live: MPEG2TransportStreamFramer Class Reference

typedef void( FramedSource::afterGettingFunc)(void *clientData, unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime, unsigned durationInMicroseconds) [inherited]

Definition at line 36 of file FramedSource.hh.

typedef void( FramedSource::onCloseFunc)(void *clientData) [inherited]

Definition at line 40 of file FramedSource.hh.

MPEG2TransportStreamFramer::MPEG2TransportStreamFramer	(	UsageEnvironment &	env,
		FramedSource *	inputSource
	)			`[protected]`

Definition at line 74 of file MPEG2TransportStreamFramer.cpp.

References HashTable::create(), and ONE_WORD_HASH_KEYS.

00075   : FramedFilter(env, inputSource),
00076     fTSPacketCount(0), fTSPacketDurationEstimate(0.0), fTSPCRCount(0),
00077     fLimitNumTSPacketsToStream(False), fNumTSPacketsToStream(0) {
00078   fPIDStatusTable = HashTable::create(ONE_WORD_HASH_KEYS);
00079 }

MPEG2TransportStreamFramer::~MPEG2TransportStreamFramer ( ) [protected, virtual]

Definition at line 81 of file MPEG2TransportStreamFramer.cpp.

References clearPIDStatusTable(), and fPIDStatusTable.

00081                                                         {
00082   clearPIDStatusTable();
00083   delete fPIDStatusTable;
00084 }

MPEG2TransportStreamFramer * MPEG2TransportStreamFramer::createNew	(	UsageEnvironment &	env,
		FramedSource *	inputSource
	)			`[static]`

Definition at line 69 of file MPEG2TransportStreamFramer.cpp.

References env.

Referenced by MPEG2TransportUDPServerMediaSubsession::createNewStreamSource(), MPEG2TransportFileServerMediaSubsession::createNewStreamSource(), and MediaSubsession::createSourceObjects().

00069                                                             {
00070   return new MPEG2TransportStreamFramer(env, inputSource);
00071 }

u_int64_t MPEG2TransportStreamFramer::tsPacketCount ( ) const [inline]

Definition at line 39 of file MPEG2TransportStreamFramer.hh.

References fTSPacketCount.

Referenced by updateTSPacketDurationEstimate(), and ClientTrickPlayState::updateTSRecordNum().

00039 { return fTSPacketCount; }

void MPEG2TransportStreamFramer::changeInputSource ( FramedSource * newInputSource ) [inline]

Definition at line 41 of file MPEG2TransportStreamFramer.hh.

References FramedFilter::fInputSource.

Referenced by ClientTrickPlayState::updateStateOnScaleChange().

00041 { fInputSource = newInputSource; }

void MPEG2TransportStreamFramer::clearPIDStatusTable ( )

Definition at line 86 of file MPEG2TransportStreamFramer.cpp.

References fPIDStatusTable, NULL, and HashTable::RemoveNext().

Referenced by doStopGettingFrames(), ClientTrickPlayState::updateStateFromNPT(), and ~MPEG2TransportStreamFramer().

00086                                                      {
00087   PIDStatus* pidStatus;
00088   while ((pidStatus = (PIDStatus*)fPIDStatusTable->RemoveNext()) != NULL) {
00089     delete pidStatus;
00090   }
00091 }

void MPEG2TransportStreamFramer::setNumTSPacketsToStream ( unsigned long numTSRecordsToStream )

Definition at line 93 of file MPEG2TransportStreamFramer.cpp.

References fLimitNumTSPacketsToStream, and fNumTSPacketsToStream.

Referenced by ClientTrickPlayState::updateStateFromNPT().

00093                                                                                            {
00094   fNumTSPacketsToStream = numTSRecordsToStream;
00095   fLimitNumTSPacketsToStream = numTSRecordsToStream > 0;
00096 }

void MPEG2TransportStreamFramer::doGetNextFrame ( ) [private, virtual]

Implements FramedSource.

Definition at line 98 of file MPEG2TransportStreamFramer.cpp.

References afterGettingFrame(), FramedSource::fFrameSize, FramedFilter::fInputSource, fLimitNumTSPacketsToStream, FramedSource::fMaxSize, fNumTSPacketsToStream, FramedSource::fTo, FramedSource::getNextFrame(), FramedSource::handleClosure(), and TRANSPORT_PACKET_SIZE.

00098                                                 {
00099   if (fLimitNumTSPacketsToStream) {
00100     if (fNumTSPacketsToStream == 0) {
00101       handleClosure(this);
00102       return;
00103     }
00104     if (fNumTSPacketsToStream*TRANSPORT_PACKET_SIZE < fMaxSize) {
00105       fMaxSize = fNumTSPacketsToStream*TRANSPORT_PACKET_SIZE;
00106     }
00107   }
00108 
00109   // Read directly from our input source into our client's buffer:
00110   fFrameSize = 0;
00111   fInputSource->getNextFrame(fTo, fMaxSize,
00112                              afterGettingFrame, this,
00113                              FramedSource::handleClosure, this);
00114 }

void MPEG2TransportStreamFramer::doStopGettingFrames ( ) [private, virtual]

Reimplemented from FramedFilter.

Definition at line 116 of file MPEG2TransportStreamFramer.cpp.

References clearPIDStatusTable(), FramedFilter::doStopGettingFrames(), fTSPacketCount, and fTSPCRCount.

00116                                                      {
00117   FramedFilter::doStopGettingFrames();
00118   fTSPacketCount = 0;
00119   fTSPCRCount = 0;
00120 
00121   clearPIDStatusTable();
00122 }

void MPEG2TransportStreamFramer::afterGettingFrame	(	void *	clientData,
		unsigned	frameSize,
		unsigned	numTruncatedBytes,
		struct timeval	presentationTime,
		unsigned	durationInMicroseconds
	)			`[static, private]`

Definition at line 125 of file MPEG2TransportStreamFramer.cpp.

References afterGettingFrame1().

Referenced by afterGettingFrame1(), and doGetNextFrame().

00128                                                          {
00129   MPEG2TransportStreamFramer* framer = (MPEG2TransportStreamFramer*)clientData;
00130   framer->afterGettingFrame1(frameSize, presentationTime);
00131 }

void MPEG2TransportStreamFramer::afterGettingFrame1	(	unsigned	frameSize,
		struct timeval	presentationTime
	)			`[private]`

Definition at line 135 of file MPEG2TransportStreamFramer.cpp.

References FramedSource::afterGetting(), afterGettingFrame(), Medium::envir(), FramedSource::fDurationInMicroseconds, FramedSource::fFrameSize, FramedFilter::fInputSource, fNumTSPacketsToStream, FramedSource::fPresentationTime, FramedSource::fTo, fTSPacketDurationEstimate, FramedSource::getNextFrame(), FramedSource::handleClosure(), NULL, TRANSPORT_PACKET_SIZE, TRANSPORT_SYNC_BYTE, and updateTSPacketDurationEstimate().

Referenced by afterGettingFrame().

00136                                                                                      {
00137   fFrameSize += frameSize;
00138   unsigned const numTSPackets = fFrameSize/TRANSPORT_PACKET_SIZE;
00139   fNumTSPacketsToStream -= numTSPackets;
00140   fFrameSize = numTSPackets*TRANSPORT_PACKET_SIZE; // an integral # of TS packets
00141   if (fFrameSize == 0) {
00142     // We didn't read a complete TS packet; assume that the input source has closed.
00143     handleClosure(this);
00144     return;
00145   }
00146 
00147   // Make sure the data begins with a sync byte:
00148   unsigned syncBytePosition;
00149   for (syncBytePosition = 0; syncBytePosition < fFrameSize; ++syncBytePosition) {
00150     if (fTo[syncBytePosition] == TRANSPORT_SYNC_BYTE) break;
00151   }
00152   if (syncBytePosition == fFrameSize) {
00153     envir() << "No Transport Stream sync byte in data.";
00154     handleClosure(this);
00155     return;
00156   } else if (syncBytePosition > 0) {
00157     // There's a sync byte, but not at the start of the data.  Move the good data
00158     // to the start of the buffer, then read more to fill it up again:
00159     memmove(fTo, &fTo[syncBytePosition], fFrameSize - syncBytePosition);
00160     fFrameSize -= syncBytePosition;
00161     fInputSource->getNextFrame(&fTo[fFrameSize], syncBytePosition,
00162                                afterGettingFrame, this,
00163                                FramedSource::handleClosure, this);
00164     return;
00165   } // else normal case: the data begins with a sync byte
00166 
00167   fPresentationTime = presentationTime;
00168 
00169   // Scan through the TS packets that we read, and update our estimate of
00170   // the duration of each packet:
00171   struct timeval tvNow;
00172   gettimeofday(&tvNow, NULL);
00173   double timeNow = tvNow.tv_sec + tvNow.tv_usec/1000000.0;
00174   for (unsigned i = 0; i < numTSPackets; ++i) {
00175     updateTSPacketDurationEstimate(&fTo[i*TRANSPORT_PACKET_SIZE], timeNow);
00176   }
00177 
00178   fDurationInMicroseconds
00179     = numTSPackets * (unsigned)(fTSPacketDurationEstimate*1000000);
00180 
00181   // Complete the delivery to our client:
00182   afterGetting(this);
00183 }

void MPEG2TransportStreamFramer::updateTSPacketDurationEstimate	(	unsigned char *	pkt,
		double	timeNow
	)			`[private]`

Definition at line 186 of file MPEG2TransportStreamFramer.cpp.

References HashTable::Add(), Medium::envir(), PIDStatus::firstClock, PIDStatus::firstRealTime, fPIDStatusTable, fTSPacketCount, fTSPacketDurationEstimate, fTSPCRCount, PIDStatus::lastClock, PIDStatus::lastPacketNum, PIDStatus::lastRealTime, HashTable::Lookup(), MAX_PLAYOUT_BUFFER_DURATION, NEW_DURATION_WEIGHT, NULL, PCR_PERIOD_VARIATION_RATIO, TIME_ADJUSTMENT_FACTOR, TRANSPORT_SYNC_BYTE, and tsPacketCount().

Referenced by afterGettingFrame1().

00186                                                                    {
00187   // Sanity check: Make sure we start with the sync byte:
00188   if (pkt[0] != TRANSPORT_SYNC_BYTE) {
00189     envir() << "Missing sync byte!\n";
00190     return;
00191   }
00192 
00193   ++fTSPacketCount;
00194 
00195   // If this packet doesn't contain a PCR, then we're not interested in it:
00196   u_int8_t const adaptation_field_control = (pkt[3]&0x30)>>4;
00197   if (adaptation_field_control != 2 && adaptation_field_control != 3) return;
00198       // there's no adaptation_field
00199 
00200   u_int8_t const adaptation_field_length = pkt[4];
00201   if (adaptation_field_length == 0) return;
00202 
00203   u_int8_t const discontinuity_indicator = pkt[5]&0x80;
00204   u_int8_t const pcrFlag = pkt[5]&0x10;
00205   if (pcrFlag == 0) return; // no PCR
00206 
00207   // There's a PCR.  Get it, and the PID:
00208   ++fTSPCRCount;
00209   u_int32_t pcrBaseHigh = (pkt[6]<<24)|(pkt[7]<<16)|(pkt[8]<<8)|pkt[9];
00210   double clock = pcrBaseHigh/45000.0;
00211   if ((pkt[10]&0x80) != 0) clock += 1/90000.0; // add in low-bit (if set)
00212   unsigned short pcrExt = ((pkt[10]&0x01)<<8) | pkt[11];
00213   clock += pcrExt/27000000.0;
00214 
00215   unsigned pid = ((pkt[1]&0x1F)<<8) | pkt[2];
00216 
00217   // Check whether we already have a record of a PCR for this PID:
00218   PIDStatus* pidStatus = (PIDStatus*)(fPIDStatusTable->Lookup((char*)pid));
00219 
00220   if (pidStatus == NULL) {
00221     // We're seeing this PID's PCR for the first time:
00222     pidStatus = new PIDStatus(clock, timeNow);
00223     fPIDStatusTable->Add((char*)pid, pidStatus);
00224 #ifdef DEBUG_PCR
00225     fprintf(stderr, "PID 0x%x, FIRST PCR 0x%08x+%d:%03x == %f @ %f, pkt #%lu\n", pid, pcrBaseHigh, pkt[10]>>7, pcrExt, clock, timeNow, fTSPacketCount);
00226 #endif
00227   } else {
00228     // We've seen this PID's PCR before; update our per-packet duration estimate:
00229     int64_t packetsSinceLast = (int64_t)(fTSPacketCount - pidStatus->lastPacketNum);
00230       // it's "int64_t" because some compilers can't convert "u_int64_t" -> "double"
00231     double durationPerPacket = (clock - pidStatus->lastClock)/packetsSinceLast;
00232 
00233     // Hack (suggested by "Romain"): Don't update our estimate if this PCR appeared unusually quickly.
00234     // (This can produce more accurate estimates for wildly VBR streams.)
00235     double meanPCRPeriod = 0.0;
00236     if (fTSPCRCount > 0) {
00237       double tsPacketCount = (double)(int64_t)fTSPacketCount;
00238       double tsPCRCount = (double)(int64_t)fTSPCRCount;
00239       meanPCRPeriod = tsPacketCount/tsPCRCount;
00240       if (packetsSinceLast < meanPCRPeriod*PCR_PERIOD_VARIATION_RATIO) return;
00241     }
00242 
00243     if (fTSPacketDurationEstimate == 0.0) { // we've just started
00244       fTSPacketDurationEstimate = durationPerPacket;
00245     } else if (discontinuity_indicator == 0 && durationPerPacket >= 0.0) {
00246       fTSPacketDurationEstimate
00247         = durationPerPacket*NEW_DURATION_WEIGHT
00248         + fTSPacketDurationEstimate*(1-NEW_DURATION_WEIGHT);
00249 
00250       // Also adjust the duration estimate to try to ensure that the transmission
00251       // rate matches the playout rate:
00252       double transmitDuration = timeNow - pidStatus->firstRealTime;
00253       double playoutDuration = clock - pidStatus->firstClock;
00254       if (transmitDuration > playoutDuration) {
00255         fTSPacketDurationEstimate *= TIME_ADJUSTMENT_FACTOR; // reduce estimate
00256       } else if (transmitDuration + MAX_PLAYOUT_BUFFER_DURATION < playoutDuration) {
00257         fTSPacketDurationEstimate /= TIME_ADJUSTMENT_FACTOR; // increase estimate
00258       }
00259     } else {
00260       // the PCR has a discontinuity from its previous value; don't use it now,
00261       // but reset our PCR and real-time values to compensate:
00262       pidStatus->firstClock = clock;
00263       pidStatus->firstRealTime = timeNow;
00264     }
00265 #ifdef DEBUG_PCR
00266     fprintf(stderr, "PID 0x%x, PCR 0x%08x+%d:%03x == %f @ %f (diffs %f @ %f), pkt #%lu, discon %d => this duration %f, new estimate %f, mean PCR period=%f\n", pid, pcrBaseHigh, pkt[10]>>7, pcrExt, clock, timeNow, clock - pidStatus->firstClock, timeNow - pidStatus->firstRealTime, fTSPacketCount, discontinuity_indicator != 0, durationPerPacket, fTSPacketDurationEstimate, meanPCRPeriod );
00267 #endif
00268   }
00269 
00270   pidStatus->lastClock = clock;
00271   pidStatus->lastRealTime = timeNow;
00272   pidStatus->lastPacketNum = fTSPacketCount;
00273 }

FramedSource* FramedFilter::inputSource ( ) const [inline, inherited]

Definition at line 30 of file FramedFilter.hh.

References FramedFilter::fInputSource.

Referenced by AC3AudioStreamFramer::AC3AudioStreamFramer(), H264VideoRTPSink::auxSDPLine(), EndianSwap16::createNew(), HostFromNetworkOrder16::createNew(), NetworkFromHostOrder16::createNew(), PCMFromuLawAudioSource::createNew(), QCELPDeinterleaver::createNew(), MPEG4VideoStreamFramer::createNew(), MPEG4VideoStreamDiscreteFramer::createNew(), MPEG2IFrameIndexFromTransportStream::createNew(), MPEG1or2VideoStreamFramer::createNew(), MPEG1or2VideoStreamDiscreteFramer::createNew(), MPEG1or2AudioStreamFramer::createNew(), MP3Transcoder::createNew(), MP3ADUTranscoder::createNew(), MP3ADUdeinterleaver::createNew(), MP3ADUinterleaver::createNew(), MP3FromADUSource::createNew(), ADUFromMP3Source::createNew(), H264VideoStreamDiscreteFramer::createNew(), H263plusVideoStreamFramer::createNew(), DVVideoStreamFramer::createNew(), AC3AudioStreamFramer::createNew(), H264VideoRTPSink::doSpecialFrameHandling(), H264VideoFileServerMediaSubsession::getAuxSDPLine(), MP3AudioFileServerMediaSubsession::getBaseStreams(), MP3ADUinterleaverBase::getInputSource(), H263plusVideoStreamFramer::H263plusVideoStreamFramer(), MPEG1or2VideoStreamFramer::MPEG1or2VideoStreamFramer(), MPEG4VideoStreamFramer::MPEG4VideoStreamFramer(), H264VideoMatroskaFileServerMediaSubsession::seekStreamSource(), DVVideoFileServerMediaSubsession::seekStreamSource(), and ClientTrickPlayState::setSource().

00030 { return fInputSource; }

void FramedFilter::detachInputSource ( ) [inline, inherited]

Definition at line 33 of file FramedFilter.hh.

References FramedFilter::fInputSource, and NULL.

Referenced by H264FUAFragmenter::~H264FUAFragmenter(), and T140IdleFilter::~T140IdleFilter().

00033 { fInputSource = NULL; }

char const * FramedFilter::MIMEtype ( ) const [protected, virtual, inherited]

Reimplemented from MediaSource.

Reimplemented in ADUFromMP3Source, and MP3FromADUSource.

Definition at line 39 of file FramedFilter.cpp.

References FramedFilter::fInputSource, MediaSource::MIMEtype(), and NULL.

00039                                          {
00040   if (fInputSource == NULL) return "";
00041 
00042   return fInputSource->MIMEtype();
00043 }

void FramedFilter::getAttributes ( ) const [protected, virtual, inherited]

Reimplemented from MediaSource.

Reimplemented in MP3ADUTranscoder.

Definition at line 45 of file FramedFilter.cpp.

References FramedFilter::fInputSource, MediaSource::getAttributes(), and NULL.

00045                                        {
00046   if (fInputSource != NULL) fInputSource->getAttributes();
00047 }

Boolean FramedSource::lookupByName	(	UsageEnvironment &	env,
		char const *	sourceName,
		FramedSource *&	resultSource
	)			`[static, inherited]`

Definition at line 41 of file FramedSource.cpp.

References env, False, MediaSource::isFramedSource(), MediaSource::lookupByName(), NULL, and True.

Referenced by MP3ADUinterleaverBase::getInputSource().

00042                                                                 {
00043   resultSource = NULL; // unless we succeed
00044 
00045   MediaSource* source;
00046   if (!MediaSource::lookupByName(env, sourceName, source)) return False;
00047 
00048   if (!source->isFramedSource()) {
00049     env.setResultMsg(sourceName, " is not a framed source");
00050     return False;
00051   }
00052 
00053   resultSource = (FramedSource*)source;
00054   return True;
00055 }

Boolean MediaSource::lookupByName	(	UsageEnvironment &	env,
		char const *	sourceName,
		MediaSource *&	resultSource
	)			`[static, inherited]`

Definition at line 65 of file MediaSource.cpp.

References env, False, Medium::isSource(), Medium::lookupByName(), NULL, and True.

Referenced by RTPSource::lookupByName(), and FramedSource::lookupByName().

00067                                                               {
00068   resultSource = NULL; // unless we succeed
00069 
00070   Medium* medium;
00071   if (!Medium::lookupByName(env, sourceName, medium)) return False;
00072 
00073   if (!medium->isSource()) {
00074     env.setResultMsg(sourceName, " is not a media source");
00075     return False;
00076   }
00077 
00078   resultSource = (MediaSource*)medium;
00079   return True;
00080 }

Boolean Medium::lookupByName	(	UsageEnvironment &	env,
		char const *	mediumName,
		Medium *&	resultMedium
	)			`[static, inherited]`

Definition at line 41 of file Media.cpp.

References env, False, MediaLookupTable::lookup(), NULL, MediaLookupTable::ourMedia(), UsageEnvironment::setResultMsg(), and True.

Referenced by ServerMediaSession::lookupByName(), RTSPServer::lookupByName(), RTSPClient::lookupByName(), RTCPInstance::lookupByName(), MediaSource::lookupByName(), MediaSink::lookupByName(), MediaSession::lookupByName(), and DarwinInjector::lookupByName().

00042                                                          {
00043   resultMedium = MediaLookupTable::ourMedia(env)->lookup(mediumName);
00044   if (resultMedium == NULL) {
00045     env.setResultMsg("Medium ", mediumName, " does not exist");
00046     return False;
00047   }
00048 
00049   return True;
00050 }

void FramedSource::getNextFrame	(	unsigned char *	to,
		unsigned	maxSize,
		afterGettingFunc *	afterGettingFunc,
		void *	afterGettingClientData,
		onCloseFunc *	onCloseFunc,
		void *	onCloseClientData
	)			`[inherited]`

Definition at line 57 of file FramedSource.cpp.

References FramedSource::doGetNextFrame(), Medium::envir(), FramedSource::fAfterGettingClientData, FramedSource::fAfterGettingFunc, FramedSource::fDurationInMicroseconds, FramedSource::fIsCurrentlyAwaitingData, FramedSource::fMaxSize, FramedSource::fNumTruncatedBytes, FramedSource::fOnCloseClientData, FramedSource::fOnCloseFunc, FramedSource::fTo, UsageEnvironment::internalError(), and True.

00061                                                          {
00062   // Make sure we're not already being read:
00063   if (fIsCurrentlyAwaitingData) {
00064     envir() << "FramedSource[" << this << "]::getNextFrame(): attempting to read more than once at the same time!\n";
00065     envir().internalError();
00066   }
00067 
00068   fTo = to;
00069   fMaxSize = maxSize;
00070   fNumTruncatedBytes = 0; // by default; could be changed by doGetNextFrame()
00071   fDurationInMicroseconds = 0; // by default; could be changed by doGetNextFrame()
00072   fAfterGettingFunc = afterGettingFunc;
00073   fAfterGettingClientData = afterGettingClientData;
00074   fOnCloseFunc = onCloseFunc;
00075   fOnCloseClientData = onCloseClientData;
00076   fIsCurrentlyAwaitingData = True;
00077 
00078   doGetNextFrame();
00079 }

void FramedSource::handleClosure ( void * clientData ) [static, inherited]

Definition at line 95 of file FramedSource.cpp.

References False, FramedSource::fIsCurrentlyAwaitingData, FramedSource::fOnCloseClientData, FramedSource::fOnCloseFunc, and NULL.

00095                                                  {
00096   FramedSource* source = (FramedSource*)clientData;
00097   source->fIsCurrentlyAwaitingData = False; // because we got a close instead
00098   if (source->fOnCloseFunc != NULL) {
00099     (*(source->fOnCloseFunc))(source->fOnCloseClientData);
00100   }
00101 }

void FramedSource::stopGettingFrames ( ) [inherited]

Definition at line 103 of file FramedSource.cpp.

References FramedSource::doStopGettingFrames(), False, and FramedSource::fIsCurrentlyAwaitingData.

Referenced by StreamReplicator::deactivateStreamReplica(), QCELPDeinterleaver::doStopGettingFrames(), MPEG2TransportStreamFromPESSource::doStopGettingFrames(), FramedFilter::doStopGettingFrames(), AMRDeinterleaver::doStopGettingFrames(), and MediaSink::stopPlaying().

00103                                      {
00104   fIsCurrentlyAwaitingData = False; // indicates that we can be read again
00105 
00106   // Perform any specialized action now:
00107   doStopGettingFrames();
00108 }

unsigned FramedSource::maxFrameSize ( ) const [virtual, inherited]

Reimplemented in MPEG1or2DemuxedElementaryStream.

Definition at line 116 of file FramedSource.cpp.

Referenced by StreamParser::ensureValidBytes1().

00116                                           {
00117   // By default, this source has no maximum frame size.
00118   return 0;
00119 }

Boolean FramedSource::isCurrentlyAwaitingData ( ) const [inline, inherited]

void FramedSource::afterGetting ( FramedSource * source ) [static, inherited]

Definition at line 81 of file FramedSource.cpp.

References FramedSource::fAfterGettingClientData, FramedSource::fAfterGettingFunc, False, FramedSource::fDurationInMicroseconds, FramedSource::fFrameSize, FramedSource::fIsCurrentlyAwaitingData, FramedSource::fNumTruncatedBytes, FramedSource::fPresentationTime, and NULL.

00081                                                     {
00082   source->fIsCurrentlyAwaitingData = False;
00083       // indicates that we can be read again
00084       // Note that this needs to be done here, in case the "fAfterFunc"
00085       // called below tries to read another frame (which it usually will)
00086 
00087   if (source->fAfterGettingFunc != NULL) {
00088     (*(source->fAfterGettingFunc))(source->fAfterGettingClientData,
00089                                    source->fFrameSize, source->fNumTruncatedBytes,
00090                                    source->fPresentationTime,
00091                                    source->fDurationInMicroseconds);
00092   }
00093 }

Boolean MediaSource::isRTPSource ( ) const [virtual, inherited]

Reimplemented in RTPSource.

Definition at line 43 of file MediaSource.cpp.

References False.

Referenced by RTPSource::lookupByName().

00043                                        {
00044   return False; // default implementation
00045 }

Boolean MediaSource::isMPEG1or2VideoStreamFramer ( ) const [virtual, inherited]

Reimplemented in MPEG1or2VideoStreamFramer.

Definition at line 46 of file MediaSource.cpp.

References False.

Referenced by MPEG1or2VideoRTPSink::sourceIsCompatibleWithUs().

00046                                                        {
00047   return False; // default implementation
00048 }

Boolean MediaSource::isMPEG4VideoStreamFramer ( ) const [virtual, inherited]

Reimplemented in MPEG4VideoStreamFramer.

Definition at line 49 of file MediaSource.cpp.

References False.

Referenced by MPEG4ESVideoRTPSink::sourceIsCompatibleWithUs().

00049                                                     {
00050   return False; // default implementation
00051 }

Boolean MediaSource::isH264VideoStreamFramer ( ) const [virtual, inherited]

Reimplemented in H264VideoStreamFramer.

Definition at line 52 of file MediaSource.cpp.

References False.

Referenced by H264VideoRTPSink::sourceIsCompatibleWithUs().

00052                                                    {
00053   return False; // default implementation
00054 }

Boolean MediaSource::isDVVideoStreamFramer ( ) const [virtual, inherited]

Reimplemented in DVVideoStreamFramer.

Definition at line 55 of file MediaSource.cpp.

References False.

Referenced by DVVideoRTPSink::sourceIsCompatibleWithUs().

00055                                                  {
00056   return False; // default implementation
00057 }

Boolean MediaSource::isJPEGVideoSource ( ) const [virtual, inherited]

Reimplemented in JPEGVideoSource.

Definition at line 58 of file MediaSource.cpp.

References False.

Referenced by JPEGVideoRTPSink::sourceIsCompatibleWithUs().

00058                                              {
00059   return False; // default implementation
00060 }

Boolean MediaSource::isAMRAudioSource ( ) const [virtual, inherited]

Reimplemented in AMRAudioSource.

Definition at line 61 of file MediaSource.cpp.

References False.

Referenced by AMRAudioRTPSink::sourceIsCompatibleWithUs(), and AMRAudioFileSink::sourceIsCompatibleWithUs().

00061                                             {
00062   return False; // default implementation
00063 }

void Medium::close	(	UsageEnvironment &	env,
		char const *	mediumName
	)			`[static, inherited]`

Definition at line 52 of file Media.cpp.

References env, MediaLookupTable::ourMedia(), and MediaLookupTable::remove().

Referenced by afterPlaying(), Medium::close(), closeMediaSinks(), OnDemandServerMediaSubsession::closeStreamSource(), continueAfterTEARDOWN(), WAVAudioFileSource::createNew(), QuickTimeFileSink::createNew(), QCELPAudioRTPSource::createNew(), MP3HTTPSource::createNew(), MP3FileSource::createNew(), AVIFileSink::createNew(), AMRAudioRTPSource::createNew(), WAVAudioFileServerMediaSubsession::createNewStreamSource(), MPEG1or2DemuxedServerMediaSubsession::createNewStreamSource(), MediaSubsession::deInitiate(), RTSPServerSupportingHTTPStreaming::RTSPClientSessionSupportingHTTPStreaming::handleHTTPCmd_StreamingGET(), MediaSubsession::initiate(), MPEG1or2ProgramStreamFileDuration(), MPEG1or2Demux::noteElementaryStreamDeletion(), ByteStreamMultiFileSource::onSourceClosure1(), StreamState::reclaim(), RTSPServer::removeServerMediaSession(), OnDemandServerMediaSubsession::sdpLines(), shutdownStream(), T140TextRTPSink::stopPlaying(), H264VideoRTPSink::stopPlaying(), subsessionAfterPlaying(), ClientTrickPlayState::updateStateOnScaleChange(), AMRDeinterleaver::~AMRDeinterleaver(), ByteStreamMultiFileSource::~ByteStreamMultiFileSource(), DarwinInjector::~DarwinInjector(), FramedFilter::~FramedFilter(), InputESSourceRecord::~InputESSourceRecord(), MatroskaFileParser::~MatroskaFileParser(), MatroskaFileServerDemux::~MatroskaFileServerDemux(), MPEG1or2Demux::~MPEG1or2Demux(), MPEG1or2FileServerDemux::~MPEG1or2FileServerDemux(), MPEG2TransportFileServerMediaSubsession::~MPEG2TransportFileServerMediaSubsession(), MPEG2TransportStreamFromPESSource::~MPEG2TransportStreamFromPESSource(), RTSPServerSupportingHTTPStreaming::RTSPClientSessionSupportingHTTPStreaming::~RTSPClientSessionSupportingHTTPStreaming(), ServerMediaSession::~ServerMediaSession(), ServerMediaSubsession::~ServerMediaSubsession(), StreamClientState::~StreamClientState(), and StreamReplicator::~StreamReplicator().

00052                                                           {
00053   MediaLookupTable::ourMedia(env)->remove(name);
00054 }

void Medium::close ( Medium * medium ) [static, inherited]

Definition at line 56 of file Media.cpp.

References Medium::close(), Medium::envir(), Medium::name(), and NULL.

00056                                  {
00057   if (medium == NULL) return;
00058 
00059   close(medium->envir(), medium->name());
00060 }

UsageEnvironment& Medium::envir ( ) const [inline, inherited]

Definition at line 59 of file Media.hh.

References Medium::fEnviron.

00059 {return fEnviron;}

char const* Medium::name ( ) const [inline, inherited]

Definition at line 61 of file Media.hh.

References Medium::fMediumName.

Referenced by QuickTimeFileSink::addAtom_hdlr2(), Medium::close(), MP3ADUTranscoder::createNew(), MP3FromADUSource::createNew(), ADUFromMP3Source::createNew(), and MP3FileSource::initializeStream().

00061 {return fMediumName;}

Boolean Medium::isSink ( ) const [virtual, inherited]

Reimplemented in MediaSink.

Definition at line 66 of file Media.cpp.

References False.

Referenced by MediaSink::lookupByName().

00066                              {
00067   return False; // default implementation
00068 }

Boolean Medium::isRTCPInstance ( ) const [virtual, inherited]

Reimplemented in RTCPInstance.

Definition at line 70 of file Media.cpp.

References False.

Referenced by RTCPInstance::lookupByName().

00070                                      {
00071   return False; // default implementation
00072 }

Boolean Medium::isRTSPClient ( ) const [virtual, inherited]

Reimplemented in RTSPClient.

Definition at line 74 of file Media.cpp.

References False.

Referenced by RTSPClient::lookupByName().

00074                                    {
00075   return False; // default implementation
00076 }

Boolean Medium::isRTSPServer ( ) const [virtual, inherited]

Reimplemented in RTSPServer.

Definition at line 78 of file Media.cpp.

References False.

Referenced by RTSPServer::lookupByName().

00078                                    {
00079   return False; // default implementation
00080 }

Boolean Medium::isMediaSession ( ) const [virtual, inherited]

Reimplemented in MediaSession.

Definition at line 82 of file Media.cpp.

References False.

Referenced by MediaSession::lookupByName().

00082                                      {
00083   return False; // default implementation
00084 }

Boolean Medium::isServerMediaSession ( ) const [virtual, inherited]

Reimplemented in ServerMediaSession.

Definition at line 86 of file Media.cpp.

References False.

Referenced by ServerMediaSession::lookupByName().

00086                                            {
00087   return False; // default implementation
00088 }

Boolean Medium::isDarwinInjector ( ) const [virtual, inherited]

Reimplemented in DarwinInjector.

Definition at line 90 of file Media.cpp.

References False.

Referenced by DarwinInjector::lookupByName().

00090                                        {
00091   return False; // default implementation
00092 }

TaskToken& Medium::nextTask ( ) [inline, protected, inherited]

friend class MediaLookupTable [friend, inherited]

Definition at line 74 of file Media.hh.

u_int64_t MPEG2TransportStreamFramer::fTSPacketCount [private]

Definition at line 67 of file MPEG2TransportStreamFramer.hh.

Referenced by doStopGettingFrames(), tsPacketCount(), and updateTSPacketDurationEstimate().

double MPEG2TransportStreamFramer::fTSPacketDurationEstimate [private]

Definition at line 68 of file MPEG2TransportStreamFramer.hh.

Referenced by afterGettingFrame1(), and updateTSPacketDurationEstimate().

HashTable* MPEG2TransportStreamFramer::fPIDStatusTable [private]

Definition at line 69 of file MPEG2TransportStreamFramer.hh.

Referenced by clearPIDStatusTable(), updateTSPacketDurationEstimate(), and ~MPEG2TransportStreamFramer().

u_int64_t MPEG2TransportStreamFramer::fTSPCRCount [private]

Definition at line 70 of file MPEG2TransportStreamFramer.hh.

Referenced by doStopGettingFrames(), and updateTSPacketDurationEstimate().

Boolean MPEG2TransportStreamFramer::fLimitNumTSPacketsToStream [private]

Definition at line 71 of file MPEG2TransportStreamFramer.hh.

Referenced by doGetNextFrame(), and setNumTSPacketsToStream().

unsigned long MPEG2TransportStreamFramer::fNumTSPacketsToStream [private]

Definition at line 72 of file MPEG2TransportStreamFramer.hh.

Referenced by afterGettingFrame1(), doGetNextFrame(), and setNumTSPacketsToStream().

FramedSource* FramedFilter::fInputSource [protected, inherited]

Definition at line 47 of file FramedFilter.hh.

unsigned char* FramedSource::fTo [protected, inherited]

Definition at line 74 of file FramedSource.hh.

unsigned FramedSource::fMaxSize [protected, inherited]

Definition at line 75 of file FramedSource.hh.

unsigned FramedSource::fFrameSize [protected, inherited]

Definition at line 76 of file FramedSource.hh.

Referenced by FramedSource::afterGetting(), StreamReplicator::afterGettingFrame(), ByteStreamMultiFileSource::afterGettingFrame(), EndianSwap16::afterGettingFrame1(), HostFromNetworkOrder16::afterGettingFrame1(), NetworkFromHostOrder16::afterGettingFrame1(), PCMFromuLawAudioSource::afterGettingFrame1(), uLawFromPCMAudioSource::afterGettingFrame1(), afterGettingFrame1(), MPEG1or2DemuxedElementaryStream::afterGettingFrame1(), MP3ADUTranscoder::afterGettingFrame1(), H264VideoStreamDiscreteFramer::afterGettingFrame1(), MPEG2TransportStreamTrickModeFilter::attemptDeliveryToClient(), MPEGVideoStreamFramer::continueReadProcessing(), MPEG1or2AudioStreamFramer::continueReadProcessing(), H263plusVideoStreamFramer::continueReadProcessing(), StreamReplica::copyReceivedFrame(), MPEG2TransportStreamMultiplexor::deliverDataToClient(), T140IdleFilter::deliverEmptyFrame(), DeviceSource::deliverFrame(), T140IdleFilter::deliverFromBuffer(), MPEG2IFrameIndexFromTransportStream::deliverIndexRecord(), WAVAudioFileSource::doGetNextFrame(), QCELPDeinterleaver::doGetNextFrame(), MultiFramedRTPSource::doGetNextFrame(), MPEG2TransportStreamTrickModeFilter::doGetNextFrame(), doGetNextFrame(), H264FUAFragmenter::doGetNextFrame(), DVVideoStreamFramer::doGetNextFrame(), ByteStreamMemoryBufferSource::doGetNextFrame(), AMRDeinterleaver::doGetNextFrame(), AMRAudioFileSource::doGetNextFrame(), ADTSAudioFileSource::doGetNextFrame(), MultiFramedRTPSource::doGetNextFrame1(), MP3FileSource::doGetNextFrame1(), ADUFromMP3Source::doGetNextFrame1(), ByteStreamFileSource::doReadFromFile(), MatroskaDemuxedTrack::frameSize(), MP3FromADUSource::generateFrameFromHeadADU(), DVVideoStreamFramer::getAndDeliverData(), BasicUDPSource::incomingPacketHandler1(), AC3AudioStreamFramer::parseNextFrame(), MP3ADUdeinterleaver::releaseOutgoingFrame(), and MP3ADUinterleaver::releaseOutgoingFrame().

unsigned FramedSource::fNumTruncatedBytes [protected, inherited]

Definition at line 77 of file FramedSource.hh.

struct timeval FramedSource::fPresentationTime [read, protected, inherited]

Definition at line 78 of file FramedSource.hh.

unsigned FramedSource::fDurationInMicroseconds [protected, inherited]

Definition at line 79 of file FramedSource.hh.


Public Types
typedef void(	afterGettingFunc )(void *clientData, unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime, unsigned durationInMicroseconds)
typedef void(	onCloseFunc )(void *clientData)
Public Member Functions
u_int64_t	tsPacketCount () const
void	changeInputSource (FramedSource *newInputSource)
void	clearPIDStatusTable ()
void	setNumTSPacketsToStream (unsigned long numTSRecordsToStream)
FramedSource *	inputSource () const
void	detachInputSource ()
void	getNextFrame (unsigned char to, unsigned maxSize, afterGettingFunc afterGettingFunc, void afterGettingClientData, onCloseFunc onCloseFunc, void *onCloseClientData)
void	stopGettingFrames ()
virtual unsigned	maxFrameSize () const
Boolean	isCurrentlyAwaitingData () const
virtual Boolean	isRTPSource () const
virtual Boolean	isMPEG1or2VideoStreamFramer () const
virtual Boolean	isMPEG4VideoStreamFramer () const
virtual Boolean	isH264VideoStreamFramer () const
virtual Boolean	isDVVideoStreamFramer () const
virtual Boolean	isJPEGVideoSource () const
virtual Boolean	isAMRAudioSource () const
UsageEnvironment &	envir () const
char const *	name () const
virtual Boolean	isSink () const
virtual Boolean	isRTCPInstance () const
virtual Boolean	isRTSPClient () const
virtual Boolean	isRTSPServer () const
virtual Boolean	isMediaSession () const
virtual Boolean	isServerMediaSession () const
virtual Boolean	isDarwinInjector () const
Static Public Member Functions
static MPEG2TransportStreamFramer *	createNew (UsageEnvironment &env, FramedSource *inputSource)
static Boolean	lookupByName (UsageEnvironment &env, char const sourceName, FramedSource &resultSource)
static Boolean	lookupByName (UsageEnvironment &env, char const sourceName, MediaSource &resultSource)
static Boolean	lookupByName (UsageEnvironment &env, char const mediumName, Medium &resultMedium)
static void	handleClosure (void *clientData)
static void	afterGetting (FramedSource *source)
static void	close (UsageEnvironment &env, char const *mediumName)
static void	close (Medium *medium)
Protected Member Functions
	MPEG2TransportStreamFramer (UsageEnvironment &env, FramedSource *inputSource)
virtual	~MPEG2TransportStreamFramer ()
virtual char const *	MIMEtype () const
virtual void	getAttributes () const
TaskToken &	nextTask ()
Protected Attributes
FramedSource *	fInputSource
unsigned char *	fTo
unsigned	fMaxSize
unsigned	fFrameSize
unsigned	fNumTruncatedBytes
timeval	fPresentationTime
unsigned	fDurationInMicroseconds
Private Member Functions
virtual void	doGetNextFrame ()
virtual void	doStopGettingFrames ()
void	afterGettingFrame1 (unsigned frameSize, struct timeval presentationTime)
void	updateTSPacketDurationEstimate (unsigned char *pkt, double timeNow)
Static Private Member Functions
static void	afterGettingFrame (void *clientData, unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime, unsigned durationInMicroseconds)
Private Attributes
u_int64_t	fTSPacketCount
double	fTSPacketDurationEstimate
HashTable *	fPIDStatusTable
u_int64_t	fTSPCRCount
Boolean	fLimitNumTSPacketsToStream
unsigned long	fNumTSPacketsToStream
Friends
class	MediaLookupTable

MPEG2TransportStreamFramer Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Field Documentation