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Diffstat (limited to 'libMpegTPEnc/src/tpenc_asc.cpp')
| -rw-r--r-- | libMpegTPEnc/src/tpenc_asc.cpp | 576 |
1 files changed, 0 insertions, 576 deletions
diff --git a/libMpegTPEnc/src/tpenc_asc.cpp b/libMpegTPEnc/src/tpenc_asc.cpp deleted file mode 100644 index bc4302e..0000000 --- a/libMpegTPEnc/src/tpenc_asc.cpp +++ /dev/null @@ -1,576 +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 ------------------------------------------------------------------------------------------------------------ */ - -/***************************** MPEG-4 AAC Encoder ************************** - - Author(s): - Description: - -******************************************************************************/ - -#include "tp_data.h" - -#include "tpenc_lib.h" -#include "tpenc_asc.h" -#include "FDK_bitstream.h" -#include "genericStds.h" - -#define PCE_MAX_ELEMENTS 8 - -/** - * Describe a PCE based on placed channel elements and element type sequence. - */ -typedef struct { - - UCHAR num_front_channel_elements; /*!< Number of front channel elements. */ - UCHAR num_side_channel_elements; /*!< Number of side channel elements. */ - UCHAR num_back_channel_elements; /*!< Number of back channel elements. */ - UCHAR num_lfe_channel_elements; /*!< Number of lfe channel elements. */ - MP4_ELEMENT_ID el_list[PCE_MAX_ELEMENTS];/*!< List contains sequence describing the elements - in present channel mode. (MPEG order) */ -} PCE_CONFIGURATION; - - -/** - * Map an incoming channel mode to a existing PCE configuration entry. - */ -typedef struct { - - CHANNEL_MODE channel_mode; /*!< Present channel mode. */ - PCE_CONFIGURATION pce_configuration; /*!< Program config element description. */ - -} CHANNEL_CONFIGURATION; - - -/** - * \brief Table contains all supported channel modes and according PCE configuration description. - * - * The number of channel element parameter describes the kind of consecutively elements. - * E.g. MODE_1_2_2_2_1 means: - * - First 3 elements (SCE,CPE,CPE) are front channel elements. - * - Next element (CPE) is a back channel element. - * - Last element (LFE) is a lfe channel element. - */ -static const CHANNEL_CONFIGURATION pceConfigTab[] = -{ - { MODE_1, { 1, 0, 0, 0, { ID_SCE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_2, { 1, 0, 0, 0, { ID_CPE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_1_2, { 2, 0, 0, 0, { ID_SCE, ID_CPE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_1_2_1, { 2, 0, 1, 0, { ID_SCE, ID_CPE, ID_SCE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_1_2_2, { 2, 0, 1, 0, { ID_SCE, ID_CPE, ID_CPE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_1_2_2_1, { 2, 0, 1, 1, { ID_SCE, ID_CPE, ID_CPE, ID_LFE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_1_2_2_2_1, { 3, 0, 1, 1, { ID_SCE, ID_CPE, ID_CPE, ID_CPE, ID_LFE, ID_NONE, ID_NONE, ID_NONE } } }, - - - { MODE_1_1, { 2, 0, 0, 0, { ID_SCE, ID_SCE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_1_1_1_1, { 2, 2, 0, 0, { ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_1_1_1_1_1_1, { 2, 2, 2, 0, { ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_NONE, ID_NONE } } }, - { MODE_1_1_1_1_1_1_1_1, { 3, 2, 3, 0, { ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_SCE, ID_SCE } } }, - - { MODE_2_2, { 1, 0, 1, 0, { ID_CPE, ID_CPE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_2_2_2, { 1, 1, 1, 0, { ID_CPE, ID_CPE, ID_CPE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_2_2_2_2, { 4, 0, 0, 0, { ID_CPE, ID_CPE, ID_CPE, ID_CPE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - - { MODE_2_1, { 1, 0, 1, 0, { ID_CPE, ID_SCE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE, ID_NONE } } }, - - { MODE_7_1_REAR_SURROUND, { 2, 0, 2, 1, { ID_SCE, ID_CPE, ID_CPE, ID_CPE, ID_LFE, ID_NONE, ID_NONE, ID_NONE } } }, - { MODE_7_1_FRONT_CENTER, { 3, 0, 1, 1, { ID_SCE, ID_CPE, ID_CPE, ID_CPE, ID_LFE, ID_NONE, ID_NONE, ID_NONE } } }, - -}; - - -/** - * \brief Get program config element description for existing channel mode. - * - * \param channel_mode Current channel mode. - * - * \return - * - Pointer to PCE_CONFIGURATION entry, on success. - * - NULL, on failure. - */ -static const PCE_CONFIGURATION* getPceEntry( - const CHANNEL_MODE channel_mode - ) -{ - UINT i; - const PCE_CONFIGURATION *pce_config = NULL; - - for (i=0; i < (sizeof(pceConfigTab)/sizeof(CHANNEL_CONFIGURATION)); i++) { - if (pceConfigTab[i].channel_mode == channel_mode) { - pce_config = &pceConfigTab[i].pce_configuration; - } - } - - return pce_config; -} - -int getChannelConfig( CHANNEL_MODE channel_mode ) -{ - INT chan_config = 0; - - switch(channel_mode) { - case MODE_1: chan_config = 1; break; - case MODE_2: chan_config = 2; break; - case MODE_1_2: chan_config = 3; break; - case MODE_1_2_1: chan_config = 4; break; - case MODE_1_2_2: chan_config = 5; break; - case MODE_1_2_2_1: chan_config = 6; break; - case MODE_1_2_2_2_1: chan_config = 7; break; - - default: chan_config = 0; - } - - return chan_config; -} - -CHANNEL_MODE transportEnc_GetChannelMode( int noChannels ) -{ - CHANNEL_MODE chMode; - - if (noChannels <= 8 && noChannels > 0) - chMode = (CHANNEL_MODE)((noChannels == 8) ? 7 : noChannels); /* see : iso/mpeg4 v1 audio subpart1*/ - else - chMode = MODE_UNKNOWN; - - return chMode; -} - -#ifdef TP_PCE_ENABLE -int transportEnc_writePCE(HANDLE_FDK_BITSTREAM hBs, - CHANNEL_MODE channelMode, - INT sampleRate, - int instanceTagPCE, - int profile, - int matrixMixdownA, - int pseudoSurroundEnable, - UINT alignAnchor) -{ - int sampleRateIndex, i; - const PCE_CONFIGURATION* config = NULL; - const MP4_ELEMENT_ID* pEl_list = NULL; - UCHAR cpeCnt=0, sceCnt=0, lfeCnt=0; - - sampleRateIndex = getSamplingRateIndex(sampleRate); - if (sampleRateIndex == 15) { - return -1; - } - - if ((config=getPceEntry(channelMode))==NULL) { - return -1; - } - - /* Pointer to first element in element list. */ - pEl_list = &config->el_list[0]; - - FDKwriteBits(hBs, instanceTagPCE, 4); /* Element instance tag */ - FDKwriteBits(hBs, profile, 2); /* Object type */ - FDKwriteBits(hBs, sampleRateIndex, 4); /* Sample rate index*/ - - FDKwriteBits(hBs, config->num_front_channel_elements, 4); /* Front channel Elements */ - FDKwriteBits(hBs, config->num_side_channel_elements , 4); /* No Side Channel Elements */ - FDKwriteBits(hBs, config->num_back_channel_elements , 4); /* No Back channel Elements */ - FDKwriteBits(hBs, config->num_lfe_channel_elements , 2); /* No Lfe channel elements */ - - FDKwriteBits(hBs, 0, 3); /* No assoc data elements */ - FDKwriteBits(hBs, 0, 4); /* No valid cc elements */ - FDKwriteBits(hBs, 0, 1); /* Mono mixdown present */ - FDKwriteBits(hBs, 0, 1); /* Stereo mixdown present */ - - if ( matrixMixdownA!=0 && ((channelMode==MODE_1_2_2)||(channelMode==MODE_1_2_2_1)) ) { - FDKwriteBits(hBs, 1, 1); /* Matrix mixdown present */ - FDKwriteBits(hBs, (matrixMixdownA-1)&0x3, 2); /* matrix_mixdown_idx */ - FDKwriteBits(hBs, (pseudoSurroundEnable)?1:0, 1); /* pseudo_surround_enable */ - } - else { - FDKwriteBits(hBs, 0, 1); /* Matrix mixdown not present */ - } - - for(i=0; i<config->num_front_channel_elements; i++) { - UCHAR isCpe = (*pEl_list++==ID_CPE) ? 1 : 0; - UCHAR tag = (isCpe) ? cpeCnt++ : sceCnt++; - FDKwriteBits(hBs, isCpe, 1); /* Front channel Elements is CPE? */ - FDKwriteBits(hBs, tag, 4); /* Front channel Instance Tag.*/ - } - for(i=0; i<config->num_side_channel_elements; i++) { - UCHAR isCpe = (*pEl_list++==ID_CPE) ? 1 : 0; - UCHAR tag = (isCpe) ? cpeCnt++ : sceCnt++; - FDKwriteBits(hBs, isCpe, 1); /* Front channel Elements is CPE? */ - FDKwriteBits(hBs, tag, 4); /* Front channel Instance Tag.*/ - } - for(i=0; i<config->num_back_channel_elements; i++) { - UCHAR isCpe = (*pEl_list++==ID_CPE) ? 1 : 0; - UCHAR tag = (isCpe) ? cpeCnt++ : sceCnt++; - FDKwriteBits(hBs, isCpe, 1); /* Front channel Elements is CPE? */ - FDKwriteBits(hBs, tag, 4); /* Front channel Instance Tag.*/ - } - for(i=0; i<config->num_lfe_channel_elements; i++) { - FDKwriteBits(hBs, lfeCnt++, 4); /* LFE channel Instance Tag. */ - } - - /* - num_valid_cc_elements always 0. - - num_assoc_data_elements always 0. */ - - /* Byte alignment: relative to alignAnchor - ADTS: align with respect to the first bit of the raw_data_block() - ADIF: align with respect to the first bit of the header - LATM: align with respect to the first bit of the ASC */ - FDKbyteAlign(hBs, alignAnchor); /* Alignment */ - - FDKwriteBits(hBs, 0 ,8); /* Do no write any comment. */ - - /* - comment_field_bytes always 0. */ - - return 0; -} - -int transportEnc_GetPCEBits(CHANNEL_MODE channelMode, - int matrixMixdownA, - int bits) -{ - const PCE_CONFIGURATION* config = NULL; - - if ((config=getPceEntry(channelMode))==NULL) { - return -1; /* unsupported channelmapping */ - } - - bits += 4 + 2 + 4; /* Element instance tag + Object type + Sample rate index */ - bits += 4 + 4 + 4 + 2; /* No (front + side + back + lfe channel) elements */ - bits += 3 + 4; /* No (assoc data + valid cc) elements */ - bits += 1 + 1 + 1 ; /* Mono + Stereo + Matrix mixdown present */ - - if ( matrixMixdownA!=0 && ((channelMode==MODE_1_2_2)||(channelMode==MODE_1_2_2_1)) ) { - bits +=3; /* matrix_mixdown_idx + pseudo_surround_enable */ - } - - bits += (1+4) * (INT)config->num_front_channel_elements; - bits += (1+4) * (INT)config->num_side_channel_elements; - bits += (1+4) * (INT)config->num_back_channel_elements; - bits += (4) * (INT)config->num_lfe_channel_elements; - - /* - num_valid_cc_elements always 0. - - num_assoc_data_elements always 0. */ - - if ((bits%8) != 0) { - bits += (8 - (bits%8)); /* Alignment */ - } - - bits += 8; /* Comment field bytes */ - - /* - comment_field_bytes alwys 0. */ - - return bits; -} -#endif /* TP_PCE_ENABLE */ - -static void writeAot(HANDLE_FDK_BITSTREAM hBitstreamBuffer, AUDIO_OBJECT_TYPE aot) -{ - int tmp = (int) aot; - - if (tmp > 31) { - FDKwriteBits( hBitstreamBuffer, AOT_ESCAPE, 5 ); - FDKwriteBits( hBitstreamBuffer, tmp-32, 6 ); /* AudioObjectType */ - } else { - FDKwriteBits( hBitstreamBuffer, tmp, 5 ); - } -} - -static void writeSampleRate(HANDLE_FDK_BITSTREAM hBitstreamBuffer, int sampleRate) -{ - int sampleRateIndex = getSamplingRateIndex(sampleRate); - - FDKwriteBits( hBitstreamBuffer, sampleRateIndex, 4 ); - if( sampleRateIndex == 15 ) { - FDKwriteBits( hBitstreamBuffer, sampleRate, 24 ); - } -} - -#ifdef TP_GA_ENABLE -static -int transportEnc_writeGASpecificConfig( - HANDLE_FDK_BITSTREAM asc, - CODER_CONFIG *config, - int extFlg, - UINT alignAnchor - ) -{ - int aot = config->aot; - int samplesPerFrame = config->samplesPerFrame; - - /* start of GASpecificConfig according to ISO/IEC 14496-3 Subpart 4, 4.4.1 */ - FDKwriteBits( asc, ((samplesPerFrame==960 || samplesPerFrame==480)?1:0), 1); /* frameLengthFlag: 1 for a 960/480 (I)MDCT, 0 for a 1024/512 (I)MDCT*/ - FDKwriteBits( asc, 0, 1); /* dependsOnCoreCoder: Sampling Rate Coder Specific, see in ISO/IEC 14496-3 Subpart 4, 4.4.1 */ - FDKwriteBits( asc, extFlg, 1 ); /* Extension Flag: Shall be 1 for aot = 17,19,20,21,22,23 */ - - /* Write PCE if channel config is not 1-7 */ - if (getChannelConfig(config->channelMode) == 0) { - transportEnc_writePCE(asc, config->channelMode, config->samplingRate, 0, 1, config->matrixMixdownA, (config->flags&CC_PSEUDO_SURROUND)?1:0, alignAnchor); - } - if (extFlg) { - if (aot == AOT_ER_BSAC) { - FDKwriteBits( asc, config->BSACnumOfSubFrame, 5 ); /* numOfSubFrame */ - FDKwriteBits( asc, config->BSAClayerLength, 11 ); /* layer_length */ - } - if ((aot == AOT_ER_AAC_LC) || (aot == AOT_ER_AAC_LTP) || - (aot == AOT_ER_AAC_SCAL) || (aot == AOT_ER_AAC_LD)) - { - FDKwriteBits( asc, (config->flags & CC_VCB11) ? 1 : 0, 1 ); /* aacSectionDataResillienceFlag */ - FDKwriteBits( asc, (config->flags & CC_RVLC) ? 1 : 0, 1 ); /* aacScaleFactorDataResillienceFlag */ - FDKwriteBits( asc, (config->flags & CC_HCR) ? 1 : 0, 1 ); /* aacSpectralDataResillienceFlag */ - } - FDKwriteBits( asc, 0, 1 ); /* extensionFlag3: reserved. Shall be '0' */ - } - return 0; -} -#endif /* TP_GA_ENABLE */ - -#ifdef TP_ELD_ENABLE - -static -int transportEnc_writeELDSpecificConfig( - HANDLE_FDK_BITSTREAM hBs, - CODER_CONFIG *config, - int epConfig, - CSTpCallBacks *cb - ) -{ - /* ELD specific config */ - if (config->channelMode == MODE_1_1) { - return -1; - } - FDKwriteBits(hBs, (config->samplesPerFrame == 480) ? 1 : 0, 1); - - FDKwriteBits(hBs, (config->flags & CC_VCB11 ) ? 1:0, 1); - FDKwriteBits(hBs, (config->flags & CC_RVLC ) ? 1:0, 1); - FDKwriteBits(hBs, (config->flags & CC_HCR ) ? 1:0, 1); - - FDKwriteBits(hBs, (config->flags & CC_SBR) ? 1:0, 1); /* SBR header flag */ - if ( (config->flags & CC_SBR) ) { - FDKwriteBits(hBs, (config->samplingRate == config->extSamplingRate) ? 0:1, 1); /* Samplerate Flag */ - FDKwriteBits(hBs, (config->flags & CC_SBRCRC) ? 1:0, 1); /* SBR CRC flag*/ - - if (cb->cbSbr != NULL) { - const PCE_CONFIGURATION *pPce; - int e; - - pPce = getPceEntry(config->channelMode); - - for (e=0; e<PCE_MAX_ELEMENTS && pPce->el_list[e] != ID_NONE; e++ ) { - if ( (pPce->el_list[e] == ID_SCE) || (pPce->el_list[e] == ID_CPE) ) { - cb->cbSbr(cb->cbSbrData, hBs, 0, 0, 0, config->aot, pPce->el_list[e], e); - } - } - } - } - - FDKwriteBits(hBs, 0, 4); /* ELDEXT_TERM */ - - return 0; -} -#endif /* TP_ELD_ENABLE */ - - -int transportEnc_writeASC ( - HANDLE_FDK_BITSTREAM asc, - CODER_CONFIG *config, - CSTpCallBacks *cb - ) -{ - UINT extFlag = 0; - int err; - int epConfig = 0; - - /* Required for the PCE. */ - UINT alignAnchor = FDKgetValidBits(asc); - - /* Extension Flag: Shall be 1 for aot = 17,19,20,21,22,23,39 */ - switch (config->aot) { - case AOT_ER_AAC_LC: - case AOT_ER_AAC_LTP: - case AOT_ER_AAC_SCAL: - case AOT_ER_TWIN_VQ: - case AOT_ER_BSAC: - case AOT_ER_AAC_LD: - case AOT_ER_AAC_ELD: - case AOT_USAC: - extFlag = 1; - break; - default: - break; - } - - if (config->sbrSignaling==SIG_EXPLICIT_HIERARCHICAL && config->sbrPresent) - writeAot(asc, config->extAOT); - else - writeAot(asc, config->aot); - - { - writeSampleRate(asc, config->samplingRate); - } - - /* Try to guess a reasonable channel mode if not given */ - if (config->channelMode == MODE_INVALID) { - config->channelMode = transportEnc_GetChannelMode(config->noChannels); - if (config->channelMode == MODE_INVALID) - return -1; - } - - FDKwriteBits( asc, getChannelConfig(config->channelMode), 4 ); - - if (config->sbrSignaling==SIG_EXPLICIT_HIERARCHICAL && config->sbrPresent) { - writeSampleRate(asc, config->extSamplingRate); - writeAot(asc, config->aot); - } - - switch (config->aot) { -#ifdef TP_GA_ENABLE - case AOT_AAC_MAIN: - case AOT_AAC_LC: - case AOT_AAC_SSR: - case AOT_AAC_LTP: - case AOT_AAC_SCAL: - case AOT_TWIN_VQ: - case AOT_ER_AAC_LC: - case AOT_ER_AAC_LTP: - case AOT_ER_AAC_SCAL: - case AOT_ER_TWIN_VQ: - case AOT_ER_BSAC: - case AOT_ER_AAC_LD: - err = transportEnc_writeGASpecificConfig(asc, config, extFlag, alignAnchor); - if (err) - return err; - break; -#endif /* TP_GA_ENABLE */ -#ifdef TP_ELD_ENABLE - case AOT_ER_AAC_ELD: - err = transportEnc_writeELDSpecificConfig(asc, config, epConfig, cb); - if (err) - return err; - break; -#endif /* TP_ELD_ENABLE */ - default: - return -1; - } - - switch (config->aot) { - case AOT_ER_AAC_LC: - case AOT_ER_AAC_LTP: - case AOT_ER_AAC_SCAL: - case AOT_ER_TWIN_VQ: - case AOT_ER_BSAC: - case AOT_ER_AAC_LD: - case AOT_ER_CELP: - case AOT_ER_HVXC: - case AOT_ER_HILN: - case AOT_ER_PARA: - case AOT_ER_AAC_ELD: - FDKwriteBits( asc, 0, 2 ); /* epconfig 0 */ - break; - default: - break; - } - - /* backward compatible explicit signaling of extension AOT */ - if (config->sbrSignaling==SIG_EXPLICIT_BW_COMPATIBLE) - { - TP_ASC_EXTENSION_ID ascExtId = ASCEXT_UNKOWN; - - if (config->sbrPresent) { - ascExtId=ASCEXT_SBR; - FDKwriteBits( asc, ascExtId, 11 ); - writeAot(asc, config->extAOT); - FDKwriteBits( asc, 1, 1 ); /* sbrPresentFlag=1 */ - writeSampleRate(asc, config->extSamplingRate); - if (config->psPresent) { - ascExtId=ASCEXT_PS; - FDKwriteBits( asc, ascExtId, 11 ); - FDKwriteBits( asc, 1, 1 ); /* psPresentFlag=1 */ - } - } - - } - - /* Make sure all bits are sync'ed */ - FDKsyncCache( asc ); - - return 0; -} |