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Diffstat (limited to 'libMpegTPDec/src/tpdec_asc.cpp')
| -rw-r--r-- | libMpegTPDec/src/tpdec_asc.cpp | 1050 |
1 files changed, 0 insertions, 1050 deletions
diff --git a/libMpegTPDec/src/tpdec_asc.cpp b/libMpegTPDec/src/tpdec_asc.cpp deleted file mode 100644 index 4d7cc02..0000000 --- a/libMpegTPDec/src/tpdec_asc.cpp +++ /dev/null @@ -1,1050 +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 Decoder ************************** - - Author(s): Daniel Homm - Description: - -******************************************************************************/ - -#include "tpdec_lib.h" -#include "tp_data.h" - - -void CProgramConfig_Reset(CProgramConfig *pPce) -{ - pPce->elCounter = 0; -} - -void CProgramConfig_Init(CProgramConfig *pPce) -{ - FDKmemclear(pPce, sizeof(CProgramConfig)); -#ifdef TP_PCE_ENABLE - pPce->SamplingFrequencyIndex = 0xf; -#endif -} - -int CProgramConfig_IsValid ( const CProgramConfig *pPce ) -{ - return ( (pPce->isValid) ? 1 : 0); -} - -#ifdef TP_PCE_ENABLE -void CProgramConfig_Read( - CProgramConfig *pPce, - HANDLE_FDK_BITSTREAM bs, - UINT alignmentAnchor - ) -{ - int i; - - pPce->NumEffectiveChannels = 0; - pPce->NumChannels = 0; - pPce->ElementInstanceTag = (UCHAR) FDKreadBits(bs,4); - pPce->Profile = (UCHAR) FDKreadBits(bs,2); - pPce->SamplingFrequencyIndex = (UCHAR) FDKreadBits(bs,4); - pPce->NumFrontChannelElements = (UCHAR) FDKreadBits(bs,4); - pPce->NumSideChannelElements = (UCHAR) FDKreadBits(bs,4); - pPce->NumBackChannelElements = (UCHAR) FDKreadBits(bs,4); - pPce->NumLfeChannelElements = (UCHAR) FDKreadBits(bs,2); - pPce->NumAssocDataElements = (UCHAR) FDKreadBits(bs,3); - pPce->NumValidCcElements = (UCHAR) FDKreadBits(bs,4); - - if ((pPce->MonoMixdownPresent = (UCHAR) FDKreadBits(bs,1)) != 0) - { - pPce->MonoMixdownElementNumber = (UCHAR) FDKreadBits(bs,4); - } - - if ((pPce->StereoMixdownPresent = (UCHAR) FDKreadBits(bs,1)) != 0) - { - pPce->StereoMixdownElementNumber = (UCHAR) FDKreadBits(bs,4); - } - - if ((pPce->MatrixMixdownIndexPresent = (UCHAR) FDKreadBits(bs,1)) != 0) - { - pPce->MatrixMixdownIndex = (UCHAR) FDKreadBits(bs,2); - pPce->PseudoSurroundEnable = (UCHAR) FDKreadBits(bs,1); - } - - for (i=0; i < pPce->NumFrontChannelElements; i++) - { - pPce->FrontElementIsCpe[i] = (UCHAR) FDKreadBits(bs,1); - pPce->FrontElementTagSelect[i] = (UCHAR) FDKreadBits(bs,4); - pPce->NumChannels += pPce->FrontElementIsCpe[i] ? 2 : 1; - } - - for (i=0; i < pPce->NumSideChannelElements; i++) - { - pPce->SideElementIsCpe[i] = (UCHAR) FDKreadBits(bs,1); - pPce->SideElementTagSelect[i] = (UCHAR) FDKreadBits(bs,4); - pPce->NumChannels += pPce->SideElementIsCpe[i] ? 2 : 1; - } - - for (i=0; i < pPce->NumBackChannelElements; i++) - { - pPce->BackElementIsCpe[i] = (UCHAR) FDKreadBits(bs,1); - pPce->BackElementTagSelect[i] = (UCHAR) FDKreadBits(bs,4); - pPce->NumChannels += pPce->BackElementIsCpe[i] ? 2 : 1; - } - - pPce->NumEffectiveChannels = pPce->NumChannels; - - for (i=0; i < pPce->NumLfeChannelElements; i++) - { - pPce->LfeElementTagSelect[i] = (UCHAR) FDKreadBits(bs,4); - pPce->NumChannels += 1; - } - - for (i=0; i < pPce->NumAssocDataElements; i++) - { - pPce->AssocDataElementTagSelect[i] = (UCHAR) FDKreadBits(bs,4); - } - - for (i=0; i < pPce->NumValidCcElements; i++) - { - pPce->CcElementIsIndSw[i] = (UCHAR) FDKreadBits(bs,1); - pPce->ValidCcElementTagSelect[i] = (UCHAR) FDKreadBits(bs,4); - } - - FDKbyteAlign(bs, alignmentAnchor); - - pPce->CommentFieldBytes = (UCHAR) FDKreadBits(bs,8); - - for (i=0; i < pPce->CommentFieldBytes; i++) - { - UCHAR text; - - text = (UCHAR)FDKreadBits(bs,8); - - if (i < PC_COMMENTLENGTH) - { - pPce->Comment[i] = text; - } - } - - pPce->isValid = 1; -} - -/* - * Compare two program configurations. - * Returns the result of the comparison: - * -1 - completely different - * 0 - completely equal - * 1 - different but same channel configuration - * 2 - different channel configuration but same number of channels - */ -int CProgramConfig_Compare ( const CProgramConfig * const pPce1, - const CProgramConfig * const pPce2 ) -{ - int result = 0; /* Innocent until proven false. */ - - if (FDKmemcmp(pPce1, pPce2, sizeof(CProgramConfig)) != 0) - { /* Configurations are not completely different. - So look into details and analyse the channel configurations: */ - result = -1; - - if (pPce1->NumChannels == pPce2->NumChannels) - { /* Now the logic changes. We first assume to have the same channel configuration - and then prove if this assumption is true. */ - result = 1; - - /* Front channels */ - if (pPce1->NumFrontChannelElements != pPce2->NumFrontChannelElements) { - result = 2; /* different number of front channel elements */ - } else { - int el, numCh1 = 0, numCh2 = 0; - for (el = 0; el < pPce1->NumFrontChannelElements; el += 1) { - numCh1 += pPce1->FrontElementIsCpe[el] ? 2 : 1; - numCh2 += pPce2->FrontElementIsCpe[el] ? 2 : 1; - } - if (numCh1 != numCh2) { - result = 2; /* different number of front channels */ - } - } - /* Side channels */ - if (pPce1->NumSideChannelElements != pPce2->NumSideChannelElements) { - result = 2; /* different number of side channel elements */ - } else { - int el, numCh1 = 0, numCh2 = 0; - for (el = 0; el < pPce1->NumSideChannelElements; el += 1) { - numCh1 += pPce1->SideElementIsCpe[el] ? 2 : 1; - numCh2 += pPce2->SideElementIsCpe[el] ? 2 : 1; - } - if (numCh1 != numCh2) { - result = 2; /* different number of side channels */ - } - } - /* Back channels */ - if (pPce1->NumBackChannelElements != pPce2->NumBackChannelElements) { - result = 2; /* different number of back channel elements */ - } else { - int el, numCh1 = 0, numCh2 = 0; - for (el = 0; el < pPce1->NumBackChannelElements; el += 1) { - numCh1 += pPce1->BackElementIsCpe[el] ? 2 : 1; - numCh2 += pPce2->BackElementIsCpe[el] ? 2 : 1; - } - if (numCh1 != numCh2) { - result = 2; /* different number of back channels */ - } - } - /* LFE channels */ - if (pPce1->NumLfeChannelElements != pPce2->NumLfeChannelElements) { - result = 2; /* different number of lfe channels */ - } - /* LFEs are always SCEs so we don't need to count the channels. */ - } - } - - return result; -} - -void CProgramConfig_GetDefault( CProgramConfig *pPce, - const UINT channelConfig ) -{ - FDK_ASSERT(pPce != NULL); - - /* Init PCE */ - CProgramConfig_Init(pPce); - pPce->Profile = 1; /* Set AAC LC because it is the only supported object type. */ - - switch (channelConfig) { - /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ - case 6: /* 3/0/2.1ch */ - pPce->NumLfeChannelElements += 1; - pPce->NumChannels += 1; - case 5: /* 3/0/2.0ch */ - case 4: /* 3/0/1.0ch */ - pPce->NumBackChannelElements += 1; - pPce->BackElementIsCpe[0] = (channelConfig>4) ? 1 : 0; - pPce->NumChannels += (channelConfig>4) ? 2 : 1; - pPce->NumEffectiveChannels += (channelConfig>4) ? 2 : 1; - case 3: /* 3/0/0.0ch */ - pPce->NumFrontChannelElements += 1; - pPce->FrontElementIsCpe[1] = 1; - pPce->NumChannels += 2; - pPce->NumEffectiveChannels += 2; - case 1: /* 1/0/0.0ch */ - pPce->NumFrontChannelElements += 1; - pPce->FrontElementIsCpe[0] = 0; - pPce->NumChannels += 1; - pPce->NumEffectiveChannels += 1; - pPce->isValid = 1; - break; - /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ - case 2: /* 2/0/0.ch */ - pPce->NumFrontChannelElements = 1; - pPce->FrontElementIsCpe[0] = 1; - pPce->NumChannels += 2; - pPce->NumEffectiveChannels += 2; - pPce->isValid = 1; - break; - /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ - default: - pPce->isValid = 0; /* To be explicit! */ - break; - } - - if (pPce->isValid) { - /* Create valid element instance tags */ - int el, elTagSce = 0, elTagCpe = 0; - - for (el = 0; el < pPce->NumFrontChannelElements; el += 1) { - pPce->FrontElementTagSelect[el] = (pPce->FrontElementIsCpe) ? elTagCpe++ : elTagSce++; - } - for (el = 0; el < pPce->NumSideChannelElements; el += 1) { - pPce->SideElementTagSelect[el] = (pPce->SideElementIsCpe) ? elTagCpe++ : elTagSce++; - } - for (el = 0; el < pPce->NumBackChannelElements; el += 1) { - pPce->BackElementTagSelect[el] = (pPce->BackElementIsCpe) ? elTagCpe++ : elTagSce++; - } - elTagSce = 0; - for (el = 0; el < pPce->NumLfeChannelElements; el += 1) { - pPce->LfeElementTagSelect[el] = elTagSce++; - } - } -} -#endif /* TP_PCE_ENABLE */ - -/** - * \brief get implicit audio channel type for given channelConfig and MPEG ordered channel index - * \param channelConfig MPEG channelConfiguration from 1 upto 7 - * \param index MPEG channel order index - * \return audio channel type. - */ -void getImplicitAudioChannelTypeAndIndex( - AUDIO_CHANNEL_TYPE *chType, - UCHAR *chIndex, - UINT channelConfig, - UINT index - ) -{ - if (index < 3) { - *chType = ACT_FRONT; - *chIndex = index; - } else { - switch (channelConfig) { - case MODE_1_2_1: - case MODE_1_2_2: - case MODE_1_2_2_1: - switch (index) { - case 3: - case 4: - *chType = ACT_BACK; - *chIndex = index - 3; - break; - case 5: - *chType = ACT_LFE; - *chIndex = 0; - break; - } - break; - case MODE_1_2_2_2_1: - switch (index) { - case 3: - case 4: - *chType = ACT_SIDE; - *chIndex = index - 3; - break; - case 5: - case 6: - *chType = ACT_BACK; - *chIndex = index - 5; - break; - case 7: - *chType = ACT_LFE; - *chIndex = 0; - break; - } - break; - default: - *chType = ACT_NONE; - break; - } - } -} - -int CProgramConfig_LookupElement( - CProgramConfig *pPce, - UINT channelConfig, - const UINT tag, - const UINT channelIdx, - UCHAR chMapping[], - AUDIO_CHANNEL_TYPE chType[], - UCHAR chIndex[], - UCHAR *elMapping, - MP4_ELEMENT_ID elList[], - MP4_ELEMENT_ID elType - ) -{ - if (channelConfig > 0) - { - /* Constant channel mapping must have - been set during initialization. */ - if ( elType == ID_SCE - || elType == ID_CPE - || elType == ID_LFE ) - { - *elMapping = pPce->elCounter; - if (elList[pPce->elCounter] != elType) { - /* Not in the list */ - if ( (channelConfig == 2) && (elType == ID_SCE) ) - { /* This scenario occurs with HE-AAC v2 streams of buggy encoders. - Due to other decoder implementations decoding of these kind of streams is desired. */ - channelConfig = 1; - } else { - return 0; - } - } - /* Assume all front channels */ - getImplicitAudioChannelTypeAndIndex(&chType[channelIdx], &chIndex[channelIdx], channelConfig, channelIdx); - if (elType == ID_CPE) { - chType[channelIdx+1] = chType[channelIdx]; - chIndex[channelIdx+1] = chIndex[channelIdx]+1; - } - pPce->elCounter++; - } - /* Accept all non-channel elements, too. */ - return 1; - } - else - { -#ifdef TP_PCE_ENABLE - if (!pPce->isValid) -#endif /* TP_PCE_ENABLE */ - { - /* Implicit channel mapping. */ - if ( elType == ID_SCE - || elType == ID_CPE - || elType == ID_LFE ) - { - /* Store all channel element IDs */ - elList[pPce->elCounter] = elType; - *elMapping = pPce->elCounter++; - } - } -#ifdef TP_PCE_ENABLE - else { - /* Accept the additional channel(s), only if the tag is in the lists */ - int isCpe = 0, i; - int cc = 0, fc = 0, sc = 0, bc = 0, lc = 0, ec = 0; /* Channel and element counters */ - - switch (elType) - { - case ID_CPE: - isCpe = 1; - case ID_SCE: - /* search in front channels */ - for (i = 0; i < pPce->NumFrontChannelElements; i++) { - if (isCpe == pPce->FrontElementIsCpe[i] && pPce->FrontElementTagSelect[i] == tag) { - chMapping[cc] = channelIdx; - chType[cc] = ACT_FRONT; - chIndex[cc] = fc; - if (isCpe) { - chMapping[cc+1] = channelIdx+1; - chType[cc+1] = ACT_FRONT; - chIndex[cc+1] = fc+1; - } - *elMapping = ec; - return 1; - } - ec++; - if (pPce->FrontElementIsCpe[i]) { - cc+=2; fc+=2; - } else { - cc++; fc++; - } - } - /* search in side channels */ - for (i = 0; i < pPce->NumSideChannelElements; i++) { - if (isCpe == pPce->SideElementIsCpe[i] && pPce->SideElementTagSelect[i] == tag) { - chMapping[cc] = channelIdx; - chType[cc] = ACT_SIDE; - chIndex[cc] = sc; - if (isCpe) { - chMapping[cc+1] = channelIdx+1; - chType[cc+1] = ACT_SIDE; - chIndex[cc+1] = sc+1; - } - *elMapping = ec; - return 1; - } - ec++; - if (pPce->SideElementIsCpe[i]) { - cc+=2; sc+=2; - } else { - cc++; sc++; - } - } - /* search in back channels */ - for (i = 0; i < pPce->NumBackChannelElements; i++) { - if (isCpe == pPce->BackElementIsCpe[i] && pPce->BackElementTagSelect[i] == tag) { - chMapping[cc] = channelIdx; - chType[cc] = ACT_BACK; - chIndex[cc] = bc; - if (isCpe) { - chMapping[cc+1] = channelIdx+1; - chType[cc+1] = ACT_BACK; - chIndex[cc+1] = bc+1; - } - *elMapping = ec; - return 1; - } - ec++; - if (pPce->BackElementIsCpe[i]) { - cc+=2; bc+=2; - } else { - cc++; bc++; - } - } - break; - - case ID_LFE: - /* Initialize channel counter and element counter */ - cc = pPce->NumEffectiveChannels; - ec = pPce->NumFrontChannelElements+ pPce->NumSideChannelElements + pPce->NumBackChannelElements; - /* search in lfe channels */ - for (i = 0; i < pPce->NumLfeChannelElements; i++) { - if ( pPce->LfeElementTagSelect[i] == tag ) { - chMapping[cc] = channelIdx; - *elMapping = ec; - chType[cc] = ACT_LFE; - chIndex[cc] = lc; - return 1; - } - ec++; - cc++; - lc++; - } - break; - - /* Non audio elements */ - case ID_CCE: - /* search in cce channels */ - for (i = 0; i < pPce->NumValidCcElements; i++) { - if (pPce->ValidCcElementTagSelect[i] == tag) { - return 1; - } - } - break; - case ID_DSE: - /* search associated data elements */ - for (i = 0; i < pPce->NumAssocDataElements; i++) { - if (pPce->AssocDataElementTagSelect[i] == tag) { - return 1; - } - } - break; - default: - return 0; - } - return 0; /* not found in any list */ - } -#endif /* TP_PCE_ENABLE */ - } - - return 1; -} - -#ifdef TP_PCE_ENABLE -int CProgramConfig_GetElementTable( - const CProgramConfig *pPce, - MP4_ELEMENT_ID elList[], - const INT elListSize - ) -{ - int i, el = 0; - - if ( elListSize - < pPce->NumFrontChannelElements + pPce->NumSideChannelElements + pPce->NumBackChannelElements + pPce->NumLfeChannelElements - ) - { - return 0; - } - - for (i=0; i < pPce->NumFrontChannelElements; i++) - { - elList[el++] = (pPce->FrontElementIsCpe[i]) ? ID_CPE : ID_SCE; - } - - for (i=0; i < pPce->NumSideChannelElements; i++) - { - elList[el++] = (pPce->SideElementIsCpe[i]) ? ID_CPE : ID_SCE; - } - - for (i=0; i < pPce->NumBackChannelElements; i++) - { - elList[el++] = (pPce->BackElementIsCpe[i]) ? ID_CPE : ID_SCE; - } - - for (i=0; i < pPce->NumLfeChannelElements; i++) - { - elList[el++] = ID_LFE; - } - - - return el; -} -#endif - -static AUDIO_OBJECT_TYPE getAOT(HANDLE_FDK_BITSTREAM bs) -{ - int tmp = 0; - - tmp = FDKreadBits(bs,5); - if (tmp == AOT_ESCAPE) { - int tmp2 = FDKreadBits(bs,6); - tmp = 32 + tmp2; - } - - return (AUDIO_OBJECT_TYPE)tmp; -} - -static INT getSampleRate(HANDLE_FDK_BITSTREAM bs, UCHAR *index, int nBits) -{ - INT sampleRate; - int idx; - - idx = FDKreadBits(bs, nBits); - if( idx == (1<<nBits)-1 ) { - if(FDKgetValidBits(bs) < 24) { - return 0; - } - sampleRate = FDKreadBits(bs,24); - } else { - sampleRate = SamplingRateTable[idx]; - } - - *index = idx; - - return sampleRate; -} - -#ifdef TP_GA_ENABLE -static -TRANSPORTDEC_ERROR GaSpecificConfig_Parse( CSGaSpecificConfig *self, - CSAudioSpecificConfig *asc, - HANDLE_FDK_BITSTREAM bs, - UINT ascStartAnchor ) -{ - TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; - - self->m_frameLengthFlag = FDKreadBits(bs,1); - - self->m_dependsOnCoreCoder = FDKreadBits(bs,1); - - if( self->m_dependsOnCoreCoder ) - self->m_coreCoderDelay = FDKreadBits(bs,14); - - self->m_extensionFlag = FDKreadBits(bs,1); - - if( asc->m_channelConfiguration == 0 ) { - CProgramConfig_Read(&asc->m_progrConfigElement, bs, ascStartAnchor); - } - - if ((asc->m_aot == AOT_AAC_SCAL) || (asc->m_aot == AOT_ER_AAC_SCAL)) { - self->m_layer = FDKreadBits(bs,3); - } - - if (self->m_extensionFlag) { - if (asc->m_aot == AOT_ER_BSAC) { - self->m_numOfSubFrame = FDKreadBits(bs,5); - self->m_layerLength = FDKreadBits(bs,11); - } - - if ((asc->m_aot == AOT_ER_AAC_LC) || (asc->m_aot == AOT_ER_AAC_LTP) || - (asc->m_aot == AOT_ER_AAC_SCAL) || (asc->m_aot == AOT_ER_AAC_LD)) - { - asc->m_vcb11Flag = FDKreadBits(bs,1); /* aacSectionDataResilienceFlag */ - asc->m_rvlcFlag = FDKreadBits(bs,1); /* aacScalefactorDataResilienceFlag */ - asc->m_hcrFlag = FDKreadBits(bs,1); /* aacSpectralDataResilienceFlag */ - } - - self->m_extensionFlag3 = FDKreadBits(bs,1); - - } - return (ErrorStatus); -} -#endif /* TP_GA_ENABLE */ - - - - - -#ifdef TP_ELD_ENABLE - -static INT ld_sbr_header( const CSAudioSpecificConfig *asc, - HANDLE_FDK_BITSTREAM hBs, - CSTpCallBacks *cb ) -{ - const int channelConfiguration = asc->m_channelConfiguration; - int i = 0; - INT error = 0; - - if (channelConfiguration == 2) { - error = cb->cbSbr(cb->cbSbrData, hBs, asc->m_samplingFrequency, asc->m_extensionSamplingFrequency, asc->m_samplesPerFrame, AOT_ER_AAC_ELD, ID_CPE, i++); - } else { - error = cb->cbSbr(cb->cbSbrData, hBs, asc->m_samplingFrequency, asc->m_extensionSamplingFrequency, asc->m_samplesPerFrame, AOT_ER_AAC_ELD, ID_SCE, i++); - } - - switch ( channelConfiguration ) { - case 7: - error |= cb->cbSbr(cb->cbSbrData, hBs, asc->m_samplingFrequency, asc->m_extensionSamplingFrequency, asc->m_samplesPerFrame, AOT_ER_AAC_ELD, ID_CPE, i++); - case 6: - case 5: - error |= cb->cbSbr(cb->cbSbrData, hBs, asc->m_samplingFrequency, asc->m_extensionSamplingFrequency, asc->m_samplesPerFrame, AOT_ER_AAC_ELD, ID_CPE, i++); - case 3: - error |= cb->cbSbr(cb->cbSbrData, hBs, asc->m_samplingFrequency, asc->m_extensionSamplingFrequency, asc->m_samplesPerFrame, AOT_ER_AAC_ELD, ID_CPE, i++); - break; - - case 4: - error |= cb->cbSbr(cb->cbSbrData, hBs, asc->m_samplingFrequency, asc->m_extensionSamplingFrequency, asc->m_samplesPerFrame, AOT_ER_AAC_ELD, ID_CPE, i++); - error |= cb->cbSbr(cb->cbSbrData, hBs, asc->m_samplingFrequency, asc->m_extensionSamplingFrequency, asc->m_samplesPerFrame, AOT_ER_AAC_ELD, ID_SCE, i++); - break; - } - - return error; -} - -static -TRANSPORTDEC_ERROR EldSpecificConfig_Parse( - CSAudioSpecificConfig *asc, - HANDLE_FDK_BITSTREAM hBs, - CSTpCallBacks *cb - ) -{ - TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; - CSEldSpecificConfig *esc = &asc->m_sc.m_eldSpecificConfig; - ASC_ELD_EXT_TYPE eldExtType; - int eldExtLen, len, cnt; - - FDKmemclear(esc, sizeof(CSEldSpecificConfig)); - - esc->m_frameLengthFlag = FDKreadBits(hBs, 1 ); - if (esc->m_frameLengthFlag) { - asc->m_samplesPerFrame = 480; - } else { - asc->m_samplesPerFrame = 512; - } - - asc->m_vcb11Flag = FDKreadBits(hBs, 1 ); - asc->m_rvlcFlag = FDKreadBits(hBs, 1 ); - asc->m_hcrFlag = FDKreadBits(hBs, 1 ); - - esc->m_sbrPresentFlag = FDKreadBits(hBs, 1 ); - - if (esc->m_sbrPresentFlag == 1) { - esc->m_sbrSamplingRate = FDKreadBits(hBs, 1 ); /* 0: single rate, 1: dual rate */ - esc->m_sbrCrcFlag = FDKreadBits(hBs, 1 ); - - asc->m_extensionSamplingFrequency = asc->m_samplingFrequency << esc->m_sbrSamplingRate; - - if (cb->cbSbr != NULL){ - if ( 0 != ld_sbr_header(asc, hBs, cb) ) { - return TRANSPORTDEC_PARSE_ERROR; - } - } - } - esc->m_useLdQmfTimeAlign = 0; - - /* new ELD syntax */ - /* parse ExtTypeConfigData */ - while ((eldExtType = (ASC_ELD_EXT_TYPE)FDKreadBits(hBs, 4 )) != ELDEXT_TERM) { - eldExtLen = len = FDKreadBits(hBs, 4 ); - if ( len == 0xf ) { - len = FDKreadBits(hBs, 8 ); - eldExtLen += len; - - if ( len == 0xff ) { - len = FDKreadBits(hBs, 16 ); - eldExtLen += len; - } - } - - switch (eldExtType) { - case ELDEXT_LDSAC: - esc->m_useLdQmfTimeAlign = 1; - if (cb->cbSsc != NULL) { - ErrorStatus = (TRANSPORTDEC_ERROR)cb->cbSsc( - cb->cbSscData, - hBs, - asc->m_aot, - asc->m_samplingFrequency, - 1, /* muxMode */ - len - ); - } else { - ErrorStatus = TRANSPORTDEC_UNSUPPORTED_FORMAT; - } - if (ErrorStatus != TRANSPORTDEC_OK) { - goto bail; - } - break; - default: - for(cnt=0; cnt<len; cnt++) { - FDKreadBits(hBs, 8 ); - } - break; - /* add future eld extension configs here */ - } - } -bail: - return (ErrorStatus); -} -#endif /* TP_ELD_ENABLE */ - - -static -TRANSPORTDEC_ERROR AudioSpecificConfig_ExtensionParse(CSAudioSpecificConfig *self, HANDLE_FDK_BITSTREAM bs, CSTpCallBacks *cb) -{ - TP_ASC_EXTENSION_ID lastAscExt, ascExtId = ASCEXT_UNKOWN; - INT bitsAvailable = (INT)FDKgetValidBits(bs); - - while (bitsAvailable >= 11) - { - lastAscExt = ascExtId; - ascExtId = (TP_ASC_EXTENSION_ID)FDKreadBits(bs, 11); - bitsAvailable -= 11; - - switch (ascExtId) { - case ASCEXT_SBR: /* 0x2b7 */ - if ( (self->m_extensionAudioObjectType != AOT_SBR) && (bitsAvailable >= 5) ) { - self->m_extensionAudioObjectType = getAOT(bs); - - if ( (self->m_extensionAudioObjectType == AOT_SBR) - || (self->m_extensionAudioObjectType == AOT_ER_BSAC) ) - { /* Get SBR extension configuration */ - self->m_sbrPresentFlag = FDKreadBits(bs, 1); - bitsAvailable -= 1; - - if ( self->m_sbrPresentFlag == 1 ) { - self->m_extensionSamplingFrequency = getSampleRate(bs, &self->m_extensionSamplingFrequencyIndex, 4); - - if ((INT)self->m_extensionSamplingFrequency <= 0) { - return TRANSPORTDEC_PARSE_ERROR; - } - } - if ( self->m_extensionAudioObjectType == AOT_ER_BSAC ) { - self->m_extensionChannelConfiguration = FDKreadBits(bs, 4); - bitsAvailable -= 4; - } - } - /* Update counter because of variable length fields (AOT and sampling rate) */ - bitsAvailable = (INT)FDKgetValidBits(bs); - } - break; - case ASCEXT_PS: /* 0x548 */ - if ( (lastAscExt == ASCEXT_SBR) - && (self->m_extensionAudioObjectType == AOT_SBR) - && (bitsAvailable > 0) ) - { /* Get PS extension configuration */ - self->m_psPresentFlag = FDKreadBits(bs, 1); - bitsAvailable -= 1; - } - break; - default: - /* Just ignore anything. */ - return TRANSPORTDEC_OK; - } - } - - return TRANSPORTDEC_OK; -} - -/* - * API Functions - */ - -void AudioSpecificConfig_Init(CSAudioSpecificConfig *asc) -{ - FDKmemclear(asc, sizeof(CSAudioSpecificConfig)); - - /* Init all values that should not be zero. */ - asc->m_aot = AOT_NONE; - asc->m_samplingFrequencyIndex = 0xf; - asc->m_epConfig = -1; - asc->m_extensionAudioObjectType = AOT_NULL_OBJECT; -#ifdef TP_PCE_ENABLE - CProgramConfig_Init(&asc->m_progrConfigElement); -#endif -} - -TRANSPORTDEC_ERROR AudioSpecificConfig_Parse( - CSAudioSpecificConfig *self, - HANDLE_FDK_BITSTREAM bs, - int fExplicitBackwardCompatible, - CSTpCallBacks *cb - ) -{ - TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; - UINT ascStartAnchor = FDKgetValidBits(bs); - int frameLengthFlag = -1; - - AudioSpecificConfig_Init(self); - - self->m_aot = getAOT(bs); - self->m_samplingFrequency = getSampleRate(bs, &self->m_samplingFrequencyIndex, 4); - if (self->m_samplingFrequency <= 0) { - return TRANSPORTDEC_PARSE_ERROR; - } - - self->m_channelConfiguration = FDKreadBits(bs,4); - - /* SBR extension ( explicit non-backwards compatible mode ) */ - self->m_sbrPresentFlag = 0; - self->m_psPresentFlag = 0; - - if ( self->m_aot == AOT_SBR || self->m_aot == AOT_PS ) { - self->m_extensionAudioObjectType = AOT_SBR; - - self->m_sbrPresentFlag = 1; - if ( self->m_aot == AOT_PS ) { - self->m_psPresentFlag = 1; - } - - self->m_extensionSamplingFrequency = getSampleRate(bs, &self->m_extensionSamplingFrequencyIndex, 4); - self->m_aot = getAOT(bs); - - } else { - self->m_extensionAudioObjectType = AOT_NULL_OBJECT; - } - - /* Parse whatever specific configs */ - switch (self->m_aot) - { -#ifdef TP_GA_ENABLE - case AOT_AAC_LC: - case AOT_ER_AAC_LC: - case AOT_ER_AAC_LD: - case AOT_ER_AAC_SCAL: - case AOT_ER_BSAC: - if ((ErrorStatus = GaSpecificConfig_Parse(&self->m_sc.m_gaSpecificConfig, self, bs, ascStartAnchor)) != TRANSPORTDEC_OK ) { - return (ErrorStatus); - } - frameLengthFlag = self->m_sc.m_gaSpecificConfig.m_frameLengthFlag; - break; -#endif /* TP_GA_ENABLE */ - case AOT_MPEGS: - if (cb->cbSsc != NULL) { - cb->cbSsc( - cb->cbSscData, - bs, - self->m_aot, - self->m_samplingFrequency, - 1, - 0 /* don't know the length */ - ); - } else { - return TRANSPORTDEC_UNSUPPORTED_FORMAT; - } - break; -#ifdef TP_ELD_ENABLE - case AOT_ER_AAC_ELD: - if ((ErrorStatus = EldSpecificConfig_Parse(self, bs, cb)) != TRANSPORTDEC_OK ) { - return (ErrorStatus); - } - frameLengthFlag = self->m_sc.m_eldSpecificConfig.m_frameLengthFlag; - self->m_sbrPresentFlag = self->m_sc.m_eldSpecificConfig.m_sbrPresentFlag; - self->m_extensionSamplingFrequency = (self->m_sc.m_eldSpecificConfig.m_sbrSamplingRate+1) * self->m_samplingFrequency; - break; -#endif /* TP_ELD_ENABLE */ - - default: - return TRANSPORTDEC_UNSUPPORTED_FORMAT; - break; - } - - /* Frame length */ - switch (self->m_aot) - { -#if defined(TP_GA_ENABLE) || defined(TP_USAC_ENABLE) - case AOT_AAC_LC: - case AOT_ER_AAC_LC: - case AOT_ER_AAC_SCAL: - case AOT_ER_BSAC: - /*case AOT_USAC:*/ - if (!frameLengthFlag) - self->m_samplesPerFrame = 1024; - else - self->m_samplesPerFrame = 960; - break; -#endif /* TP_GA_ENABLE */ -#if defined(TP_GA_ENABLE) - case AOT_ER_AAC_LD: - if (!frameLengthFlag) - self->m_samplesPerFrame = 512; - else - self->m_samplesPerFrame = 480; - break; -#endif /* defined(TP_GA_ENABLE) */ - default: - break; - } - - switch (self->m_aot) - { - case AOT_ER_AAC_LC: - case AOT_ER_AAC_LD: - case AOT_ER_AAC_ELD: - case AOT_ER_AAC_SCAL: - case AOT_ER_CELP: - case AOT_ER_HVXC: - case AOT_ER_BSAC: - self->m_epConfig = FDKreadBits(bs,2); - - if (self->m_epConfig > 1) { - return TRANSPORTDEC_UNSUPPORTED_FORMAT; // EPCONFIG; - } - break; - default: - break; - } - - if (fExplicitBackwardCompatible) { - ErrorStatus = AudioSpecificConfig_ExtensionParse(self, bs, cb); - } - - return (ErrorStatus); -} - - |