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support for AMR; it works inserting in the first byte of the demux_packet

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a 1-byte header that live555 seems to be stripping for some reason, although according
to the specs it should be there. Patch by Carl Eugen Hoyos.



git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22481 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
nicodvb 2007-03-06 22:53:52 +00:00
parent 5de53fffeb
commit f1c7edfaa6
2 changed files with 17 additions and 2 deletions
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15
libmpdemux/demux_rtp.cpp
View File

@ -362,6 +362,7 @@ static void afterReading(void* clientData, unsigned frameSize,
unsigned /*numTruncatedBytes*/,
struct timeval presentationTime,
unsigned /*durationInMicroseconds*/) {
int headersize = 0;
if (frameSize >= MAX_RTP_FRAME_SIZE) {
fprintf(stderr, "Saw an input frame too large (>=%d). Increase MAX_RTP_FRAME_SIZE in \"demux_rtp.cpp\".\n",
MAX_RTP_FRAME_SIZE);
@ -372,8 +373,11 @@ static void afterReading(void* clientData, unsigned frameSize,
if (frameSize > 0) demuxer->stream->eof = 0;
if (bufferQueue->readSource()->isAMRAudioSource())
headersize = 1;
demux_packet_t* dp = bufferQueue->dp;
resize_demux_packet(dp, frameSize);
resize_demux_packet(dp, frameSize + headersize);
// Set the packet's presentation time stamp, depending on whether or
// not our RTP source's timestamps have been synchronized yet:
@ -432,10 +436,13 @@ static demux_packet_t* getBuffer(demuxer_t* demuxer, demux_stream_t* ds,
// the demuxer's 'priv' field)
RTPState* rtpState = (RTPState*)(demuxer->priv);
ReadBufferQueue* bufferQueue = NULL;
int amr = 0;
if (ds == demuxer->video) {
bufferQueue = rtpState->videoBufferQueue;
} else if (ds == demuxer->audio) {
bufferQueue = rtpState->audioBufferQueue;
if (bufferQueue->readSource()->isAMRAudioSource())
amr = 1;
} else {
fprintf(stderr, "(demux_rtp)getBuffer: internal error: unknown stream\n");
return NULL;
@ -463,7 +470,7 @@ static demux_packet_t* getBuffer(demuxer_t* demuxer, demux_stream_t* ds,
// Schedule the read operation:
bufferQueue->blockingFlag = 0;
bufferQueue->readSource()->getNextFrame(dp->buffer, MAX_RTP_FRAME_SIZE,
bufferQueue->readSource()->getNextFrame(&dp->buffer[amr], MAX_RTP_FRAME_SIZE - amr,
afterReading, bufferQueue,
onSourceClosure, bufferQueue);
// Block ourselves until data becomes available:
@ -471,6 +478,10 @@ static demux_packet_t* getBuffer(demuxer_t* demuxer, demux_stream_t* ds,
= bufferQueue->readSource()->envir().taskScheduler();
scheduler.doEventLoop(&bufferQueue->blockingFlag);
if (amr)
dp->buffer[0] =
((AMRAudioSource*)bufferQueue->readSource())->lastFrameHeader();
// Set the "ptsBehind" result parameter:
if (bufferQueue->prevPacketPTS != 0.0
&& bufferQueue->prevPacketWasSynchronized

4
libmpdemux/demux_rtp_codec.cpp
View File

@ -184,6 +184,10 @@ void rtpCodecInitialize_audio(demuxer_t* demuxer,
wf->nBlockAlign = 1;
wf->wBitsPerSample = 8;
wf->cbSize = 0;
} else if (strcmp(subsession->codecName(), "AMR") == 0) {
wf->wFormatTag = sh_audio->format = mmioFOURCC('s','a','m','r');
} else if (strcmp(subsession->codecName(), "AMR-WB") == 0) {
wf->wFormatTag = sh_audio->format = mmioFOURCC('s','a','w','b');
} else if (strcmp(subsession->codecName(), "GSM") == 0) {
wf->wFormatTag = sh_audio->format = mmioFOURCC('a','g','s','m');
wf->nAvgBytesPerSec = 1650;