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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/include/sbrdecoder.h
parent78a801e4d716c6f2403cc56cf6c5b6f138f24b2f (diff)
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-
-/* -----------------------------------------------------------------------------------------------------------
-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