| /* ----------------------------------------------------------------------------- |
| 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 |
| ----------------------------------------------------------------------------- */ |
| |
| /**************************** AAC encoder library ****************************** |
| |
| Author(s): M. Werner |
| |
| Description: Bitstream encoder |
| |
| *******************************************************************************/ |
| |
| #include "bitenc.h" |
| #include "bit_cnt.h" |
| #include "dyn_bits.h" |
| #include "qc_data.h" |
| #include "interface.h" |
| #include "aacEnc_ram.h" |
| |
| #include "tpenc_lib.h" |
| |
| #include "FDK_tools_rom.h" /* needed for the bitstream syntax tables */ |
| |
| static const int globalGainOffset = 100; |
| static const int icsReservedBit = 0; |
| static const int noiseOffset = 90; |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_encodeSpectralData |
| description: encode spectral data |
| returns: the number of written bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeSpectralData(INT *sfbOffset, |
| SECTION_DATA *sectionData, |
| SHORT *quantSpectrum, |
| HANDLE_FDK_BITSTREAM hBitStream) { |
| INT i, sfb; |
| INT dbgVal = FDKgetValidBits(hBitStream); |
| |
| for (i = 0; i < sectionData->noOfSections; i++) { |
| if (sectionData->huffsection[i].codeBook != CODE_BOOK_PNS_NO) { |
| /* huffencode spectral data for this huffsection */ |
| INT tmp = sectionData->huffsection[i].sfbStart + |
| sectionData->huffsection[i].sfbCnt; |
| for (sfb = sectionData->huffsection[i].sfbStart; sfb < tmp; sfb++) { |
| FDKaacEnc_codeValues(quantSpectrum + sfbOffset[sfb], |
| sfbOffset[sfb + 1] - sfbOffset[sfb], |
| sectionData->huffsection[i].codeBook, hBitStream); |
| } |
| } |
| } |
| return (FDKgetValidBits(hBitStream) - dbgVal); |
| } |
| |
| /***************************************************************************** |
| |
| functionname:FDKaacEnc_encodeGlobalGain |
| description: encodes Global Gain (common scale factor) |
| returns: the number of static bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeGlobalGain(INT globalGain, INT scalefac, |
| HANDLE_FDK_BITSTREAM hBitStream, |
| INT mdctScale) { |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, |
| globalGain - scalefac + globalGainOffset - |
| 4 * (LOG_NORM_PCM - mdctScale), |
| 8); |
| } |
| return (8); |
| } |
| |
| /***************************************************************************** |
| |
| functionname:FDKaacEnc_encodeIcsInfo |
| description: encodes Ics Info |
| returns: the number of static bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| |
| static INT FDKaacEnc_encodeIcsInfo(INT blockType, INT windowShape, |
| INT groupingMask, INT maxSfbPerGroup, |
| HANDLE_FDK_BITSTREAM hBitStream, |
| UINT syntaxFlags) { |
| INT statBits; |
| |
| if (blockType == SHORT_WINDOW) { |
| statBits = 8 + TRANS_FAC - 1; |
| } else { |
| if (syntaxFlags & AC_ELD) { |
| statBits = 6; |
| } else { |
| statBits = (!(syntaxFlags & AC_SCALABLE)) ? 11 : 10; |
| } |
| } |
| |
| if (hBitStream != NULL) { |
| if (!(syntaxFlags & AC_ELD)) { |
| FDKwriteBits(hBitStream, icsReservedBit, 1); |
| FDKwriteBits(hBitStream, blockType, 2); |
| FDKwriteBits(hBitStream, |
| (windowShape == LOL_WINDOW) ? KBD_WINDOW : windowShape, 1); |
| } |
| |
| switch (blockType) { |
| case LONG_WINDOW: |
| case START_WINDOW: |
| case STOP_WINDOW: |
| FDKwriteBits(hBitStream, maxSfbPerGroup, 6); |
| |
| if (!(syntaxFlags & |
| (AC_SCALABLE | AC_ELD))) { /* If not scalable syntax then ... */ |
| /* No predictor data present */ |
| FDKwriteBits(hBitStream, 0, 1); |
| } |
| break; |
| |
| case SHORT_WINDOW: |
| FDKwriteBits(hBitStream, maxSfbPerGroup, 4); |
| |
| /* Write grouping bits */ |
| FDKwriteBits(hBitStream, groupingMask, TRANS_FAC - 1); |
| break; |
| } |
| } |
| |
| return (statBits); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_encodeSectionData |
| description: encode section data (common Huffman codebooks for adjacent |
| SFB's) |
| returns: none |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeSectionData(SECTION_DATA *sectionData, |
| HANDLE_FDK_BITSTREAM hBitStream, |
| UINT useVCB11) { |
| if (hBitStream != NULL) { |
| INT sectEscapeVal = 0, sectLenBits = 0; |
| INT sectLen; |
| INT i; |
| INT dbgVal = FDKgetValidBits(hBitStream); |
| INT sectCbBits = 4; |
| |
| switch (sectionData->blockType) { |
| case LONG_WINDOW: |
| case START_WINDOW: |
| case STOP_WINDOW: |
| sectEscapeVal = SECT_ESC_VAL_LONG; |
| sectLenBits = SECT_BITS_LONG; |
| break; |
| |
| case SHORT_WINDOW: |
| sectEscapeVal = SECT_ESC_VAL_SHORT; |
| sectLenBits = SECT_BITS_SHORT; |
| break; |
| } |
| |
| for (i = 0; i < sectionData->noOfSections; i++) { |
| INT codeBook = sectionData->huffsection[i].codeBook; |
| |
| FDKwriteBits(hBitStream, codeBook, sectCbBits); |
| |
| { |
| sectLen = sectionData->huffsection[i].sfbCnt; |
| |
| while (sectLen >= sectEscapeVal) { |
| FDKwriteBits(hBitStream, sectEscapeVal, sectLenBits); |
| sectLen -= sectEscapeVal; |
| } |
| FDKwriteBits(hBitStream, sectLen, sectLenBits); |
| } |
| } |
| return (FDKgetValidBits(hBitStream) - dbgVal); |
| } |
| return (0); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_encodeScaleFactorData |
| description: encode DPCM coded scale factors |
| returns: none |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeScaleFactorData(UINT *maxValueInSfb, |
| SECTION_DATA *sectionData, |
| INT *scalefac, |
| HANDLE_FDK_BITSTREAM hBitStream, |
| INT *RESTRICT noiseNrg, |
| const INT *isScale, INT globalGain) { |
| if (hBitStream != NULL) { |
| INT i, j, lastValScf, deltaScf; |
| INT deltaPns; |
| INT lastValPns = 0; |
| INT noisePCMFlag = TRUE; |
| INT lastValIs; |
| |
| INT dbgVal = FDKgetValidBits(hBitStream); |
| |
| lastValScf = scalefac[sectionData->firstScf]; |
| lastValPns = globalGain - scalefac[sectionData->firstScf] + |
| globalGainOffset - 4 * LOG_NORM_PCM - noiseOffset; |
| lastValIs = 0; |
| |
| for (i = 0; i < sectionData->noOfSections; i++) { |
| if (sectionData->huffsection[i].codeBook != CODE_BOOK_ZERO_NO) { |
| if ((sectionData->huffsection[i].codeBook == |
| CODE_BOOK_IS_OUT_OF_PHASE_NO) || |
| (sectionData->huffsection[i].codeBook == |
| CODE_BOOK_IS_IN_PHASE_NO)) { |
| INT sfbStart = sectionData->huffsection[i].sfbStart; |
| INT tmp = sfbStart + sectionData->huffsection[i].sfbCnt; |
| for (j = sfbStart; j < tmp; j++) { |
| INT deltaIs = isScale[j] - lastValIs; |
| lastValIs = isScale[j]; |
| if (FDKaacEnc_codeScalefactorDelta(deltaIs, hBitStream)) { |
| return (1); |
| } |
| } /* sfb */ |
| } else if (sectionData->huffsection[i].codeBook == CODE_BOOK_PNS_NO) { |
| INT sfbStart = sectionData->huffsection[i].sfbStart; |
| INT tmp = sfbStart + sectionData->huffsection[i].sfbCnt; |
| for (j = sfbStart; j < tmp; j++) { |
| deltaPns = noiseNrg[j] - lastValPns; |
| lastValPns = noiseNrg[j]; |
| |
| if (noisePCMFlag) { |
| FDKwriteBits(hBitStream, deltaPns + (1 << (PNS_PCM_BITS - 1)), |
| PNS_PCM_BITS); |
| noisePCMFlag = FALSE; |
| } else { |
| if (FDKaacEnc_codeScalefactorDelta(deltaPns, hBitStream)) { |
| return (1); |
| } |
| } |
| } /* sfb */ |
| } else { |
| INT tmp = sectionData->huffsection[i].sfbStart + |
| sectionData->huffsection[i].sfbCnt; |
| for (j = sectionData->huffsection[i].sfbStart; j < tmp; j++) { |
| /* |
| check if we can repeat the last value to save bits |
| */ |
| if (maxValueInSfb[j] == 0) |
| deltaScf = 0; |
| else { |
| deltaScf = -(scalefac[j] - lastValScf); |
| lastValScf = scalefac[j]; |
| } |
| if (FDKaacEnc_codeScalefactorDelta(deltaScf, hBitStream)) { |
| return (1); |
| } |
| } /* sfb */ |
| } /* code scalefactor */ |
| } /* sectionData->huffsection[i].codeBook != CODE_BOOK_ZERO_NO */ |
| } /* section loop */ |
| |
| return (FDKgetValidBits(hBitStream) - dbgVal); |
| } /* if (hBitStream != NULL) */ |
| |
| return (0); |
| } |
| |
| /***************************************************************************** |
| |
| functionname:encodeMsInfo |
| description: encodes MS-Stereo Info |
| returns: the number of static bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeMSInfo(INT sfbCnt, INT grpSfb, INT maxSfb, |
| INT msDigest, INT *jsFlags, |
| HANDLE_FDK_BITSTREAM hBitStream) { |
| INT sfb, sfbOff, msBits = 0; |
| |
| if (hBitStream != NULL) { |
| switch (msDigest) { |
| case MS_NONE: |
| FDKwriteBits(hBitStream, SI_MS_MASK_NONE, 2); |
| msBits += 2; |
| break; |
| |
| case MS_ALL: |
| FDKwriteBits(hBitStream, SI_MS_MASK_ALL, 2); |
| msBits += 2; |
| break; |
| |
| case MS_SOME: |
| FDKwriteBits(hBitStream, SI_MS_MASK_SOME, 2); |
| msBits += 2; |
| for (sfbOff = 0; sfbOff < sfbCnt; sfbOff += grpSfb) { |
| for (sfb = 0; sfb < maxSfb; sfb++) { |
| if (jsFlags[sfbOff + sfb] & MS_ON) { |
| FDKwriteBits(hBitStream, 1, 1); |
| } else { |
| FDKwriteBits(hBitStream, 0, 1); |
| } |
| msBits += 1; |
| } |
| } |
| break; |
| } |
| } else { |
| msBits += 2; |
| if (msDigest == MS_SOME) { |
| for (sfbOff = 0; sfbOff < sfbCnt; sfbOff += grpSfb) { |
| for (sfb = 0; sfb < maxSfb; sfb++) { |
| msBits += 1; |
| } |
| } |
| } |
| } |
| return (msBits); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_encodeTnsDataPresent |
| description: encode TNS data (filter order, coeffs, ..) |
| returns: the number of static bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeTnsDataPresent(TNS_INFO *tnsInfo, INT blockType, |
| HANDLE_FDK_BITSTREAM hBitStream) { |
| if ((hBitStream != NULL) && (tnsInfo != NULL)) { |
| INT i, tnsPresent = 0; |
| INT numOfWindows = (blockType == SHORT_WINDOW ? TRANS_FAC : 1); |
| |
| for (i = 0; i < numOfWindows; i++) { |
| if (tnsInfo->numOfFilters[i] != 0) { |
| tnsPresent = 1; |
| break; |
| } |
| } |
| |
| if (tnsPresent == 0) { |
| FDKwriteBits(hBitStream, 0, 1); |
| } else { |
| FDKwriteBits(hBitStream, 1, 1); |
| } |
| } |
| return (1); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_encodeTnsData |
| description: encode TNS data (filter order, coeffs, ..) |
| returns: the number of static bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeTnsData(TNS_INFO *tnsInfo, INT blockType, |
| HANDLE_FDK_BITSTREAM hBitStream) { |
| INT tnsBits = 0; |
| |
| if (tnsInfo != NULL) { |
| INT i, j, k; |
| INT tnsPresent = 0; |
| INT coefBits; |
| INT numOfWindows = (blockType == SHORT_WINDOW ? TRANS_FAC : 1); |
| |
| for (i = 0; i < numOfWindows; i++) { |
| if (tnsInfo->numOfFilters[i] != 0) { |
| tnsPresent = 1; |
| } |
| } |
| |
| if (hBitStream != NULL) { |
| if (tnsPresent == 1) { /* there is data to be written*/ |
| for (i = 0; i < numOfWindows; i++) { |
| FDKwriteBits(hBitStream, tnsInfo->numOfFilters[i], |
| (blockType == SHORT_WINDOW ? 1 : 2)); |
| tnsBits += (blockType == SHORT_WINDOW ? 1 : 2); |
| if (tnsInfo->numOfFilters[i]) { |
| FDKwriteBits(hBitStream, (tnsInfo->coefRes[i] == 4 ? 1 : 0), 1); |
| tnsBits += 1; |
| } |
| for (j = 0; j < tnsInfo->numOfFilters[i]; j++) { |
| FDKwriteBits(hBitStream, tnsInfo->length[i][j], |
| (blockType == SHORT_WINDOW ? 4 : 6)); |
| tnsBits += (blockType == SHORT_WINDOW ? 4 : 6); |
| FDK_ASSERT(tnsInfo->order[i][j] <= 12); |
| FDKwriteBits(hBitStream, tnsInfo->order[i][j], |
| (blockType == SHORT_WINDOW ? 3 : 5)); |
| tnsBits += (blockType == SHORT_WINDOW ? 3 : 5); |
| if (tnsInfo->order[i][j]) { |
| FDKwriteBits(hBitStream, tnsInfo->direction[i][j], 1); |
| tnsBits += 1; /*direction*/ |
| if (tnsInfo->coefRes[i] == 4) { |
| coefBits = 3; |
| for (k = 0; k < tnsInfo->order[i][j]; k++) { |
| if (tnsInfo->coef[i][j][k] > 3 || |
| tnsInfo->coef[i][j][k] < -4) { |
| coefBits = 4; |
| break; |
| } |
| } |
| } else { |
| coefBits = 2; |
| for (k = 0; k < tnsInfo->order[i][j]; k++) { |
| if (tnsInfo->coef[i][j][k] > 1 || |
| tnsInfo->coef[i][j][k] < -2) { |
| coefBits = 3; |
| break; |
| } |
| } |
| } |
| FDKwriteBits(hBitStream, -(coefBits - tnsInfo->coefRes[i]), |
| 1); /*coef_compres*/ |
| tnsBits += 1; /*coef_compression */ |
| for (k = 0; k < tnsInfo->order[i][j]; k++) { |
| static const INT rmask[] = {0, 1, 3, 7, 15}; |
| FDKwriteBits(hBitStream, |
| tnsInfo->coef[i][j][k] & rmask[coefBits], |
| coefBits); |
| tnsBits += coefBits; |
| } |
| } |
| } |
| } |
| } |
| } else { |
| if (tnsPresent != 0) { |
| for (i = 0; i < numOfWindows; i++) { |
| tnsBits += (blockType == SHORT_WINDOW ? 1 : 2); |
| if (tnsInfo->numOfFilters[i]) { |
| tnsBits += 1; |
| for (j = 0; j < tnsInfo->numOfFilters[i]; j++) { |
| tnsBits += (blockType == SHORT_WINDOW ? 4 : 6); |
| tnsBits += (blockType == SHORT_WINDOW ? 3 : 5); |
| if (tnsInfo->order[i][j]) { |
| tnsBits += 1; /*direction*/ |
| tnsBits += 1; /*coef_compression */ |
| if (tnsInfo->coefRes[i] == 4) { |
| coefBits = 3; |
| for (k = 0; k < tnsInfo->order[i][j]; k++) { |
| if (tnsInfo->coef[i][j][k] > 3 || |
| tnsInfo->coef[i][j][k] < -4) { |
| coefBits = 4; |
| break; |
| } |
| } |
| } else { |
| coefBits = 2; |
| for (k = 0; k < tnsInfo->order[i][j]; k++) { |
| if (tnsInfo->coef[i][j][k] > 1 || |
| tnsInfo->coef[i][j][k] < -2) { |
| coefBits = 3; |
| break; |
| } |
| } |
| } |
| for (k = 0; k < tnsInfo->order[i][j]; k++) { |
| tnsBits += coefBits; |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } /* (tnsInfo!=NULL) */ |
| |
| return (tnsBits); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_encodeGainControlData |
| description: unsupported |
| returns: none |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodeGainControlData(HANDLE_FDK_BITSTREAM hBitStream) { |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, 0, 1); |
| } |
| return (1); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_encodePulseData |
| description: not supported yet (dummy) |
| returns: none |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_encodePulseData(HANDLE_FDK_BITSTREAM hBitStream) { |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, 0, 1); |
| } |
| return (1); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_writeExtensionPayload |
| description: write extension payload to bitstream |
| returns: number of written bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static INT FDKaacEnc_writeExtensionPayload(HANDLE_FDK_BITSTREAM hBitStream, |
| EXT_PAYLOAD_TYPE extPayloadType, |
| const UCHAR *extPayloadData, |
| INT extPayloadBits) { |
| #define EXT_TYPE_BITS (4) |
| #define DATA_EL_VERSION_BITS (4) |
| #define FILL_NIBBLE_BITS (4) |
| |
| INT extBitsUsed = 0; |
| |
| if (extPayloadBits >= EXT_TYPE_BITS) { |
| UCHAR fillByte = 0x00; /* for EXT_FIL and EXT_FILL_DATA */ |
| |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, extPayloadType, EXT_TYPE_BITS); |
| } |
| extBitsUsed += EXT_TYPE_BITS; |
| |
| switch (extPayloadType) { |
| /* case EXT_SAC_DATA: */ |
| case EXT_LDSAC_DATA: |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, *extPayloadData++, 4); /* nibble */ |
| } |
| extBitsUsed += 4; |
| FDK_FALLTHROUGH; |
| case EXT_DYNAMIC_RANGE: |
| case EXT_SBR_DATA: |
| case EXT_SBR_DATA_CRC: |
| if (hBitStream != NULL) { |
| int i, writeBits = extPayloadBits; |
| for (i = 0; writeBits >= 8; i++) { |
| FDKwriteBits(hBitStream, *extPayloadData++, 8); |
| writeBits -= 8; |
| } |
| if (writeBits > 0) { |
| FDKwriteBits(hBitStream, (*extPayloadData) >> (8 - writeBits), |
| writeBits); |
| } |
| } |
| extBitsUsed += extPayloadBits; |
| break; |
| |
| case EXT_DATA_ELEMENT: { |
| INT dataElementLength = (extPayloadBits + 7) >> 3; |
| INT cnt = dataElementLength; |
| int loopCounter = 1; |
| |
| while (dataElementLength >= 255) { |
| loopCounter++; |
| dataElementLength -= 255; |
| } |
| |
| if (hBitStream != NULL) { |
| int i; |
| FDKwriteBits( |
| hBitStream, 0x00, |
| DATA_EL_VERSION_BITS); /* data_element_version = ANC_DATA */ |
| |
| for (i = 1; i < loopCounter; i++) { |
| FDKwriteBits(hBitStream, 255, 8); |
| } |
| FDKwriteBits(hBitStream, dataElementLength, 8); |
| |
| for (i = 0; i < cnt; i++) { |
| FDKwriteBits(hBitStream, extPayloadData[i], 8); |
| } |
| } |
| extBitsUsed += DATA_EL_VERSION_BITS + (loopCounter * 8) + (cnt * 8); |
| } break; |
| |
| case EXT_FILL_DATA: |
| fillByte = 0xA5; |
| FDK_FALLTHROUGH; |
| case EXT_FIL: |
| default: |
| if (hBitStream != NULL) { |
| int writeBits = extPayloadBits; |
| FDKwriteBits(hBitStream, 0x00, FILL_NIBBLE_BITS); |
| writeBits -= |
| 8; /* acount for the extension type and the fill nibble */ |
| while (writeBits >= 8) { |
| FDKwriteBits(hBitStream, fillByte, 8); |
| writeBits -= 8; |
| } |
| } |
| extBitsUsed += FILL_NIBBLE_BITS + (extPayloadBits & ~0x7) - 8; |
| break; |
| } |
| } |
| |
| return (extBitsUsed); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_writeDataStreamElement |
| description: write data stream elements like ancillary data ... |
| returns: the amount of used bits |
| input: |
| output: |
| |
| ******************************************************************************/ |
| static INT FDKaacEnc_writeDataStreamElement(HANDLE_TRANSPORTENC hTpEnc, |
| INT elementInstanceTag, |
| INT dataPayloadBytes, |
| UCHAR *dataBuffer, |
| UINT alignAnchor) { |
| #define DATA_BYTE_ALIGN_FLAG (0) |
| |
| #define EL_INSTANCE_TAG_BITS (4) |
| #define DATA_BYTE_ALIGN_FLAG_BITS (1) |
| #define DATA_LEN_COUNT_BITS (8) |
| #define DATA_LEN_ESC_COUNT_BITS (8) |
| |
| #define MAX_DATA_ALIGN_BITS (7) |
| #define MAX_DSE_DATA_BYTES (510) |
| |
| INT dseBitsUsed = 0; |
| |
| while (dataPayloadBytes > 0) { |
| int esc_count = -1; |
| int cnt = 0; |
| INT crcReg = -1; |
| |
| dseBitsUsed += EL_ID_BITS + EL_INSTANCE_TAG_BITS + |
| DATA_BYTE_ALIGN_FLAG_BITS + DATA_LEN_COUNT_BITS; |
| |
| if (DATA_BYTE_ALIGN_FLAG) { |
| dseBitsUsed += MAX_DATA_ALIGN_BITS; |
| } |
| |
| cnt = fixMin(MAX_DSE_DATA_BYTES, dataPayloadBytes); |
| if (cnt >= 255) { |
| esc_count = cnt - 255; |
| dseBitsUsed += DATA_LEN_ESC_COUNT_BITS; |
| } |
| |
| dataPayloadBytes -= cnt; |
| dseBitsUsed += cnt * 8; |
| |
| if (hTpEnc != NULL) { |
| HANDLE_FDK_BITSTREAM hBitStream = transportEnc_GetBitstream(hTpEnc); |
| int i; |
| |
| FDKwriteBits(hBitStream, ID_DSE, EL_ID_BITS); |
| |
| crcReg = transportEnc_CrcStartReg(hTpEnc, 0); |
| |
| FDKwriteBits(hBitStream, elementInstanceTag, EL_INSTANCE_TAG_BITS); |
| FDKwriteBits(hBitStream, DATA_BYTE_ALIGN_FLAG, DATA_BYTE_ALIGN_FLAG_BITS); |
| |
| /* write length field(s) */ |
| if (esc_count >= 0) { |
| FDKwriteBits(hBitStream, 255, DATA_LEN_COUNT_BITS); |
| FDKwriteBits(hBitStream, esc_count, DATA_LEN_ESC_COUNT_BITS); |
| } else { |
| FDKwriteBits(hBitStream, cnt, DATA_LEN_COUNT_BITS); |
| } |
| |
| if (DATA_BYTE_ALIGN_FLAG) { |
| INT tmp = (INT)FDKgetValidBits(hBitStream); |
| FDKbyteAlign(hBitStream, alignAnchor); |
| /* count actual bits */ |
| dseBitsUsed += |
| (INT)FDKgetValidBits(hBitStream) - tmp - MAX_DATA_ALIGN_BITS; |
| } |
| |
| /* write payload */ |
| for (i = 0; i < cnt; i++) { |
| FDKwriteBits(hBitStream, dataBuffer[i], 8); |
| } |
| transportEnc_CrcEndReg(hTpEnc, crcReg); |
| } |
| } |
| |
| return (dseBitsUsed); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_writeExtensionData |
| description: write extension payload to bitstream |
| returns: number of written bits |
| input: |
| output: |
| |
| *****************************************************************************/ |
| INT FDKaacEnc_writeExtensionData(HANDLE_TRANSPORTENC hTpEnc, |
| QC_OUT_EXTENSION *pExtension, |
| INT elInstanceTag, /* for DSE only */ |
| UINT alignAnchor, /* for DSE only */ |
| UINT syntaxFlags, AUDIO_OBJECT_TYPE aot, |
| SCHAR epConfig) { |
| #define FILL_EL_COUNT_BITS (4) |
| #define FILL_EL_ESC_COUNT_BITS (8) |
| #define MAX_FILL_DATA_BYTES (269) |
| |
| HANDLE_FDK_BITSTREAM hBitStream = NULL; |
| INT payloadBits = pExtension->nPayloadBits; |
| INT extBitsUsed = 0; |
| |
| if (hTpEnc != NULL) { |
| hBitStream = transportEnc_GetBitstream(hTpEnc); |
| } |
| |
| if (syntaxFlags & (AC_SCALABLE | AC_ER)) { |
| { |
| if ((syntaxFlags & AC_ELD) && ((pExtension->type == EXT_SBR_DATA) || |
| (pExtension->type == EXT_SBR_DATA_CRC))) { |
| if (hBitStream != NULL) { |
| int i, writeBits = payloadBits; |
| UCHAR *extPayloadData = pExtension->pPayload; |
| |
| for (i = 0; writeBits >= 8; i++) { |
| FDKwriteBits(hBitStream, extPayloadData[i], 8); |
| writeBits -= 8; |
| } |
| if (writeBits > 0) { |
| FDKwriteBits(hBitStream, extPayloadData[i] >> (8 - writeBits), |
| writeBits); |
| } |
| } |
| extBitsUsed += payloadBits; |
| } else { |
| /* ER or scalable syntax -> write extension en bloc */ |
| extBitsUsed += FDKaacEnc_writeExtensionPayload( |
| hBitStream, pExtension->type, pExtension->pPayload, payloadBits); |
| } |
| } |
| } else { |
| /* We have normal GA bitstream payload (AOT 2,5,29) so pack |
| the data into a fill elements or DSEs */ |
| |
| if (pExtension->type == EXT_DATA_ELEMENT) { |
| extBitsUsed += FDKaacEnc_writeDataStreamElement( |
| hTpEnc, elInstanceTag, pExtension->nPayloadBits >> 3, |
| pExtension->pPayload, alignAnchor); |
| } else { |
| while (payloadBits >= (EL_ID_BITS + FILL_EL_COUNT_BITS)) { |
| INT cnt, esc_count = -1, alignBits = 7; |
| |
| if ((pExtension->type == EXT_FILL_DATA) || |
| (pExtension->type == EXT_FIL)) { |
| payloadBits -= EL_ID_BITS + FILL_EL_COUNT_BITS; |
| if (payloadBits >= 15 * 8) { |
| payloadBits -= FILL_EL_ESC_COUNT_BITS; |
| esc_count = 0; /* write esc_count even if cnt becomes smaller 15 */ |
| } |
| alignBits = 0; |
| } |
| |
| cnt = fixMin(MAX_FILL_DATA_BYTES, (payloadBits + alignBits) >> 3); |
| |
| if (cnt >= 15) { |
| esc_count = cnt - 15 + 1; |
| } |
| |
| if (hBitStream != NULL) { |
| /* write bitstream */ |
| FDKwriteBits(hBitStream, ID_FIL, EL_ID_BITS); |
| if (esc_count >= 0) { |
| FDKwriteBits(hBitStream, 15, FILL_EL_COUNT_BITS); |
| FDKwriteBits(hBitStream, esc_count, FILL_EL_ESC_COUNT_BITS); |
| } else { |
| FDKwriteBits(hBitStream, cnt, FILL_EL_COUNT_BITS); |
| } |
| } |
| |
| extBitsUsed += EL_ID_BITS + FILL_EL_COUNT_BITS + |
| ((esc_count >= 0) ? FILL_EL_ESC_COUNT_BITS : 0); |
| |
| cnt = fixMin(cnt * 8, payloadBits); /* convert back to bits */ |
| extBitsUsed += FDKaacEnc_writeExtensionPayload( |
| hBitStream, pExtension->type, pExtension->pPayload, cnt); |
| payloadBits -= cnt; |
| } |
| } |
| } |
| |
| return (extBitsUsed); |
| } |
| |
| /***************************************************************************** |
| |
| functionname: FDKaacEnc_ByteAlignment |
| description: |
| returns: |
| input: |
| output: |
| |
| *****************************************************************************/ |
| static void FDKaacEnc_ByteAlignment(HANDLE_FDK_BITSTREAM hBitStream, |
| int alignBits) { |
| FDKwriteBits(hBitStream, 0, alignBits); |
| } |
| |
| AAC_ENCODER_ERROR FDKaacEnc_ChannelElementWrite( |
| HANDLE_TRANSPORTENC hTpEnc, ELEMENT_INFO *pElInfo, |
| QC_OUT_CHANNEL *qcOutChannel[(2)], PSY_OUT_ELEMENT *psyOutElement, |
| PSY_OUT_CHANNEL *psyOutChannel[(2)], UINT syntaxFlags, |
| AUDIO_OBJECT_TYPE aot, SCHAR epConfig, INT *pBitDemand, UCHAR minCnt) { |
| AAC_ENCODER_ERROR error = AAC_ENC_OK; |
| HANDLE_FDK_BITSTREAM hBitStream = NULL; |
| INT bitDemand = 0; |
| const element_list_t *list; |
| int i, ch, decision_bit; |
| INT crcReg1 = -1, crcReg2 = -1; |
| UCHAR numberOfChannels; |
| |
| if (hTpEnc != NULL) { |
| /* Get bitstream handle */ |
| hBitStream = transportEnc_GetBitstream(hTpEnc); |
| } |
| |
| if ((pElInfo->elType == ID_SCE) || (pElInfo->elType == ID_LFE)) { |
| numberOfChannels = 1; |
| } else { |
| numberOfChannels = 2; |
| } |
| |
| /* Get channel element sequence table */ |
| list = getBitstreamElementList(aot, epConfig, numberOfChannels, 0, 0); |
| if (list == NULL) { |
| error = AAC_ENC_UNSUPPORTED_AOT; |
| goto bail; |
| } |
| |
| if (!(syntaxFlags & (AC_SCALABLE | AC_ER))) { |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, pElInfo->elType, EL_ID_BITS); |
| } |
| bitDemand += EL_ID_BITS; |
| } |
| |
| /* Iterate through sequence table */ |
| i = 0; |
| ch = 0; |
| decision_bit = 0; |
| do { |
| /* some tmp values */ |
| SECTION_DATA *pChSectionData = NULL; |
| INT *pChScf = NULL; |
| UINT *pChMaxValueInSfb = NULL; |
| TNS_INFO *pTnsInfo = NULL; |
| INT chGlobalGain = 0; |
| INT chBlockType = 0; |
| INT chMaxSfbPerGrp = 0; |
| INT chSfbPerGrp = 0; |
| INT chSfbCnt = 0; |
| INT chFirstScf = 0; |
| |
| if (minCnt == 0) { |
| if (qcOutChannel != NULL) { |
| pChSectionData = &(qcOutChannel[ch]->sectionData); |
| pChScf = qcOutChannel[ch]->scf; |
| chGlobalGain = qcOutChannel[ch]->globalGain; |
| pChMaxValueInSfb = qcOutChannel[ch]->maxValueInSfb; |
| chBlockType = pChSectionData->blockType; |
| chMaxSfbPerGrp = pChSectionData->maxSfbPerGroup; |
| chSfbPerGrp = pChSectionData->sfbPerGroup; |
| chSfbCnt = pChSectionData->sfbCnt; |
| chFirstScf = pChScf[pChSectionData->firstScf]; |
| } else { |
| /* get values from PSY */ |
| chSfbCnt = psyOutChannel[ch]->sfbCnt; |
| chSfbPerGrp = psyOutChannel[ch]->sfbPerGroup; |
| chMaxSfbPerGrp = psyOutChannel[ch]->maxSfbPerGroup; |
| } |
| pTnsInfo = &psyOutChannel[ch]->tnsInfo; |
| } /* minCnt==0 */ |
| |
| if (qcOutChannel == NULL) { |
| chBlockType = psyOutChannel[ch]->lastWindowSequence; |
| } |
| |
| switch (list->id[i]) { |
| case element_instance_tag: |
| /* Write element instance tag */ |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, pElInfo->instanceTag, 4); |
| } |
| bitDemand += 4; |
| break; |
| |
| case common_window: |
| /* Write common window flag */ |
| decision_bit = psyOutElement->commonWindow; |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, psyOutElement->commonWindow, 1); |
| } |
| bitDemand += 1; |
| break; |
| |
| case ics_info: |
| /* Write individual channel info */ |
| bitDemand += |
| FDKaacEnc_encodeIcsInfo(chBlockType, psyOutChannel[ch]->windowShape, |
| psyOutChannel[ch]->groupingMask, |
| chMaxSfbPerGrp, hBitStream, syntaxFlags); |
| break; |
| |
| case ltp_data_present: |
| /* Write LTP data present flag */ |
| if (hBitStream != NULL) { |
| FDKwriteBits(hBitStream, 0, 1); |
| } |
| bitDemand += 1; |
| break; |
| |
| case ltp_data: |
| /* Predictor data not supported. |
| Nothing to do here. */ |
| break; |
| |
| case ms: |
| /* Write MS info */ |
| bitDemand += FDKaacEnc_encodeMSInfo( |
| chSfbCnt, chSfbPerGrp, chMaxSfbPerGrp, |
| (minCnt == 0) ? psyOutElement->toolsInfo.msDigest : MS_NONE, |
| psyOutElement->toolsInfo.msMask, hBitStream); |
| break; |
| |
| case global_gain: |
| bitDemand += FDKaacEnc_encodeGlobalGain( |
| chGlobalGain, chFirstScf, hBitStream, psyOutChannel[ch]->mdctScale); |
| break; |
| |
| case section_data: { |
| INT siBits = FDKaacEnc_encodeSectionData( |
| pChSectionData, hBitStream, (syntaxFlags & AC_ER_VCB11) ? 1 : 0); |
| if (hBitStream != NULL) { |
| if (siBits != qcOutChannel[ch]->sectionData.sideInfoBits) { |
| error = AAC_ENC_WRITE_SEC_ERROR; |
| } |
| } |
| bitDemand += siBits; |
| } break; |
| |
| case scale_factor_data: { |
| INT sfDataBits = FDKaacEnc_encodeScaleFactorData( |
| pChMaxValueInSfb, pChSectionData, pChScf, hBitStream, |
| psyOutChannel[ch]->noiseNrg, psyOutChannel[ch]->isScale, |
| chGlobalGain); |
| if ((hBitStream != NULL) && |
| (sfDataBits != (qcOutChannel[ch]->sectionData.scalefacBits + |
| qcOutChannel[ch]->sectionData.noiseNrgBits))) { |
| error = AAC_ENC_WRITE_SCAL_ERROR; |
| } |
| bitDemand += sfDataBits; |
| } break; |
| |
| case esc2_rvlc: |
| if (syntaxFlags & AC_ER_RVLC) { |
| /* write RVLC data into bitstream (error sens. cat. 2) */ |
| error = AAC_ENC_UNSUPPORTED_AOT; |
| } |
| break; |
| |
| case pulse: |
| /* Write pulse data */ |
| bitDemand += FDKaacEnc_encodePulseData(hBitStream); |
| break; |
| |
| case tns_data_present: |
| /* Write TNS data present flag */ |
| bitDemand += |
| FDKaacEnc_encodeTnsDataPresent(pTnsInfo, chBlockType, hBitStream); |
| break; |
| case tns_data: |
| /* Write TNS data */ |
| bitDemand += FDKaacEnc_encodeTnsData(pTnsInfo, chBlockType, hBitStream); |
| break; |
| |
| case gain_control_data: |
| /* Nothing to do here */ |
| break; |
| |
| case gain_control_data_present: |
| bitDemand += FDKaacEnc_encodeGainControlData(hBitStream); |
| break; |
| |
| case esc1_hcr: |
| if (syntaxFlags & AC_ER_HCR) { |
| error = AAC_ENC_UNKNOWN; |
| } |
| break; |
| |
| case spectral_data: |
| if (hBitStream != NULL) { |
| INT spectralBits = 0; |
| |
| spectralBits = FDKaacEnc_encodeSpectralData( |
| psyOutChannel[ch]->sfbOffsets, pChSectionData, |
| qcOutChannel[ch]->quantSpec, hBitStream); |
| |
| if (spectralBits != qcOutChannel[ch]->sectionData.huffmanBits) { |
| return AAC_ENC_WRITE_SPEC_ERROR; |
| } |
| bitDemand += spectralBits; |
| } |
| break; |
| |
| /* Non data cases */ |
| case adtscrc_start_reg1: |
| if (hTpEnc != NULL) { |
| crcReg1 = transportEnc_CrcStartReg(hTpEnc, 192); |
| } |
| break; |
| case adtscrc_start_reg2: |
| if (hTpEnc != NULL) { |
| crcReg2 = transportEnc_CrcStartReg(hTpEnc, 128); |
| } |
| break; |
| case adtscrc_end_reg1: |
| case drmcrc_end_reg: |
| if (hTpEnc != NULL) { |
| transportEnc_CrcEndReg(hTpEnc, crcReg1); |
| } |
| break; |
| case adtscrc_end_reg2: |
| if (hTpEnc != NULL) { |
| transportEnc_CrcEndReg(hTpEnc, crcReg2); |
| } |
| break; |
| case drmcrc_start_reg: |
| if (hTpEnc != NULL) { |
| crcReg1 = transportEnc_CrcStartReg(hTpEnc, 0); |
| } |
| break; |
| case next_channel: |
| ch = (ch + 1) % numberOfChannels; |
| break; |
| case link_sequence: |
| list = list->next[decision_bit]; |
| i = -1; |
| break; |
| |
| default: |
| error = AAC_ENC_UNKNOWN; |
| break; |
| } |
| |
| if (error != AAC_ENC_OK) { |
| return error; |
| } |
| |
| i++; |
| |
| } while (list->id[i] != end_of_sequence); |
| |
| bail: |
| if (pBitDemand != NULL) { |
| *pBitDemand = bitDemand; |
| } |
| |
| return error; |
| } |
| |
| //----------------------------------------------------------------------------------------------- |
| |
| AAC_ENCODER_ERROR FDKaacEnc_WriteBitstream(HANDLE_TRANSPORTENC hTpEnc, |
| CHANNEL_MAPPING *channelMapping, |
| QC_OUT *qcOut, PSY_OUT *psyOut, |
| QC_STATE *qcKernel, |
| AUDIO_OBJECT_TYPE aot, |
| UINT syntaxFlags, SCHAR epConfig) { |
| HANDLE_FDK_BITSTREAM hBs = transportEnc_GetBitstream(hTpEnc); |
| AAC_ENCODER_ERROR ErrorStatus = AAC_ENC_OK; |
| int i, n, doByteAlign = 1; |
| INT bitMarkUp; |
| INT frameBits; |
| /* Get first bit of raw data block. |
| In case of ADTS+PCE, AU would start at PCE. |
| This is okay because PCE assures alignment. */ |
| UINT alignAnchor = FDKgetValidBits(hBs); |
| |
| frameBits = bitMarkUp = alignAnchor; |
| |
| /* Channel element loop */ |
| for (i = 0; i < channelMapping->nElements; i++) { |
| ELEMENT_INFO elInfo = channelMapping->elInfo[i]; |
| INT elementUsedBits = 0; |
| |
| switch (elInfo.elType) { |
| case ID_SCE: /* single channel */ |
| case ID_CPE: /* channel pair */ |
| case ID_LFE: /* low freq effects channel */ |
| { |
| if (AAC_ENC_OK != |
| (ErrorStatus = FDKaacEnc_ChannelElementWrite( |
| hTpEnc, &elInfo, qcOut->qcElement[i]->qcOutChannel, |
| psyOut->psyOutElement[i], |
| psyOut->psyOutElement[i]->psyOutChannel, |
| syntaxFlags, /* syntaxFlags (ER tools ...) */ |
| aot, /* aot: AOT_AAC_LC, AOT_SBR, AOT_PS */ |
| epConfig, /* epConfig -1, 0, 1 */ |
| NULL, 0))) { |
| return ErrorStatus; |
| } |
| |
| if (!(syntaxFlags & AC_ER)) { |
| /* Write associated extension payload */ |
| for (n = 0; n < qcOut->qcElement[i]->nExtensions; n++) { |
| FDKaacEnc_writeExtensionData( |
| hTpEnc, &qcOut->qcElement[i]->extension[n], 0, alignAnchor, |
| syntaxFlags, aot, epConfig); |
| } |
| } |
| } break; |
| |
| /* In FDK, DSE signalling explicit done in elDSE. See channel_map.cpp */ |
| default: |
| return AAC_ENC_INVALID_ELEMENTINFO_TYPE; |
| |
| } /* switch */ |
| |
| if (elInfo.elType != ID_DSE) { |
| elementUsedBits -= bitMarkUp; |
| bitMarkUp = FDKgetValidBits(hBs); |
| elementUsedBits += bitMarkUp; |
| frameBits += elementUsedBits; |
| } |
| |
| } /* for (i=0; i<channelMapping.nElements; i++) */ |
| |
| if ((syntaxFlags & AC_ER) && !(syntaxFlags & AC_DRM)) { |
| UCHAR channelElementExtensionWritten[((8))][( |
| 1)]; /* 0: extension not touched, 1: extension already written */ |
| |
| FDKmemclear(channelElementExtensionWritten, |
| sizeof(channelElementExtensionWritten)); |
| |
| if (syntaxFlags & AC_ELD) { |
| for (i = 0; i < channelMapping->nElements; i++) { |
| for (n = 0; n < qcOut->qcElement[i]->nExtensions; n++) { |
| if ((qcOut->qcElement[i]->extension[n].type == EXT_SBR_DATA) || |
| (qcOut->qcElement[i]->extension[n].type == EXT_SBR_DATA_CRC)) { |
| /* Write sbr extension payload */ |
| FDKaacEnc_writeExtensionData( |
| hTpEnc, &qcOut->qcElement[i]->extension[n], 0, alignAnchor, |
| syntaxFlags, aot, epConfig); |
| |
| channelElementExtensionWritten[i][n] = 1; |
| } /* SBR */ |
| } /* n */ |
| } /* i */ |
| } /* AC_ELD */ |
| |
| for (i = 0; i < channelMapping->nElements; i++) { |
| for (n = 0; n < qcOut->qcElement[i]->nExtensions; n++) { |
| if (channelElementExtensionWritten[i][n] == 0) { |
| /* Write all ramaining extension payloads in element */ |
| FDKaacEnc_writeExtensionData(hTpEnc, |
| &qcOut->qcElement[i]->extension[n], 0, |
| alignAnchor, syntaxFlags, aot, epConfig); |
| } |
| } /* n */ |
| } /* i */ |
| } /* if AC_ER */ |
| |
| /* Extend global extension payload table with fill bits */ |
| n = qcOut->nExtensions; |
| |
| /* Add fill data / stuffing bits */ |
| qcOut->extension[n].type = EXT_FILL_DATA; |
| qcOut->extension[n].nPayloadBits = qcOut->totFillBits; |
| qcOut->nExtensions++; |
| |
| /* Write global extension payload and fill data */ |
| for (n = 0; (n < qcOut->nExtensions) && (n < (2 + 2)); n++) { |
| FDKaacEnc_writeExtensionData(hTpEnc, &qcOut->extension[n], 0, alignAnchor, |
| syntaxFlags, aot, epConfig); |
| |
| /* For EXT_FIL or EXT_FILL_DATA we could do an additional sanity check here |
| */ |
| } |
| |
| if (!(syntaxFlags & (AC_SCALABLE | AC_ER))) { |
| FDKwriteBits(hBs, ID_END, EL_ID_BITS); |
| } |
| |
| if (doByteAlign) { |
| /* Assure byte alignment*/ |
| if (((FDKgetValidBits(hBs) - alignAnchor + qcOut->alignBits) & 0x7) != 0) { |
| return AAC_ENC_WRITTEN_BITS_ERROR; |
| } |
| |
| FDKaacEnc_ByteAlignment(hBs, qcOut->alignBits); |
| } |
| |
| frameBits -= bitMarkUp; |
| frameBits += FDKgetValidBits(hBs); |
| |
| transportEnc_EndAccessUnit(hTpEnc, &frameBits); |
| |
| if (frameBits != qcOut->totalBits + qcKernel->globHdrBits) { |
| return AAC_ENC_WRITTEN_BITS_ERROR; |
| } |
| |
| return ErrorStatus; |
| } |
