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Diffstat (limited to 'libSBRenc/src/bit_sbr.cpp')
| -rw-r--r-- | libSBRenc/src/bit_sbr.cpp | 1059 |
1 files changed, 0 insertions, 1059 deletions
diff --git a/libSBRenc/src/bit_sbr.cpp b/libSBRenc/src/bit_sbr.cpp deleted file mode 100644 index 963aeff..0000000 --- a/libSBRenc/src/bit_sbr.cpp +++ /dev/null @@ -1,1059 +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 bit writing routines -*/ - - -#include "bit_sbr.h" - -#include "code_env.h" -#include "cmondata.h" -#include "sbr.h" - -#include "ps_main.h" - -typedef enum { - SBR_ID_SCE = 1, - SBR_ID_CPE -} SBR_ELEMENT_TYPE; - - -static INT encodeSbrData (HANDLE_SBR_ENV_DATA sbrEnvDataLeft, - HANDLE_SBR_ENV_DATA sbrEnvDataRight, - HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_COMMON_DATA cmonData, - SBR_ELEMENT_TYPE sbrElem, - INT coupling, - UINT sbrSyntaxFlags); - -static INT encodeSbrHeader (HANDLE_SBR_HEADER_DATA sbrHeaderData, - HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData, - HANDLE_COMMON_DATA cmonData); - - -static INT encodeSbrHeaderData (HANDLE_SBR_HEADER_DATA sbrHeaderData, - HANDLE_FDK_BITSTREAM hBitStream); - -static INT encodeSbrSingleChannelElement (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream - ,HANDLE_PARAMETRIC_STEREO hParametricStereo - ,UINT sbrSyntaxFlags - ); - - - -static INT encodeSbrChannelPairElement (HANDLE_SBR_ENV_DATA sbrEnvDataLeft, - HANDLE_SBR_ENV_DATA sbrEnvDataRight, - HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_FDK_BITSTREAM hBitStream, - INT coupling); - - -static INT encodeSbrGrid (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream); - -static int encodeLowDelaySbrGrid ( HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream, - int transmitFreqs); - -static INT encodeSbrDtdf (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream); - -static INT writeNoiseLevelData (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream, - INT coupling); - -static INT writeEnvelopeData (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream, - INT coupling); - -static INT writeSyntheticCodingData (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream); - - -static INT encodeExtendedData (HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_FDK_BITSTREAM hBitStream); - - - -static INT getSbrExtendedDataSize (HANDLE_PARAMETRIC_STEREO hParametricStereo); - -/***************************************************************************** - - functionname: FDKsbrEnc_WriteEnvSingleChannelElement - description: writes pure SBR single channel data element - returns: number of bits written - input: - output: - -*****************************************************************************/ -INT -FDKsbrEnc_WriteEnvSingleChannelElement( - HANDLE_SBR_HEADER_DATA sbrHeaderData, - HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData, - HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_COMMON_DATA cmonData, - UINT sbrSyntaxFlags - ) - -{ - INT payloadBits = 0; - - cmonData->sbrHdrBits = 0; - cmonData->sbrDataBits = 0; - - /* write pure sbr data */ - if (sbrEnvData != NULL) { - - /* write header */ - payloadBits += encodeSbrHeader (sbrHeaderData, - sbrBitstreamData, - cmonData); - - - /* write data */ - payloadBits += encodeSbrData (sbrEnvData, - NULL, - hParametricStereo, - cmonData, - SBR_ID_SCE, - 0, - sbrSyntaxFlags); - - } - return payloadBits; -} - -/***************************************************************************** - - functionname: FDKsbrEnc_WriteEnvChannelPairElement - description: writes pure SBR channel pair data element - returns: number of bits written - input: - output: - -*****************************************************************************/ -INT -FDKsbrEnc_WriteEnvChannelPairElement (HANDLE_SBR_HEADER_DATA sbrHeaderData, - HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData, - HANDLE_SBR_ENV_DATA sbrEnvDataLeft, - HANDLE_SBR_ENV_DATA sbrEnvDataRight, - HANDLE_COMMON_DATA cmonData, - UINT sbrSyntaxFlags) - -{ - INT payloadBits = 0; - cmonData->sbrHdrBits = 0; - cmonData->sbrDataBits = 0; - - /* write pure sbr data */ - if ((sbrEnvDataLeft != NULL) && (sbrEnvDataRight != NULL)) { - - /* write header */ - payloadBits += encodeSbrHeader (sbrHeaderData, - sbrBitstreamData, - cmonData); - - /* write data */ - payloadBits += encodeSbrData (sbrEnvDataLeft, - sbrEnvDataRight, - hParametricStereo, - cmonData, - SBR_ID_CPE, - sbrHeaderData->coupling, - sbrSyntaxFlags); - - } - return payloadBits; -} - -INT -FDKsbrEnc_CountSbrChannelPairElement (HANDLE_SBR_HEADER_DATA sbrHeaderData, - HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData, - HANDLE_SBR_ENV_DATA sbrEnvDataLeft, - HANDLE_SBR_ENV_DATA sbrEnvDataRight, - HANDLE_COMMON_DATA cmonData, - UINT sbrSyntaxFlags) -{ - INT payloadBits; - INT bitPos = FDKgetValidBits(&cmonData->sbrBitbuf); - - payloadBits = FDKsbrEnc_WriteEnvChannelPairElement(sbrHeaderData, - hParametricStereo, - sbrBitstreamData, - sbrEnvDataLeft, - sbrEnvDataRight, - cmonData, - sbrSyntaxFlags); - - FDKpushBack(&cmonData->sbrBitbuf, (FDKgetValidBits(&cmonData->sbrBitbuf) - bitPos) ); - - return payloadBits; -} - - -void sbrEncoder_GetHeader(SBR_ENCODER *sbrEncoder, - HANDLE_FDK_BITSTREAM hBs, - INT element_index, - int fSendHeaders) -{ - int bits; - - bits = encodeSbrHeaderData (&sbrEncoder->sbrElement[element_index]->sbrHeaderData, hBs); - - if (fSendHeaders == 0) { - /* Prevent header being embedded into the SBR payload. */ - sbrEncoder->sbrElement[element_index]->sbrBitstreamData.NrSendHeaderData = -1; - sbrEncoder->sbrElement[element_index]->sbrBitstreamData.HeaderActive = 0; - sbrEncoder->sbrElement[element_index]->sbrBitstreamData.CountSendHeaderData = -1; - } -} - - -/***************************************************************************** - - functionname: encodeSbrHeader - description: encodes SBR Header information - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT -encodeSbrHeader (HANDLE_SBR_HEADER_DATA sbrHeaderData, - HANDLE_SBR_BITSTREAM_DATA sbrBitstreamData, - HANDLE_COMMON_DATA cmonData) -{ - INT payloadBits = 0; - - if (sbrBitstreamData->HeaderActive) { - payloadBits += FDKwriteBits (&cmonData->sbrBitbuf, 1, 1); - payloadBits += encodeSbrHeaderData (sbrHeaderData, - &cmonData->sbrBitbuf); - } - else { - payloadBits += FDKwriteBits (&cmonData->sbrBitbuf, 0, 1); - } - - cmonData->sbrHdrBits = payloadBits; - - return payloadBits; -} - - - -/***************************************************************************** - - functionname: encodeSbrHeaderData - description: writes sbr_header() - bs_protocol_version through bs_header_extra_2 - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT -encodeSbrHeaderData (HANDLE_SBR_HEADER_DATA sbrHeaderData, - HANDLE_FDK_BITSTREAM hBitStream) - -{ - INT payloadBits = 0; - if (sbrHeaderData != NULL) { - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_amp_res, - SI_SBR_AMP_RES_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_start_frequency, - SI_SBR_START_FREQ_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_stop_frequency, - SI_SBR_STOP_FREQ_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_xover_band, - SI_SBR_XOVER_BAND_BITS); - - payloadBits += FDKwriteBits (hBitStream, 0, - SI_SBR_RESERVED_BITS); - - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->header_extra_1, - SI_SBR_HEADER_EXTRA_1_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->header_extra_2, - SI_SBR_HEADER_EXTRA_2_BITS); - - - if (sbrHeaderData->header_extra_1) { - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->freqScale, - SI_SBR_FREQ_SCALE_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->alterScale, - SI_SBR_ALTER_SCALE_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_noise_bands, - SI_SBR_NOISE_BANDS_BITS); - } /* sbrHeaderData->header_extra_1 */ - - if (sbrHeaderData->header_extra_2) { - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_limiter_bands, - SI_SBR_LIMITER_BANDS_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_limiter_gains, - SI_SBR_LIMITER_GAINS_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_interpol_freq, - SI_SBR_INTERPOL_FREQ_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrHeaderData->sbr_smoothing_length, - SI_SBR_SMOOTHING_LENGTH_BITS); - - } /* sbrHeaderData->header_extra_2 */ - } /* sbrHeaderData != NULL */ - - return payloadBits; -} - - -/***************************************************************************** - - functionname: encodeSbrData - description: encodes sbr Data information - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT -encodeSbrData (HANDLE_SBR_ENV_DATA sbrEnvDataLeft, - HANDLE_SBR_ENV_DATA sbrEnvDataRight, - HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_COMMON_DATA cmonData, - SBR_ELEMENT_TYPE sbrElem, - INT coupling, - UINT sbrSyntaxFlags) -{ - INT payloadBits = 0; - - switch (sbrElem) { - case SBR_ID_SCE: - payloadBits += encodeSbrSingleChannelElement (sbrEnvDataLeft, &cmonData->sbrBitbuf, hParametricStereo, sbrSyntaxFlags); - break; - case SBR_ID_CPE: - payloadBits += encodeSbrChannelPairElement (sbrEnvDataLeft, sbrEnvDataRight, hParametricStereo, &cmonData->sbrBitbuf, coupling); - break; - default: - /* we never should apply SBR to any other element type */ - FDK_ASSERT (0); - } - - cmonData->sbrDataBits = payloadBits; - - return payloadBits; -} - -#define MODE_FREQ_TANS 1 -#define MODE_NO_FREQ_TRAN 0 -#define LD_TRANSMISSION MODE_FREQ_TANS -static int encodeFreqs (int mode) { - return ((mode & MODE_FREQ_TANS) ? 1 : 0); -} - - -/***************************************************************************** - - functionname: encodeSbrSingleChannelElement - description: encodes sbr SCE information - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT -encodeSbrSingleChannelElement (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream - ,HANDLE_PARAMETRIC_STEREO hParametricStereo - ,UINT sbrSyntaxFlags - ) -{ - INT i, payloadBits = 0; - - payloadBits += FDKwriteBits (hBitStream, 0, SI_SBR_DATA_EXTRA_BITS); /* no reserved bits */ - - if (sbrEnvData->ldGrid) { - if ( sbrEnvData->hSbrBSGrid->frameClass != FIXFIXonly ) { - /* encode normal SbrGrid */ - payloadBits += encodeSbrGrid (sbrEnvData, hBitStream); - } else { - /* use FIXFIXonly frame Grid */ - payloadBits += encodeLowDelaySbrGrid ( sbrEnvData, hBitStream, encodeFreqs(LD_TRANSMISSION)); - } - } - else - { - if (sbrSyntaxFlags & SBR_SYNTAX_SCALABLE) { - payloadBits += FDKwriteBits (hBitStream, 1, SI_SBR_COUPLING_BITS); - } - payloadBits += encodeSbrGrid (sbrEnvData, hBitStream); - } - - payloadBits += encodeSbrDtdf (sbrEnvData, hBitStream); - - for (i = 0; i < sbrEnvData->noOfnoisebands; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->sbr_invf_mode_vec[i], SI_SBR_INVF_MODE_BITS); - } - - payloadBits += writeEnvelopeData (sbrEnvData, hBitStream, 0); - payloadBits += writeNoiseLevelData (sbrEnvData, hBitStream, 0); - - payloadBits += writeSyntheticCodingData (sbrEnvData,hBitStream); - - payloadBits += encodeExtendedData(hParametricStereo, hBitStream); - - return payloadBits; -} - - -/***************************************************************************** - - functionname: encodeSbrChannelPairElement - description: encodes sbr CPE information - returns: - input: - output: - -*****************************************************************************/ -static INT -encodeSbrChannelPairElement (HANDLE_SBR_ENV_DATA sbrEnvDataLeft, - HANDLE_SBR_ENV_DATA sbrEnvDataRight, - HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_FDK_BITSTREAM hBitStream, - INT coupling) -{ - INT payloadBits = 0; - INT i = 0; - - payloadBits += FDKwriteBits (hBitStream, 0, SI_SBR_DATA_EXTRA_BITS); /* no reserved bits */ - - payloadBits += FDKwriteBits (hBitStream, coupling, SI_SBR_COUPLING_BITS); - - if (coupling) { - if (sbrEnvDataLeft->ldGrid) { - if ( sbrEnvDataLeft->hSbrBSGrid->frameClass != FIXFIXonly ) { - /* normal SbrGrid */ - payloadBits += encodeSbrGrid (sbrEnvDataLeft, hBitStream); - - } else { - /* FIXFIXonly frame Grid */ - payloadBits += encodeLowDelaySbrGrid ( sbrEnvDataLeft, hBitStream, encodeFreqs(LD_TRANSMISSION)); - } - } else - payloadBits += encodeSbrGrid (sbrEnvDataLeft, hBitStream); - - payloadBits += encodeSbrDtdf (sbrEnvDataLeft, hBitStream); - payloadBits += encodeSbrDtdf (sbrEnvDataRight, hBitStream); - - for (i = 0; i < sbrEnvDataLeft->noOfnoisebands; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvDataLeft->sbr_invf_mode_vec[i], SI_SBR_INVF_MODE_BITS); - } - - payloadBits += writeEnvelopeData (sbrEnvDataLeft, hBitStream,1); - payloadBits += writeNoiseLevelData (sbrEnvDataLeft, hBitStream,1); - payloadBits += writeEnvelopeData (sbrEnvDataRight, hBitStream,1); - payloadBits += writeNoiseLevelData (sbrEnvDataRight, hBitStream,1); - - payloadBits += writeSyntheticCodingData (sbrEnvDataLeft,hBitStream); - payloadBits += writeSyntheticCodingData (sbrEnvDataRight,hBitStream); - - } else { /* no coupling */ - FDK_ASSERT(sbrEnvDataLeft->ldGrid == sbrEnvDataRight->ldGrid); - - if (sbrEnvDataLeft->ldGrid || sbrEnvDataRight->ldGrid) { - /* sbrEnvDataLeft (left channel) */ - if ( sbrEnvDataLeft->hSbrBSGrid->frameClass != FIXFIXonly) { - /* no FIXFIXonly Frame so we dont need encodeLowDelaySbrGrid */ - /* normal SbrGrid */ - payloadBits += encodeSbrGrid (sbrEnvDataLeft, hBitStream); - - } else { - /* FIXFIXonly frame Grid */ - payloadBits += encodeLowDelaySbrGrid ( sbrEnvDataLeft, hBitStream, encodeFreqs(LD_TRANSMISSION)); - } - - /* sbrEnvDataRight (right channel) */ - if ( sbrEnvDataRight->hSbrBSGrid->frameClass != FIXFIXonly) { - /* no FIXFIXonly Frame so we dont need encodeLowDelaySbrGrid */ - /* normal SbrGrid */ - payloadBits += encodeSbrGrid (sbrEnvDataRight, hBitStream); - - } else { - /* FIXFIXonly frame Grid */ - payloadBits += encodeLowDelaySbrGrid ( sbrEnvDataRight, hBitStream, encodeFreqs(LD_TRANSMISSION)); - } - } else - { - payloadBits += encodeSbrGrid (sbrEnvDataLeft, hBitStream); - payloadBits += encodeSbrGrid (sbrEnvDataRight, hBitStream); - } - payloadBits += encodeSbrDtdf (sbrEnvDataLeft, hBitStream); - payloadBits += encodeSbrDtdf (sbrEnvDataRight, hBitStream); - - for (i = 0; i < sbrEnvDataLeft->noOfnoisebands; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvDataLeft->sbr_invf_mode_vec[i], - SI_SBR_INVF_MODE_BITS); - } - for (i = 0; i < sbrEnvDataRight->noOfnoisebands; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvDataRight->sbr_invf_mode_vec[i], - SI_SBR_INVF_MODE_BITS); - } - - payloadBits += writeEnvelopeData (sbrEnvDataLeft, hBitStream,0); - payloadBits += writeEnvelopeData (sbrEnvDataRight, hBitStream,0); - payloadBits += writeNoiseLevelData (sbrEnvDataLeft, hBitStream,0); - payloadBits += writeNoiseLevelData (sbrEnvDataRight, hBitStream,0); - - payloadBits += writeSyntheticCodingData (sbrEnvDataLeft,hBitStream); - payloadBits += writeSyntheticCodingData (sbrEnvDataRight,hBitStream); - - } /* coupling */ - - payloadBits += encodeExtendedData(hParametricStereo, hBitStream); - - return payloadBits; -} - -static INT ceil_ln2(INT x) -{ - INT tmp=-1; - while((1<<++tmp) < x); - return(tmp); -} - - -/***************************************************************************** - - functionname: encodeSbrGrid - description: if hBitStream != NULL writes bits that describes the - time/frequency grouping of a frame; else counts them only - returns: number of bits written or counted - input: - output: - -*****************************************************************************/ -static INT -encodeSbrGrid (HANDLE_SBR_ENV_DATA sbrEnvData, HANDLE_FDK_BITSTREAM hBitStream) -{ - INT payloadBits = 0; - INT i, temp; - INT bufferFrameStart = sbrEnvData->hSbrBSGrid->bufferFrameStart; - INT numberTimeSlots = sbrEnvData->hSbrBSGrid->numberTimeSlots; - - if (sbrEnvData->ldGrid) - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hSbrBSGrid->frameClass, - SBR_CLA_BITS_LD); - else - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hSbrBSGrid->frameClass, - SBR_CLA_BITS); - - switch (sbrEnvData->hSbrBSGrid->frameClass) { - case FIXFIXonly: - FDK_ASSERT(0 /* Fatal error in encodeSbrGrid! */); - break; - case FIXFIX: - temp = ceil_ln2(sbrEnvData->hSbrBSGrid->bs_num_env); - payloadBits += FDKwriteBits (hBitStream, temp, SBR_ENV_BITS); - if ((sbrEnvData->ldGrid) && (sbrEnvData->hSbrBSGrid->bs_num_env==1)) - payloadBits += FDKwriteBits(hBitStream, sbrEnvData->currentAmpResFF, SI_SBR_AMP_RES_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->v_f[0], SBR_RES_BITS); - - break; - - case FIXVAR: - case VARFIX: - if (sbrEnvData->hSbrBSGrid->frameClass == FIXVAR) - temp = sbrEnvData->hSbrBSGrid->bs_abs_bord - (bufferFrameStart + numberTimeSlots); - else - temp = sbrEnvData->hSbrBSGrid->bs_abs_bord - bufferFrameStart; - - payloadBits += FDKwriteBits (hBitStream, temp, SBR_ABS_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->n, SBR_NUM_BITS); - - for (i = 0; i < sbrEnvData->hSbrBSGrid->n; i++) { - temp = (sbrEnvData->hSbrBSGrid->bs_rel_bord[i] - 2) >> 1; - payloadBits += FDKwriteBits (hBitStream, temp, SBR_REL_BITS); - } - - temp = ceil_ln2(sbrEnvData->hSbrBSGrid->n + 2); - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->p, temp); - - for (i = 0; i < sbrEnvData->hSbrBSGrid->n + 1; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->v_f[i], - SBR_RES_BITS); - } - break; - - case VARVAR: - temp = sbrEnvData->hSbrBSGrid->bs_abs_bord_0 - bufferFrameStart; - payloadBits += FDKwriteBits (hBitStream, temp, SBR_ABS_BITS); - temp = sbrEnvData->hSbrBSGrid->bs_abs_bord_1 - (bufferFrameStart + numberTimeSlots); - payloadBits += FDKwriteBits (hBitStream, temp, SBR_ABS_BITS); - - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->bs_num_rel_0, SBR_NUM_BITS); - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->bs_num_rel_1, SBR_NUM_BITS); - - for (i = 0; i < sbrEnvData->hSbrBSGrid->bs_num_rel_0; i++) { - temp = (sbrEnvData->hSbrBSGrid->bs_rel_bord_0[i] - 2) >> 1; - payloadBits += FDKwriteBits (hBitStream, temp, SBR_REL_BITS); - } - - for (i = 0; i < sbrEnvData->hSbrBSGrid->bs_num_rel_1; i++) { - temp = (sbrEnvData->hSbrBSGrid->bs_rel_bord_1[i] - 2) >> 1; - payloadBits += FDKwriteBits (hBitStream, temp, SBR_REL_BITS); - } - - temp = ceil_ln2(sbrEnvData->hSbrBSGrid->bs_num_rel_0 + - sbrEnvData->hSbrBSGrid->bs_num_rel_1 + 2); - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->p, temp); - - temp = sbrEnvData->hSbrBSGrid->bs_num_rel_0 + - sbrEnvData->hSbrBSGrid->bs_num_rel_1 + 1; - - for (i = 0; i < temp; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->v_fLR[i], - SBR_RES_BITS); - } - break; - } - - return payloadBits; -} - -#define SBR_CLA_BITS_LD 1 -/***************************************************************************** - - functionname: encodeLowDelaySbrGrid - description: if hBitStream != NULL writes bits that describes the - time/frequency grouping of a frame; - else counts them only - (this function only write the FIXFIXonly Bitstream data) - returns: number of bits written or counted - input: - output: - -*****************************************************************************/ -static int -encodeLowDelaySbrGrid ( HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream, - int transmitFreqs - ) -{ - int payloadBits = 0; - int i; - - /* write FIXFIXonly Grid */ - /* write frameClass [1 bit] for FIXFIXonly Grid */ - payloadBits += FDKwriteBits(hBitStream, 1, SBR_CLA_BITS_LD); - - /* absolute Borders are fix: 0,X,X,X,nTimeSlots; so we dont have to transmit them */ - /* only transmit the transient position! */ - /* with this info (b1) we can reconstruct the Frame on Decoder side : */ - /* border[0] = 0; border[1] = b1; border[2]=b1+2; border[3] = nrTimeSlots */ - - /* use 3 or 4bits for transient border (border) */ - if (sbrEnvData->hSbrBSGrid->numberTimeSlots == 8) - payloadBits += FDKwriteBits ( hBitStream, sbrEnvData->hSbrBSGrid->bs_abs_bord, 3); - else - payloadBits += FDKwriteBits ( hBitStream, sbrEnvData->hSbrBSGrid->bs_abs_bord, 4); - - if (transmitFreqs) { - /* write FreqRes grid */ - for (i = 0; i < sbrEnvData->hSbrBSGrid->bs_num_env; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->hSbrBSGrid->v_f[i], SBR_RES_BITS); - } - } - - return payloadBits; -} - -/***************************************************************************** - - functionname: encodeSbrDtdf - description: writes bits that describes the direction of the envelopes of a frame - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT -encodeSbrDtdf (HANDLE_SBR_ENV_DATA sbrEnvData, HANDLE_FDK_BITSTREAM hBitStream) -{ - INT i, payloadBits = 0, noOfNoiseEnvelopes; - - noOfNoiseEnvelopes = sbrEnvData->noOfEnvelopes > 1 ? 2 : 1; - - for (i = 0; i < sbrEnvData->noOfEnvelopes; ++i) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->domain_vec[i], SBR_DIR_BITS); - } - for (i = 0; i < noOfNoiseEnvelopes; ++i) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->domain_vec_noise[i], SBR_DIR_BITS); - } - - return payloadBits; -} - - -/***************************************************************************** - - functionname: writeNoiseLevelData - description: writes bits corresponding to the noise-floor-level - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT -writeNoiseLevelData (HANDLE_SBR_ENV_DATA sbrEnvData, HANDLE_FDK_BITSTREAM hBitStream, INT coupling) -{ - INT j, i, payloadBits = 0; - INT nNoiseEnvelopes = sbrEnvData->noOfEnvelopes > 1 ? 2 : 1; - - for (i = 0; i < nNoiseEnvelopes; i++) { - switch (sbrEnvData->domain_vec_noise[i]) { - case FREQ: - if (coupling && sbrEnvData->balance) { - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->sbr_noise_levels[i * sbrEnvData->noOfnoisebands], - sbrEnvData->si_sbr_start_noise_bits_balance); - } else { - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->sbr_noise_levels[i * sbrEnvData->noOfnoisebands], - sbrEnvData->si_sbr_start_noise_bits); - } - - for (j = 1 + i * sbrEnvData->noOfnoisebands; j < (sbrEnvData->noOfnoisebands * (1 + i)); j++) { - if (coupling) { - if (sbrEnvData->balance) { - /* coupling && balance */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableNoiseBalanceFreqC[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV_BALANCE11], - sbrEnvData->hufftableNoiseBalanceFreqL[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV_BALANCE11]); - } else { - /* coupling && !balance */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableNoiseLevelFreqC[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11], - sbrEnvData->hufftableNoiseLevelFreqL[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11]); - } - } else { - /* !coupling */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableNoiseFreqC[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11], - sbrEnvData->hufftableNoiseFreqL[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11]); - } - } - break; - - case TIME: - for (j = i * sbrEnvData->noOfnoisebands; j < (sbrEnvData->noOfnoisebands * (1 + i)); j++) { - if (coupling) { - if (sbrEnvData->balance) { - /* coupling && balance */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableNoiseBalanceTimeC[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV_BALANCE11], - sbrEnvData->hufftableNoiseBalanceTimeL[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV_BALANCE11]); - } else { - /* coupling && !balance */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableNoiseLevelTimeC[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11], - sbrEnvData->hufftableNoiseLevelTimeL[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11]); - } - } else { - /* !coupling */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableNoiseLevelTimeC[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11], - sbrEnvData->hufftableNoiseLevelTimeL[sbrEnvData->sbr_noise_levels[j] + - CODE_BOOK_SCF_LAV11]); - } - } - break; - } - } - return payloadBits; -} - - -/***************************************************************************** - - functionname: writeEnvelopeData - description: writes bits corresponding to the envelope - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT -writeEnvelopeData (HANDLE_SBR_ENV_DATA sbrEnvData, HANDLE_FDK_BITSTREAM hBitStream, INT coupling) -{ - INT payloadBits = 0, j, i, delta; - - for (j = 0; j < sbrEnvData->noOfEnvelopes; j++) { /* loop over all envelopes */ - if (sbrEnvData->domain_vec[j] == FREQ) { - if (coupling && sbrEnvData->balance) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->ienvelope[j][0], sbrEnvData->si_sbr_start_env_bits_balance); - } else { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->ienvelope[j][0], sbrEnvData->si_sbr_start_env_bits); - } - } - - for (i = 1 - sbrEnvData->domain_vec[j]; i < sbrEnvData->noScfBands[j]; i++) { - delta = sbrEnvData->ienvelope[j][i]; - if (coupling && sbrEnvData->balance) { - FDK_ASSERT (fixp_abs (delta) <= sbrEnvData->codeBookScfLavBalance); - } else { - FDK_ASSERT (fixp_abs (delta) <= sbrEnvData->codeBookScfLav); - } - if (coupling) { - if (sbrEnvData->balance) { - if (sbrEnvData->domain_vec[j]) { - /* coupling && balance && TIME */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableBalanceTimeC[delta + sbrEnvData->codeBookScfLavBalance], - sbrEnvData->hufftableBalanceTimeL[delta + sbrEnvData->codeBookScfLavBalance]); - } else { - /* coupling && balance && FREQ */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableBalanceFreqC[delta + sbrEnvData->codeBookScfLavBalance], - sbrEnvData->hufftableBalanceFreqL[delta + sbrEnvData->codeBookScfLavBalance]); - } - } else { - if (sbrEnvData->domain_vec[j]) { - /* coupling && !balance && TIME */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableLevelTimeC[delta + sbrEnvData->codeBookScfLav], - sbrEnvData->hufftableLevelTimeL[delta + sbrEnvData->codeBookScfLav]); - } else { - /* coupling && !balance && FREQ */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableLevelFreqC[delta + sbrEnvData->codeBookScfLav], - sbrEnvData->hufftableLevelFreqL[delta + sbrEnvData->codeBookScfLav]); - } - } - } else { - if (sbrEnvData->domain_vec[j]) { - /* !coupling && TIME */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableTimeC[delta + sbrEnvData->codeBookScfLav], - sbrEnvData->hufftableTimeL[delta + sbrEnvData->codeBookScfLav]); - } else { - /* !coupling && FREQ */ - payloadBits += FDKwriteBits (hBitStream, - sbrEnvData->hufftableFreqC[delta + sbrEnvData->codeBookScfLav], - sbrEnvData->hufftableFreqL[delta + sbrEnvData->codeBookScfLav]); - } - } - } - } - return payloadBits; -} - - -/***************************************************************************** - - functionname: encodeExtendedData - description: writes bits corresponding to the extended data - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT encodeExtendedData (HANDLE_PARAMETRIC_STEREO hParametricStereo, - HANDLE_FDK_BITSTREAM hBitStream) -{ - INT extDataSize; - INT payloadBits = 0; - - extDataSize = getSbrExtendedDataSize(hParametricStereo); - - - if (extDataSize != 0) { - INT maxExtSize = (1<<SI_SBR_EXTENSION_SIZE_BITS) - 1; - INT writtenNoBits = 0; /* needed to byte align the extended data */ - - payloadBits += FDKwriteBits (hBitStream, 1, SI_SBR_EXTENDED_DATA_BITS); - FDK_ASSERT(extDataSize <= SBR_EXTENDED_DATA_MAX_CNT); - - if (extDataSize < maxExtSize) { - payloadBits += FDKwriteBits (hBitStream, extDataSize, SI_SBR_EXTENSION_SIZE_BITS); - } else { - payloadBits += FDKwriteBits (hBitStream, maxExtSize, SI_SBR_EXTENSION_SIZE_BITS); - payloadBits += FDKwriteBits (hBitStream, extDataSize - maxExtSize, SI_SBR_EXTENSION_ESC_COUNT_BITS); - } - - /* parametric coding signalled here? */ - if(hParametricStereo){ - writtenNoBits += FDKwriteBits (hBitStream, EXTENSION_ID_PS_CODING, SI_SBR_EXTENSION_ID_BITS); - writtenNoBits += FDKsbrEnc_PSEnc_WritePSData(hParametricStereo, hBitStream); - } - - payloadBits += writtenNoBits; - - /* byte alignment */ - writtenNoBits = writtenNoBits%8; - if(writtenNoBits) - payloadBits += FDKwriteBits(hBitStream, 0, (8 - writtenNoBits)); - } else { - payloadBits += FDKwriteBits (hBitStream, 0, SI_SBR_EXTENDED_DATA_BITS); - } - - return payloadBits; -} - - -/***************************************************************************** - - functionname: writeSyntheticCodingData - description: writes bits corresponding to the "synthetic-coding"-extension - returns: number of bits written - input: - output: - -*****************************************************************************/ -static INT writeSyntheticCodingData (HANDLE_SBR_ENV_DATA sbrEnvData, - HANDLE_FDK_BITSTREAM hBitStream) - -{ - INT i; - INT payloadBits = 0; - - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->addHarmonicFlag, 1); - - if (sbrEnvData->addHarmonicFlag) { - for (i = 0; i < sbrEnvData->noHarmonics; i++) { - payloadBits += FDKwriteBits (hBitStream, sbrEnvData->addHarmonic[i], 1); - } - } - - return payloadBits; -} - -/***************************************************************************** - - functionname: getSbrExtendedDataSize - description: counts the number of bits needed for encoding the - extended data (including extension id) - - returns: number of bits needed for the extended data - input: - output: - -*****************************************************************************/ -static INT -getSbrExtendedDataSize (HANDLE_PARAMETRIC_STEREO hParametricStereo) -{ - INT extDataBits = 0; - - /* add your new extended data counting methods here */ - - /* - no extended data - */ - - if(hParametricStereo){ - /* PS extended data */ - extDataBits += SI_SBR_EXTENSION_ID_BITS; - extDataBits += FDKsbrEnc_PSEnc_WritePSData(hParametricStereo, NULL); - } - - return (extDataBits+7) >> 3; -} - - - - - |