fenix/fdk-aac
1
0
Fork 0
mirror of https://github.com/mstorsjo/fdk-aac.git synced 2025-06-05 22:39:13 +02:00
Code Issues Projects Releases Wiki Activity

AAC Decoder: support 6.1/7.1 decoded as 5.1

Browse Source 
- Add 6.1 and 7.1 channel support including downmixer. Per default the
     decoder creates a 5.1 channel output for all streams with more than six
     encoded channels.
     Modified file(s):
        libPCMutils/include/pcmutils_lib.h
        libPCMutils/src/pcmutils_lib.cpp
        libAACdec/include/aacdecoder_lib.h
        libAACdec/src/aac_rom.h
        libAACdec/src/aacdecoder.cpp
        libAACdec/src/aac_ram.cpp
        libAACdec/src/aacdec_drc.cpp
        libAACdec/src/aacdecoder_lib.cpp
        libAACdec/src/aac_rom.cpp
        libAACdec/src/aacdecoder.h
        libSBRdec/include/sbrdecoder.h
        libSBRdec/src/sbrdec_drc.h
        libSBRdec/src/sbrdecoder.cpp
        libSBRdec/src/sbr_ram.cpp
        libSBRdec/src/sbr_ram.h
        libMpegTPDec/include/tp_data.h
        libMpegTPDec/include/tpdec_lib.h
        libMpegTPDec/src/version
        libMpegTPDec/src/tpdec_asc.cpp
        libMpegTPEnc/include/tp_data.h
        libMpegTPEnc/src/version
        libSYS/include/FDK_audio.h
        libSYS/src/genericStds.cpp

   - Fix error concealment modules fade-out/in mechanism.
     Modified file(s):
        libAACdec/src/conceal.cpp

Bug 9428126

Change-Id: I3230bd2072314b730911cd7ec1740e290cb1d254
This commit is contained in:
Jean-Michel Trivi
2013-12-27 16:13:22 -08:00
parent fa3eba1644
commit 47c680c622
25 changed files with 7613 additions and 7630 deletions
Download Patch File Download Diff File Expand all files Collapse all files

135
libAACdec/src/aacdecoder.cpp
View File

@@ -338,17 +338,22 @@ AAC_DECODER_ERROR CAacDecoder_AncDataParse (
\return Error code
*/
static AAC_DECODER_ERROR CDataStreamElement_Read (
HANDLE_AACDECODER self,
HANDLE_FDK_BITSTREAM bs,
CAncData *ancData,
HANDLE_AAC_DRC hDrcInfo,
HANDLE_TRANSPORTDEC pTp,
UCHAR *elementInstanceTag,
UINT alignmentAnchor )
{
HANDLE_TRANSPORTDEC pTp;
CAncData *ancData;
AAC_DECODER_ERROR error = AAC_DEC_OK;
UINT dataStart;
UINT dataStart, dseBits;
int dataByteAlignFlag, count;
FDK_ASSERT(self != NULL);
ancData = &self->ancData;
pTp = self->hInput;
int crcReg = transportDec_CrcStartReg(pTp, 0);
/* Element Instance Tag */
@@ -361,6 +366,7 @@ static AAC_DECODER_ERROR CDataStreamElement_Read (
if (count == 255) {
count += FDKreadBits(bs,8); /* EscCount */
}
dseBits = count*8;
if (dataByteAlignFlag) {
FDKbyteAlign(bs, alignmentAnchor);
@@ -372,20 +378,30 @@ static AAC_DECODER_ERROR CDataStreamElement_Read (
transportDec_CrcEndReg(pTp, crcReg);
{
INT readBits, dataBits = count<<3;
/* Move to the beginning of the data junk */
FDKpushBack(bs, dataStart-FDKgetValidBits(bs));
/* Read Anc data if available */
readBits = aacDecoder_drcMarkPayload( hDrcInfo, bs, DVB_DRC_ANC_DATA );
if (readBits != dataBits) {
/* Move to the end again. */
FDKpushBiDirectional(bs, FDKgetValidBits(bs)-dataStart+dataBits);
}
aacDecoder_drcMarkPayload( self->hDrcInfo, bs, DVB_DRC_ANC_DATA );
}
{
PCMDMX_ERROR dmxErr = PCMDMX_OK;
/* Move to the beginning of the data junk */
FDKpushBack(bs, dataStart-FDKgetValidBits(bs));
/* Read DMX meta-data */
dmxErr = pcmDmx_Parse (
self->hPcmUtils,
bs,
dseBits,
0 /* not mpeg2 */ );
}
/* Move to the very end of the element. */
FDKpushBiDirectional(bs, FDKgetValidBits(bs)-dataStart+dseBits);
return error;
}
@@ -774,7 +790,7 @@ LINKSPEC_CPP void CAacDecoder_Close(HANDLE_AACDECODER self)
if (self == NULL)
return;
for (ch=0; ch<(6); ch++) {
for (ch=0; ch<(8); ch++) {
if (self->pAacDecoderStaticChannelInfo[ch] != NULL) {
if (self->pAacDecoderStaticChannelInfo[ch]->pOverlapBuffer != NULL) {
FreeOverlapBuffer (&self->pAacDecoderStaticChannelInfo[ch]->pOverlapBuffer);
@@ -851,18 +867,19 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_Init(HANDLE_AACDECODER self, const CS
/* valid number of channels -> copy program config element (PCE) from ASC */
FDKmemcpy(&self->pce, &asc->m_progrConfigElement, sizeof(CProgramConfig));
/* Built element table */
el = CProgramConfig_GetElementTable(&asc->m_progrConfigElement, self->elements, 7);
for (; el<7; el++) {
el = CProgramConfig_GetElementTable(&asc->m_progrConfigElement, self->elements, (8), &self->chMapIndex);
for (; el<(8); el++) {
self->elements[el] = ID_NONE;
}
} else {
return AAC_DEC_UNSUPPORTED_CHANNELCONFIG;
}
} else {
self->chMapIndex = 0;
if (transportDec_GetFormat(self->hInput) == TT_MP4_ADTS) {
/* set default max_channels for memory allocation because in implicit channel mapping mode
we don't know the actual number of channels until we processed at least one raw_data_block(). */
ascChannels = (6);
ascChannels = (8);
} else {
return AAC_DEC_UNSUPPORTED_CHANNELCONFIG;
}
@@ -874,26 +891,34 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_Init(HANDLE_AACDECODER self, const CS
case 1: case 2: case 3: case 4: case 5: case 6:
ascChannels = asc->m_channelConfiguration;
break;
case 7:
case 11:
ascChannels = 7;
break;
case 7: case 12: case 14:
ascChannels = 8;
break;
default:
return AAC_DEC_UNSUPPORTED_CHANNELCONFIG;
}
if (ascChannels > (8)) {
return AAC_DEC_UNSUPPORTED_CHANNELCONFIG;
}
/* Initialize constant mappings for channel config 1-7 */
if (asc->m_channelConfiguration > 0) {
int el;
FDKmemcpy(self->elements, elementsTab[asc->m_channelConfiguration-1], sizeof(MP4_ELEMENT_ID)*FDKmin(7,7));
for (el=7; el<7; el++) {
FDKmemcpy(self->elements, elementsTab[asc->m_channelConfiguration-1], sizeof(MP4_ELEMENT_ID)*FDKmin(7,(8)));
for (el=7; el<(8); el++) {
self->elements[el] = ID_NONE;
}
for (ch=0; ch<ascChannels; ch++) {
self->chMapping[ch] = ch;
}
for (; ch<(6); ch++) {
for (; ch<(8); ch++) {
self->chMapping[ch] = 255;
}
self->chMapIndex = asc->m_channelConfiguration;
}
#ifdef TP_PCE_ENABLE
else {
@@ -909,9 +934,6 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_Init(HANDLE_AACDECODER self, const CS
self->streamInfo.channelConfig = asc->m_channelConfiguration;
if (ascChannels > (6)) {
return AAC_DEC_UNSUPPORTED_CHANNELCONFIG;
}
if (self->streamInfo.aot != asc->m_aot) {
self->streamInfo.aot = asc->m_aot;
ascChanged = 1;
@@ -1096,6 +1118,7 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
MP4_ELEMENT_ID type = ID_NONE; /* Current element type */
INT aacChannels=0; /* Channel counter for channels found in the bitstream */
int chOutMapIdx; /* Output channel mapping index (see comment below) */
INT auStartAnchor = (INT)FDKgetValidBits(bs); /* AU start bit buffer position for AU byte alignment */
@@ -1119,12 +1142,12 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
if (self->streamInfo.channelConfig == 0) {
/* Init Channel/Element mapping table */
for (ch=0; ch<(6); ch++) {
for (ch=0; ch<(8); ch++) {
self->chMapping[ch] = 255;
}
if (!CProgramConfig_IsValid(pce)) {
int el;
for (el=0; el<7; el++) {
for (el=0; el<(8); el++) {
self->elements[el] = ID_NONE;
}
}
@@ -1378,10 +1401,8 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
{
UCHAR element_instance_tag;
CDataStreamElement_Read( bs,
&self->ancData,
self->hDrcInfo,
self->hInput,
CDataStreamElement_Read( self,
bs,
&element_instance_tag,
auStartAnchor );
@@ -1401,29 +1422,6 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
//self->frameOK = 0;
}
}
{
UCHAR *pDvbAncData = NULL;
AAC_DECODER_ERROR ancErr;
int ancIndex;
int dvbAncDataSize = 0;
/* Ask how many anc data elements are in buffer */
ancIndex = self->ancData.nrElements - 1;
/* Get the last one (if available) */
ancErr = CAacDecoder_AncDataGet( &self->ancData,
ancIndex,
&pDvbAncData,
&dvbAncDataSize );
if (ancErr == AAC_DEC_OK) {
pcmDmx_ReadDvbAncData (
self->hPcmUtils,
pDvbAncData,
dvbAncDataSize,
0 /* not mpeg2 */ );
}
}
break;
#ifdef TP_PCE_ENABLE
@@ -1442,9 +1440,9 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
}
else if ( result > 1 ) {
/* Built element table */
int elIdx = CProgramConfig_GetElementTable(pce, self->elements, 7);
int elIdx = CProgramConfig_GetElementTable(pce, self->elements, (8), &self->chMapIndex);
/* Reset the remaining tabs */
for ( ; elIdx<7; elIdx++) {
for ( ; elIdx<(8); elIdx++) {
self->elements[elIdx] = ID_NONE;
}
/* Make new number of channel persistant */
@@ -1632,6 +1630,23 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
return ErrorStatus;
}
/* Setup the output channel mapping. The table below shows the four possibilities:
* # | chCfg | PCE | cChCfg | chOutMapIdx
* ---+-------+-----+--------+------------------
* 1 | > 0 | no | - | chCfg
* 2 | 0 | yes | > 0 | cChCfg
* 3 | 0 | yes | 0 | aacChannels || 0
* 4 | 0 | no | - | aacChannels || 0
* ---+-------+-----+--------+------------------
* Where chCfg is the channel configuration index from ASC and cChCfg is a corresponding chCfg
* derived from a given PCE. The variable aacChannels represents the number of channel found
* during bitstream decoding. Due to the structure of the mapping table it can only be used for
* mapping if its value is smaller than 7. Otherwise we use the fallback (0) which is a simple
* pass-through. The possibility #4 should appear only with MPEG-2 (ADTS) streams. This is
* mode is called "implicit channel mapping".
*/
chOutMapIdx = ((self->chMapIndex==0) && (aacChannels<7)) ? aacChannels : self->chMapIndex;
/*
Inverse transform
*/
@@ -1663,10 +1678,10 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
/* Setup offset and stride for time buffer traversal. */
if (interleaved) {
stride = aacChannels;
offset = self->channelOutputMapping[aacChannels-1][c];
offset = self->channelOutputMapping[chOutMapIdx][c];
} else {
stride = 1;
offset = self->channelOutputMapping[aacChannels-1][c] * self->streamInfo.aacSamplesPerFrame;
offset = self->channelOutputMapping[chOutMapIdx][c] * self->streamInfo.aacSamplesPerFrame;
}
@@ -1746,8 +1761,8 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
/* Reorder channel type information tables. */
{
AUDIO_CHANNEL_TYPE types[(6)];
UCHAR idx[(6)];
AUDIO_CHANNEL_TYPE types[(8)];
UCHAR idx[(8)];
int c;
FDK_ASSERT(sizeof(self->channelType) == sizeof(types));
@@ -1757,8 +1772,8 @@ LINKSPEC_CPP AAC_DECODER_ERROR CAacDecoder_DecodeFrame(
FDKmemcpy(idx, self->channelIndices, sizeof(idx));
for (c=0; c<aacChannels; c++) {
self->channelType[self->channelOutputMapping[aacChannels-1][c]] = types[c];
self->channelIndices[self->channelOutputMapping[aacChannels-1][c]] = idx[c];
self->channelType[self->channelOutputMapping[chOutMapIdx][c]] = types[c];
self->channelIndices[self->channelOutputMapping[chOutMapIdx][c]] = idx[c];
}
}