/**
\fn getPCMPacket
*/
bool ADM_edAudioTrackExternal::getPCMPacket(float *dest, uint32_t sizeMax, uint32_t *samples,uint64_t *odts)
{
uint32_t fillerSample=0; // FIXME : Store & fix the DTS error correctly!!!!
uint32_t inSize;
bool drop=false;
uint32_t outFrequency=codec->getOutputFrequency();
vprintf("[PCMPacketExt] request TRK %d:%x\n",0,(long int)0);
again:
*samples=0;
// Do we already have a packet ?
if(!packetBufferSize)
{
if(!refillPacketBuffer())
{
ADM_warning("Cannot refill\n");
return false;
}
}
// We do now
vprintf("[PCMPacketExt] Packet size %d, Got %d samples, time code %08lu lastDts=%08lu delta =%08ld\n",
packetBufferSize,packetBufferSamples,packetBufferDts,lastDts,packetBufferDts-lastDts);
// If lastDts is not initialized....
if(lastDts==ADM_AUDIO_NO_DTS) setDts(packetBufferDts);
vprintf("Last Dts=%s\n",ADM_us2plain(lastDts));
//
// The packet is ok, decode it...
//
uint32_t nbOut=0; // Nb sample as seen by codec
vprintf("externalPCM: Sending %d bytes to codec\n",packetBufferSize);
if(!codec->run(packetBuffer, packetBufferSize, dest, &nbOut))
{
packetBufferSize=0; // consume
ADM_warning("[PCMPacketExt::getPCMPacket] Track %d:%x : codec failed failed\n", 0,0);
return false;
}
packetBufferSize=0; // consume
// Compute how much decoded sample to compare with what demuxer said
uint32_t decodedSample=nbOut;
decodedSample/=wavHeader.channels;
if(!decodedSample) goto again;
#define ADM_MAX_JITTER 5000 // in samples, due to clock accuracy, it can be +er, -er, + er, -er etc etc
if(labs((int64_t)decodedSample-(int64_t)packetBufferSamples)>ADM_MAX_JITTER)
{
ADM_warning("[PCMPacketExt::getPCMPacket] Track %d:%x Demuxer was wrong %d vs %d samples!\n",
0,0,packetBufferSamples,decodedSample);
}
// Update infos
*samples=(decodedSample);
*odts=lastDts;
vprintf("externalPCM: got %d samples, PTS is now %s\n",decodedSample,ADM_us2plain(*odts));
advanceDtsByCustomSample(decodedSample,outFrequency);
vprintf("[Composer::getPCMPacket] Track %d:%x Adding %u decoded, Adding %u filler sample,"
" dts is now %lu\n", 0,(long int)0, decodedSample,fillerSample,lastDts);
ADM_assert(sizeMax>=(fillerSample+decodedSample)*wavHeader.channels);
vprintf("[getPCMext] %d samples, dts=%s\n",*samples,ADM_us2plain(*odts));
return true;
}
bool ADM_edAudioTrackFromVideo::getPCMPacket(float *dest, uint32_t sizeMax, uint32_t *samples,uint64_t *odts)
{
uint32_t fillerSample=0; // FIXME : Store & fix the DTS error correctly!!!!
uint32_t inSize;
bool drop=false;
static bool fail=false;
uint32_t outFrequency=getCurrentTrack()->codec->getOutputFrequency();
vprintf("[PCMPacket] request TRK %d:%x\n",myTrackNumber,(long int)getCurrentTrack());
again:
*samples=0;
ADM_audioStreamTrack *trk=getCurrentTrack();
if(!trk) return false;
// Do we already have a packet ?
if(!packetBufferSize)
{
if(!refillPacketBuffer())
{
if(fail==false)
ADM_warning("[Editor] Cannot refill audio\n");
fail=true;
return false;
}
}
// We do now
vprintf("[PCMPacket] TRK %d Got %d samples, time code %08lu lastDts=%08lu delta =%08ld\n",
myTrackNumber,packetBufferSamples,packetBufferDts,lastDts,packetBufferDts-lastDts);
fail=false;
// Check if the Dts matches
if(lastDts!=ADM_AUDIO_NO_DTS &&packetBufferDts!=ADM_AUDIO_NO_DTS)
{
if(abs((int64_t)(lastDts-packetBufferDts))>ADM_ALLOWED_DRIFT_US)
{
printf("[Composer::getPCMPacket] Track %d,%"PRIx64" : drift %d, computed :%"PRIu64" got %"PRIu64"\n",
(int)myTrackNumber,(uint64_t)trk,(int)(lastDts-packetBufferDts),lastDts,packetBufferDts);
if(packetBufferDts<lastDts)
{
printf("[Composer::getPCMPacket] Track %d:%"PRIx64" : Dropping packet %"PRIu32" last =%"PRIu32"\n",myTrackNumber,(uint64_t)trk,(uint32_t)(lastDts/1000),(uint32_t)(packetBufferDts/1000));
drop=true;
}else
{
// There is a "hole" in audio
// Let's add some filler
// Compute filler size
*odts=lastDts;
float f=packetBufferDts-lastDts; // in us
f*=outFrequency;
f/=1000000.;
// in samples!
uint32_t fillerSample=(uint32_t )(f+0.49);
uint32_t mx=sizeMax/trk->wavheader.channels;
if(mx<fillerSample) fillerSample=mx;
// arbitrary cap, max 4kSample in one go
// about 100 ms
if(fillerSample>4*1024)
{
fillerSample=4*1024;
}
uint32_t start=fillerSample*sizeof(float)*trk->wavheader.channels;
memset(dest,0,start);
advanceDtsByCustomSample(fillerSample,outFrequency);
dest+=fillerSample*trk->wavheader.channels;
*samples=fillerSample;
vprintf("[Composer::getPCMPacket] Track %d:%x Adding %u padding samples, dts is now %lu\n",
myTrackNumber,(long int)trk,fillerSample,lastDts);
return true;
}
}
}
// If lastDts is not initialized....
if(lastDts==ADM_AUDIO_NO_DTS) lastDts=packetBufferDts;
//
// The packet is ok, decode it...
//
uint32_t nbOut=0; // Nb sample as seen by codec
if(!trk->codec->run(packetBuffer, packetBufferSize, dest, &nbOut))
{
packetBufferSize=0; // consume
ADM_warning(ADM_PRINT_ERROR,"[Composer::getPCMPacket] Track %d:%x : codec failed failed\n",
myTrackNumber,trk);
return false;
}
packetBufferSize=0; // consume
// Compute how much decoded sample to compare with what demuxer said
uint32_t decodedSample=nbOut;
decodedSample/=trk->wavheader.channels;
if(!decodedSample) goto again;
#define ADM_MAX_JITTER 5000 // in samples, due to clock accuracy, it can be +er, -er, + er, -er etc etc
if (abs((int64_t)(decodedSample-packetBufferSamples)) > ADM_MAX_JITTER)
{
ADM_warning("[Composer::getPCMPacket] Track %d:%x Demuxer was wrong %d vs %d samples!\n",
myTrackNumber,trk,packetBufferSamples,decodedSample);
}
// This packet has been dropped (too early packt), try the next one
if(drop==true)
{
// TODO Check if the packet somehow overlaps, i.e. starts too early but finish ok
goto again;
}
// Update infos
*samples=(decodedSample);
*odts=lastDts;
advanceDtsByCustomSample(decodedSample,outFrequency);
vprintf("[Composer::getPCMPacket] Track %d:%x Adding %u decoded, Adding %u filler sample, dts is now %lu\n",
myTrackNumber,(long int)trk, decodedSample,fillerSample,lastDts);
ADM_assert(sizeMax>=(fillerSample+decodedSample)*trk->wavheader.channels);
return true;
}
