-/***** HELPERS *****/
-
-static void assignTimeSlotsPS (FIXP_DBL *bufAdr, FIXP_DBL **bufPtr, const int numSlots, const int numChan);
-
-
-
-/*******************/
-
-#define DIV3 FL2FXCONST_DBL(1.f/3.f) /* division 3.0 */
-#define DIV1_5 FL2FXCONST_DBL(2.f/3.f) /* division 1.5 */
-
-/***************************************************************************/
-/*!
- \brief Creates one instance of the PS_DEC struct
-
- \return Error info
-
-****************************************************************************/
-int
-CreatePsDec( HANDLE_PS_DEC *h_PS_DEC, /*!< pointer to the module state */
- int aacSamplesPerFrame
- )
-{
- SBR_ERROR errorInfo = SBRDEC_OK;
- HANDLE_PS_DEC h_ps_d;
- int i;
-
- if (*h_PS_DEC == NULL) {
- /* Get ps dec ram */
- h_ps_d = GetRam_ps_dec();
- if (h_ps_d == NULL) {
- errorInfo = SBRDEC_MEM_ALLOC_FAILED;
- goto bail;
- }
- } else {
- /* Reset an open instance */
- h_ps_d = *h_PS_DEC;
- }
-
- /* initialisation */
- switch (aacSamplesPerFrame) {
- case 960:
- h_ps_d->noSubSamples = 30; /* col */
- break;
- case 1024:
- h_ps_d->noSubSamples = 32; /* col */
- break;
- default:
- h_ps_d->noSubSamples = -1;
- break;
- }
-
- if (h_ps_d->noSubSamples > MAX_NUM_COL
- || h_ps_d->noSubSamples <= 0)
- {
- goto bail;
- }
- h_ps_d->noChannels = NO_QMF_CHANNELS; /* row */
-
- h_ps_d->psDecodedPrv = 0;
- h_ps_d->procFrameBased = -1;
- for (i = 0; i < (1)+1; i++) {
- h_ps_d->bPsDataAvail[i] = ppt_none;
- }
-
-
- for (i = 0; i < (1)+1; i++) {
- FDKmemclear(&h_ps_d->bsData[i].mpeg, sizeof(MPEG_PS_BS_DATA));
- }
-
- errorInfo = ResetPsDec( h_ps_d );
-
- if ( errorInfo != SBRDEC_OK )
- goto bail;
-
- ResetPsDeCor( h_ps_d );
-
- *h_PS_DEC = h_ps_d;
-
-
-
- return 0;
-
-bail:
- DeletePsDec(&h_ps_d);
-
- return -1;
-} /*END CreatePsDec */
-
-/***************************************************************************/
-/*!
- \brief Delete one instance of the PS_DEC struct
-
- \return Error info
-
-****************************************************************************/
-int
-DeletePsDec( HANDLE_PS_DEC *h_PS_DEC) /*!< pointer to the module state */
-{
- if (*h_PS_DEC == NULL) {
- return -1;
- }
-
-
- FreeRam_ps_dec(h_PS_DEC);
-
-
- return 0;
-} /*END DeletePsDec */
-
-/***************************************************************************/
-/*!
- \brief resets some values of the PS handle to default states
-
- \return
-
-****************************************************************************/
-SBR_ERROR ResetPsDec( HANDLE_PS_DEC h_ps_d ) /*!< pointer to the module state */
-{
- SBR_ERROR errorInfo = SBRDEC_OK;
- INT i;
-
- const UCHAR noQmfBandsInHybrid20 = 3;
- /* const UCHAR noQmfBandsInHybrid34 = 5; */
-
- const UCHAR aHybridResolution20[] = { HYBRID_8_CPLX,
- HYBRID_2_REAL,
- HYBRID_2_REAL };
-
- h_ps_d->specificTo.mpeg.delayBufIndex = 0;
-
- /* explicitly init state variables to safe values (until first ps header arrives) */
-
- h_ps_d->specificTo.mpeg.lastUsb = 0;
-
- h_ps_d->specificTo.mpeg.scaleFactorPsDelayBuffer = -(DFRACT_BITS-1);
-
- FDKmemclear(h_ps_d->specificTo.mpeg.aDelayBufIndexDelayQmf, (NO_QMF_CHANNELS-FIRST_DELAY_SB)*sizeof(UCHAR));
- h_ps_d->specificTo.mpeg.noSampleDelay = delayIndexQmf[0];
-
- for (i=0 ; i < NO_SERIAL_ALLPASS_LINKS; i++) {
- h_ps_d->specificTo.mpeg.aDelayRBufIndexSer[i] = 0;
- }
-
- h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[0] = h_ps_d->specificTo.mpeg.aaQmfDelayBufReal;
-
- assignTimeSlotsPS ( h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[0] + (NO_QMF_CHANNELS-FIRST_DELAY_SB),
- &h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[1],
- h_ps_d->specificTo.mpeg.noSampleDelay-1,
- (NO_DELAY_BUFFER_BANDS-FIRST_DELAY_SB));
-
- h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[0] = h_ps_d->specificTo.mpeg.aaQmfDelayBufImag;
-
- assignTimeSlotsPS ( h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[0] + (NO_QMF_CHANNELS-FIRST_DELAY_SB),
- &h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[1],
- h_ps_d->specificTo.mpeg.noSampleDelay-1,
- (NO_DELAY_BUFFER_BANDS-FIRST_DELAY_SB));
-
- /* Hybrid Filter Bank 1 creation. */
- errorInfo = InitHybridFilterBank ( &h_ps_d->specificTo.mpeg.hybrid,
- h_ps_d->noSubSamples,
- noQmfBandsInHybrid20,
- aHybridResolution20 );
-
- for ( i = 0; i < NO_IID_GROUPS; i++ )
- {
- h_ps_d->specificTo.mpeg.h11rPrev[i] = FL2FXCONST_DBL(0.5f);
- h_ps_d->specificTo.mpeg.h12rPrev[i] = FL2FXCONST_DBL(0.5f);
- }
-
- FDKmemclear( h_ps_d->specificTo.mpeg.h21rPrev, sizeof( h_ps_d->specificTo.mpeg.h21rPrev ) );
- FDKmemclear( h_ps_d->specificTo.mpeg.h22rPrev, sizeof( h_ps_d->specificTo.mpeg.h22rPrev ) );
-
- return errorInfo;
-}
-
-/***************************************************************************/
-/*!
- \brief clear some buffers used in decorrelation process
-
- \return
-
-****************************************************************************/
-void ResetPsDeCor( HANDLE_PS_DEC h_ps_d ) /*!< pointer to the module state */
-{
- INT i;
-
- FDKmemclear(h_ps_d->specificTo.mpeg.aPeakDecayFastBin, NO_MID_RES_BINS*sizeof(FIXP_DBL));
- FDKmemclear(h_ps_d->specificTo.mpeg.aPrevNrgBin, NO_MID_RES_BINS*sizeof(FIXP_DBL));
- FDKmemclear(h_ps_d->specificTo.mpeg.aPrevPeakDiffBin, NO_MID_RES_BINS*sizeof(FIXP_DBL));
- FDKmemclear(h_ps_d->specificTo.mpeg.aPowerPrevScal, NO_MID_RES_BINS*sizeof(SCHAR));
-
- for (i=0 ; i < FIRST_DELAY_SB ; i++) {
- FDKmemclear(h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS*sizeof(FIXP_DBL));
- FDKmemclear(h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS*sizeof(FIXP_DBL));
- }
- for (i=0 ; i < NO_SUB_QMF_CHANNELS ; i++) {
- FDKmemclear(h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerSubQmf[i], NO_DELAY_LENGTH_VECTORS*sizeof(FIXP_DBL));
- FDKmemclear(h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerSubQmf[i], NO_DELAY_LENGTH_VECTORS*sizeof(FIXP_DBL));
- }
-
-}
-
-/*******************************************************************************/
-
-/* slot based funcion prototypes */
-
-static void deCorrelateSlotBased( HANDLE_PS_DEC h_ps_d,
-
- FIXP_DBL *mHybridRealLeft,
- FIXP_DBL *mHybridImagLeft,
- SCHAR sf_mHybridLeft,
-
- FIXP_DBL *rIntBufferLeft,
- FIXP_DBL *iIntBufferLeft,
- SCHAR sf_IntBuffer,
-
- FIXP_DBL *mHybridRealRight,
- FIXP_DBL *mHybridImagRight,
-
- FIXP_DBL *rIntBufferRight,
- FIXP_DBL *iIntBufferRight );
-
-static void applySlotBasedRotation( HANDLE_PS_DEC h_ps_d,
-
- FIXP_DBL *mHybridRealLeft,
- FIXP_DBL *mHybridImagLeft,
-
- FIXP_DBL *QmfLeftReal,
- FIXP_DBL *QmfLeftImag,
-
- FIXP_DBL *mHybridRealRight,
- FIXP_DBL *mHybridImagRight,
-
- FIXP_DBL *QmfRightReal,
- FIXP_DBL *QmfRightImag
- );
-
-
-/***************************************************************************/
-/*!
- \brief Get scale factor for all ps delay buffer.
-
- \return
-
-****************************************************************************/
-static
-int getScaleFactorPsStatesBuffer(HANDLE_PS_DEC h_ps_d)
-{
- INT i;
- int scale = DFRACT_BITS-1;
-
- for (i=0; i<NO_QMF_BANDS_HYBRID20; i++) {
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.hybrid.mQmfBufferRealSlot[i], NO_SUB_QMF_CHANNELS));
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.hybrid.mQmfBufferImagSlot[i], NO_SUB_QMF_CHANNELS));
- }
-
- for (i=0; i<NO_SAMPLE_DELAY_ALLPASS; i++) {
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaRealDelayBufferQmf[i], FIRST_DELAY_SB));
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaImagDelayBufferQmf[i], FIRST_DELAY_SB));
- }
-
- for (i=0; i<NO_SAMPLE_DELAY_ALLPASS; i++) {
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaRealDelayBufferSubQmf[i], NO_SUB_QMF_CHANNELS));
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaImagDelayBufferSubQmf[i], NO_SUB_QMF_CHANNELS));
- }
-
- for (i=0; i<FIRST_DELAY_SB; i++) {
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS));
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS));
- }
-
- for (i=0; i<NO_SUB_QMF_CHANNELS; i++) {
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerSubQmf[i], NO_DELAY_LENGTH_VECTORS));
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerSubQmf[i], NO_DELAY_LENGTH_VECTORS));
- }
-
- for (i=0; i<MAX_DELAY_BUFFER_SIZE; i++)
- {
- INT len;
- if (i==0)
- len = NO_QMF_CHANNELS-FIRST_DELAY_SB;
- else
- len = NO_DELAY_BUFFER_BANDS-FIRST_DELAY_SB;
-
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[i], len));
- scale = fMin(scale, getScalefactor(h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[i], len));
- }
-
- return (scale);
-}
-
-/***************************************************************************/
-/*!
- \brief Rescale all ps delay buffer.
-
- \return
-
-****************************************************************************/
-static
-void scalePsStatesBuffer(HANDLE_PS_DEC h_ps_d,
- int scale)
-{
- INT i;
-
- if (scale < 0)
- scale = fixMax((INT)scale,(INT)-(DFRACT_BITS-1));
- else
- scale = fixMin((INT)scale,(INT)DFRACT_BITS-1);
-
- for (i=0; i<NO_QMF_BANDS_HYBRID20; i++) {
- scaleValues( h_ps_d->specificTo.mpeg.hybrid.mQmfBufferRealSlot[i], NO_SUB_QMF_CHANNELS, scale );
- scaleValues( h_ps_d->specificTo.mpeg.hybrid.mQmfBufferImagSlot[i], NO_SUB_QMF_CHANNELS, scale );
- }
-
- for (i=0; i<NO_SAMPLE_DELAY_ALLPASS; i++) {
- scaleValues( h_ps_d->specificTo.mpeg.aaRealDelayBufferQmf[i], FIRST_DELAY_SB, scale );
- scaleValues( h_ps_d->specificTo.mpeg.aaImagDelayBufferQmf[i], FIRST_DELAY_SB, scale );
- }
-
- for (i=0; i<NO_SAMPLE_DELAY_ALLPASS; i++) {
- scaleValues( h_ps_d->specificTo.mpeg.aaRealDelayBufferSubQmf[i], NO_SUB_QMF_CHANNELS, scale );
- scaleValues( h_ps_d->specificTo.mpeg.aaImagDelayBufferSubQmf[i], NO_SUB_QMF_CHANNELS, scale );
- }
-
- for (i=0; i<FIRST_DELAY_SB; i++) {
- scaleValues( h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS, scale );
- scaleValues( h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS, scale );
- }
-
- for (i=0; i<NO_SUB_QMF_CHANNELS; i++) {
- scaleValues( h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerSubQmf[i], NO_DELAY_LENGTH_VECTORS, scale );
- scaleValues( h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerSubQmf[i], NO_DELAY_LENGTH_VECTORS, scale );
- }
-
- for (i=0; i<MAX_DELAY_BUFFER_SIZE; i++) {
- INT len;
- if (i==0)
- len = NO_QMF_CHANNELS-FIRST_DELAY_SB;
- else
- len = NO_DELAY_BUFFER_BANDS-FIRST_DELAY_SB;
-
- scaleValues( h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[i], len, scale );
- scaleValues( h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[i], len, scale );
- }
-
- scale <<= 1;
-
- scaleValues( h_ps_d->specificTo.mpeg.aPeakDecayFastBin, NO_MID_RES_BINS, scale );
- scaleValues( h_ps_d->specificTo.mpeg.aPrevPeakDiffBin, NO_MID_RES_BINS, scale );
- scaleValues( h_ps_d->specificTo.mpeg.aPrevNrgBin, NO_MID_RES_BINS, scale );
-}
-
-/***************************************************************************/
-/*!
- \brief Scale input channel to the same scalefactor and rescale hybrid
- filterbank values
-
- \return
-
-****************************************************************************/
-
-void scalFilterBankValues( HANDLE_PS_DEC h_ps_d,
- FIXP_DBL **fixpQmfReal,
- FIXP_DBL **fixpQmfImag,
- int lsb,
- int scaleFactorLowBandSplitLow,
- int scaleFactorLowBandSplitHigh,
- SCHAR *scaleFactorLowBand_lb,
- SCHAR *scaleFactorLowBand_hb,
- int scaleFactorHighBands,
- INT *scaleFactorHighBand,
- INT noCols
- )
-{
- INT maxScal;
-
- INT i;
-
- scaleFactorHighBands = -scaleFactorHighBands;
- scaleFactorLowBandSplitLow = -scaleFactorLowBandSplitLow;
- scaleFactorLowBandSplitHigh = -scaleFactorLowBandSplitHigh;
-
- /* get max scale factor */
- maxScal = fixMax(scaleFactorHighBands,fixMax(scaleFactorLowBandSplitLow, scaleFactorLowBandSplitHigh ));
-
- {
- int headroom = getScaleFactorPsStatesBuffer(h_ps_d);
- maxScal = fixMax(maxScal,(INT)(h_ps_d->specificTo.mpeg.scaleFactorPsDelayBuffer-headroom));
- maxScal += 1;
- }
-
- /* scale whole left channel to the same scale factor */
-
- /* low band ( overlap buffer ) */
- if ( maxScal != scaleFactorLowBandSplitLow ) {
- INT scale = scaleFactorLowBandSplitLow - maxScal;
- for ( i=0; i<(6); i++ ) {
- scaleValues( fixpQmfReal[i], lsb, scale );
- scaleValues( fixpQmfImag[i], lsb, scale );
- }
- }
- /* low band ( current frame ) */
- if ( maxScal != scaleFactorLowBandSplitHigh ) {
- INT scale = scaleFactorLowBandSplitHigh - maxScal;
- /* for ( i=(6); i<(6)+MAX_NUM_COL; i++ ) { */
- for ( i=(6); i<(6)+noCols; i++ ) {
- scaleValues( fixpQmfReal[i], lsb, scale );
- scaleValues( fixpQmfImag[i], lsb, scale );
- }
- }
- /* high band */
- if ( maxScal != scaleFactorHighBands ) {
- INT scale = scaleFactorHighBands - maxScal;
- /* for ( i=0; i<MAX_NUM_COL; i++ ) { */
- for ( i=0; i<noCols; i++ ) {
- scaleValues( &fixpQmfReal[i][lsb], (64)-lsb, scale );
- scaleValues( &fixpQmfImag[i][lsb], (64)-lsb, scale );
- }
- }
-
- if ( maxScal != h_ps_d->specificTo.mpeg.scaleFactorPsDelayBuffer )
- scalePsStatesBuffer(h_ps_d,(h_ps_d->specificTo.mpeg.scaleFactorPsDelayBuffer-maxScal));
-
- h_ps_d->specificTo.mpeg.hybrid.sf_mQmfBuffer = maxScal;
- h_ps_d->specificTo.mpeg.scaleFactorPsDelayBuffer = maxScal;
-
- *scaleFactorHighBand += maxScal - scaleFactorHighBands;
-
- h_ps_d->rescal = maxScal - scaleFactorLowBandSplitHigh;
- h_ps_d->sf_IntBuffer = maxScal;
-
- *scaleFactorLowBand_lb += maxScal - scaleFactorLowBandSplitLow;
- *scaleFactorLowBand_hb += maxScal - scaleFactorLowBandSplitHigh;
-}
-
-void rescalFilterBankValues( HANDLE_PS_DEC h_ps_d, /* parametric stereo decoder handle */
- FIXP_DBL **QmfBufferReal, /* qmf filterbank values */
- FIXP_DBL **QmfBufferImag, /* qmf filterbank values */
- int lsb, /* sbr start subband */
- INT noCols)
-{
- int i;
- /* scale back 6 timeslots look ahead for hybrid filterbank to original value */
- for ( i=noCols; i<noCols + (6); i++ ) {
- scaleValues( QmfBufferReal[i], lsb, h_ps_d->rescal );
- scaleValues( QmfBufferImag[i], lsb, h_ps_d->rescal );
- }
-}
-
-/***************************************************************************/
-/*!
- \brief Generate decorrelated side channel using allpass/delay
-
- \return
-
-****************************************************************************/
-static void
-deCorrelateSlotBased( HANDLE_PS_DEC h_ps_d, /*!< pointer to the module state */
-
- FIXP_DBL *mHybridRealLeft, /*!< left (mono) hybrid values real */
- FIXP_DBL *mHybridImagLeft, /*!< left (mono) hybrid values imag */
- SCHAR sf_mHybridLeft, /*!< scalefactor for left (mono) hybrid bands */
-
- FIXP_DBL *rIntBufferLeft, /*!< real qmf bands left (mono) (38x64) */
- FIXP_DBL *iIntBufferLeft, /*!< real qmf bands left (mono) (38x64) */
- SCHAR sf_IntBuffer, /*!< scalefactor for all left and right qmf bands */
-
- FIXP_DBL *mHybridRealRight, /*!< right (decorrelated) hybrid values real */
- FIXP_DBL *mHybridImagRight, /*!< right (decorrelated) hybrid values imag */
-
- FIXP_DBL *rIntBufferRight, /*!< real qmf bands right (decorrelated) (38x64) */
- FIXP_DBL *iIntBufferRight ) /*!< real qmf bands right (decorrelated) (38x64) */
-{
-
- INT i, m, sb, gr, bin;
-
- FIXP_DBL peakDiff, nrg, transRatio;
-
- FIXP_DBL *RESTRICT aaLeftReal;
- FIXP_DBL *RESTRICT aaLeftImag;
-
- FIXP_DBL *RESTRICT aaRightReal;
- FIXP_DBL *RESTRICT aaRightImag;
-
- FIXP_DBL *RESTRICT pRealDelayBuffer;
- FIXP_DBL *RESTRICT pImagDelayBuffer;
-
- C_ALLOC_SCRATCH_START(aaPowerSlot, FIXP_DBL, NO_MID_RES_BINS);
- C_ALLOC_SCRATCH_START(aaTransRatioSlot, FIXP_DBL, NO_MID_RES_BINS);
-
-/*!
-<pre>
- parameter index qmf bands hybrid bands
- ----------------------------------------------------------------------------
- 0 0 0,7
- 1 0 1,6
- 2 0 2
- 3 0 3 HYBRID BANDS
- 4 1 9
- 5 1 8
- 6 2 10
- 7 2 11
- ----------------------------------------------------------------------------
- 8 3
- 9 4
- 10 5
- 11 6
- 12 7
- 13 8
- 14 9,10 (2 ) QMF BANDS
- 15 11 - 13 (3 )
- 16 14 - 17 (4 )
- 17 18 - 22 (5 )
- 18 23 - 34 (12)
- 19 35 - 63 (29)
- ----------------------------------------------------------------------------
-</pre>
-*/
-
- #define FLTR_SCALE 3
-
- /* hybrid bands (parameter index 0 - 7) */
- aaLeftReal = mHybridRealLeft;
- aaLeftImag = mHybridImagLeft;
-
- aaPowerSlot[0] = ( fMultAddDiv2( fMultDiv2(aaLeftReal[0], aaLeftReal[0]), aaLeftImag[0], aaLeftImag[0] ) >> FLTR_SCALE ) +
- ( fMultAddDiv2( fMultDiv2(aaLeftReal[7], aaLeftReal[7]), aaLeftImag[7], aaLeftImag[7] ) >> FLTR_SCALE );
-
- aaPowerSlot[1] = ( fMultAddDiv2( fMultDiv2(aaLeftReal[1], aaLeftReal[1]), aaLeftImag[1], aaLeftImag[1] ) >> FLTR_SCALE ) +
- ( fMultAddDiv2( fMultDiv2(aaLeftReal[6], aaLeftReal[6]), aaLeftImag[6], aaLeftImag[6] ) >> FLTR_SCALE );
-
- aaPowerSlot[2] = fMultAddDiv2( fMultDiv2(aaLeftReal[2], aaLeftReal[2]), aaLeftImag[2], aaLeftImag[2] ) >> FLTR_SCALE;
- aaPowerSlot[3] = fMultAddDiv2( fMultDiv2(aaLeftReal[3], aaLeftReal[3]), aaLeftImag[3], aaLeftImag[3] ) >> FLTR_SCALE;
-
- aaPowerSlot[4] = fMultAddDiv2( fMultDiv2(aaLeftReal[9], aaLeftReal[9]), aaLeftImag[9], aaLeftImag[9] ) >> FLTR_SCALE;
- aaPowerSlot[5] = fMultAddDiv2( fMultDiv2(aaLeftReal[8], aaLeftReal[8]), aaLeftImag[8], aaLeftImag[8] ) >> FLTR_SCALE;
-
- aaPowerSlot[6] = fMultAddDiv2( fMultDiv2(aaLeftReal[10], aaLeftReal[10]), aaLeftImag[10], aaLeftImag[10] ) >> FLTR_SCALE;
- aaPowerSlot[7] = fMultAddDiv2( fMultDiv2(aaLeftReal[11], aaLeftReal[11]), aaLeftImag[11], aaLeftImag[11] ) >> FLTR_SCALE;
-
- /* qmf bands (parameter index 8 - 19) */
- for ( bin = 8; bin < NO_MID_RES_BINS; bin++ ) {
- FIXP_DBL slotNrg = FL2FXCONST_DBL(0.f);
-
- for ( i = groupBorders20[bin+2]; i < groupBorders20[bin+3]; i++ ) { /* max loops: 29 */
- slotNrg += fMultAddDiv2 ( fMultDiv2(rIntBufferLeft[i], rIntBufferLeft[i]), iIntBufferLeft[i], iIntBufferLeft[i]) >> FLTR_SCALE;
- }
- aaPowerSlot[bin] = slotNrg;
-
- }
-
-
- /* calculation of transient ratio */
- for (bin=0; bin < NO_MID_RES_BINS; bin++) { /* noBins = 20 ( BASELINE_PS ) */
-
- h_ps_d->specificTo.mpeg.aPeakDecayFastBin[bin] = fMult( h_ps_d->specificTo.mpeg.aPeakDecayFastBin[bin], PEAK_DECAY_FACTOR );
-
- if (h_ps_d->specificTo.mpeg.aPeakDecayFastBin[bin] < aaPowerSlot[bin]) {
- h_ps_d->specificTo.mpeg.aPeakDecayFastBin[bin] = aaPowerSlot[bin];
- }
-
- /* calculate PSmoothPeakDecayDiffNrg */
- peakDiff = fMultAdd ( (h_ps_d->specificTo.mpeg.aPrevPeakDiffBin[bin]>>1),
- INT_FILTER_COEFF, h_ps_d->specificTo.mpeg.aPeakDecayFastBin[bin] - aaPowerSlot[bin] - h_ps_d->specificTo.mpeg.aPrevPeakDiffBin[bin]);
-
- /* save peakDiff for the next frame */
- h_ps_d->specificTo.mpeg.aPrevPeakDiffBin[bin] = peakDiff;
-
- nrg = h_ps_d->specificTo.mpeg.aPrevNrgBin[bin] + fMult( INT_FILTER_COEFF, aaPowerSlot[bin] - h_ps_d->specificTo.mpeg.aPrevNrgBin[bin] );
-
- /* Negative energies don't exist. But sometimes they appear due to rounding. */
-
- nrg = fixMax(nrg,FL2FXCONST_DBL(0.f));
-
- /* save nrg for the next frame */
- h_ps_d->specificTo.mpeg.aPrevNrgBin[bin] = nrg;
-
- nrg = fMult( nrg, TRANSIENT_IMPACT_FACTOR );
-
- /* save transient impact factor */
- if ( peakDiff <= nrg || peakDiff == FL2FXCONST_DBL(0.0) ) {
- aaTransRatioSlot[bin] = (FIXP_DBL)MAXVAL_DBL /* FL2FXCONST_DBL(1.0f)*/;
- }
- else if ( nrg <= FL2FXCONST_DBL(0.0f) ) {
- aaTransRatioSlot[bin] = FL2FXCONST_DBL(0.f);
- }
- else {
- /* scale to denominator */
- INT scale_left = fixMax(0, CntLeadingZeros(peakDiff) - 1);
- aaTransRatioSlot[bin] = schur_div( nrg<<scale_left, peakDiff<<scale_left, 16);
- }
- } /* bin */
-
-
-
-
- #define DELAY_GROUP_OFFSET 20
- #define NR_OF_DELAY_GROUPS 2
-
- FIXP_DBL rTmp, iTmp, rTmp0, iTmp0, rR0, iR0;
-
- INT TempDelay = h_ps_d->specificTo.mpeg.delayBufIndex; /* set delay indices */
-
- pRealDelayBuffer = h_ps_d->specificTo.mpeg.aaRealDelayBufferSubQmf[TempDelay];
- pImagDelayBuffer = h_ps_d->specificTo.mpeg.aaImagDelayBufferSubQmf[TempDelay];
-
- aaLeftReal = mHybridRealLeft;
- aaLeftImag = mHybridImagLeft;
- aaRightReal = mHybridRealRight;
- aaRightImag = mHybridImagRight;
-
- /************************/
- /* ICC groups : 0 - 9 */
- /************************/
-
- /* gr = ICC groups */
- for (gr=0; gr < SUBQMF_GROUPS; gr++) {
-
- transRatio = aaTransRatioSlot[bins2groupMap20[gr]];
-
- /* sb = subQMF/QMF subband */
- sb = groupBorders20[gr];
-
- /* Update delay buffers, sample delay allpass = 2 */
- rTmp0 = pRealDelayBuffer[sb];
- iTmp0 = pImagDelayBuffer[sb];
-
- pRealDelayBuffer[sb] = aaLeftReal[sb];
- pImagDelayBuffer[sb] = aaLeftImag[sb];
-
- /* delay by fraction */
- cplxMultDiv2(&rR0, &iR0, rTmp0, iTmp0, aaFractDelayPhaseFactorReSubQmf20[sb], aaFractDelayPhaseFactorImSubQmf20[sb]);
- rR0<<=1;
- iR0<<=1;
-
- FIXP_DBL *pAaaRealDelayRBufferSerSubQmf = h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerSubQmf[sb];
- FIXP_DBL *pAaaImagDelayRBufferSerSubQmf = h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerSubQmf[sb];
-
- for (m=0; m<NO_SERIAL_ALLPASS_LINKS ; m++) {
-
- INT tmpDelayRSer = h_ps_d->specificTo.mpeg.aDelayRBufIndexSer[m];
-
- /* get delayed values from according buffer : m(0)=3; m(1)=4; m(2)=5; */
- rTmp0 = pAaaRealDelayRBufferSerSubQmf[tmpDelayRSer];
- iTmp0 = pAaaImagDelayRBufferSerSubQmf[tmpDelayRSer];
-
- /* delay by fraction */
- cplxMultDiv2(&rTmp, &iTmp, rTmp0, iTmp0, aaFractDelayPhaseFactorSerReSubQmf20[sb][m], aaFractDelayPhaseFactorSerImSubQmf20[sb][m]);
-
- rTmp = (rTmp - fMultDiv2(aAllpassLinkDecaySer[m], rR0)) << 1;
- iTmp = (iTmp - fMultDiv2(aAllpassLinkDecaySer[m], iR0)) << 1;
-
- pAaaRealDelayRBufferSerSubQmf[tmpDelayRSer] = rR0 + fMult(aAllpassLinkDecaySer[m], rTmp);
- pAaaImagDelayRBufferSerSubQmf[tmpDelayRSer] = iR0 + fMult(aAllpassLinkDecaySer[m], iTmp);
-
- rR0 = rTmp;
- iR0 = iTmp;
-
- pAaaRealDelayRBufferSerSubQmf += aAllpassLinkDelaySer[m];
- pAaaImagDelayRBufferSerSubQmf += aAllpassLinkDelaySer[m];
-
- } /* m */
-
- /* duck if a past transient is found */
- aaRightReal[sb] = fMult(transRatio, rR0);
- aaRightImag[sb] = fMult(transRatio, iR0);
-
- } /* gr */
-
-
- scaleValues( mHybridRealLeft, NO_SUB_QMF_CHANNELS, -SCAL_HEADROOM );
- scaleValues( mHybridImagLeft, NO_SUB_QMF_CHANNELS, -SCAL_HEADROOM );
- scaleValues( mHybridRealRight, NO_SUB_QMF_CHANNELS, -SCAL_HEADROOM );
- scaleValues( mHybridImagRight, NO_SUB_QMF_CHANNELS, -SCAL_HEADROOM );
-
-
- /************************/
-
- aaLeftReal = rIntBufferLeft;
- aaLeftImag = iIntBufferLeft;
- aaRightReal = rIntBufferRight;
- aaRightImag = iIntBufferRight;
-
- pRealDelayBuffer = h_ps_d->specificTo.mpeg.aaRealDelayBufferQmf[TempDelay];
- pImagDelayBuffer = h_ps_d->specificTo.mpeg.aaImagDelayBufferQmf[TempDelay];
-
- /************************/
- /* ICC groups : 10 - 19 */
- /************************/
-
-
- /* gr = ICC groups */
- for (gr=SUBQMF_GROUPS; gr < NO_IID_GROUPS - NR_OF_DELAY_GROUPS; gr++) {
-
- transRatio = aaTransRatioSlot[bins2groupMap20[gr]];
-
- /* sb = subQMF/QMF subband */
- for (sb = groupBorders20[gr]; sb < groupBorders20[gr+1]; sb++) {
- FIXP_DBL resR, resI;
-
- /* decayScaleFactor = 1.0f + decay_cutoff * DECAY_SLOPE - DECAY_SLOPE * sb; DECAY_SLOPE = 0.05 */
- FIXP_DBL decayScaleFactor = decayScaleFactTable[sb];
-
- /* Update delay buffers, sample delay allpass = 2 */
- rTmp0 = pRealDelayBuffer[sb];
- iTmp0 = pImagDelayBuffer[sb];
-
- pRealDelayBuffer[sb] = aaLeftReal[sb];
- pImagDelayBuffer[sb] = aaLeftImag[sb];
-
- /* delay by fraction */
- cplxMultDiv2(&rR0, &iR0, rTmp0, iTmp0, aaFractDelayPhaseFactorReQmf[sb], aaFractDelayPhaseFactorImQmf[sb]);
- rR0<<=1;
- iR0<<=1;
-
- resR = fMult(decayScaleFactor, rR0);
- resI = fMult(decayScaleFactor, iR0);
-
- FIXP_DBL *pAaaRealDelayRBufferSerQmf = h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerQmf[sb];
- FIXP_DBL *pAaaImagDelayRBufferSerQmf = h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerQmf[sb];
-
- for (m=0; m<NO_SERIAL_ALLPASS_LINKS ; m++) {
-
- INT tmpDelayRSer = h_ps_d->specificTo.mpeg.aDelayRBufIndexSer[m];
-
- /* get delayed values from according buffer : m(0)=3; m(1)=4; m(2)=5; */
- rTmp0 = pAaaRealDelayRBufferSerQmf[tmpDelayRSer];
- iTmp0 = pAaaImagDelayRBufferSerQmf[tmpDelayRSer];
-
- /* delay by fraction */
- cplxMultDiv2(&rTmp, &iTmp, rTmp0, iTmp0, aaFractDelayPhaseFactorSerReQmf[sb][m], aaFractDelayPhaseFactorSerImQmf[sb][m]);
-
- rTmp = (rTmp - fMultDiv2(aAllpassLinkDecaySer[m], resR))<<1;
- iTmp = (iTmp - fMultDiv2(aAllpassLinkDecaySer[m], resI))<<1;
-
- resR = fMult(decayScaleFactor, rTmp);
- resI = fMult(decayScaleFactor, iTmp);
-
- pAaaRealDelayRBufferSerQmf[tmpDelayRSer] = rR0 + fMult(aAllpassLinkDecaySer[m], resR);
- pAaaImagDelayRBufferSerQmf[tmpDelayRSer] = iR0 + fMult(aAllpassLinkDecaySer[m], resI);
-
- rR0 = rTmp;
- iR0 = iTmp;
-
- pAaaRealDelayRBufferSerQmf += aAllpassLinkDelaySer[m];
- pAaaImagDelayRBufferSerQmf += aAllpassLinkDelaySer[m];
-
- } /* m */
-
- /* duck if a past transient is found */
- aaRightReal[sb] = fMult(transRatio, rR0);
- aaRightImag[sb] = fMult(transRatio, iR0);
-
- } /* sb */
- } /* gr */
-
- /************************/
- /* ICC groups : 20, 21 */
- /************************/
-
-
- /* gr = ICC groups */
- for (gr=DELAY_GROUP_OFFSET; gr < NO_IID_GROUPS; gr++) {
-
- INT sbStart = groupBorders20[gr];
- INT sbStop = groupBorders20[gr+1];
-
- UCHAR *pDelayBufIdx = &h_ps_d->specificTo.mpeg.aDelayBufIndexDelayQmf[sbStart-FIRST_DELAY_SB];
-
- transRatio = aaTransRatioSlot[bins2groupMap20[gr]];
-
- /* sb = subQMF/QMF subband */
- for (sb = sbStart; sb < sbStop; sb++) {
-
- /* Update delay buffers */
- rR0 = h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[*pDelayBufIdx][sb-FIRST_DELAY_SB];
- iR0 = h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[*pDelayBufIdx][sb-FIRST_DELAY_SB];
-
- h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[*pDelayBufIdx][sb-FIRST_DELAY_SB] = aaLeftReal[sb];
- h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[*pDelayBufIdx][sb-FIRST_DELAY_SB] = aaLeftImag[sb];
-
- /* duck if a past transient is found */
- aaRightReal[sb] = fMult(transRatio, rR0);
- aaRightImag[sb] = fMult(transRatio, iR0);
-
- if (++(*pDelayBufIdx) >= delayIndexQmf[sb]) {
- *pDelayBufIdx = 0;
- }
- pDelayBufIdx++;
-
- } /* sb */
- } /* gr */
-
-
- /* Update delay buffer index */
- if (++h_ps_d->specificTo.mpeg.delayBufIndex >= NO_SAMPLE_DELAY_ALLPASS)
- h_ps_d->specificTo.mpeg.delayBufIndex = 0;
-
- for (m=0; m<NO_SERIAL_ALLPASS_LINKS ; m++) {
- if (++h_ps_d->specificTo.mpeg.aDelayRBufIndexSer[m] >= aAllpassLinkDelaySer[m])
- h_ps_d->specificTo.mpeg.aDelayRBufIndexSer[m] = 0;
- }
-
-
- scaleValues( &rIntBufferLeft[NO_QMF_BANDS_HYBRID20], NO_QMF_CHANNELS-NO_QMF_BANDS_HYBRID20, -SCAL_HEADROOM );
- scaleValues( &iIntBufferLeft[NO_QMF_BANDS_HYBRID20], NO_QMF_CHANNELS-NO_QMF_BANDS_HYBRID20, -SCAL_HEADROOM );
- scaleValues( &rIntBufferRight[NO_QMF_BANDS_HYBRID20], NO_QMF_CHANNELS-NO_QMF_BANDS_HYBRID20, -SCAL_HEADROOM );
- scaleValues( &iIntBufferRight[NO_QMF_BANDS_HYBRID20], NO_QMF_CHANNELS-NO_QMF_BANDS_HYBRID20, -SCAL_HEADROOM );
-
- /* free memory on scratch */
- C_ALLOC_SCRATCH_END(aaTransRatioSlot, FIXP_DBL, NO_MID_RES_BINS);
- C_ALLOC_SCRATCH_END(aaPowerSlot, FIXP_DBL, NO_MID_RES_BINS);
-}
-
-
-void initSlotBasedRotation( HANDLE_PS_DEC h_ps_d, /*!< pointer to the module state */
- int env,
- int usb
- ) {
-
- INT group = 0;
- INT bin = 0;
- INT noIidSteps;
-
-/* const UCHAR *pQuantizedIIDs;*/
-
- FIXP_SGL invL;
- FIXP_DBL ScaleL, ScaleR;
- FIXP_DBL Alpha, Beta;
- FIXP_DBL h11r, h12r, h21r, h22r;
-
- const FIXP_DBL *PScaleFactors;
-
- /* Overwrite old values in delay buffers when upper subband is higher than in last frame */
- if (env == 0) {
-
- if ((usb > h_ps_d->specificTo.mpeg.lastUsb) && h_ps_d->specificTo.mpeg.lastUsb) {
-
- INT i,k,length;
-
- for (i=h_ps_d->specificTo.mpeg.lastUsb ; i < FIRST_DELAY_SB; i++) {
- FDKmemclear(h_ps_d->specificTo.mpeg.aaaRealDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS*sizeof(FIXP_DBL));
- FDKmemclear(h_ps_d->specificTo.mpeg.aaaImagDelayRBufferSerQmf[i], NO_DELAY_LENGTH_VECTORS*sizeof(FIXP_DBL));
- }
-
- for (k=0 ; k<NO_SAMPLE_DELAY_ALLPASS; k++) {
- FDKmemclear(h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[k], FIRST_DELAY_SB*sizeof(FIXP_DBL));
- }
- length = (usb-FIRST_DELAY_SB)*sizeof(FIXP_DBL);
- if(length>0) {
- FDKmemclear(h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[0], length);
- FDKmemclear(h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[0], length);
- }
- length = (fixMin(NO_DELAY_BUFFER_BANDS,(INT)usb)-FIRST_DELAY_SB)*sizeof(FIXP_DBL);
- if(length>0) {
- for (k=1 ; k < h_ps_d->specificTo.mpeg.noSampleDelay; k++) {
- FDKmemclear(h_ps_d->specificTo.mpeg.pAaRealDelayBufferQmf[k], length);
- FDKmemclear(h_ps_d->specificTo.mpeg.pAaImagDelayBufferQmf[k], length);
- }
- }
- }
- h_ps_d->specificTo.mpeg.lastUsb = usb;
- } /* env == 0 */
-
- if (h_ps_d->bsData[h_ps_d->processSlot].mpeg.bFineIidQ)
- {
- PScaleFactors = ScaleFactorsFine; /* values are shiftet right by one */
- noIidSteps = NO_IID_STEPS_FINE;
- /*pQuantizedIIDs = quantizedIIDsFine;*/
- }
-
- else
- {
- PScaleFactors = ScaleFactors; /* values are shiftet right by one */
- noIidSteps = NO_IID_STEPS;
- /*pQuantizedIIDs = quantizedIIDs;*/
- }
-
-
- /* dequantize and decode */
- for ( group = 0; group < NO_IID_GROUPS; group++ ) {
-
- bin = bins2groupMap20[group];
-
- /*!
- <h3> type 'A' rotation </h3>
- mixing procedure R_a, used in baseline version<br>
-
- Scale-factor vectors c1 and c2 are precalculated in initPsTables () and stored in
- scaleFactors[] and scaleFactorsFine[] = pScaleFactors [].
- From the linearized IID parameters (intensity differences), two scale factors are
- calculated. They are used to obtain the coefficients h11... h22.
- */
-
- /* ScaleR and ScaleL are scaled by 1 shift right */
-
- ScaleR = PScaleFactors[noIidSteps + h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin]];
- ScaleL = PScaleFactors[noIidSteps - h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin]];
-
- Beta = fMult (fMult( Alphas[h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env][bin]], ( ScaleR - ScaleL )), FIXP_SQRT05);
- Alpha = Alphas[h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env][bin]]>>1;
-
- /* Alpha and Beta are now both scaled by 2 shifts right */
-
- /* calculate the coefficients h11... h22 from scale-factors and ICC parameters */
-
- /* h values are scaled by 1 shift right */
- {
- FIXP_DBL trigData[4];
-
- inline_fixp_cos_sin(Beta + Alpha, Beta - Alpha, 2, trigData);
- h11r = fMult( ScaleL, trigData[0]);
- h12r = fMult( ScaleR, trigData[2]);
- h21r = fMult( ScaleL, trigData[1]);
- h22r = fMult( ScaleR, trigData[3]);
- }
- /*****************************************************************************************/
- /* Interpolation of the matrices H11... H22: */
- /* */
- /* H11(k,n) = H11(k,n[e]) + (n-n[e]) * (H11(k,n[e+1] - H11(k,n[e])) / (n[e+1] - n[e]) */
- /* ... */
- /*****************************************************************************************/
-
- /* invL = 1/(length of envelope) */
- invL = FX_DBL2FX_SGL(GetInvInt(h_ps_d->bsData[h_ps_d->processSlot].mpeg.aEnvStartStop[env + 1] - h_ps_d->bsData[h_ps_d->processSlot].mpeg.aEnvStartStop[env]));
-
- h_ps_d->specificTo.mpeg.coef.H11r[group] = h_ps_d->specificTo.mpeg.h11rPrev[group];
- h_ps_d->specificTo.mpeg.coef.H12r[group] = h_ps_d->specificTo.mpeg.h12rPrev[group];
- h_ps_d->specificTo.mpeg.coef.H21r[group] = h_ps_d->specificTo.mpeg.h21rPrev[group];
- h_ps_d->specificTo.mpeg.coef.H22r[group] = h_ps_d->specificTo.mpeg.h22rPrev[group];
-
- h_ps_d->specificTo.mpeg.coef.DeltaH11r[group] = fMult ( h11r - h_ps_d->specificTo.mpeg.coef.H11r[group], invL );
- h_ps_d->specificTo.mpeg.coef.DeltaH12r[group] = fMult ( h12r - h_ps_d->specificTo.mpeg.coef.H12r[group], invL );
- h_ps_d->specificTo.mpeg.coef.DeltaH21r[group] = fMult ( h21r - h_ps_d->specificTo.mpeg.coef.H21r[group], invL );
- h_ps_d->specificTo.mpeg.coef.DeltaH22r[group] = fMult ( h22r - h_ps_d->specificTo.mpeg.coef.H22r[group], invL );
-
- /* update prev coefficients for interpolation in next envelope */
-
- h_ps_d->specificTo.mpeg.h11rPrev[group] = h11r;
- h_ps_d->specificTo.mpeg.h12rPrev[group] = h12r;
- h_ps_d->specificTo.mpeg.h21rPrev[group] = h21r;
- h_ps_d->specificTo.mpeg.h22rPrev[group] = h22r;
-
- } /* group loop */
-}
-
-
-static void applySlotBasedRotation( HANDLE_PS_DEC h_ps_d, /*!< pointer to the module state */
-
- FIXP_DBL *mHybridRealLeft, /*!< hybrid values real left */
- FIXP_DBL *mHybridImagLeft, /*!< hybrid values imag left */
-
- FIXP_DBL *QmfLeftReal, /*!< real bands left qmf channel */
- FIXP_DBL *QmfLeftImag, /*!< imag bands left qmf channel */
-
- FIXP_DBL *mHybridRealRight, /*!< hybrid values real right */
- FIXP_DBL *mHybridImagRight, /*!< hybrid values imag right */
-
- FIXP_DBL *QmfRightReal, /*!< real bands right qmf channel */
- FIXP_DBL *QmfRightImag /*!< imag bands right qmf channel */
- )
-{
- INT group;
- INT subband;
-
- FIXP_DBL *RESTRICT HybrLeftReal;
- FIXP_DBL *RESTRICT HybrLeftImag;
- FIXP_DBL *RESTRICT HybrRightReal;
- FIXP_DBL *RESTRICT HybrRightImag;
-
- FIXP_DBL tmpLeft, tmpRight;
-
-
- /**********************************************************************************************/
- /*!
- <h2> Mapping </h2>
-
- The number of stereo bands that is actually used depends on the number of availble
- parameters for IID and ICC:
- <pre>
- nr. of IID para.| nr. of ICC para. | nr. of Stereo bands
- ----------------|------------------|-------------------
- 10,20 | 10,20 | 20
- 10,20 | 34 | 34
- 34 | 10,20 | 34
- 34 | 34 | 34
- </pre>
- In the case the number of parameters for IIS and ICC differs from the number of stereo
- bands, a mapping from the lower number to the higher number of parameters is applied.
- Index mapping of IID and ICC parameters is already done in psbitdec.cpp. Further mapping is
- not needed here in baseline version.
- **********************************************************************************************/
-
- /************************************************************************************************/
- /*!
- <h2> Mixing </h2>
-
- To generate the QMF subband signals for the subband samples n = n[e]+1 ,,, n_[e+1] the
- parameters at position n[e] and n[e+1] are required as well as the subband domain signals
- s_k(n) and d_k(n) for n = n[e]+1... n_[e+1]. n[e] represents the start position for
- envelope e. The border positions n[e] are handled in DecodePS().
-
- The stereo sub subband signals are constructed as:
- <pre>
- l_k(n) = H11(k,n) s_k(n) + H21(k,n) d_k(n)
- r_k(n) = H21(k,n) s_k(n) + H22(k,n) d_k(n)
- </pre>
- In order to obtain the matrices H11(k,n)... H22 (k,n), the vectors h11(b)... h22(b) need to
- be calculated first (b: parameter index). Depending on ICC mode either mixing procedure R_a
- or R_b is used for that. For both procedures, the parameters for parameter position n[e+1]
- is used.
- ************************************************************************************************/
-
-
- /************************************************************************************************/
- /*!
- <h2>Phase parameters </h2>
- With disabled phase parameters (which is the case in baseline version), the H-matrices are
- just calculated by:
-
- <pre>
- H11(k,n[e+1] = h11(b(k))
- (...)
- b(k): parameter index according to mapping table
- </pre>
-
- <h2>Processing of the samples in the sub subbands </h2>
- this loop includes the interpolation of the coefficients Hxx
- ************************************************************************************************/
-
-
- /* loop thru all groups ... */
- HybrLeftReal = mHybridRealLeft;
- HybrLeftImag = mHybridImagLeft;
- HybrRightReal = mHybridRealRight;
- HybrRightImag = mHybridImagRight;
-
- /******************************************************/
- /* construct stereo sub subband signals according to: */
- /* */
- /* l_k(n) = H11(k,n) s_k(n) + H21(k,n) d_k(n) */
- /* r_k(n) = H12(k,n) s_k(n) + H22(k,n) d_k(n) */
- /******************************************************/
- for ( group = 0; group < SUBQMF_GROUPS; group++ ) {
-
- h_ps_d->specificTo.mpeg.coef.H11r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH11r[group];
- h_ps_d->specificTo.mpeg.coef.H12r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH12r[group];
- h_ps_d->specificTo.mpeg.coef.H21r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH21r[group];
- h_ps_d->specificTo.mpeg.coef.H22r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH22r[group];
-
- subband = groupBorders20[group];
-
- tmpLeft = fMultAddDiv2( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H11r[group], HybrLeftReal[subband]), h_ps_d->specificTo.mpeg.coef.H21r[group], HybrRightReal[subband]);
- tmpRight = fMultAddDiv2( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H12r[group], HybrLeftReal[subband]), h_ps_d->specificTo.mpeg.coef.H22r[group], HybrRightReal[subband]);
- HybrLeftReal [subband] = tmpLeft<<1;
- HybrRightReal[subband] = tmpRight<<1;
-
- tmpLeft = fMultAdd( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H11r[group], HybrLeftImag[subband]), h_ps_d->specificTo.mpeg.coef.H21r[group], HybrRightImag[subband]);
- tmpRight = fMultAdd( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H12r[group], HybrLeftImag[subband]), h_ps_d->specificTo.mpeg.coef.H22r[group], HybrRightImag[subband]);
- HybrLeftImag [subband] = tmpLeft;
- HybrRightImag[subband] = tmpRight;
- }
-
- /* continue in the qmf buffers */
- HybrLeftReal = QmfLeftReal;
- HybrLeftImag = QmfLeftImag;
- HybrRightReal = QmfRightReal;
- HybrRightImag = QmfRightImag;
-
- for (; group < NO_IID_GROUPS; group++ ) {
-
- h_ps_d->specificTo.mpeg.coef.H11r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH11r[group];
- h_ps_d->specificTo.mpeg.coef.H12r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH12r[group];
- h_ps_d->specificTo.mpeg.coef.H21r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH21r[group];
- h_ps_d->specificTo.mpeg.coef.H22r[group] += h_ps_d->specificTo.mpeg.coef.DeltaH22r[group];
-
- for ( subband = groupBorders20[group]; subband < groupBorders20[group + 1]; subband++ )
- {
- tmpLeft = fMultAdd( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H11r[group], HybrLeftReal[subband]), h_ps_d->specificTo.mpeg.coef.H21r[group], HybrRightReal[subband]);
- tmpRight = fMultAdd( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H12r[group], HybrLeftReal[subband]), h_ps_d->specificTo.mpeg.coef.H22r[group], HybrRightReal[subband]);
- HybrLeftReal [subband] = tmpLeft;
- HybrRightReal[subband] = tmpRight;
-
- tmpLeft = fMultAdd( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H11r[group], HybrLeftImag[subband]), h_ps_d->specificTo.mpeg.coef.H21r[group], HybrRightImag[subband]);
- tmpRight = fMultAdd( fMultDiv2(h_ps_d->specificTo.mpeg.coef.H12r[group], HybrLeftImag[subband]), h_ps_d->specificTo.mpeg.coef.H22r[group], HybrRightImag[subband]);
- HybrLeftImag [subband] = tmpLeft;
- HybrRightImag[subband] = tmpRight;
-
- } /* subband */
- }
-}
-
-
-/***************************************************************************/
-/*!
- \brief Applies IID, ICC, IPD and OPD parameters to the current frame.
-
- \return none
-
-****************************************************************************/
-void
-ApplyPsSlot( HANDLE_PS_DEC h_ps_d, /*!< handle PS_DEC*/
- FIXP_DBL **rIntBufferLeft, /*!< real bands left qmf channel (38x64) */
- FIXP_DBL **iIntBufferLeft, /*!< imag bands left qmf channel (38x64) */
- FIXP_DBL *rIntBufferRight, /*!< real bands right qmf channel (38x64) */
- FIXP_DBL *iIntBufferRight /*!< imag bands right qmf channel (38x64) */
- )
-{
-
- /*!
- The 64-band QMF representation of the monaural signal generated by the SBR tool
- is used as input of the PS tool. After the PS processing, the outputs of the left
- and right hybrid synthesis filterbanks are used to generate the stereo output
- signal.
-
- <pre>
-
- ------------- ---------- -------------
- | Hybrid | M_n[k,m] | | L_n[k,m] | Hybrid | l[n]
- m[n] --->| analysis |--------->| |--------->| synthesis |----->
- | filter bank | | | | filter bank |
- ------------- | Stereo | -------------
- | | recon- |
- | | stuction |
- \|/ | |
- ------------- | |
- | De- | D_n[k,m] | |
- | correlation |--------->| |
- ------------- | | -------------
- | | R_n[k,m] | Hybrid | r[n]
- | |--------->| synthesis |----->
- IID, ICC ------------------------>| | | filter bank |
- (IPD, OPD) ---------- -------------
-
- m[n]: QMF represantation of the mono input
- M_n[k,m]: (sub-)sub-band domain signals of the mono input
- D_n[k,m]: decorrelated (sub-)sub-band domain signals
- L_n[k,m]: (sub-)sub-band domain signals of the left output
- R_n[k,m]: (sub-)sub-band domain signals of the right output
- l[n],r[n]: left/right output signals
-
- </pre>
- */
-
- /* get temporary hybrid qmf values of one timeslot */
- C_ALLOC_SCRATCH_START(hybridRealLeft, FIXP_DBL, NO_SUB_QMF_CHANNELS);
- C_ALLOC_SCRATCH_START(hybridImagLeft, FIXP_DBL, NO_SUB_QMF_CHANNELS);
- C_ALLOC_SCRATCH_START(hybridRealRight, FIXP_DBL, NO_SUB_QMF_CHANNELS);
- C_ALLOC_SCRATCH_START(hybridImagRight, FIXP_DBL, NO_SUB_QMF_CHANNELS);
-
- SCHAR sf_IntBuffer = h_ps_d->sf_IntBuffer;
-
- /* clear workbuffer */
- FDKmemclear(hybridRealLeft, NO_SUB_QMF_CHANNELS*sizeof(FIXP_DBL));
- FDKmemclear(hybridImagLeft, NO_SUB_QMF_CHANNELS*sizeof(FIXP_DBL));
- FDKmemclear(hybridRealRight, NO_SUB_QMF_CHANNELS*sizeof(FIXP_DBL));
- FDKmemclear(hybridImagRight, NO_SUB_QMF_CHANNELS*sizeof(FIXP_DBL));
-
-
- /*!
- Hybrid analysis filterbank:
- The lower 3 (5) of the 64 QMF subbands are further split to provide better frequency resolution.
- for PS processing.
- For the 10 and 20 stereo bands configuration, the QMF band H_0(w) is split
- up into 8 (sub-) sub-bands and the QMF bands H_1(w) and H_2(w) are spit into 2 (sub-)
- 4th. (See figures 8.20 and 8.22 of ISO/IEC 14496-3:2001/FDAM 2:2004(E) )
- */
-
-
- if (h_ps_d->procFrameBased == 1) /* If we have switched from frame to slot based processing */
- { /* fill hybrid delay buffer. */
- h_ps_d->procFrameBased = 0;
-
- fillHybridDelayLine( rIntBufferLeft,
- iIntBufferLeft,
- hybridRealLeft,
- hybridImagLeft,
- hybridRealRight,
- hybridImagRight,
- &h_ps_d->specificTo.mpeg.hybrid );
- }
-
- slotBasedHybridAnalysis ( rIntBufferLeft[HYBRID_FILTER_DELAY], /* qmf filterbank values */
- iIntBufferLeft[HYBRID_FILTER_DELAY], /* qmf filterbank values */
- hybridRealLeft, /* hybrid filterbank values */
- hybridImagLeft, /* hybrid filterbank values */
- &h_ps_d->specificTo.mpeg.hybrid); /* hybrid filterbank handle */
-
-
- SCHAR hybridScal = h_ps_d->specificTo.mpeg.hybrid.sf_mQmfBuffer;
-
-
- /*!
- Decorrelation:
- By means of all-pass filtering and delaying, the (sub-)sub-band samples s_k(n) are
- converted into de-correlated (sub-)sub-band samples d_k(n).
- - k: frequency in hybrid spectrum
- - n: time index
- */
-
- deCorrelateSlotBased( h_ps_d, /* parametric stereo decoder handle */
- hybridRealLeft, /* left hybrid time slot */
- hybridImagLeft,
- hybridScal, /* scale factor of left hybrid time slot */
- rIntBufferLeft[0], /* left qmf time slot */
- iIntBufferLeft[0],
- sf_IntBuffer, /* scale factor of left and right qmf time slot */
- hybridRealRight, /* right hybrid time slot */
- hybridImagRight,
- rIntBufferRight, /* right qmf time slot */
- iIntBufferRight );
-
-
-
- /*!
- Stereo Processing:
- The sets of (sub-)sub-band samples s_k(n) and d_k(n) are processed according to
- the stereo cues which are defined per stereo band.
- */
-
-
- applySlotBasedRotation( h_ps_d, /* parametric stereo decoder handle */
- hybridRealLeft, /* left hybrid time slot */
- hybridImagLeft,
- rIntBufferLeft[0], /* left qmf time slot */
- iIntBufferLeft[0],
- hybridRealRight, /* right hybrid time slot */
- hybridImagRight,
- rIntBufferRight, /* right qmf time slot */
- iIntBufferRight );
-
-
-
-
- /*!
- Hybrid synthesis filterbank:
- The stereo processed hybrid subband signals l_k(n) and r_k(n) are fed into the hybrid synthesis
- filterbanks which are identical to the 64 complex synthesis filterbank of the SBR tool. The
- input to the filterbank are slots of 64 QMF samples. For each slot the filterbank outputs one
- block of 64 samples of one reconstructed stereo channel. The hybrid synthesis filterbank is
- computed seperatly for the left and right channel.
- */
-
-
- /* left channel */
- slotBasedHybridSynthesis ( hybridRealLeft, /* one timeslot of hybrid filterbank values */
- hybridImagLeft,
- rIntBufferLeft[0], /* one timeslot of qmf filterbank values */
- iIntBufferLeft[0],
- &h_ps_d->specificTo.mpeg.hybrid ); /* hybrid filterbank handle */
-
- /* right channel */
- slotBasedHybridSynthesis ( hybridRealRight, /* one timeslot of hybrid filterbank values */
- hybridImagRight,
- rIntBufferRight, /* one timeslot of qmf filterbank values */
- iIntBufferRight,
- &h_ps_d->specificTo.mpeg.hybrid ); /* hybrid filterbank handle */
-
-
-
-
-
-
-
- /* free temporary hybrid qmf values of one timeslot */
- C_ALLOC_SCRATCH_END(hybridImagRight, FIXP_DBL, NO_SUB_QMF_CHANNELS);
- C_ALLOC_SCRATCH_END(hybridRealRight, FIXP_DBL, NO_SUB_QMF_CHANNELS);
- C_ALLOC_SCRATCH_END(hybridImagLeft, FIXP_DBL, NO_SUB_QMF_CHANNELS);
- C_ALLOC_SCRATCH_END(hybridRealLeft, FIXP_DBL, NO_SUB_QMF_CHANNELS);
-
-}/* END ApplyPsSlot */
-
-
-/***************************************************************************/
-/*!
-
- \brief assigns timeslots to an array
-
- \return
-
-****************************************************************************/
-
-static void assignTimeSlotsPS (FIXP_DBL *bufAdr,
- FIXP_DBL **bufPtr,
- const int numSlots,
- const int numChan)
-{
- FIXP_DBL *ptr;
- int slot;
- ptr = bufAdr;
- for(slot=0; slot < numSlots; slot++) {
- bufPtr [slot] = ptr;
- ptr += numChan;
- }
-}
-
diff --git a/libSBRdec/src/psdec.h b/libSBRdec/src/psdec.h
deleted file mode 100644
index 3dbc76d..0000000
--- a/libSBRdec/src/psdec.h
+++ /dev/null
@@ -1,352 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Sbr decoder
-*/
-#ifndef __PSDEC_H
-#define __PSDEC_H
-
-#include "sbrdecoder.h"
-
-
-
-/* This PS decoder implements the baseline version. So it always uses the */
-/* hybrid filter structure for 20 stereo bands and does not implemet IPD/OPD */
-/* synthesis. The baseline version has to support the complete PS bitstream */
-/* syntax. But IPD/OPD data is ignored and set to 0. If 34 stereo band config */
-/* is used in the bitstream for IIS/ICC the decoded parameters are mapped to */
-/* 20 stereo bands. */
-
-
-#include "FDK_bitstream.h"
-
-#include "psdec_hybrid.h"
-
-#define SCAL_HEADROOM ( 2 )
-
-#define PS_EXTENSION_SIZE_BITS ( 4 )
-#define PS_EXTENSION_ESC_COUNT_BITS ( 8 )
-
-#define NO_QMF_CHANNELS ( 64 )
-#define MAX_NUM_COL ( 32 )
-
-
- #define NO_QMF_BANDS_HYBRID20 ( 3 )
- #define NO_SUB_QMF_CHANNELS ( 12 )
-
- #define NRG_INT_COEFF ( 0.75f )
- #define INT_FILTER_COEFF (FL2FXCONST_DBL( 1.0f - NRG_INT_COEFF ))
- #define PEAK_DECAY_FACTOR (FL2FXCONST_DBL( 0.765928338364649f ))
- #define TRANSIENT_IMPACT_FACTOR (FL2FXCONST_DBL( 2.0 / 3.0 ))
-
- #define NO_SERIAL_ALLPASS_LINKS ( 3 )
- #define MAX_NO_PS_ENV ( 4 + 1 ) /* +1 needed for VAR_BORDER */
-
- #define MAX_DELAY_BUFFER_SIZE ( 14 )
- #define NO_DELAY_BUFFER_BANDS ( 35 )
-
- #define NO_HI_RES_BINS ( 34 )
- #define NO_MID_RES_BINS ( 20 )
- #define NO_LOW_RES_BINS ( 10 )
-
- #define FIRST_DELAY_SB ( 23 )
- #define NO_SAMPLE_DELAY_ALLPASS ( 2 )
- #define NO_DELAY_LENGTH_VECTORS ( 12 ) /* d(m): d(0)=3 + d(1)=4 + d(2)=5 */
-
- #define NO_HI_RES_IID_BINS ( NO_HI_RES_BINS )
- #define NO_HI_RES_ICC_BINS ( NO_HI_RES_BINS )
-
- #define NO_MID_RES_IID_BINS ( NO_MID_RES_BINS )
- #define NO_MID_RES_ICC_BINS ( NO_MID_RES_BINS )
-
- #define NO_LOW_RES_IID_BINS ( NO_LOW_RES_BINS )
- #define NO_LOW_RES_ICC_BINS ( NO_LOW_RES_BINS )
-
- #define SUBQMF_GROUPS ( 10 )
- #define QMF_GROUPS ( 12 )
-
- #define SUBQMF_GROUPS_HI_RES ( 32 )
- #define QMF_GROUPS_HI_RES ( 18 )
-
- #define NO_IID_GROUPS ( SUBQMF_GROUPS + QMF_GROUPS )
- #define NO_IID_GROUPS_HI_RES ( SUBQMF_GROUPS_HI_RES + QMF_GROUPS_HI_RES )
-
- #define NO_IID_STEPS ( 7 ) /* 1 .. + 7 */
- #define NO_IID_STEPS_FINE ( 15 ) /* 1 .. +15 */
- #define NO_ICC_STEPS ( 8 ) /* 0 .. + 7 */
-
- #define NO_IID_LEVELS ( 2 * NO_IID_STEPS + 1 ) /* - 7 .. + 7 */
- #define NO_IID_LEVELS_FINE ( 2 * NO_IID_STEPS_FINE + 1 ) /* -15 .. +15 */
- #define NO_ICC_LEVELS ( NO_ICC_STEPS ) /* 0 .. + 7 */
-
- #define FIXP_SQRT05 ((FIXP_DBL)0x5a827980) /* 1/SQRT2 */
-
- struct PS_DEC_COEFFICIENTS {
-
- FIXP_DBL H11r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
- FIXP_DBL H12r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
- FIXP_DBL H21r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
- FIXP_DBL H22r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
-
- FIXP_DBL DeltaH11r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
- FIXP_DBL DeltaH12r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
- FIXP_DBL DeltaH21r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
- FIXP_DBL DeltaH22r[NO_IID_GROUPS]; /*!< coefficients of the sub-subband groups */
-
- SCHAR aaIidIndexMapped[MAX_NO_PS_ENV][NO_HI_RES_IID_BINS]; /*!< The mapped IID index for all envelopes and all IID bins */
- SCHAR aaIccIndexMapped[MAX_NO_PS_ENV][NO_HI_RES_ICC_BINS]; /*!< The mapped ICC index for all envelopes and all ICC bins */
-
- };
-
-
-
-
-typedef enum {
- ppt_none = 0,
- ppt_mpeg = 1,
- ppt_drm = 2
-} PS_PAYLOAD_TYPE;
-
-
-typedef struct {
- UCHAR bPsHeaderValid; /*!< set if new header is available from bitstream */
-
- UCHAR bEnableIid; /*!< One bit denoting the presence of IID parameters */
- UCHAR bEnableIcc; /*!< One bit denoting the presence of ICC parameters */
- UCHAR bEnableExt; /*!< The PS extension layer is enabled using the enable_ext bit.
- If it is set to %1 the IPD and OPD parameters are sent.
- If it is disabled, i.e. %0, the extension layer is skipped. */
-
- UCHAR modeIid; /*!< The configuration of IID parameters (number of bands and
- quantisation grid, iid_quant) is determined by iid_mode. */
- UCHAR modeIcc; /*!< The configuration of Inter-channel Coherence parameters
- (number of bands and quantisation grid) is determined by
- icc_mode. */
-
- UCHAR freqResIid; /*!< 0=low, 1=mid or 2=high frequency resolution for iid */
- UCHAR freqResIcc; /*!< 0=low, 1=mid or 2=high frequency resolution for icc */
-
- UCHAR bFineIidQ; /*!< Use fine Iid quantisation. */
-
- UCHAR bFrameClass; /*!< The frame_class bit determines whether the parameter
- positions of the current frame are uniformly spaced
- accross the frame or they are defined using the positions
- described by border_position. */
-
- UCHAR noEnv; /*!< The number of envelopes per frame */
- UCHAR aEnvStartStop[MAX_NO_PS_ENV+1]; /*!< In case of variable parameter spacing the parameter
- positions are determined by border_position */
-
- SCHAR abIidDtFlag[MAX_NO_PS_ENV]; /*!< Deltacoding time/freq flag for IID, 0 => freq */
- SCHAR abIccDtFlag[MAX_NO_PS_ENV]; /*!< Deltacoding time/freq flag for ICC, 0 => freq */
-
- SCHAR aaIidIndex[MAX_NO_PS_ENV][NO_HI_RES_IID_BINS]; /*!< The IID index for all envelopes and all IID bins */
- SCHAR aaIccIndex[MAX_NO_PS_ENV][NO_HI_RES_ICC_BINS]; /*!< The ICC index for all envelopes and all ICC bins */
-
-} MPEG_PS_BS_DATA;
-
-
-
-struct PS_DEC {
-
- SCHAR noSubSamples;
- SCHAR noChannels;
-
- SCHAR procFrameBased; /*!< Helper to detected switching from frame based to slot based
- processing */
-
- PS_PAYLOAD_TYPE bPsDataAvail[(1)+1]; /*!< set if new data available from bitstream */
- UCHAR psDecodedPrv; /*!< set if PS has been processed in the last frame */
-
- /* helpers for frame delay line */
- UCHAR bsLastSlot; /*!< Index of last read slot. */
- UCHAR bsReadSlot; /*!< Index of current read slot for additional delay. */
- UCHAR processSlot; /*!< Index of current slot for processing (need for add. delay). */
-
-
- INT rescal;
- INT sf_IntBuffer;
-
- union { /* Bitstream data */
- MPEG_PS_BS_DATA mpeg; /*!< Struct containing all MPEG specific PS data from bitstream. */
- } bsData[(1)+1];
-
- shouldBeUnion { /* Static data */
- struct {
- SCHAR aIidPrevFrameIndex[NO_HI_RES_IID_BINS]; /*!< The IID index for previous frame */
- SCHAR aIccPrevFrameIndex[NO_HI_RES_ICC_BINS]; /*!< The ICC index for previous frame */
-
- UCHAR delayBufIndex; /*!< Pointer to where the latest sample is in buffer */
- UCHAR noSampleDelay; /*!< How many QMF samples delay is used. */
- UCHAR lastUsb; /*!< uppermost WMF delay band of last frame */
-
- UCHAR aDelayRBufIndexSer[NO_SERIAL_ALLPASS_LINKS]; /*!< Delay buffer for reverb filter */
- UCHAR aDelayBufIndexDelayQmf[NO_QMF_CHANNELS-FIRST_DELAY_SB]; /*!< Delay buffer for ICC group 20 & 21 */
-
- SCHAR scaleFactorPsDelayBuffer; /*!< Scale factor for ps delay buffer */
-
- /* hybrid filter bank delay lines */
- FIXP_DBL aaQmfDelayBufReal[(NO_QMF_CHANNELS-FIRST_DELAY_SB) + (MAX_DELAY_BUFFER_SIZE-1)*(NO_DELAY_BUFFER_BANDS-FIRST_DELAY_SB)];
- FIXP_DBL aaQmfDelayBufImag[(NO_QMF_CHANNELS-FIRST_DELAY_SB) + (MAX_DELAY_BUFFER_SIZE-1)*(NO_DELAY_BUFFER_BANDS-FIRST_DELAY_SB)];
-
- FIXP_DBL *pAaRealDelayBufferQmf[MAX_DELAY_BUFFER_SIZE]; /*!< Real part delay buffer */
- FIXP_DBL *pAaImagDelayBufferQmf[MAX_DELAY_BUFFER_SIZE]; /*!< Imaginary part delay buffer */
-
- FIXP_DBL aaRealDelayBufferQmf[NO_SAMPLE_DELAY_ALLPASS][FIRST_DELAY_SB]; /*!< Real part delay buffer */
- FIXP_DBL aaImagDelayBufferQmf[NO_SAMPLE_DELAY_ALLPASS][FIRST_DELAY_SB]; /*!< Imaginary part delay buffer*/
-
- FIXP_DBL aaRealDelayBufferSubQmf[NO_SAMPLE_DELAY_ALLPASS][NO_SUB_QMF_CHANNELS]; /*!< Real part delay buffer */
- FIXP_DBL aaImagDelayBufferSubQmf[NO_SAMPLE_DELAY_ALLPASS][NO_SUB_QMF_CHANNELS]; /*!< Imaginary part delay buffer */
-
- FIXP_DBL aaaRealDelayRBufferSerQmf[FIRST_DELAY_SB][NO_DELAY_LENGTH_VECTORS]; /*!< Real part delay buffer */
- FIXP_DBL aaaImagDelayRBufferSerQmf[FIRST_DELAY_SB][NO_DELAY_LENGTH_VECTORS]; /*!< Imaginary part delay buffer */
-
- FIXP_DBL aaaRealDelayRBufferSerSubQmf[NO_SUB_QMF_CHANNELS][NO_DELAY_LENGTH_VECTORS]; /*!< Real part delay buffer */
- FIXP_DBL aaaImagDelayRBufferSerSubQmf[NO_SUB_QMF_CHANNELS][NO_DELAY_LENGTH_VECTORS]; /*!< Imaginary part delay buffer */
-
- HYBRID hybrid; /*!< hybrid filter bank struct 1 or 2. */
-
- FIXP_DBL aPrevNrgBin[NO_MID_RES_BINS]; /*!< energy of previous frame */
- FIXP_DBL aPrevPeakDiffBin[NO_MID_RES_BINS]; /*!< peak difference of previous frame */
- FIXP_DBL aPeakDecayFastBin[NO_MID_RES_BINS]; /*!< Saved max. peak decay value per bin */
- SCHAR aPowerPrevScal[NO_MID_RES_BINS]; /*!< Last power value (each bin) of previous frame */
-
- FIXP_DBL h11rPrev[NO_IID_GROUPS]; /*!< previous calculated h(xy) coefficients */
- FIXP_DBL h12rPrev[NO_IID_GROUPS]; /*!< previous calculated h(xy) coefficients */
- FIXP_DBL h21rPrev[NO_IID_GROUPS]; /*!< previous calculated h(xy) coefficients */
- FIXP_DBL h22rPrev[NO_IID_GROUPS]; /*!< previous calculated h(xy) coefficients */
-
- PS_DEC_COEFFICIENTS coef; /*!< temporal coefficients (reusable scratch memory) */
-
- } mpeg;
-
- } specificTo;
-
-
-};
-
-typedef struct PS_DEC *HANDLE_PS_DEC;
-
-
-int CreatePsDec(HANDLE_PS_DEC *h_PS_DEC, int aacSamplesPerFrame);
-
-int DeletePsDec(HANDLE_PS_DEC *h_PS_DEC);
-
-void
-scalFilterBankValues( HANDLE_PS_DEC h_ps_d, /* parametric stereo decoder handle */
- FIXP_DBL **fixpQmfReal, /* qmf filterbank values */
- FIXP_DBL **fixpQmfImag, /* qmf filterbank values */
- int lsb, /* sbr start subband */
- int scaleFactorLowBandSplitLow,
- int scaleFactorLowBandSplitHigh,
- SCHAR *scaleFactorLowBand_lb,
- SCHAR *scaleFactorLowBand_hb,
- int scaleFactorHighBands,
- INT *scaleFactorHighBand,
- INT noCols);
-
-void
-rescalFilterBankValues( HANDLE_PS_DEC h_ps_d, /* parametric stereo decoder handle */
- FIXP_DBL **QmfBufferReal, /* qmf filterbank values */
- FIXP_DBL **QmfBufferImag, /* qmf filterbank values */
- int lsb, /* sbr start subband */
- INT noCols);
-
-
-void
-initSlotBasedRotation( HANDLE_PS_DEC h_ps_d,
- int env,
- int usb);
-
-void
-ApplyPsSlot( HANDLE_PS_DEC h_ps_d, /* parametric stereo decoder handle */
- FIXP_DBL **rIntBufferLeft, /* real values of left qmf timeslot */
- FIXP_DBL **iIntBufferLeft, /* imag values of left qmf timeslot */
- FIXP_DBL *rIntBufferRight, /* real values of right qmf timeslot */
- FIXP_DBL *iIntBufferRight); /* imag values of right qmf timeslot */
-
-
-
-#endif /* __PSDEC_H */
diff --git a/libSBRdec/src/psdec_hybrid.cpp b/libSBRdec/src/psdec_hybrid.cpp
deleted file mode 100644
index cbd0e92..0000000
--- a/libSBRdec/src/psdec_hybrid.cpp
+++ /dev/null
@@ -1,652 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-#include "psdec_hybrid.h"
-
-
-#include "fft.h"
-#include "sbr_ram.h"
-
-#include "FDK_tools_rom.h"
-#include "sbr_rom.h"
-
-/*******************************************************************************
- Functionname: InitHybridFilterBank
- *******************************************************************************
-
- Description: Init one instance of HANDLE_HYBRID stuct
-
- Arguments:
-
- Return: none
-
-*******************************************************************************/
-
-
-SBR_ERROR
-InitHybridFilterBank ( HANDLE_HYBRID hs, /*!< Handle to HYBRID struct. */
- SCHAR frameSize, /*!< Framesize (in Qmf súbband samples). */
- SCHAR noBands, /*!< Number of Qmf bands for hybrid filtering. */
- const UCHAR *pResolution ) /*!< Resolution in Qmf bands (length noBands). */
-{
- SCHAR i;
- UCHAR maxNoChannels = 0;
-
- for (i = 0; i < noBands; i++) {
- hs->pResolution[i] = pResolution[i];
- if(pResolution[i] > maxNoChannels)
- maxNoChannels = pResolution[i];
- }
-
- hs->nQmfBands = noBands;
- hs->frameSize = frameSize;
- hs->qmfBufferMove = HYBRID_FILTER_LENGTH - 1;
-
- hs->sf_mQmfBuffer = 0;
-
- return SBRDEC_OK;
-}
-
-/*******************************************************************************
- Functionname: dualChannelFiltering
- *******************************************************************************
-
- Description: fast 2-channel real-valued filtering with 6-tap delay.
-
- Arguments:
-
- Return: none
-
-*******************************************************************************/
-
-/*!
-2 channel filter
-<pre>
- Filter Coefs:
- 0.0,
- 0.01899487526049,
- 0.0,
- -0.07293139167538,
- 0.0,
- 0.30596630545168,
- 0.5,
- 0.30596630545168,
- 0.0,
- -0.07293139167538,
- 0.0,
- 0.01899487526049,
- 0.0
-
-
- Filter design:
- h[q,n] = g[n] * cos(2pi/2 * q * (n-6) ); n = 0..12, q = 0,1;
-
- -> h[0,n] = g[n] * 1;
- -> h[1,n] = g[n] * pow(-1,n);
-</pre>
-*/
-
-static void slotBasedDualChannelFiltering( const FIXP_DBL *pQmfReal,
- const FIXP_DBL *pQmfImag,
-
- FIXP_DBL *mHybridReal,
- FIXP_DBL *mHybridImag)
-{
-
- FIXP_DBL t1, t3, t5, t6;
-
- /* symmetric filter coefficients */
-
- /* you don't have to shift the result after fMult because of p2_13_20 <= 0.5 */
- t1 = fMultDiv2(p2_13_20[1] , ( (pQmfReal[1] >> 1) + (pQmfReal[11] >> 1)));
- t3 = fMultDiv2(p2_13_20[3] , ( (pQmfReal[3] >> 1) + (pQmfReal[ 9] >> 1)));
- t5 = fMultDiv2(p2_13_20[5] , ( (pQmfReal[5] >> 1) + (pQmfReal[ 7] >> 1)));
- t6 = fMultDiv2(p2_13_20[6] , (pQmfReal[6] >> 1) );
-
- mHybridReal[0] = (t1 + t3 + t5 + t6) << 2;
- mHybridReal[1] = (- t1 - t3 - t5 + t6) << 2;
-
- t1 = fMultDiv2(p2_13_20[1] , ( (pQmfImag[1] >> 1) + (pQmfImag[11] >> 1)));
- t3 = fMultDiv2(p2_13_20[3] , ( (pQmfImag[3] >> 1) + (pQmfImag[ 9] >> 1)));
- t5 = fMultDiv2(p2_13_20[5] , ( (pQmfImag[5] >> 1) + (pQmfImag[ 7] >> 1)));
- t6 = fMultDiv2(p2_13_20[6] , pQmfImag[6] >> 1 );
-
- mHybridImag[0] = (t1 + t3 + t5 + t6) << 2;
- mHybridImag[1] = (- t1 - t3 - t5 + t6) << 2;
-}
-
-
-/*******************************************************************************
- Functionname: eightChannelFiltering
- *******************************************************************************
-
- Description: fast 8-channel complex-valued filtering with 6-tap delay.
-
- Arguments:
-
- Return: none
-
-*******************************************************************************/
-/*!
- 8 channel filter
-
- Implementation using a FFT of length 8
-<pre>
- prototype filter coefficients:
- 0.00746082949812 0.02270420949825 0.04546865930473 0.07266113929591 0.09885108575264 0.11793710567217
- 0.125
- 0.11793710567217 0.09885108575264 0.07266113929591 0.04546865930473 0.02270420949825 0.00746082949812
-
- Filter design:
- N = 13; Q = 8;
- h[q,n] = g[n] * exp(j * 2 * pi / Q * (q + .5) * (n - 6)); n = 0..(N-1), q = 0..(Q-1);
-
- Time Signal: x[t];
- Filter Bank Output
- y[q,t] = conv(x[t],h[q,t]) = conv(h[q,t],x[t]) = sum(x[k] * h[q, t - k] ) = sum(h[q, k] * x[t - k] ); k = 0..(N-1);
-
- y[q,t] = x[t - 12]*h[q, 12] + x[t - 11]*h[q, 11] + x[t - 10]*h[q, 10] + x[t - 9]*h[q, 9]
- + x[t - 8]*h[q, 8] + x[t - 7]*h[q, 7]
- + x[t - 6]*h[q, 6]
- + x[t - 5]*h[q, 5] + x[t - 4]*h[q, 4]
- + x[t - 3]*h[q, 3] + x[t - 2]*h[q, 2] + x[t - 1]*h[q, 1] + x[t - 0]*h[q, 0];
-
- h'[q, n] = h[q,(N-1)-n] = g[n] * exp(j * 2 * pi / Q * (q + .5) * (6 - n)); n = 0..(N-1), q = 0..(Q-1);
-
- y[q,t] = x[t - 12]*h'[q, 0] + x[t - 11]*h'[q, 1] + x[t - 10]*h'[q, 2] + x[t - 9]*h'[q, 3]
- + x[t - 8]*h'[q, 4] + x[t - 7]*h'[q, 5]
- + x[t - 6]*h'[q, 6]
- + x[t - 5]*h'[q, 7] + x[t - 4]*h'[q, 8]
- + x[t - 3]*h'[q, 9] + x[t - 2]*h'[q, 10] + x[t - 1]*h'[q, 11] + x[t - 0]*h'[q, 12];
-
- Try to split off FFT Modulation Term:
- FFT(x[t], q) = sum(x[t+k]*exp(-j*2*pi/N *q * k))
- c m
- Step 1: h'[q,n] = g[n] * ( exp(j * 2 * pi / 8 * .5 * (6 - n)) ) * ( exp (j * 2 * pi / 8 * q * (6 - n)) );
-
- h'[q,n] = g[n] *c[n] * m[q,n]; (see above)
- c[n] = exp( j * 2 * pi / 8 * .5 * (6 - n) );
- m[q,n] = exp( j * 2 * pi / 8 * q * (6 - n) );
-
- y[q,t] = x[t - 0]*g[0]*c[0]*m[q,0] + x[t - 1]*g[1]*c[ 1]*m[q, 1] + ...
- ... + x[t - 12]*g[2]*c[12]*m[q,12];
-
- |
- n m *exp(-j*2*pi) | n' fft
--------------------------------------------------------------------------------------------------------------------------
- 0 exp( j * 2 * pi / 8 * q * 6) -> exp(-j * 2 * pi / 8 * q * 2) | 2 exp(-j * 2 * pi / 8 * q * 0)
- 1 exp( j * 2 * pi / 8 * q * 5) -> exp(-j * 2 * pi / 8 * q * 3) | 3 exp(-j * 2 * pi / 8 * q * 1)
- 2 exp( j * 2 * pi / 8 * q * 4) -> exp(-j * 2 * pi / 8 * q * 4) | 4 exp(-j * 2 * pi / 8 * q * 2)
- 3 exp( j * 2 * pi / 8 * q * 3) -> exp(-j * 2 * pi / 8 * q * 5) | 5 exp(-j * 2 * pi / 8 * q * 3)
- 4 exp( j * 2 * pi / 8 * q * 2) -> exp(-j * 2 * pi / 8 * q * 6) | 6 exp(-j * 2 * pi / 8 * q * 4)
- 5 exp( j * 2 * pi / 8 * q * 1) -> exp(-j * 2 * pi / 8 * q * 7) | 7 exp(-j * 2 * pi / 8 * q * 5)
- 6 exp( j * 2 * pi / 8 * q * 0) | 0 exp(-j * 2 * pi / 8 * q * 6)
- 7 exp(-j * 2 * pi / 8 * q * 1) | 1 exp(-j * 2 * pi / 8 * q * 7)
- 8 exp(-j * 2 * pi / 8 * q * 2) | 2
- 9 exp(-j * 2 * pi / 8 * q * 3) | 3
- 10 exp(-j * 2 * pi / 8 * q * 4) | 4
- 11 exp(-j * 2 * pi / 8 * q * 5) | 5
- 12 exp(-j * 2 * pi / 8 * q * 6) | 6
-
-
- now use fft modulation coefficients
- m[6] = = fft[0]
- m[7] = = fft[1]
- m[8] = m[ 0] = fft[2]
- m[9] = m[ 1] = fft[3]
- m[10] = m[ 2] = fft[4]
- m[11] = m[ 3] = fft[5]
- m[12] = m[ 4] = fft[6]
- m[ 5] = fft[7]
-
- y[q,t] = ( x[t- 6]*g[ 6]*c[ 6] ) * fft[q,0] +
- ( x[t- 7]*g[ 7]*c[ 7] ) * fft[q,1] +
- ( x[t- 0]*g[ 0]*c[ 0] + x[t- 8]*g[ 8]*c[ 8] ) * fft[q,2] +
- ( x[t- 1]*g[ 1]*c[ 1] + x[t- 9]*g[ 9]*c[ 9] ) * fft[q,3] +
- ( x[t- 2]*g[ 2]*c[ 2] + x[t-10]*g[10]*c[10] ) * fft[q,4] +
- ( x[t- 3]*g[ 3]*c[ 3] + x[t-11]*g[11]*c[11] ) * fft[q,5] +
- ( x[t- 4]*g[ 4]*c[ 4] + x[t-12]*g[12]*c[12] ) * fft[q,6] +
- ( x[t- 5]*g[ 5]*c[ 5] ) * fft[q,7];
-
- pre twiddle factors c[n] = exp(j * 2 * pi / 8 * .5 * (6 - n));
- n c] | n c[n] | n c[n]
----------------------------------------------------------------------------------------------------
- 0 exp( j * 6 * pi / 8) | 1 exp( j * 5 * pi / 8) | 2 exp( j * 4 * pi / 8)
- 3 exp( j * 3 * pi / 8) | 4 exp( j * 2 * pi / 8) | 5 exp( j * 1 * pi / 8)
- 6 exp( j * 0 * pi / 8) | 7 exp(-j * 1 * pi / 8) | 8 exp(-j * 2 * pi / 8)
- 9 exp(-j * 3 * pi / 8) | 10 exp(-j * 4 * pi / 8) | 11 exp(-j * 5 * pi / 8)
- 12 exp(-j * 6 * pi / 8) | |
-</pre>
-*/
-
-/* defining rotation factors for *ChannelFiltering */
-
-#define cos0Pi FL2FXCONST_DBL( 1.f)
-#define sin0Pi FL2FXCONST_DBL( 0.f)
-
-#define cos1Pi FL2FXCONST_DBL(-1.f)
-#define sin1Pi FL2FXCONST_DBL( 0.f)
-
-#define cos1Pi_2 FL2FXCONST_DBL( 0.f)
-#define sin1Pi_2 FL2FXCONST_DBL( 1.f)
-
-#define cos1Pi_3 FL2FXCONST_DBL( 0.5f)
-#define sin1Pi_3 FL2FXCONST_DBL( 0.86602540378444f)
-
-#define cos0Pi_4 cos0Pi
-#define cos1Pi_4 FL2FXCONST_DBL(0.70710678118655f)
-#define cos2Pi_4 cos1Pi_2
-#define cos3Pi_4 (-cos1Pi_4)
-#define cos4Pi_4 (-cos0Pi_4)
-#define cos5Pi_4 cos3Pi_4
-#define cos6Pi_4 cos2Pi_4
-
-#define sin0Pi_4 sin0Pi
-#define sin1Pi_4 FL2FXCONST_DBL(0.70710678118655f)
-#define sin2Pi_4 sin1Pi_2
-#define sin3Pi_4 sin1Pi_4
-#define sin4Pi_4 sin0Pi_4
-#define sin5Pi_4 (-sin3Pi_4)
-#define sin6Pi_4 (-sin2Pi_4)
-
-#define cos0Pi_8 cos0Pi
-#define cos1Pi_8 FL2FXCONST_DBL(0.92387953251129f)
-#define cos2Pi_8 cos1Pi_4
-#define cos3Pi_8 FL2FXCONST_DBL(0.38268343236509f)
-#define cos4Pi_8 cos2Pi_4
-#define cos5Pi_8 (-cos3Pi_8)
-#define cos6Pi_8 (-cos2Pi_8)
-
-#define sin0Pi_8 sin0Pi
-#define sin1Pi_8 cos3Pi_8
-#define sin2Pi_8 sin1Pi_4
-#define sin3Pi_8 cos1Pi_8
-#define sin4Pi_8 sin2Pi_4
-#define sin5Pi_8 sin3Pi_8
-#define sin6Pi_8 sin1Pi_4
-
-#if defined(ARCH_PREFER_MULT_32x16)
- #define FIXP_HYB FIXP_SGL
- #define FIXP_CAST FX_DBL2FX_SGL
-#else
- #define FIXP_HYB FIXP_DBL
- #define FIXP_CAST
-#endif
-
-static const FIXP_HYB cr[13] =
-{
- FIXP_CAST(cos6Pi_8), FIXP_CAST(cos5Pi_8), FIXP_CAST(cos4Pi_8),
- FIXP_CAST(cos3Pi_8), FIXP_CAST(cos2Pi_8), FIXP_CAST(cos1Pi_8),
- FIXP_CAST(cos0Pi_8),
- FIXP_CAST(cos1Pi_8), FIXP_CAST(cos2Pi_8), FIXP_CAST(cos3Pi_8),
- FIXP_CAST(cos4Pi_8), FIXP_CAST(cos5Pi_8), FIXP_CAST(cos6Pi_8)
-};
-
-static const FIXP_HYB ci[13] =
-{
- FIXP_CAST( sin6Pi_8), FIXP_CAST( sin5Pi_8), FIXP_CAST( sin4Pi_8),
- FIXP_CAST( sin3Pi_8), FIXP_CAST( sin2Pi_8), FIXP_CAST( sin1Pi_8),
- FIXP_CAST( sin0Pi_8) ,
- FIXP_CAST(-sin1Pi_8), FIXP_CAST(-sin2Pi_8), FIXP_CAST(-sin3Pi_8),
- FIXP_CAST(-sin4Pi_8), FIXP_CAST(-sin5Pi_8), FIXP_CAST(-sin6Pi_8)
-};
-
-static void slotBasedEightChannelFiltering( const FIXP_DBL *pQmfReal,
- const FIXP_DBL *pQmfImag,
-
- FIXP_DBL *mHybridReal,
- FIXP_DBL *mHybridImag)
-{
-
- int bin;
- FIXP_DBL _fft[128 + ALIGNMENT_DEFAULT - 1];
- FIXP_DBL *fft = (FIXP_DBL *)ALIGN_PTR(_fft);
-
-#if defined(ARCH_PREFER_MULT_32x16)
- const FIXP_SGL *p = p8_13_20; /* BASELINE_PS */
-#else
- const FIXP_DBL *p = p8_13_20; /* BASELINE_PS */
-#endif
-
- /* pre twiddeling */
-
- /* x*(a*b + c*d) = fMultDiv2(x, fMultAddDiv2(fMultDiv2(a, b), c, d)) */
- /* x*(a*b - c*d) = fMultDiv2(x, fMultSubDiv2(fMultDiv2(a, b), c, d)) */
- FIXP_DBL accu1, accu2, accu3, accu4;
-
- #define TWIDDLE_1(n_0,n_1,n_2) \
- cplxMultDiv2(&accu1, &accu2, pQmfReal[n_0], pQmfImag[n_0], cr[n_0], ci[n_0]); \
- accu1 = fMultDiv2(p[n_0], accu1); \
- accu2 = fMultDiv2(p[n_0], accu2); \
- cplxMultDiv2(&accu3, &accu4, pQmfReal[n_1], pQmfImag[n_1], cr[n_1], ci[n_1]); \
- accu3 = fMultDiv2(p[n_1], accu3); \
- accu4 = fMultDiv2(p[n_1], accu4); \
- fft[FIXP_FFT_IDX_R(n_2)] = accu1 + accu3; \
- fft[FIXP_FFT_IDX_I(n_2)] = accu2 + accu4;
-
- #define TWIDDLE_0(n_0,n_1) \
- cplxMultDiv2(&accu1, &accu2, pQmfReal[n_0], pQmfImag[n_0], cr[n_0], ci[n_0]); \
- fft[FIXP_FFT_IDX_R(n_1)] = fMultDiv2(p[n_0], accu1); \
- fft[FIXP_FFT_IDX_I(n_1)] = fMultDiv2(p[n_0], accu2);
-
- TWIDDLE_0( 6, 0)
- TWIDDLE_0( 7, 1)
-
- TWIDDLE_1( 0, 8, 2)
- TWIDDLE_1( 1, 9, 3)
- TWIDDLE_1( 2,10, 4)
- TWIDDLE_1( 3,11, 5)
- TWIDDLE_1( 4,12, 6)
-
- TWIDDLE_0( 5, 7)
-
- fft_8 (fft);
-
- /* resort fft data into output array*/
- for(bin=0; bin<8;bin++ ) {
- mHybridReal[bin] = fft[FIXP_FFT_IDX_R(bin)] << 4;
- mHybridImag[bin] = fft[FIXP_FFT_IDX_I(bin)] << 4;
- }
-}
-
-
-/*******************************************************************************
- Functionname: fillHybridDelayLine
- *******************************************************************************
-
- Description: The delay line of the hybrid filter is filled and copied from
- left to right.
-
- Return: none
-
-*******************************************************************************/
-
-void
-fillHybridDelayLine( FIXP_DBL **fixpQmfReal, /*!< Qmf real Values */
- FIXP_DBL **fixpQmfImag, /*!< Qmf imag Values */
- FIXP_DBL fixpHybridLeftR[12], /*!< Hybrid real Values left channel */
- FIXP_DBL fixpHybridLeftI[12], /*!< Hybrid imag Values left channel */
- FIXP_DBL fixpHybridRightR[12], /*!< Hybrid real Values right channel */
- FIXP_DBL fixpHybridRightI[12], /*!< Hybrid imag Values right channel */
- HANDLE_HYBRID hHybrid )
-{
- int i;
-
- for (i = 0; i < HYBRID_FILTER_DELAY; i++) {
- slotBasedHybridAnalysis ( fixpQmfReal[i],
- fixpQmfReal[i],
- fixpHybridLeftR,
- fixpHybridLeftI,
- hHybrid );
- }
-
- FDKmemcpy(fixpHybridRightR, fixpHybridLeftR, sizeof(FIXP_DBL)*NO_SUB_QMF_CHANNELS);
- FDKmemcpy(fixpHybridRightI, fixpHybridLeftI, sizeof(FIXP_DBL)*NO_SUB_QMF_CHANNELS);
-}
-
-
-/*******************************************************************************
- Functionname: slotBasedHybridAnalysis
- *******************************************************************************
-
- Description: The lower QMF subbands are further split to provide better
- frequency resolution for PS processing.
-
- Return: none
-
-*******************************************************************************/
-
-
-void
-slotBasedHybridAnalysis ( FIXP_DBL *fixpQmfReal, /*!< Qmf real Values */
- FIXP_DBL *fixpQmfImag, /*!< Qmf imag Values */
-
- FIXP_DBL fixpHybridReal[12], /*!< Hybrid real Values */
- FIXP_DBL fixpHybridImag[12], /*!< Hybrid imag Values */
-
- HANDLE_HYBRID hHybrid)
-{
- int k, band;
- HYBRID_RES hybridRes;
- int chOffset = 0;
-
- C_ALLOC_SCRATCH_START(pTempRealSlot, FIXP_DBL, 4*HYBRID_FILTER_LENGTH);
-
- FIXP_DBL *pTempImagSlot = pTempRealSlot + HYBRID_FILTER_LENGTH;
- FIXP_DBL *pWorkRealSlot = pTempImagSlot + HYBRID_FILTER_LENGTH;
- FIXP_DBL *pWorkImagSlot = pWorkRealSlot + HYBRID_FILTER_LENGTH;
-
- /*!
- Hybrid filtering is applied to the first hHybrid->nQmfBands QMF bands (3 when 10 or 20 stereo bands
- are used, 5 when 34 stereo bands are used). For the remaining QMF bands a delay would be necessary.
- But there is no need to implement a delay because there is a look-ahead of HYBRID_FILTER_DELAY = 6
- QMF samples in the low-band buffer.
- */
-
- for(band = 0; band < hHybrid->nQmfBands; band++) {
-
- /* get hybrid resolution per qmf band */
- /* in case of baseline ps 10/20 band stereo mode : */
- /* */
- /* qmfBand[0] : 8 ( HYBRID_8_CPLX ) */
- /* qmfBand[1] : 2 ( HYBRID_2_REAL ) */
- /* qmfBand[2] : 2 ( HYBRID_2_REAL ) */
- /* */
- /* (split the 3 lower qmf band to 12 hybrid bands) */
-
- hybridRes = (HYBRID_RES)hHybrid->pResolution[band];
-
- FDKmemcpy(pWorkRealSlot, hHybrid->mQmfBufferRealSlot[band], hHybrid->qmfBufferMove * sizeof(FIXP_DBL));
- FDKmemcpy(pWorkImagSlot, hHybrid->mQmfBufferImagSlot[band], hHybrid->qmfBufferMove * sizeof(FIXP_DBL));
-
- pWorkRealSlot[hHybrid->qmfBufferMove] = fixpQmfReal[band];
- pWorkImagSlot[hHybrid->qmfBufferMove] = fixpQmfImag[band];
-
- FDKmemcpy(hHybrid->mQmfBufferRealSlot[band], pWorkRealSlot + 1, hHybrid->qmfBufferMove * sizeof(FIXP_DBL));
- FDKmemcpy(hHybrid->mQmfBufferImagSlot[band], pWorkImagSlot + 1, hHybrid->qmfBufferMove * sizeof(FIXP_DBL));
-
- if (fixpQmfReal) {
-
- /* actual filtering only if output signal requested */
- switch( hybridRes ) {
-
- /* HYBRID_2_REAL & HYBRID_8_CPLX are only needful for baseline ps */
- case HYBRID_2_REAL:
-
- slotBasedDualChannelFiltering( pWorkRealSlot,
- pWorkImagSlot,
- pTempRealSlot,
- pTempImagSlot);
- break;
-
- case HYBRID_8_CPLX:
-
- slotBasedEightChannelFiltering( pWorkRealSlot,
- pWorkImagSlot,
- pTempRealSlot,
- pTempImagSlot);
- break;
-
- default:
- FDK_ASSERT(0);
- }
-
- for(k = 0; k < (SCHAR)hybridRes; k++) {
- fixpHybridReal [chOffset + k] = pTempRealSlot[k];
- fixpHybridImag [chOffset + k] = pTempImagSlot[k];
- }
- chOffset += hybridRes;
- } /* if (mHybridReal) */
- }
-
- /* group hybrid channels 3+4 -> 3 and 2+5 -> 2 */
- fixpHybridReal[3] += fixpHybridReal[4];
- fixpHybridImag[3] += fixpHybridImag[4];
- fixpHybridReal[4] = (FIXP_DBL)0;
- fixpHybridImag[4] = (FIXP_DBL)0;
-
- fixpHybridReal[2] += fixpHybridReal[5];
- fixpHybridImag[2] += fixpHybridImag[5];
- fixpHybridReal[5] = (FIXP_DBL)0;
- fixpHybridImag[5] = (FIXP_DBL)0;
-
- /* free memory on scratch */
- C_ALLOC_SCRATCH_END(pTempRealSlot, FIXP_DBL, 4*HYBRID_FILTER_LENGTH);
-
-}
-
-
-/*******************************************************************************
- Functionname: slotBasedHybridSynthesis
- *******************************************************************************
-
- Description: The coefficients offering higher resolution for the lower QMF
- channel are simply added prior to the synthesis with the 54
- subbands QMF.
-
- Arguments:
-
- Return: none
-
-*******************************************************************************/
-
-/*! <pre>
- l,r0(n) ---\
- l,r1(n) ---- + --\
- l,r2(n) ---/ \
- + --> F0(w)
- l,r3(n) ---\ /
- l,r4(n) ---- + --/
- l,r5(n) ---/
-
-
- l,r6(n) ---\
- + ---------> F1(w)
- l,r7(n) ---/
-
-
- l,r8(n) ---\
- + ---------> F2(w)
- l,r9(n) ---/
-
- </pre>
- Hybrid QMF synthesis filterbank for the 10 and 20 stereo-bands configurations. The
- coefficients offering higher resolution for the lower QMF channel are simply added
- prior to the synthesis with the 54 subbands QMF.
-
- [see ISO/IEC 14496-3:2001/FDAM 2:2004(E) - Page 52]
-*/
-
-
-void
-slotBasedHybridSynthesis ( FIXP_DBL *fixpHybridReal, /*!< Hybrid real Values */
- FIXP_DBL *fixpHybridImag, /*!< Hybrid imag Values */
- FIXP_DBL *fixpQmfReal, /*!< Qmf real Values */
- FIXP_DBL *fixpQmfImag, /*!< Qmf imag Values */
- HANDLE_HYBRID hHybrid ) /*!< Handle to HYBRID struct. */
-{
- int k, band;
-
- HYBRID_RES hybridRes;
- int chOffset = 0;
-
- for(band = 0; band < hHybrid->nQmfBands; band++) {
-
- FIXP_DBL qmfReal = FL2FXCONST_DBL(0.f);
- FIXP_DBL qmfImag = FL2FXCONST_DBL(0.f);
- hybridRes = (HYBRID_RES)hHybrid->pResolution[band];
-
- for(k = 0; k < (SCHAR)hybridRes; k++) {
- qmfReal += fixpHybridReal[chOffset + k];
- qmfImag += fixpHybridImag[chOffset + k];
- }
-
- fixpQmfReal[band] = qmfReal;
- fixpQmfImag[band] = qmfImag;
-
- chOffset += hybridRes;
- }
-}
-
-
-
diff --git a/libSBRdec/src/psdec_hybrid.h b/libSBRdec/src/psdec_hybrid.h
deleted file mode 100644
index fcf9e3e..0000000
--- a/libSBRdec/src/psdec_hybrid.h
+++ /dev/null
@@ -1,165 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-#ifndef __HYBRID_H
-#define __HYBRID_H
-
-#include "sbrdecoder.h"
-
-
-#define HYBRID_FILTER_LENGTH 13
-#define HYBRID_FILTER_DELAY 6
-
-
-#define FAST_FILTER2
-#define FAST_FILTER4
-#define FAST_FILTER8
-#define FAST_FILTER12
-
-#define FFT_IDX_R(a) (2*a)
-#define FFT_IDX_I(a) (2*a+1)
-
-#define FIXP_FFT_IDX_R(a) (a<<1)
-#define FIXP_FFT_IDX_I(a) ((a<<1) + 1)
-
-
-typedef enum {
-
- HYBRID_2_REAL = 2,
- HYBRID_4_CPLX = 4,
- HYBRID_8_CPLX = 8,
- HYBRID_12_CPLX = 12
-
-} HYBRID_RES;
-
-typedef struct
-{
- SCHAR nQmfBands;
- SCHAR frameSize;
- SCHAR qmfBufferMove;
-
- UCHAR pResolution[3];
-
- FIXP_DBL mQmfBufferRealSlot[3][HYBRID_FILTER_LENGTH]; /**< Stores old Qmf samples. */
- FIXP_DBL mQmfBufferImagSlot[3][HYBRID_FILTER_LENGTH];
- SCHAR sf_mQmfBuffer;
-
-} HYBRID;
-
-typedef HYBRID *HANDLE_HYBRID;
-
-void
-fillHybridDelayLine( FIXP_DBL **fixpQmfReal,
- FIXP_DBL **fixpQmfImag,
- FIXP_DBL fixpHybridLeftR[12],
- FIXP_DBL fixpHybridLeftI[12],
- FIXP_DBL fixpHybridRightR[12],
- FIXP_DBL fixpHybridRightI[12],
- HANDLE_HYBRID hHybrid );
-
-void
-slotBasedHybridAnalysis ( FIXP_DBL *fixpQmfReal,
- FIXP_DBL *fixpQmfImag,
-
- FIXP_DBL *fixpHybridReal,
- FIXP_DBL *fixpHybridImag,
-
- HANDLE_HYBRID hHybrid);
-
-
-void
-slotBasedHybridSynthesis ( FIXP_DBL *fixpHybridReal,
- FIXP_DBL *fixpHybridImag,
-
- FIXP_DBL *fixpQmfReal,
- FIXP_DBL *fixpQmfImag,
-
- HANDLE_HYBRID hHybrid );
-
-SBR_ERROR InitHybridFilterBank ( HANDLE_HYBRID hHybrid,
- SCHAR frameSize,
- SCHAR noBands,
- const UCHAR *pResolution );
-
-
-#endif /* __HYBRID_H */
diff --git a/libSBRdec/src/sbr_crc.cpp b/libSBRdec/src/sbr_crc.cpp
deleted file mode 100644
index a495f10..0000000
--- a/libSBRdec/src/sbr_crc.cpp
+++ /dev/null
@@ -1,183 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief CRC check coutines
-*/
-
-#include "sbr_crc.h"
-
-#include "FDK_bitstream.h"
-#include "transcendent.h"
-
-#define MAXCRCSTEP 16
-#define MAXCRCSTEP_LD 4
-
-/*!
- \brief crc calculation
-*/
-static ULONG
-calcCRC (HANDLE_CRC hCrcBuf, ULONG bValue, int nBits)
-{
- int i;
- ULONG bMask = (1UL << (nBits - 1));
-
- for (i = 0; i < nBits; i++, bMask >>= 1) {
- USHORT flag = (hCrcBuf->crcState & hCrcBuf->crcMask) ? 1 : 0;
- USHORT flag1 = (bMask & bValue) ? 1 : 0;
-
- flag ^= flag1;
- hCrcBuf->crcState <<= 1;
- if (flag)
- hCrcBuf->crcState ^= hCrcBuf->crcPoly;
- }
-
- return (hCrcBuf->crcState);
-}
-
-
-/*!
- \brief crc
-*/
-static int
-getCrc (HANDLE_FDK_BITSTREAM hBs, ULONG NrBits)
-{
- int i;
- CRC_BUFFER CrcBuf;
-
- CrcBuf.crcState = SBR_CRC_START;
- CrcBuf.crcPoly = SBR_CRC_POLY;
- CrcBuf.crcMask = SBR_CRC_MASK;
-
- int CrcStep = NrBits>>MAXCRCSTEP_LD;
-
- int CrcNrBitsRest = (NrBits - CrcStep * MAXCRCSTEP);
- ULONG bValue;
-
- for (i = 0; i < CrcStep; i++) {
- bValue = FDKreadBits (hBs, MAXCRCSTEP);
- calcCRC (&CrcBuf, bValue, MAXCRCSTEP);
- }
-
- bValue = FDKreadBits (hBs, CrcNrBitsRest);
- calcCRC (&CrcBuf, bValue, CrcNrBitsRest);
-
- return (CrcBuf.crcState & SBR_CRC_RANGE);
-
-}
-
-
-/*!
- \brief crc interface
- \return 1: CRC OK, 0: CRC check failure
-*/
-int
-SbrCrcCheck (HANDLE_FDK_BITSTREAM hBs, /*!< handle to bit-buffer */
- LONG NrBits) /*!< max. CRC length */
-{
- int crcResult = 1;
- ULONG NrCrcBits;
- ULONG crcCheckResult;
- LONG NrBitsAvailable;
- ULONG crcCheckSum;
-
- crcCheckSum = FDKreadBits (hBs, 10);
-
- NrBitsAvailable = FDKgetValidBits(hBs);
- if (NrBitsAvailable <= 0){
- return 0;
- }
-
- NrCrcBits = fixMin ((INT)NrBits, (INT)NrBitsAvailable);
-
- crcCheckResult = getCrc (hBs, NrCrcBits);
- FDKpushBack(hBs, (NrBitsAvailable - FDKgetValidBits(hBs)) );
-
-
- if (crcCheckResult != crcCheckSum) {
- crcResult = 0;
- }
-
- return (crcResult);
-}
diff --git a/libSBRdec/src/sbr_crc.h b/libSBRdec/src/sbr_crc.h
deleted file mode 100644
index 30b8329..0000000
--- a/libSBRdec/src/sbr_crc.h
+++ /dev/null
@@ -1,123 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief CRC checking routines
-*/
-#ifndef __SBR_CRC_H
-#define __SBR_CRC_H
-
-#include "sbrdecoder.h"
-
-#include "FDK_bitstream.h"
-
-/* some useful crc polynoms:
-
-crc5: x^5+x^4+x^2+x^1+1
-crc6: x^6+x^5+x^3+x^2+x+1
-crc7: x^7+x^6+x^2+1
-crc8: x^8+x^2+x+x+1
-*/
-
-/* default SBR CRC */ /* G(x) = x^10 + x^9 + x^5 + x^4 + x + 1 */
-#define SBR_CRC_POLY 0x0233
-#define SBR_CRC_MASK 0x0200
-#define SBR_CRC_START 0x0000
-#define SBR_CRC_RANGE 0x03FF
-
-typedef struct
-{
- USHORT crcState;
- USHORT crcMask;
- USHORT crcPoly;
-}
-CRC_BUFFER;
-
-typedef CRC_BUFFER *HANDLE_CRC;
-
-int SbrCrcCheck (HANDLE_FDK_BITSTREAM hBitBuf,
- LONG NrCrcBits);
-
-
-#endif
diff --git a/libSBRdec/src/sbr_deb.cpp b/libSBRdec/src/sbr_deb.cpp
deleted file mode 100644
index 9baff2e..0000000
--- a/libSBRdec/src/sbr_deb.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Print selected debug messages
-*/
-
-#include "sbr_deb.h"
-
diff --git a/libSBRdec/src/sbr_deb.h b/libSBRdec/src/sbr_deb.h
deleted file mode 100644
index cb954ba..0000000
--- a/libSBRdec/src/sbr_deb.h
+++ /dev/null
@@ -1,94 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Debugging aids
-*/
-
-#ifndef __SBR_DEB_H
-#define __SBR_DEB_H
-
-#include "sbrdecoder.h"
-
-#endif
diff --git a/libSBRdec/src/sbr_dec.cpp b/libSBRdec/src/sbr_dec.cpp
deleted file mode 100644
index 1282338..0000000
--- a/libSBRdec/src/sbr_dec.cpp
+++ /dev/null
@@ -1,1050 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Sbr decoder
- This module provides the actual decoder implementation. The SBR data (side information) is already
- decoded. Only three functions are provided:
-
- \li 1.) createSbrDec(): One time initialization
- \li 2.) resetSbrDec(): Called by sbr_Apply() when the information contained in an SBR_HEADER_ELEMENT requires a reset
- and recalculation of important SBR structures.
- \li 3.) sbr_dec(): The actual decoder. Calls the different tools such as filterbanks, lppTransposer(), and calculateSbrEnvelope()
- [the envelope adjuster].
-
- \sa sbr_dec(), \ref documentationOverview
-*/
-
-#include "sbr_dec.h"
-
-#include "sbr_ram.h"
-#include "env_extr.h"
-#include "env_calc.h"
-#include "scale.h"
-
-#include "genericStds.h"
-
-#include "sbrdec_drc.h"
-
-
-
-static void assignLcTimeSlots( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */
- FIXP_DBL **QmfBufferReal,
- int noCols )
-{
- int slot, i;
- FIXP_DBL *ptr;
-
- /* Number of QMF timeslots in the overlap buffer: */
- ptr = hSbrDec->pSbrOverlapBuffer;
- for(slot=0; slot<hSbrDec->LppTrans.pSettings->overlap; slot++) {
- QmfBufferReal[slot] = ptr; ptr += (64);
- }
-
- /* Assign timeslots to Workbuffer1 */
- ptr = hSbrDec->WorkBuffer1;
- for(i=0; i<noCols; i++) {
- QmfBufferReal[slot] = ptr; ptr += (64);
- slot++;
- }
-}
-
-
-static void assignHqTimeSlots( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */
- FIXP_DBL **QmfBufferReal,
- FIXP_DBL **QmfBufferImag,
- int noCols )
-{
- FIXP_DBL *ptr;
- int slot;
-
- /* Number of QMF timeslots in one half of a frame (size of Workbuffer1 or 2): */
- int halflen = (noCols >> 1) + hSbrDec->LppTrans.pSettings->overlap;
- int totCols = noCols + hSbrDec->LppTrans.pSettings->overlap;
-
- /* Number of QMF timeslots in the overlap buffer: */
- ptr = hSbrDec->pSbrOverlapBuffer;
- for(slot=0; slot<hSbrDec->LppTrans.pSettings->overlap; slot++) {
- QmfBufferReal[slot] = ptr; ptr += (64);
- QmfBufferImag[slot] = ptr; ptr += (64);
- }
-
- /* Assign first half of timeslots to Workbuffer1 */
- ptr = hSbrDec->WorkBuffer1;
- for(; slot<halflen; slot++) {
- QmfBufferReal[slot] = ptr; ptr += (64);
- QmfBufferImag[slot] = ptr; ptr += (64);
- }
-
- /* Assign second half of timeslots to Workbuffer2 */
- ptr = hSbrDec->WorkBuffer2;
- for(; slot<totCols; slot++) {
- QmfBufferReal[slot] = ptr; ptr += (64);
- QmfBufferImag[slot] = ptr; ptr += (64);
- }
-}
-
-
-static void assignTimeSlots( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */
- int noCols,
- int useLP )
-{
- /* assign qmf time slots */
- hSbrDec->useLP = useLP;
- if (useLP) {
- hSbrDec->SynthesisQMF.flags |= QMF_FLAG_LP;
- hSbrDec->AnalysiscQMF.flags |= QMF_FLAG_LP;
- } else {
- hSbrDec->SynthesisQMF.flags &= ~QMF_FLAG_LP;
- hSbrDec->AnalysiscQMF.flags &= ~QMF_FLAG_LP;
- }
- if (!useLP)
- assignHqTimeSlots( hSbrDec, hSbrDec->QmfBufferReal, hSbrDec->QmfBufferImag, noCols );
- else
- {
- assignLcTimeSlots( hSbrDec, hSbrDec->QmfBufferReal, noCols );
- }
-}
-
-static void changeQmfType( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */
- int useLdTimeAlign )
-{
- UINT synQmfFlags = hSbrDec->SynthesisQMF.flags;
- UINT anaQmfFlags = hSbrDec->AnalysiscQMF.flags;
- int resetSynQmf = 0;
- int resetAnaQmf = 0;
-
- /* assign qmf type */
- if (useLdTimeAlign) {
- if (synQmfFlags & QMF_FLAG_CLDFB) {
- /* change the type to MPSLD */
- synQmfFlags &= ~QMF_FLAG_CLDFB;
- synQmfFlags |= QMF_FLAG_MPSLDFB;
- resetSynQmf = 1;
- }
- if (anaQmfFlags & QMF_FLAG_CLDFB) {
- /* change the type to MPSLD */
- anaQmfFlags &= ~QMF_FLAG_CLDFB;
- anaQmfFlags |= QMF_FLAG_MPSLDFB;
- resetAnaQmf = 1;
- }
- } else {
- if (synQmfFlags & QMF_FLAG_MPSLDFB) {
- /* change the type to CLDFB */
- synQmfFlags &= ~QMF_FLAG_MPSLDFB;
- synQmfFlags |= QMF_FLAG_CLDFB;
- resetSynQmf = 1;
- }
- if (anaQmfFlags & QMF_FLAG_MPSLDFB) {
- /* change the type to CLDFB */
- anaQmfFlags &= ~QMF_FLAG_MPSLDFB;
- anaQmfFlags |= QMF_FLAG_CLDFB;
- resetAnaQmf = 1;
- }
- }
-
- if (resetAnaQmf) {
- int qmfErr = qmfInitAnalysisFilterBank (
- &hSbrDec->AnalysiscQMF,
- hSbrDec->anaQmfStates,
- hSbrDec->AnalysiscQMF.no_col,
- hSbrDec->AnalysiscQMF.lsb,
- hSbrDec->AnalysiscQMF.usb,
- hSbrDec->AnalysiscQMF.no_channels,
- anaQmfFlags | QMF_FLAG_KEEP_STATES
- );
- if (qmfErr != 0) {
- FDK_ASSERT(0);
- }
- }
-
- if (resetSynQmf) {
- int qmfErr = qmfInitSynthesisFilterBank (
- &hSbrDec->SynthesisQMF,
- hSbrDec->pSynQmfStates,
- hSbrDec->SynthesisQMF.no_col,
- hSbrDec->SynthesisQMF.lsb,
- hSbrDec->SynthesisQMF.usb,
- hSbrDec->SynthesisQMF.no_channels,
- synQmfFlags | QMF_FLAG_KEEP_STATES
- );
-
- if (qmfErr != 0) {
- FDK_ASSERT(0);
- }
- }
-}
-
-
-/*!
- \brief SBR decoder core function for one channel
-
- \image html BufferMgmtDetailed-1632.png
-
- Besides the filter states of the QMF filter bank and the LPC-states of
- the LPP-Transposer, processing is mainly based on four buffers:
- #timeIn, #timeOut, #WorkBuffer2 and #OverlapBuffer. The #WorkBuffer2
- is reused for all channels and might be used by the core decoder, a
- static overlap buffer is required for each channel. Du to in-place
- processing, #timeIn and #timeOut point to identical locations.
-
- The spectral data is organized in so-called slots, each slot
- containing 64 bands of complex data. The number of slots per frame is
- dependend on the frame size. For mp3PRO, there are 18 slots per frame
- and 6 slots per #OverlapBuffer. It is not necessary to have the slots
- in located consecutive address ranges.
-
- To optimize memory usage and to minimize the number of memory
- accesses, the memory management is organized as follows (Slot numbers
- based on mp3PRO):
-
- 1.) Input time domain signal is located in #timeIn, the last slots
- (0..5) of the spectral data of the previous frame are located in the
- #OverlapBuffer. In addition, #frameData of the current frame resides
- in the upper part of #timeIn.
-
- 2.) During the cplxAnalysisQmfFiltering(), 32 samples from #timeIn are transformed
- into a slot of up to 32 complex spectral low band values at a
- time. The first spectral slot -- nr. 6 -- is written at slot number
- zero of #WorkBuffer2. #WorkBuffer2 will be completely filled with
- spectral data.
-
- 3.) LPP-Transposition in lppTransposer() is processed on 24 slots. During the
- transposition, the high band part of the spectral data is replicated
- based on the low band data.
-
- Envelope Adjustment is processed on the high band part of the spectral
- data only by calculateSbrEnvelope().
-
- 4.) The cplxSynthesisQmfFiltering() creates 64 time domain samples out
- of a slot of 64 complex spectral values at a time. The first 6 slots
- in #timeOut are filled from the results of spectral slots 0..5 in the
- #OverlapBuffer. The consecutive slots in timeOut are now filled with
- the results of spectral slots 6..17.
-
- 5.) The preprocessed slots 18..23 have to be stored in the
- #OverlapBuffer.
-
-*/
-
-void
-sbr_dec ( HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */
- INT_PCM *timeIn, /*!< pointer to input time signal */
- INT_PCM *timeOut, /*!< pointer to output time signal */
- HANDLE_SBR_DEC hSbrDecRight, /*!< handle to Decoder channel right */
- INT_PCM *timeOutRight, /*!< pointer to output time signal */
- const int strideIn, /*!< Time data traversal strideIn */
- const int strideOut, /*!< Time data traversal strideOut */
- HANDLE_SBR_HEADER_DATA hHeaderData,/*!< Static control data */
- HANDLE_SBR_FRAME_DATA hFrameData, /*!< Control data of current frame */
- HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData, /*!< Some control data of last frame */
- const int applyProcessing, /*!< Flag for SBR operation */
- HANDLE_PS_DEC h_ps_d,
- const UINT flags
- )
-{
- int i, slot, reserve;
- int saveLbScale;
- int ov_len;
- int lastSlotOffs;
- FIXP_DBL maxVal;
-
- /* 1+1/3 frames of spectral data: */
- FIXP_DBL **QmfBufferReal = hSbrDec->QmfBufferReal;
- FIXP_DBL **QmfBufferImag = hSbrDec->QmfBufferImag;
-
- /* Number of QMF timeslots in the overlap buffer: */
- ov_len = hSbrDec->LppTrans.pSettings->overlap;
-
- /* Number of QMF slots per frame */
- int noCols = hHeaderData->numberTimeSlots * hHeaderData->timeStep;
-
- /* assign qmf time slots */
- if ( ((flags & SBRDEC_LOW_POWER ) ? 1 : 0) != ((hSbrDec->SynthesisQMF.flags & QMF_FLAG_LP) ? 1 : 0) ) {
- assignTimeSlots( hSbrDec, hHeaderData->numberTimeSlots * hHeaderData->timeStep, flags & SBRDEC_LOW_POWER);
- }
-
- if (flags & SBRDEC_ELD_GRID) {
- /* Choose the right low delay filter bank */
- changeQmfType( hSbrDec, (flags & SBRDEC_LD_MPS_QMF) ? 1 : 0 );
- }
-
- /*
- low band codec signal subband filtering
- */
-
- {
- C_AALLOC_SCRATCH_START(qmfTemp, FIXP_DBL, 2*(64));
-
- qmfAnalysisFiltering( &hSbrDec->AnalysiscQMF,
- QmfBufferReal + ov_len,
- QmfBufferImag + ov_len,
- &hSbrDec->sbrScaleFactor,
- timeIn,
- strideIn,
- qmfTemp
- );
-
- C_AALLOC_SCRATCH_END(qmfTemp, FIXP_DBL, 2*(64));
- }
-
- /*
- Clear upper half of spectrum
- */
- {
- int nAnalysisBands = hHeaderData->numberOfAnalysisBands;
-
- if (! (flags & SBRDEC_LOW_POWER)) {
- for (slot = ov_len; slot < noCols+ov_len; slot++) {
- FDKmemclear(&QmfBufferReal[slot][nAnalysisBands],((64)-nAnalysisBands)*sizeof(FIXP_DBL));
- FDKmemclear(&QmfBufferImag[slot][nAnalysisBands],((64)-nAnalysisBands)*sizeof(FIXP_DBL));
- }
- } else
- for (slot = ov_len; slot < noCols+ov_len; slot++) {
- FDKmemclear(&QmfBufferReal[slot][nAnalysisBands],((64)-nAnalysisBands)*sizeof(FIXP_DBL));
- }
- }
-
-
-
- /*
- Shift spectral data left to gain accuracy in transposer and adjustor
- */
- maxVal = maxSubbandSample( QmfBufferReal,
- (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag,
- 0,
- hSbrDec->AnalysiscQMF.lsb,
- ov_len,
- noCols+ov_len );
-
- reserve = fixMax(0,CntLeadingZeros(maxVal)-1) ;
- reserve = fixMin(reserve,DFRACT_BITS-1-hSbrDec->sbrScaleFactor.lb_scale);
-
- /* If all data is zero, lb_scale could become too large */
- rescaleSubbandSamples( QmfBufferReal,
- (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag,
- 0,
- hSbrDec->AnalysiscQMF.lsb,
- ov_len,
- noCols+ov_len,
- reserve);
-
- hSbrDec->sbrScaleFactor.lb_scale += reserve;
-
- /*
- save low band scale, wavecoding or parametric stereo may modify it
- */
- saveLbScale = hSbrDec->sbrScaleFactor.lb_scale;
-
-
- if (applyProcessing)
- {
- UCHAR * borders = hFrameData->frameInfo.borders;
- lastSlotOffs = borders[hFrameData->frameInfo.nEnvelopes] - hHeaderData->numberTimeSlots;
-
- FIXP_DBL degreeAlias[(64)];
-
- /* The transposer will override most values in degreeAlias[].
- The array needs to be cleared at least from lowSubband to highSubband before. */
- if (flags & SBRDEC_LOW_POWER)
- FDKmemclear(&degreeAlias[hHeaderData->freqBandData.lowSubband], (hHeaderData->freqBandData.highSubband-hHeaderData->freqBandData.lowSubband)*sizeof(FIXP_DBL));
-
- /*
- Inverse filtering of lowband and transposition into the SBR-frequency range
- */
-
- lppTransposer ( &hSbrDec->LppTrans,
- &hSbrDec->sbrScaleFactor,
- QmfBufferReal,
- degreeAlias, // only used if useLP = 1
- QmfBufferImag,
- flags & SBRDEC_LOW_POWER,
- hHeaderData->timeStep,
- borders[0],
- lastSlotOffs,
- hHeaderData->freqBandData.nInvfBands,
- hFrameData->sbr_invf_mode,
- hPrevFrameData->sbr_invf_mode );
-
-
-
-
-
- /*
- Adjust envelope of current frame.
- */
-
- calculateSbrEnvelope (&hSbrDec->sbrScaleFactor,
- &hSbrDec->SbrCalculateEnvelope,
- hHeaderData,
- hFrameData,
- QmfBufferReal,
- QmfBufferImag,
- flags & SBRDEC_LOW_POWER,
-
- degreeAlias,
- flags,
- (hHeaderData->frameErrorFlag || hPrevFrameData->frameErrorFlag));
-
-
- /*
- Update hPrevFrameData (to be used in the next frame)
- */
- for (i=0; i<hHeaderData->freqBandData.nInvfBands; i++) {
- hPrevFrameData->sbr_invf_mode[i] = hFrameData->sbr_invf_mode[i];
- }
- hPrevFrameData->coupling = hFrameData->coupling;
- hPrevFrameData->stopPos = borders[hFrameData->frameInfo.nEnvelopes];
- hPrevFrameData->ampRes = hFrameData->ampResolutionCurrentFrame;
- }
- else {
- /* Reset hb_scale if no highband is present, because hb_scale is considered in the QMF-synthesis */
- hSbrDec->sbrScaleFactor.hb_scale = saveLbScale;
- }
-
-
- for (i=0; i<LPC_ORDER; i++){
- /*
- Store the unmodified qmf Slots values (required for LPC filtering)
- */
- if (! (flags & SBRDEC_LOW_POWER)) {
- FDKmemcpy(hSbrDec->LppTrans.lpcFilterStatesReal[i], QmfBufferReal[noCols-LPC_ORDER+i], hSbrDec->AnalysiscQMF.lsb*sizeof(FIXP_DBL));
- FDKmemcpy(hSbrDec->LppTrans.lpcFilterStatesImag[i], QmfBufferImag[noCols-LPC_ORDER+i], hSbrDec->AnalysiscQMF.lsb*sizeof(FIXP_DBL));
- } else
- FDKmemcpy(hSbrDec->LppTrans.lpcFilterStatesReal[i], QmfBufferReal[noCols-LPC_ORDER+i], hSbrDec->AnalysiscQMF.lsb*sizeof(FIXP_DBL));
- }
-
- /*
- Synthesis subband filtering.
- */
-
- if ( ! (flags & SBRDEC_PS_DECODED) ) {
-
- {
- int outScalefactor = 0;
-
- if (h_ps_d != NULL) {
- h_ps_d->procFrameBased = 1; /* we here do frame based processing */
- }
-
-
- sbrDecoder_drcApply(&hSbrDec->sbrDrcChannel,
- QmfBufferReal,
- (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag,
- hSbrDec->SynthesisQMF.no_col,
- &outScalefactor
- );
-
-
-
- qmfChangeOutScalefactor(&hSbrDec->SynthesisQMF, outScalefactor );
-
- {
- C_AALLOC_SCRATCH_START(qmfTemp, FIXP_DBL, 2*(64));
-
- qmfSynthesisFiltering( &hSbrDec->SynthesisQMF,
- QmfBufferReal,
- (flags & SBRDEC_LOW_POWER) ? NULL : QmfBufferImag,
- &hSbrDec->sbrScaleFactor,
- hSbrDec->LppTrans.pSettings->overlap,
- timeOut,
- strideOut,
- qmfTemp);
-
- C_AALLOC_SCRATCH_END(qmfTemp, FIXP_DBL, 2*(64));
- }
-
- }
-
- } else { /* (flags & SBRDEC_PS_DECODED) */
- INT i, sdiff, outScalefactor, scaleFactorLowBand, scaleFactorHighBand;
- SCHAR scaleFactorLowBand_ov, scaleFactorLowBand_no_ov;
-
- HANDLE_QMF_FILTER_BANK synQmf = &hSbrDec->SynthesisQMF;
- HANDLE_QMF_FILTER_BANK synQmfRight = &hSbrDecRight->SynthesisQMF;
-
- /* adapt scaling */
- sdiff = hSbrDec->sbrScaleFactor.lb_scale - reserve; /* Scaling difference */
- scaleFactorHighBand = sdiff - hSbrDec->sbrScaleFactor.hb_scale; /* Scale of current high band */
- scaleFactorLowBand_ov = sdiff - hSbrDec->sbrScaleFactor.ov_lb_scale; /* Scale of low band overlapping QMF data */
- scaleFactorLowBand_no_ov = sdiff - hSbrDec->sbrScaleFactor.lb_scale; /* Scale of low band current QMF data */
- outScalefactor = 0; /* Initial output scale */
-
- if (h_ps_d->procFrameBased == 1) /* If we have switched from frame to slot based processing copy filter states */
- { /* procFrameBased will be unset later */
- /* copy filter states from left to right */
- FDKmemcpy(synQmfRight->FilterStates, synQmf->FilterStates, ((640)-(64))*sizeof(FIXP_QSS));
- }
-
- /* scale ALL qmf vales ( real and imag ) of mono / left channel to the
- same scale factor ( ov_lb_sf, lb_sf and hq_sf ) */
- scalFilterBankValues( h_ps_d, /* parametric stereo decoder handle */
- QmfBufferReal, /* qmf filterbank values */
- QmfBufferImag, /* qmf filterbank values */
- synQmf->lsb, /* sbr start subband */
- hSbrDec->sbrScaleFactor.ov_lb_scale,
- hSbrDec->sbrScaleFactor.lb_scale,
- &scaleFactorLowBand_ov, /* adapt scaling values */
- &scaleFactorLowBand_no_ov, /* adapt scaling values */
- hSbrDec->sbrScaleFactor.hb_scale, /* current frame ( highband ) */
- &scaleFactorHighBand,
- synQmf->no_col);
-
- /* use the same synthese qmf values for left and right channel */
- synQmfRight->no_col = synQmf->no_col;
- synQmfRight->lsb = synQmf->lsb;
- synQmfRight->usb = synQmf->usb;
-
- int env=0;
-
- outScalefactor += (SCAL_HEADROOM+1); /* psDiffScale! */
-
- {
- C_AALLOC_SCRATCH_START(pWorkBuffer, FIXP_DBL, 2*(64));
-
- int maxShift = 0;
-
- if (hSbrDec->sbrDrcChannel.enable != 0) {
- if (hSbrDec->sbrDrcChannel.prevFact_exp > maxShift) {
- maxShift = hSbrDec->sbrDrcChannel.prevFact_exp;
- }
- if (hSbrDec->sbrDrcChannel.currFact_exp > maxShift) {
- maxShift = hSbrDec->sbrDrcChannel.currFact_exp;
- }
- if (hSbrDec->sbrDrcChannel.nextFact_exp > maxShift) {
- maxShift = hSbrDec->sbrDrcChannel.nextFact_exp;
- }
- }
-
- /* copy DRC data to right channel (with PS both channels use the same DRC gains) */
- FDKmemcpy(&hSbrDecRight->sbrDrcChannel, &hSbrDec->sbrDrcChannel, sizeof(SBRDEC_DRC_CHANNEL));
-
- for (i = 0; i < synQmf->no_col; i++) { /* ----- no_col loop ----- */
-
- INT outScalefactorR, outScalefactorL;
- outScalefactorR = outScalefactorL = outScalefactor;
-
- /* qmf timeslot of right channel */
- FIXP_DBL* rQmfReal = pWorkBuffer;
- FIXP_DBL* rQmfImag = pWorkBuffer + 64;
-
-
- {
- if ( i == h_ps_d->bsData[h_ps_d->processSlot].mpeg.aEnvStartStop[env] ) {
- initSlotBasedRotation( h_ps_d, env, hHeaderData->freqBandData.highSubband );
- env++;
- }
-
- ApplyPsSlot( h_ps_d, /* parametric stereo decoder handle */
- (QmfBufferReal + i), /* one timeslot of left/mono channel */
- (QmfBufferImag + i), /* one timeslot of left/mono channel */
- rQmfReal, /* one timeslot or right channel */
- rQmfImag); /* one timeslot or right channel */
- }
-
-
- scaleFactorLowBand = (i<(6)) ? scaleFactorLowBand_ov : scaleFactorLowBand_no_ov;
-
-
- sbrDecoder_drcApplySlot ( /* right channel */
- &hSbrDecRight->sbrDrcChannel,
- rQmfReal,
- rQmfImag,
- i,
- synQmfRight->no_col,
- maxShift
- );
-
- outScalefactorR += maxShift;
-
- sbrDecoder_drcApplySlot ( /* left channel */
- &hSbrDec->sbrDrcChannel,
- *(QmfBufferReal + i),
- *(QmfBufferImag + i),
- i,
- synQmf->no_col,
- maxShift
- );
-
- outScalefactorL += maxShift;
-
-
- /* scale filter states for left and right channel */
- qmfChangeOutScalefactor( synQmf, outScalefactorL );
- qmfChangeOutScalefactor( synQmfRight, outScalefactorR );
-
- {
-
- qmfSynthesisFilteringSlot( synQmfRight,
- rQmfReal, /* QMF real buffer */
- rQmfImag, /* QMF imag buffer */
- scaleFactorLowBand,
- scaleFactorHighBand,
- timeOutRight+(i*synQmf->no_channels*strideOut),
- strideOut,
- pWorkBuffer);
-
- qmfSynthesisFilteringSlot( synQmf,
- *(QmfBufferReal + i), /* QMF real buffer */
- *(QmfBufferImag + i), /* QMF imag buffer */
- scaleFactorLowBand,
- scaleFactorHighBand,
- timeOut+(i*synQmf->no_channels*strideOut),
- strideOut,
- pWorkBuffer);
-
- }
- } /* no_col loop i */
-
- /* scale back (6) timeslots look ahead for hybrid filterbank to original value */
- rescalFilterBankValues( h_ps_d,
- QmfBufferReal,
- QmfBufferImag,
- synQmf->lsb,
- synQmf->no_col );
-
- C_AALLOC_SCRATCH_END(pWorkBuffer, FIXP_DBL, 2*(64));
- }
- }
-
- sbrDecoder_drcUpdateChannel( &hSbrDec->sbrDrcChannel );
-
-
- /*
- Update overlap buffer
- Even bands above usb are copied to avoid outdated spectral data in case
- the stop frequency raises.
- */
-
- if (hSbrDec->LppTrans.pSettings->overlap > 0)
- {
- if (! (flags & SBRDEC_LOW_POWER)) {
- for ( i=0; i<hSbrDec->LppTrans.pSettings->overlap; i++ ) {
- FDKmemcpy(QmfBufferReal[i], QmfBufferReal[i+noCols], (64)*sizeof(FIXP_DBL));
- FDKmemcpy(QmfBufferImag[i], QmfBufferImag[i+noCols], (64)*sizeof(FIXP_DBL));
- }
- } else
- for ( i=0; i<hSbrDec->LppTrans.pSettings->overlap; i++ ) {
- FDKmemcpy(QmfBufferReal[i], QmfBufferReal[i+noCols], (64)*sizeof(FIXP_DBL));
- }
- }
-
- hSbrDec->sbrScaleFactor.ov_lb_scale = saveLbScale;
-
- /* Save current frame status */
- hPrevFrameData->frameErrorFlag = hHeaderData->frameErrorFlag;
-
-} // sbr_dec()
-
-
-/*!
- \brief Creates sbr decoder structure
- \return errorCode, 0 if successful
-*/
-SBR_ERROR
-createSbrDec (SBR_CHANNEL * hSbrChannel,
- HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Static control data */
- TRANSPOSER_SETTINGS *pSettings,
- const int downsampleFac, /*!< Downsampling factor */
- const UINT qmfFlags, /*!< flags -> 1: HQ/LP selector, 2: CLDFB */
- const UINT flags,
- const int overlap,
- int chan) /*!< Channel for which to assign buffers etc. */
-
-{
- SBR_ERROR err = SBRDEC_OK;
- int timeSlots = hHeaderData->numberTimeSlots; /* Number of SBR slots per frame */
- int noCols = timeSlots * hHeaderData->timeStep; /* Number of QMF slots per frame */
- HANDLE_SBR_DEC hs = &(hSbrChannel->SbrDec);
-
- /* Initialize scale factors */
- hs->sbrScaleFactor.ov_lb_scale = 0;
- hs->sbrScaleFactor.ov_hb_scale = 0;
- hs->sbrScaleFactor.hb_scale = 0;
-
-
- /*
- create envelope calculator
- */
- err = createSbrEnvelopeCalc (&hs->SbrCalculateEnvelope,
- hHeaderData,
- chan,
- flags);
- if (err != SBRDEC_OK) {
- return err;
- }
-
- /*
- create QMF filter banks
- */
- {
- int qmfErr;
- /* Adapted QMF analysis post-twiddles for down-sampled HQ SBR */
- const UINT downSampledFlag = (downsampleFac==2) ? QMF_FLAG_DOWNSAMPLED : 0;
-
- qmfErr = qmfInitAnalysisFilterBank (
- &hs->AnalysiscQMF,
- hs->anaQmfStates,
- noCols,
- hHeaderData->freqBandData.lowSubband,
- hHeaderData->freqBandData.highSubband,
- hHeaderData->numberOfAnalysisBands,
- (qmfFlags & (~QMF_FLAG_KEEP_STATES)) | downSampledFlag
- );
- if (qmfErr != 0) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
- }
- if (hs->pSynQmfStates == NULL) {
- hs->pSynQmfStates = GetRam_sbr_QmfStatesSynthesis(chan);
- if (hs->pSynQmfStates == NULL)
- return SBRDEC_MEM_ALLOC_FAILED;
- }
-
- {
- int qmfErr;
-
- qmfErr = qmfInitSynthesisFilterBank (
- &hs->SynthesisQMF,
- hs->pSynQmfStates,
- noCols,
- hHeaderData->freqBandData.lowSubband,
- hHeaderData->freqBandData.highSubband,
- (64) / downsampleFac,
- qmfFlags & (~QMF_FLAG_KEEP_STATES)
- );
-
- if (qmfErr != 0) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
- }
- initSbrPrevFrameData (&hSbrChannel->prevFrameData, timeSlots);
-
- /*
- create transposer
- */
- err = createLppTransposer (&hs->LppTrans,
- pSettings,
- hHeaderData->freqBandData.lowSubband,
- hHeaderData->freqBandData.v_k_master,
- hHeaderData->freqBandData.numMaster,
- hs->SynthesisQMF.usb,
- timeSlots,
- hs->AnalysiscQMF.no_col,
- hHeaderData->freqBandData.freqBandTableNoise,
- hHeaderData->freqBandData.nNfb,
- hHeaderData->sbrProcSmplRate,
- chan,
- overlap );
- if (err != SBRDEC_OK) {
- return err;
- }
-
- /* The CLDFB does not have overlap */
- if ((qmfFlags & QMF_FLAG_CLDFB) == 0) {
- if (hs->pSbrOverlapBuffer == NULL) {
- hs->pSbrOverlapBuffer = GetRam_sbr_OverlapBuffer(chan);
- if (hs->pSbrOverlapBuffer == NULL) {
- return SBRDEC_MEM_ALLOC_FAILED;
- }
- } else {
- /* Clear overlap buffer */
- FDKmemclear( hs->pSbrOverlapBuffer,
- sizeof(FIXP_DBL) * 2 * (6) * (64)
- );
- }
- }
-
- /* assign qmf time slots */
- assignTimeSlots( &hSbrChannel->SbrDec, hHeaderData->numberTimeSlots * hHeaderData->timeStep, qmfFlags & QMF_FLAG_LP);
-
- return err;
-}
-
-/*!
- \brief Delete sbr decoder structure
- \return errorCode, 0 if successful
-*/
-int
-deleteSbrDec (SBR_CHANNEL * hSbrChannel)
-{
- HANDLE_SBR_DEC hs = &hSbrChannel->SbrDec;
-
- deleteSbrEnvelopeCalc (&hs->SbrCalculateEnvelope);
-
- /* delete QMF filter states */
- if (hs->pSynQmfStates != NULL) {
- FreeRam_sbr_QmfStatesSynthesis(&hs->pSynQmfStates);
- }
-
-
- if (hs->pSbrOverlapBuffer != NULL) {
- FreeRam_sbr_OverlapBuffer(&hs->pSbrOverlapBuffer);
- }
-
- return 0;
-}
-
-
-/*!
- \brief resets sbr decoder structure
- \return errorCode, 0 if successful
-*/
-SBR_ERROR
-resetSbrDec (HANDLE_SBR_DEC hSbrDec,
- HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData,
- const int useLP,
- const int downsampleFac
- )
-{
- SBR_ERROR sbrError = SBRDEC_OK;
-
- int old_lsb = hSbrDec->SynthesisQMF.lsb;
- int new_lsb = hHeaderData->freqBandData.lowSubband;
- int l, startBand, stopBand, startSlot, size;
-
- int source_scale, target_scale, delta_scale, target_lsb, target_usb, reserve;
- FIXP_DBL maxVal;
-
- /* overlapBuffer point to first (6) slots */
- FIXP_DBL **OverlapBufferReal = hSbrDec->QmfBufferReal;
- FIXP_DBL **OverlapBufferImag = hSbrDec->QmfBufferImag;
-
- /* assign qmf time slots */
- assignTimeSlots( hSbrDec, hHeaderData->numberTimeSlots * hHeaderData->timeStep, useLP);
-
-
-
- resetSbrEnvelopeCalc (&hSbrDec->SbrCalculateEnvelope);
-
- hSbrDec->SynthesisQMF.lsb = hHeaderData->freqBandData.lowSubband;
- hSbrDec->SynthesisQMF.usb = fixMin((INT)hSbrDec->SynthesisQMF.no_channels, (INT)hHeaderData->freqBandData.highSubband);
-
- hSbrDec->AnalysiscQMF.lsb = hSbrDec->SynthesisQMF.lsb;
- hSbrDec->AnalysiscQMF.usb = hSbrDec->SynthesisQMF.usb;
-
-
- /*
- The following initialization of spectral data in the overlap buffer
- is required for dynamic x-over or a change of the start-freq for 2 reasons:
-
- 1. If the lowband gets _wider_, unadjusted data would remain
-
- 2. If the lowband becomes _smaller_, the highest bands of the old lowband
- must be cleared because the whitening would be affected
- */
- startBand = old_lsb;
- stopBand = new_lsb;
- startSlot = hHeaderData->timeStep * (hPrevFrameData->stopPos - hHeaderData->numberTimeSlots);
- size = fixMax(0,stopBand-startBand);
-
- /* keep already adjusted data in the x-over-area */
- if (!useLP) {
- for (l=startSlot; l<hSbrDec->LppTrans.pSettings->overlap; l++) {
- FDKmemclear(&OverlapBufferReal[l][startBand], size*sizeof(FIXP_DBL));
- FDKmemclear(&OverlapBufferImag[l][startBand], size*sizeof(FIXP_DBL));
- }
- } else
- for (l=startSlot; l<hSbrDec->LppTrans.pSettings->overlap ; l++) {
- FDKmemclear(&OverlapBufferReal[l][startBand], size*sizeof(FIXP_DBL));
- }
-
-
- /*
- reset LPC filter states
- */
- startBand = fixMin(old_lsb,new_lsb);
- stopBand = fixMax(old_lsb,new_lsb);
- size = fixMax(0,stopBand-startBand);
-
- FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesReal[0][startBand], size*sizeof(FIXP_DBL));
- FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesReal[1][startBand], size*sizeof(FIXP_DBL));
- if (!useLP) {
- FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesImag[0][startBand], size*sizeof(FIXP_DBL));
- FDKmemclear(&hSbrDec->LppTrans.lpcFilterStatesImag[1][startBand], size*sizeof(FIXP_DBL));
- }
-
-
- /*
- Rescale already processed spectral data between old and new x-over frequency.
- This must be done because of the separate scalefactors for lowband and highband.
- */
- startBand = fixMin(old_lsb,new_lsb);
- stopBand = fixMax(old_lsb,new_lsb);
-
- if (new_lsb > old_lsb) {
- /* The x-over-area was part of the highband before and will now belong to the lowband */
- source_scale = hSbrDec->sbrScaleFactor.ov_hb_scale;
- target_scale = hSbrDec->sbrScaleFactor.ov_lb_scale;
- target_lsb = 0;
- target_usb = old_lsb;
- }
- else {
- /* The x-over-area was part of the lowband before and will now belong to the highband */
- source_scale = hSbrDec->sbrScaleFactor.ov_lb_scale;
- target_scale = hSbrDec->sbrScaleFactor.ov_hb_scale;
- /* jdr: The values old_lsb and old_usb might be wrong because the previous frame might have been "upsamling". */
- target_lsb = hSbrDec->SynthesisQMF.lsb;
- target_usb = hSbrDec->SynthesisQMF.usb;
- }
-
- /* Shift left all samples of the x-over-area as much as possible
- An unnecessary coarse scale could cause ov_lb_scale or ov_hb_scale to be
- adapted and the accuracy in the next frame would seriously suffer! */
-
- maxVal = maxSubbandSample( OverlapBufferReal,
- (useLP) ? NULL : OverlapBufferImag,
- startBand,
- stopBand,
- 0,
- startSlot);
-
- reserve = CntLeadingZeros(maxVal)-1;
- reserve = fixMin(reserve,DFRACT_BITS-1-source_scale);
-
- rescaleSubbandSamples( OverlapBufferReal,
- (useLP) ? NULL : OverlapBufferImag,
- startBand,
- stopBand,
- 0,
- startSlot,
- reserve);
- source_scale += reserve;
-
- delta_scale = target_scale - source_scale;
-
- if (delta_scale > 0) { /* x-over-area is dominant */
- delta_scale = -delta_scale;
- startBand = target_lsb;
- stopBand = target_usb;
-
- if (new_lsb > old_lsb) {
- /* The lowband has to be rescaled */
- hSbrDec->sbrScaleFactor.ov_lb_scale = source_scale;
- }
- else {
- /* The highband has be be rescaled */
- hSbrDec->sbrScaleFactor.ov_hb_scale = source_scale;
- }
- }
-
- FDK_ASSERT(startBand <= stopBand);
-
- if (!useLP) {
- for (l=0; l<startSlot; l++) {
- scaleValues( OverlapBufferReal[l] + startBand, stopBand-startBand, delta_scale );
- scaleValues( OverlapBufferImag[l] + startBand, stopBand-startBand, delta_scale );
- }
- } else
- for (l=0; l<startSlot; l++) {
- scaleValues( OverlapBufferReal[l] + startBand, stopBand-startBand, delta_scale );
- }
-
-
- /*
- Initialize transposer and limiter
- */
- sbrError = resetLppTransposer (&hSbrDec->LppTrans,
- hHeaderData->freqBandData.lowSubband,
- hHeaderData->freqBandData.v_k_master,
- hHeaderData->freqBandData.numMaster,
- hHeaderData->freqBandData.freqBandTableNoise,
- hHeaderData->freqBandData.nNfb,
- hHeaderData->freqBandData.highSubband,
- hHeaderData->sbrProcSmplRate);
- if (sbrError != SBRDEC_OK)
- return sbrError;
-
- sbrError = ResetLimiterBands ( hHeaderData->freqBandData.limiterBandTable,
- &hHeaderData->freqBandData.noLimiterBands,
- hHeaderData->freqBandData.freqBandTable[0],
- hHeaderData->freqBandData.nSfb[0],
- hSbrDec->LppTrans.pSettings->patchParam,
- hSbrDec->LppTrans.pSettings->noOfPatches,
- hHeaderData->bs_data.limiterBands);
-
-
- return sbrError;
-}
diff --git a/libSBRdec/src/sbr_dec.h b/libSBRdec/src/sbr_dec.h
deleted file mode 100644
index 175e7b2..0000000
--- a/libSBRdec/src/sbr_dec.h
+++ /dev/null
@@ -1,210 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Sbr decoder
-*/
-#ifndef __SBR_DEC_H
-#define __SBR_DEC_H
-
-#include "sbrdecoder.h"
-
-#include "lpp_tran.h"
-#include "qmf.h"
-#include "env_calc.h"
-#include "FDK_audio.h"
-
-
-#include "sbrdec_drc.h"
-
-#define SACDEC_ALIGNMENT_FIX
-
-typedef struct
-{
- QMF_FILTER_BANK AnalysiscQMF;
- QMF_FILTER_BANK SynthesisQMF;
-
- SBR_CALCULATE_ENVELOPE SbrCalculateEnvelope;
- SBR_LPP_TRANS LppTrans;
-
- QMF_SCALE_FACTOR sbrScaleFactor;
- QMF_SCALE_FACTOR sbrScaleFactorRight;
-
- /*! Delayed spectral data needed for the dynamic framing of SBR. Not required in case of CLDFB */
- FIXP_DBL * pSbrOverlapBuffer;
-
- /* References to workbuffers */
- FIXP_DBL * WorkBuffer1;
- FIXP_DBL * WorkBuffer2;
-
- /* QMF filter states */
- FIXP_QAS anaQmfStates[(320)];
- FIXP_QSS * pSynQmfStates;
-
- /* Reference pointer arrays for QMF time slots,
- mixed among overlap and current slots. */
- FIXP_DBL * QmfBufferReal[(((1024)/(32))+(6))];
- FIXP_DBL * QmfBufferImag[(((1024)/(32))+(6))];
- int useLP;
-
- /* QMF domain extension time slot reference pointer array */
-
- SBRDEC_DRC_CHANNEL sbrDrcChannel;
-
-} SBR_DEC;
-
-typedef SBR_DEC *HANDLE_SBR_DEC;
-
-
-typedef struct
-{
- SBR_FRAME_DATA frameData[(1)+1];
- SBR_PREV_FRAME_DATA prevFrameData;
- SBR_DEC SbrDec;
-}
-SBR_CHANNEL;
-
-typedef SBR_CHANNEL *HANDLE_SBR_CHANNEL;
-
-void
-SbrDecodeAndProcess (HANDLE_SBR_DEC hSbrDec,
- INT_PCM *timeIn,
- HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_FRAME_DATA hFrameData,
- HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData,
- int applyProcessing,
- int channelNr
- , UCHAR useLP
- );
-
-
-void
-SbrConstructTimeOutput (HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */
- INT_PCM *timeOut, /*!< pointer to output time signal */
- HANDLE_SBR_HEADER_DATA hHeaderData,/*!< Static control data */
- HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData, /*!< Some control data of last frame */
- int channelNr
- ,UCHAR useLP
- );
-
-
-void
-sbr_dec (HANDLE_SBR_DEC hSbrDec, /*!< handle to Decoder channel */
- INT_PCM *timeIn, /*!< pointer to input time signal */
- INT_PCM *timeOut, /*!< pointer to output time signal */
- HANDLE_SBR_DEC hSbrDecRight, /*!< handle to Decoder channel right */
- INT_PCM *timeOutRight, /*!< pointer to output time signal */
- const int strideIn, /*!< Time data traversal strideIn */
- const int strideOut, /*!< Time data traversal strideOut */
- HANDLE_SBR_HEADER_DATA hHeaderData,/*!< Static control data */
- HANDLE_SBR_FRAME_DATA hFrameData, /*!< Control data of current frame */
- HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData, /*!< Some control data of last frame */
- const int applyProcessing, /*!< Flag for SBR operation */
- HANDLE_PS_DEC h_ps_d,
- const UINT flags
- );
-
-
-
-SBR_ERROR
-createSbrDec (SBR_CHANNEL * hSbrChannel,
- HANDLE_SBR_HEADER_DATA hHeaderData,
- TRANSPOSER_SETTINGS *pSettings,
- const int downsampleFac,
- const UINT qmfFlags,
- const UINT flags,
- const int overlap,
- int chan);
-
-int
-deleteSbrDec (SBR_CHANNEL * hSbrChannel);
-
-SBR_ERROR
-resetSbrDec (HANDLE_SBR_DEC hSbrDec,
- HANDLE_SBR_HEADER_DATA hHeaderData,
- HANDLE_SBR_PREV_FRAME_DATA hPrevFrameData,
- const int useLP,
- const int downsampleFac);
-
-#endif
diff --git a/libSBRdec/src/sbr_ram.cpp b/libSBRdec/src/sbr_ram.cpp
deleted file mode 100644
index 6ae941f..0000000
--- a/libSBRdec/src/sbr_ram.cpp
+++ /dev/null
@@ -1,194 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Memory layout
-
-
- This module declares all static and dynamic memory spaces
-*/
-
-#include "sbr_ram.h"
-
-
-
-
-#define WORKBUFFER1_TAG 0
-#define WORKBUFFER2_TAG 1
-
-/*!
- \name StaticSbrData
-
- Static memory areas, must not be overwritten in other sections of the decoder
-*/
-/* @{ */
-
-/*! SBR Decoder main structure */
-C_ALLOC_MEM(Ram_SbrDecoder, struct SBR_DECODER_INSTANCE, 1)
-/*! SBR Decoder element data <br>
- Dimension: (4) */
-C_ALLOC_MEM2(Ram_SbrDecElement, SBR_DECODER_ELEMENT, 1, (4))
-/*! SBR Decoder individual channel data <br>
- Dimension: (6) */
-C_ALLOC_MEM2(Ram_SbrDecChannel, SBR_CHANNEL, 1, (6)+1)
-
-/*! Filter states for QMF-synthesis. <br>
- Dimension: #(6) * (#QMF_FILTER_STATE_SYN_SIZE-#(64)) */
-C_AALLOC_MEM2_L(Ram_sbr_QmfStatesSynthesis, FIXP_QSS, (640)-(64), (6)+1, SECT_DATA_L1)
-
-/*! Delayed spectral data needed for the dynamic framing of SBR.
- For mp3PRO, 1/3 of a frame is buffered (#(6) 6) */
-C_AALLOC_MEM2(Ram_sbr_OverlapBuffer, FIXP_DBL, 2 * (6) * (64), (6)+1)
-
-/*! Static Data of PS */
-
-C_ALLOC_MEM(Ram_ps_dec, PS_DEC, 1)
-
-
-/* @} */
-
-
-/*!
- \name DynamicSbrData
-
- Dynamic memory areas, might be reused in other algorithm sections,
- e.g. the core decoder
- <br>
- Depending on the mode set by DONT_USE_CORE_WORKBUFFER, workbuffers are
- defined additionally to the CoreWorkbuffer.
- <br>
- The size of WorkBuffers is ((1024)/(32))*(64) = 2048.
- <br>
- WorkBuffer2 is a pointer to the CoreWorkBuffer wich is reused here in the SBR part. In case of
- DONT_USE_CORE_WORKBUFFER, the CoreWorkbuffer is not used and the according
- Workbuffer2 is defined locally in this file.
- <br>
- WorkBuffer1 is reused in the AAC core (-> aacdecoder.cpp, aac_ram.cpp)
- <br>
-
- Use of WorkBuffers:
- <pre>
-
- -------------------------------------------------------------
- AAC core:
-
- CoreWorkbuffer: spectral coefficients
- WorkBuffer1: CAacDecoderChannelInfo, CAacDecoderDynamicData
-
- -------------------------------------------------------------
- SBR part:
- ----------------------------------------------
- Low Power Mode (useLP=1 or LOW_POWER_SBR_ONLY), see assignLcTimeSlots()
-
- SLOT_BASED_PROTOTYPE_SYN_FILTER
-
- WorkBuffer1 WorkBuffer2(=CoreWorkbuffer)
- ________________ ________________
- | RealLeft | | RealRight |
- |________________| |________________|
-
- ----------------------------------------------
- High Quality Mode (!LOW_POWER_SBR_ONLY and useLP=0), see assignHqTimeSlots()
-
- SLOTBASED_PS
-
- WorkBuffer1 WorkBuffer2(=CoreWorkbuffer)
- ________________ ________________
- | Real/Imag | interleaved | Real/Imag | interleaved
- |________________| first half actual ch |________________| second half actual ch
-
- -------------------------------------------------------------
-
- </pre>
-
-*/
-/* @{ */
-C_ALLOC_MEM_OVERLAY(Ram_SbrDecWorkBuffer1, FIXP_DBL, ((1024)/(32))*(64), SECT_DATA_L1, WORKBUFFER1_TAG)
-C_ALLOC_MEM_OVERLAY(Ram_SbrDecWorkBuffer2, FIXP_DBL, ((1024)/(32))*(64), SECT_DATA_L2, WORKBUFFER2_TAG)
-
-/* @} */
-
-
-
-
diff --git a/libSBRdec/src/sbr_ram.h b/libSBRdec/src/sbr_ram.h
deleted file mode 100644
index 8fc2dae..0000000
--- a/libSBRdec/src/sbr_ram.h
+++ /dev/null
@@ -1,158 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
-\file
-\brief Memory layout
-
-*/
-#ifndef _SBR_RAM_H_
-#define _SBR_RAM_H_
-
-#include "sbrdecoder.h"
-
-#include "env_extr.h"
-#include "sbr_dec.h"
-
-
-
-#define SBRDEC_MAX_CH_PER_ELEMENT (2)
-
-typedef struct
-{
- SBR_CHANNEL *pSbrChannel[SBRDEC_MAX_CH_PER_ELEMENT];
- TRANSPOSER_SETTINGS transposerSettings; /* Common transport settings for each individual channel of an element */
- HANDLE_FDK_BITSTREAM hBs;
-
- MP4_ELEMENT_ID elementID; /* Element ID set during initialization. Can be used for concealment */
- int nChannels; /* Number of elements output channels (=2 in case of PS) */
-
- UCHAR frameErrorFlag[(1)+1]; /* Frame error status (for every slot in the delay line).
- Will be copied into header at the very beginning of decodeElement() routine. */
-
- UCHAR useFrameSlot; /* Index which defines which slot will be decoded/filled next (used with additional delay) */
- UCHAR useHeaderSlot[(1)+1]; /* Index array that provides the link between header and frame data
- (important when processing with additional delay). */
-} SBR_DECODER_ELEMENT;
-
-
-struct SBR_DECODER_INSTANCE
-{
- SBR_DECODER_ELEMENT *pSbrElement[(4)];
- SBR_HEADER_DATA sbrHeader[(4)][(1)+1]; /* Sbr header for each individual channel of an element */
-
- FIXP_DBL *workBuffer1;
- FIXP_DBL *workBuffer2;
-
- HANDLE_PS_DEC hParametricStereoDec;
-
- /* Global parameters */
- AUDIO_OBJECT_TYPE coreCodec; /* AOT of core codec */
- int numSbrElements;
- int numSbrChannels;
- INT sampleRateIn; /* SBR decoder input sampling rate; might be different than the transposer input sampling rate. */
- INT sampleRateOut; /* Sampling rate of the SBR decoder output audio samples. */
- USHORT codecFrameSize;
- UCHAR synDownsampleFac;
- UCHAR numDelayFrames; /* The current number of additional delay frames used for processing. */
-
- UINT flags;
-
-};
-
-H_ALLOC_MEM(Ram_SbrDecElement, SBR_DECODER_ELEMENT)
-H_ALLOC_MEM(Ram_SbrDecChannel, SBR_CHANNEL)
-H_ALLOC_MEM(Ram_SbrDecoder, struct SBR_DECODER_INSTANCE)
-
-H_ALLOC_MEM(Ram_sbr_QmfStatesSynthesis, FIXP_QSS)
-H_ALLOC_MEM(Ram_sbr_OverlapBuffer, FIXP_DBL)
-
-
-H_ALLOC_MEM(Ram_ps_dec, PS_DEC)
-
-
-H_ALLOC_MEM_OVERLAY(Ram_SbrDecWorkBuffer1, FIXP_DBL)
-H_ALLOC_MEM_OVERLAY(Ram_SbrDecWorkBuffer2, FIXP_DBL)
-
-
-#endif /* _SBR_RAM_H_ */
diff --git a/libSBRdec/src/sbr_rom.cpp b/libSBRdec/src/sbr_rom.cpp
deleted file mode 100644
index e84c3cd..0000000
--- a/libSBRdec/src/sbr_rom.cpp
+++ /dev/null
@@ -1,1414 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Definition of constant tables
-
-
- This module contains most of the constant data that can be stored in ROM.
-*/
-
-#include "sbr_rom.h"
-
-
-
-
-/*!
- \name StartStopBands
- \brief Start and stop subbands of the highband.
-
- k_o = startMin + offset[bs_start_freq];
- startMin = {3000,4000,5000} * (128/FS_sbr) / FS_sbr < 32Khz, 32Khz <= FS_sbr < 64KHz, 64KHz <= FS_sbr
- The stop subband can also be calculated to save memory by defining #CALC_STOP_BAND.
-*/
-//@{
-const UCHAR FDK_sbrDecoder_sbr_start_freq_16[16] = {16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_22[16] = {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 26, 28, 30};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_24[16] = {11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 27, 29, 32};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_32[16] = {10, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 27, 29, 32};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_40[16] = {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 26, 28, 30, 32};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_44[16] = { 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 23, 25, 28, 32};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_48[16] = { 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 22, 24, 27, 31};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_64[16] = { 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 23, 26, 30};
-const UCHAR FDK_sbrDecoder_sbr_start_freq_88[16] = { 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 20, 23, 27, 31};
-//@}
-
-
-/*!
- \name Whitening
- \brief Coefficients for spectral whitening in the transposer
-*/
-//@{
-/*! Assignment of whitening tuning depending on the crossover frequency */
-const USHORT FDK_sbrDecoder_sbr_whFactorsIndex[NUM_WHFACTOR_TABLE_ENTRIES] = {
- 0,
- 5000,
- 6000,
- 6500,
- 7000,
- 7500,
- 8000,
- 9000,
- 10000
-};
-
-/*!
- \brief Whithening levels tuning table
-
- With the current tuning, there are some redundant entries:
-
- \li NUM_WHFACTOR_TABLE_ENTRIES can be reduced by 3,
- \li the first coloumn can be eliminated.
-
-*/
-const FIXP_DBL FDK_sbrDecoder_sbr_whFactorsTable[NUM_WHFACTOR_TABLE_ENTRIES][6] = {
- /* OFF_LEVEL, TRANSITION_LEVEL, LOW_LEVEL, MID_LEVEL, HIGH_LEVEL */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* < 5000 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* 5000 < 6000 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* 6000 < 6500 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* 6500 < 7000 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* 7000 < 7500 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* 7500 < 8000 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* 8000 < 9000 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* 9000 < 10000 */
- { FL2FXCONST_DBL(0.00f), FL2FXCONST_DBL(0.6f), FL2FXCONST_DBL(0.75f), FL2FXCONST_DBL(0.90f), FL2FXCONST_DBL(0.98f)}, /* > 10000 */
-};
-
-
-//@}
-
-
-/*!
- \name EnvAdj
- \brief Constants and tables used for envelope adjustment
-*/
-//@{
-
-/*! Mantissas of gain limits */
-const FIXP_SGL FDK_sbrDecoder_sbr_limGains_m[4] =
-{
- FL2FXCONST_SGL(0.5011932025f), /*!< -3 dB. Gain limit when limiterGains in frameData is 0 */
- FL2FXCONST_SGL(0.5f), /*!< 0 dB. Gain limit when limiterGains in frameData is 1 */
- FL2FXCONST_SGL(0.9976346258f), /*!< +3 dB. Gain limit when limiterGains in frameData is 2 */
- FL2FXCONST_SGL(0.6776263578f) /*!< Inf. Gain limit when limiterGains in frameData is 3 */
-};
-
-/*! Exponents of gain limits */
-const UCHAR FDK_sbrDecoder_sbr_limGains_e[4] =
-{
- 0, 1, 1, 67
-};
-
-/*! Constants for calculating the number of limiter bands */
-const FIXP_SGL FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4[4] =
-{
- FL2FXCONST_SGL(1.0f / 4.0f),
- FL2FXCONST_SGL(1.2f / 4.0f),
- FL2FXCONST_SGL(2.0f / 4.0f),
- FL2FXCONST_SGL(3.0f / 4.0f)
-};
-
-/*! Ratio of old gains and noise levels for the first 4 timeslots of an envelope */
-const FIXP_SGL FDK_sbrDecoder_sbr_smoothFilter[4] = {
- FL2FXCONST_SGL(0.66666666666666f),
- FL2FXCONST_SGL(0.36516383427084f),
- FL2FXCONST_SGL(0.14699433520835f),
- FL2FXCONST_SGL(0.03183050093751f)
-};
-
-
-/*! Real and imaginary part of random noise which will be modulated
- to the desired level. An accuracy of 13 bits is sufficient for these
- random numbers.
-*/
-const FIXP_SGL FDK_sbrDecoder_sbr_randomPhase[SBR_NF_NO_RANDOM_VAL][2] = {
- { FL2FXCONST_SGL(-0.99948153278296f / 8.0), FL2FXCONST_SGL(-0.59483417516607f / 8.0) },
- { FL2FXCONST_SGL( 0.97113454393991f / 8.0), FL2FXCONST_SGL(-0.67528515225647f / 8.0) },
- { FL2FXCONST_SGL( 0.14130051758487f / 8.0), FL2FXCONST_SGL(-0.95090983575689f / 8.0) },
- { FL2FXCONST_SGL(-0.47005496701697f / 8.0), FL2FXCONST_SGL(-0.37340549728647f / 8.0) },
- { FL2FXCONST_SGL( 0.80705063769351f / 8.0), FL2FXCONST_SGL( 0.29653668284408f / 8.0) },
- { FL2FXCONST_SGL(-0.38981478896926f / 8.0), FL2FXCONST_SGL( 0.89572605717087f / 8.0) },
- { FL2FXCONST_SGL(-0.01053049862020f / 8.0), FL2FXCONST_SGL(-0.66959058036166f / 8.0) },
- { FL2FXCONST_SGL(-0.91266367957293f / 8.0), FL2FXCONST_SGL(-0.11522938140034f / 8.0) },
- { FL2FXCONST_SGL( 0.54840422910309f / 8.0), FL2FXCONST_SGL( 0.75221367176302f / 8.0) },
- { FL2FXCONST_SGL( 0.40009252867955f / 8.0), FL2FXCONST_SGL(-0.98929400334421f / 8.0) },
- { FL2FXCONST_SGL(-0.99867974711855f / 8.0), FL2FXCONST_SGL(-0.88147068645358f / 8.0) },
- { FL2FXCONST_SGL(-0.95531076805040f / 8.0), FL2FXCONST_SGL( 0.90908757154593f / 8.0) },
- { FL2FXCONST_SGL(-0.45725933317144f / 8.0), FL2FXCONST_SGL(-0.56716323646760f / 8.0) },
- { FL2FXCONST_SGL(-0.72929675029275f / 8.0), FL2FXCONST_SGL(-0.98008272727324f / 8.0) },
- { FL2FXCONST_SGL( 0.75622801399036f / 8.0), FL2FXCONST_SGL( 0.20950329995549f / 8.0) },
- { FL2FXCONST_SGL( 0.07069442601050f / 8.0), FL2FXCONST_SGL(-0.78247898470706f / 8.0) },
- { FL2FXCONST_SGL( 0.74496252926055f / 8.0), FL2FXCONST_SGL(-0.91169004445807f / 8.0) },
- { FL2FXCONST_SGL(-0.96440182703856f / 8.0), FL2FXCONST_SGL(-0.94739918296622f / 8.0) },
- { FL2FXCONST_SGL( 0.30424629369539f / 8.0), FL2FXCONST_SGL(-0.49438267012479f / 8.0) },
- { FL2FXCONST_SGL( 0.66565033746925f / 8.0), FL2FXCONST_SGL( 0.64652935542491f / 8.0) },
- { FL2FXCONST_SGL( 0.91697008020594f / 8.0), FL2FXCONST_SGL( 0.17514097332009f / 8.0) },
- { FL2FXCONST_SGL(-0.70774918760427f / 8.0), FL2FXCONST_SGL( 0.52548653416543f / 8.0) },
- { FL2FXCONST_SGL(-0.70051415345560f / 8.0), FL2FXCONST_SGL(-0.45340028808763f / 8.0) },
- { FL2FXCONST_SGL(-0.99496513054797f / 8.0), FL2FXCONST_SGL(-0.90071908066973f / 8.0) },
- { FL2FXCONST_SGL( 0.98164490790123f / 8.0), FL2FXCONST_SGL(-0.77463155528697f / 8.0) },
- { FL2FXCONST_SGL(-0.54671580548181f / 8.0), FL2FXCONST_SGL(-0.02570928536004f / 8.0) },
- { FL2FXCONST_SGL(-0.01689629065389f / 8.0), FL2FXCONST_SGL( 0.00287506445732f / 8.0) },
- { FL2FXCONST_SGL(-0.86110349531986f / 8.0), FL2FXCONST_SGL( 0.42548583726477f / 8.0) },
- { FL2FXCONST_SGL(-0.98892980586032f / 8.0), FL2FXCONST_SGL(-0.87881132267556f / 8.0) },
- { FL2FXCONST_SGL( 0.51756627678691f / 8.0), FL2FXCONST_SGL( 0.66926784710139f / 8.0) },
- { FL2FXCONST_SGL(-0.99635026409640f / 8.0), FL2FXCONST_SGL(-0.58107730574765f / 8.0) },
- { FL2FXCONST_SGL(-0.99969370862163f / 8.0), FL2FXCONST_SGL( 0.98369989360250f / 8.0) },
- { FL2FXCONST_SGL( 0.55266258627194f / 8.0), FL2FXCONST_SGL( 0.59449057465591f / 8.0) },
- { FL2FXCONST_SGL( 0.34581177741673f / 8.0), FL2FXCONST_SGL( 0.94879421061866f / 8.0) },
- { FL2FXCONST_SGL( 0.62664209577999f / 8.0), FL2FXCONST_SGL(-0.74402970906471f / 8.0) },
- { FL2FXCONST_SGL(-0.77149701404973f / 8.0), FL2FXCONST_SGL(-0.33883658042801f / 8.0) },
- { FL2FXCONST_SGL(-0.91592244254432f / 8.0), FL2FXCONST_SGL( 0.03687901376713f / 8.0) },
- { FL2FXCONST_SGL(-0.76285492357887f / 8.0), FL2FXCONST_SGL(-0.91371867919124f / 8.0) },
- { FL2FXCONST_SGL( 0.79788337195331f / 8.0), FL2FXCONST_SGL(-0.93180971199849f / 8.0) },
- { FL2FXCONST_SGL( 0.54473080610200f / 8.0), FL2FXCONST_SGL(-0.11919206037186f / 8.0) },
- { FL2FXCONST_SGL(-0.85639281671058f / 8.0), FL2FXCONST_SGL( 0.42429854760451f / 8.0) },
- { FL2FXCONST_SGL(-0.92882402971423f / 8.0), FL2FXCONST_SGL( 0.27871809078609f / 8.0) },
- { FL2FXCONST_SGL(-0.11708371046774f / 8.0), FL2FXCONST_SGL(-0.99800843444966f / 8.0) },
- { FL2FXCONST_SGL( 0.21356749817493f / 8.0), FL2FXCONST_SGL(-0.90716295627033f / 8.0) },
- { FL2FXCONST_SGL(-0.76191692573909f / 8.0), FL2FXCONST_SGL( 0.99768118356265f / 8.0) },
- { FL2FXCONST_SGL( 0.98111043100884f / 8.0), FL2FXCONST_SGL(-0.95854459734407f / 8.0) },
- { FL2FXCONST_SGL(-0.85913269895572f / 8.0), FL2FXCONST_SGL( 0.95766566168880f / 8.0) },
- { FL2FXCONST_SGL(-0.93307242253692f / 8.0), FL2FXCONST_SGL( 0.49431757696466f / 8.0) },
- { FL2FXCONST_SGL( 0.30485754879632f / 8.0), FL2FXCONST_SGL(-0.70540034357529f / 8.0) },
- { FL2FXCONST_SGL( 0.85289650925190f / 8.0), FL2FXCONST_SGL( 0.46766131791044f / 8.0) },
- { FL2FXCONST_SGL( 0.91328082618125f / 8.0), FL2FXCONST_SGL(-0.99839597361769f / 8.0) },
- { FL2FXCONST_SGL(-0.05890199924154f / 8.0), FL2FXCONST_SGL( 0.70741827819497f / 8.0) },
- { FL2FXCONST_SGL( 0.28398686150148f / 8.0), FL2FXCONST_SGL( 0.34633555702188f / 8.0) },
- { FL2FXCONST_SGL( 0.95258164539612f / 8.0), FL2FXCONST_SGL(-0.54893416026939f / 8.0) },
- { FL2FXCONST_SGL(-0.78566324168507f / 8.0), FL2FXCONST_SGL(-0.75568541079691f / 8.0) },
- { FL2FXCONST_SGL(-0.95789495447877f / 8.0), FL2FXCONST_SGL(-0.20423194696966f / 8.0) },
- { FL2FXCONST_SGL( 0.82411158711197f / 8.0), FL2FXCONST_SGL( 0.96654618432562f / 8.0) },
- { FL2FXCONST_SGL(-0.65185446735885f / 8.0), FL2FXCONST_SGL(-0.88734990773289f / 8.0) },
- { FL2FXCONST_SGL(-0.93643603134666f / 8.0), FL2FXCONST_SGL( 0.99870790442385f / 8.0) },
- { FL2FXCONST_SGL( 0.91427159529618f / 8.0), FL2FXCONST_SGL(-0.98290505544444f / 8.0) },
- { FL2FXCONST_SGL(-0.70395684036886f / 8.0), FL2FXCONST_SGL( 0.58796798221039f / 8.0) },
- { FL2FXCONST_SGL( 0.00563771969365f / 8.0), FL2FXCONST_SGL( 0.61768196727244f / 8.0) },
- { FL2FXCONST_SGL( 0.89065051931895f / 8.0), FL2FXCONST_SGL( 0.52783352697585f / 8.0) },
- { FL2FXCONST_SGL(-0.68683707712762f / 8.0), FL2FXCONST_SGL( 0.80806944710339f / 8.0) },
- { FL2FXCONST_SGL( 0.72165342518718f / 8.0), FL2FXCONST_SGL(-0.69259857349564f / 8.0) },
- { FL2FXCONST_SGL(-0.62928247730667f / 8.0), FL2FXCONST_SGL( 0.13627037407335f / 8.0) },
- { FL2FXCONST_SGL( 0.29938434065514f / 8.0), FL2FXCONST_SGL(-0.46051329682246f / 8.0) },
- { FL2FXCONST_SGL(-0.91781958879280f / 8.0), FL2FXCONST_SGL(-0.74012716684186f / 8.0) },
- { FL2FXCONST_SGL( 0.99298717043688f / 8.0), FL2FXCONST_SGL( 0.40816610075661f / 8.0) },
- { FL2FXCONST_SGL( 0.82368298622748f / 8.0), FL2FXCONST_SGL(-0.74036047190173f / 8.0) },
- { FL2FXCONST_SGL(-0.98512833386833f / 8.0), FL2FXCONST_SGL(-0.99972330709594f / 8.0) },
- { FL2FXCONST_SGL(-0.95915368242257f / 8.0), FL2FXCONST_SGL(-0.99237800466040f / 8.0) },
- { FL2FXCONST_SGL(-0.21411126572790f / 8.0), FL2FXCONST_SGL(-0.93424819052545f / 8.0) },
- { FL2FXCONST_SGL(-0.68821476106884f / 8.0), FL2FXCONST_SGL(-0.26892306315457f / 8.0) },
- { FL2FXCONST_SGL( 0.91851997982317f / 8.0), FL2FXCONST_SGL( 0.09358228901785f / 8.0) },
- { FL2FXCONST_SGL(-0.96062769559127f / 8.0), FL2FXCONST_SGL( 0.36099095133739f / 8.0) },
- { FL2FXCONST_SGL( 0.51646184922287f / 8.0), FL2FXCONST_SGL(-0.71373332873917f / 8.0) },
- { FL2FXCONST_SGL( 0.61130721139669f / 8.0), FL2FXCONST_SGL( 0.46950141175917f / 8.0) },
- { FL2FXCONST_SGL( 0.47336129371299f / 8.0), FL2FXCONST_SGL(-0.27333178296162f / 8.0) },
- { FL2FXCONST_SGL( 0.90998308703519f / 8.0), FL2FXCONST_SGL( 0.96715662938132f / 8.0) },
- { FL2FXCONST_SGL( 0.44844799194357f / 8.0), FL2FXCONST_SGL( 0.99211574628306f / 8.0) },
- { FL2FXCONST_SGL( 0.66614891079092f / 8.0), FL2FXCONST_SGL( 0.96590176169121f / 8.0) },
- { FL2FXCONST_SGL( 0.74922239129237f / 8.0), FL2FXCONST_SGL(-0.89879858826087f / 8.0) },
- { FL2FXCONST_SGL(-0.99571588506485f / 8.0), FL2FXCONST_SGL( 0.52785521494349f / 8.0) },
- { FL2FXCONST_SGL( 0.97401082477563f / 8.0), FL2FXCONST_SGL(-0.16855870075190f / 8.0) },
- { FL2FXCONST_SGL( 0.72683747733879f / 8.0), FL2FXCONST_SGL(-0.48060774432251f / 8.0) },
- { FL2FXCONST_SGL( 0.95432193457128f / 8.0), FL2FXCONST_SGL( 0.68849603408441f / 8.0) },
- { FL2FXCONST_SGL(-0.72962208425191f / 8.0), FL2FXCONST_SGL(-0.76608443420917f / 8.0) },
- { FL2FXCONST_SGL(-0.85359479233537f / 8.0), FL2FXCONST_SGL( 0.88738125901579f / 8.0) },
- { FL2FXCONST_SGL(-0.81412430338535f / 8.0), FL2FXCONST_SGL(-0.97480768049637f / 8.0) },
- { FL2FXCONST_SGL(-0.87930772356786f / 8.0), FL2FXCONST_SGL( 0.74748307690436f / 8.0) },
- { FL2FXCONST_SGL(-0.71573331064977f / 8.0), FL2FXCONST_SGL(-0.98570608178923f / 8.0) },
- { FL2FXCONST_SGL( 0.83524300028228f / 8.0), FL2FXCONST_SGL( 0.83702537075163f / 8.0) },
- { FL2FXCONST_SGL(-0.48086065601423f / 8.0), FL2FXCONST_SGL(-0.98848504923531f / 8.0) },
- { FL2FXCONST_SGL( 0.97139128574778f / 8.0), FL2FXCONST_SGL( 0.80093621198236f / 8.0) },
- { FL2FXCONST_SGL( 0.51992825347895f / 8.0), FL2FXCONST_SGL( 0.80247631400510f / 8.0) },
- { FL2FXCONST_SGL(-0.00848591195325f / 8.0), FL2FXCONST_SGL(-0.76670128000486f / 8.0) },
- { FL2FXCONST_SGL(-0.70294374303036f / 8.0), FL2FXCONST_SGL( 0.55359910445577f / 8.0) },
- { FL2FXCONST_SGL(-0.95894428168140f / 8.0), FL2FXCONST_SGL(-0.43265504344783f / 8.0) },
- { FL2FXCONST_SGL( 0.97079252950321f / 8.0), FL2FXCONST_SGL( 0.09325857238682f / 8.0) },
- { FL2FXCONST_SGL(-0.92404293670797f / 8.0), FL2FXCONST_SGL( 0.85507704027855f / 8.0) },
- { FL2FXCONST_SGL(-0.69506469500450f / 8.0), FL2FXCONST_SGL( 0.98633412625459f / 8.0) },
- { FL2FXCONST_SGL( 0.26559203620024f / 8.0), FL2FXCONST_SGL( 0.73314307966524f / 8.0) },
- { FL2FXCONST_SGL( 0.28038443336943f / 8.0), FL2FXCONST_SGL( 0.14537913654427f / 8.0) },
- { FL2FXCONST_SGL(-0.74138124825523f / 8.0), FL2FXCONST_SGL( 0.99310339807762f / 8.0) },
- { FL2FXCONST_SGL(-0.01752795995444f / 8.0), FL2FXCONST_SGL(-0.82616635284178f / 8.0) },
- { FL2FXCONST_SGL(-0.55126773094930f / 8.0), FL2FXCONST_SGL(-0.98898543862153f / 8.0) },
- { FL2FXCONST_SGL( 0.97960898850996f / 8.0), FL2FXCONST_SGL(-0.94021446752851f / 8.0) },
- { FL2FXCONST_SGL(-0.99196309146936f / 8.0), FL2FXCONST_SGL( 0.67019017358456f / 8.0) },
- { FL2FXCONST_SGL(-0.67684928085260f / 8.0), FL2FXCONST_SGL( 0.12631491649378f / 8.0) },
- { FL2FXCONST_SGL( 0.09140039465500f / 8.0), FL2FXCONST_SGL(-0.20537731453108f / 8.0) },
- { FL2FXCONST_SGL(-0.71658965751996f / 8.0), FL2FXCONST_SGL(-0.97788200391224f / 8.0) },
- { FL2FXCONST_SGL( 0.81014640078925f / 8.0), FL2FXCONST_SGL( 0.53722648362443f / 8.0) },
- { FL2FXCONST_SGL( 0.40616991671205f / 8.0), FL2FXCONST_SGL(-0.26469008598449f / 8.0) },
- { FL2FXCONST_SGL(-0.67680188682972f / 8.0), FL2FXCONST_SGL( 0.94502052337695f / 8.0) },
- { FL2FXCONST_SGL( 0.86849774348749f / 8.0), FL2FXCONST_SGL(-0.18333598647899f / 8.0) },
- { FL2FXCONST_SGL(-0.99500381284851f / 8.0), FL2FXCONST_SGL(-0.02634122068550f / 8.0) },
- { FL2FXCONST_SGL( 0.84329189340667f / 8.0), FL2FXCONST_SGL( 0.10406957462213f / 8.0) },
- { FL2FXCONST_SGL(-0.09215968531446f / 8.0), FL2FXCONST_SGL( 0.69540012101253f / 8.0) },
- { FL2FXCONST_SGL( 0.99956173327206f / 8.0), FL2FXCONST_SGL(-0.12358542001404f / 8.0) },
- { FL2FXCONST_SGL(-0.79732779473535f / 8.0), FL2FXCONST_SGL(-0.91582524736159f / 8.0) },
- { FL2FXCONST_SGL( 0.96349973642406f / 8.0), FL2FXCONST_SGL( 0.96640458041000f / 8.0) },
- { FL2FXCONST_SGL(-0.79942778496547f / 8.0), FL2FXCONST_SGL( 0.64323902822857f / 8.0) },
- { FL2FXCONST_SGL(-0.11566039853896f / 8.0), FL2FXCONST_SGL( 0.28587846253726f / 8.0) },
- { FL2FXCONST_SGL(-0.39922954514662f / 8.0), FL2FXCONST_SGL( 0.94129601616966f / 8.0) },
- { FL2FXCONST_SGL( 0.99089197565987f / 8.0), FL2FXCONST_SGL(-0.92062625581587f / 8.0) },
- { FL2FXCONST_SGL( 0.28631285179909f / 8.0), FL2FXCONST_SGL(-0.91035047143603f / 8.0) },
- { FL2FXCONST_SGL(-0.83302725605608f / 8.0), FL2FXCONST_SGL(-0.67330410892084f / 8.0) },
- { FL2FXCONST_SGL( 0.95404443402072f / 8.0), FL2FXCONST_SGL( 0.49162765398743f / 8.0) },
- { FL2FXCONST_SGL(-0.06449863579434f / 8.0), FL2FXCONST_SGL( 0.03250560813135f / 8.0) },
- { FL2FXCONST_SGL(-0.99575054486311f / 8.0), FL2FXCONST_SGL( 0.42389784469507f / 8.0) },
- { FL2FXCONST_SGL(-0.65501142790847f / 8.0), FL2FXCONST_SGL( 0.82546114655624f / 8.0) },
- { FL2FXCONST_SGL(-0.81254441908887f / 8.0), FL2FXCONST_SGL(-0.51627234660629f / 8.0) },
- { FL2FXCONST_SGL(-0.99646369485481f / 8.0), FL2FXCONST_SGL( 0.84490533520752f / 8.0) },
- { FL2FXCONST_SGL( 0.00287840603348f / 8.0), FL2FXCONST_SGL( 0.64768261158166f / 8.0) },
- { FL2FXCONST_SGL( 0.70176989408455f / 8.0), FL2FXCONST_SGL(-0.20453028573322f / 8.0) },
- { FL2FXCONST_SGL( 0.96361882270190f / 8.0), FL2FXCONST_SGL( 0.40706967140989f / 8.0) },
- { FL2FXCONST_SGL(-0.68883758192426f / 8.0), FL2FXCONST_SGL( 0.91338958840772f / 8.0) },
- { FL2FXCONST_SGL(-0.34875585502238f / 8.0), FL2FXCONST_SGL( 0.71472290693300f / 8.0) },
- { FL2FXCONST_SGL( 0.91980081243087f / 8.0), FL2FXCONST_SGL( 0.66507455644919f / 8.0) },
- { FL2FXCONST_SGL(-0.99009048343881f / 8.0), FL2FXCONST_SGL( 0.85868021604848f / 8.0) },
- { FL2FXCONST_SGL( 0.68865791458395f / 8.0), FL2FXCONST_SGL( 0.55660316809678f / 8.0) },
- { FL2FXCONST_SGL(-0.99484402129368f / 8.0), FL2FXCONST_SGL(-0.20052559254934f / 8.0) },
- { FL2FXCONST_SGL( 0.94214511408023f / 8.0), FL2FXCONST_SGL(-0.99696425367461f / 8.0) },
- { FL2FXCONST_SGL(-0.67414626793544f / 8.0), FL2FXCONST_SGL( 0.49548221180078f / 8.0) },
- { FL2FXCONST_SGL(-0.47339353684664f / 8.0), FL2FXCONST_SGL(-0.85904328834047f / 8.0) },
- { FL2FXCONST_SGL( 0.14323651387360f / 8.0), FL2FXCONST_SGL(-0.94145598222488f / 8.0) },
- { FL2FXCONST_SGL(-0.29268293575672f / 8.0), FL2FXCONST_SGL( 0.05759224927952f / 8.0) },
- { FL2FXCONST_SGL( 0.43793861458754f / 8.0), FL2FXCONST_SGL(-0.78904969892724f / 8.0) },
- { FL2FXCONST_SGL(-0.36345126374441f / 8.0), FL2FXCONST_SGL( 0.64874435357162f / 8.0) },
- { FL2FXCONST_SGL(-0.08750604656825f / 8.0), FL2FXCONST_SGL( 0.97686944362527f / 8.0) },
- { FL2FXCONST_SGL(-0.96495267812511f / 8.0), FL2FXCONST_SGL(-0.53960305946511f / 8.0) },
- { FL2FXCONST_SGL( 0.55526940659947f / 8.0), FL2FXCONST_SGL( 0.78891523734774f / 8.0) },
- { FL2FXCONST_SGL( 0.73538215752630f / 8.0), FL2FXCONST_SGL( 0.96452072373404f / 8.0) },
- { FL2FXCONST_SGL(-0.30889773919437f / 8.0), FL2FXCONST_SGL(-0.80664389776860f / 8.0) },
- { FL2FXCONST_SGL( 0.03574995626194f / 8.0), FL2FXCONST_SGL(-0.97325616900959f / 8.0) },
- { FL2FXCONST_SGL( 0.98720684660488f / 8.0), FL2FXCONST_SGL( 0.48409133691962f / 8.0) },
- { FL2FXCONST_SGL(-0.81689296271203f / 8.0), FL2FXCONST_SGL(-0.90827703628298f / 8.0) },
- { FL2FXCONST_SGL( 0.67866860118215f / 8.0), FL2FXCONST_SGL( 0.81284503870856f / 8.0) },
- { FL2FXCONST_SGL(-0.15808569732583f / 8.0), FL2FXCONST_SGL( 0.85279555024382f / 8.0) },
- { FL2FXCONST_SGL( 0.80723395114371f / 8.0), FL2FXCONST_SGL(-0.24717418514605f / 8.0) },
- { FL2FXCONST_SGL( 0.47788757329038f / 8.0), FL2FXCONST_SGL(-0.46333147839295f / 8.0) },
- { FL2FXCONST_SGL( 0.96367554763201f / 8.0), FL2FXCONST_SGL( 0.38486749303242f / 8.0) },
- { FL2FXCONST_SGL(-0.99143875716818f / 8.0), FL2FXCONST_SGL(-0.24945277239809f / 8.0) },
- { FL2FXCONST_SGL( 0.83081876925833f / 8.0), FL2FXCONST_SGL(-0.94780851414763f / 8.0) },
- { FL2FXCONST_SGL(-0.58753191905341f / 8.0), FL2FXCONST_SGL( 0.01290772389163f / 8.0) },
- { FL2FXCONST_SGL( 0.95538108220960f / 8.0), FL2FXCONST_SGL(-0.85557052096538f / 8.0) },
- { FL2FXCONST_SGL(-0.96490920476211f / 8.0), FL2FXCONST_SGL(-0.64020970923102f / 8.0) },
- { FL2FXCONST_SGL(-0.97327101028521f / 8.0), FL2FXCONST_SGL( 0.12378128133110f / 8.0) },
- { FL2FXCONST_SGL( 0.91400366022124f / 8.0), FL2FXCONST_SGL( 0.57972471346930f / 8.0) },
- { FL2FXCONST_SGL(-0.99925837363824f / 8.0), FL2FXCONST_SGL( 0.71084847864067f / 8.0) },
- { FL2FXCONST_SGL(-0.86875903507313f / 8.0), FL2FXCONST_SGL(-0.20291699203564f / 8.0) },
- { FL2FXCONST_SGL(-0.26240034795124f / 8.0), FL2FXCONST_SGL(-0.68264554369108f / 8.0) },
- { FL2FXCONST_SGL(-0.24664412953388f / 8.0), FL2FXCONST_SGL(-0.87642273115183f / 8.0) },
- { FL2FXCONST_SGL( 0.02416275806869f / 8.0), FL2FXCONST_SGL( 0.27192914288905f / 8.0) },
- { FL2FXCONST_SGL( 0.82068619590515f / 8.0), FL2FXCONST_SGL(-0.85087787994476f / 8.0) },
- { FL2FXCONST_SGL( 0.88547373760759f / 8.0), FL2FXCONST_SGL(-0.89636802901469f / 8.0) },
- { FL2FXCONST_SGL(-0.18173078152226f / 8.0), FL2FXCONST_SGL(-0.26152145156800f / 8.0) },
- { FL2FXCONST_SGL( 0.09355476558534f / 8.0), FL2FXCONST_SGL( 0.54845123045604f / 8.0) },
- { FL2FXCONST_SGL(-0.54668414224090f / 8.0), FL2FXCONST_SGL( 0.95980774020221f / 8.0) },
- { FL2FXCONST_SGL( 0.37050990604091f / 8.0), FL2FXCONST_SGL(-0.59910140383171f / 8.0) },
- { FL2FXCONST_SGL(-0.70373594262891f / 8.0), FL2FXCONST_SGL( 0.91227665827081f / 8.0) },
- { FL2FXCONST_SGL(-0.34600785879594f / 8.0), FL2FXCONST_SGL(-0.99441426144200f / 8.0) },
- { FL2FXCONST_SGL(-0.68774481731008f / 8.0), FL2FXCONST_SGL(-0.30238837956299f / 8.0) },
- { FL2FXCONST_SGL(-0.26843291251234f / 8.0), FL2FXCONST_SGL( 0.83115668004362f / 8.0) },
- { FL2FXCONST_SGL( 0.49072334613242f / 8.0), FL2FXCONST_SGL(-0.45359708737775f / 8.0) },
- { FL2FXCONST_SGL( 0.38975993093975f / 8.0), FL2FXCONST_SGL( 0.95515358099121f / 8.0) },
- { FL2FXCONST_SGL(-0.97757125224150f / 8.0), FL2FXCONST_SGL( 0.05305894580606f / 8.0) },
- { FL2FXCONST_SGL(-0.17325552859616f / 8.0), FL2FXCONST_SGL(-0.92770672250494f / 8.0) },
- { FL2FXCONST_SGL( 0.99948035025744f / 8.0), FL2FXCONST_SGL( 0.58285545563426f / 8.0) },
- { FL2FXCONST_SGL(-0.64946246527458f / 8.0), FL2FXCONST_SGL( 0.68645507104960f / 8.0) },
- { FL2FXCONST_SGL(-0.12016920576437f / 8.0), FL2FXCONST_SGL(-0.57147322153312f / 8.0) },
- { FL2FXCONST_SGL(-0.58947456517751f / 8.0), FL2FXCONST_SGL(-0.34847132454388f / 8.0) },
- { FL2FXCONST_SGL(-0.41815140454465f / 8.0), FL2FXCONST_SGL( 0.16276422358861f / 8.0) },
- { FL2FXCONST_SGL( 0.99885650204884f / 8.0), FL2FXCONST_SGL( 0.11136095490444f / 8.0) },
- { FL2FXCONST_SGL(-0.56649614128386f / 8.0), FL2FXCONST_SGL(-0.90494866361587f / 8.0) },
- { FL2FXCONST_SGL( 0.94138021032330f / 8.0), FL2FXCONST_SGL( 0.35281916733018f / 8.0) },
- { FL2FXCONST_SGL(-0.75725076534641f / 8.0), FL2FXCONST_SGL( 0.53650549640587f / 8.0) },
- { FL2FXCONST_SGL( 0.20541973692630f / 8.0), FL2FXCONST_SGL(-0.94435144369918f / 8.0) },
- { FL2FXCONST_SGL( 0.99980371023351f / 8.0), FL2FXCONST_SGL( 0.79835913565599f / 8.0) },
- { FL2FXCONST_SGL( 0.29078277605775f / 8.0), FL2FXCONST_SGL( 0.35393777921520f / 8.0) },
- { FL2FXCONST_SGL(-0.62858772103030f / 8.0), FL2FXCONST_SGL( 0.38765693387102f / 8.0) },
- { FL2FXCONST_SGL( 0.43440904467688f / 8.0), FL2FXCONST_SGL(-0.98546330463232f / 8.0) },
- { FL2FXCONST_SGL(-0.98298583762390f / 8.0), FL2FXCONST_SGL( 0.21021524625209f / 8.0) },
- { FL2FXCONST_SGL( 0.19513029146934f / 8.0), FL2FXCONST_SGL(-0.94239832251867f / 8.0) },
- { FL2FXCONST_SGL(-0.95476662400101f / 8.0), FL2FXCONST_SGL( 0.98364554179143f / 8.0) },
- { FL2FXCONST_SGL( 0.93379635304810f / 8.0), FL2FXCONST_SGL(-0.70881994583682f / 8.0) },
- { FL2FXCONST_SGL(-0.85235410573336f / 8.0), FL2FXCONST_SGL(-0.08342347966410f / 8.0) },
- { FL2FXCONST_SGL(-0.86425093011245f / 8.0), FL2FXCONST_SGL(-0.45795025029466f / 8.0) },
- { FL2FXCONST_SGL( 0.38879779059045f / 8.0), FL2FXCONST_SGL( 0.97274429344593f / 8.0) },
- { FL2FXCONST_SGL( 0.92045124735495f / 8.0), FL2FXCONST_SGL(-0.62433652524220f / 8.0) },
- { FL2FXCONST_SGL( 0.89162532251878f / 8.0), FL2FXCONST_SGL( 0.54950955570563f / 8.0) },
- { FL2FXCONST_SGL(-0.36834336949252f / 8.0), FL2FXCONST_SGL( 0.96458298020975f / 8.0) },
- { FL2FXCONST_SGL( 0.93891760988045f / 8.0), FL2FXCONST_SGL(-0.89968353740388f / 8.0) },
- { FL2FXCONST_SGL( 0.99267657565094f / 8.0), FL2FXCONST_SGL(-0.03757034316958f / 8.0) },
- { FL2FXCONST_SGL(-0.94063471614176f / 8.0), FL2FXCONST_SGL( 0.41332338538963f / 8.0) },
- { FL2FXCONST_SGL( 0.99740224117019f / 8.0), FL2FXCONST_SGL(-0.16830494996370f / 8.0) },
- { FL2FXCONST_SGL(-0.35899413170555f / 8.0), FL2FXCONST_SGL(-0.46633226649613f / 8.0) },
- { FL2FXCONST_SGL( 0.05237237274947f / 8.0), FL2FXCONST_SGL(-0.25640361602661f / 8.0) },
- { FL2FXCONST_SGL( 0.36703583957424f / 8.0), FL2FXCONST_SGL(-0.38653265641875f / 8.0) },
- { FL2FXCONST_SGL( 0.91653180367913f / 8.0), FL2FXCONST_SGL(-0.30587628726597f / 8.0) },
- { FL2FXCONST_SGL( 0.69000803499316f / 8.0), FL2FXCONST_SGL( 0.90952171386132f / 8.0) },
- { FL2FXCONST_SGL(-0.38658751133527f / 8.0), FL2FXCONST_SGL( 0.99501571208985f / 8.0) },
- { FL2FXCONST_SGL(-0.29250814029851f / 8.0), FL2FXCONST_SGL( 0.37444994344615f / 8.0) },
- { FL2FXCONST_SGL(-0.60182204677608f / 8.0), FL2FXCONST_SGL( 0.86779651036123f / 8.0) },
- { FL2FXCONST_SGL(-0.97418588163217f / 8.0), FL2FXCONST_SGL( 0.96468523666475f / 8.0) },
- { FL2FXCONST_SGL( 0.88461574003963f / 8.0), FL2FXCONST_SGL( 0.57508405276414f / 8.0) },
- { FL2FXCONST_SGL( 0.05198933055162f / 8.0), FL2FXCONST_SGL( 0.21269661669964f / 8.0) },
- { FL2FXCONST_SGL(-0.53499621979720f / 8.0), FL2FXCONST_SGL( 0.97241553731237f / 8.0) },
- { FL2FXCONST_SGL(-0.49429560226497f / 8.0), FL2FXCONST_SGL( 0.98183865291903f / 8.0) },
- { FL2FXCONST_SGL(-0.98935142339139f / 8.0), FL2FXCONST_SGL(-0.40249159006933f / 8.0) },
- { FL2FXCONST_SGL(-0.98081380091130f / 8.0), FL2FXCONST_SGL(-0.72856895534041f / 8.0) },
- { FL2FXCONST_SGL(-0.27338148835532f / 8.0), FL2FXCONST_SGL( 0.99950922447209f / 8.0) },
- { FL2FXCONST_SGL( 0.06310802338302f / 8.0), FL2FXCONST_SGL(-0.54539587529618f / 8.0) },
- { FL2FXCONST_SGL(-0.20461677199539f / 8.0), FL2FXCONST_SGL(-0.14209977628489f / 8.0) },
- { FL2FXCONST_SGL( 0.66223843141647f / 8.0), FL2FXCONST_SGL( 0.72528579940326f / 8.0) },
- { FL2FXCONST_SGL(-0.84764345483665f / 8.0), FL2FXCONST_SGL( 0.02372316801261f / 8.0) },
- { FL2FXCONST_SGL(-0.89039863483811f / 8.0), FL2FXCONST_SGL( 0.88866581484602f / 8.0) },
- { FL2FXCONST_SGL( 0.95903308477986f / 8.0), FL2FXCONST_SGL( 0.76744927173873f / 8.0) },
- { FL2FXCONST_SGL( 0.73504123909879f / 8.0), FL2FXCONST_SGL(-0.03747203173192f / 8.0) },
- { FL2FXCONST_SGL(-0.31744434966056f / 8.0), FL2FXCONST_SGL(-0.36834111883652f / 8.0) },
- { FL2FXCONST_SGL(-0.34110827591623f / 8.0), FL2FXCONST_SGL( 0.40211222807691f / 8.0) },
- { FL2FXCONST_SGL( 0.47803883714199f / 8.0), FL2FXCONST_SGL(-0.39423219786288f / 8.0) },
- { FL2FXCONST_SGL( 0.98299195879514f / 8.0), FL2FXCONST_SGL( 0.01989791390047f / 8.0) },
- { FL2FXCONST_SGL(-0.30963073129751f / 8.0), FL2FXCONST_SGL(-0.18076720599336f / 8.0) },
- { FL2FXCONST_SGL( 0.99992588229018f / 8.0), FL2FXCONST_SGL(-0.26281872094289f / 8.0) },
- { FL2FXCONST_SGL(-0.93149731080767f / 8.0), FL2FXCONST_SGL(-0.98313162570490f / 8.0) },
- { FL2FXCONST_SGL( 0.99923472302773f / 8.0), FL2FXCONST_SGL(-0.80142993767554f / 8.0) },
- { FL2FXCONST_SGL(-0.26024169633417f / 8.0), FL2FXCONST_SGL(-0.75999759855752f / 8.0) },
- { FL2FXCONST_SGL(-0.35712514743563f / 8.0), FL2FXCONST_SGL( 0.19298963768574f / 8.0) },
- { FL2FXCONST_SGL(-0.99899084509530f / 8.0), FL2FXCONST_SGL( 0.74645156992493f / 8.0) },
- { FL2FXCONST_SGL( 0.86557171579452f / 8.0), FL2FXCONST_SGL( 0.55593866696299f / 8.0) },
- { FL2FXCONST_SGL( 0.33408042438752f / 8.0), FL2FXCONST_SGL( 0.86185953874709f / 8.0) },
- { FL2FXCONST_SGL( 0.99010736374716f / 8.0), FL2FXCONST_SGL( 0.04602397576623f / 8.0) },
- { FL2FXCONST_SGL(-0.66694269691195f / 8.0), FL2FXCONST_SGL(-0.91643611810148f / 8.0) },
- { FL2FXCONST_SGL( 0.64016792079480f / 8.0), FL2FXCONST_SGL( 0.15649530836856f / 8.0) },
- { FL2FXCONST_SGL( 0.99570534804836f / 8.0), FL2FXCONST_SGL( 0.45844586038111f / 8.0) },
- { FL2FXCONST_SGL(-0.63431466947340f / 8.0), FL2FXCONST_SGL( 0.21079116459234f / 8.0) },
- { FL2FXCONST_SGL(-0.07706847005931f / 8.0), FL2FXCONST_SGL(-0.89581437101329f / 8.0) },
- { FL2FXCONST_SGL( 0.98590090577724f / 8.0), FL2FXCONST_SGL( 0.88241721133981f / 8.0) },
- { FL2FXCONST_SGL( 0.80099335254678f / 8.0), FL2FXCONST_SGL(-0.36851896710853f / 8.0) },
- { FL2FXCONST_SGL( 0.78368131392666f / 8.0), FL2FXCONST_SGL( 0.45506999802597f / 8.0) },
- { FL2FXCONST_SGL( 0.08707806671691f / 8.0), FL2FXCONST_SGL( 0.80938994918745f / 8.0) },
- { FL2FXCONST_SGL(-0.86811883080712f / 8.0), FL2FXCONST_SGL( 0.39347308654705f / 8.0) },
- { FL2FXCONST_SGL(-0.39466529740375f / 8.0), FL2FXCONST_SGL(-0.66809432114456f / 8.0) },
- { FL2FXCONST_SGL( 0.97875325649683f / 8.0), FL2FXCONST_SGL(-0.72467840967746f / 8.0) },
- { FL2FXCONST_SGL(-0.95038560288864f / 8.0), FL2FXCONST_SGL( 0.89563219587625f / 8.0) },
- { FL2FXCONST_SGL( 0.17005239424212f / 8.0), FL2FXCONST_SGL( 0.54683053962658f / 8.0) },
- { FL2FXCONST_SGL(-0.76910792026848f / 8.0), FL2FXCONST_SGL(-0.96226617549298f / 8.0) },
- { FL2FXCONST_SGL( 0.99743281016846f / 8.0), FL2FXCONST_SGL( 0.42697157037567f / 8.0) },
- { FL2FXCONST_SGL( 0.95437383549973f / 8.0), FL2FXCONST_SGL( 0.97002324109952f / 8.0) },
- { FL2FXCONST_SGL( 0.99578905365569f / 8.0), FL2FXCONST_SGL(-0.54106826257356f / 8.0) },
- { FL2FXCONST_SGL( 0.28058259829990f / 8.0), FL2FXCONST_SGL(-0.85361420634036f / 8.0) },
- { FL2FXCONST_SGL( 0.85256524470573f / 8.0), FL2FXCONST_SGL(-0.64567607735589f / 8.0) },
- { FL2FXCONST_SGL(-0.50608540105128f / 8.0), FL2FXCONST_SGL(-0.65846015480300f / 8.0) },
- { FL2FXCONST_SGL(-0.97210735183243f / 8.0), FL2FXCONST_SGL(-0.23095213067791f / 8.0) },
- { FL2FXCONST_SGL( 0.95424048234441f / 8.0), FL2FXCONST_SGL(-0.99240147091219f / 8.0) },
- { FL2FXCONST_SGL(-0.96926570524023f / 8.0), FL2FXCONST_SGL( 0.73775654896574f / 8.0) },
- { FL2FXCONST_SGL( 0.30872163214726f / 8.0), FL2FXCONST_SGL( 0.41514960556126f / 8.0) },
- { FL2FXCONST_SGL(-0.24523839572639f / 8.0), FL2FXCONST_SGL( 0.63206633394807f / 8.0) },
- { FL2FXCONST_SGL(-0.33813265086024f / 8.0), FL2FXCONST_SGL(-0.38661779441897f / 8.0) },
- { FL2FXCONST_SGL(-0.05826828420146f / 8.0), FL2FXCONST_SGL(-0.06940774188029f / 8.0) },
- { FL2FXCONST_SGL(-0.22898461455054f / 8.0), FL2FXCONST_SGL( 0.97054853316316f / 8.0) },
- { FL2FXCONST_SGL(-0.18509915019881f / 8.0), FL2FXCONST_SGL( 0.47565762892084f / 8.0) },
- { FL2FXCONST_SGL(-0.10488238045009f / 8.0), FL2FXCONST_SGL(-0.87769947402394f / 8.0) },
- { FL2FXCONST_SGL(-0.71886586182037f / 8.0), FL2FXCONST_SGL( 0.78030982480538f / 8.0) },
- { FL2FXCONST_SGL( 0.99793873738654f / 8.0), FL2FXCONST_SGL( 0.90041310491497f / 8.0) },
- { FL2FXCONST_SGL( 0.57563307626120f / 8.0), FL2FXCONST_SGL(-0.91034337352097f / 8.0) },
- { FL2FXCONST_SGL( 0.28909646383717f / 8.0), FL2FXCONST_SGL( 0.96307783970534f / 8.0) },
- { FL2FXCONST_SGL( 0.42188998312520f / 8.0), FL2FXCONST_SGL( 0.48148651230437f / 8.0) },
- { FL2FXCONST_SGL( 0.93335049681047f / 8.0), FL2FXCONST_SGL(-0.43537023883588f / 8.0) },
- { FL2FXCONST_SGL(-0.97087374418267f / 8.0), FL2FXCONST_SGL( 0.86636445711364f / 8.0) },
- { FL2FXCONST_SGL( 0.36722871286923f / 8.0), FL2FXCONST_SGL( 0.65291654172961f / 8.0) },
- { FL2FXCONST_SGL(-0.81093025665696f / 8.0), FL2FXCONST_SGL( 0.08778370229363f / 8.0) },
- { FL2FXCONST_SGL(-0.26240603062237f / 8.0), FL2FXCONST_SGL(-0.92774095379098f / 8.0) },
- { FL2FXCONST_SGL( 0.83996497984604f / 8.0), FL2FXCONST_SGL( 0.55839849139647f / 8.0) },
- { FL2FXCONST_SGL(-0.99909615720225f / 8.0), FL2FXCONST_SGL(-0.96024605713970f / 8.0) },
- { FL2FXCONST_SGL( 0.74649464155061f / 8.0), FL2FXCONST_SGL( 0.12144893606462f / 8.0) },
- { FL2FXCONST_SGL(-0.74774595569805f / 8.0), FL2FXCONST_SGL(-0.26898062008959f / 8.0) },
- { FL2FXCONST_SGL( 0.95781667469567f / 8.0), FL2FXCONST_SGL(-0.79047927052628f / 8.0) },
- { FL2FXCONST_SGL( 0.95472308713099f / 8.0), FL2FXCONST_SGL(-0.08588776019550f / 8.0) },
- { FL2FXCONST_SGL( 0.48708332746299f / 8.0), FL2FXCONST_SGL( 0.99999041579432f / 8.0) },
- { FL2FXCONST_SGL( 0.46332038247497f / 8.0), FL2FXCONST_SGL( 0.10964126185063f / 8.0) },
- { FL2FXCONST_SGL(-0.76497004940162f / 8.0), FL2FXCONST_SGL( 0.89210929242238f / 8.0) },
- { FL2FXCONST_SGL( 0.57397389364339f / 8.0), FL2FXCONST_SGL( 0.35289703373760f / 8.0) },
- { FL2FXCONST_SGL( 0.75374316974495f / 8.0), FL2FXCONST_SGL( 0.96705214651335f / 8.0) },
- { FL2FXCONST_SGL(-0.59174397685714f / 8.0), FL2FXCONST_SGL(-0.89405370422752f / 8.0) },
- { FL2FXCONST_SGL( 0.75087906691890f / 8.0), FL2FXCONST_SGL(-0.29612672982396f / 8.0) },
- { FL2FXCONST_SGL(-0.98607857336230f / 8.0), FL2FXCONST_SGL( 0.25034911730023f / 8.0) },
- { FL2FXCONST_SGL(-0.40761056640505f / 8.0), FL2FXCONST_SGL(-0.90045573444695f / 8.0) },
- { FL2FXCONST_SGL( 0.66929266740477f / 8.0), FL2FXCONST_SGL( 0.98629493401748f / 8.0) },
- { FL2FXCONST_SGL(-0.97463695257310f / 8.0), FL2FXCONST_SGL(-0.00190223301301f / 8.0) },
- { FL2FXCONST_SGL( 0.90145509409859f / 8.0), FL2FXCONST_SGL( 0.99781390365446f / 8.0) },
- { FL2FXCONST_SGL(-0.87259289048043f / 8.0), FL2FXCONST_SGL( 0.99233587353666f / 8.0) },
- { FL2FXCONST_SGL(-0.91529461447692f / 8.0), FL2FXCONST_SGL(-0.15698707534206f / 8.0) },
- { FL2FXCONST_SGL(-0.03305738840705f / 8.0), FL2FXCONST_SGL(-0.37205262859764f / 8.0) },
- { FL2FXCONST_SGL( 0.07223051368337f / 8.0), FL2FXCONST_SGL(-0.88805001733626f / 8.0) },
- { FL2FXCONST_SGL( 0.99498012188353f / 8.0), FL2FXCONST_SGL( 0.97094358113387f / 8.0) },
- { FL2FXCONST_SGL(-0.74904939500519f / 8.0), FL2FXCONST_SGL( 0.99985483641521f / 8.0) },
- { FL2FXCONST_SGL( 0.04585228574211f / 8.0), FL2FXCONST_SGL( 0.99812337444082f / 8.0) },
- { FL2FXCONST_SGL(-0.89054954257993f / 8.0), FL2FXCONST_SGL(-0.31791913188064f / 8.0) },
- { FL2FXCONST_SGL(-0.83782144651251f / 8.0), FL2FXCONST_SGL( 0.97637632547466f / 8.0) },
- { FL2FXCONST_SGL( 0.33454804933804f / 8.0), FL2FXCONST_SGL(-0.86231516800408f / 8.0) },
- { FL2FXCONST_SGL(-0.99707579362824f / 8.0), FL2FXCONST_SGL( 0.93237990079441f / 8.0) },
- { FL2FXCONST_SGL(-0.22827527843994f / 8.0), FL2FXCONST_SGL( 0.18874759397997f / 8.0) },
- { FL2FXCONST_SGL( 0.67248046289143f / 8.0), FL2FXCONST_SGL(-0.03646211390569f / 8.0) },
- { FL2FXCONST_SGL(-0.05146538187944f / 8.0), FL2FXCONST_SGL(-0.92599700120679f / 8.0) },
- { FL2FXCONST_SGL( 0.99947295749905f / 8.0), FL2FXCONST_SGL( 0.93625229707912f / 8.0) },
- { FL2FXCONST_SGL( 0.66951124390363f / 8.0), FL2FXCONST_SGL( 0.98905825623893f / 8.0) },
- { FL2FXCONST_SGL(-0.99602956559179f / 8.0), FL2FXCONST_SGL(-0.44654715757688f / 8.0) },
- { FL2FXCONST_SGL( 0.82104905483590f / 8.0), FL2FXCONST_SGL( 0.99540741724928f / 8.0) },
- { FL2FXCONST_SGL( 0.99186510988782f / 8.0), FL2FXCONST_SGL( 0.72023001312947f / 8.0) },
- { FL2FXCONST_SGL(-0.65284592392918f / 8.0), FL2FXCONST_SGL( 0.52186723253637f / 8.0) },
- { FL2FXCONST_SGL( 0.93885443798188f / 8.0), FL2FXCONST_SGL(-0.74895312615259f / 8.0) },
- { FL2FXCONST_SGL( 0.96735248738388f / 8.0), FL2FXCONST_SGL( 0.90891816978629f / 8.0) },
- { FL2FXCONST_SGL(-0.22225968841114f / 8.0), FL2FXCONST_SGL( 0.57124029781228f / 8.0) },
- { FL2FXCONST_SGL(-0.44132783753414f / 8.0), FL2FXCONST_SGL(-0.92688840659280f / 8.0) },
- { FL2FXCONST_SGL(-0.85694974219574f / 8.0), FL2FXCONST_SGL( 0.88844532719844f / 8.0) },
- { FL2FXCONST_SGL( 0.91783042091762f / 8.0), FL2FXCONST_SGL(-0.46356892383970f / 8.0) },
- { FL2FXCONST_SGL( 0.72556974415690f / 8.0), FL2FXCONST_SGL(-0.99899555770747f / 8.0) },
- { FL2FXCONST_SGL(-0.99711581834508f / 8.0), FL2FXCONST_SGL( 0.58211560180426f / 8.0) },
- { FL2FXCONST_SGL( 0.77638976371966f / 8.0), FL2FXCONST_SGL( 0.94321834873819f / 8.0) },
- { FL2FXCONST_SGL( 0.07717324253925f / 8.0), FL2FXCONST_SGL( 0.58638399856595f / 8.0) },
- { FL2FXCONST_SGL(-0.56049829194163f / 8.0), FL2FXCONST_SGL( 0.82522301569036f / 8.0) },
- { FL2FXCONST_SGL( 0.98398893639988f / 8.0), FL2FXCONST_SGL( 0.39467440420569f / 8.0) },
- { FL2FXCONST_SGL( 0.47546946844938f / 8.0), FL2FXCONST_SGL( 0.68613044836811f / 8.0) },
- { FL2FXCONST_SGL( 0.65675089314631f / 8.0), FL2FXCONST_SGL( 0.18331637134880f / 8.0) },
- { FL2FXCONST_SGL( 0.03273375457980f / 8.0), FL2FXCONST_SGL(-0.74933109564108f / 8.0) },
- { FL2FXCONST_SGL(-0.38684144784738f / 8.0), FL2FXCONST_SGL( 0.51337349030406f / 8.0) },
- { FL2FXCONST_SGL(-0.97346267944545f / 8.0), FL2FXCONST_SGL(-0.96549364384098f / 8.0) },
- { FL2FXCONST_SGL(-0.53282156061942f / 8.0), FL2FXCONST_SGL(-0.91423265091354f / 8.0) },
- { FL2FXCONST_SGL( 0.99817310731176f / 8.0), FL2FXCONST_SGL( 0.61133572482148f / 8.0) },
- { FL2FXCONST_SGL(-0.50254500772635f / 8.0), FL2FXCONST_SGL(-0.88829338134294f / 8.0) },
- { FL2FXCONST_SGL( 0.01995873238855f / 8.0), FL2FXCONST_SGL( 0.85223515096765f / 8.0) },
- { FL2FXCONST_SGL( 0.99930381973804f / 8.0), FL2FXCONST_SGL( 0.94578896296649f / 8.0) },
- { FL2FXCONST_SGL( 0.82907767600783f / 8.0), FL2FXCONST_SGL(-0.06323442598128f / 8.0) },
- { FL2FXCONST_SGL(-0.58660709669728f / 8.0), FL2FXCONST_SGL( 0.96840773806582f / 8.0) },
- { FL2FXCONST_SGL(-0.17573736667267f / 8.0), FL2FXCONST_SGL(-0.48166920859485f / 8.0) },
- { FL2FXCONST_SGL( 0.83434292401346f / 8.0), FL2FXCONST_SGL(-0.13023450646997f / 8.0) },
- { FL2FXCONST_SGL( 0.05946491307025f / 8.0), FL2FXCONST_SGL( 0.20511047074866f / 8.0) },
- { FL2FXCONST_SGL( 0.81505484574602f / 8.0), FL2FXCONST_SGL(-0.94685947861369f / 8.0) },
- { FL2FXCONST_SGL(-0.44976380954860f / 8.0), FL2FXCONST_SGL( 0.40894572671545f / 8.0) },
- { FL2FXCONST_SGL(-0.89746474625671f / 8.0), FL2FXCONST_SGL( 0.99846578838537f / 8.0) },
- { FL2FXCONST_SGL( 0.39677256130792f / 8.0), FL2FXCONST_SGL(-0.74854668609359f / 8.0) },
- { FL2FXCONST_SGL(-0.07588948563079f / 8.0), FL2FXCONST_SGL( 0.74096214084170f / 8.0) },
- { FL2FXCONST_SGL( 0.76343198951445f / 8.0), FL2FXCONST_SGL( 0.41746629422634f / 8.0) },
- { FL2FXCONST_SGL(-0.74490104699626f / 8.0), FL2FXCONST_SGL( 0.94725911744610f / 8.0) },
- { FL2FXCONST_SGL( 0.64880119792759f / 8.0), FL2FXCONST_SGL( 0.41336660830571f / 8.0) },
- { FL2FXCONST_SGL( 0.62319537462542f / 8.0), FL2FXCONST_SGL(-0.93098313552599f / 8.0) },
- { FL2FXCONST_SGL( 0.42215817594807f / 8.0), FL2FXCONST_SGL(-0.07712787385208f / 8.0) },
- { FL2FXCONST_SGL( 0.02704554141885f / 8.0), FL2FXCONST_SGL(-0.05417518053666f / 8.0) },
- { FL2FXCONST_SGL( 0.80001773566818f / 8.0), FL2FXCONST_SGL( 0.91542195141039f / 8.0) },
- { FL2FXCONST_SGL(-0.79351832348816f / 8.0), FL2FXCONST_SGL(-0.36208897989136f / 8.0) },
- { FL2FXCONST_SGL( 0.63872359151636f / 8.0), FL2FXCONST_SGL( 0.08128252493444f / 8.0) },
- { FL2FXCONST_SGL( 0.52890520960295f / 8.0), FL2FXCONST_SGL( 0.60048872455592f / 8.0) },
- { FL2FXCONST_SGL( 0.74238552914587f / 8.0), FL2FXCONST_SGL( 0.04491915291044f / 8.0) },
- { FL2FXCONST_SGL( 0.99096131449250f / 8.0), FL2FXCONST_SGL(-0.19451182854402f / 8.0) },
- { FL2FXCONST_SGL(-0.80412329643109f / 8.0), FL2FXCONST_SGL(-0.88513818199457f / 8.0) },
- { FL2FXCONST_SGL(-0.64612616129736f / 8.0), FL2FXCONST_SGL( 0.72198674804544f / 8.0) },
- { FL2FXCONST_SGL( 0.11657770663191f / 8.0), FL2FXCONST_SGL(-0.83662833815041f / 8.0) },
- { FL2FXCONST_SGL(-0.95053182488101f / 8.0), FL2FXCONST_SGL(-0.96939905138082f / 8.0) },
- { FL2FXCONST_SGL(-0.62228872928622f / 8.0), FL2FXCONST_SGL( 0.82767262846661f / 8.0) },
- { FL2FXCONST_SGL( 0.03004475787316f / 8.0), FL2FXCONST_SGL(-0.99738896333384f / 8.0) },
- { FL2FXCONST_SGL(-0.97987214341034f / 8.0), FL2FXCONST_SGL( 0.36526129686425f / 8.0) },
- { FL2FXCONST_SGL(-0.99986980746200f / 8.0), FL2FXCONST_SGL(-0.36021610299715f / 8.0) },
- { FL2FXCONST_SGL( 0.89110648599879f / 8.0), FL2FXCONST_SGL(-0.97894250343044f / 8.0) },
- { FL2FXCONST_SGL( 0.10407960510582f / 8.0), FL2FXCONST_SGL( 0.77357793811619f / 8.0) },
- { FL2FXCONST_SGL( 0.95964737821728f / 8.0), FL2FXCONST_SGL(-0.35435818285502f / 8.0) },
- { FL2FXCONST_SGL( 0.50843233159162f / 8.0), FL2FXCONST_SGL( 0.96107691266205f / 8.0) },
- { FL2FXCONST_SGL( 0.17006334670615f / 8.0), FL2FXCONST_SGL(-0.76854025314829f / 8.0) },
- { FL2FXCONST_SGL( 0.25872675063360f / 8.0), FL2FXCONST_SGL( 0.99893303933816f / 8.0) },
- { FL2FXCONST_SGL(-0.01115998681937f / 8.0), FL2FXCONST_SGL( 0.98496019742444f / 8.0) },
- { FL2FXCONST_SGL(-0.79598702973261f / 8.0), FL2FXCONST_SGL( 0.97138411318894f / 8.0) },
- { FL2FXCONST_SGL(-0.99264708948101f / 8.0), FL2FXCONST_SGL(-0.99542822402536f / 8.0) },
- { FL2FXCONST_SGL(-0.99829663752818f / 8.0), FL2FXCONST_SGL( 0.01877138824311f / 8.0) },
- { FL2FXCONST_SGL(-0.70801016548184f / 8.0), FL2FXCONST_SGL( 0.33680685948117f / 8.0) },
- { FL2FXCONST_SGL(-0.70467057786826f / 8.0), FL2FXCONST_SGL( 0.93272777501857f / 8.0) },
- { FL2FXCONST_SGL( 0.99846021905254f / 8.0), FL2FXCONST_SGL(-0.98725746254433f / 8.0) },
- { FL2FXCONST_SGL(-0.63364968534650f / 8.0), FL2FXCONST_SGL(-0.16473594423746f / 8.0) },
- { FL2FXCONST_SGL(-0.16258217500792f / 8.0), FL2FXCONST_SGL(-0.95939125400802f / 8.0) },
- { FL2FXCONST_SGL(-0.43645594360633f / 8.0), FL2FXCONST_SGL(-0.94805030113284f / 8.0) },
- { FL2FXCONST_SGL(-0.99848471702976f / 8.0), FL2FXCONST_SGL( 0.96245166923809f / 8.0) },
- { FL2FXCONST_SGL(-0.16796458968998f / 8.0), FL2FXCONST_SGL(-0.98987511890470f / 8.0) },
- { FL2FXCONST_SGL(-0.87979225745213f / 8.0), FL2FXCONST_SGL(-0.71725725041680f / 8.0) },
- { FL2FXCONST_SGL( 0.44183099021786f / 8.0), FL2FXCONST_SGL(-0.93568974498761f / 8.0) },
- { FL2FXCONST_SGL( 0.93310180125532f / 8.0), FL2FXCONST_SGL(-0.99913308068246f / 8.0) },
- { FL2FXCONST_SGL(-0.93941931782002f / 8.0), FL2FXCONST_SGL(-0.56409379640356f / 8.0) },
- { FL2FXCONST_SGL(-0.88590003188677f / 8.0), FL2FXCONST_SGL( 0.47624600491382f / 8.0) },
- { FL2FXCONST_SGL( 0.99971463703691f / 8.0), FL2FXCONST_SGL(-0.83889954253462f / 8.0) },
- { FL2FXCONST_SGL(-0.75376385639978f / 8.0), FL2FXCONST_SGL( 0.00814643438625f / 8.0) },
- { FL2FXCONST_SGL( 0.93887685615875f / 8.0), FL2FXCONST_SGL(-0.11284528204636f / 8.0) },
- { FL2FXCONST_SGL( 0.85126435782309f / 8.0), FL2FXCONST_SGL( 0.52349251543547f / 8.0) },
- { FL2FXCONST_SGL( 0.39701421446381f / 8.0), FL2FXCONST_SGL( 0.81779634174316f / 8.0) },
- { FL2FXCONST_SGL(-0.37024464187437f / 8.0), FL2FXCONST_SGL(-0.87071656222959f / 8.0) },
- { FL2FXCONST_SGL(-0.36024828242896f / 8.0), FL2FXCONST_SGL( 0.34655735648287f / 8.0) },
- { FL2FXCONST_SGL(-0.93388812549209f / 8.0), FL2FXCONST_SGL(-0.84476541096429f / 8.0) },
- { FL2FXCONST_SGL(-0.65298804552119f / 8.0), FL2FXCONST_SGL(-0.18439575450921f / 8.0) },
- { FL2FXCONST_SGL( 0.11960319006843f / 8.0), FL2FXCONST_SGL( 0.99899346780168f / 8.0) },
- { FL2FXCONST_SGL( 0.94292565553160f / 8.0), FL2FXCONST_SGL( 0.83163906518293f / 8.0) },
- { FL2FXCONST_SGL( 0.75081145286948f / 8.0), FL2FXCONST_SGL(-0.35533223142265f / 8.0) },
- { FL2FXCONST_SGL( 0.56721979748394f / 8.0), FL2FXCONST_SGL(-0.24076836414499f / 8.0) },
- { FL2FXCONST_SGL( 0.46857766746029f / 8.0), FL2FXCONST_SGL(-0.30140233457198f / 8.0) },
- { FL2FXCONST_SGL( 0.97312313923635f / 8.0), FL2FXCONST_SGL(-0.99548191630031f / 8.0) },
- { FL2FXCONST_SGL(-0.38299976567017f / 8.0), FL2FXCONST_SGL( 0.98516909715427f / 8.0) },
- { FL2FXCONST_SGL( 0.41025800019463f / 8.0), FL2FXCONST_SGL( 0.02116736935734f / 8.0) },
- { FL2FXCONST_SGL( 0.09638062008048f / 8.0), FL2FXCONST_SGL( 0.04411984381457f / 8.0) },
- { FL2FXCONST_SGL(-0.85283249275397f / 8.0), FL2FXCONST_SGL( 0.91475563922421f / 8.0) },
- { FL2FXCONST_SGL( 0.88866808958124f / 8.0), FL2FXCONST_SGL(-0.99735267083226f / 8.0) },
- { FL2FXCONST_SGL(-0.48202429536989f / 8.0), FL2FXCONST_SGL(-0.96805608884164f / 8.0) },
- { FL2FXCONST_SGL( 0.27572582416567f / 8.0), FL2FXCONST_SGL( 0.58634753335832f / 8.0) },
- { FL2FXCONST_SGL(-0.65889129659168f / 8.0), FL2FXCONST_SGL( 0.58835634138583f / 8.0) },
- { FL2FXCONST_SGL( 0.98838086953732f / 8.0), FL2FXCONST_SGL( 0.99994349600236f / 8.0) },
- { FL2FXCONST_SGL(-0.20651349620689f / 8.0), FL2FXCONST_SGL( 0.54593044066355f / 8.0) },
- { FL2FXCONST_SGL(-0.62126416356920f / 8.0), FL2FXCONST_SGL(-0.59893681700392f / 8.0) },
- { FL2FXCONST_SGL( 0.20320105410437f / 8.0), FL2FXCONST_SGL(-0.86879180355289f / 8.0) },
- { FL2FXCONST_SGL(-0.97790548600584f / 8.0), FL2FXCONST_SGL( 0.96290806999242f / 8.0) },
- { FL2FXCONST_SGL( 0.11112534735126f / 8.0), FL2FXCONST_SGL( 0.21484763313301f / 8.0) },
- { FL2FXCONST_SGL(-0.41368337314182f / 8.0), FL2FXCONST_SGL( 0.28216837680365f / 8.0) },
- { FL2FXCONST_SGL( 0.24133038992960f / 8.0), FL2FXCONST_SGL( 0.51294362630238f / 8.0) },
- { FL2FXCONST_SGL(-0.66393410674885f / 8.0), FL2FXCONST_SGL(-0.08249679629081f / 8.0) },
- { FL2FXCONST_SGL(-0.53697829178752f / 8.0), FL2FXCONST_SGL(-0.97649903936228f / 8.0) },
- { FL2FXCONST_SGL(-0.97224737889348f / 8.0), FL2FXCONST_SGL( 0.22081333579837f / 8.0) },
- { FL2FXCONST_SGL( 0.87392477144549f / 8.0), FL2FXCONST_SGL(-0.12796173740361f / 8.0) },
- { FL2FXCONST_SGL( 0.19050361015753f / 8.0), FL2FXCONST_SGL( 0.01602615387195f / 8.0) },
- { FL2FXCONST_SGL(-0.46353441212724f / 8.0), FL2FXCONST_SGL(-0.95249041539006f / 8.0) },
- { FL2FXCONST_SGL(-0.07064096339021f / 8.0), FL2FXCONST_SGL(-0.94479803205886f / 8.0) },
- { FL2FXCONST_SGL(-0.92444085484466f / 8.0), FL2FXCONST_SGL(-0.10457590187436f / 8.0) },
- { FL2FXCONST_SGL(-0.83822593578728f / 8.0), FL2FXCONST_SGL(-0.01695043208885f / 8.0) },
- { FL2FXCONST_SGL( 0.75214681811150f / 8.0), FL2FXCONST_SGL(-0.99955681042665f / 8.0) },
- { FL2FXCONST_SGL(-0.42102998829339f / 8.0), FL2FXCONST_SGL( 0.99720941999394f / 8.0) },
- { FL2FXCONST_SGL(-0.72094786237696f / 8.0), FL2FXCONST_SGL(-0.35008961934255f / 8.0) },
- { FL2FXCONST_SGL( 0.78843311019251f / 8.0), FL2FXCONST_SGL( 0.52851398958271f / 8.0) },
- { FL2FXCONST_SGL( 0.97394027897442f / 8.0), FL2FXCONST_SGL(-0.26695944086561f / 8.0) },
- { FL2FXCONST_SGL( 0.99206463477946f / 8.0), FL2FXCONST_SGL(-0.57010120849429f / 8.0) },
- { FL2FXCONST_SGL( 0.76789609461795f / 8.0), FL2FXCONST_SGL(-0.76519356730966f / 8.0) },
- { FL2FXCONST_SGL(-0.82002421836409f / 8.0), FL2FXCONST_SGL(-0.73530179553767f / 8.0) },
- { FL2FXCONST_SGL( 0.81924990025724f / 8.0), FL2FXCONST_SGL( 0.99698425250579f / 8.0) },
- { FL2FXCONST_SGL(-0.26719850873357f / 8.0), FL2FXCONST_SGL( 0.68903369776193f / 8.0) },
- { FL2FXCONST_SGL(-0.43311260380975f / 8.0), FL2FXCONST_SGL( 0.85321815947490f / 8.0) },
- { FL2FXCONST_SGL( 0.99194979673836f / 8.0), FL2FXCONST_SGL( 0.91876249766422f / 8.0) },
- { FL2FXCONST_SGL(-0.80692001248487f / 8.0), FL2FXCONST_SGL(-0.32627540663214f / 8.0) },
- { FL2FXCONST_SGL( 0.43080003649976f / 8.0), FL2FXCONST_SGL(-0.21919095636638f / 8.0) },
- { FL2FXCONST_SGL( 0.67709491937357f / 8.0), FL2FXCONST_SGL(-0.95478075822906f / 8.0) },
- { FL2FXCONST_SGL( 0.56151770568316f / 8.0), FL2FXCONST_SGL(-0.70693811747778f / 8.0) },
- { FL2FXCONST_SGL( 0.10831862810749f / 8.0), FL2FXCONST_SGL(-0.08628837174592f / 8.0) },
- { FL2FXCONST_SGL( 0.91229417540436f / 8.0), FL2FXCONST_SGL(-0.65987351408410f / 8.0) },
- { FL2FXCONST_SGL(-0.48972893932274f / 8.0), FL2FXCONST_SGL( 0.56289246362686f / 8.0) },
- { FL2FXCONST_SGL(-0.89033658689697f / 8.0), FL2FXCONST_SGL(-0.71656563987082f / 8.0) },
- { FL2FXCONST_SGL( 0.65269447475094f / 8.0), FL2FXCONST_SGL( 0.65916004833932f / 8.0) },
- { FL2FXCONST_SGL( 0.67439478141121f / 8.0), FL2FXCONST_SGL(-0.81684380846796f / 8.0) },
- { FL2FXCONST_SGL(-0.47770832416973f / 8.0), FL2FXCONST_SGL(-0.16789556203025f / 8.0) },
- { FL2FXCONST_SGL(-0.99715979260878f / 8.0), FL2FXCONST_SGL(-0.93565784007648f / 8.0) },
- { FL2FXCONST_SGL(-0.90889593602546f / 8.0), FL2FXCONST_SGL( 0.62034397054380f / 8.0) },
- { FL2FXCONST_SGL(-0.06618622548177f / 8.0), FL2FXCONST_SGL(-0.23812217221359f / 8.0) },
- { FL2FXCONST_SGL( 0.99430266919728f / 8.0), FL2FXCONST_SGL( 0.18812555317553f / 8.0) },
- { FL2FXCONST_SGL( 0.97686402381843f / 8.0), FL2FXCONST_SGL(-0.28664534366620f / 8.0) },
- { FL2FXCONST_SGL( 0.94813650221268f / 8.0), FL2FXCONST_SGL(-0.97506640027128f / 8.0) },
- { FL2FXCONST_SGL(-0.95434497492853f / 8.0), FL2FXCONST_SGL(-0.79607978501983f / 8.0) },
- { FL2FXCONST_SGL(-0.49104783137150f / 8.0), FL2FXCONST_SGL( 0.32895214359663f / 8.0) },
- { FL2FXCONST_SGL( 0.99881175120751f / 8.0), FL2FXCONST_SGL( 0.88993983831354f / 8.0) },
- { FL2FXCONST_SGL( 0.50449166760303f / 8.0), FL2FXCONST_SGL(-0.85995072408434f / 8.0) },
- { FL2FXCONST_SGL( 0.47162891065108f / 8.0), FL2FXCONST_SGL(-0.18680204049569f / 8.0) },
- { FL2FXCONST_SGL(-0.62081581361840f / 8.0), FL2FXCONST_SGL( 0.75000676218956f / 8.0) },
- { FL2FXCONST_SGL(-0.43867015250812f / 8.0), FL2FXCONST_SGL( 0.99998069244322f / 8.0) },
- { FL2FXCONST_SGL( 0.98630563232075f / 8.0), FL2FXCONST_SGL(-0.53578899600662f / 8.0) },
- { FL2FXCONST_SGL(-0.61510362277374f / 8.0), FL2FXCONST_SGL(-0.89515019899997f / 8.0) },
- { FL2FXCONST_SGL(-0.03841517601843f / 8.0), FL2FXCONST_SGL(-0.69888815681179f / 8.0) },
- { FL2FXCONST_SGL(-0.30102157304644f / 8.0), FL2FXCONST_SGL(-0.07667808922205f / 8.0) },
- { FL2FXCONST_SGL( 0.41881284182683f / 8.0), FL2FXCONST_SGL( 0.02188098922282f / 8.0) },
- { FL2FXCONST_SGL(-0.86135454941237f / 8.0), FL2FXCONST_SGL( 0.98947480909359f / 8.0) },
- { FL2FXCONST_SGL( 0.67226861393788f / 8.0), FL2FXCONST_SGL(-0.13494389011014f / 8.0) },
- { FL2FXCONST_SGL(-0.70737398842068f / 8.0), FL2FXCONST_SGL(-0.76547349325992f / 8.0) },
- { FL2FXCONST_SGL( 0.94044946687963f / 8.0), FL2FXCONST_SGL( 0.09026201157416f / 8.0) },
- { FL2FXCONST_SGL(-0.82386352534327f / 8.0), FL2FXCONST_SGL( 0.08924768823676f / 8.0) },
- { FL2FXCONST_SGL(-0.32070666698656f / 8.0), FL2FXCONST_SGL( 0.50143421908753f / 8.0) },
- { FL2FXCONST_SGL( 0.57593163224487f / 8.0), FL2FXCONST_SGL(-0.98966422921509f / 8.0) },
- { FL2FXCONST_SGL(-0.36326018419965f / 8.0), FL2FXCONST_SGL( 0.07440243123228f / 8.0) },
- { FL2FXCONST_SGL( 0.99979044674350f / 8.0), FL2FXCONST_SGL(-0.14130287347405f / 8.0) },
- { FL2FXCONST_SGL(-0.92366023326932f / 8.0), FL2FXCONST_SGL(-0.97979298068180f / 8.0) },
- { FL2FXCONST_SGL(-0.44607178518598f / 8.0), FL2FXCONST_SGL(-0.54233252016394f / 8.0) },
- { FL2FXCONST_SGL( 0.44226800932956f / 8.0), FL2FXCONST_SGL( 0.71326756742752f / 8.0) },
- { FL2FXCONST_SGL( 0.03671907158312f / 8.0), FL2FXCONST_SGL( 0.63606389366675f / 8.0) },
- { FL2FXCONST_SGL( 0.52175424682195f / 8.0), FL2FXCONST_SGL(-0.85396826735705f / 8.0) },
- { FL2FXCONST_SGL(-0.94701139690956f / 8.0), FL2FXCONST_SGL(-0.01826348194255f / 8.0) },
- { FL2FXCONST_SGL(-0.98759606946049f / 8.0), FL2FXCONST_SGL( 0.82288714303073f / 8.0) },
- { FL2FXCONST_SGL( 0.87434794743625f / 8.0), FL2FXCONST_SGL( 0.89399495655433f / 8.0) },
- { FL2FXCONST_SGL(-0.93412041758744f / 8.0), FL2FXCONST_SGL( 0.41374052024363f / 8.0) },
- { FL2FXCONST_SGL( 0.96063943315511f / 8.0), FL2FXCONST_SGL( 0.93116709541280f / 8.0) },
- { FL2FXCONST_SGL( 0.97534253457837f / 8.0), FL2FXCONST_SGL( 0.86150930812689f / 8.0) },
- { FL2FXCONST_SGL( 0.99642466504163f / 8.0), FL2FXCONST_SGL( 0.70190043427512f / 8.0) },
- { FL2FXCONST_SGL(-0.94705089665984f / 8.0), FL2FXCONST_SGL(-0.29580042814306f / 8.0) },
- { FL2FXCONST_SGL( 0.91599807087376f / 8.0), FL2FXCONST_SGL(-0.98147830385781f / 8.0) }
-};
-//@}
-
-/*
-static const FIXP_SGL harmonicPhase [2][4] = {
- { 1.0, 0.0, -1.0, 0.0},
- { 0.0, 1.0, 0.0, -1.0}
-};
-*/
-
-
-/* The CLDFB-80 is not linear phase (unsymmetric), but the exact
- phase difference between adjacent bands, at exact positions
- (in this case exactly in the frequency band centre), can of
- course be determined anyway. While the standard symmetric QMF
- bank has a phase difference of 0.5*pi, the CLDFB-80
- bank has the difference 0.2337*pi. */
-const FIXP_SGL harmonicPhaseX [2][4] = {
- { FL2FXCONST_SGL( 7.423735494778151e-001), FL2FXCONST_SGL(-6.699862036159475e-001),
- FL2FXCONST_SGL(-7.423735494778152e-001), FL2FXCONST_SGL( 6.699862036159474e-001) },
- { FL2FXCONST_SGL( 7.423735494778151e-001), FL2FXCONST_SGL( 6.699862036159476e-001),
- FL2FXCONST_SGL(-7.423735494778151e-001), FL2FXCONST_SGL(-6.699862036159476e-001) }
-};
-
-/* tables for SBR and AAC LD */
-/* table for 8 time slot index */
-const int FDK_sbrDecoder_envelopeTable_8 [8][5] = {
-/* transientIndex nEnv, tranIdx, shortEnv, border1, border2, ... */
-/* borders from left to right side; -1 = not in use */
- /*[|T-|------]*/ { 2, 0, 0, 1, -1 },
- /*[|-T-|-----]*/ { 2, 0, 0, 2, -1 },
- /*[--|T-|----]*/ { 3, 1, 1, 2, 4 },
- /*[---|T-|---]*/ { 3, 1, 1, 3, 5 },
- /*[----|T-|--]*/ { 3, 1, 1, 4, 6 },
- /*[-----|T--|]*/ { 2, 1, 1, 5, -1 },
- /*[------|T-|]*/ { 2, 1, 1, 6, -1 },
- /*[-------|T|]*/ { 2, 1, 1, 7, -1 },
-};
-
-/* table for 15 time slot index */
-const int FDK_sbrDecoder_envelopeTable_15 [15][6] = {
- /* transientIndex nEnv, tranIdx, shortEnv, border1, border2, ... */
- /* length from left to right side; -1 = not in use */
- /*[|T---|------------]*/ { 2, 0, 0, 4, -1, -1},
- /*[|-T---|-----------]*/ { 2, 0, 0, 5, -1, -1},
- /*[|--|T---|---------]*/ { 3, 1, 1, 2, 6, -1},
- /*[|---|T---|--------]*/ { 3, 1, 1, 3, 7, -1},
- /*[|----|T---|-------]*/ { 3, 1, 1, 4, 8, -1},
- /*[|-----|T---|------]*/ { 3, 1, 1, 5, 9, -1},
- /*[|------|T---|-----]*/ { 3, 1, 1, 6, 10, -1},
- /*[|-------|T---|----]*/ { 3, 1, 1, 7, 11, -1},
- /*[|--------|T---|---]*/ { 3, 1, 1, 8, 12, -1},
- /*[|---------|T---|--]*/ { 3, 1, 1, 9, 13, -1},
- /*[|----------|T----|]*/ { 2, 1, 1,10, -1, -1},
- /*[|-----------|T---|]*/ { 2, 1, 1,11, -1, -1},
- /*[|------------|T--|]*/ { 2, 1, 1,12, -1, -1},
- /*[|-------------|T-|]*/ { 2, 1, 1,13, -1, -1},
- /*[|--------------|T|]*/ { 2, 1, 1,14, -1, -1},
-};
-
-/* table for 16 time slot index */
-const int FDK_sbrDecoder_envelopeTable_16 [16][6] = {
- /* transientIndex nEnv, tranIdx, shortEnv, border1, border2, ... */
- /* length from left to right side; -1 = not in use */
- /*[|T---|------------|]*/ { 2, 0, 0, 4, -1, -1},
- /*[|-T---|-----------|]*/ { 2, 0, 0, 5, -1, -1},
- /*[|--|T---|----------]*/ { 3, 1, 1, 2, 6, -1},
- /*[|---|T---|---------]*/ { 3, 1, 1, 3, 7, -1},
- /*[|----|T---|--------]*/ { 3, 1, 1, 4, 8, -1},
- /*[|-----|T---|-------]*/ { 3, 1, 1, 5, 9, -1},
- /*[|------|T---|------]*/ { 3, 1, 1, 6, 10, -1},
- /*[|-------|T---|-----]*/ { 3, 1, 1, 7, 11, -1},
- /*[|--------|T---|----]*/ { 3, 1, 1, 8, 12, -1},
- /*[|---------|T---|---]*/ { 3, 1, 1, 9, 13, -1},
- /*[|----------|T---|--]*/ { 3, 1, 1,10, 14, -1},
- /*[|-----------|T----|]*/ { 2, 1, 1,11, -1, -1},
- /*[|------------|T---|]*/ { 2, 1, 1,12, -1, -1},
- /*[|-------------|T--|]*/ { 2, 1, 1,13, -1, -1},
- /*[|--------------|T-|]*/ { 2, 1, 1,14, -1, -1},
- /*[|---------------|T|]*/ { 2, 1, 1,15, -1, -1},
-};
-
-/*!
- \name FrameInfoDefaults
-
- Predefined envelope positions for the FIX-FIX case (static framing)
-*/
-//@{
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_15 = { 0, 1, {0, 15, 0, 0, 0, 0}, {1, 0, 0, 0, 0}, -1, 1, {0, 15, 0} };
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_15 = { 0, 2, {0, 8, 15, 0, 0, 0}, {1, 1, 0, 0, 0}, -1, 2, {0, 8, 15} };
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_15 = { 0, 4, {0, 4, 8, 12, 15, 0}, {1, 1, 1, 1, 0}, -1, 2, {0, 8, 15} };
-#if (MAX_ENVELOPES >= 8)
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_15 = { 0, 8, {0, 2, 4, 6, 8, 10, 12, 14, 15}, {1, 1, 1, 1, 1, 1, 1, 1}, -1, 2, {0, 8, 15} };
-#endif
-
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_16 = { 0, 1, {0, 16, 0, 0, 0, 0}, {1, 0, 0, 0, 0}, -1, 1, {0, 16, 0} };
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_16 = { 0, 2, {0, 8, 16, 0, 0, 0}, {1, 1, 0, 0, 0}, -1, 2, {0, 8, 16} };
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_16 = { 0, 4, {0, 4, 8, 12, 16, 0}, {1, 1, 1, 1, 0}, -1, 2, {0, 8, 16} };
-
-#if (MAX_ENVELOPES >= 8)
-const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_16 = { 0, 8, {0, 2, 4, 6, 8, 10, 12, 14, 16}, {1, 1, 1, 1, 1, 1, 1, 1}, -1, 2, {0, 8, 16} };
-#endif
-
-
-//@}
-
-/*!
- \name SBR_HuffmanTables
-
- SBR Huffman Table Overview: \n
- \n
- o envelope level, 1.5 dB: \n
- 1) sbr_huffBook_EnvLevel10T[120][2] \n
- 2) sbr_huffBook_EnvLevel10F[120][2] \n
- \n
- o envelope balance, 1.5 dB: \n
- 3) sbr_huffBook_EnvBalance10T[48][2] \n
- 4) sbr_huffBook_EnvBalance10F[48][2] \n
- \n
- o envelope level, 3.0 dB: \n
- 5) sbr_huffBook_EnvLevel11T[62][2] \n
- 6) sbr_huffBook_EnvLevel11F[62][2] \n
- \n
- o envelope balance, 3.0 dB: \n
- 7) sbr_huffBook_EnvBalance11T[24][2] \n
- 8) sbr_huffBook_EnvBalance11F[24][2] \n
- \n
- o noise level, 3.0 dB: \n
- 9) sbr_huffBook_NoiseLevel11T[62][2] \n
- -) (sbr_huffBook_EnvLevel11F[62][2] is used for freq dir)\n
- \n
- o noise balance, 3.0 dB: \n
- 10) sbr_huffBook_NoiseBalance11T[24][2]\n
- -) (sbr_huffBook_EnvBalance11F[24][2] is used for freq dir)\n
- \n
- (1.5 dB is never used for noise)
-
-*/
-//@{
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10T[120][2] = {
- { 1, 2 }, { -64, -65 }, { 3, 4 }, { -63, -66 },
- { 5, 6 }, { -62, -67 }, { 7, 8 }, { -61, -68 },
- { 9, 10 }, { -60, -69 }, { 11, 12 }, { -59, -70 },
- { 13, 14 }, { -58, -71 }, { 15, 16 }, { -57, -72 },
- { 17, 18 }, { -73, -56 }, { 19, 21 }, { -74, 20 },
- { -55, -75 }, { 22, 26 }, { 23, 24 }, { -54, -76 },
- { -77, 25 }, { -53, -78 }, { 27, 34 }, { 28, 29 },
- { -52, -79 }, { 30, 31 }, { -80, -51 }, { 32, 33 },
- { -83, -82 }, { -81, -50 }, { 35, 57 }, { 36, 40 },
- { 37, 38 }, { -88, -84 }, { -48, 39 }, { -90, -85 },
- { 41, 46 }, { 42, 43 }, { -49, -87 }, { 44, 45 },
- { -89, -86 }, {-124,-123 }, { 47, 50 }, { 48, 49 },
- {-122,-121 }, {-120,-119 }, { 51, 54 }, { 52, 53 },
- {-118,-117 }, {-116,-115 }, { 55, 56 }, {-114,-113 },
- {-112,-111 }, { 58, 89 }, { 59, 74 }, { 60, 67 },
- { 61, 64 }, { 62, 63 }, {-110,-109 }, {-108,-107 },
- { 65, 66 }, {-106,-105 }, {-104,-103 }, { 68, 71 },
- { 69, 70 }, {-102,-101 }, {-100, -99 }, { 72, 73 },
- { -98, -97 }, { -96, -95 }, { 75, 82 }, { 76, 79 },
- { 77, 78 }, { -94, -93 }, { -92, -91 }, { 80, 81 },
- { -47, -46 }, { -45, -44 }, { 83, 86 }, { 84, 85 },
- { -43, -42 }, { -41, -40 }, { 87, 88 }, { -39, -38 },
- { -37, -36 }, { 90, 105 }, { 91, 98 }, { 92, 95 },
- { 93, 94 }, { -35, -34 }, { -33, -32 }, { 96, 97 },
- { -31, -30 }, { -29, -28 }, { 99, 102 }, { 100, 101 },
- { -27, -26 }, { -25, -24 }, { 103, 104 }, { -23, -22 },
- { -21, -20 }, { 106, 113 }, { 107, 110 }, { 108, 109 },
- { -19, -18 }, { -17, -16 }, { 111, 112 }, { -15, -14 },
- { -13, -12 }, { 114, 117 }, { 115, 116 }, { -11, -10 },
- { -9, -8 }, { 118, 119 }, { -7, -6 }, { -5, -4 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10F[120][2] = {
- { 1, 2 }, { -64, -65 }, { 3, 4 }, { -63, -66 },
- { 5, 6 }, { -67, -62 }, { 7, 8 }, { -68, -61 },
- { 9, 10 }, { -69, -60 }, { 11, 13 }, { -70, 12 },
- { -59, -71 }, { 14, 16 }, { -58, 15 }, { -72, -57 },
- { 17, 19 }, { -73, 18 }, { -56, -74 }, { 20, 23 },
- { 21, 22 }, { -55, -75 }, { -54, -53 }, { 24, 27 },
- { 25, 26 }, { -76, -52 }, { -77, -51 }, { 28, 31 },
- { 29, 30 }, { -50, -78 }, { -79, -49 }, { 32, 36 },
- { 33, 34 }, { -48, -47 }, { -80, 35 }, { -81, -82 },
- { 37, 47 }, { 38, 41 }, { 39, 40 }, { -83, -46 },
- { -45, -84 }, { 42, 44 }, { -85, 43 }, { -44, -43 },
- { 45, 46 }, { -88, -87 }, { -86, -90 }, { 48, 66 },
- { 49, 56 }, { 50, 53 }, { 51, 52 }, { -92, -42 },
- { -41, -39 }, { 54, 55 }, {-105, -89 }, { -38, -37 },
- { 57, 60 }, { 58, 59 }, { -94, -91 }, { -40, -36 },
- { 61, 63 }, { -20, 62 }, {-115,-110 }, { 64, 65 },
- {-108,-107 }, {-101, -97 }, { 67, 89 }, { 68, 75 },
- { 69, 72 }, { 70, 71 }, { -95, -93 }, { -34, -27 },
- { 73, 74 }, { -22, -17 }, { -16,-124 }, { 76, 82 },
- { 77, 79 }, {-123, 78 }, {-122,-121 }, { 80, 81 },
- {-120,-119 }, {-118,-117 }, { 83, 86 }, { 84, 85 },
- {-116,-114 }, {-113,-112 }, { 87, 88 }, {-111,-109 },
- {-106,-104 }, { 90, 105 }, { 91, 98 }, { 92, 95 },
- { 93, 94 }, {-103,-102 }, {-100, -99 }, { 96, 97 },
- { -98, -96 }, { -35, -33 }, { 99, 102 }, { 100, 101 },
- { -32, -31 }, { -30, -29 }, { 103, 104 }, { -28, -26 },
- { -25, -24 }, { 106, 113 }, { 107, 110 }, { 108, 109 },
- { -23, -21 }, { -19, -18 }, { 111, 112 }, { -15, -14 },
- { -13, -12 }, { 114, 117 }, { 115, 116 }, { -11, -10 },
- { -9, -8 }, { 118, 119 }, { -7, -6 }, { -5, -4 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10T[48][2] = {
- { -64, 1 }, { -63, 2 }, { -65, 3 }, { -62, 4 },
- { -66, 5 }, { -61, 6 }, { -67, 7 }, { -60, 8 },
- { -68, 9 }, { 10, 11 }, { -69, -59 }, { 12, 13 },
- { -70, -58 }, { 14, 28 }, { 15, 21 }, { 16, 18 },
- { -57, 17 }, { -71, -56 }, { 19, 20 }, { -88, -87 },
- { -86, -85 }, { 22, 25 }, { 23, 24 }, { -84, -83 },
- { -82, -81 }, { 26, 27 }, { -80, -79 }, { -78, -77 },
- { 29, 36 }, { 30, 33 }, { 31, 32 }, { -76, -75 },
- { -74, -73 }, { 34, 35 }, { -72, -55 }, { -54, -53 },
- { 37, 41 }, { 38, 39 }, { -52, -51 }, { -50, 40 },
- { -49, -48 }, { 42, 45 }, { 43, 44 }, { -47, -46 },
- { -45, -44 }, { 46, 47 }, { -43, -42 }, { -41, -40 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10F[48][2] = {
- { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 },
- { -62, 5 }, { -61, 6 }, { -67, 7 }, { -68, 8 },
- { -60, 9 }, { 10, 11 }, { -69, -59 }, { -70, 12 },
- { -58, 13 }, { 14, 17 }, { -71, 15 }, { -57, 16 },
- { -56, -73 }, { 18, 32 }, { 19, 25 }, { 20, 22 },
- { -72, 21 }, { -88, -87 }, { 23, 24 }, { -86, -85 },
- { -84, -83 }, { 26, 29 }, { 27, 28 }, { -82, -81 },
- { -80, -79 }, { 30, 31 }, { -78, -77 }, { -76, -75 },
- { 33, 40 }, { 34, 37 }, { 35, 36 }, { -74, -55 },
- { -54, -53 }, { 38, 39 }, { -52, -51 }, { -50, -49 },
- { 41, 44 }, { 42, 43 }, { -48, -47 }, { -46, -45 },
- { 45, 46 }, { -44, -43 }, { -42, 47 }, { -41, -40 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11T[62][2] = {
- { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 },
- { -62, 5 }, { -67, 6 }, { -61, 7 }, { -68, 8 },
- { -60, 9 }, { 10, 11 }, { -69, -59 }, { 12, 14 },
- { -70, 13 }, { -71, -58 }, { 15, 18 }, { 16, 17 },
- { -72, -57 }, { -73, -74 }, { 19, 22 }, { -56, 20 },
- { -55, 21 }, { -54, -77 }, { 23, 31 }, { 24, 25 },
- { -75, -76 }, { 26, 27 }, { -78, -53 }, { 28, 29 },
- { -52, -95 }, { -94, 30 }, { -93, -92 }, { 32, 47 },
- { 33, 40 }, { 34, 37 }, { 35, 36 }, { -91, -90 },
- { -89, -88 }, { 38, 39 }, { -87, -86 }, { -85, -84 },
- { 41, 44 }, { 42, 43 }, { -83, -82 }, { -81, -80 },
- { 45, 46 }, { -79, -51 }, { -50, -49 }, { 48, 55 },
- { 49, 52 }, { 50, 51 }, { -48, -47 }, { -46, -45 },
- { 53, 54 }, { -44, -43 }, { -42, -41 }, { 56, 59 },
- { 57, 58 }, { -40, -39 }, { -38, -37 }, { 60, 61 },
- { -36, -35 }, { -34, -33 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11F[62][2] = {
- { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 },
- { -62, 5 }, { -67, 6 }, { 7, 8 }, { -61, -68 },
- { 9, 10 }, { -60, -69 }, { 11, 12 }, { -59, -70 },
- { 13, 14 }, { -58, -71 }, { 15, 16 }, { -57, -72 },
- { 17, 19 }, { -56, 18 }, { -55, -73 }, { 20, 24 },
- { 21, 22 }, { -74, -54 }, { -53, 23 }, { -75, -76 },
- { 25, 30 }, { 26, 27 }, { -52, -51 }, { 28, 29 },
- { -77, -79 }, { -50, -49 }, { 31, 39 }, { 32, 35 },
- { 33, 34 }, { -78, -46 }, { -82, -88 }, { 36, 37 },
- { -83, -48 }, { -47, 38 }, { -86, -85 }, { 40, 47 },
- { 41, 44 }, { 42, 43 }, { -80, -44 }, { -43, -42 },
- { 45, 46 }, { -39, -87 }, { -84, -40 }, { 48, 55 },
- { 49, 52 }, { 50, 51 }, { -95, -94 }, { -93, -92 },
- { 53, 54 }, { -91, -90 }, { -89, -81 }, { 56, 59 },
- { 57, 58 }, { -45, -41 }, { -38, -37 }, { 60, 61 },
- { -36, -35 }, { -34, -33 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11T[24][2] = {
- { -64, 1 }, { -63, 2 }, { -65, 3 }, { -66, 4 },
- { -62, 5 }, { -61, 6 }, { -67, 7 }, { -68, 8 },
- { -60, 9 }, { 10, 16 }, { 11, 13 }, { -69, 12 },
- { -76, -75 }, { 14, 15 }, { -74, -73 }, { -72, -71 },
- { 17, 20 }, { 18, 19 }, { -70, -59 }, { -58, -57 },
- { 21, 22 }, { -56, -55 }, { -54, 23 }, { -53, -52 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11F[24][2] = {
- { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 },
- { -62, 5 }, { -61, 6 }, { -67, 7 }, { -68, 8 },
- { -60, 9 }, { 10, 13 }, { -69, 11 }, { -59, 12 },
- { -58, -76 }, { 14, 17 }, { 15, 16 }, { -75, -74 },
- { -73, -72 }, { 18, 21 }, { 19, 20 }, { -71, -70 },
- { -57, -56 }, { 22, 23 }, { -55, -54 }, { -53, -52 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseLevel11T[62][2] = {
- { -64, 1 }, { -63, 2 }, { -65, 3 }, { -66, 4 },
- { -62, 5 }, { -67, 6 }, { 7, 8 }, { -61, -68 },
- { 9, 30 }, { 10, 15 }, { -60, 11 }, { -69, 12 },
- { 13, 14 }, { -59, -53 }, { -95, -94 }, { 16, 23 },
- { 17, 20 }, { 18, 19 }, { -93, -92 }, { -91, -90 },
- { 21, 22 }, { -89, -88 }, { -87, -86 }, { 24, 27 },
- { 25, 26 }, { -85, -84 }, { -83, -82 }, { 28, 29 },
- { -81, -80 }, { -79, -78 }, { 31, 46 }, { 32, 39 },
- { 33, 36 }, { 34, 35 }, { -77, -76 }, { -75, -74 },
- { 37, 38 }, { -73, -72 }, { -71, -70 }, { 40, 43 },
- { 41, 42 }, { -58, -57 }, { -56, -55 }, { 44, 45 },
- { -54, -52 }, { -51, -50 }, { 47, 54 }, { 48, 51 },
- { 49, 50 }, { -49, -48 }, { -47, -46 }, { 52, 53 },
- { -45, -44 }, { -43, -42 }, { 55, 58 }, { 56, 57 },
- { -41, -40 }, { -39, -38 }, { 59, 60 }, { -37, -36 },
- { -35, 61 }, { -34, -33 }
-};
-
-const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseBalance11T[24][2] = {
- { -64, 1 }, { -65, 2 }, { -63, 3 }, { 4, 9 },
- { -66, 5 }, { -62, 6 }, { 7, 8 }, { -76, -75 },
- { -74, -73 }, { 10, 17 }, { 11, 14 }, { 12, 13 },
- { -72, -71 }, { -70, -69 }, { 15, 16 }, { -68, -67 },
- { -61, -60 }, { 18, 21 }, { 19, 20 }, { -59, -58 },
- { -57, -56 }, { 22, 23 }, { -55, -54 }, { -53, -52 }
-};
-//@}
-
-
-
-
-/*!
- \name parametric stereo
- \brief constants used by the parametric stereo part of the decoder
-
-*/
-
-
-/* constants used in psbitdec.cpp */
-
-/* FIX_BORDER can have 0, 1, 2, 4 envelopes */
-const UCHAR FDK_sbrDecoder_aFixNoEnvDecode[4] = {0, 1, 2, 4};
-
-
-/* IID & ICC Huffman codebooks */
-const SCHAR aBookPsIidTimeDecode[28][2] = {
- { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 },
- { -62, 5 }, { -67, 6 }, { -61, 7 }, { -68, 8 },
- { -60, 9 }, { -69, 10 }, { -59, 11 }, { -70, 12 },
- { -58, 13 }, { -57, 14 }, { -71, 15 }, { 16, 17 },
- { -56, -72 }, { 18, 21 }, { 19, 20 }, { -55, -78 },
- { -77, -76 }, { 22, 25 }, { 23, 24 }, { -75, -74 },
- { -73, -54 }, { 26, 27 }, { -53, -52 }, { -51, -50 }
-};
-
-const SCHAR aBookPsIidFreqDecode[28][2] = {
- { -64, 1 }, { 2, 3 }, { -63, -65 }, { 4, 5 },
- { -62, -66 }, { 6, 7 }, { -61, -67 }, { 8, 9 },
- { -68, -60 }, { -59, 10 }, { -69, 11 }, { -58, 12 },
- { -70, 13 }, { -71, 14 }, { -57, 15 }, { 16, 17 },
- { -56, -72 }, { 18, 19 }, { -55, -54 }, { 20, 21 },
- { -73, -53 }, { 22, 24 }, { -74, 23 }, { -75, -78 },
- { 25, 26 }, { -77, -76 }, { -52, 27 }, { -51, -50 }
-};
-
-const SCHAR aBookPsIccTimeDecode[14][2] = {
- { -64, 1 }, { -63, 2 }, { -65, 3 }, { -62, 4 },
- { -66, 5 }, { -61, 6 }, { -67, 7 }, { -60, 8 },
- { -68, 9 }, { -59, 10 }, { -69, 11 }, { -58, 12 },
- { -70, 13 }, { -71, -57 }
-};
-
-const SCHAR aBookPsIccFreqDecode[14][2] = {
- { -64, 1 }, { -63, 2 }, { -65, 3 }, { -62, 4 },
- { -66, 5 }, { -61, 6 }, { -67, 7 }, { -60, 8 },
- { -59, 9 }, { -68, 10 }, { -58, 11 }, { -69, 12 },
- { -57, 13 }, { -70, -71 }
-};
-
-/* IID-fine Huffman codebooks */
-
-const SCHAR aBookPsIidFineTimeDecode[60][2] = {
- { 1, -64 }, { -63, 2 }, { 3, -65 }, { 4, 59 },
- { 5, 7 }, { 6, -67 }, { -68, -60 }, { -61, 8 },
- { 9, 11 }, { -59, 10 }, { -70, -58 }, { 12, 41 },
- { 13, 20 }, { 14, -71 }, { -55, 15 }, { -53, 16 },
- { 17, -77 }, { 18, 19 }, { -85, -84 }, { -46, -45 },
- { -57, 21 }, { 22, 40 }, { 23, 29 }, { -51, 24 },
- { 25, 26 }, { -83, -82 }, { 27, 28 }, { -90, -38 },
- { -92, -91 }, { 30, 37 }, { 31, 34 }, { 32, 33 },
- { -35, -34 }, { -37, -36 }, { 35, 36 }, { -94, -93 },
- { -89, -39 }, { 38, -79 }, { 39, -81 }, { -88, -40 },
- { -74, -54 }, { 42, -69 }, { 43, 44 }, { -72, -56 },
- { 45, 52 }, { 46, 50 }, { 47, -76 }, { -49, 48 },
- { -47, 49 }, { -87, -41 }, { -52, 51 }, { -78, -50 },
- { 53, -73 }, { 54, -75 }, { 55, 57 }, { 56, -80 },
- { -86, -42 }, { -48, 58 }, { -44, -43 }, { -66, -62 }
-};
-
-
-const SCHAR aBookPsIidFineFreqDecode[60][2] = {
- { 1, -64 }, { 2, 4 }, { 3, -65 }, { -66, -62 },
- { -63, 5 }, { 6, 7 }, { -67, -61 }, { 8, 9 },
- { -68, -60 }, { 10, 11 }, { -69, -59 }, { 12, 13 },
- { -70, -58 }, { 14, 18 }, { -57, 15 }, { 16, -72 },
- { -54, 17 }, { -75, -53 }, { 19, 37 }, { -56, 20 },
- { 21, -73 }, { 22, 29 }, { 23, -76 }, { 24, -78 },
- { 25, 28 }, { 26, 27 }, { -85, -43 }, { -83, -45 },
- { -81, -47 }, { -52, 30 }, { -50, 31 }, { 32, -79 },
- { 33, 34 }, { -82, -46 }, { 35, 36 }, { -90, -89 },
- { -92, -91 }, { 38, -71 }, { -55, 39 }, { 40, -74 },
- { 41, 50 }, { 42, -77 }, { -49, 43 }, { 44, 47 },
- { 45, 46 }, { -86, -42 }, { -88, -87 }, { 48, 49 },
- { -39, -38 }, { -41, -40 }, { -51, 51 }, { 52, 59 },
- { 53, 56 }, { 54, 55 }, { -35, -34 }, { -37, -36 },
- { 57, 58 }, { -94, -93 }, { -84, -44 }, { -80, -48 }
-};
-
-/* constants used in psdec.cpp */
-
-const FIXP_DBL decayScaleFactTable[64] = {
-
- FL2FXCONST_DBL(1.000000), FL2FXCONST_DBL(1.000000), FL2FXCONST_DBL(1.000000), FL2FXCONST_DBL(1.000000),
- FL2FXCONST_DBL(0.950000), FL2FXCONST_DBL(0.900000), FL2FXCONST_DBL(0.850000), FL2FXCONST_DBL(0.800000),
- FL2FXCONST_DBL(0.750000), FL2FXCONST_DBL(0.700000), FL2FXCONST_DBL(0.650000), FL2FXCONST_DBL(0.600000),
- FL2FXCONST_DBL(0.550000), FL2FXCONST_DBL(0.500000), FL2FXCONST_DBL(0.450000), FL2FXCONST_DBL(0.400000),
- FL2FXCONST_DBL(0.350000), FL2FXCONST_DBL(0.300000), FL2FXCONST_DBL(0.250000), FL2FXCONST_DBL(0.200000),
- FL2FXCONST_DBL(0.150000), FL2FXCONST_DBL(0.100000), FL2FXCONST_DBL(0.050000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000),
- FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000), FL2FXCONST_DBL(0.000000) };
-
-/* the values of the following 3 tables are shiftet right by 1 ! */
-const FIXP_DBL ScaleFactors[NO_IID_LEVELS] = {
-
- 0x5a5ded00, 0x59cd0400, 0x58c29680, 0x564c2e80, 0x52a3d480,
- 0x4c8be080, 0x46df3080, 0x40000000, 0x384ba5c0, 0x304c2980,
- 0x24e9f640, 0x1b4a2940, 0x11b5c0a0, 0x0b4e2540, 0x0514ea90
-};
-
-const FIXP_DBL ScaleFactorsFine[NO_IID_LEVELS_FINE] = {
-
- 0x5a825c00, 0x5a821c00, 0x5a815100, 0x5a7ed000, 0x5a76e600,
- 0x5a5ded00, 0x5a39b880, 0x59f1fd00, 0x5964d680, 0x5852ca00,
- 0x564c2e80, 0x54174480, 0x50ea7500, 0x4c8be080, 0x46df3080,
- 0x40000000, 0x384ba5c0, 0x304c2980, 0x288dd240, 0x217a2900,
- 0x1b4a2940, 0x13c5ece0, 0x0e2b0090, 0x0a178ef0, 0x072ab798,
- 0x0514ea90, 0x02dc5944, 0x019bf87c, 0x00e7b173, 0x00824b8b,
- 0x00494568
-};
-const FIXP_DBL Alphas[NO_ICC_LEVELS] = {
-
- 0x00000000, 0x0b6b5be0, 0x12485f80, 0x1da2fa40,
- 0x2637ebc0, 0x3243f6c0, 0x466b7480, 0x6487ed80
-};
-
-#if defined(ARCH_PREFER_MULT_32x16)
-#define FIXP_PS FIXP_SGL
-#define FXP_CAST(a) FX_DBL2FX_SGL((FIXP_DBL)a)
-#define FL2FXCONST_PS FL2FXCONST_SGL
-#else
-#define FIXP_PS FIXP_DBL
-#define FXP_CAST
-#define FL2FXCONST_PS FL2FXCONST_DBL
-#endif
-
-const FIXP_PS aAllpassLinkDecaySer[NO_SERIAL_ALLPASS_LINKS] = {
-FXP_CAST(0x53625b00), FXP_CAST(0x4848af00), FXP_CAST(0x3ea94d00) };
-
-const FIXP_PS aaFractDelayPhaseFactorReQmf[NO_QMF_CHANNELS] = {
-FXP_CAST(0x68b92180), FXP_CAST(0xde396900), FXP_CAST(0x80650380), FXP_CAST(0xcb537e40), FXP_CAST(0x5beb8f00), FXP_CAST(0x72f29200), FXP_CAST(0xf1f43c50), FXP_CAST(0x83896280),
-FXP_CAST(0xb9b99c00), FXP_CAST(0x4cda8f00), FXP_CAST(0x7a576e00), FXP_CAST(0x060799e0), FXP_CAST(0x89be5280), FXP_CAST(0xa9dab600), FXP_CAST(0x3be51b00), FXP_CAST(0x7eb91900),
-FXP_CAST(0x19f4f540), FXP_CAST(0x92dcb380), FXP_CAST(0x9c1ad700), FXP_CAST(0x29761940), FXP_CAST(0x7ffbf500), FXP_CAST(0x2d3eb180), FXP_CAST(0x9eab0a00), FXP_CAST(0x90d0aa80),
-FXP_CAST(0x1601bcc0), FXP_CAST(0x7e180e80), FXP_CAST(0x3f6b3940), FXP_CAST(0xacdeeb00), FXP_CAST(0x88435b00), FXP_CAST(0x0202a768), FXP_CAST(0x79194f80), FXP_CAST(0x5007fd00),
-FXP_CAST(0xbd1ecf00), FXP_CAST(0x82a8d100), FXP_CAST(0xedf6e5e0), FXP_CAST(0x711f3500), FXP_CAST(0x5eac4480), FXP_CAST(0xcf0447c0), FXP_CAST(0x80245f80), FXP_CAST(0xda5cd4c0),
-FXP_CAST(0x665c0800), FXP_CAST(0x6afbc500), FXP_CAST(0xe21e85e0), FXP_CAST(0x80c5e500), FXP_CAST(0xc7b003c0), FXP_CAST(0x59139f80), FXP_CAST(0x74a8e400), FXP_CAST(0xf5f51f40),
-FXP_CAST(0x84896680), FXP_CAST(0xb6662b00), FXP_CAST(0x4999b600), FXP_CAST(0x7b76a300), FXP_CAST(0x0a0b0650), FXP_CAST(0x8b572b80), FXP_CAST(0xa6ec4580), FXP_CAST(0x384fda80),
-FXP_CAST(0x7f3a1f00), FXP_CAST(0x1de19ec0), FXP_CAST(0x95045000), FXP_CAST(0x99a3e180), FXP_CAST(0x25a30740), FXP_CAST(0x7fdb9e80), FXP_CAST(0x30fbdb00), FXP_CAST(0xa153d500) };
-
-const FIXP_PS aaFractDelayPhaseFactorImQmf[NO_QMF_CHANNELS] = {
-FXP_CAST(0xb6663a80), FXP_CAST(0x84896200), FXP_CAST(0xf5f50c70), FXP_CAST(0x74a8dc80), FXP_CAST(0x5913ad00), FXP_CAST(0xc7b01480), FXP_CAST(0x80c5e300), FXP_CAST(0xe21e73a0),
-FXP_CAST(0x6afbba80), FXP_CAST(0x665c1380), FXP_CAST(0xda5ce6c0), FXP_CAST(0x80246080), FXP_CAST(0xcf043640), FXP_CAST(0x5eac3800), FXP_CAST(0x711f3e00), FXP_CAST(0xedf6f8a0),
-FXP_CAST(0x82a8d500), FXP_CAST(0xbd1ebe80), FXP_CAST(0x5007ee00), FXP_CAST(0x79195580), FXP_CAST(0x0202ba40), FXP_CAST(0x88436180), FXP_CAST(0xacdedc80), FXP_CAST(0x3f6b28c0),
-FXP_CAST(0x7e181180), FXP_CAST(0x1601cf40), FXP_CAST(0x90d0b380), FXP_CAST(0x9eaafd80), FXP_CAST(0x2d3e9fc0), FXP_CAST(0x7ffbf580), FXP_CAST(0x29762b00), FXP_CAST(0x9c1ae280),
-FXP_CAST(0x92dca980), FXP_CAST(0x19f4e2c0), FXP_CAST(0x7eb91680), FXP_CAST(0x3be52b80), FXP_CAST(0xa9dac400), FXP_CAST(0x89be4b80), FXP_CAST(0x06078710), FXP_CAST(0x7a576880),
-FXP_CAST(0x4cda9e00), FXP_CAST(0xb9b9ac00), FXP_CAST(0x83895e00), FXP_CAST(0xf1f42990), FXP_CAST(0x72f28a00), FXP_CAST(0x5beb9c00), FXP_CAST(0xcb538f40), FXP_CAST(0x80650200),
-FXP_CAST(0xde3956c0), FXP_CAST(0x68b91680), FXP_CAST(0x68b92c00), FXP_CAST(0xde397b40), FXP_CAST(0x80650500), FXP_CAST(0xcb536d00), FXP_CAST(0x5beb8180), FXP_CAST(0x72f29a80),
-FXP_CAST(0xf1f44f10), FXP_CAST(0x83896700), FXP_CAST(0xb9b98c80), FXP_CAST(0x4cda8000), FXP_CAST(0x7a577380), FXP_CAST(0x0607acb8), FXP_CAST(0x89be5a00), FXP_CAST(0xa9daa800) };
-
-const FIXP_PS aaFractDelayPhaseFactorReSubQmf20[NO_SUB_QMF_CHANNELS] = {
-FXP_CAST(0x7e807380), FXP_CAST(0x72b9bb00), FXP_CAST(0x5c44ee80), FXP_CAST(0x3d3938c0), FXP_CAST(0x80000000), FXP_CAST(0x80000000),
-FXP_CAST(0x72b9bb00), FXP_CAST(0x7e807380), FXP_CAST(0xba914700), FXP_CAST(0x050677b0), FXP_CAST(0x895cc380), FXP_CAST(0x834e4900) };
-
-const FIXP_PS aaFractDelayPhaseFactorImSubQmf20[NO_SUB_QMF_CHANNELS] = {
-FXP_CAST(0xec791720), FXP_CAST(0xc73ca080), FXP_CAST(0xa748ea00), FXP_CAST(0x8f976980), FXP_CAST(0x00000000), FXP_CAST(0x00000000),
-FXP_CAST(0x38c35f80), FXP_CAST(0x1386e8e0), FXP_CAST(0x9477d000), FXP_CAST(0x80194380), FXP_CAST(0xcff26140), FXP_CAST(0x1ce70d40) };
-
-const FIXP_PS aaFractDelayPhaseFactorSerReQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS] = {
-{FXP_CAST(0x63e52480), FXP_CAST(0x30fbc540), FXP_CAST(0x6d73af00)}, {FXP_CAST(0xc7b01280), FXP_CAST(0x89be5100), FXP_CAST(0xf7c31cb0)}, {FXP_CAST(0x83896200), FXP_CAST(0x7641af00), FXP_CAST(0x8aee2700)},
-{FXP_CAST(0x0202b330), FXP_CAST(0xcf043ac0), FXP_CAST(0x9bfab500)}, {FXP_CAST(0x7d572c80), FXP_CAST(0xcf043ac0), FXP_CAST(0x1893b960)}, {FXP_CAST(0x34ac7fc0), FXP_CAST(0x7641af00), FXP_CAST(0x7abf7980)},
-{FXP_CAST(0x99a3ee00), FXP_CAST(0x89be5100), FXP_CAST(0x58eead80)}, {FXP_CAST(0x9eab0580), FXP_CAST(0x30fbc540), FXP_CAST(0xd77dae40)}, {FXP_CAST(0x3be52140), FXP_CAST(0x30fbc540), FXP_CAST(0x819b8500)},
-{FXP_CAST(0x7b769d80), FXP_CAST(0x89be5100), FXP_CAST(0xb3a12280)}, {FXP_CAST(0xf9f86878), FXP_CAST(0x7641af00), FXP_CAST(0x37c519c0)}, {FXP_CAST(0x81e7ef80), FXP_CAST(0xcf043ac0), FXP_CAST(0x7ff16880)},
-{FXP_CAST(0xcf043cc0), FXP_CAST(0xcf043ac0), FXP_CAST(0x3e8b2340)}, {FXP_CAST(0x68b92280), FXP_CAST(0x7641af00), FXP_CAST(0xb9e4a900)}, {FXP_CAST(0x5eac3980), FXP_CAST(0x89be5100), FXP_CAST(0x80a05200)},
-{FXP_CAST(0xc094cd00), FXP_CAST(0x30fbc540), FXP_CAST(0xd051dc80)}, {FXP_CAST(0x85a89400), FXP_CAST(0x30fbc540), FXP_CAST(0x53483b00)}, {FXP_CAST(0x0a0af5e0), FXP_CAST(0x89be5100), FXP_CAST(0x7cb1b680)},
-{FXP_CAST(0x7eb91900), FXP_CAST(0x7641af00), FXP_CAST(0x2006e8c0)}, {FXP_CAST(0x2d3ea680), FXP_CAST(0xcf043ac0), FXP_CAST(0xa0ec1c00)}, {FXP_CAST(0x95044180), FXP_CAST(0xcf043ac0), FXP_CAST(0x880d2180)},
-{FXP_CAST(0xa4147300), FXP_CAST(0x7641af00), FXP_CAST(0xf0282870)}, {FXP_CAST(0x42e13f80), FXP_CAST(0x89be5100), FXP_CAST(0x694c4a00)}, {FXP_CAST(0x79195200), FXP_CAST(0x30fbc540), FXP_CAST(0x71374780)},
-{FXP_CAST(0xf1f43550), FXP_CAST(0x30fbc540), FXP_CAST(0xff6593ea)}, {FXP_CAST(0x80c5e280), FXP_CAST(0x89be5100), FXP_CAST(0x8e39ec00)}, {FXP_CAST(0xd689e480), FXP_CAST(0x7641af00), FXP_CAST(0x97648100)},
-{FXP_CAST(0x6d235300), FXP_CAST(0xcf043ac0), FXP_CAST(0x110a20c0)}, {FXP_CAST(0x5913a800), FXP_CAST(0xcf043ac0), FXP_CAST(0x785d4f80)}, {FXP_CAST(0xb9b99a00), FXP_CAST(0x7641af00), FXP_CAST(0x5e440880)},
-{FXP_CAST(0x88436100), FXP_CAST(0x89be5100), FXP_CAST(0xdece7000)}, {FXP_CAST(0x12091320), FXP_CAST(0x30fbc540), FXP_CAST(0x8309f800)}, {FXP_CAST(0x7f9afd00), FXP_CAST(0x30fbc540), FXP_CAST(0xada33f00)},
-{FXP_CAST(0x25a31700), FXP_CAST(0x89be5100), FXP_CAST(0x30cc3600)}, {FXP_CAST(0x90d0ab80), FXP_CAST(0x7641af00), FXP_CAST(0x7f7cbe80)}, {FXP_CAST(0xa9dabf00), FXP_CAST(0xcf043ac0), FXP_CAST(0x45182580)},
-{FXP_CAST(0x4999cb80), FXP_CAST(0xcf043ac0), FXP_CAST(0xc0681c80)}, {FXP_CAST(0x7641ac80), FXP_CAST(0x7641af00), FXP_CAST(0x80194380)}, {FXP_CAST(0xe9fe3300), FXP_CAST(0x89be5100), FXP_CAST(0xc95184c0)},
-{FXP_CAST(0x80246000), FXP_CAST(0x30fbc540), FXP_CAST(0x4d55d800)}, {FXP_CAST(0xde396fc0), FXP_CAST(0x30fbc540), FXP_CAST(0x7e324000)}, {FXP_CAST(0x711f3f00), FXP_CAST(0x89be5100), FXP_CAST(0x275ce480)},
-{FXP_CAST(0x53211700), FXP_CAST(0x7641af00), FXP_CAST(0xa6343580)}, {FXP_CAST(0xb3256780), FXP_CAST(0xcf043ac0), FXP_CAST(0x85997b80)}, {FXP_CAST(0x8b572680), FXP_CAST(0xcf043ac0), FXP_CAST(0xe89ba660)},
-{FXP_CAST(0x19f4f780), FXP_CAST(0x7641af00), FXP_CAST(0x64c4e100)}, {FXP_CAST(0x7ffbf580), FXP_CAST(0x89be5100), FXP_CAST(0x7493a380)}, {FXP_CAST(0x1de18100), FXP_CAST(0x30fbc540), FXP_CAST(0x070897f0)},
-{FXP_CAST(0x8d0d6a80), FXP_CAST(0x30fbc540), FXP_CAST(0x91ed6f00)}, {FXP_CAST(0xaff81380), FXP_CAST(0x89be5100), FXP_CAST(0x932db000)}, {FXP_CAST(0x5007fb00), FXP_CAST(0x7641af00), FXP_CAST(0x0970feb0)},
-{FXP_CAST(0x72f28d00), FXP_CAST(0xcf043ac0), FXP_CAST(0x758d6500)}, {FXP_CAST(0xe21e6cc0), FXP_CAST(0xcf043ac0), FXP_CAST(0x63436f80)}, {FXP_CAST(0x80040b00), FXP_CAST(0x7641af00), FXP_CAST(0xe63d7600)},
-{FXP_CAST(0xe60b1ae0), FXP_CAST(0x89be5100), FXP_CAST(0x84ea5c80)}, {FXP_CAST(0x74a8e100), FXP_CAST(0x30fbc540), FXP_CAST(0xa7f07500)}, {FXP_CAST(0x4cda8980), FXP_CAST(0x30fbc540), FXP_CAST(0x29a6d340)},
-{FXP_CAST(0xacdeda80), FXP_CAST(0x89be5100), FXP_CAST(0x7e93d600)}, {FXP_CAST(0x8ee0c980), FXP_CAST(0x7641af00), FXP_CAST(0x4b662680)}, {FXP_CAST(0x21c6a280), FXP_CAST(0xcf043ac0), FXP_CAST(0xc7258c80)},
-{FXP_CAST(0x7fdb9f00), FXP_CAST(0xcf043ac0), FXP_CAST(0x8006d500)}, {FXP_CAST(0x1601ba60), FXP_CAST(0x7641af00), FXP_CAST(0xc2830940)}, {FXP_CAST(0x89be4c80), FXP_CAST(0x89be5100), FXP_CAST(0x471cf100)},
-{FXP_CAST(0xb6664400), FXP_CAST(0x30fbc540), FXP_CAST(0x7f3fb800)}};
-
-const FIXP_PS aaFractDelayPhaseFactorSerImQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS] = {
-{FXP_CAST(0xaff80c80), FXP_CAST(0x89be5100), FXP_CAST(0xbda29e00)}, {FXP_CAST(0x8d0d6f00), FXP_CAST(0x30fbc540), FXP_CAST(0x8043ee80)}, {FXP_CAST(0x1de18a20), FXP_CAST(0x30fbc540), FXP_CAST(0xcc3e7840)},
-{FXP_CAST(0x7ffbf500), FXP_CAST(0x89be5100), FXP_CAST(0x4fdfc180)}, {FXP_CAST(0x19f4ee40), FXP_CAST(0x7641af00), FXP_CAST(0x7d9e4c00)}, {FXP_CAST(0x8b572300), FXP_CAST(0xcf043ac0), FXP_CAST(0x244a2940)},
-{FXP_CAST(0xb3256f00), FXP_CAST(0xcf043ac0), FXP_CAST(0xa3f0a500)}, {FXP_CAST(0x53211e00), FXP_CAST(0x7641af00), FXP_CAST(0x86944500)}, {FXP_CAST(0x711f3a80), FXP_CAST(0x89be5100), FXP_CAST(0xebc72040)},
-{FXP_CAST(0xde3966c0), FXP_CAST(0x30fbc540), FXP_CAST(0x66b87e00)}, {FXP_CAST(0x80246080), FXP_CAST(0x30fbc540), FXP_CAST(0x73362c00)}, {FXP_CAST(0xe9fe3c40), FXP_CAST(0x89be5100), FXP_CAST(0x03d1d110)},
-{FXP_CAST(0x7641b000), FXP_CAST(0x7641af00), FXP_CAST(0x90520c80)}, {FXP_CAST(0x4999c380), FXP_CAST(0xcf043ac0), FXP_CAST(0x94e80a80)}, {FXP_CAST(0xa9dab800), FXP_CAST(0xcf043ac0), FXP_CAST(0x0ca570e0)},
-{FXP_CAST(0x90d0b000), FXP_CAST(0x7641af00), FXP_CAST(0x76c9bc80)}, {FXP_CAST(0x25a32000), FXP_CAST(0x89be5100), FXP_CAST(0x61338500)}, {FXP_CAST(0x7f9afc80), FXP_CAST(0x30fbc540), FXP_CAST(0xe318f060)},
-{FXP_CAST(0x120909c0), FXP_CAST(0x30fbc540), FXP_CAST(0x84124e00)}, {FXP_CAST(0x88435d80), FXP_CAST(0x89be5100), FXP_CAST(0xaa4d2f80)}, {FXP_CAST(0xb9b9a200), FXP_CAST(0x7641af00), FXP_CAST(0x2cae1800)},
-{FXP_CAST(0x5913ae80), FXP_CAST(0xcf043ac0), FXP_CAST(0x7f040680)}, {FXP_CAST(0x6d234e00), FXP_CAST(0xcf043ac0), FXP_CAST(0x48c6a100)}, {FXP_CAST(0xd689db80), FXP_CAST(0x7641af00), FXP_CAST(0xc44860c0)},
-{FXP_CAST(0x80c5e380), FXP_CAST(0x89be5100), FXP_CAST(0x80005d00)}, {FXP_CAST(0xf1f43eb0), FXP_CAST(0x30fbc540), FXP_CAST(0xc55a3a00)}, {FXP_CAST(0x79195500), FXP_CAST(0x30fbc540), FXP_CAST(0x49c3de00)},
-{FXP_CAST(0x42e13700), FXP_CAST(0x89be5100), FXP_CAST(0x7edc5b00)}, {FXP_CAST(0xa4146c80), FXP_CAST(0x7641af00), FXP_CAST(0x2b8c2c00)}, {FXP_CAST(0x95044680), FXP_CAST(0xcf043ac0), FXP_CAST(0xa968c100)},
-{FXP_CAST(0x2d3eaf40), FXP_CAST(0xcf043ac0), FXP_CAST(0x8460fd80)}, {FXP_CAST(0x7eb91780), FXP_CAST(0x7641af00), FXP_CAST(0xe44621e0)}, {FXP_CAST(0x0a0aec80), FXP_CAST(0x89be5100), FXP_CAST(0x61fb5c00)},
-{FXP_CAST(0x85a89100), FXP_CAST(0x30fbc540), FXP_CAST(0x76555780)}, {FXP_CAST(0xc094d500), FXP_CAST(0x30fbc540), FXP_CAST(0x0b71f790)}, {FXP_CAST(0x5eac4000), FXP_CAST(0x89be5100), FXP_CAST(0x94401a80)},
-{FXP_CAST(0x68b91d80), FXP_CAST(0x7641af00), FXP_CAST(0x90ea3980)}, {FXP_CAST(0xcf043440), FXP_CAST(0xcf043ac0), FXP_CAST(0x05067a08)}, {FXP_CAST(0x81e7f180), FXP_CAST(0xcf043ac0), FXP_CAST(0x73bb6d00)},
-{FXP_CAST(0xf9f871e0), FXP_CAST(0x7641af00), FXP_CAST(0x65ff0e00)}, {FXP_CAST(0x7b76a000), FXP_CAST(0x89be5100), FXP_CAST(0xea9664c0)}, {FXP_CAST(0x3be518c0), FXP_CAST(0x30fbc540), FXP_CAST(0x8633e880)},
-{FXP_CAST(0x9eaaff00), FXP_CAST(0x30fbc540), FXP_CAST(0xa4c84500)}, {FXP_CAST(0x99a3f400), FXP_CAST(0x89be5100), FXP_CAST(0x2571eac0)}, {FXP_CAST(0x34ac8840), FXP_CAST(0x7641af00), FXP_CAST(0x7dd82b00)},
-{FXP_CAST(0x7d572a80), FXP_CAST(0xcf043ac0), FXP_CAST(0x4eed8400)}, {FXP_CAST(0x0202a9c4), FXP_CAST(0xcf043ac0), FXP_CAST(0xcb249700)}, {FXP_CAST(0x83896000), FXP_CAST(0x7641af00), FXP_CAST(0x80318200)},
-{FXP_CAST(0xc7b01b00), FXP_CAST(0x89be5100), FXP_CAST(0xbeab7580)}, {FXP_CAST(0x63e52a80), FXP_CAST(0x30fbc540), FXP_CAST(0x4364b700)}, {FXP_CAST(0x63e51f00), FXP_CAST(0x30fbc540), FXP_CAST(0x7fa6bd00)},
-{FXP_CAST(0xc7b00a00), FXP_CAST(0x89be5100), FXP_CAST(0x32a67940)}, {FXP_CAST(0x83896400), FXP_CAST(0x7641af00), FXP_CAST(0xaf2fd200)}, {FXP_CAST(0x0202bc9c), FXP_CAST(0xcf043ac0), FXP_CAST(0x829e6e80)},
-{FXP_CAST(0x7d572e80), FXP_CAST(0xcf043ac0), FXP_CAST(0xdcde6b80)}, {FXP_CAST(0x34ac7700), FXP_CAST(0x7641af00), FXP_CAST(0x5ce4e280)}, {FXP_CAST(0x99a3e880), FXP_CAST(0x89be5100), FXP_CAST(0x79089c00)},
-{FXP_CAST(0x9eab0b80), FXP_CAST(0x30fbc540), FXP_CAST(0x1307ae80)}, {FXP_CAST(0x3be52980), FXP_CAST(0x30fbc540), FXP_CAST(0x98906880)}, {FXP_CAST(0x7b769b00), FXP_CAST(0x89be5100), FXP_CAST(0x8d51b300)},
-{FXP_CAST(0xf9f85f10), FXP_CAST(0x7641af00), FXP_CAST(0xfd62ee24)}, {FXP_CAST(0x81e7ee00), FXP_CAST(0xcf043ac0), FXP_CAST(0x70439680)}, {FXP_CAST(0xcf044580), FXP_CAST(0xcf043ac0), FXP_CAST(0x6a6d9600)},
-{FXP_CAST(0x68b92800), FXP_CAST(0x7641af00), FXP_CAST(0xf2275f80)}};
-
-const FIXP_PS aaFractDelayPhaseFactorSerReSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS] = {
-{FXP_CAST(0x7e2df000), FXP_CAST(0x7a7d0580), FXP_CAST(0x7ed03e00)}, {FXP_CAST(0x6fec9a80), FXP_CAST(0x5133cc80), FXP_CAST(0x7573df00)}, {FXP_CAST(0x55063900), FXP_CAST(0x0c8bd360), FXP_CAST(0x636c0400)},
-{FXP_CAST(0x3084ca00), FXP_CAST(0xc3a94580), FXP_CAST(0x4a0d6700)}, {FXP_CAST(0x80000000), FXP_CAST(0x80000000), FXP_CAST(0x80000000)}, {FXP_CAST(0x80000000), FXP_CAST(0x80000000), FXP_CAST(0x80000000)},
-{FXP_CAST(0x6fec9a80), FXP_CAST(0x5133cc80), FXP_CAST(0x7573df00)}, {FXP_CAST(0x7e2df000), FXP_CAST(0x7a7d0580), FXP_CAST(0x7ed03e00)}, {FXP_CAST(0xa4c84280), FXP_CAST(0xb8e31300), FXP_CAST(0xd5af0140)},
-{FXP_CAST(0xf0f488a0), FXP_CAST(0x8275a100), FXP_CAST(0x1a72e360)}, {FXP_CAST(0x80aaa680), FXP_CAST(0x471ced00), FXP_CAST(0x9d2ead80)}, {FXP_CAST(0x9477d100), FXP_CAST(0x7d8a5f00), FXP_CAST(0x8151df80)}};
-
-const FIXP_PS aaFractDelayPhaseFactorSerImSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS] = {
-{FXP_CAST(0xea7d08a0), FXP_CAST(0xdad7f3c0), FXP_CAST(0xee9c9f60)}, {FXP_CAST(0xc1e54140), FXP_CAST(0x9d0dfe80), FXP_CAST(0xcd1e7300)}, {FXP_CAST(0xa051a580), FXP_CAST(0x809dc980), FXP_CAST(0xaf61c400)},
-{FXP_CAST(0x898d4e00), FXP_CAST(0x8f1d3400), FXP_CAST(0x97988280)}, {FXP_CAST(0x00000000), FXP_CAST(0x00000000), FXP_CAST(0x00000000)}, {FXP_CAST(0x00000000), FXP_CAST(0x00000000), FXP_CAST(0x00000000)},
-{FXP_CAST(0x3e1abec0), FXP_CAST(0x62f20180), FXP_CAST(0x32e18d00)}, {FXP_CAST(0x1582f760), FXP_CAST(0x25280c40), FXP_CAST(0x116360a0)}, {FXP_CAST(0xa6343800), FXP_CAST(0x6a6d9880), FXP_CAST(0x87327a00)},
-{FXP_CAST(0x80e32200), FXP_CAST(0xe70747c0), FXP_CAST(0x82c32b00)}, {FXP_CAST(0xf2f42420), FXP_CAST(0x6a6d9880), FXP_CAST(0xaea47080)}, {FXP_CAST(0x456eba00), FXP_CAST(0xe70747c0), FXP_CAST(0xedaa8640)}};
-
-const FIXP_PS p8_13_20[13] =
-{
- FL2FXCONST_PS(0.00746082949812f), FL2FXCONST_PS(0.02270420949825f), FL2FXCONST_PS(0.04546865930473f), FL2FXCONST_PS(0.07266113929591f),
- FL2FXCONST_PS(0.09885108575264f), FL2FXCONST_PS(0.11793710567217f), FL2FXCONST_PS(0.125f ), FL2FXCONST_PS(0.11793710567217f),
- FL2FXCONST_PS(0.09885108575264f), FL2FXCONST_PS(0.07266113929591f), FL2FXCONST_PS(0.04546865930473f), FL2FXCONST_PS(0.02270420949825f),
- FL2FXCONST_PS(0.00746082949812f)
-};
-
-const FIXP_PS p2_13_20[13] =
-{
- FL2FXCONST_PS(0.0f), FL2FXCONST_PS( 0.01899487526049f), FL2FXCONST_PS(0.0f), FL2FXCONST_PS(-0.07293139167538f),
- FL2FXCONST_PS(0.0f), FL2FXCONST_PS( 0.30596630545168f), FL2FXCONST_PS(0.5f), FL2FXCONST_PS( 0.30596630545168f),
- FL2FXCONST_PS(0.0f), FL2FXCONST_PS(-0.07293139167538f), FL2FXCONST_PS(0.0f), FL2FXCONST_PS( 0.01899487526049f),
- FL2FXCONST_PS(0.0f)
-};
-
-
-
-const UCHAR aAllpassLinkDelaySer[] = { 3, 4, 5};
-
-const UCHAR delayIndexQmf[NO_QMF_CHANNELS] = {
- 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
- 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
-};
-
-const UCHAR groupBorders20[NO_IID_GROUPS + 1] =
-{
- 6, 7, 0, 1, 2, 3, /* 6 subqmf subbands - 0th qmf subband */
- 9, 8, /* 2 subqmf subbands - 1st qmf subband */
- 10, 11, /* 2 subqmf subbands - 2nd qmf subband */
- 3, 4, 5, 6, 7, 8,
- 9, 11, 14, 18, 23, 35, 64
-};
-
-const UCHAR groupBorders34[NO_IID_GROUPS_HI_RES + 1] =
-{
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, /* 12 subqmf subbands - 0th qmf subband */
- 12, 13, 14, 15, 16, 17, 18, 19, /* 8 subqmf subbands - 1st qmf subband */
- 20, 21, 22, 23, /* 4 subqmf subbands - 2nd qmf subband */
- 24, 25, 26, 27, /* 4 subqmf subbands - 3nd qmf subband */
- 28, 29, 30, 31, /* 4 subqmf subbands - 4nd qmf subband */
- 32-27, 33-27, 34-27, 35-27, 36-27, 37-27, 38-27,
- 40-27, 42-27, 44-27, 46-27, 48-27, 51-27, 54-27,
- 57-27, 60-27, 64-27, 68-27, 91-27
-};
-
-const UCHAR bins2groupMap20[NO_IID_GROUPS] =
-{
- 1, 0,
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
-};
-
-const UCHAR quantizedIIDs[NO_IID_STEPS] =
-{
- 2, 4, 7, 10, 14, 18, 25
-};
-const UCHAR quantizedIIDsFine[NO_IID_STEPS_FINE] =
-{
- 2, 4, 6, 8, 10, 13, 16, 19, 22, 25, 30, 35, 40, 45, 50
-};
-
-const UCHAR FDK_sbrDecoder_aNoIidBins[3] = {NO_LOW_RES_IID_BINS,
- NO_MID_RES_IID_BINS,
- NO_HI_RES_IID_BINS};
-
-const UCHAR FDK_sbrDecoder_aNoIccBins[3] = {NO_LOW_RES_ICC_BINS,
- NO_MID_RES_ICC_BINS,
- NO_HI_RES_ICC_BINS};
-
-
-
-/************************************************************************/
-/*!
- \brief Create lookup tables for some arithmetic functions
-
- The tables would normally be defined as const arrays,
- but initialization at run time allows to specify their accuracy.
-*/
-/************************************************************************/
-
-/* 1/x-table: (example for INV_TABLE_BITS 8)
-
- The table covers an input range from 0.5 to 1.0 with a step size of 1/512,
- starting at 0.5 + 1/512.
- Each table entry corresponds to an input interval starting 1/1024 below the
- exact value and ending 1/1024 above it.
-
- The table is actually a 0.5/x-table, so that the output range is again
- 0.5...1.0 and the exponent of the result must be increased by 1.
-
- Input range Index in table result
- -------------------------------------------------------------------
- 0.500000...0.500976 - 0.5 / 0.500000 = 1.000000
- 0.500976...0.502930 0 0.5 / 0.501953 = 0.996109
- 0.502930...0.500488 1 0.5 / 0.503906 = 0.992248
- ...
- 0.999023...1.000000 255 0.5 / 1.000000 = 0.500000
-
- for (i=0; i<INV_TABLE_SIZE; i++) {
- d = 0.5f / ( 0.5f+(double)(i+1)/(INV_TABLE_SIZE*2) ) ;
- invTable[i] = FL2FX_SGL(d);
- }
-*/
-const FIXP_SGL FDK_sbrDecoder_invTable[INV_TABLE_SIZE] =
-{
- 0x7f80, 0x7f01, 0x7e83, 0x7e07, 0x7d8b, 0x7d11, 0x7c97, 0x7c1e,
- 0x7ba6, 0x7b2f, 0x7ab9, 0x7a44, 0x79cf, 0x795c, 0x78e9, 0x7878,
- 0x7807, 0x7796, 0x7727, 0x76b9, 0x764b, 0x75de, 0x7572, 0x7506,
- 0x749c, 0x7432, 0x73c9, 0x7360, 0x72f9, 0x7292, 0x722c, 0x71c6,
- 0x7161, 0x70fd, 0x709a, 0x7037, 0x6fd5, 0x6f74, 0x6f13, 0x6eb3,
- 0x6e54, 0x6df5, 0x6d97, 0x6d39, 0x6cdc, 0x6c80, 0x6c24, 0x6bc9,
- 0x6b6f, 0x6b15, 0x6abc, 0x6a63, 0x6a0b, 0x69b3, 0x695c, 0x6906,
- 0x68b0, 0x685a, 0x6806, 0x67b1, 0x675e, 0x670a, 0x66b8, 0x6666,
- 0x6614, 0x65c3, 0x6572, 0x6522, 0x64d2, 0x6483, 0x6434, 0x63e6,
- 0x6399, 0x634b, 0x62fe, 0x62b2, 0x6266, 0x621b, 0x61d0, 0x6185,
- 0x613b, 0x60f2, 0x60a8, 0x6060, 0x6017, 0x5fcf, 0x5f88, 0x5f41,
- 0x5efa, 0x5eb4, 0x5e6e, 0x5e28, 0x5de3, 0x5d9f, 0x5d5a, 0x5d17,
- 0x5cd3, 0x5c90, 0x5c4d, 0x5c0b, 0x5bc9, 0x5b87, 0x5b46, 0x5b05,
- 0x5ac4, 0x5a84, 0x5a44, 0x5a05, 0x59c6, 0x5987, 0x5949, 0x590a,
- 0x58cd, 0x588f, 0x5852, 0x5815, 0x57d9, 0x579d, 0x5761, 0x5725,
- 0x56ea, 0x56af, 0x5675, 0x563b, 0x5601, 0x55c7, 0x558e, 0x5555,
- 0x551c, 0x54e3, 0x54ab, 0x5473, 0x543c, 0x5405, 0x53ce, 0x5397,
- 0x5360, 0x532a, 0x52f4, 0x52bf, 0x5289, 0x5254, 0x521f, 0x51eb,
- 0x51b7, 0x5183, 0x514f, 0x511b, 0x50e8, 0x50b5, 0x5082, 0x5050,
- 0x501d, 0x4feb, 0x4fba, 0x4f88, 0x4f57, 0x4f26, 0x4ef5, 0x4ec4,
- 0x4e94, 0x4e64, 0x4e34, 0x4e04, 0x4dd5, 0x4da6, 0x4d77, 0x4d48,
- 0x4d19, 0x4ceb, 0x4cbd, 0x4c8f, 0x4c61, 0x4c34, 0x4c07, 0x4bd9,
- 0x4bad, 0x4b80, 0x4b54, 0x4b27, 0x4afb, 0x4acf, 0x4aa4, 0x4a78,
- 0x4a4d, 0x4a22, 0x49f7, 0x49cd, 0x49a2, 0x4978, 0x494e, 0x4924,
- 0x48fa, 0x48d1, 0x48a7, 0x487e, 0x4855, 0x482d, 0x4804, 0x47dc,
- 0x47b3, 0x478b, 0x4763, 0x473c, 0x4714, 0x46ed, 0x46c5, 0x469e,
- 0x4677, 0x4651, 0x462a, 0x4604, 0x45de, 0x45b8, 0x4592, 0x456c,
- 0x4546, 0x4521, 0x44fc, 0x44d7, 0x44b2, 0x448d, 0x4468, 0x4444,
- 0x441f, 0x43fb, 0x43d7, 0x43b3, 0x4390, 0x436c, 0x4349, 0x4325,
- 0x4302, 0x42df, 0x42bc, 0x4299, 0x4277, 0x4254, 0x4232, 0x4210,
- 0x41ee, 0x41cc, 0x41aa, 0x4189, 0x4167, 0x4146, 0x4125, 0x4104,
- 0x40e3, 0x40c2, 0x40a1, 0x4081, 0x4060, 0x4040, 0x4020, 0x4000
-};
-
diff --git a/libSBRdec/src/sbr_rom.h b/libSBRdec/src/sbr_rom.h
deleted file mode 100644
index c318870..0000000
--- a/libSBRdec/src/sbr_rom.h
+++ /dev/null
@@ -1,234 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
-\file
-\brief Declaration of constant tables
-
-*/
-#ifndef __rom_H
-#define __rom_H
-
-#include "sbrdecoder.h"
-#include "env_extr.h"
-#include "qmf.h"
-
-#define INV_INT_TABLE_SIZE 49
-#define SBR_NF_NO_RANDOM_VAL 512 /*!< Size of random number array for noise floor */
-
-/*
- Frequency scales
-*/
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_16[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_22[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_24[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_32[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_40[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_44[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_48[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_64[16];
-extern const UCHAR FDK_sbrDecoder_sbr_start_freq_88[16];
-
-/*
- Low-Power-Profile Transposer
-*/
-#define NUM_WHFACTOR_TABLE_ENTRIES 9
-extern const USHORT FDK_sbrDecoder_sbr_whFactorsIndex[NUM_WHFACTOR_TABLE_ENTRIES];
-extern const FIXP_DBL FDK_sbrDecoder_sbr_whFactorsTable[NUM_WHFACTOR_TABLE_ENTRIES][6];
-
-
-
-/*
- Envelope Adjustor
-*/
-extern const FIXP_SGL FDK_sbrDecoder_sbr_limGains_m[4];
-extern const UCHAR FDK_sbrDecoder_sbr_limGains_e[4];
-extern const FIXP_SGL FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4[4];
-extern const FIXP_SGL FDK_sbrDecoder_sbr_smoothFilter[4];
-extern const FIXP_SGL FDK_sbrDecoder_sbr_randomPhase[SBR_NF_NO_RANDOM_VAL][2];
-extern const FIXP_SGL harmonicPhaseX [2][4];
-
-/*
- Envelope Extractor
-*/
-extern const int FDK_sbrDecoder_envelopeTable_8 [8][5];
-extern const int FDK_sbrDecoder_envelopeTable_15 [15][6];
-extern const int FDK_sbrDecoder_envelopeTable_16 [16][6];
-
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_15;
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_15;
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_15;
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_15;
-
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_16;
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_16;
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_16;
-extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_16;
-
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10T[120][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10F[120][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10T[48][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10F[48][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11T[62][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11F[62][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11T[24][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11F[24][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseLevel11T[62][2];
-extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseBalance11T[24][2];
-
-
-/*
- Parametric stereo
-*/
-
-
-extern const FIXP_DBL decayScaleFactTable[NO_QMF_CHANNELS];
-
-/* FIX_BORDER can have 0, 1, 2, 4 envelops */
-extern const UCHAR FDK_sbrDecoder_aFixNoEnvDecode[4];
-
-/* IID & ICC Huffman codebooks */
-extern const SCHAR aBookPsIidTimeDecode[28][2];
-extern const SCHAR aBookPsIidFreqDecode[28][2];
-extern const SCHAR aBookPsIccTimeDecode[14][2];
-extern const SCHAR aBookPsIccFreqDecode[14][2];
-
-/* IID-fine Huffman codebooks */
-
-extern const SCHAR aBookPsIidFineTimeDecode[60][2];
-extern const SCHAR aBookPsIidFineFreqDecode[60][2];
-
-/* the values of the following 3 tables are shiftet right by 1 ! */
-extern const FIXP_DBL ScaleFactors[NO_IID_LEVELS];
-extern const FIXP_DBL ScaleFactorsFine[NO_IID_LEVELS_FINE];
-extern const FIXP_DBL Alphas[NO_ICC_LEVELS];
-
-#if defined(ARCH_PREFER_MULT_32x16)
-extern const FIXP_SGL aAllpassLinkDecaySer[NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_SGL aaFractDelayPhaseFactorReQmf[NO_QMF_CHANNELS];
-extern const FIXP_SGL aaFractDelayPhaseFactorImQmf[NO_QMF_CHANNELS];
-extern const FIXP_SGL aaFractDelayPhaseFactorReSubQmf20[NO_SUB_QMF_CHANNELS];
-extern const FIXP_SGL aaFractDelayPhaseFactorImSubQmf20[NO_SUB_QMF_CHANNELS];
-
-extern const FIXP_SGL aaFractDelayPhaseFactorSerReQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_SGL aaFractDelayPhaseFactorSerImQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_SGL aaFractDelayPhaseFactorSerReSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_SGL aaFractDelayPhaseFactorSerImSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-
-extern const FIXP_SGL p8_13_20[13];
-extern const FIXP_SGL p2_13_20[13];
-
-#else
-extern const FIXP_DBL aAllpassLinkDecaySer[NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_DBL aaFractDelayPhaseFactorReQmf[NO_QMF_CHANNELS];
-extern const FIXP_DBL aaFractDelayPhaseFactorImQmf[NO_QMF_CHANNELS];
-extern const FIXP_DBL aaFractDelayPhaseFactorReSubQmf20[NO_SUB_QMF_CHANNELS];
-extern const FIXP_DBL aaFractDelayPhaseFactorImSubQmf20[NO_SUB_QMF_CHANNELS];
-
-extern const FIXP_DBL aaFractDelayPhaseFactorSerReQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_DBL aaFractDelayPhaseFactorSerImQmf[NO_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_DBL aaFractDelayPhaseFactorSerReSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-extern const FIXP_DBL aaFractDelayPhaseFactorSerImSubQmf20[NO_SUB_QMF_CHANNELS][NO_SERIAL_ALLPASS_LINKS];
-
-extern const FIXP_DBL p8_13_20[13];
-extern const FIXP_DBL p2_13_20[13];
-#endif
-
-extern const UCHAR aAllpassLinkDelaySer[3];
-extern const UCHAR delayIndexQmf[NO_QMF_CHANNELS];
-extern const UCHAR groupBorders20[NO_IID_GROUPS + 1];
-extern const UCHAR groupBorders34[NO_IID_GROUPS_HI_RES + 1];
-extern const UCHAR bins2groupMap20[NO_IID_GROUPS];
-extern const UCHAR quantizedIIDs[NO_IID_STEPS];
-extern const UCHAR quantizedIIDsFine[NO_IID_STEPS_FINE];
-extern const UCHAR FDK_sbrDecoder_aNoIidBins[3];
-extern const UCHAR FDK_sbrDecoder_aNoIccBins[3];
-
-
-/* Lookup tables for some arithmetic functions */
-
-#define INV_TABLE_BITS 8
-#define INV_TABLE_SIZE (1<<INV_TABLE_BITS)
-extern const FIXP_SGL FDK_sbrDecoder_invTable[INV_TABLE_SIZE];
-
-#endif // __rom_H
diff --git a/libSBRdec/src/sbr_scale.h b/libSBRdec/src/sbr_scale.h
deleted file mode 100644
index 5fccd71..0000000
--- a/libSBRdec/src/sbr_scale.h
+++ /dev/null
@@ -1,123 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
-\file
-\brief Sbr scaling factors,
-To deal with the dynamic range in the different processing stages, a
-fixed point specific code has to rely on scaling factors. A floating
-point code carries a scaling factor -- the exponent -- for each value,
-so scaling is not necessary there.
-
-The output of the core decoder (low band) is scaled up to cover as much
-as possible bits for each value. As high band and low band are processed
-in different algorithm sections, they require their own scaling
-factors. In addition, any static buffers, e.g. filter states, require a
-separate scaling factor as well. The code takes care to do the proper
-adjustment, if scaling factors of a filter state and the time signal differ.
-
-\sa #QMF_SCALE_FACTOR, \ref documentationOverview
-*/
-
-#ifndef __SBR_SCALE_H
-#define __SBR_SCALE_H
-
-/*!
-\verbatim
- scale:
- 0 left aligned e.g. |max| >=0.5
- FRACT_BITS-1 zero e.g |max| = 0
-\endverbatim
-
- Dynamic scaling is used to achieve sufficient accuracy even when the signal
- energy is low. The dynamic framing of SBR produces a variable overlap area
- where samples from the previous QMF-Analysis are stored. Depending on the
- start position and stop position of the current SBR envelopes, the processing
- buffer consists of differently scaled regions like illustrated in the below
- figure.
-
- \image html scales.png Scale
-*/
-
-
-#endif
diff --git a/libSBRdec/src/sbrdec_drc.cpp b/libSBRdec/src/sbrdec_drc.cpp
deleted file mode 100644
index a834c0b..0000000
--- a/libSBRdec/src/sbrdec_drc.cpp
+++ /dev/null
@@ -1,525 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/***************************** MPEG-4 AAC Decoder **************************
-
- Author(s): Christian Griebel
- Description: Dynamic range control (DRC) decoder tool for SBR
-
-******************************************************************************/
-
-#include "sbrdec_drc.h"
-
-
-/* DRC - Offset table for QMF interpolation. */
-static const int offsetTab[2][16] =
-{
- { 0, 4, 8, 12, 16, 20, 24, 28, 0, 0, 0, 0, 0, 0, 0, 0 }, /* 1024 framing */
- { 0, 4, 8, 12, 16, 19, 22, 26, 0, 0, 0, 0, 0, 0, 0, 0 } /* 960 framing */
-};
-
-/*!
- \brief Initialize DRC QMF factors
-
- \hDrcData Handle to DRC channel data.
-
- \return none
-*/
-void sbrDecoder_drcInitChannel (
- HANDLE_SBR_DRC_CHANNEL hDrcData )
-{
- int band;
-
- if (hDrcData == NULL) {
- return;
- }
-
- for (band = 0; band < (64); band++) {
- hDrcData->prevFact_mag[band] = FL2FXCONST_DBL(0.5f);
- }
-
- for (band = 0; band < SBRDEC_MAX_DRC_BANDS; band++) {
- hDrcData->currFact_mag[band] = FL2FXCONST_DBL(0.5f);
- hDrcData->nextFact_mag[band] = FL2FXCONST_DBL(0.5f);
- }
-
- hDrcData->prevFact_exp = 1;
- hDrcData->currFact_exp = 1;
- hDrcData->nextFact_exp = 1;
-
- hDrcData->numBandsCurr = 1;
- hDrcData->numBandsNext = 1;
-
- hDrcData->winSequenceCurr = 0;
- hDrcData->winSequenceNext = 0;
-
- hDrcData->drcInterpolationSchemeCurr = 0;
- hDrcData->drcInterpolationSchemeNext = 0;
-
- hDrcData->enable = 0;
-}
-
-
-/*!
- \brief Swap DRC QMF scaling factors after they have been applied.
-
- \hDrcData Handle to DRC channel data.
-
- \return none
-*/
-void sbrDecoder_drcUpdateChannel (
- HANDLE_SBR_DRC_CHANNEL hDrcData )
-{
- if (hDrcData == NULL) {
- return;
- }
- if (hDrcData->enable != 1) {
- return;
- }
-
- /* swap previous data */
- FDKmemcpy( hDrcData->currFact_mag,
- hDrcData->nextFact_mag,
- SBRDEC_MAX_DRC_BANDS * sizeof(FIXP_DBL) );
-
- hDrcData->currFact_exp = hDrcData->nextFact_exp;
-
- hDrcData->numBandsCurr = hDrcData->numBandsNext;
-
- FDKmemcpy( hDrcData->bandTopCurr,
- hDrcData->bandTopNext,
- SBRDEC_MAX_DRC_BANDS * sizeof(USHORT) );
-
- hDrcData->drcInterpolationSchemeCurr = hDrcData->drcInterpolationSchemeNext;
-
- hDrcData->winSequenceCurr = hDrcData->winSequenceNext;
-}
-
-
-/*!
- \brief Apply DRC factors slot based.
-
- \hDrcData Handle to DRC channel data.
- \qmfRealSlot Pointer to real valued QMF data of one time slot.
- \qmfImagSlot Pointer to the imaginary QMF data of one time slot.
- \col Number of the time slot.
- \numQmfSubSamples Total number of time slots for one frame.
- \scaleFactor Pointer to the out scale factor of the time slot.
-
- \return None.
-*/
-void sbrDecoder_drcApplySlot (
- HANDLE_SBR_DRC_CHANNEL hDrcData,
- FIXP_DBL *qmfRealSlot,
- FIXP_DBL *qmfImagSlot,
- int col,
- int numQmfSubSamples,
- int maxShift
- )
-{
- const int *offset;
-
- int band, bottomMdct, topMdct, bin, useLP;
- int indx = numQmfSubSamples - (numQmfSubSamples >> 1) - 10; /* l_border */
- int frameLenFlag = (numQmfSubSamples == 30) ? 1 : 0;
-
- const FIXP_DBL *fact_mag = NULL;
- INT fact_exp = 0;
- UINT numBands = 0;
- USHORT *bandTop = NULL;
- int shortDrc = 0;
-
- FIXP_DBL alphaValue = FL2FXCONST_DBL(0.0f);
-
- if (hDrcData == NULL) {
- return;
- }
- if (hDrcData->enable != 1) {
- return;
- }
-
- offset = offsetTab[frameLenFlag];
-
- useLP = (qmfImagSlot == NULL) ? 1 : 0;
-
- col += indx;
- bottomMdct = 0;
- bin = 0;
-
- /* get respective data and calc interpolation factor */
- if (col < (numQmfSubSamples>>1)) { /* first half of current frame */
- if (hDrcData->winSequenceCurr != 2) { /* long window */
- int j = col + (numQmfSubSamples>>1);
-
- if (hDrcData->drcInterpolationSchemeCurr == 0) {
- INT k = (frameLenFlag) ? 0x4444444 : 0x4000000;
-
- alphaValue = (FIXP_DBL)(j * k);
- }
- else {
- if (j >= offset[hDrcData->drcInterpolationSchemeCurr - 1]) {
- alphaValue = (FIXP_DBL)MAXVAL_DBL;
- }
- }
- }
- else { /* short windows */
- shortDrc = 1;
- }
-
- fact_mag = hDrcData->currFact_mag;
- fact_exp = hDrcData->currFact_exp;
- numBands = hDrcData->numBandsCurr;
- bandTop = hDrcData->bandTopCurr;
- }
- else if (col < numQmfSubSamples) { /* second half of current frame */
- if (hDrcData->winSequenceNext != 2) { /* next: long window */
- int j = col - (numQmfSubSamples>>1);
-
- if (hDrcData->drcInterpolationSchemeNext == 0) {
- INT k = (frameLenFlag) ? 0x4444444 : 0x4000000;
-
- alphaValue = (FIXP_DBL)(j * k);
- }
- else {
- if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) {
- alphaValue = (FIXP_DBL)MAXVAL_DBL;
- }
- }
-
- fact_mag = hDrcData->nextFact_mag;
- fact_exp = hDrcData->nextFact_exp;
- numBands = hDrcData->numBandsNext;
- bandTop = hDrcData->bandTopNext;
- }
- else { /* next: short windows */
- if (hDrcData->winSequenceCurr != 2) { /* current: long window */
- alphaValue = (FIXP_DBL)0;
-
- fact_mag = hDrcData->nextFact_mag;
- fact_exp = hDrcData->nextFact_exp;
- numBands = hDrcData->numBandsNext;
- bandTop = hDrcData->bandTopNext;
- }
- else { /* current: short windows */
- shortDrc = 1;
-
- fact_mag = hDrcData->currFact_mag;
- fact_exp = hDrcData->currFact_exp;
- numBands = hDrcData->numBandsCurr;
- bandTop = hDrcData->bandTopCurr;
- }
- }
- }
- else { /* first half of next frame */
- if (hDrcData->winSequenceNext != 2) { /* long window */
- int j = col - (numQmfSubSamples>>1);
-
- if (hDrcData->drcInterpolationSchemeNext == 0) {
- INT k = (frameLenFlag) ? 0x4444444 : 0x4000000;
-
- alphaValue = (FIXP_DBL)(j * k);
- }
- else {
- if (j >= offset[hDrcData->drcInterpolationSchemeNext - 1]) {
- alphaValue = (FIXP_DBL)MAXVAL_DBL;
- }
- }
- }
- else { /* short windows */
- shortDrc = 1;
- }
-
- fact_mag = hDrcData->nextFact_mag;
- fact_exp = hDrcData->nextFact_exp;
- numBands = hDrcData->numBandsNext;
- bandTop = hDrcData->bandTopNext;
-
- col -= numQmfSubSamples;
- }
-
-
- /* process bands */
- for (band = 0; band < (int)numBands; band++) {
- int bottomQmf, topQmf;
-
- FIXP_DBL drcFact_mag = (FIXP_DBL)MAXVAL_DBL;
-
- topMdct = (bandTop[band]+1) << 2;
-
- if (!shortDrc) { /* long window */
- if (frameLenFlag) {
- /* 960 framing */
- bottomMdct = 30 * (bottomMdct / 30);
- topMdct = 30 * (topMdct / 30);
-
- bottomQmf = fMultIfloor((FIXP_DBL)0x4444444, bottomMdct);
- topQmf = fMultIfloor((FIXP_DBL)0x4444444, topMdct);
- }
- else {
- /* 1024 framing */
- bottomMdct &= ~0x1f;
- topMdct &= ~0x1f;
-
- bottomQmf = bottomMdct >> 5;
- topQmf = topMdct >> 5;
- }
-
- if (band == ((int)numBands-1)) {
- topQmf = (64);
- }
-
- for (bin = bottomQmf; bin < topQmf; bin++) {
- FIXP_DBL drcFact1_mag = hDrcData->prevFact_mag[bin];
- FIXP_DBL drcFact2_mag = fact_mag[band];
-
- /* normalize scale factors */
- if (hDrcData->prevFact_exp < maxShift) {
- drcFact1_mag >>= maxShift - hDrcData->prevFact_exp;
- }
- if (fact_exp < maxShift) {
- drcFact2_mag >>= maxShift - fact_exp;
- }
-
- /* interpolate */
- if (alphaValue == (FIXP_DBL)0) {
- drcFact_mag = drcFact1_mag;
- } else if (alphaValue == (FIXP_DBL)MAXVAL_DBL) {
- drcFact_mag = drcFact2_mag;
- } else {
- drcFact_mag = fMult(alphaValue, drcFact2_mag) + fMult(((FIXP_DBL)MAXVAL_DBL - alphaValue), drcFact1_mag);
- }
-
- /* apply scaling */
- qmfRealSlot[bin] = fMult(qmfRealSlot[bin], drcFact_mag);
- if (!useLP) {
- qmfImagSlot[bin] = fMult(qmfImagSlot[bin], drcFact_mag);
- }
-
- /* save previous factors */
- if (col == (numQmfSubSamples>>1)-1) {
- hDrcData->prevFact_mag[bin] = fact_mag[band];
- }
- }
- }
- else { /* short windows */
- int startSample, stopSample;
- FIXP_DBL invFrameSizeDiv8 = (frameLenFlag) ? (FIXP_DBL)0x1111111 : (FIXP_DBL)0x1000000;
-
- if (frameLenFlag) {
- /* 960 framing */
- bottomMdct = 30/8 * (bottomMdct*8/30);
- topMdct = 30/8 * (topMdct*8/30);
- }
- else {
- /* 1024 framing */
- bottomMdct &= ~0x03;
- topMdct &= ~0x03;
- }
-
- /* startSample is truncated to the nearest corresponding start subsample in
- the QMF of the short window bottom is present in:*/
- startSample = ((fMultIfloor( invFrameSizeDiv8, bottomMdct ) & 0x7) * numQmfSubSamples) >> 3;
-
- /* stopSample is rounded upwards to the nearest corresponding stop subsample
- in the QMF of the short window top is present in. */
- stopSample = ((fMultIceil( invFrameSizeDiv8, topMdct ) & 0xf) * numQmfSubSamples) >> 3;
-
- bottomQmf = fMultIfloor( invFrameSizeDiv8, ((bottomMdct%(numQmfSubSamples<<2)) << 5) );
- topQmf = fMultIfloor( invFrameSizeDiv8, ((topMdct%(numQmfSubSamples<<2)) << 5) );
-
- /* extend last band */
- if (band == ((int)numBands-1)) {
- topQmf = (64);
- stopSample = numQmfSubSamples;
- }
-
- if (topQmf == 0) {
- topQmf = (64);
- }
-
- /* save previous factors */
- if (stopSample == numQmfSubSamples) {
- int tmpBottom = bottomQmf;
-
- if (((numQmfSubSamples-1) & ~0x03) > startSample) {
- tmpBottom = 0; /* band starts in previous short window */
- }
-
- for (bin = tmpBottom; bin < topQmf; bin++) {
- hDrcData->prevFact_mag[bin] = fact_mag[band];
- }
- }
-
- /* apply */
- if ((col >= startSample) && (col < stopSample)) {
- if ((col & ~0x03) > startSample) {
- bottomQmf = 0; /* band starts in previous short window */
- }
- if (col < ((stopSample-1) & ~0x03)) {
- topQmf = (64); /* band ends in next short window */
- }
-
- drcFact_mag = fact_mag[band];
-
- /* normalize scale factor */
- if (fact_exp < maxShift) {
- drcFact_mag >>= maxShift - fact_exp;
- }
-
- /* apply scaling */
- for (bin = bottomQmf; bin < topQmf; bin++) {
- qmfRealSlot[bin] = fMult(qmfRealSlot[bin], drcFact_mag);
- if (!useLP) {
- qmfImagSlot[bin] = fMult(qmfImagSlot[bin], drcFact_mag);
- }
- }
- }
- }
-
- bottomMdct = topMdct;
- } /* end of bands loop */
-
- if (col == (numQmfSubSamples>>1)-1) {
- hDrcData->prevFact_exp = fact_exp;
- }
-}
-
-
-/*!
- \brief Apply DRC factors frame based.
-
- \hDrcData Handle to DRC channel data.
- \qmfRealSlot Pointer to real valued QMF data of the whole frame.
- \qmfImagSlot Pointer to the imaginary QMF data of the whole frame.
- \numQmfSubSamples Total number of time slots for one frame.
- \scaleFactor Pointer to the out scale factor of the frame.
-
- \return None.
-*/
-void sbrDecoder_drcApply (
- HANDLE_SBR_DRC_CHANNEL hDrcData,
- FIXP_DBL **QmfBufferReal,
- FIXP_DBL **QmfBufferImag,
- int numQmfSubSamples,
- int *scaleFactor
- )
-{
- int col;
- int maxShift = 0;
-
- if (hDrcData == NULL) {
- return;
- }
- if (hDrcData->enable == 0) {
- return; /* Avoid changing the scaleFactor even though the processing is disabled. */
- }
-
- /* get max scale factor */
- if (hDrcData->prevFact_exp > maxShift) {
- maxShift = hDrcData->prevFact_exp;
- }
- if (hDrcData->currFact_exp > maxShift) {
- maxShift = hDrcData->currFact_exp;
- }
- if (hDrcData->nextFact_exp > maxShift) {
- maxShift = hDrcData->nextFact_exp;
- }
-
- for (col = 0; col < numQmfSubSamples; col++)
- {
- FIXP_DBL *qmfSlotReal = QmfBufferReal[col];
- FIXP_DBL *qmfSlotImag = (QmfBufferImag == NULL) ? NULL : QmfBufferImag[col];
-
- sbrDecoder_drcApplySlot (
- hDrcData,
- qmfSlotReal,
- qmfSlotImag,
- col,
- numQmfSubSamples,
- maxShift
- );
- }
-
- *scaleFactor += maxShift;
-}
-
diff --git a/libSBRdec/src/sbrdec_drc.h b/libSBRdec/src/sbrdec_drc.h
deleted file mode 100644
index 872c6a0..0000000
--- a/libSBRdec/src/sbrdec_drc.h
+++ /dev/null
@@ -1,151 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/***************************** MPEG-4 AAC Decoder **************************
-
- Author(s): Christian Griebel
- Description: Dynamic range control (DRC) decoder tool for SBR
-
-******************************************************************************/
-
-#ifndef _SBRDEC_DRC_H_
-#define _SBRDEC_DRC_H_
-
-#include "sbrdecoder.h"
-
-
-
-#define SBRDEC_MAX_DRC_CHANNELS (6)
-#define SBRDEC_MAX_DRC_BANDS ( 16 )
-
-typedef struct
-{
- FIXP_DBL prevFact_mag[(64)];
- INT prevFact_exp;
-
- FIXP_DBL currFact_mag[SBRDEC_MAX_DRC_BANDS];
- FIXP_DBL nextFact_mag[SBRDEC_MAX_DRC_BANDS];
- INT currFact_exp;
- INT nextFact_exp;
-
- UINT numBandsCurr;
- UINT numBandsNext;
- USHORT bandTopCurr[SBRDEC_MAX_DRC_BANDS];
- USHORT bandTopNext[SBRDEC_MAX_DRC_BANDS];
-
- SHORT drcInterpolationSchemeCurr;
- SHORT drcInterpolationSchemeNext;
-
- SHORT enable;
-
- UCHAR winSequenceCurr;
- UCHAR winSequenceNext;
-
-} SBRDEC_DRC_CHANNEL;
-
-typedef SBRDEC_DRC_CHANNEL * HANDLE_SBR_DRC_CHANNEL;
-
-
-void sbrDecoder_drcInitChannel (
- HANDLE_SBR_DRC_CHANNEL hDrcData );
-
-void sbrDecoder_drcUpdateChannel (
- HANDLE_SBR_DRC_CHANNEL hDrcData );
-
-void sbrDecoder_drcApplySlot (
- HANDLE_SBR_DRC_CHANNEL hDrcData,
- FIXP_DBL *qmfRealSlot,
- FIXP_DBL *qmfImagSlot,
- int col,
- int numQmfSubSamples,
- int maxShift );
-
-void sbrDecoder_drcApply (
- HANDLE_SBR_DRC_CHANNEL hDrcData,
- FIXP_DBL **QmfBufferReal,
- FIXP_DBL **QmfBufferImag,
- int numQmfSubSamples,
- int *scaleFactor );
-
-
-#endif /* _SBRDEC_DRC_H_ */
diff --git a/libSBRdec/src/sbrdec_freq_sca.cpp b/libSBRdec/src/sbrdec_freq_sca.cpp
deleted file mode 100644
index 8adfbb1..0000000
--- a/libSBRdec/src/sbrdec_freq_sca.cpp
+++ /dev/null
@@ -1,812 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Frequency scale calculation
-*/
-
-#include "sbrdec_freq_sca.h"
-
-#include "transcendent.h"
-#include "sbr_rom.h"
-#include "env_extr.h"
-
-#include "genericStds.h" /* need log() for debug-code only */
-
-#define MAX_OCTAVE 29
-#define MAX_SECOND_REGION 50
-
-
-static int numberOfBands(FIXP_SGL bpo_div16, int start, int stop, int warpFlag);
-static void CalcBands(UCHAR * diff, UCHAR start, UCHAR stop, UCHAR num_bands);
-static SBR_ERROR modifyBands(UCHAR max_band, UCHAR * diff, UCHAR length);
-static void cumSum(UCHAR start_value, UCHAR* diff, UCHAR length, UCHAR *start_adress);
-
-
-
-/*!
- \brief Retrieve QMF-band where the SBR range starts
-
- Convert startFreq which was read from the bitstream into a
- QMF-channel number.
-
- \return Number of start band
-*/
-static UCHAR
-getStartBand(UINT fs, /*!< Output sampling frequency */
- UCHAR startFreq, /*!< Index to table of possible start bands */
- UINT headerDataFlags) /*!< Info to SBR mode */
-{
- INT band;
- UINT fsMapped;
-
- fsMapped = fs;
-
- switch (fsMapped) {
- case 96000:
- case 88200:
- band = FDK_sbrDecoder_sbr_start_freq_88[startFreq];
- break;
- case 64000:
- band = FDK_sbrDecoder_sbr_start_freq_64[startFreq];
- break;
- case 48000:
- band = FDK_sbrDecoder_sbr_start_freq_48[startFreq];
- break;
- case 44100:
- band = FDK_sbrDecoder_sbr_start_freq_44[startFreq];
- break;
- case 32000:
- band = FDK_sbrDecoder_sbr_start_freq_32[startFreq];
- break;
- case 24000:
- band = FDK_sbrDecoder_sbr_start_freq_24[startFreq];
- break;
- case 22050:
- band = FDK_sbrDecoder_sbr_start_freq_22[startFreq];
- break;
- case 16000:
- band = FDK_sbrDecoder_sbr_start_freq_16[startFreq];
- break;
- default:
- band = 255;
- }
-
- return band;
-}
-
-
-/*!
- \brief Retrieve QMF-band where the SBR range starts
-
- Convert startFreq which was read from the bitstream into a
- QMF-channel number.
-
- \return Number of start band
-*/
-static UCHAR
-getStopBand(UINT fs, /*!< Output sampling frequency */
- UCHAR stopFreq, /*!< Index to table of possible start bands */
- UINT headerDataFlags, /*!< Info to SBR mode */
- UCHAR k0) /*!< Start freq index */
-{
- UCHAR k2;
-
- if (stopFreq < 14) {
- INT stopMin;
- UCHAR diff_tot[MAX_OCTAVE + MAX_SECOND_REGION];
- UCHAR *diff0 = diff_tot;
- UCHAR *diff1 = diff_tot+MAX_OCTAVE;
-
- if (fs < 32000) {
- stopMin = (((2*6000*2*(64)) / fs) + 1) >> 1;
- }
- else {
- if (fs < 64000) {
- stopMin = (((2*8000*2*(64)) / fs) + 1) >> 1;
- }
- else {
- stopMin = (((2*10000*2*(64)) / fs) + 1) >> 1;
- }
- }
-
- /*
- Choose a stop band between k1 and 64 depending on stopFreq (0..13),
- based on a logarithmic scale.
- The vectors diff0 and diff1 are used temporarily here.
- */
- CalcBands( diff0, stopMin, 64, 13);
- shellsort( diff0, 13);
- cumSum(stopMin, diff0, 13, diff1);
- k2 = diff1[stopFreq];
- }
- else if (stopFreq==14)
- k2 = 2*k0;
- else
- k2 = 3*k0;
-
- /* Limit to Nyquist */
- if (k2 > (64))
- k2 = (64);
-
-
- /* Range checks */
- /* 1 <= difference <= 48; 1 <= fs <= 96000 */
- if ( ((k2 - k0) > MAX_FREQ_COEFFS) || (k2 <= k0) ) {
- return 255;
- }
-
- if (headerDataFlags & (SBRDEC_SYNTAX_USAC|SBRDEC_SYNTAX_RSVD50)) {
- /* 1 <= difference <= 35; 42000 <= fs <= 96000 */
- if ( (fs >= 42000) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS44100 ) ) {
- return 255;
- }
- /* 1 <= difference <= 32; 46009 <= fs <= 96000 */
- if ( (fs >= 46009) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS48000 ) ) {
- return 255;
- }
- }
- else {
- /* 1 <= difference <= 35; fs == 44100 */
- if ( (fs == 44100) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS44100 ) ) {
- return 255;
- }
- /* 1 <= difference <= 32; 48000 <= fs <= 96000 */
- if ( (fs >= 48000) && ( (k2 - k0) > MAX_FREQ_COEFFS_FS48000 ) ) {
- return 255;
- }
- }
-
- return k2;
-}
-
-
-/*!
- \brief Generates master frequency tables
-
- Frequency tables are calculated according to the selected domain
- (linear/logarithmic) and granularity.
- IEC 14496-3 4.6.18.3.2.1
-
- \return errorCode, 0 if successful
-*/
-SBR_ERROR
-sbrdecUpdateFreqScale(UCHAR * v_k_master, /*!< Master table to be created */
- UCHAR *numMaster, /*!< Number of entries in master table */
- UINT fs, /*!< SBR working sampling rate */
- HANDLE_SBR_HEADER_DATA hHeaderData, /*!< Control data from bitstream */
- UINT flags)
-{
- FIXP_SGL bpo_div16; /* bands_per_octave divided by 16 */
- INT dk=0;
-
- /* Internal variables */
- UCHAR k0, k2, i;
- UCHAR num_bands0 = 0;
- UCHAR num_bands1 = 0;
- UCHAR diff_tot[MAX_OCTAVE + MAX_SECOND_REGION];
- UCHAR *diff0 = diff_tot;
- UCHAR *diff1 = diff_tot+MAX_OCTAVE;
- INT k2_achived;
- INT k2_diff;
- INT incr=0;
-
- /*
- Determine start band
- */
- k0 = getStartBand(fs, hHeaderData->bs_data.startFreq, flags);
- if (k0 == 255) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- /*
- Determine stop band
- */
- k2 = getStopBand(fs, hHeaderData->bs_data.stopFreq, flags, k0);
- if (k2 == 255) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- if(hHeaderData->bs_data.freqScale>0) { /* Bark */
- INT k1;
-
- if(hHeaderData->bs_data.freqScale==1) {
- bpo_div16 = FL2FXCONST_SGL(12.0f/16.0f);
- }
- else if(hHeaderData->bs_data.freqScale==2) {
- bpo_div16 = FL2FXCONST_SGL(10.0f/16.0f);
- }
- else {
- bpo_div16 = FL2FXCONST_SGL(8.0f/16.0f);
- }
-
-
- if( 1000 * k2 > 2245 * k0 ) { /* Two or more regions */
- k1 = 2*k0;
-
- num_bands0 = numberOfBands(bpo_div16, k0, k1, 0);
- num_bands1 = numberOfBands(bpo_div16, k1, k2, hHeaderData->bs_data.alterScale );
- if ( num_bands0 < 1) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
- if ( num_bands1 < 1 ) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- CalcBands(diff0, k0, k1, num_bands0);
- shellsort( diff0, num_bands0);
- if (diff0[0] == 0) {
-#ifdef DEBUG_TOOLS
-#endif
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- cumSum(k0, diff0, num_bands0, v_k_master);
-
- CalcBands(diff1, k1, k2, num_bands1);
- shellsort( diff1, num_bands1);
- if(diff0[num_bands0-1] > diff1[0]) {
- SBR_ERROR err;
-
- err = modifyBands(diff0[num_bands0-1],diff1, num_bands1);
- if (err)
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- /* Add 2nd region */
- cumSum(k1, diff1, num_bands1, &v_k_master[num_bands0]);
- *numMaster = num_bands0 + num_bands1; /* Output nr of bands */
-
- }
- else { /* Only one region */
- k1=k2;
-
- num_bands0 = numberOfBands(bpo_div16, k0, k1, 0);
- if ( num_bands0 < 1) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
- CalcBands(diff0, k0, k1, num_bands0);
- shellsort(diff0, num_bands0);
- if (diff0[0] == 0) {
-#ifdef DEBUG_TOOLS
-#endif
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- cumSum(k0, diff0, num_bands0, v_k_master);
- *numMaster = num_bands0; /* Output nr of bands */
-
- }
- }
- else { /* Linear mode */
- if (hHeaderData->bs_data.alterScale==0) {
- dk = 1;
- /* FLOOR to get to few number of bands (next lower even number) */
- num_bands0 = (k2 - k0) & 254;
- } else {
- dk = 2;
- num_bands0 = ( ((k2 - k0) >> 1) + 1 ) & 254; /* ROUND to the closest fit */
- }
-
- if (num_bands0 < 1) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- /* We must return already here because 'i' can become negative below. */
- }
-
- k2_achived = k0 + num_bands0*dk;
- k2_diff = k2 - k2_achived;
-
- for(i=0;i<num_bands0;i++)
- diff_tot[i] = dk;
-
- /* If linear scale wasn't achieved */
- /* and we got too wide SBR area */
- if (k2_diff < 0) {
- incr = 1;
- i = 0;
- }
-
- /* If linear scale wasn't achieved */
- /* and we got too small SBR area */
- if (k2_diff > 0) {
- incr = -1;
- i = num_bands0-1;
- }
-
- /* Adjust diff vector to get sepc. SBR range */
- while (k2_diff != 0) {
- diff_tot[i] = diff_tot[i] - incr;
- i = i + incr;
- k2_diff = k2_diff + incr;
- }
-
- cumSum(k0, diff_tot, num_bands0, v_k_master);/* cumsum */
- *numMaster = num_bands0; /* Output nr of bands */
- }
-
- if (*numMaster < 1) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
-
- /*
- Print out the calculated table
- */
-
- return SBRDEC_OK;
-}
-
-
-/*!
- \brief Calculate frequency ratio of one SBR band
-
- All SBR bands should span a constant frequency range in the logarithmic
- domain. This function calculates the ratio of any SBR band's upper and lower
- frequency.
-
- \return num_band-th root of k_start/k_stop
-*/
-static FIXP_SGL calcFactorPerBand(int k_start, int k_stop, int num_bands)
-{
-/* Scaled bandfactor and step 1 bit right to avoid overflow
- * use double data type */
- FIXP_DBL bandfactor = FL2FXCONST_DBL(0.25f); /* Start value */
- FIXP_DBL step = FL2FXCONST_DBL(0.125f); /* Initial increment for factor */
-
- int direction = 1;
-
-/* Because saturation can't be done in INT IIS,
- * changed start and stop data type from FIXP_SGL to FIXP_DBL */
- FIXP_DBL start = k_start << (DFRACT_BITS-8);
- FIXP_DBL stop = k_stop << (DFRACT_BITS-8);
-
- FIXP_DBL temp;
-
- int j, i=0;
-
- while ( step > FL2FXCONST_DBL(0.0f)) {
- i++;
- temp = stop;
-
- /* Calculate temp^num_bands: */
- for (j=0; j<num_bands; j++)
- //temp = fMult(temp,bandfactor);
- temp = fMultDiv2(temp,bandfactor)<<2;
-
- if (temp<start) { /* Factor too strong, make it weaker */
- if (direction == 0)
- /* Halfen step. Right shift is not done as fract because otherwise the
- lowest bit cannot be cleared due to rounding */
- step = (FIXP_DBL)((LONG)step >> 1);
- direction = 1;
- bandfactor = bandfactor + step;
- }
- else { /* Factor is too weak: make it stronger */
- if (direction == 1)
- step = (FIXP_DBL)((LONG)step >> 1);
- direction = 0;
- bandfactor = bandfactor - step;
- }
-
- if (i>100) {
- step = FL2FXCONST_DBL(0.0f);
- }
- }
- return FX_DBL2FX_SGL(bandfactor<<1);
-}
-
-
-/*!
- \brief Calculate number of SBR bands between start and stop band
-
- Given the number of bands per octave, this function calculates how many
- bands fit in the given frequency range.
- When the warpFlag is set, the 'band density' is decreased by a factor
- of 1/1.3
-
- \return number of bands
-*/
-static int
-numberOfBands(FIXP_SGL bpo_div16, /*!< Input: number of bands per octave divided by 16 */
- int start, /*!< First QMF band of SBR frequency range */
- int stop, /*!< Last QMF band of SBR frequency range + 1 */
- int warpFlag) /*!< Stretching flag */
-{
- FIXP_SGL num_bands_div128;
- int num_bands;
-
- num_bands_div128 = FX_DBL2FX_SGL(fMult(FDK_getNumOctavesDiv8(start,stop),bpo_div16));
-
- if (warpFlag) {
- /* Apply the warp factor of 1.3 to get wider bands. We use a value
- of 32768/25200 instead of the exact value to avoid critical cases
- of rounding.
- */
- num_bands_div128 = FX_DBL2FX_SGL(fMult(num_bands_div128, FL2FXCONST_SGL(25200.0/32768.0)));
- }
-
- /* add scaled 1 for rounding to even numbers: */
- num_bands_div128 = num_bands_div128 + FL2FXCONST_SGL( 1.0f/128.0f );
- /* scale back to right aligned integer and double the value: */
- num_bands = 2 * ((LONG)num_bands_div128 >> (FRACT_BITS - 7));
-
- return(num_bands);
-}
-
-
-/*!
- \brief Calculate width of SBR bands
-
- Given the desired number of bands within the SBR frequency range,
- this function calculates the width of each SBR band in QMF channels.
- The bands get wider from start to stop (bark scale).
-*/
-static void
-CalcBands(UCHAR * diff, /*!< Vector of widths to be calculated */
- UCHAR start, /*!< Lower end of subband range */
- UCHAR stop, /*!< Upper end of subband range */
- UCHAR num_bands) /*!< Desired number of bands */
-{
- int i;
- int previous;
- int current;
- FIXP_SGL exact, temp;
- FIXP_SGL bandfactor = calcFactorPerBand(start, stop, num_bands);
-
- previous = stop; /* Start with highest QMF channel */
- exact = (FIXP_SGL)(stop << (FRACT_BITS-8)); /* Shift left to gain some accuracy */
-
- for(i=num_bands-1; i>=0; i--) {
- /* Calculate border of next lower sbr band */
- exact = FX_DBL2FX_SGL(fMult(exact,bandfactor));
-
- /* Add scaled 0.5 for rounding:
- We use a value 128/256 instead of 0.5 to avoid some critical cases of rounding. */
- temp = exact + FL2FXCONST_SGL(128.0/32768.0);
-
- /* scale back to right alinged integer: */
- current = (LONG)temp >> (FRACT_BITS-8);
-
- /* Save width of band i */
- diff[i] = previous - current;
- previous = current;
- }
-}
-
-
-/*!
- \brief Calculate cumulated sum vector from delta vector
-*/
-static void
-cumSum(UCHAR start_value, UCHAR* diff, UCHAR length, UCHAR *start_adress)
-{
- int i;
- start_adress[0]=start_value;
- for(i=1; i<=length; i++)
- start_adress[i] = start_adress[i-1] + diff[i-1];
-}
-
-
-/*!
- \brief Adapt width of frequency bands in the second region
-
- If SBR spans more than 2 octaves, the upper part of a bark-frequency-scale
- is calculated separately. This function tries to avoid that the second region
- starts with a band smaller than the highest band of the first region.
-*/
-static SBR_ERROR
-modifyBands(UCHAR max_band_previous, UCHAR * diff, UCHAR length)
-{
- int change = max_band_previous - diff[0];
-
- /* Limit the change so that the last band cannot get narrower than the first one */
- if ( change > (diff[length-1]-diff[0])>>1 )
- change = (diff[length-1]-diff[0])>>1;
-
- diff[0] += change;
- diff[length-1] -= change;
- shellsort(diff, length);
-
- return SBRDEC_OK;
-}
-
-
-/*!
- \brief Update high resolution frequency band table
-*/
-static void
-sbrdecUpdateHiRes(UCHAR * h_hires,
- UCHAR * num_hires,
- UCHAR * v_k_master,
- UCHAR num_bands,
- UCHAR xover_band)
-{
- UCHAR i;
-
- *num_hires = num_bands-xover_band;
-
- for(i=xover_band; i<=num_bands; i++) {
- h_hires[i-xover_band] = v_k_master[i];
- }
-}
-
-
-/*!
- \brief Build low resolution table out of high resolution table
-*/
-static void
-sbrdecUpdateLoRes(UCHAR * h_lores,
- UCHAR * num_lores,
- UCHAR * h_hires,
- UCHAR num_hires)
-{
- UCHAR i;
-
- if( (num_hires & 1) == 0) {
- /* If even number of hires bands */
- *num_lores = num_hires >> 1;
- /* Use every second lores=hires[0,2,4...] */
- for(i=0; i<=*num_lores; i++)
- h_lores[i] = h_hires[i*2];
- }
- else {
- /* Odd number of hires, which means xover is odd */
- *num_lores = (num_hires+1) >> 1;
- /* Use lores=hires[0,1,3,5 ...] */
- h_lores[0] = h_hires[0];
- for(i=1; i<=*num_lores; i++) {
- h_lores[i] = h_hires[i*2-1];
- }
- }
-}
-
-
-/*!
- \brief Derive a low-resolution frequency-table from the master frequency table
-*/
-void
-sbrdecDownSampleLoRes(UCHAR *v_result,
- UCHAR num_result,
- UCHAR *freqBandTableRef,
- UCHAR num_Ref)
-{
- int step;
- int i,j;
- int org_length,result_length;
- int v_index[MAX_FREQ_COEFFS>>1];
-
- /* init */
- org_length = num_Ref;
- result_length = num_result;
-
- v_index[0] = 0; /* Always use left border */
- i=0;
- while(org_length > 0) {
- /* Create downsample vector */
- i++;
- step = org_length / result_length;
- org_length = org_length - step;
- result_length--;
- v_index[i] = v_index[i-1] + step;
- }
-
- for(j=0;j<=i;j++) {
- /* Use downsample vector to index LoResolution vector */
- v_result[j]=freqBandTableRef[v_index[j]];
- }
-
-}
-
-
-/*!
- \brief Sorting routine
-*/
-void shellsort(UCHAR *in, UCHAR n)
-{
-
- int i, j, v, w;
- int inc = 1;
-
- do
- inc = 3 * inc + 1;
- while (inc <= n);
-
- do {
- inc = inc / 3;
- for (i = inc; i < n; i++) {
- v = in[i];
- j = i;
- while ((w=in[j-inc]) > v) {
- in[j] = w;
- j -= inc;
- if (j < inc)
- break;
- }
- in[j] = v;
- }
- } while (inc > 1);
-
-}
-
-
-
-/*!
- \brief Reset frequency band tables
- \return errorCode, 0 if successful
-*/
-SBR_ERROR
-resetFreqBandTables(HANDLE_SBR_HEADER_DATA hHeaderData, const UINT flags)
-{
- SBR_ERROR err = SBRDEC_OK;
- int k2,kx, lsb, usb;
- int intTemp;
- UCHAR nBandsLo, nBandsHi;
- HANDLE_FREQ_BAND_DATA hFreq = &hHeaderData->freqBandData;
-
- /* Calculate master frequency function */
- err = sbrdecUpdateFreqScale(hFreq->v_k_master,
- &hFreq->numMaster,
- hHeaderData->sbrProcSmplRate,
- hHeaderData,
- flags);
-
- if ( err || (hHeaderData->bs_info.xover_band > hFreq->numMaster) ) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- /* Derive Hiresolution from master frequency function */
- sbrdecUpdateHiRes(hFreq->freqBandTable[1], &nBandsHi, hFreq->v_k_master, hFreq->numMaster, hHeaderData->bs_info.xover_band );
- /* Derive Loresolution from Hiresolution */
- sbrdecUpdateLoRes(hFreq->freqBandTable[0], &nBandsLo, hFreq->freqBandTable[1], nBandsHi);
-
-
- hFreq->nSfb[0] = nBandsLo;
- hFreq->nSfb[1] = nBandsHi;
-
- /* Check index to freqBandTable[0] */
- if ( !(nBandsLo > 0) || (nBandsLo > (MAX_FREQ_COEFFS>>1)) ) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- lsb = hFreq->freqBandTable[0][0];
- usb = hFreq->freqBandTable[0][nBandsLo];
-
- /* Additional check for lsb */
- if ( (lsb > (32)) || (lsb >= usb) ) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
-
- /* Calculate number of noise bands */
-
- k2 = hFreq->freqBandTable[1][nBandsHi];
- kx = hFreq->freqBandTable[1][0];
-
- if (hHeaderData->bs_data.noise_bands == 0)
- {
- hFreq->nNfb = 1;
- }
- else /* Calculate no of noise bands 1,2 or 3 bands/octave */
- {
- /* Fetch number of octaves divided by 32 */
- intTemp = (LONG)FDK_getNumOctavesDiv8(kx,k2) >> 2;
-
- /* Integer-Multiplication with number of bands: */
- intTemp = intTemp * hHeaderData->bs_data.noise_bands;
-
- /* Add scaled 0.5 for rounding: */
- intTemp = intTemp + (LONG)FL2FXCONST_SGL(0.5f/32.0f);
-
- /* Convert to right-aligned integer: */
- intTemp = intTemp >> (FRACT_BITS - 1 /*sign*/ - 5 /* rescale */);
-
- /* Compare with float calculation */
- FDK_ASSERT( intTemp == (int)((hHeaderData->bs_data.noise_bands * FDKlog( (float)k2/kx) / (float)(FDKlog(2.0)))+0.5) );
-
- if( intTemp==0)
- intTemp=1;
-
- hFreq->nNfb = intTemp;
- }
-
- hFreq->nInvfBands = hFreq->nNfb;
-
- if( hFreq->nNfb > MAX_NOISE_COEFFS ) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- /* Get noise bands */
- sbrdecDownSampleLoRes(hFreq->freqBandTableNoise,
- hFreq->nNfb,
- hFreq->freqBandTable[0],
- nBandsLo);
-
-
-
-
- hFreq->lowSubband = lsb;
- hFreq->highSubband = usb;
-
- return SBRDEC_OK;
-}
diff --git a/libSBRdec/src/sbrdec_freq_sca.h b/libSBRdec/src/sbrdec_freq_sca.h
deleted file mode 100644
index cfe4f0e..0000000
--- a/libSBRdec/src/sbrdec_freq_sca.h
+++ /dev/null
@@ -1,107 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief Frequency scale prototypes
-*/
-#ifndef __FREQ_SCA_H
-#define __FREQ_SCA_H
-
-#include "sbrdecoder.h"
-#include "env_extr.h"
-
-int
-sbrdecUpdateFreqScale(UCHAR * v_k_master,
- UCHAR *numMaster,
- HANDLE_SBR_HEADER_DATA headerData);
-
-void sbrdecDownSampleLoRes(UCHAR *v_result, UCHAR num_result,
- UCHAR *freqBandTableRef, UCHAR num_Ref);
-
-void shellsort(UCHAR *in, UCHAR n);
-
-SBR_ERROR
-resetFreqBandTables(HANDLE_SBR_HEADER_DATA hHeaderData, const UINT flags);
-
-#endif
diff --git a/libSBRdec/src/sbrdecoder.cpp b/libSBRdec/src/sbrdecoder.cpp
deleted file mode 100644
index 26b2ea2..0000000
--- a/libSBRdec/src/sbrdecoder.cpp
+++ /dev/null
@@ -1,1546 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief SBR decoder frontend
- This module provides a frontend to the SBR decoder. The function openSBR() is called for
- initialization. The function sbrDecoder_Apply() is called for each frame. sbr_Apply() will call the
- required functions to decode the raw SBR data (provided by env_extr.cpp), to decode the envelope data and noise floor levels [decodeSbrData()],
- and to finally apply SBR to the current frame [sbr_dec()].
-
- \sa sbrDecoder_Apply(), \ref documentationOverview
-*/
-
-/*!
- \page documentationOverview Overview of important information resources and source code documentation
-
- The primary source code documentation is based on generated and cross-referenced HTML files using
- <a HREF="http://www.doxygen.org">doxygen</a>. As part of this documentation
- you can find more extensive descriptions about key concepts and algorithms at the following locations:
-
- <h2>Programming</h2>
-
- \li Buffer management: sbrDecoder_Apply() and sbr_dec()
- \li Internal scale factors to maximize SNR on fixed point processors: #QMF_SCALE_FACTOR
- \li Special mantissa-exponent format: Created in requantizeEnvelopeData() and used in calculateSbrEnvelope()
-
- <h2>Algorithmic details</h2>
- \li About the SBR data format: \ref SBR_HEADER_ELEMENT and \ref SBR_STANDARD_ELEMENT
- \li Details about the bitstream decoder: env_extr.cpp
- \li Details about the QMF filterbank and the provided polyphase implementation: qmf_dec.cpp
- \li Details about the transposer: lpp_tran.cpp
- \li Details about the envelope adjuster: env_calc.cpp
-
-*/
-
-#include "sbrdecoder.h"
-
-#include "FDK_bitstream.h"
-
-#include "sbrdec_freq_sca.h"
-#include "env_extr.h"
-#include "sbr_dec.h"
-#include "env_dec.h"
-#include "sbr_crc.h"
-#include "sbr_ram.h"
-#include "sbr_rom.h"
-#include "lpp_tran.h"
-#include "transcendent.h"
-
-
-#include "sbrdec_drc.h"
-
-#include "psbitdec.h"
-
-
-/* Decoder library info */
-#define SBRDECODER_LIB_VL0 2
-#define SBRDECODER_LIB_VL1 2
-#define SBRDECODER_LIB_VL2 3
-#define SBRDECODER_LIB_TITLE "SBR Decoder"
-#define SBRDECODER_LIB_BUILD_DATE __DATE__
-#define SBRDECODER_LIB_BUILD_TIME __TIME__
-
-
-
-
-static UCHAR getHeaderSlot( UCHAR currentSlot, UCHAR hdrSlotUsage[(1)+1] )
-{
- UINT occupied = 0;
- int s;
- UCHAR slot = hdrSlotUsage[currentSlot];
-
- FDK_ASSERT((1)+1 < 32);
-
- for (s = 0; s < (1)+1; s++) {
- if ( (hdrSlotUsage[s] == slot)
- && (s != slot) ) {
- occupied = 1;
- break;
- }
- }
-
- if (occupied) {
- occupied = 0;
-
- for (s = 0; s < (1)+1; s++) {
- occupied |= 1 << hdrSlotUsage[s];
- }
- for (s = 0; s < (1)+1; s++) {
- if ( !(occupied & 0x1) ) {
- slot = s;
- break;
- }
- occupied >>= 1;
- }
- }
-
- return slot;
-}
-
-static void copySbrHeader( HANDLE_SBR_HEADER_DATA hDst, const HANDLE_SBR_HEADER_DATA hSrc )
-{
- /* copy the whole header memory (including pointers) */
- FDKmemcpy( hDst, hSrc, sizeof(SBR_HEADER_DATA) );
-
- /* update pointers */
- hDst->freqBandData.freqBandTable[0] = hDst->freqBandData.freqBandTableLo;
- hDst->freqBandData.freqBandTable[1] = hDst->freqBandData.freqBandTableHi;
-}
-
-
-/*!
- \brief Reset SBR decoder.
-
- Reset should only be called if SBR has been sucessfully detected by
- an appropriate checkForPayload() function.
-
- \return Error code.
-*/
-static
-SBR_ERROR sbrDecoder_ResetElement (
- HANDLE_SBRDECODER self,
- int sampleRateIn,
- int sampleRateOut,
- int samplesPerFrame,
- const MP4_ELEMENT_ID elementID,
- const int elementIndex,
- const int overlap
- )
-{
- SBR_ERROR sbrError = SBRDEC_OK;
- HANDLE_SBR_HEADER_DATA hSbrHeader;
- UINT qmfFlags = 0;
-
- int i, synDownsampleFac;
-
- /* Check in/out samplerates */
- if ( sampleRateIn < 6400
- || sampleRateIn > 48000
- )
- {
- sbrError = SBRDEC_UNSUPPORTED_CONFIG;
- goto bail;
- }
-
- if ( sampleRateOut > 96000 )
- {
- sbrError = SBRDEC_UNSUPPORTED_CONFIG;
- goto bail;
- }
-
- /* Set QMF mode flags */
- if (self->flags & SBRDEC_LOW_POWER)
- qmfFlags |= QMF_FLAG_LP;
-
- if (self->coreCodec == AOT_ER_AAC_ELD) {
- if (self->flags & SBRDEC_LD_MPS_QMF) {
- qmfFlags |= QMF_FLAG_MPSLDFB;
- } else {
- qmfFlags |= QMF_FLAG_CLDFB;
- }
- }
-
- /* Set downsampling factor for synthesis filter bank */
- if (sampleRateOut == 0)
- {
- /* no single rate mode */
- sampleRateOut = sampleRateIn<<1; /* In case of implicit signalling, assume dual rate SBR */
- }
-
- if ( sampleRateIn == sampleRateOut ) {
- synDownsampleFac = 2;
- } else {
- synDownsampleFac = 1;
- }
-
- self->synDownsampleFac = synDownsampleFac;
- self->sampleRateOut = sampleRateOut;
-
- {
- int i;
-
- for (i = 0; i < (1)+1; i++)
- {
- hSbrHeader = &(self->sbrHeader[elementIndex][i]);
-
- /* init a default header such that we can at least do upsampling later */
- sbrError = initHeaderData(
- hSbrHeader,
- sampleRateIn,
- sampleRateOut,
- samplesPerFrame,
- self->flags
- );
- }
- }
-
- if (sbrError != SBRDEC_OK) {
- goto bail;
- }
-
- /* Init SBR channels going to be assigned to a SBR element */
- {
- int ch;
-
- for (ch=0; ch<self->pSbrElement[elementIndex]->nChannels; ch++)
- {
- /* and create sbrDec */
- sbrError = createSbrDec (self->pSbrElement[elementIndex]->pSbrChannel[ch],
- hSbrHeader,
- &self->pSbrElement[elementIndex]->transposerSettings,
- synDownsampleFac,
- qmfFlags,
- self->flags,
- overlap,
- ch );
-
- if (sbrError != SBRDEC_OK) {
- goto bail;
- }
- }
- }
-
- //FDKmemclear(sbr_OverlapBuffer, sizeof(sbr_OverlapBuffer));
-
- if (self->numSbrElements == 1) {
- switch ( self->coreCodec ) {
- case AOT_AAC_LC:
- case AOT_SBR:
- case AOT_PS:
- case AOT_ER_AAC_SCAL:
- case AOT_DRM_AAC:
- case AOT_DRM_SURROUND:
- if (CreatePsDec ( &self->hParametricStereoDec, samplesPerFrame )) {
- sbrError = SBRDEC_CREATE_ERROR;
- goto bail;
- }
- break;
- default:
- break;
- }
- }
-
- /* Init frame delay slot handling */
- self->pSbrElement[elementIndex]->useFrameSlot = 0;
- for (i = 0; i < ((1)+1); i++) {
- self->pSbrElement[elementIndex]->useHeaderSlot[i] = i;
- }
-
-bail:
-
- return sbrError;
-}
-
-
-SBR_ERROR sbrDecoder_Open ( HANDLE_SBRDECODER * pSelf )
-{
- HANDLE_SBRDECODER self = NULL;
- SBR_ERROR sbrError = SBRDEC_OK;
-
- /* Get memory for this instance */
- self = GetRam_SbrDecoder();
- if (self == NULL) {
- sbrError = SBRDEC_MEM_ALLOC_FAILED;
- goto bail;
- }
-
- self->workBuffer1 = GetRam_SbrDecWorkBuffer1();
- self->workBuffer2 = GetRam_SbrDecWorkBuffer2();
-
- if ( self->workBuffer1 == NULL
- || self->workBuffer2 == NULL )
- {
- sbrError = SBRDEC_MEM_ALLOC_FAILED;
- goto bail;
- }
-
- /*
- Already zero because of calloc
- self->numSbrElements = 0;
- self->numSbrChannels = 0;
- self->codecFrameSize = 0;
- */
-
- self->numDelayFrames = (1); /* set to the max value by default */
-
- *pSelf = self;
-
-bail:
- return sbrError;
-}
-
-/**
- * \brief determine if the given core codec AOT can be processed or not.
- * \param coreCodec core codec audio object type.
- * \return 1 if SBR can be processed, 0 if SBR cannot be processed/applied.
- */
-static
-int sbrDecoder_isCoreCodecValid(AUDIO_OBJECT_TYPE coreCodec)
-{
- switch (coreCodec) {
- case AOT_AAC_LC:
- case AOT_SBR:
- case AOT_PS:
- case AOT_ER_AAC_SCAL:
- case AOT_ER_AAC_ELD:
- return 1;
- default:
- return 0;
- }
-}
-
-static
-void sbrDecoder_DestroyElement (
- HANDLE_SBRDECODER self,
- const int elementIndex
- )
-{
- if (self->pSbrElement[elementIndex] != NULL) {
- int ch;
-
- for (ch=0; ch<SBRDEC_MAX_CH_PER_ELEMENT; ch++) {
- if (self->pSbrElement[elementIndex]->pSbrChannel[ch] != NULL) {
- deleteSbrDec( self->pSbrElement[elementIndex]->pSbrChannel[ch] );
- FreeRam_SbrDecChannel( &self->pSbrElement[elementIndex]->pSbrChannel[ch] );
- self->numSbrChannels -= 1;
- }
- }
- FreeRam_SbrDecElement( &self->pSbrElement[elementIndex] );
- self->numSbrElements -= 1;
- }
-}
-
-
-SBR_ERROR sbrDecoder_InitElement (
- HANDLE_SBRDECODER self,
- const int sampleRateIn,
- const int sampleRateOut,
- const int samplesPerFrame,
- const AUDIO_OBJECT_TYPE coreCodec,
- const MP4_ELEMENT_ID elementID,
- const int elementIndex
- )
-{
- SBR_ERROR sbrError = SBRDEC_OK;
- int chCnt=0;
- int nSbrElementsStart = self->numSbrElements;
-
- /* Check core codec AOT */
- if (! sbrDecoder_isCoreCodecValid(coreCodec) || elementIndex >= (4)) {
- sbrError = SBRDEC_UNSUPPORTED_CONFIG;
- goto bail;
- }
-
- if ( elementID != ID_SCE && elementID != ID_CPE && elementID != ID_LFE )
- {
- sbrError = SBRDEC_UNSUPPORTED_CONFIG;
- goto bail;
- }
-
- if ( self->sampleRateIn == sampleRateIn
- && self->codecFrameSize == samplesPerFrame
- && self->coreCodec == coreCodec
- && self->pSbrElement[elementIndex] != NULL
- && self->pSbrElement[elementIndex]->elementID == elementID
- )
- {
- /* Nothing to do */
- return SBRDEC_OK;
- }
-
- self->sampleRateIn = sampleRateIn;
- self->codecFrameSize = samplesPerFrame;
- self->coreCodec = coreCodec;
-
- self->flags = 0;
- self->flags |= (coreCodec == AOT_ER_AAC_ELD) ? SBRDEC_ELD_GRID : 0;
-
- /* Init SBR elements */
- {
- int elChannels, ch;
-
- if (self->pSbrElement[elementIndex] == NULL) {
- self->pSbrElement[elementIndex] = GetRam_SbrDecElement(elementIndex);
- if (self->pSbrElement[elementIndex] == NULL) {
- sbrError = SBRDEC_MEM_ALLOC_FAILED;
- goto bail;
- }
- self->numSbrElements ++;
- } else {
- self->numSbrChannels -= self->pSbrElement[elementIndex]->nChannels;
- }
-
- /* Save element ID for sanity checks and to have a fallback for concealment. */
- self->pSbrElement[elementIndex]->elementID = elementID;
-
- /* Determine amount of channels for this element */
- switch (elementID) {
- case ID_NONE:
- case ID_CPE: elChannels=2;
- break;
- case ID_LFE:
- case ID_SCE: elChannels=1;
- break;
- default: elChannels=0;
- break;
- }
-
- /* Handle case of Parametric Stereo */
- if ( elementIndex == 0 && elementID == ID_SCE ) {
- switch (coreCodec) {
- case AOT_AAC_LC:
- case AOT_SBR:
- case AOT_PS:
- case AOT_ER_AAC_SCAL:
- case AOT_DRM_AAC:
- case AOT_DRM_SURROUND:
- elChannels = 2;
- break;
- default:
- break;
- }
- }
-
- self->pSbrElement[elementIndex]->nChannels = elChannels;
-
- for (ch=0; ch<elChannels; ch++)
- {
- if (self->pSbrElement[elementIndex]->pSbrChannel[ch] == NULL) {
- self->pSbrElement[elementIndex]->pSbrChannel[ch] = GetRam_SbrDecChannel(chCnt);
- if (self->pSbrElement[elementIndex]->pSbrChannel[ch] == NULL) {
- sbrError = SBRDEC_MEM_ALLOC_FAILED;
- goto bail;
- }
- }
- self->numSbrChannels ++;
-
- sbrDecoder_drcInitChannel( &self->pSbrElement[elementIndex]->pSbrChannel[ch]->SbrDec.sbrDrcChannel );
-
- /* Add reference pointer to workbuffers. */
- self->pSbrElement[elementIndex]->pSbrChannel[ch]->SbrDec.WorkBuffer1 = self->workBuffer1;
- self->pSbrElement[elementIndex]->pSbrChannel[ch]->SbrDec.WorkBuffer2 = self->workBuffer2;
- chCnt++;
- }
- if (elChannels == 1 && self->pSbrElement[elementIndex]->pSbrChannel[ch] != NULL) {
- deleteSbrDec( self->pSbrElement[elementIndex]->pSbrChannel[ch] );
- FreeRam_SbrDecChannel( &self->pSbrElement[elementIndex]->pSbrChannel[ch] );
- }
- }
-
- /* clear error flags for all delay slots */
- FDKmemclear(self->pSbrElement[elementIndex]->frameErrorFlag, ((1)+1)*sizeof(UCHAR));
-
- /* Initialize this instance */
- sbrError = sbrDecoder_ResetElement(
- self,
- sampleRateIn,
- sampleRateOut,
- samplesPerFrame,
- elementID,
- elementIndex,
- (coreCodec == AOT_ER_AAC_ELD) ? 0 : (6)
- );
-
-
-
-bail:
- if (sbrError != SBRDEC_OK) {
- if (nSbrElementsStart < self->numSbrElements) {
- /* Free the memory allocated for this element */
- sbrDecoder_DestroyElement( self, elementIndex );
- } else if (self->pSbrElement[elementIndex] != NULL) {
- /* Set error flag to trigger concealment */
- self->pSbrElement[elementIndex]->frameErrorFlag[self->pSbrElement[elementIndex]->useFrameSlot] = 1;
- }
- }
-
- return sbrError;
-}
-
-/**
- * \brief Apply decoded SBR header for one element.
- * \param self SBR decoder instance handle
- * \param hSbrHeader SBR header handle to be processed.
- * \param hSbrChannel pointer array to the SBR element channels corresponding to the SBR header.
- * \param headerStatus header status value returned from SBR header parser.
- * \param numElementChannels amount of channels for the SBR element whos header is to be processed.
- */
-static
-SBR_ERROR sbrDecoder_HeaderUpdate(
- HANDLE_SBRDECODER self,
- HANDLE_SBR_HEADER_DATA hSbrHeader,
- SBR_HEADER_STATUS headerStatus,
- HANDLE_SBR_CHANNEL hSbrChannel[],
- const int numElementChannels
- )
-{
- SBR_ERROR errorStatus = SBRDEC_OK;
-
- /*
- change of control data, reset decoder
- */
- errorStatus = resetFreqBandTables(hSbrHeader, self->flags);
-
- if (errorStatus == SBRDEC_OK) {
- if (hSbrHeader->syncState == UPSAMPLING && headerStatus != HEADER_RESET)
- {
- /* As the default header would limit the frequency range,
- lowSubband and highSubband must be patched. */
- hSbrHeader->freqBandData.lowSubband = hSbrHeader->numberOfAnalysisBands;
- hSbrHeader->freqBandData.highSubband = hSbrHeader->numberOfAnalysisBands;
- }
-
- /* Trigger a reset before processing this slot */
- hSbrHeader->status |= SBRDEC_HDR_STAT_RESET;
- }
-
- return errorStatus;
-}
-
-INT sbrDecoder_Header (
- HANDLE_SBRDECODER self,
- HANDLE_FDK_BITSTREAM hBs,
- const INT sampleRateIn,
- const INT sampleRateOut,
- const INT samplesPerFrame,
- const AUDIO_OBJECT_TYPE coreCodec,
- const MP4_ELEMENT_ID elementID,
- const INT elementIndex
- )
-{
- SBR_HEADER_STATUS headerStatus;
- HANDLE_SBR_HEADER_DATA hSbrHeader;
- SBR_ERROR sbrError = SBRDEC_OK;
- int headerIndex;
-
- if ( self == NULL || elementIndex > (4) )
- {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- if (! sbrDecoder_isCoreCodecValid(coreCodec)) {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
-
- sbrError = sbrDecoder_InitElement(
- self,
- sampleRateIn,
- sampleRateOut,
- samplesPerFrame,
- coreCodec,
- elementID,
- elementIndex
- );
-
- if (sbrError != SBRDEC_OK) {
- goto bail;
- }
-
- headerIndex = getHeaderSlot(self->pSbrElement[elementIndex]->useFrameSlot,
- self->pSbrElement[elementIndex]->useHeaderSlot);
- hSbrHeader = &(self->sbrHeader[elementIndex][headerIndex]);
-
- headerStatus = sbrGetHeaderData ( hSbrHeader,
- hBs,
- self->flags,
- 0);
-
-
- {
- SBR_DECODER_ELEMENT *pSbrElement;
-
- pSbrElement = self->pSbrElement[elementIndex];
-
- /* Sanity check */
- if (pSbrElement != NULL) {
- if ( (elementID == ID_CPE && pSbrElement->nChannels != 2)
- || (elementID != ID_CPE && pSbrElement->nChannels != 1) )
- {
- return SBRDEC_UNSUPPORTED_CONFIG;
- }
- if ( headerStatus == HEADER_RESET ) {
-
- sbrError = sbrDecoder_HeaderUpdate(
- self,
- hSbrHeader,
- headerStatus,
- pSbrElement->pSbrChannel,
- pSbrElement->nChannels
- );
-
- if (sbrError == SBRDEC_OK) {
- hSbrHeader->syncState = SBR_HEADER;
- hSbrHeader->status |= SBRDEC_HDR_STAT_UPDATE;
- }
- /* else {
- Since we already have overwritten the old SBR header the only way out is UPSAMPLING!
- This will be prepared in the next step.
- } */
- }
- }
- }
-bail:
- return sbrError;
-}
-
-
-SBR_ERROR sbrDecoder_SetParam (HANDLE_SBRDECODER self,
- const SBRDEC_PARAM param,
- const INT value )
-{
- SBR_ERROR errorStatus = SBRDEC_OK;
-
- /* configure the subsystems */
- switch (param)
- {
- case SBR_SYSTEM_BITSTREAM_DELAY:
- if (value < 0 || value > (1)) {
- errorStatus = SBRDEC_SET_PARAM_FAIL;
- break;
- }
- if (self == NULL) {
- errorStatus = SBRDEC_NOT_INITIALIZED;
- } else {
- self->numDelayFrames = (UCHAR)value;
- }
- break;
- case SBR_QMF_MODE:
- if (self == NULL) {
- errorStatus = SBRDEC_NOT_INITIALIZED;
- } else {
- if (value == 1) {
- self->flags |= SBRDEC_LOW_POWER;
- } else {
- self->flags &= ~SBRDEC_LOW_POWER;
- }
- }
- break;
- case SBR_LD_QMF_TIME_ALIGN:
- if (self == NULL) {
- errorStatus = SBRDEC_NOT_INITIALIZED;
- } else {
- if (value == 1) {
- self->flags |= SBRDEC_LD_MPS_QMF;
- } else {
- self->flags &= ~SBRDEC_LD_MPS_QMF;
- }
- }
- break;
- case SBR_BS_INTERRUPTION:
- {
- int elementIndex;
-
- if (self == NULL) {
- errorStatus = SBRDEC_NOT_INITIALIZED;
- break;
- }
-
- /* Loop over SBR elements */
- for (elementIndex = 0; elementIndex < self->numSbrElements; elementIndex++)
- {
- HANDLE_SBR_HEADER_DATA hSbrHeader;
- int headerIndex = getHeaderSlot(self->pSbrElement[elementIndex]->useFrameSlot,
- self->pSbrElement[elementIndex]->useHeaderSlot);
-
- hSbrHeader = &(self->sbrHeader[elementIndex][headerIndex]);
-
- /* Set sync state UPSAMPLING for the corresponding slot.
- This switches off bitstream parsing until a new header arrives. */
- hSbrHeader->syncState = UPSAMPLING;
- hSbrHeader->status |= SBRDEC_HDR_STAT_UPDATE;
- }
- }
- break;
- default:
- errorStatus = SBRDEC_SET_PARAM_FAIL;
- break;
- } /* switch(param) */
-
- return (errorStatus);
-}
-
-static
-SBRDEC_DRC_CHANNEL * sbrDecoder_drcGetChannel( const HANDLE_SBRDECODER self, const INT channel )
-{
- SBRDEC_DRC_CHANNEL *pSbrDrcChannelData = NULL;
- int elementIndex, elChanIdx=0, numCh=0;
-
- for (elementIndex = 0; (elementIndex < (4)) && (numCh <= channel); elementIndex++)
- {
- SBR_DECODER_ELEMENT *pSbrElement = self->pSbrElement[elementIndex];
- int c, elChannels;
-
- elChanIdx = 0;
- if (pSbrElement == NULL) break;
-
- /* Determine amount of channels for this element */
- switch (pSbrElement->elementID) {
- case ID_CPE: elChannels = 2;
- break;
- case ID_LFE:
- case ID_SCE: elChannels = 1;
- break;
- case ID_NONE:
- default: elChannels = 0;
- break;
- }
-
- /* Limit with actual allocated element channels */
- elChannels = FDKmin(elChannels, pSbrElement->nChannels);
-
- for (c = 0; (c < elChannels) && (numCh <= channel); c++) {
- if (pSbrElement->pSbrChannel[elChanIdx] != NULL) {
- numCh++;
- elChanIdx++;
- }
- }
- }
- elementIndex -= 1;
- elChanIdx -= 1;
-
- if (elChanIdx < 0 || elementIndex < 0) {
- return NULL;
- }
-
- if ( self->pSbrElement[elementIndex] != NULL ) {
- if ( self->pSbrElement[elementIndex]->pSbrChannel[elChanIdx] != NULL )
- {
- pSbrDrcChannelData = &self->pSbrElement[elementIndex]->pSbrChannel[elChanIdx]->SbrDec.sbrDrcChannel;
- }
- }
-
- return (pSbrDrcChannelData);
-}
-
-SBR_ERROR sbrDecoder_drcFeedChannel ( HANDLE_SBRDECODER self,
- INT ch,
- UINT numBands,
- FIXP_DBL *pNextFact_mag,
- INT nextFact_exp,
- SHORT drcInterpolationScheme,
- UCHAR winSequence,
- USHORT *pBandTop )
-{
- SBRDEC_DRC_CHANNEL *pSbrDrcChannelData = NULL;
- int band, isValidData = 0;
-
- if (self == NULL) {
- return SBRDEC_NOT_INITIALIZED;
- }
- if (ch > (6) || pNextFact_mag == NULL) {
- return SBRDEC_SET_PARAM_FAIL;
- }
-
- /* Search for gain values different to 1.0f */
- for (band = 0; band < numBands; band += 1) {
- if ( !((pNextFact_mag[band] == FL2FXCONST_DBL(0.5)) && (nextFact_exp == 1))
- && !((pNextFact_mag[band] == (FIXP_DBL)MAXVAL_DBL) && (nextFact_exp == 0)) ) {
- isValidData = 1;
- break;
- }
- }
-
- /* Find the right SBR channel */
- pSbrDrcChannelData = sbrDecoder_drcGetChannel( self, ch );
-
- if ( pSbrDrcChannelData != NULL ) {
- if ( pSbrDrcChannelData->enable || isValidData )
- { /* Activate processing only with real and valid data */
- int i;
-
- pSbrDrcChannelData->enable = 1;
- pSbrDrcChannelData->numBandsNext = numBands;
-
- pSbrDrcChannelData->winSequenceNext = winSequence;
- pSbrDrcChannelData->drcInterpolationSchemeNext = drcInterpolationScheme;
- pSbrDrcChannelData->nextFact_exp = nextFact_exp;
-
- for (i = 0; i < (int)numBands; i++) {
- pSbrDrcChannelData->bandTopNext[i] = pBandTop[i];
- pSbrDrcChannelData->nextFact_mag[i] = pNextFact_mag[i];
- }
- }
- }
-
- return SBRDEC_OK;
-}
-
-
-void sbrDecoder_drcDisable ( HANDLE_SBRDECODER self,
- INT ch )
-{
- SBRDEC_DRC_CHANNEL *pSbrDrcChannelData = NULL;
-
- if ( (self == NULL)
- || (ch > (6))
- || (self->numSbrElements == 0)
- || (self->numSbrChannels == 0) ) {
- return;
- }
-
- /* Find the right SBR channel */
- pSbrDrcChannelData = sbrDecoder_drcGetChannel( self, ch );
-
- if ( pSbrDrcChannelData != NULL ) {
- sbrDecoder_drcInitChannel( pSbrDrcChannelData );
- }
-}
-
-
-
-SBR_ERROR sbrDecoder_Parse(
- HANDLE_SBRDECODER self,
- HANDLE_FDK_BITSTREAM hBs,
- int *count,
- int bsPayLen,
- int crcFlag,
- MP4_ELEMENT_ID prevElement,
- int elementIndex,
- int fGlobalIndependencyFlag
- )
-{
- SBR_DECODER_ELEMENT *hSbrElement;
- HANDLE_SBR_HEADER_DATA hSbrHeader;
- HANDLE_SBR_CHANNEL *pSbrChannel;
-
- SBR_FRAME_DATA *hFrameDataLeft;
- SBR_FRAME_DATA *hFrameDataRight;
-
- SBR_ERROR errorStatus = SBRDEC_OK;
- SBR_SYNC_STATE initialSyncState;
- SBR_HEADER_STATUS headerStatus = HEADER_NOT_PRESENT;
-
- INT startPos;
- INT CRCLen = 0;
-
- int stereo;
- int fDoDecodeSbrData = 1;
-
- int lastSlot, lastHdrSlot = 0, thisHdrSlot;
-
- /* Remember start position of SBR element */
- startPos = FDKgetValidBits(hBs);
-
- /* SBR sanity checks */
- if ( self == NULL || self->pSbrElement[elementIndex] == NULL ) {
- errorStatus = SBRDEC_NOT_INITIALIZED;
- goto bail;
- }
-
- hSbrElement = self->pSbrElement[elementIndex];
-
- lastSlot = (hSbrElement->useFrameSlot > 0) ? hSbrElement->useFrameSlot-1 : self->numDelayFrames;
- lastHdrSlot = hSbrElement->useHeaderSlot[lastSlot];
- thisHdrSlot = getHeaderSlot( hSbrElement->useFrameSlot, hSbrElement->useHeaderSlot ); /* Get a free header slot not used by frames not processed yet. */
-
- /* Assign the free slot to store a new header if there is one. */
- hSbrHeader = &self->sbrHeader[elementIndex][thisHdrSlot];
-
- pSbrChannel = hSbrElement->pSbrChannel;
- stereo = (hSbrElement->elementID == ID_CPE) ? 1 : 0;
-
- hFrameDataLeft = &self->pSbrElement[elementIndex]->pSbrChannel[0]->frameData[hSbrElement->useFrameSlot];
- hFrameDataRight = &self->pSbrElement[elementIndex]->pSbrChannel[1]->frameData[hSbrElement->useFrameSlot];
-
- initialSyncState = hSbrHeader->syncState;
-
- /* reset PS flag; will be set after PS was found */
- self->flags &= ~SBRDEC_PS_DECODED;
-
- if (hSbrHeader->status & SBRDEC_HDR_STAT_UPDATE) {
- /* Got a new header from extern (e.g. from an ASC) */
- headerStatus = HEADER_OK;
- hSbrHeader->status &= ~SBRDEC_HDR_STAT_UPDATE;
- }
- else if (thisHdrSlot != lastHdrSlot) {
- /* Copy the last header into this slot otherwise the
- header compare will trigger more HEADER_RESETs than needed. */
- copySbrHeader( hSbrHeader, &self->sbrHeader[elementIndex][lastHdrSlot] );
- }
-
- /*
- Check if bit stream data is valid and matches the element context
- */
- if ( ((prevElement != ID_SCE) && (prevElement != ID_CPE)) || prevElement != hSbrElement->elementID) {
- /* In case of LFE we also land here, since there is no LFE SBR element (do upsampling only) */
- fDoDecodeSbrData = 0;
- }
-
- if (fDoDecodeSbrData)
- {
- if ((INT)FDKgetValidBits(hBs) <= 0) {
- fDoDecodeSbrData = 0;
- }
- }
-
- /*
- SBR CRC-check
- */
- if (fDoDecodeSbrData)
- {
- if (crcFlag == 1) {
- switch (self->coreCodec) {
- case AOT_ER_AAC_ELD:
- FDKpushFor (hBs, 10);
- /* check sbrcrc later: we don't know the payload length now */
- break;
- default:
- CRCLen = bsPayLen - 10; /* change: 0 => i */
- if (CRCLen < 0) {
- fDoDecodeSbrData = 0;
- } else {
- fDoDecodeSbrData = SbrCrcCheck (hBs, CRCLen);
- }
- break;
- }
- }
- } /* if (fDoDecodeSbrData) */
-
- /*
- Read in the header data and issue a reset if change occured
- */
- if (fDoDecodeSbrData)
- {
- int sbrHeaderPresent;
-
- {
- sbrHeaderPresent = FDKreadBit(hBs);
- }
-
- if ( sbrHeaderPresent ) {
- headerStatus = sbrGetHeaderData (hSbrHeader,
- hBs,
- self->flags,
- 1);
- }
-
- if (headerStatus == HEADER_RESET)
- {
- errorStatus = sbrDecoder_HeaderUpdate(
- self,
- hSbrHeader,
- headerStatus,
- pSbrChannel,
- hSbrElement->nChannels
- );
-
- if (errorStatus == SBRDEC_OK) {
- hSbrHeader->syncState = SBR_HEADER;
- } else {
- hSbrHeader->syncState = SBR_NOT_INITIALIZED;
- }
- }
-
- if (errorStatus != SBRDEC_OK) {
- fDoDecodeSbrData = 0;
- }
- } /* if (fDoDecodeSbrData) */
-
- /*
- Print debugging output only if state has changed
- */
-
- /* read frame data */
- if ((hSbrHeader->syncState >= SBR_HEADER) && fDoDecodeSbrData) {
- int sbrFrameOk;
- /* read the SBR element data */
- if (stereo) {
- sbrFrameOk = sbrGetChannelPairElement(hSbrHeader,
- hFrameDataLeft,
- hFrameDataRight,
- hBs,
- self->flags,
- self->pSbrElement[elementIndex]->transposerSettings.overlap);
- }
- else {
- if (self->hParametricStereoDec != NULL) {
- /* update slot index for PS bitstream parsing */
- self->hParametricStereoDec->bsLastSlot = self->hParametricStereoDec->bsReadSlot;
- self->hParametricStereoDec->bsReadSlot = hSbrElement->useFrameSlot;
- }
- sbrFrameOk = sbrGetSingleChannelElement(hSbrHeader,
- hFrameDataLeft,
- hBs,
- self->hParametricStereoDec,
- self->flags,
- self->pSbrElement[elementIndex]->transposerSettings.overlap);
- }
- if (!sbrFrameOk) {
- fDoDecodeSbrData = 0;
- }
- else {
- INT valBits;
-
- if (bsPayLen > 0) {
- valBits = bsPayLen - ((INT)startPos - (INT)FDKgetValidBits(hBs));
- } else {
- valBits = (INT)FDKgetValidBits(hBs);
- }
-
- if ( crcFlag == 1 ) {
- switch (self->coreCodec) {
- case AOT_ER_AAC_ELD:
- {
- /* late crc check for eld */
- INT payloadbits = (INT)startPos - (INT)FDKgetValidBits(hBs) - startPos;
- INT crcLen = payloadbits - 10;
- FDKpushBack(hBs, payloadbits);
- fDoDecodeSbrData = SbrCrcCheck (hBs, crcLen);
- FDKpushFor(hBs, crcLen);
- }
- break;
- default:
- break;
- }
- }
-
- /* sanity check of remaining bits */
- if (valBits < 0) {
- fDoDecodeSbrData = 0;
- } else {
- switch (self->coreCodec) {
- case AOT_SBR:
- case AOT_PS:
- case AOT_AAC_LC:
- {
- /* This sanity check is only meaningful with General Audio bitstreams */
- int alignBits = valBits & 0x7;
-
- if (valBits > alignBits) {
- fDoDecodeSbrData = 0;
- }
- }
- break;
- default:
- /* No sanity check available */
- break;
- }
- }
- }
- }
-
- if (!fDoDecodeSbrData) {
- /* Set error flag for this slot to trigger concealment */
- self->pSbrElement[elementIndex]->frameErrorFlag[hSbrElement->useFrameSlot] = 1;
- errorStatus = SBRDEC_PARSE_ERROR;
- } else {
- /* Everything seems to be ok so clear the error flag */
- self->pSbrElement[elementIndex]->frameErrorFlag[hSbrElement->useFrameSlot] = 0;
- }
-
- if (!stereo) {
- /* Turn coupling off explicitely to avoid access to absent right frame data
- that might occur with corrupt bitstreams. */
- hFrameDataLeft->coupling = COUPLING_OFF;
- }
-
-bail:
- if (errorStatus == SBRDEC_OK) {
- if (headerStatus == HEADER_NOT_PRESENT) {
- /* Use the old header for this frame */
- hSbrElement->useHeaderSlot[hSbrElement->useFrameSlot] = lastHdrSlot;
- } else {
- /* Use the new header for this frame */
- hSbrElement->useHeaderSlot[hSbrElement->useFrameSlot] = thisHdrSlot;
- }
-
- /* Move frame pointer to the next slot which is up to be decoded/applied next */
- hSbrElement->useFrameSlot = (hSbrElement->useFrameSlot+1) % (self->numDelayFrames+1);
- }
-
- *count -= startPos - FDKgetValidBits(hBs);
-
- return errorStatus;
-}
-
-
-/**
- * \brief Render one SBR element into time domain signal.
- * \param self SBR decoder handle
- * \param timeData pointer to output buffer
- * \param interleaved flag indicating interleaved channel output
- * \param channelMapping pointer to UCHAR array where next 2 channel offsets are stored.
- * \param elementIndex enumerating index of the SBR element to render.
- * \param numInChannels number of channels from core coder (reading stride).
- * \param numOutChannels pointer to a location to return number of output channels.
- * \param psPossible flag indicating if PS is possible or not.
- * \return SBRDEC_OK if successfull, else error code
- */
-static SBR_ERROR
-sbrDecoder_DecodeElement (
- HANDLE_SBRDECODER self,
- INT_PCM *timeData,
- const int interleaved,
- const UCHAR *channelMapping,
- const int elementIndex,
- const int numInChannels,
- int *numOutChannels,
- const int psPossible
- )
-{
- SBR_DECODER_ELEMENT *hSbrElement = self->pSbrElement[elementIndex];
- HANDLE_SBR_CHANNEL *pSbrChannel = self->pSbrElement[elementIndex]->pSbrChannel;
- HANDLE_SBR_HEADER_DATA hSbrHeader = &self->sbrHeader[elementIndex][hSbrElement->useHeaderSlot[hSbrElement->useFrameSlot]];
- HANDLE_PS_DEC h_ps_d = self->hParametricStereoDec;
-
- /* get memory for frame data from scratch */
- SBR_FRAME_DATA *hFrameDataLeft = &hSbrElement->pSbrChannel[0]->frameData[hSbrElement->useFrameSlot];
- SBR_FRAME_DATA *hFrameDataRight = &hSbrElement->pSbrChannel[1]->frameData[hSbrElement->useFrameSlot];
-
- SBR_ERROR errorStatus = SBRDEC_OK;
-
-
- INT strideIn, strideOut, offset0, offset1;
- INT codecFrameSize = self->codecFrameSize;
-
- int stereo = (hSbrElement->elementID == ID_CPE) ? 1 : 0;
- int numElementChannels = hSbrElement->nChannels; /* Number of channels of the current SBR element */
-
- /* Update the header error flag */
- hSbrHeader->frameErrorFlag = hSbrElement->frameErrorFlag[hSbrElement->useFrameSlot];
-
- /*
- Prepare filterbank for upsampling if no valid bit stream data is available.
- */
- if ( hSbrHeader->syncState == SBR_NOT_INITIALIZED )
- {
- errorStatus = initHeaderData(
- hSbrHeader,
- self->sampleRateIn,
- self->sampleRateOut,
- codecFrameSize,
- self->flags
- );
-
- if (errorStatus != SBRDEC_OK) {
- return errorStatus;
- }
-
- hSbrHeader->syncState = UPSAMPLING;
-
- errorStatus = sbrDecoder_HeaderUpdate(
- self,
- hSbrHeader,
- HEADER_NOT_PRESENT,
- pSbrChannel,
- hSbrElement->nChannels
- );
-
- if (errorStatus != SBRDEC_OK) {
- hSbrHeader->syncState = SBR_NOT_INITIALIZED;
- return errorStatus;
- }
- }
-
- /* reset */
- if (hSbrHeader->status & SBRDEC_HDR_STAT_RESET) {
- int ch;
- for (ch = 0 ; ch < numElementChannels; ch++) {
- SBR_ERROR errorStatusTmp = SBRDEC_OK;
-
- errorStatusTmp = resetSbrDec (
- &pSbrChannel[ch]->SbrDec,
- hSbrHeader,
- &pSbrChannel[ch]->prevFrameData,
- self->flags & SBRDEC_LOW_POWER,
- self->synDownsampleFac
- );
-
- if (errorStatusTmp != SBRDEC_OK) {
- errorStatus = errorStatusTmp;
- }
- }
- hSbrHeader->status &= ~SBRDEC_HDR_STAT_RESET;
- }
-
- /* decoding */
- if ( (hSbrHeader->syncState == SBR_ACTIVE)
- || ((hSbrHeader->syncState == SBR_HEADER) && (hSbrHeader->frameErrorFlag == 0)) )
- {
- errorStatus = SBRDEC_OK;
-
- decodeSbrData (hSbrHeader,
- hFrameDataLeft,
- &pSbrChannel[0]->prevFrameData,
- (stereo) ? hFrameDataRight : NULL,
- (stereo) ? &pSbrChannel[1]->prevFrameData : NULL);
-
-
- /* Now we have a full parameter set and can do parameter
- based concealment instead of plain upsampling. */
- hSbrHeader->syncState = SBR_ACTIVE;
- }
-
- /* decode PS data if available */
- if (h_ps_d != NULL && psPossible) {
- int applyPs = 1;
-
- /* define which frame delay line slot to process */
- h_ps_d->processSlot = hSbrElement->useFrameSlot;
-
- applyPs = DecodePs(h_ps_d, hSbrHeader->frameErrorFlag);
- self->flags |= (applyPs) ? SBRDEC_PS_DECODED : 0;
- }
-
- /* Set strides for reading and writing */
- if (interleaved) {
- strideIn = numInChannels;
- if ( psPossible )
- strideOut = (numInChannels < 2) ? 2 : numInChannels;
- else
- strideOut = numInChannels;
- offset0 = channelMapping[0];
- offset1 = channelMapping[1];
- } else {
- strideIn = 1;
- strideOut = 1;
- offset0 = channelMapping[0]*2*codecFrameSize;
- offset1 = channelMapping[1]*2*codecFrameSize;
- }
-
- /* use same buffers for left and right channel and apply PS per timeslot */
- /* Process left channel */
-//FDKprintf("self->codecFrameSize %d\t%d\n",self->codecFrameSize,self->sampleRateIn);
- sbr_dec (&pSbrChannel[0]->SbrDec,
- timeData + offset0,
- timeData + offset0,
- &pSbrChannel[1]->SbrDec,
- timeData + offset1,
- strideIn,
- strideOut,
- hSbrHeader,
- hFrameDataLeft,
- &pSbrChannel[0]->prevFrameData,
- (hSbrHeader->syncState == SBR_ACTIVE),
- h_ps_d,
- self->flags
- );
-
- if (stereo) {
- /* Process right channel */
- sbr_dec (&pSbrChannel[1]->SbrDec,
- timeData + offset1,
- timeData + offset1,
- NULL,
- NULL,
- strideIn,
- strideOut,
- hSbrHeader,
- hFrameDataRight,
- &pSbrChannel[1]->prevFrameData,
- (hSbrHeader->syncState == SBR_ACTIVE),
- NULL,
- self->flags
- );
- }
-
- if (h_ps_d != NULL) {
- /* save PS status for next run */
- h_ps_d->psDecodedPrv = (self->flags & SBRDEC_PS_DECODED) ? 1 : 0 ;
- }
-
- if ( psPossible
- )
- {
- FDK_ASSERT(strideOut > 1);
- if ( !(self->flags & SBRDEC_PS_DECODED) ) {
- /* A decoder which is able to decode PS has to produce a stereo output even if no PS data is availble. */
- /* So copy left channel to right channel. */
- if (interleaved) {
- INT_PCM *ptr;
- INT i;
- FDK_ASSERT(strideOut == 2);
-
- ptr = timeData;
- for (i = codecFrameSize; i--; )
- {
- INT_PCM tmp; /* This temporal variable is required because some compilers can't do *ptr++ = *ptr++ correctly. */
- tmp = *ptr++; *ptr++ = tmp;
- tmp = *ptr++; *ptr++ = tmp;
- }
- } else {
- FDKmemcpy( timeData+2*codecFrameSize, timeData, 2*codecFrameSize*sizeof(INT_PCM) );
- }
- }
- *numOutChannels = 2; /* Output minimum two channels when PS is enabled. */
- }
-
- return errorStatus;
-}
-
-
-SBR_ERROR sbrDecoder_Apply ( HANDLE_SBRDECODER self,
- INT_PCM *timeData,
- int *numChannels,
- int *sampleRate,
- const UCHAR channelMapping[(6)],
- const int interleaved,
- const int coreDecodedOk,
- UCHAR *psDecoded )
-{
- SBR_ERROR errorStatus = SBRDEC_OK;
-
- int psPossible = 0;
- int sbrElementNum;
- int numCoreChannels = *numChannels;
- int numSbrChannels = 0;
-
- psPossible = *psDecoded;
-
- if (self->numSbrElements < 1) {
- /* exit immediately to avoid access violations */
- return SBRDEC_CREATE_ERROR;
- }
-
- /* Sanity check of allocated SBR elements. */
- for (sbrElementNum=0; sbrElementNum<self->numSbrElements; sbrElementNum++) {
- if (self->pSbrElement[sbrElementNum] == NULL) {
- return SBRDEC_CREATE_ERROR;
- }
- }
-
- if (self->numSbrElements != 1 || self->pSbrElement[0]->elementID != ID_SCE) {
- psPossible = 0;
- }
-
-
- /* In case of non-interleaved time domain data and upsampling, make room for bigger SBR output. */
- if (self->synDownsampleFac == 1 && interleaved == 0) {
- int c, outputFrameSize;
-
- outputFrameSize =
- self->pSbrElement[0]->pSbrChannel[0]->SbrDec.SynthesisQMF.no_channels
- * self->pSbrElement[0]->pSbrChannel[0]->SbrDec.SynthesisQMF.no_col;
-
- for (c=numCoreChannels-1; c>0; c--) {
- FDKmemmove(timeData + c*outputFrameSize, timeData + c*self->codecFrameSize , self->codecFrameSize*sizeof(INT_PCM));
- }
- }
-
-
- /* Make sure that even if no SBR data was found/parsed *psDecoded is returned 1 if psPossible was 0. */
- if (psPossible == 0) {
- self->flags &= ~SBRDEC_PS_DECODED;
- }
-
- /* Loop over SBR elements */
- for (sbrElementNum = 0; sbrElementNum<self->numSbrElements; sbrElementNum++)
- {
- int numElementChan;
-
- if (psPossible && self->pSbrElement[sbrElementNum]->pSbrChannel[1] == NULL) {
- errorStatus = SBRDEC_UNSUPPORTED_CONFIG;
- goto bail;
- }
-
- numElementChan = (self->pSbrElement[sbrElementNum]->elementID == ID_CPE) ? 2 : 1;
-
- /* If core signal is bad then force upsampling */
- if ( ! coreDecodedOk ) {
- self->pSbrElement[sbrElementNum]->frameErrorFlag[self->pSbrElement[sbrElementNum]->useFrameSlot] = 1;
- }
-
- errorStatus = sbrDecoder_DecodeElement (
- self,
- timeData,
- interleaved,
- channelMapping,
- sbrElementNum,
- numCoreChannels,
- &numElementChan,
- psPossible
- );
-
- if (errorStatus != SBRDEC_OK) {
- goto bail;
- }
-
- numSbrChannels += numElementChan;
- channelMapping += numElementChan;
-
- if (numSbrChannels >= numCoreChannels) {
- break;
- }
- }
-
- /* Update numChannels and samplerate */
- *numChannels = numSbrChannels;
- *sampleRate = self->sampleRateOut;
- *psDecoded = (self->flags & SBRDEC_PS_DECODED) ? 1 : 0;
-
-
-
-bail:
-
- return errorStatus;
-}
-
-
-SBR_ERROR sbrDecoder_Close ( HANDLE_SBRDECODER *pSelf )
-{
- HANDLE_SBRDECODER self = *pSelf;
- int i;
-
- if (self != NULL)
- {
- if (self->hParametricStereoDec != NULL) {
- DeletePsDec ( &self->hParametricStereoDec );
- }
-
- if (self->workBuffer1 != NULL) {
- FreeRam_SbrDecWorkBuffer1(&self->workBuffer1);
- }
- if (self->workBuffer2 != NULL) {
- FreeRam_SbrDecWorkBuffer2(&self->workBuffer2);
- }
-
- for (i = 0; i < (4); i++) {
- sbrDecoder_DestroyElement( self, i );
- }
-
- FreeRam_SbrDecoder(pSelf);
- }
-
- return SBRDEC_OK;
-}
-
-
-INT sbrDecoder_GetLibInfo( LIB_INFO *info )
-{
- int i;
-
- if (info == NULL) {
- return -1;
- }
-
- /* search for next free tab */
- for (i = 0; i < FDK_MODULE_LAST; i++) {
- if (info[i].module_id == FDK_NONE)
- break;
- }
- if (i == FDK_MODULE_LAST)
- return -1;
- info += i;
-
- info->module_id = FDK_SBRDEC;
- info->version = LIB_VERSION(SBRDECODER_LIB_VL0, SBRDECODER_LIB_VL1, SBRDECODER_LIB_VL2);
- LIB_VERSION_STRING(info);
- info->build_date = (char *)SBRDECODER_LIB_BUILD_DATE;
- info->build_time = (char *)SBRDECODER_LIB_BUILD_TIME;
- info->title = (char *)SBRDECODER_LIB_TITLE;
-
- /* Set flags */
- info->flags = 0
- | CAPF_SBR_HQ
- | CAPF_SBR_LP
- | CAPF_SBR_PS_MPEG
- | CAPF_SBR_CONCEALMENT
- | CAPF_SBR_DRC
- ;
- /* End of flags */
-
- return 0;
-}
-
diff --git a/libSBRdec/src/transcendent.h b/libSBRdec/src/transcendent.h
deleted file mode 100644
index ad88bc9..0000000
--- a/libSBRdec/src/transcendent.h
+++ /dev/null
@@ -1,355 +0,0 @@
-
-/* -----------------------------------------------------------------------------------------------------------
-Software License for The Fraunhofer FDK AAC Codec Library for Android
-
-© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- All rights reserved.
-
- 1. INTRODUCTION
-The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
-the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
-This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
-
-AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
-audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
-independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
-of the MPEG specifications.
-
-Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
-may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
-individually for the purpose of encoding or decoding bit streams in products that are compliant with
-the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
-these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
-software may already be covered under those patent licenses when it is used for those licensed purposes only.
-
-Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
-are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
-applications information and documentation.
-
-2. COPYRIGHT LICENSE
-
-Redistribution and use in source and binary forms, with or without modification, are permitted without
-payment of copyright license fees provided that you satisfy the following conditions:
-
-You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
-your modifications thereto in source code form.
-
-You must retain the complete text of this software license in the documentation and/or other materials
-provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
-You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
-modifications thereto to recipients of copies in binary form.
-
-The name of Fraunhofer may not be used to endorse or promote products derived from this library without
-prior written permission.
-
-You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
-software or your modifications thereto.
-
-Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
-and the date of any change. For modified versions of the FDK AAC Codec, the term
-"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
-"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
-
-3. NO PATENT LICENSE
-
-NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
-ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
-respect to this software.
-
-You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
-by appropriate patent licenses.
-
-4. DISCLAIMER
-
-This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
-"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
-of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
-including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
-or business interruption, however caused and on any theory of liability, whether in contract, strict
-liability, or tort (including negligence), arising in any way out of the use of this software, even if
-advised of the possibility of such damage.
-
-5. CONTACT INFORMATION
-
-Fraunhofer Institute for Integrated Circuits IIS
-Attention: Audio and Multimedia Departments - FDK AAC LL
-Am Wolfsmantel 33
-91058 Erlangen, Germany
-
-www.iis.fraunhofer.de/amm
-amm-info@iis.fraunhofer.de
------------------------------------------------------------------------------------------------------------ */
-
-/*!
- \file
- \brief FDK Fixed Point Arithmetic Library Interface
-*/
-
-#ifndef __TRANSCENDENT_H
-#define __TRANSCENDENT_H
-
-#include "sbrdecoder.h"
-#include "sbr_rom.h"
-
-/************************************************************************/
-/*!
- \brief Get number of octaves between frequencies a and b
-
- The Result is scaled with 1/8.
- The valid range for a and b is 1 to LOG_DUALIS_TABLE_SIZE.
-
- \return ld(a/b) / 8
-*/
-/************************************************************************/
-static inline FIXP_SGL FDK_getNumOctavesDiv8(INT a, /*!< lower band */
- INT b) /*!< upper band */
-{
- return ( (SHORT)((LONG)(CalcLdInt(b) - CalcLdInt(a))>>(FRACT_BITS-3)) );
-}
-
-
-/************************************************************************/
-/*!
- \brief Add two values given by mantissa and exponent.
-
- Mantissas are in fract format with values between 0 and 1. <br>
- The base for exponents is 2. Example: \f$ a = a\_m * 2^{a\_e} \f$<br>
-*/
-/************************************************************************/
-inline void FDK_add_MantExp(FIXP_SGL a_m, /*!< Mantissa of 1st operand a */
- SCHAR a_e, /*!< Exponent of 1st operand a */
- FIXP_SGL b_m, /*!< Mantissa of 2nd operand b */
- SCHAR b_e, /*!< Exponent of 2nd operand b */
- FIXP_SGL *ptrSum_m, /*!< Mantissa of result */
- SCHAR *ptrSum_e) /*!< Exponent of result */
-{
- FIXP_DBL accu;
- int shift;
- int shiftAbs;
-
- FIXP_DBL shiftedMantissa;
- FIXP_DBL otherMantissa;
-
- /* Equalize exponents of the summands.
- For the smaller summand, the exponent is adapted and
- for compensation, the mantissa is shifted right. */
-
- shift = (int)(a_e - b_e);
-
- shiftAbs = (shift>0)? shift : -shift;
- shiftAbs = (shiftAbs < DFRACT_BITS-1)? shiftAbs : DFRACT_BITS-1;
- shiftedMantissa = (shift>0)? (FX_SGL2FX_DBL(b_m) >> shiftAbs) : (FX_SGL2FX_DBL(a_m) >> shiftAbs);
- otherMantissa = (shift>0)? FX_SGL2FX_DBL(a_m) : FX_SGL2FX_DBL(b_m);
- *ptrSum_e = (shift>0)? a_e : b_e;
-
- accu = (shiftedMantissa >> 1) + (otherMantissa >> 1);
- /* shift by 1 bit to avoid overflow */
-
- if ( (accu >= (FL2FXCONST_DBL(0.5f) - (FIXP_DBL)1)) || (accu <= FL2FXCONST_DBL(-0.5f)) )
- *ptrSum_e += 1;
- else
- accu = (shiftedMantissa + otherMantissa);
-
- *ptrSum_m = FX_DBL2FX_SGL(accu);
-
-}
-
-inline void FDK_add_MantExp(FIXP_DBL a, /*!< Mantissa of 1st operand a */
- SCHAR a_e, /*!< Exponent of 1st operand a */
- FIXP_DBL b, /*!< Mantissa of 2nd operand b */
- SCHAR b_e, /*!< Exponent of 2nd operand b */
- FIXP_DBL *ptrSum, /*!< Mantissa of result */
- SCHAR *ptrSum_e) /*!< Exponent of result */
-{
- FIXP_DBL accu;
- int shift;
- int shiftAbs;
-
- FIXP_DBL shiftedMantissa;
- FIXP_DBL otherMantissa;
-
- /* Equalize exponents of the summands.
- For the smaller summand, the exponent is adapted and
- for compensation, the mantissa is shifted right. */
-
- shift = (int)(a_e - b_e);
-
- shiftAbs = (shift>0)? shift : -shift;
- shiftAbs = (shiftAbs < DFRACT_BITS-1)? shiftAbs : DFRACT_BITS-1;
- shiftedMantissa = (shift>0)? (b >> shiftAbs) : (a >> shiftAbs);
- otherMantissa = (shift>0)? a : b;
- *ptrSum_e = (shift>0)? a_e : b_e;
-
- accu = (shiftedMantissa >> 1) + (otherMantissa >> 1);
- /* shift by 1 bit to avoid overflow */
-
- if ( (accu >= (FL2FXCONST_DBL(0.5f) - (FIXP_DBL)1)) || (accu <= FL2FXCONST_DBL(-0.5f)) )
- *ptrSum_e += 1;
- else
- accu = (shiftedMantissa + otherMantissa);
-
- *ptrSum = accu;
-
-}
-
-/************************************************************************/
-/*!
- \brief Divide two values given by mantissa and exponent.
-
- Mantissas are in fract format with values between 0 and 1. <br>
- The base for exponents is 2. Example: \f$ a = a\_m * 2^{a\_e} \f$<br>
-
- For performance reasons, the division is based on a table lookup
- which limits accuracy.
-*/
-/************************************************************************/
-static inline void FDK_divide_MantExp(FIXP_SGL a_m, /*!< Mantissa of dividend a */
- SCHAR a_e, /*!< Exponent of dividend a */
- FIXP_SGL b_m, /*!< Mantissa of divisor b */
- SCHAR b_e, /*!< Exponent of divisor b */
- FIXP_SGL *ptrResult_m, /*!< Mantissa of quotient a/b */
- SCHAR *ptrResult_e) /*!< Exponent of quotient a/b */
-
-{
- int preShift, postShift, index, shift;
- FIXP_DBL ratio_m;
- FIXP_SGL bInv_m = FL2FXCONST_SGL(0.0f);
-
- preShift = CntLeadingZeros(FX_SGL2FX_DBL(b_m));
-
- /*
- Shift b into the range from 0..INV_TABLE_SIZE-1,
-
- E.g. 10 bits must be skipped for INV_TABLE_BITS 8:
- - leave 8 bits as index for table
- - skip sign bit,
- - skip first bit of mantissa, because this is always the same (>0.5)
-
- We are dealing with energies, so we need not care
- about negative numbers
- */
-
- /*
- The first interval has half width so the lowest bit of the index is
- needed for a doubled resolution.
- */
- shift = (FRACT_BITS - 2 - INV_TABLE_BITS - preShift);
-
- index = (shift<0)? (LONG)b_m << (-shift) : (LONG)b_m >> shift;
-
-
- /* The index has INV_TABLE_BITS +1 valid bits here. Clear the other bits. */
- index &= (1 << (INV_TABLE_BITS+1)) - 1;
-
- /* Remove offset of half an interval */
- index--;
-
- /* Now the lowest bit is shifted out */
- index = index >> 1;
-
- /* Fetch inversed mantissa from table: */
- bInv_m = (index<0)? bInv_m : FDK_sbrDecoder_invTable[index];
-
- /* Multiply a with the inverse of b: */
- ratio_m = (index<0)? FX_SGL2FX_DBL(a_m >> 1) : fMultDiv2(bInv_m,a_m);
-
- postShift = CntLeadingZeros(ratio_m)-1;
-
- *ptrResult_m = FX_DBL2FX_SGL(ratio_m << postShift);
- *ptrResult_e = a_e - b_e + 1 + preShift - postShift;
-}
-
-static inline void FDK_divide_MantExp(FIXP_DBL a_m, /*!< Mantissa of dividend a */
- SCHAR a_e, /*!< Exponent of dividend a */
- FIXP_DBL b_m, /*!< Mantissa of divisor b */
- SCHAR b_e, /*!< Exponent of divisor b */
- FIXP_DBL *ptrResult_m, /*!< Mantissa of quotient a/b */
- SCHAR *ptrResult_e) /*!< Exponent of quotient a/b */
-
-{
- int preShift, postShift, index, shift;
- FIXP_DBL ratio_m;
- FIXP_SGL bInv_m = FL2FXCONST_SGL(0.0f);
-
- preShift = CntLeadingZeros(b_m);
-
- /*
- Shift b into the range from 0..INV_TABLE_SIZE-1,
-
- E.g. 10 bits must be skipped for INV_TABLE_BITS 8:
- - leave 8 bits as index for table
- - skip sign bit,
- - skip first bit of mantissa, because this is always the same (>0.5)
-
- We are dealing with energies, so we need not care
- about negative numbers
- */
-
- /*
- The first interval has half width so the lowest bit of the index is
- needed for a doubled resolution.
- */
- shift = (DFRACT_BITS - 2 - INV_TABLE_BITS - preShift);
-
- index = (shift<0)? (LONG)b_m << (-shift) : (LONG)b_m >> shift;
-
-
- /* The index has INV_TABLE_BITS +1 valid bits here. Clear the other bits. */
- index &= (1 << (INV_TABLE_BITS+1)) - 1;
-
- /* Remove offset of half an interval */
- index--;
-
- /* Now the lowest bit is shifted out */
- index = index >> 1;
-
- /* Fetch inversed mantissa from table: */
- bInv_m = (index<0)? bInv_m : FDK_sbrDecoder_invTable[index];
-
- /* Multiply a with the inverse of b: */
- ratio_m = (index<0)? (a_m >> 1) : fMultDiv2(bInv_m,a_m);
-
- postShift = CntLeadingZeros(ratio_m)-1;
-
- *ptrResult_m = ratio_m << postShift;
- *ptrResult_e = a_e - b_e + 1 + preShift - postShift;
-}
-
-/*!
- \brief Calculate the squareroot of a number given by mantissa and exponent
-
- Mantissa is in fract format with values between 0 and 1. <br>
- The base for the exponent is 2. Example: \f$ a = a\_m * 2^{a\_e} \f$<br>
- The operand is addressed via pointers and will be overwritten with the result.
-
- For performance reasons, the square root is based on a table lookup
- which limits accuracy.
-*/
-static inline void FDK_sqrt_MantExp(FIXP_DBL *mantissa, /*!< Pointer to mantissa */
- SCHAR *exponent,
- const SCHAR *destScale)
-{
- FIXP_DBL input_m = *mantissa;
- int input_e = (int) *exponent;
- FIXP_DBL result = FL2FXCONST_DBL(0.0f);
- int result_e = -FRACT_BITS;
-
- /* Call lookup square root, which does internally normalization. */
- result = sqrtFixp_lookup(input_m, &input_e);
- result_e = input_e;
-
- /* Write result */
- if (exponent==destScale) {
- *mantissa = result;
- *exponent = result_e;
- } else {
- int shift = result_e - *destScale;
- *mantissa = (shift>=0) ? result << (INT)fixMin(DFRACT_BITS-1,shift)
- : result >> (INT)fixMin(DFRACT_BITS-1,-shift);
- *exponent = *destScale;
- }
-}
-
-
-#endif