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Diffstat (limited to 'fdk-aac/libSACenc/src/sacenc_bitstream.cpp')
| -rw-r--r-- | fdk-aac/libSACenc/src/sacenc_bitstream.cpp | 826 |
1 files changed, 826 insertions, 0 deletions
diff --git a/fdk-aac/libSACenc/src/sacenc_bitstream.cpp b/fdk-aac/libSACenc/src/sacenc_bitstream.cpp new file mode 100644 index 0000000..dacfc27 --- /dev/null +++ b/fdk-aac/libSACenc/src/sacenc_bitstream.cpp @@ -0,0 +1,826 @@ +/* ----------------------------------------------------------------------------- +Software License for The Fraunhofer FDK AAC Codec Library for Android + +© 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. + +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 surround encoder library ************************* + + Author(s): + + Description: Encoder Library Interface + Bitstream Writer + +*******************************************************************************/ + +/* Includes ******************************************************************/ +#include "sacenc_bitstream.h" +#include "sacenc_const.h" + +#include "genericStds.h" +#include "common_fix.h" + +#include "FDK_matrixCalloc.h" +#include "sacenc_nlc_enc.h" + +/* Defines *******************************************************************/ +#define MAX_FREQ_RES_INDEX 8 +#define MAX_SAMPLING_FREQUENCY_INDEX 13 +#define SAMPLING_FREQUENCY_INDEX_ESCAPE 15 + +/* Data Types ****************************************************************/ +typedef struct { + SCHAR cld_old[SACENC_MAX_NUM_BOXES][MAX_NUM_BINS]; + SCHAR icc_old[SACENC_MAX_NUM_BOXES][MAX_NUM_BINS]; + UCHAR quantCoarseCldPrev[SACENC_MAX_NUM_BOXES][MAX_NUM_PARAMS]; + UCHAR quantCoarseIccPrev[SACENC_MAX_NUM_BOXES][MAX_NUM_PARAMS]; + +} PREV_OTTDATA; + +typedef struct { + PREV_OTTDATA prevOttData; + +} STATIC_SPATIALFRAME; + +typedef struct BSF_INSTANCE { + SPATIALSPECIFICCONFIG spatialSpecificConfig; + SPATIALFRAME frame; + STATIC_SPATIALFRAME prevFrameData; + +} BSF_INSTANCE; + +/* Constants *****************************************************************/ +static const INT SampleRateTable[MAX_SAMPLING_FREQUENCY_INDEX] = { + 96000, 88200, 64000, 48000, 44100, 32000, 24000, + 22050, 16000, 12000, 11025, 8000, 7350}; + +static const UCHAR FreqResBinTable_LD[MAX_FREQ_RES_INDEX] = {0, 23, 15, 12, + 9, 7, 5, 4}; +static const UCHAR FreqResStrideTable_LD[] = {1, 2, 5, 23}; + +/* Function / Class Declarations *********************************************/ + +/* Function / Class Definition ***********************************************/ +static FDK_SACENC_ERROR DuplicateLosslessData( + const INT startBox, const INT stopBox, + const LOSSLESSDATA *const hLosslessDataFrom, const INT setFrom, + LOSSLESSDATA *const hLosslessDataTo, const INT setTo) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((NULL == hLosslessDataFrom) || (NULL == hLosslessDataTo)) { + error = SACENC_INVALID_HANDLE; + } else { + int i; + + for (i = startBox; i < stopBox; i++) { + hLosslessDataTo->bsXXXDataMode[i][setTo] = + hLosslessDataFrom->bsXXXDataMode[i][setFrom]; + hLosslessDataTo->bsDataPair[i][setTo] = + hLosslessDataFrom->bsDataPair[i][setFrom]; + hLosslessDataTo->bsQuantCoarseXXX[i][setTo] = + hLosslessDataFrom->bsQuantCoarseXXX[i][setFrom]; + hLosslessDataTo->bsFreqResStrideXXX[i][setTo] = + hLosslessDataFrom->bsFreqResStrideXXX[i][setFrom]; + } + } + return error; +} + +FDK_SACENC_ERROR fdk_sacenc_duplicateParameterSet( + const SPATIALFRAME *const hFrom, const INT setFrom, SPATIALFRAME *const hTo, + const INT setTo) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((NULL == hFrom) || (NULL == hTo)) { + error = SACENC_INVALID_HANDLE; + } else { + int box; + /* Only Copy Parameter Set selective stuff */ + + /* OTT-Data */ + for (box = 0; box < SACENC_MAX_NUM_BOXES; box++) { + FDKmemcpy(hTo->ottData.cld[box][setTo], hFrom->ottData.cld[box][setFrom], + sizeof(hFrom->ottData.cld[0][0])); + FDKmemcpy(hTo->ottData.icc[box][setTo], hFrom->ottData.icc[box][setFrom], + sizeof(hFrom->ottData.icc[0][0])); + } + + /* LOSSLESSDATA */ + DuplicateLosslessData(0, SACENC_MAX_NUM_BOXES, &hFrom->CLDLosslessData, + setFrom, &hTo->CLDLosslessData, setTo); + DuplicateLosslessData(0, SACENC_MAX_NUM_BOXES, &hFrom->ICCLosslessData, + setFrom, &hTo->ICCLosslessData, setTo); + + } /* valid handle */ + + return error; +} + +/* set frame defaults */ +static void clearFrame(SPATIALFRAME *const pFrame) { + FDKmemclear(pFrame, sizeof(SPATIALFRAME)); + + pFrame->bsIndependencyFlag = 1; + pFrame->framingInfo.numParamSets = 1; +} + +static void fine2coarse(SCHAR *const data, const DATA_TYPE dataType, + const INT startBand, const INT numBands) { + int i; + if (dataType == t_CLD) { + for (i = startBand; i < startBand + numBands; i++) { + data[i] /= 2; + } + } else { + for (i = startBand; i < startBand + numBands; i++) { + data[i] >>= 1; + } + } +} + +static void coarse2fine(SCHAR *const data, const DATA_TYPE dataType, + const INT startBand, const INT numBands) { + int i; + + for (i = startBand; i < startBand + numBands; i++) { + data[i] <<= 1; + } + + if (dataType == t_CLD) { + for (i = startBand; i < startBand + numBands; i++) { + if (data[i] == -14) { + data[i] = -15; + } else if (data[i] == 14) { + data[i] = 15; + } + } + } /* (dataType == t_CLD) */ +} + +static UCHAR getBsFreqResStride(const INT index) { + const UCHAR *pFreqResStrideTable = NULL; + int freqResStrideTableSize = 0; + + pFreqResStrideTable = FreqResStrideTable_LD; + freqResStrideTableSize = + sizeof(FreqResStrideTable_LD) / sizeof(*FreqResStrideTable_LD); + + return (((NULL != pFreqResStrideTable) && (index >= 0) && + (index < freqResStrideTableSize)) + ? pFreqResStrideTable[index] + : 1); +} + +/* write data to bitstream */ +static void ecData(HANDLE_FDK_BITSTREAM bitstream, + SCHAR data[MAX_NUM_PARAMS][MAX_NUM_BINS], + SCHAR oldData[MAX_NUM_BINS], + UCHAR quantCoarseXXXprev[MAX_NUM_PARAMS], + LOSSLESSDATA *const losslessData, const DATA_TYPE dataType, + const INT paramIdx, const INT numParamSets, + const INT independencyFlag, const INT startBand, + const INT stopBand, const INT defaultValue) { + int ps, pb, strOffset, pbStride, dataBands, i; + int aStrides[MAX_NUM_BINS + 1] = {0}; + SHORT cmpIdxData[2][MAX_NUM_BINS] = {{0}}; + SHORT cmpOldData[MAX_NUM_BINS] = {0}; + + /* bsXXXDataMode */ + if (independencyFlag || (losslessData->bsQuantCoarseXXX[paramIdx][0] != + quantCoarseXXXprev[paramIdx])) { + losslessData->bsXXXDataMode[paramIdx][0] = FINECOARSE; + } else { + losslessData->bsXXXDataMode[paramIdx][0] = KEEP; + for (i = startBand; i < stopBand; i++) { + if (data[0][i] != oldData[i]) { + losslessData->bsXXXDataMode[paramIdx][0] = FINECOARSE; + break; + } + } + } + + FDKwriteBits(bitstream, losslessData->bsXXXDataMode[paramIdx][0], 2); + + for (ps = 1; ps < numParamSets; ps++) { + if (losslessData->bsQuantCoarseXXX[paramIdx][ps] != + losslessData->bsQuantCoarseXXX[paramIdx][ps - 1]) { + losslessData->bsXXXDataMode[paramIdx][ps] = FINECOARSE; + } else { + losslessData->bsXXXDataMode[paramIdx][ps] = KEEP; + for (i = startBand; i < stopBand; i++) { + if (data[ps][i] != data[ps - 1][i]) { + losslessData->bsXXXDataMode[paramIdx][ps] = FINECOARSE; + break; + } + } + } + + FDKwriteBits(bitstream, losslessData->bsXXXDataMode[paramIdx][ps], 2); + } /* for ps */ + + /* Create data pairs if possible */ + for (ps = 0; ps < (numParamSets - 1); ps++) { + if (losslessData->bsXXXDataMode[paramIdx][ps] == FINECOARSE) { + /* Check if next parameter set is FINCOARSE */ + if (losslessData->bsXXXDataMode[paramIdx][ps + 1] == FINECOARSE) { + /* We have to check if ps and ps+1 use the same bsXXXQuantMode */ + /* and also have the same stride */ + if ((losslessData->bsQuantCoarseXXX[paramIdx][ps + 1] == + losslessData->bsQuantCoarseXXX[paramIdx][ps]) && + (losslessData->bsFreqResStrideXXX[paramIdx][ps + 1] == + losslessData->bsFreqResStrideXXX[paramIdx][ps])) { + losslessData->bsDataPair[paramIdx][ps] = 1; + losslessData->bsDataPair[paramIdx][ps + 1] = 1; + + /* We have a data pair -> Jump to the ps after next ps*/ + ps++; + continue; + } + } + /* dataMode of next ps is not FINECOARSE or does not use the same + * bsXXXQuantMode/stride */ + /* -> no dataPair possible */ + losslessData->bsDataPair[paramIdx][ps] = 0; + + /* Initialize ps after next ps to Zero (only important for the last + * parameter set) */ + losslessData->bsDataPair[paramIdx][ps + 1] = 0; + } else { + /* No FINECOARSE -> no data pair possible */ + losslessData->bsDataPair[paramIdx][ps] = 0; + + /* Initialize ps after next ps to Zero (only important for the last + * parameter set) */ + losslessData->bsDataPair[paramIdx][ps + 1] = 0; + } + } /* for ps */ + + for (ps = 0; ps < numParamSets; ps++) { + if (losslessData->bsXXXDataMode[paramIdx][ps] == DEFAULT) { + /* Prepare old data */ + for (i = startBand; i < stopBand; i++) { + oldData[i] = defaultValue; + } + quantCoarseXXXprev[paramIdx] = 0; /* Default data are always fine */ + } + + if (losslessData->bsXXXDataMode[paramIdx][ps] == FINECOARSE) { + FDKwriteBits(bitstream, losslessData->bsDataPair[paramIdx][ps], 1); + FDKwriteBits(bitstream, losslessData->bsQuantCoarseXXX[paramIdx][ps], 1); + FDKwriteBits(bitstream, losslessData->bsFreqResStrideXXX[paramIdx][ps], + 2); + + if (losslessData->bsQuantCoarseXXX[paramIdx][ps] != + quantCoarseXXXprev[paramIdx]) { + if (quantCoarseXXXprev[paramIdx]) { + coarse2fine(oldData, dataType, startBand, stopBand - startBand); + } else { + fine2coarse(oldData, dataType, startBand, stopBand - startBand); + } + } + + /* Handle strides */ + pbStride = + getBsFreqResStride(losslessData->bsFreqResStrideXXX[paramIdx][ps]); + dataBands = (stopBand - startBand - 1) / pbStride + 1; + + aStrides[0] = startBand; + for (pb = 1; pb <= dataBands; pb++) { + aStrides[pb] = aStrides[pb - 1] + pbStride; + } + + strOffset = 0; + while (aStrides[dataBands] > stopBand) { + if (strOffset < dataBands) { + strOffset++; + } + for (i = strOffset; i <= dataBands; i++) { + aStrides[i]--; + } + } /* while */ + + for (pb = 0; pb < dataBands; pb++) { + cmpOldData[startBand + pb] = oldData[aStrides[pb]]; + cmpIdxData[0][startBand + pb] = data[ps][aStrides[pb]]; + + if (losslessData->bsDataPair[paramIdx][ps]) { + cmpIdxData[1][startBand + pb] = data[ps + 1][aStrides[pb]]; + } + } /* for pb*/ + + /* Finally encode */ + if (losslessData->bsDataPair[paramIdx][ps]) { + fdk_sacenc_ecDataPairEnc(bitstream, cmpIdxData, cmpOldData, dataType, 0, + startBand, dataBands, + losslessData->bsQuantCoarseXXX[paramIdx][ps], + independencyFlag && (ps == 0)); + } else { + fdk_sacenc_ecDataSingleEnc(bitstream, cmpIdxData, cmpOldData, dataType, + 0, startBand, dataBands, + losslessData->bsQuantCoarseXXX[paramIdx][ps], + independencyFlag && (ps == 0)); + } + + /* Overwrite old data */ + for (i = startBand; i < stopBand; i++) { + if (losslessData->bsDataPair[paramIdx][ps]) { + oldData[i] = data[ps + 1][i]; + } else { + oldData[i] = data[ps][i]; + } + } + + quantCoarseXXXprev[paramIdx] = + losslessData->bsQuantCoarseXXX[paramIdx][ps]; + + /* Jump forward if we have encoded a data pair */ + if (losslessData->bsDataPair[paramIdx][ps]) { + ps++; + } + + } /* if (losslessData->bsXXXDataMode[paramIdx][ps] == FINECOARSE ) */ + } /* for ps */ +} + +/****************************************************************************/ +/* Bitstream formatter interface functions */ +/****************************************************************************/ +static FDK_SACENC_ERROR getBsFreqResIndex(const INT numBands, + INT *const pbsFreqResIndex) { + FDK_SACENC_ERROR error = SACENC_OK; + + if (NULL == pbsFreqResIndex) { + error = SACENC_INVALID_HANDLE; + } else { + const UCHAR *pFreqResBinTable = FreqResBinTable_LD; + int i; + *pbsFreqResIndex = -1; + + for (i = 0; i < MAX_FREQ_RES_INDEX; i++) { + if (numBands == pFreqResBinTable[i]) { + *pbsFreqResIndex = i; + break; + } + } + if (*pbsFreqResIndex < 0 || *pbsFreqResIndex >= MAX_FREQ_RES_INDEX) { + error = SACENC_INVALID_CONFIG; + } + } + return error; +} + +static FDK_SACENC_ERROR getSamplingFrequencyIndex( + const INT bsSamplingFrequency, INT *const pbsSamplingFrequencyIndex) { + FDK_SACENC_ERROR error = SACENC_OK; + + if (NULL == pbsSamplingFrequencyIndex) { + error = SACENC_INVALID_HANDLE; + } else { + int i; + *pbsSamplingFrequencyIndex = SAMPLING_FREQUENCY_INDEX_ESCAPE; + + for (i = 0; i < MAX_SAMPLING_FREQUENCY_INDEX; i++) { + if (bsSamplingFrequency == SampleRateTable[i]) { /*spatial sampling rate*/ + *pbsSamplingFrequencyIndex = i; + break; + } + } + } + return error; +} + +/* destroy encoder instance */ +FDK_SACENC_ERROR fdk_sacenc_destroySpatialBitstreamEncoder( + HANDLE_BSF_INSTANCE *selfPtr) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((selfPtr == NULL) || (*selfPtr == NULL)) { + error = SACENC_INVALID_HANDLE; + } else { + if (*selfPtr != NULL) { + FDK_FREE_MEMORY_1D(*selfPtr); + } + } + return error; +} + +/* create encoder instance */ +FDK_SACENC_ERROR fdk_sacenc_createSpatialBitstreamEncoder( + HANDLE_BSF_INSTANCE *selfPtr) { + FDK_SACENC_ERROR error = SACENC_OK; + + if (NULL == selfPtr) { + error = SACENC_INVALID_HANDLE; + } else { + /* allocate encoder struct */ + FDK_ALLOCATE_MEMORY_1D(*selfPtr, 1, BSF_INSTANCE); + } + return error; + +bail: + fdk_sacenc_destroySpatialBitstreamEncoder(selfPtr); + return ((SACENC_OK == error) ? SACENC_MEMORY_ERROR : error); +} + +/* init encoder instance */ +FDK_SACENC_ERROR fdk_sacenc_initSpatialBitstreamEncoder( + HANDLE_BSF_INSTANCE selfPtr) { + FDK_SACENC_ERROR error = SACENC_OK; + + if (selfPtr == NULL) { + error = SACENC_INVALID_HANDLE; + } else { + /* init/clear */ + clearFrame(&selfPtr->frame); + + } /* valid handle */ + return error; +} + +/* get SpatialSpecificConfig struct */ +SPATIALSPECIFICCONFIG *fdk_sacenc_getSpatialSpecificConfig( + HANDLE_BSF_INSTANCE selfPtr) { + return ((selfPtr == NULL) ? NULL : &(selfPtr->spatialSpecificConfig)); +} + +/* write SpatialSpecificConfig to stream */ +FDK_SACENC_ERROR fdk_sacenc_writeSpatialSpecificConfig( + SPATIALSPECIFICCONFIG *const spatialSpecificConfig, + UCHAR *const pOutputBuffer, const INT outputBufferSize, + INT *const pnOutputBits) { + FDK_SACENC_ERROR error = SACENC_OK; + INT bsSamplingFrequencyIndex = 0; + INT bsFreqRes = 0; + + if ((spatialSpecificConfig == NULL) || (pOutputBuffer == NULL) || + (pnOutputBits == NULL)) { + error = SACENC_INVALID_HANDLE; + } else { + FDK_BITSTREAM bitstream; + + /* Find FreqRes */ + if (SACENC_OK != (error = getBsFreqResIndex(spatialSpecificConfig->numBands, + &bsFreqRes))) + goto bail; + + /* Find SamplingFrequencyIndex */ + if (SACENC_OK != (error = getSamplingFrequencyIndex( + spatialSpecificConfig->bsSamplingFrequency, + &bsSamplingFrequencyIndex))) + goto bail; + + /* bind extern buffer to bitstream handle */ + FDKinitBitStream(&bitstream, pOutputBuffer, outputBufferSize, 0, BS_WRITER); + + /****************************************************************************/ + /* write to bitstream */ + + FDKwriteBits(&bitstream, bsSamplingFrequencyIndex, 4); + + if (bsSamplingFrequencyIndex == 15) { + FDKwriteBits(&bitstream, spatialSpecificConfig->bsSamplingFrequency, 24); + } + + FDKwriteBits(&bitstream, spatialSpecificConfig->bsFrameLength, 5); + + FDKwriteBits(&bitstream, bsFreqRes, 3); + FDKwriteBits(&bitstream, spatialSpecificConfig->bsTreeConfig, 4); + FDKwriteBits(&bitstream, spatialSpecificConfig->bsQuantMode, 2); + + FDKwriteBits(&bitstream, 0, 1); /* bsArbitraryDownmix */ + + FDKwriteBits(&bitstream, spatialSpecificConfig->bsFixedGainDMX, 3); + + FDKwriteBits(&bitstream, TEMPSHAPE_OFF, 2); + FDKwriteBits(&bitstream, spatialSpecificConfig->bsDecorrConfig, 2); + + FDKbyteAlign(&bitstream, 0); /* byte alignment */ + + /* return number of valid bits in bitstream */ + if ((*pnOutputBits = FDKgetValidBits(&bitstream)) > + (outputBufferSize * 8)) { + error = SACENC_INVALID_CONFIG; + goto bail; + } + + /* terminate buffer with alignment */ + FDKbyteAlign(&bitstream, 0); + + } /* valid handle */ + +bail: + return error; +} + +/* get SpatialFrame struct */ +SPATIALFRAME *fdk_sacenc_getSpatialFrame(HANDLE_BSF_INSTANCE selfPtr, + const SPATIALFRAME_TYPE frameType) { + int idx = -1; + + switch (frameType) { + case READ_SPATIALFRAME: + case WRITE_SPATIALFRAME: + idx = 0; + break; + default: + idx = -1; /* invalid configuration */ + } /* switch frameType */ + + return (((selfPtr == NULL) || (idx == -1)) ? NULL : &selfPtr->frame); +} + +static FDK_SACENC_ERROR writeFramingInfo(HANDLE_FDK_BITSTREAM hBitstream, + const FRAMINGINFO *const pFramingInfo, + const INT frameLength) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((hBitstream == NULL) || (pFramingInfo == NULL)) { + error = SACENC_INVALID_HANDLE; + } else { + FDKwriteBits(hBitstream, pFramingInfo->bsFramingType, 1); + FDKwriteBits(hBitstream, pFramingInfo->numParamSets - 1, 1); + + if (pFramingInfo->bsFramingType) { + int ps = 0; + int numParamSets = pFramingInfo->numParamSets; + + { + for (ps = 0; ps < numParamSets; ps++) { + int bitsParamSlot = 0; + while ((1 << bitsParamSlot) < (frameLength + 1)) bitsParamSlot++; + if (bitsParamSlot > 0) + FDKwriteBits(hBitstream, pFramingInfo->bsParamSlots[ps], + bitsParamSlot); + } + } + } /* pFramingInfo->bsFramingType */ + } /* valid handle */ + + return error; +} + +static FDK_SACENC_ERROR writeSmgData(HANDLE_FDK_BITSTREAM hBitstream, + const SMGDATA *const pSmgData, + const INT numParamSets, + const INT dataBands) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((hBitstream == NULL) || (pSmgData == NULL)) { + error = SACENC_INVALID_HANDLE; + } else { + int i, j; + + for (i = 0; i < numParamSets; i++) { + FDKwriteBits(hBitstream, pSmgData->bsSmoothMode[i], 2); + + if (pSmgData->bsSmoothMode[i] >= 2) { + FDKwriteBits(hBitstream, pSmgData->bsSmoothTime[i], 2); + } + if (pSmgData->bsSmoothMode[i] == 3) { + const int stride = getBsFreqResStride(pSmgData->bsFreqResStride[i]); + FDKwriteBits(hBitstream, pSmgData->bsFreqResStride[i], 2); + for (j = 0; j < dataBands; j += stride) { + FDKwriteBits(hBitstream, pSmgData->bsSmgData[i][j], 1); + } + } + } /* for i */ + } /* valid handle */ + + return error; +} + +static FDK_SACENC_ERROR writeOttData( + HANDLE_FDK_BITSTREAM hBitstream, PREV_OTTDATA *const pPrevOttData, + OTTDATA *const pOttData, const OTTCONFIG ottConfig[SACENC_MAX_NUM_BOXES], + LOSSLESSDATA *const pCLDLosslessData, LOSSLESSDATA *const pICCLosslessData, + const INT numOttBoxes, const INT numBands, const INT numParamSets, + const INT bsIndependencyFlag) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((hBitstream == NULL) || (pPrevOttData == NULL) || (pOttData == NULL) || + (ottConfig == NULL) || (pCLDLosslessData == NULL) || + (pICCLosslessData == NULL)) { + error = SACENC_INVALID_HANDLE; + } else { + int i; + for (i = 0; i < numOttBoxes; i++) { + ecData(hBitstream, pOttData->cld[i], pPrevOttData->cld_old[i], + pPrevOttData->quantCoarseCldPrev[i], pCLDLosslessData, t_CLD, i, + numParamSets, bsIndependencyFlag, 0, ottConfig[i].bsOttBands, 15); + } + { + for (i = 0; i < numOttBoxes; i++) { + { + ecData(hBitstream, pOttData->icc[i], pPrevOttData->icc_old[i], + pPrevOttData->quantCoarseIccPrev[i], pICCLosslessData, t_ICC, + i, numParamSets, bsIndependencyFlag, 0, numBands, 0); + } + } /* for i */ + } + } /* valid handle */ + + return error; +} + +/* write extension frame data to stream */ +static FDK_SACENC_ERROR WriteSpatialExtensionFrame( + HANDLE_FDK_BITSTREAM bitstream, HANDLE_BSF_INSTANCE self) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((bitstream == NULL) || (self == NULL)) { + error = SACENC_INVALID_HANDLE; + } else { + FDKbyteAlign(bitstream, 0); + } /* valid handle */ + + return error; +} + +/* write frame data to stream */ +FDK_SACENC_ERROR fdk_sacenc_writeSpatialFrame(UCHAR *const pOutputBuffer, + const INT outputBufferSize, + INT *const pnOutputBits, + HANDLE_BSF_INSTANCE selfPtr) { + FDK_SACENC_ERROR error = SACENC_OK; + + if ((pOutputBuffer == NULL) || (pnOutputBits == NULL) || (selfPtr == NULL)) { + error = SACENC_INVALID_HANDLE; + } else { + SPATIALFRAME *frame = NULL; + SPATIALSPECIFICCONFIG *config = NULL; + FDK_BITSTREAM bitstream; + + int i, j, numParamSets, numOttBoxes; + + if ((NULL == + (frame = fdk_sacenc_getSpatialFrame(selfPtr, READ_SPATIALFRAME))) || + (NULL == (config = &(selfPtr->spatialSpecificConfig)))) { + error = SACENC_INVALID_HANDLE; + goto bail; + } + + numOttBoxes = selfPtr->spatialSpecificConfig.treeDescription.numOttBoxes; + + numParamSets = frame->framingInfo.numParamSets; + + if (frame->bUseBBCues) { + for (i = 0; i < SACENC_MAX_NUM_BOXES; i++) { + /* If a transient was detected, force only the second ps broad band */ + if (numParamSets == 1) { + frame->CLDLosslessData.bsFreqResStrideXXX[i][0] = 3; + frame->ICCLosslessData.bsFreqResStrideXXX[i][0] = 3; + } else { + for (j = 1; j < MAX_NUM_PARAMS; j++) { + frame->CLDLosslessData.bsFreqResStrideXXX[i][j] = 3; + frame->ICCLosslessData.bsFreqResStrideXXX[i][j] = 3; + } + } + } + } /* frame->bUseBBCues */ + + /* bind extern buffer to bitstream handle */ + FDKinitBitStream(&bitstream, pOutputBuffer, outputBufferSize, 0, BS_WRITER); + + if (SACENC_OK != (error = writeFramingInfo( + &bitstream, &(frame->framingInfo), + selfPtr->spatialSpecificConfig.bsFrameLength))) { + goto bail; + } + + /* write bsIndependencyFlag */ + FDKwriteBits(&bitstream, frame->bsIndependencyFlag, 1); + + /* write spatial data to bitstream */ + if (SACENC_OK != + (error = writeOttData(&bitstream, &selfPtr->prevFrameData.prevOttData, + &frame->ottData, config->ottConfig, + &frame->CLDLosslessData, &frame->ICCLosslessData, + numOttBoxes, config->numBands, numParamSets, + frame->bsIndependencyFlag))) { + goto bail; + } + if (SACENC_OK != (error = writeSmgData(&bitstream, &frame->smgData, + numParamSets, config->numBands))) { + goto bail; + } + + /* byte alignment */ + FDKbyteAlign(&bitstream, 0); + + /* Write SpatialExtensionFrame */ + if (SACENC_OK != + (error = WriteSpatialExtensionFrame(&bitstream, selfPtr))) { + goto bail; + } + + if (NULL == + (frame = fdk_sacenc_getSpatialFrame(selfPtr, WRITE_SPATIALFRAME))) { + error = SACENC_INVALID_HANDLE; + goto bail; + } + + clearFrame(frame); + + /* return number of valid bits in bitstream */ + if ((*pnOutputBits = FDKgetValidBits(&bitstream)) > + (outputBufferSize * 8)) { + error = SACENC_INVALID_CONFIG; + goto bail; + } + + /* terminate buffer with alignment */ + FDKbyteAlign(&bitstream, 0); + + } /* valid handle */ + +bail: + return error; +} |