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Diffstat (limited to 'libMpegTPDec/src/tpdec_latm.cpp')
| -rw-r--r-- | libMpegTPDec/src/tpdec_latm.cpp | 433 |
1 files changed, 0 insertions, 433 deletions
diff --git a/libMpegTPDec/src/tpdec_latm.cpp b/libMpegTPDec/src/tpdec_latm.cpp deleted file mode 100644 index 5710d77..0000000 --- a/libMpegTPDec/src/tpdec_latm.cpp +++ /dev/null @@ -1,433 +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_latm.h" - - -#include "FDK_bitstream.h" - - -#define TPDEC_TRACKINDEX(p,l) (2*(p) + (l)) - -static -UINT CLatmDemux_GetValue(HANDLE_FDK_BITSTREAM bs) -{ - UCHAR bytesForValue = 0, tmp = 0; - int value = 0; - - bytesForValue = (UCHAR) FDKreadBits(bs,2); - - for (UINT i=0; i<=bytesForValue; i++) { - value <<= 8; - tmp = (UCHAR) FDKreadBits(bs,8); - value += tmp; - } - - return value; -} - - -static -TRANSPORTDEC_ERROR CLatmDemux_ReadAudioMuxElement( - HANDLE_FDK_BITSTREAM bs, - CLatmDemux *pLatmDemux, - int m_muxConfigPresent, - CSTpCallBacks *pTpDecCallbacks, - CSAudioSpecificConfig *pAsc, - int *pfConfigFound - ) -{ - TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; - - if (m_muxConfigPresent) { - pLatmDemux->m_useSameStreamMux = FDKreadBits(bs,1); - - if (!pLatmDemux->m_useSameStreamMux) { - if ((ErrorStatus = CLatmDemux_ReadStreamMuxConfig(bs, pLatmDemux, pTpDecCallbacks, pAsc, pfConfigFound))) { - return (ErrorStatus); - } - } - } - - /* If there was no configuration read, its not possible to parse PayloadLengthInfo below. */ - if (! *pfConfigFound) { - return TRANSPORTDEC_SYNC_ERROR; - } - - if (pLatmDemux->m_AudioMuxVersionA == 0) { - /* Do only once per call, because parsing and decoding is done in-line. */ - if ((ErrorStatus = CLatmDemux_ReadPayloadLengthInfo(bs,pLatmDemux))) { - return (ErrorStatus); - } - } else { - /* audioMuxVersionA > 0 is reserved for future extensions */ - ErrorStatus = TRANSPORTDEC_UNSUPPORTED_FORMAT; - } - - return (ErrorStatus); -} - -TRANSPORTDEC_ERROR CLatmDemux_Read( - HANDLE_FDK_BITSTREAM bs, - CLatmDemux *pLatmDemux, - TRANSPORT_TYPE tt, - CSTpCallBacks *pTpDecCallbacks, - CSAudioSpecificConfig *pAsc, - int *pfConfigFound, - const INT ignoreBufferFullness - ) -{ - UINT cntBits; - UINT cmpBufferFullness; - UINT audioMuxLengthBytesLast = 0; - TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; - - cntBits = FDKgetValidBits(bs); - - if ((INT)cntBits < MIN_LATM_HEADERLENGTH) { - return TRANSPORTDEC_NOT_ENOUGH_BITS; - } - - if ((ErrorStatus = CLatmDemux_ReadAudioMuxElement(bs, pLatmDemux, (tt != TT_MP4_LATM_MCP0), pTpDecCallbacks, pAsc, pfConfigFound))) - return (ErrorStatus); - - if (!ignoreBufferFullness) - { - cmpBufferFullness = 24+audioMuxLengthBytesLast*8 - + pLatmDemux->m_linfo[0][0].m_bufferFullness* pAsc[TPDEC_TRACKINDEX(0,0)].m_channelConfiguration*32; - - /* evaluate buffer fullness */ - - if (pLatmDemux->m_linfo[0][0].m_bufferFullness != 0xFF) - { - if (!pLatmDemux->BufferFullnessAchieved) - { - if (cntBits < cmpBufferFullness) - { - /* condition for start of decoding is not fulfilled */ - - /* the current frame will not be decoded */ - return TRANSPORTDEC_NOT_ENOUGH_BITS; - } - else - { - pLatmDemux->BufferFullnessAchieved = 1; - } - } - } - } - - return (ErrorStatus); -} - - -TRANSPORTDEC_ERROR CLatmDemux_ReadStreamMuxConfig( - HANDLE_FDK_BITSTREAM bs, - CLatmDemux *pLatmDemux, - CSTpCallBacks *pTpDecCallbacks, - CSAudioSpecificConfig *pAsc, - int * pfConfigFound - ) -{ - LATM_LAYER_INFO *p_linfo = NULL; - TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; - - pLatmDemux->m_AudioMuxVersion = FDKreadBits(bs,1); - - if (pLatmDemux->m_AudioMuxVersion == 0) { - pLatmDemux->m_AudioMuxVersionA = 0; - } else { - pLatmDemux->m_AudioMuxVersionA = FDKreadBits(bs,1); - } - - if (pLatmDemux->m_AudioMuxVersionA == 0) { - if (pLatmDemux->m_AudioMuxVersion == 1) { - pLatmDemux->m_taraBufferFullness = CLatmDemux_GetValue(bs); - } - pLatmDemux->m_allStreamsSameTimeFraming = FDKreadBits(bs,1); - pLatmDemux->m_noSubFrames = FDKreadBits(bs,6) + 1; - pLatmDemux->m_numProgram = FDKreadBits(bs,4) + 1; - - if (pLatmDemux->m_numProgram > 1) { - return TRANSPORTDEC_UNSUPPORTED_FORMAT; - } - - int idCnt = 0; - for (UINT prog = 0; prog < pLatmDemux->m_numProgram; prog++) { - pLatmDemux->m_numLayer = FDKreadBits(bs,3) + 1; - if (pLatmDemux->m_numLayer > 2) { - return TRANSPORTDEC_UNSUPPORTED_FORMAT; - } - - for (UINT lay = 0; lay < pLatmDemux->m_numLayer; lay++) { - p_linfo = &pLatmDemux->m_linfo[prog][lay]; - - p_linfo->m_streamID = idCnt++; - p_linfo->m_frameLengthInBits = 0; - - if( (prog == 0) && (lay == 0) ) { - pLatmDemux->m_useSameConfig = 0; - } else { - pLatmDemux->m_useSameConfig = FDKreadBits(bs,1); - } - - if (pLatmDemux->m_useSameConfig) { - if (lay > 1) { - FDKmemcpy(&pAsc[TPDEC_TRACKINDEX(prog,lay)], &pAsc[TPDEC_TRACKINDEX(prog,lay-1)], sizeof(CSAudioSpecificConfig)); - } else { - return TRANSPORTDEC_PARSE_ERROR; - } - } else { - if (pLatmDemux->m_AudioMuxVersion == 1) - { - FDK_BITSTREAM tmpBs; - UINT ascStartPos, ascLen=0; - - ascLen = CLatmDemux_GetValue(bs); - ascStartPos = FDKgetValidBits(bs); - tmpBs = *bs; - FDKsyncCache(&tmpBs); - tmpBs.hBitBuf.ValidBits = ascLen; - - /* Read ASC */ - if ((ErrorStatus = AudioSpecificConfig_Parse(&pAsc[TPDEC_TRACKINDEX(prog,lay)], &tmpBs, 1, pTpDecCallbacks))) { - return (ErrorStatus); - } - *pfConfigFound = 1; - - /* The field p_linfo->m_ascLen could be wrong, so check if */ - if ( 0 > (INT)FDKgetValidBits(&tmpBs)) { - return TRANSPORTDEC_PARSE_ERROR; - } - FDKpushFor(bs, ascLen); /* position bitstream after ASC */ - } - else { - /* Read ASC */ - if ((ErrorStatus = AudioSpecificConfig_Parse(&pAsc[TPDEC_TRACKINDEX(prog,lay)], bs, 0, pTpDecCallbacks))) { - return (ErrorStatus); - } - } - { - int cbError; - - cbError = pTpDecCallbacks->cbUpdateConfig(pTpDecCallbacks->cbUpdateConfigData, &pAsc[TPDEC_TRACKINDEX(prog,lay)]); - if (cbError != 0) { - return TRANSPORTDEC_UNKOWN_ERROR; - } - *pfConfigFound = 1; - } - } - - p_linfo->m_frameLengthType = FDKreadBits(bs,3); - switch( p_linfo->m_frameLengthType ) { - case 0: - p_linfo->m_bufferFullness = FDKreadBits(bs,8); - - if (!pLatmDemux->m_allStreamsSameTimeFraming) { - if ((lay > 0) && (pAsc[TPDEC_TRACKINDEX(prog,lay)].m_aot == AOT_AAC_SCAL || pAsc[TPDEC_TRACKINDEX(prog,lay)].m_aot == AOT_ER_AAC_SCAL)) { - return TRANSPORTDEC_UNSUPPORTED_FORMAT; - } - } - break; - case 1: - /* frameLength = FDKreadBits(bs,9); */ - case 3: - case 4: - case 5: - /* CELP */ - case 6: - case 7: - /* HVXC */ - default: - return TRANSPORTDEC_PARSE_ERROR; //_LATM_INVALIDFRAMELENGTHTYPE; - - } /* switch framelengthtype*/ - - } /* layer loop */ - } /* prog loop */ - - pLatmDemux->m_otherDataPresent = FDKreadBits(bs,1); - pLatmDemux->m_otherDataLength = 0; - - if (pLatmDemux->m_otherDataPresent) { - int otherDataLenEsc = 0; - do { - pLatmDemux->m_otherDataLength <<= 8; // *= 256 - otherDataLenEsc = FDKreadBits(bs,1); - pLatmDemux->m_otherDataLength += FDKreadBits(bs,8); - } while (otherDataLenEsc); - } - - pLatmDemux->m_crcCheckPresent = FDKreadBits(bs,1); - pLatmDemux->m_crcCheckSum = 0; - - if (pLatmDemux->m_crcCheckPresent) { - pLatmDemux->m_crcCheckSum = FDKreadBits(bs,8); - } - - } - else { - /* audioMuxVersionA > 0 is reserved for future extensions */ - ErrorStatus = TRANSPORTDEC_UNSUPPORTED_FORMAT; - } - return (ErrorStatus); -} - -TRANSPORTDEC_ERROR CLatmDemux_ReadPayloadLengthInfo(HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux) -{ - TRANSPORTDEC_ERROR ErrorStatus = TRANSPORTDEC_OK; - int totalPayloadBits = 0; - - if( pLatmDemux->m_allStreamsSameTimeFraming == 1 ) { - for (UINT prog=0; prog<pLatmDemux->m_numProgram; prog++ ) { - for (UINT lay=0; lay<pLatmDemux->m_numLayer; lay++ ) { - LATM_LAYER_INFO *p_linfo = &pLatmDemux->m_linfo[prog][lay]; - - switch (p_linfo->m_frameLengthType ) { - case 0: - p_linfo->m_frameLengthInBits = CLatmDemux_ReadAuChunkLengthInfo(bs); - totalPayloadBits += p_linfo->m_frameLengthInBits; - break; - case 3: - case 5: - case 7: - default: - return TRANSPORTDEC_PARSE_ERROR; //AAC_DEC_LATM_INVALIDFRAMELENGTHTYPE; - } - } - } - } - else { - ErrorStatus = TRANSPORTDEC_PARSE_ERROR; //AAC_DEC_LATM_TIMEFRAMING; - } - if (pLatmDemux->m_audioMuxLengthBytes > (UINT)0 && totalPayloadBits > (int)pLatmDemux->m_audioMuxLengthBytes*8) { - return TRANSPORTDEC_PARSE_ERROR; - } - return (ErrorStatus); -} - -int CLatmDemux_ReadAuChunkLengthInfo(HANDLE_FDK_BITSTREAM bs) -{ - UCHAR endFlag; - int len = 0; - - do { - UCHAR tmp = (UCHAR) FDKreadBits(bs,8); - endFlag = (tmp < 255); - - len += tmp; - - } while( endFlag == 0 ); - - len <<= 3; /* convert from bytes to bits */ - - return len; -} - -int CLatmDemux_GetFrameLengthInBits(CLatmDemux *pLatmDemux) -{ - return pLatmDemux->m_linfo[0][0].m_frameLengthInBits; -} - -int CLatmDemux_GetOtherDataPresentFlag(CLatmDemux *pLatmDemux) -{ - return pLatmDemux->m_otherDataPresent ? 1 : 0; -} - -int CLatmDemux_GetOtherDataLength(CLatmDemux *pLatmDemux) -{ - return pLatmDemux->m_otherDataLength; -} - -UINT CLatmDemux_GetNrOfSubFrames(CLatmDemux *pLatmDemux) -{ - return pLatmDemux->m_noSubFrames; -} - |