summaryrefslogtreecommitdiffstats
path: root/libMpegTPEnc/src/tpenc_latm.cpp
diff options
context:
space:
mode:
authorMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2016-09-10 20:15:44 +0200
commit14c7b800eaa23e9da7c92c7c4df397d0c191f097 (patch)
treed840b6ec41ff74d1184ca1dcd7731d08f1e9ebbb /libMpegTPEnc/src/tpenc_latm.cpp
parent78a801e4d716c6f2403cc56cf6c5b6f138f24b2f (diff)
downloadODR-AudioEnc-14c7b800eaa23e9da7c92c7c4df397d0c191f097.tar.gz
ODR-AudioEnc-14c7b800eaa23e9da7c92c7c4df397d0c191f097.tar.bz2
ODR-AudioEnc-14c7b800eaa23e9da7c92c7c4df397d0c191f097.zip
Remove FDK-AAC
Diffstat (limited to 'libMpegTPEnc/src/tpenc_latm.cpp')
-rw-r--r--libMpegTPEnc/src/tpenc_latm.cpp882
1 files changed, 0 insertions, 882 deletions
diff --git a/libMpegTPEnc/src/tpenc_latm.cpp b/libMpegTPEnc/src/tpenc_latm.cpp
deleted file mode 100644
index 58e51ef..0000000
--- a/libMpegTPEnc/src/tpenc_latm.cpp
+++ /dev/null
@@ -1,882 +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 "tpenc_latm.h"
-
-
-#include "genericStds.h"
-
-static const short celpFrameLengthTable[64] = {
- 154, 170, 186, 147, 156, 165, 114, 120,
- 186, 126, 132, 138, 142, 146, 154, 166,
- 174, 182, 190, 198, 206, 210, 214, 110,
- 114, 118, 120, 122, 218, 230, 242, 254,
- 266, 278, 286, 294, 318, 342, 358, 374,
- 390, 406, 422, 136, 142, 148, 154, 160,
- 166, 170, 174, 186, 198, 206, 214, 222,
- 230, 238, 216, 160, 280, 338, 0, 0
-};
-
-/*******
- write value to transport stream
- first two bits define the size of the value itself
- then the value itself, with a size of 0-3 bytes
-*******/
-static
-UINT transportEnc_LatmWriteValue(HANDLE_FDK_BITSTREAM hBs, int value)
-{
- UCHAR valueBytes = 4;
- unsigned int bitsWritten = 0;
- int i;
-
- if ( value < (1<<8) ) {
- valueBytes = 1;
- } else if ( value < (1<<16) ) {
- valueBytes = 2;
- } else if ( value < (1<<24) ) {
- valueBytes = 3;
- } else {
- valueBytes = 4;
- }
-
- FDKwriteBits(hBs, valueBytes-1, 2 ); /* size of value in Bytes */
- for (i=0; i<valueBytes; i++) {
- /* write most significant Byte first */
- FDKwriteBits(hBs, (UCHAR)(value>>((valueBytes-1-i)<<3)), 8);
- }
-
- bitsWritten = (valueBytes<<3)+2;
-
- return bitsWritten;
-}
-
-static
-UINT transportEnc_LatmCountFixBitDemandHeader ( HANDLE_LATM_STREAM hAss )
-{
- int bitDemand = 0;
- int insertSetupData = 0 ;
-
- /* only if start of new latm frame */
- if (hAss->subFrameCnt==0)
- {
- /* AudioSyncStream */
-
- if (hAss->tt == TT_MP4_LOAS) {
- bitDemand += 11 ; /* syncword */
- bitDemand += 13 ; /* audioMuxLengthBytes */
- }
-
- /* AudioMuxElement*/
-
- /* AudioMuxElement::Stream Mux Config */
- if (hAss->muxConfigPeriod > 0) {
- insertSetupData = (hAss->latmFrameCounter == 0);
- } else {
- insertSetupData = 0;
- }
-
- if (hAss->tt != TT_MP4_LATM_MCP0) {
- /* AudioMuxElement::useSameStreamMux Flag */
- bitDemand+=1;
-
- if( insertSetupData ) {
- bitDemand += hAss->streamMuxConfigBits;
- }
- }
-
- /* AudioMuxElement::otherDataBits */
- bitDemand += 8*hAss->otherDataLenBytes;
-
- /* AudioMuxElement::ByteAlign */
- if ( bitDemand % 8 ) {
- hAss->fillBits = 8 - (bitDemand % 8);
- bitDemand += hAss->fillBits ;
- } else {
- hAss->fillBits = 0;
- }
- }
-
- return bitDemand ;
-}
-
-static
-UINT transportEnc_LatmCountVarBitDemandHeader ( HANDLE_LATM_STREAM hAss , unsigned int streamDataLength )
-{
- int bitDemand = 0;
- int prog, layer;
-
- /* Payload Length Info*/
- if( hAss->allStreamsSameTimeFraming ) {
- for( prog=0; prog<hAss->noProgram; prog++ ) {
- for( layer=0; layer<LATM_MAX_LAYERS; layer++ ) {
- LATM_LAYER_INFO *p_linfo = &(hAss->m_linfo[prog][layer]);
-
- if( p_linfo->streamID >= 0 ) {
- switch( p_linfo->frameLengthType ) {
- case 0:
- if ( streamDataLength > 0 ) {
- streamDataLength -= bitDemand ;
- while( streamDataLength >= (255<<3) ) {
- bitDemand+=8;
- streamDataLength -= (255<<3);
- }
- bitDemand += 8;
- }
- break;
-
- case 1:
- case 4:
- case 6:
- bitDemand += 2;
- break;
-
- default:
- return 0;
- }
- }
- }
- }
- } else {
- /* there are many possibilities to use this mechanism. */
- switch( hAss->varMode ) {
- case LATMVAR_SIMPLE_SEQUENCE: {
- /* Use the sequence generated by the encoder */
- //int streamCntPosition = transportEnc_SetWritePointer( hAss->hAssemble, 0 );
- //int streamCntPosition = FDKgetValidBits( hAss->hAssemble );
- bitDemand+=4;
-
- hAss->varStreamCnt = 0;
- for( prog=0; prog<hAss->noProgram; prog++ ) {
- for( layer=0; layer<LATM_MAX_LAYERS; layer++ ) {
- LATM_LAYER_INFO *p_linfo = &(hAss->m_linfo[prog][layer]);
-
- if( p_linfo->streamID >= 0 ) {
-
- bitDemand+=4; /* streamID */
- switch( p_linfo->frameLengthType ) {
- case 0:
- streamDataLength -= bitDemand ;
- while( streamDataLength >= (255<<3) ) {
- bitDemand+=8;
- streamDataLength -= (255<<3);
- }
-
- bitDemand += 8;
- break;
- /*bitDemand += 1; endFlag
- break;*/
-
- case 1:
- case 4:
- case 6:
-
- break;
-
- default:
- return 0;
- }
- hAss->varStreamCnt++;
- }
- }
- }
- bitDemand+=4;
- //transportEnc_UpdateBitstreamField( hAss->hAssemble, streamCntPosition, hAss->varStreamCnt-1, 4 );
- //UINT pos = streamCntPosition-FDKgetValidBits(hAss->hAssemble);
- //FDKpushBack( hAss->hAssemble, pos);
- //FDKwriteBits( hAss->hAssemble, hAss->varStreamCnt-1, 4);
- //FDKpushFor( hAss->hAssemble, pos-4);
- }
- break;
-
- default:
- return 0;
- }
- }
-
- return bitDemand ;
-}
-
-TRANSPORTENC_ERROR
-CreateStreamMuxConfig(
- HANDLE_LATM_STREAM hAss,
- HANDLE_FDK_BITSTREAM hBs,
- int bufferFullness,
- CSTpCallBacks *cb
- )
-{
- INT streamIDcnt, tmp;
- int layer, prog;
-
- USHORT coreFrameOffset=0;
-
- hAss->audioMuxVersionA = 0; /* for future extensions */
- hAss->streamMuxConfigBits = 0;
-
- FDKwriteBits( hBs, hAss->audioMuxVersion, 1 ); /* audioMuxVersion */
- hAss->streamMuxConfigBits += 1;
-
- if ( hAss->audioMuxVersion == 1 ) {
- FDKwriteBits( hBs, hAss->audioMuxVersionA, 1 ); /* audioMuxVersionA */
- hAss->streamMuxConfigBits+=1;
- }
-
- if ( hAss->audioMuxVersionA == 0 )
- {
- if ( hAss->audioMuxVersion == 1 ) {
- hAss->streamMuxConfigBits+= transportEnc_LatmWriteValue( hBs, hAss->taraBufferFullness );/* taraBufferFullness */
- }
- FDKwriteBits( hBs, hAss->allStreamsSameTimeFraming ? 1:0, 1 ); /* allStreamsSameTimeFraming */
- FDKwriteBits( hBs, hAss->noSubframes-1, 6 ); /* Number of Subframes */
- FDKwriteBits( hBs, hAss->noProgram-1, 4 ); /* Number of Programs */
-
- hAss->streamMuxConfigBits+=11;
-
- streamIDcnt = 0;
- for( prog=0; prog<hAss->noProgram; prog++ ) {
- int transLayer = 0;
-
- FDKwriteBits( hBs, hAss->noLayer[prog]-1, 3 );
- hAss->streamMuxConfigBits+=3;
-
- for( layer=0; layer<LATM_MAX_LAYERS; layer++ ) {
- LATM_LAYER_INFO *p_linfo = &(hAss->m_linfo[prog][layer]);
- CODER_CONFIG *p_lci = hAss->config[prog][layer];
-
- p_linfo->streamID = -1;
-
- if( hAss->config[prog][layer] != NULL ) {
- int useSameConfig = 0;
-
- if( transLayer > 0 ) {
- FDKwriteBits( hBs, useSameConfig ? 1 : 0, 1 );
- hAss->streamMuxConfigBits+=1;
- }
- if( (useSameConfig == 0) || (transLayer==0) ) {
- UINT bits;
-
- if ( hAss->audioMuxVersion == 1 ) {
- FDKpushFor(hBs, 2); /* align to ASC, even if we do not know the length of the "ascLen" field yet */
- }
-
- bits = FDKgetValidBits( hBs );
-
- transportEnc_writeASC(
- hBs,
- hAss->config[prog][layer],
- cb
- );
-
- bits = FDKgetValidBits( hBs ) - bits;
-
- if ( hAss->audioMuxVersion == 1 ) {
- FDKpushBack(hBs, bits+2);
- hAss->streamMuxConfigBits += transportEnc_LatmWriteValue( hBs, bits );
- transportEnc_writeASC(
- hBs,
- hAss->config[prog][layer],
- cb
- );
- }
-
- hAss->streamMuxConfigBits += bits; /* add asc length to smc summary */
- }
- transLayer++;
-
- if( !hAss->allStreamsSameTimeFraming ) {
- if( streamIDcnt >= LATM_MAX_STREAM_ID )
- return TRANSPORTENC_INVALID_CONFIG;
- }
- p_linfo->streamID = streamIDcnt++;
-
- switch( p_lci->aot ) {
- case AOT_AAC_MAIN :
- case AOT_AAC_LC :
- case AOT_AAC_SSR :
- case AOT_AAC_LTP :
- case AOT_AAC_SCAL :
- case AOT_ER_AAC_LD :
- case AOT_ER_AAC_ELD :
- case AOT_USAC:
- case AOT_RSVD50:
- p_linfo->frameLengthType = 0;
-
- FDKwriteBits( hBs, p_linfo->frameLengthType, 3 ); /* frameLengthType */
- FDKwriteBits( hBs, bufferFullness, 8 ); /* bufferFullness */
- hAss->streamMuxConfigBits+=11;
-
- if ( !hAss->allStreamsSameTimeFraming ) {
- CODER_CONFIG *p_lci_prev = hAss->config[prog][layer-1];
- if ( ((p_lci->aot == AOT_AAC_SCAL) || (p_lci->aot == AOT_ER_AAC_SCAL)) &&
- ((p_lci_prev->aot == AOT_CELP) || (p_lci_prev->aot == AOT_ER_CELP)) ) {
- FDKwriteBits( hBs, coreFrameOffset, 6 ); /* coreFrameOffset */
- hAss->streamMuxConfigBits+=6;
- }
- }
- break;
-
- case AOT_TWIN_VQ:
- p_linfo->frameLengthType = 1;
- tmp = ( (p_lci->bitsFrame+7) >> 3 ) - 20; /* transmission frame length in bytes */
- if( (tmp < 0) ) {
- return TRANSPORTENC_INVALID_TRANSMISSION_FRAME_LENGTH;
- }
- FDKwriteBits( hBs, p_linfo->frameLengthType, 3 ); /* frameLengthType */
- FDKwriteBits( hBs, tmp, 9 );
- hAss->streamMuxConfigBits+=12;
-
- p_linfo->frameLengthBits = (tmp+20) << 3;
- break;
-
- case AOT_CELP:
- p_linfo->frameLengthType = 4;
- FDKwriteBits( hBs, p_linfo->frameLengthType, 3 ); /* frameLengthType */
- hAss->streamMuxConfigBits+=3;
- {
- int i;
- for( i=0; i<62; i++ ) {
- if( celpFrameLengthTable[i] == p_lci->bitsFrame )
- break;
- }
- if( i>=62 ) {
- return TRANSPORTENC_INVALID_CELP_FRAME_LENGTH;
- }
-
- FDKwriteBits( hBs, i, 6 ); /* CELPframeLengthTabelIndex */
- hAss->streamMuxConfigBits+=6;
- }
- p_linfo->frameLengthBits = p_lci->bitsFrame;
- break;
-
- case AOT_HVXC:
- p_linfo->frameLengthType = 6;
- FDKwriteBits( hBs, p_linfo->frameLengthType, 3 ); /* frameLengthType */
- hAss->streamMuxConfigBits+=3;
- {
- int i;
-
- if( p_lci->bitsFrame == 40 ) {
- i = 0;
- } else if( p_lci->bitsFrame == 80 ) {
- i = 1;
- } else {
- return TRANSPORTENC_INVALID_FRAME_BITS;
- }
- FDKwriteBits( hBs, i, 1 ); /* HVXCframeLengthTableIndex */
- hAss->streamMuxConfigBits+=1;
- }
- p_linfo->frameLengthBits = p_lci->bitsFrame;
- break;
-
- case AOT_NULL_OBJECT:
- default:
- return TRANSPORTENC_INVALID_AOT;
- }
- }
- }
- }
-
- FDKwriteBits( hBs, (hAss->otherDataLenBytes>0) ? 1:0, 1 ); /* otherDataPresent */
- hAss->streamMuxConfigBits+=1;
-
- if( hAss->otherDataLenBytes > 0 ) {
-
- INT otherDataLenTmp = hAss->otherDataLenBytes;
- INT escCnt = 0;
- INT otherDataLenEsc = 1;
-
- while(otherDataLenTmp) {
- otherDataLenTmp >>= 8;
- escCnt ++;
- }
-
- do {
- otherDataLenTmp = (hAss->otherDataLenBytes>>(escCnt*8)) & 0xFF;
- escCnt--;
- otherDataLenEsc = escCnt>0;
-
- FDKwriteBits( hBs, otherDataLenEsc, 1 );
- FDKwriteBits( hBs, otherDataLenTmp, 8 );
- hAss->streamMuxConfigBits+=9;
- } while(otherDataLenEsc);
- }
-
- {
- USHORT crcCheckPresent=0;
- USHORT crcCheckSum=0;
-
- FDKwriteBits( hBs, crcCheckPresent, 1 ); /* crcCheckPresent */
- hAss->streamMuxConfigBits+=1;
- if ( crcCheckPresent ){
- FDKwriteBits( hBs, crcCheckSum, 8 ); /* crcCheckSum */
- hAss->streamMuxConfigBits+=8;
- }
- }
-
- } else { /* if ( audioMuxVersionA == 0 ) */
-
- /* for future extensions */
-
- }
-
- return TRANSPORTENC_OK;
-}
-
-
-static TRANSPORTENC_ERROR
-WriteAuPayloadLengthInfo( HANDLE_FDK_BITSTREAM hBitStream, int AuLengthBits )
-{
- int restBytes;
-
- if( AuLengthBits % 8 )
- return TRANSPORTENC_INVALID_AU_LENGTH;
-
- while( AuLengthBits >= 255*8 ) {
- FDKwriteBits( hBitStream, 255, 8 ); /* 255 shows incomplete AU */
- AuLengthBits -= (255*8);
- }
-
- restBytes = (AuLengthBits) >> 3;
- FDKwriteBits( hBitStream, restBytes, 8 );
-
- return TRANSPORTENC_OK;
-}
-
-static
-TRANSPORTENC_ERROR transportEnc_LatmSetNrOfSubframes( HANDLE_LATM_STREAM hAss,
- INT noSubframes_next) /* nr of access units / payloads within a latm frame */
-{
- /* sanity chk */
- if (noSubframes_next < 1 || noSubframes_next > MAX_NR_OF_SUBFRAMES) {
- return TRANSPORTENC_LATM_INVALID_NR_OF_SUBFRAMES;
- }
-
- hAss->noSubframes_next = noSubframes_next;
-
- /* if at start then we can take over the value immediately, otherwise we have to wait for the next SMC */
- if ( (hAss->subFrameCnt == 0) && (hAss->latmFrameCounter == 0) ) {
- hAss->noSubframes = noSubframes_next;
- }
-
- return TRANSPORTENC_OK;
-}
-
-static
-int allStreamsSameTimeFraming( HANDLE_LATM_STREAM hAss, UCHAR noProgram, UCHAR noLayer[] /* return */ )
-{
- int prog, layer;
-
- signed int lastNoSamples = -1;
- signed int minFrameSamples = FDK_INT_MAX;
- signed int maxFrameSamples = 0;
-
- signed int highestSamplingRate = -1;
-
- for( prog=0; prog<noProgram; prog++ ) {
- noLayer[prog] = 0;
-
- for( layer=0; layer<LATM_MAX_LAYERS; layer++ )
- {
- if( hAss->config[prog][layer] != NULL )
- {
- INT hsfSamplesFrame;
-
- noLayer[prog]++;
-
- if( highestSamplingRate < 0 )
- highestSamplingRate = hAss->config[prog][layer]->samplingRate;
-
- hsfSamplesFrame = hAss->config[prog][layer]->samplesPerFrame * highestSamplingRate / hAss->config[prog][layer]->samplingRate;
-
- if( hsfSamplesFrame <= minFrameSamples ) minFrameSamples = hsfSamplesFrame;
- if( hsfSamplesFrame >= maxFrameSamples ) maxFrameSamples = hsfSamplesFrame;
-
- if( lastNoSamples == -1 ) {
- lastNoSamples = hsfSamplesFrame;
- } else {
- if( hsfSamplesFrame != lastNoSamples ) {
- return 0;
- }
- }
- }
- }
- }
-
- return 1;
-}
-
-/**
- * Initialize LATM/LOAS Stream and add layer 0 at program 0.
- */
-static
-TRANSPORTENC_ERROR transportEnc_InitLatmStream( HANDLE_LATM_STREAM hAss,
- int fractDelayPresent,
- signed int muxConfigPeriod, /* insert setup data every muxConfigPeriod frames */
- UINT audioMuxVersion,
- TRANSPORT_TYPE tt
- )
-{
- TRANSPORTENC_ERROR ErrorStatus = TRANSPORTENC_OK;
-
- if (hAss == NULL)
- return TRANSPORTENC_INVALID_PARAMETER;
-
- hAss->tt = tt;
-
- hAss->noProgram = 1;
-
- hAss->audioMuxVersion = audioMuxVersion;
-
- /* Fill noLayer array using hAss->config */
- hAss->allStreamsSameTimeFraming = allStreamsSameTimeFraming( hAss, hAss->noProgram, hAss->noLayer );
- /* Only allStreamsSameTimeFraming==1 is supported */
- FDK_ASSERT(hAss->allStreamsSameTimeFraming);
-
- hAss->fractDelayPresent = fractDelayPresent;
- hAss->otherDataLenBytes = 0;
-
- hAss->varMode = LATMVAR_SIMPLE_SEQUENCE;
-
- /* initialize counters */
- hAss->subFrameCnt = 0;
- hAss->noSubframes = DEFAULT_LATM_NR_OF_SUBFRAMES;
- hAss->noSubframes_next = DEFAULT_LATM_NR_OF_SUBFRAMES;
-
- /* sync layer related */
- hAss->audioMuxLengthBytes = 0;
-
- hAss->latmFrameCounter = 0;
- hAss->muxConfigPeriod = muxConfigPeriod;
-
- return ErrorStatus;
-}
-
-
-/**
- *
- */
-UINT transportEnc_LatmCountTotalBitDemandHeader ( HANDLE_LATM_STREAM hAss , unsigned int streamDataLength )
-{
- UINT bitDemand = 0;
-
- switch (hAss->tt) {
- case TT_MP4_LOAS:
- case TT_MP4_LATM_MCP0:
- case TT_MP4_LATM_MCP1:
- if (hAss->subFrameCnt == 0) {
- bitDemand = transportEnc_LatmCountFixBitDemandHeader ( hAss );
- }
- bitDemand += transportEnc_LatmCountVarBitDemandHeader ( hAss , streamDataLength /*- bitDemand*/);
- break;
- default:
- break;
- }
-
- return bitDemand;
-}
-
-static TRANSPORTENC_ERROR
-AdvanceAudioMuxElement (
- HANDLE_LATM_STREAM hAss,
- HANDLE_FDK_BITSTREAM hBs,
- int auBits,
- int bufferFullness,
- CSTpCallBacks *cb
- )
-{
- TRANSPORTENC_ERROR ErrorStatus = TRANSPORTENC_OK;
- int insertMuxSetup;
-
- /* Insert setup data to assemble Buffer */
- if (hAss->subFrameCnt == 0)
- {
- if (hAss->muxConfigPeriod > 0) {
- insertMuxSetup = (hAss->latmFrameCounter == 0);
- } else {
- insertMuxSetup = 0;
- }
-
- if (hAss->tt != TT_MP4_LATM_MCP0) {
- if( insertMuxSetup ) {
- FDKwriteBits( hBs, 0, 1 ); /* useSameStreamMux useNewStreamMux */
- CreateStreamMuxConfig(hAss, hBs, bufferFullness, cb);
- if (ErrorStatus != TRANSPORTENC_OK)
- return ErrorStatus;
- } else {
- FDKwriteBits( hBs, 1, 1 ); /* useSameStreamMux */
- }
- }
- }
-
- /* PayloadLengthInfo */
- {
- int prog, layer;
-
- for (prog = 0; prog < hAss->noProgram; prog++) {
- for (layer = 0; layer < hAss->noLayer[prog]; layer++) {
- ErrorStatus = WriteAuPayloadLengthInfo( hBs, auBits );
- if (ErrorStatus != TRANSPORTENC_OK)
- return ErrorStatus;
- }
- }
- }
- /* At this point comes the access unit. */
-
- return TRANSPORTENC_OK;
-}
-
-TRANSPORTENC_ERROR
-transportEnc_LatmWrite (
- HANDLE_LATM_STREAM hAss,
- HANDLE_FDK_BITSTREAM hBs,
- int auBits,
- int bufferFullness,
- CSTpCallBacks *cb
- )
-{
- TRANSPORTENC_ERROR ErrorStatus;
-
- if (hAss->subFrameCnt == 0) {
- /* Start new frame */
- FDKresetBitbuffer(hBs, BS_WRITER);
- }
-
- hAss->latmSubframeStart = FDKgetValidBits(hBs);
-
- /* Insert syncword and syncword distance
- - only if loas
- - we must update the syncword distance (=audiomuxlengthbytes) later
- */
- if( hAss->tt == TT_MP4_LOAS && hAss->subFrameCnt == 0)
- {
- /* Start new LOAS frame */
- FDKwriteBits( hBs, 0x2B7, 11 );
- hAss->audioMuxLengthBytes = 0;
- hAss->audioMuxLengthBytesPos = FDKgetValidBits( hBs ); /* store read pointer position */
- FDKwriteBits( hBs, hAss->audioMuxLengthBytes, 13 );
- }
-
- ErrorStatus = AdvanceAudioMuxElement(
- hAss,
- hBs,
- auBits,
- bufferFullness,
- cb
- );
-
- if (ErrorStatus != TRANSPORTENC_OK)
- return ErrorStatus;
-
- return ErrorStatus;
-}
-
-void transportEnc_LatmAdjustSubframeBits(HANDLE_LATM_STREAM hAss,
- int *bits)
-{
- /* Substract bits from possible previous subframe */
- *bits -= hAss->latmSubframeStart;
- /* Add fill bits */
- if (hAss->subFrameCnt == 0)
- *bits += hAss->fillBits;
-}
-
-
-void transportEnc_LatmGetFrame(HANDLE_LATM_STREAM hAss,
- HANDLE_FDK_BITSTREAM hBs,
- int *bytes)
-{
-
- hAss->subFrameCnt++;
- if (hAss->subFrameCnt >= hAss->noSubframes)
- {
-
- /* Add LOAS frame length if required. */
- if (hAss->tt == TT_MP4_LOAS)
- {
- int latmBytes;
-
- latmBytes = (FDKgetValidBits(hBs)+7) >> 3;
-
- /* write length info into assembler buffer */
- hAss->audioMuxLengthBytes = latmBytes - 3; /* 3=Syncword + length */
- {
- FDK_BITSTREAM tmpBuf;
-
- FDKinitBitStream( &tmpBuf, hBs->hBitBuf.Buffer, hBs->hBitBuf.bufSize, 0, BS_WRITER ) ;
- FDKpushFor( &tmpBuf, hAss->audioMuxLengthBytesPos );
- FDKwriteBits( &tmpBuf, hAss->audioMuxLengthBytes, 13 );
- FDKsyncCache( &tmpBuf );
- }
- }
-
- /* Write AudioMuxElement byte alignment fill bits */
- FDKwriteBits(hBs, 0, hAss->fillBits);
-
- FDK_ASSERT( (FDKgetValidBits(hBs) % 8) == 0);
-
- hAss->subFrameCnt = 0;
-
- FDKsyncCache(hBs);
- *bytes = (FDKgetValidBits(hBs) + 7)>>3;
- //FDKfetchBuffer(hBs, buffer, (UINT*)bytes);
-
- if (hAss->muxConfigPeriod > 0)
- {
- hAss->latmFrameCounter++;
-
- if (hAss->latmFrameCounter >= hAss->muxConfigPeriod) {
- hAss->latmFrameCounter = 0;
- hAss->noSubframes = hAss->noSubframes_next;
- }
- }
- } else {
- /* No data this time */
- *bytes = 0;
- }
-}
-
-/**
- * Init LATM/LOAS
- */
-TRANSPORTENC_ERROR transportEnc_Latm_Init(
- HANDLE_LATM_STREAM hAss,
- HANDLE_FDK_BITSTREAM hBs,
- CODER_CONFIG *layerConfig,
- UINT audioMuxVersion,
- TRANSPORT_TYPE tt,
- CSTpCallBacks *cb
- )
-{
- TRANSPORTENC_ERROR ErrorStatus;
- int fractDelayPresent = 0;
- int prog, layer;
-
- int setupDataDistanceFrames = layerConfig->headerPeriod;
-
- FDK_ASSERT(setupDataDistanceFrames>=0);
-
- for (prog=0; prog<LATM_MAX_PROGRAMS; prog++) {
- for (layer=0; layer<LATM_MAX_LAYERS; layer++) {
- hAss->config[prog][layer] = NULL;
- hAss->m_linfo[prog][layer].streamID = -1;
- }
- }
-
- hAss->config[0][0] = layerConfig;
- hAss->m_linfo[0][0].streamID = 0;
-
- ErrorStatus = transportEnc_InitLatmStream( hAss,
- fractDelayPresent,
- setupDataDistanceFrames,
- (audioMuxVersion)?1:0,
- tt
- );
- if (ErrorStatus != TRANSPORTENC_OK)
- goto bail;
-
- ErrorStatus = transportEnc_LatmSetNrOfSubframes(
- hAss,
- layerConfig->nSubFrames
- );
- if (ErrorStatus != TRANSPORTENC_OK)
- goto bail;
-
- /* Get the size of the StreamMuxConfig somehow */
- AdvanceAudioMuxElement(hAss, hBs, 0, 0, cb);
- //CreateStreamMuxConfig(hAss, hBs, 0);
-
-bail:
- return ErrorStatus;
-}
-
-
-
-
-
-