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Diffstat (limited to 'libSBRdec/src/env_extr.h')
| -rw-r--r-- | libSBRdec/src/env_extr.h | 515 |
1 files changed, 303 insertions, 212 deletions
diff --git a/libSBRdec/src/env_extr.h b/libSBRdec/src/env_extr.h index 0518ea9..38c04a3 100644 --- a/libSBRdec/src/env_extr.h +++ b/libSBRdec/src/env_extr.h @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - All rights reserved. +© Copyright 1995 - 2018 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. +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: +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 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 +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. +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. +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." +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. +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. +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. +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 @@ -79,15 +90,23 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ + +/**************************** SBR decoder library ****************************** + + Author(s): + + Description: + +*******************************************************************************/ /*! \file - \brief Envelope extraction prototypes + \brief Envelope extraction prototypes */ -#ifndef __ENVELOPE_EXTRACTION_H -#define __ENVELOPE_EXTRACTION_H +#ifndef ENV_EXTR_H +#define ENV_EXTR_H #include "sbrdecoder.h" @@ -95,6 +114,7 @@ amm-info@iis.fraunhofer.de #include "lpp_tran.h" #include "psdec.h" +#include "pvc_dec.h" #define ENV_EXP_FRACT 0 /*!< Shift raw envelope data to support fractional numbers. @@ -104,208 +124,278 @@ amm-info@iis.fraunhofer.de */ #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. +/*!< 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 -{ +#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 */ + +#define ADD_HARMONICS_FLAGS_SIZE 2 /* ceil(MAX_FREQ_COEFFS/32) */ + +typedef enum { HEADER_NOT_PRESENT, HEADER_ERROR, HEADER_OK, HEADER_RESET -} -SBR_HEADER_STATUS; +} SBR_HEADER_STATUS; -typedef enum -{ +typedef enum { SBR_NOT_INITIALIZED = 0, UPSAMPLING = 1, SBR_HEADER = 2, SBR_ACTIVE = 3 -} -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; +} 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 ov_highSubband; /*!< if headerchange applies this value holds the old + highband value -> highband value of overlap area; + required for overlap in usac when headerchange + occurs between XVAR and VARX frame */ + 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_SYNTAX_DRM 2048 /* Flag indicating that DRM30/DRM+ reverse syntax is being used. */ -#define SBRDEC_DOWNSAMPLE 8192 /* Flag indicating that the downsampling mode is used. */ -#define SBRDEC_FLUSH 16384 /* Flag is used to flush all elements in use. */ -#define SBRDEC_FORCE_RESET 32768 /* Flag is used to force a reset of all elements in use. */ - -#define SBRDEC_HDR_STAT_RESET 1 +#define SBRDEC_ELD_GRID 1 +#define SBRDEC_SYNTAX_SCAL 2 +#define SBRDEC_SYNTAX_USAC 4 +#define SBRDEC_SYNTAX_RSVD50 8 +#define SBRDEC_USAC_INDEP \ + 16 /* Flag indicating that USAC global independency flag is active. */ +#define SBRDEC_LOW_POWER \ + 32 /* Flag indicating that Low Power QMF mode shall be used. */ +#define SBRDEC_PS_DECODED \ + 64 /* Flag indicating that PS was decoded and rendered. */ +#define SBRDEC_QUAD_RATE \ + 128 /* Flag indicating that USAC SBR 4:1 is active. \ + */ +#define SBRDEC_USAC_HARMONICSBR \ + 256 /* Flag indicating that USAC HBE tool is active. */ +#define SBRDEC_LD_MPS_QMF \ + 512 /* Flag indicating that the LD-MPS QMF shall be used. */ +#define SBRDEC_USAC_ITES \ + 1024 /* Flag indicating that USAC inter TES tool is active. */ +#define SBRDEC_SYNTAX_DRM \ + 2048 /* Flag indicating that DRM30/DRM+ reverse syntax is being used. */ +#define SBRDEC_ELD_DOWNSCALE \ + 4096 /* Flag indicating that ELD downscaled mode decoding is used */ +#define SBRDEC_DOWNSAMPLE \ + 8192 /* Flag indicating that the downsampling mode is used. */ +#define SBRDEC_FLUSH 16384 /* Flag is used to flush all elements in use. */ +#define SBRDEC_FORCE_RESET \ + 32768 /* Flag is used to force a reset of all elements in use. */ +#define SBRDEC_SKIP_QMF_ANA \ + (1 << 21) /* Flag indicating that the input data is provided in the QMF \ + domain. */ +#define SBRDEC_SKIP_QMF_SYN \ + (1 << 22) /* Flag indicating that the output data is exported in the QMF \ + domain. */ + +#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. */ + 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. */ + UCHAR pvc_mode; /*!< Predictive vector coding mode */ } 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*/ + 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) */ + 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. */ +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) */ + 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. */ + SBR_HEADER_DATA_BS bs_data; /*!< current SBR header. */ + SBR_HEADER_DATA_BS bs_dflt; /*!< Default sbr header. */ + SBR_HEADER_DATA_BS_INFO bs_info; /*!< SBR info. */ - FREQ_BAND_DATA freqBandData; /*!< Pointer to struct #FREQ_BAND_DATA */ -} -SBR_HEADER_DATA; + FREQ_BAND_DATA freqBandData; /*!< Pointer to struct #FREQ_BAND_DATA */ + UCHAR pvcIDprev; +} 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 */ + UCHAR pvcBorders[MAX_PVC_ENVELOPES + 1]; + UCHAR noisePosition; + UCHAR varLength; +} FRAME_INFO; -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 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 */ + UCHAR prevSbrPitchInBins; /*!< Previous frame pitchInBins */ + FRAME_INFO prevFrameInfo; +} SBR_PREV_FRAME_DATA; typedef SBR_PREV_FRAME_DATA *HANDLE_SBR_PREV_FRAME_DATA; +typedef struct { + int nScaleFactors; /*!< total number of scalefactors in frame */ -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 */ + 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) */ + 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 */ + ULONG addHarmonics[ADD_HARMONICS_FLAGS_SIZE]; /*!< Flags for synthetic sine + addition (aligned to MSB) */ FIXP_SGL iEnvelope[MAX_NUM_ENVELOPE_VALUES]; /*!< Envelope data */ FIXP_SGL sbrNoiseFloorLevel[MAX_NUM_NOISE_VALUES]; /*!< Noise envelope data */ -} -SBR_FRAME_DATA; + UCHAR iTESactive; /*!< One flag for each envelope to enable USAC inter-TES */ + UCHAR + interTempShapeMode[MAX_ENVELOPES]; /*!< USAC inter-TES: + bs_inter_temp_shape_mode[ch][env] + value */ + UCHAR pvcID[PVC_NTIMESLOT]; /*!< One PVC ID value for each time slot */ + UCHAR ns; + UCHAR sinusoidal_position; + + UCHAR sbrPatchingMode; + UCHAR sbrOversamplingFlag; + UCHAR sbrPitchInBins; +} SBR_FRAME_DATA; typedef SBR_FRAME_DATA *HANDLE_SBR_FRAME_DATA; -void initSbrPrevFrameData (HANDLE_SBR_PREV_FRAME_DATA h_prev_data, - int timeSlots); +/*! +\brief Maps sampling frequencies to frequencies for which setup tables are +available +Maps arbitary sampling frequency to nearest neighbors for which setup tables +are available (e.g. 25600 -> 24000). +Used for startFreq calculation. +The mapping is defined in 14496-3 (4.6.18.2.6), fs(SBR), and table 4.82 -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 - ); +\return mapped sampling frequency +*/ +UINT sbrdec_mapToStdSampleRate(UINT fs, + UINT isUsac); /*!< Output sampling frequency */ -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); +void initSbrPrevFrameData(HANDLE_SBR_PREV_FRAME_DATA h_prev_data, + int timeSlots); + +int sbrGetChannelElement(HANDLE_SBR_HEADER_DATA hHeaderData, + HANDLE_SBR_FRAME_DATA hFrameDataLeft, + HANDLE_SBR_FRAME_DATA hFrameDataRight, + HANDLE_SBR_PREV_FRAME_DATA hFrameDataLeftPrev, + UCHAR pvc_mode_last, HANDLE_FDK_BITSTREAM hBitBuf, + HANDLE_PS_DEC hParametricStereoDec, 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); +sbrGetHeaderData(HANDLE_SBR_HEADER_DATA headerData, + HANDLE_FDK_BITSTREAM hBitBuf, const UINT flags, + const int fIsSbrData, const UCHAR configMode); /*! \brief Initialize SBR header data @@ -314,11 +404,12 @@ sbrGetHeaderData (HANDLE_SBR_HEADER_DATA headerData, 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 - ); +initHeaderData(HANDLE_SBR_HEADER_DATA hHeaderData, const int sampleRateIn, + const int sampleRateOut, const INT downscaleFactor, + const int samplesPerFrame, const UINT flags, + const int setDefaultHdr); #endif + +/* Convert headroom bits to exponent */ +#define SCALE2EXP(s) (15 - (s)) +#define EXP2SCALE(e) (15 - (e)) |