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     fLimitTSPacketsToStreamByPCR(False), fPCRLimit(0.0) {
00079   fPIDStatusTable = HashTable::create(ONE_WORD_HASH_KEYS);
00080 }

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

Definition at line 82 of file MPEG2TransportStreamFramer.cpp.

References clearPIDStatusTable(), and fPIDStatusTable.

00082                                                         {
00083   clearPIDStatusTable();
00084   delete fPIDStatusTable;
00085 }

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 87 of file MPEG2TransportStreamFramer.cpp.

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

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

00087                                                      {
00088   PIDStatus* pidStatus;
00089   while ((pidStatus = (PIDStatus*)fPIDStatusTable->RemoveNext()) != NULL) {
00090     delete pidStatus;
00091   }
00092 }

void MPEG2TransportStreamFramer::setNumTSPacketsToStream ( unsigned long numTSRecordsToStream )

Definition at line 94 of file MPEG2TransportStreamFramer.cpp.

References fLimitNumTSPacketsToStream, and fNumTSPacketsToStream.

Referenced by ClientTrickPlayState::updateStateFromNPT().

00094                                                                                            {
00095   fNumTSPacketsToStream = numTSRecordsToStream;
00096   fLimitNumTSPacketsToStream = numTSRecordsToStream > 0;
00097 }

void MPEG2TransportStreamFramer::setPCRLimit ( float pcrLimit )

Definition at line 99 of file MPEG2TransportStreamFramer.cpp.

References fLimitTSPacketsToStreamByPCR, and fPCRLimit.

Referenced by ClientTrickPlayState::updateStateFromNPT().

00099                                                            {
00100   fPCRLimit = pcrLimit;
00101   fLimitTSPacketsToStreamByPCR = pcrLimit != 0.0;
00102 }

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

Implements FramedSource.

Definition at line 104 of file MPEG2TransportStreamFramer.cpp.

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

00104                                                 {
00105   if (fLimitNumTSPacketsToStream) {
00106     if (fNumTSPacketsToStream == 0) {
00107       handleClosure(this);
00108       return;
00109     }
00110     if (fNumTSPacketsToStream*TRANSPORT_PACKET_SIZE < fMaxSize) {
00111       fMaxSize = fNumTSPacketsToStream*TRANSPORT_PACKET_SIZE;
00112     }
00113   }
00114 
00115   // Read directly from our input source into our client's buffer:
00116   fFrameSize = 0;
00117   fInputSource->getNextFrame(fTo, fMaxSize,
00118                              afterGettingFrame, this,
00119                              FramedSource::handleClosure, this);
00120 }

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

Reimplemented from FramedFilter.

Definition at line 122 of file MPEG2TransportStreamFramer.cpp.

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

00122                                                      {
00123   FramedFilter::doStopGettingFrames();
00124   fTSPacketCount = 0;
00125   fTSPCRCount = 0;
00126 
00127   clearPIDStatusTable();
00128 }

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

Definition at line 131 of file MPEG2TransportStreamFramer.cpp.

References afterGettingFrame1().

Referenced by afterGettingFrame1(), and doGetNextFrame().

00134                                                          {
00135   MPEG2TransportStreamFramer* framer = (MPEG2TransportStreamFramer*)clientData;
00136   framer->afterGettingFrame1(frameSize, presentationTime);
00137 }

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

Definition at line 141 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().

00142                                                                                      {
00143   fFrameSize += frameSize;
00144   unsigned const numTSPackets = fFrameSize/TRANSPORT_PACKET_SIZE;
00145   fNumTSPacketsToStream -= numTSPackets;
00146   fFrameSize = numTSPackets*TRANSPORT_PACKET_SIZE; // an integral # of TS packets
00147   if (fFrameSize == 0) {
00148     // We didn't read a complete TS packet; assume that the input source has closed.
00149     handleClosure(this);
00150     return;
00151   }
00152 
00153   // Make sure the data begins with a sync byte:
00154   unsigned syncBytePosition;
00155   for (syncBytePosition = 0; syncBytePosition < fFrameSize; ++syncBytePosition) {
00156     if (fTo[syncBytePosition] == TRANSPORT_SYNC_BYTE) break;
00157   }
00158   if (syncBytePosition == fFrameSize) {
00159     envir() << "No Transport Stream sync byte in data.";
00160     handleClosure(this);
00161     return;
00162   } else if (syncBytePosition > 0) {
00163     // There's a sync byte, but not at the start of the data.  Move the good data
00164     // to the start of the buffer, then read more to fill it up again:
00165     memmove(fTo, &fTo[syncBytePosition], fFrameSize - syncBytePosition);
00166     fFrameSize -= syncBytePosition;
00167     fInputSource->getNextFrame(&fTo[fFrameSize], syncBytePosition,
00168                                afterGettingFrame, this,
00169                                FramedSource::handleClosure, this);
00170     return;
00171   } // else normal case: the data begins with a sync byte
00172 
00173   fPresentationTime = presentationTime;
00174 
00175   // Scan through the TS packets that we read, and update our estimate of
00176   // the duration of each packet:
00177   struct timeval tvNow;
00178   gettimeofday(&tvNow, NULL);
00179   double timeNow = tvNow.tv_sec + tvNow.tv_usec/1000000.0;
00180   for (unsigned i = 0; i < numTSPackets; ++i) {
00181     if (!updateTSPacketDurationEstimate(&fTo[i*TRANSPORT_PACKET_SIZE], timeNow)) {
00182       // We hit a preset limit (based on PCR) within the stream.  Handle this as if the input source has closed:
00183       handleClosure(this);
00184       return;
00185     }
00186   }
00187 
00188   fDurationInMicroseconds
00189     = numTSPackets * (unsigned)(fTSPacketDurationEstimate*1000000);
00190 
00191   // Complete the delivery to our client:
00192   afterGetting(this);
00193 }

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

Definition at line 195 of file MPEG2TransportStreamFramer.cpp.

References HashTable::Add(), Medium::envir(), False, PIDStatus::firstClock, PIDStatus::firstRealTime, fLimitTSPacketsToStreamByPCR, fPCRLimit, 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, True, and tsPacketCount().

Referenced by afterGettingFrame1().

00195                                                                                                      {
00196   // Sanity check: Make sure we start with the sync byte:
00197   if (pkt[0] != TRANSPORT_SYNC_BYTE) {
00198     envir() << "Missing sync byte!\n";
00199     return True;
00200   }
00201 
00202   ++fTSPacketCount;
00203 
00204   // If this packet doesn't contain a PCR, then we're not interested in it:
00205   u_int8_t const adaptation_field_control = (pkt[3]&0x30)>>4;
00206   if (adaptation_field_control != 2 && adaptation_field_control != 3) return True;
00207       // there's no adaptation_field
00208 
00209   u_int8_t const adaptation_field_length = pkt[4];
00210   if (adaptation_field_length == 0) return True;
00211 
00212   u_int8_t const discontinuity_indicator = pkt[5]&0x80;
00213   u_int8_t const pcrFlag = pkt[5]&0x10;
00214   if (pcrFlag == 0) return True; // no PCR
00215 
00216   // There's a PCR.  Get it, and the PID:
00217   ++fTSPCRCount;
00218   u_int32_t pcrBaseHigh = (pkt[6]<<24)|(pkt[7]<<16)|(pkt[8]<<8)|pkt[9];
00219   double clock = pcrBaseHigh/45000.0;
00220   if ((pkt[10]&0x80) != 0) clock += 1/90000.0; // add in low-bit (if set)
00221   unsigned short pcrExt = ((pkt[10]&0x01)<<8) | pkt[11];
00222   clock += pcrExt/27000000.0;
00223   if (fLimitTSPacketsToStreamByPCR) {
00224     if (clock > fPCRLimit) {
00225       // We've hit a preset limit within the stream:
00226       return False;
00227     }
00228   }
00229 
00230   unsigned pid = ((pkt[1]&0x1F)<<8) | pkt[2];
00231 
00232   // Check whether we already have a record of a PCR for this PID:
00233   PIDStatus* pidStatus = (PIDStatus*)(fPIDStatusTable->Lookup((char*)pid));
00234 
00235   if (pidStatus == NULL) {
00236     // We're seeing this PID's PCR for the first time:
00237     pidStatus = new PIDStatus(clock, timeNow);
00238     fPIDStatusTable->Add((char*)pid, pidStatus);
00239 #ifdef DEBUG_PCR
00240     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);
00241 #endif
00242   } else {
00243     // We've seen this PID's PCR before; update our per-packet duration estimate:
00244     int64_t packetsSinceLast = (int64_t)(fTSPacketCount - pidStatus->lastPacketNum);
00245       // it's "int64_t" because some compilers can't convert "u_int64_t" -> "double"
00246     double durationPerPacket = (clock - pidStatus->lastClock)/packetsSinceLast;
00247 
00248     // Hack (suggested by "Romain"): Don't update our estimate if this PCR appeared unusually quickly.
00249     // (This can produce more accurate estimates for wildly VBR streams.)
00250     double meanPCRPeriod = 0.0;
00251     if (fTSPCRCount > 0) {
00252       double tsPacketCount = (double)(int64_t)fTSPacketCount;
00253       double tsPCRCount = (double)(int64_t)fTSPCRCount;
00254       meanPCRPeriod = tsPacketCount/tsPCRCount;
00255       if (packetsSinceLast < meanPCRPeriod*PCR_PERIOD_VARIATION_RATIO) return True;
00256     }
00257 
00258     if (fTSPacketDurationEstimate == 0.0) { // we've just started
00259       fTSPacketDurationEstimate = durationPerPacket;
00260     } else if (discontinuity_indicator == 0 && durationPerPacket >= 0.0) {
00261       fTSPacketDurationEstimate
00262         = durationPerPacket*NEW_DURATION_WEIGHT
00263         + fTSPacketDurationEstimate*(1-NEW_DURATION_WEIGHT);
00264 
00265       // Also adjust the duration estimate to try to ensure that the transmission
00266       // rate matches the playout rate:
00267       double transmitDuration = timeNow - pidStatus->firstRealTime;
00268       double playoutDuration = clock - pidStatus->firstClock;
00269       if (transmitDuration > playoutDuration) {
00270         fTSPacketDurationEstimate *= TIME_ADJUSTMENT_FACTOR; // reduce estimate
00271       } else if (transmitDuration + MAX_PLAYOUT_BUFFER_DURATION < playoutDuration) {
00272         fTSPacketDurationEstimate /= TIME_ADJUSTMENT_FACTOR; // increase estimate
00273       }
00274     } else {
00275       // the PCR has a discontinuity from its previous value; don't use it now,
00276       // but reset our PCR and real-time values to compensate:
00277       pidStatus->firstClock = clock;
00278       pidStatus->firstRealTime = timeNow;
00279     }
00280 #ifdef DEBUG_PCR
00281     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 );
00282 #endif
00283   }
00284 
00285   pidStatus->lastClock = clock;
00286   pidStatus->lastRealTime = timeNow;
00287   pidStatus->lastPacketNum = fTSPacketCount;
00288 
00289   return True;
00290 }

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

Definition at line 30 of file FramedFilter.hh.

References FramedFilter::fInputSource.

00030 { return fInputSource; }

void FramedFilter::reassignInputSource ( FramedSource * newInputSource ) [inline, inherited]

Definition at line 32 of file FramedFilter.hh.

References FramedFilter::fInputSource.

Referenced by T140TextRTPSink::continuePlaying(), H264VideoRTPSink::continuePlaying(), and FramedFilter::detachInputSource().

00032 { fInputSource = newInputSource; }

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

Definition at line 35 of file FramedFilter.hh.

References NULL, and FramedFilter::reassignInputSource().

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

00035 { reassignInputSource(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 FileSink::afterGettingFrame(), 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]

Definition at line 60 of file FramedSource.hh.

References FramedSource::fIsCurrentlyAwaitingData.

Referenced by T140IdleFilter::afterGettingFrame(), afterPlaying(), InputESSourceRecord::askForNewData(), MPEG2TransportStreamFromESSource::awaitNewBuffer(), MatroskaFileParser::continueParsing(), QuickTimeFileSink::continuePlaying(), AVIFileSink::continuePlaying(), StreamReplicator::deactivateStreamReplica(), DeviceSource::deliverFrame(), MatroskaFileParser::deliverFrameWithinBlock(), T140IdleFilter::doGetNextFrame(), QCELPDeinterleaver::doGetNextFrame(), AMRDeinterleaver::doGetNextFrame(), WAVAudioFileSource::fileReadableHandler(), ByteStreamFileSource::fileReadableHandler(), StreamReplicator::getNextFrame(), BasicUDPSource::incomingPacketHandler1(), and TCPStreamSink::processBuffer().

00060 {return fIsCurrentlyAwaitingData;}

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().

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]

Definition at line 78 of file Media.hh.

References Medium::fNextTask.

Referenced by BasicUDPSink::afterGettingFrame1(), MPEG4VideoFileServerMediaSubsession::afterPlayingDummy1(), H264VideoFileServerMediaSubsession::afterPlayingDummy1(), MPEG4VideoFileServerMediaSubsession::checkForAuxSDPLine1(), H264VideoFileServerMediaSubsession::checkForAuxSDPLine1(), MP3FileSource::doGetNextFrame(), AMRAudioFileSource::doGetNextFrame(), ADTSAudioFileSource::doGetNextFrame(), MultiFramedRTPSource::doGetNextFrame1(), WAVAudioFileSource::doReadFromFile(), ByteStreamFileSource::doReadFromFile(), MultiFramedRTPSource::doStopGettingFrames(), FramedSource::doStopGettingFrames(), ByteStreamFileSource::doStopGettingFrames(), RTCPInstance::reschedule(), RTCPInstance::schedule(), MultiFramedRTPSink::sendPacketIfNecessary(), and MediaSink::stopPlaying().

00078                         {
00079         return fNextTask;
00080   }

friend class MediaLookupTable [friend, inherited]

Definition at line 74 of file Media.hh.

u_int64_t MPEG2TransportStreamFramer::fTSPacketCount [private]

Definition at line 68 of file MPEG2TransportStreamFramer.hh.

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

double MPEG2TransportStreamFramer::fTSPacketDurationEstimate [private]

Definition at line 69 of file MPEG2TransportStreamFramer.hh.

Referenced by afterGettingFrame1(), and updateTSPacketDurationEstimate().

HashTable* MPEG2TransportStreamFramer::fPIDStatusTable [private]

Definition at line 70 of file MPEG2TransportStreamFramer.hh.

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

u_int64_t MPEG2TransportStreamFramer::fTSPCRCount [private]

Definition at line 71 of file MPEG2TransportStreamFramer.hh.

Referenced by doStopGettingFrames(), and updateTSPacketDurationEstimate().

Boolean MPEG2TransportStreamFramer::fLimitNumTSPacketsToStream [private]

Definition at line 72 of file MPEG2TransportStreamFramer.hh.

Referenced by doGetNextFrame(), and setNumTSPacketsToStream().

unsigned long MPEG2TransportStreamFramer::fNumTSPacketsToStream [private]

Definition at line 73 of file MPEG2TransportStreamFramer.hh.

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

Boolean MPEG2TransportStreamFramer::fLimitTSPacketsToStreamByPCR [private]

Definition at line 74 of file MPEG2TransportStreamFramer.hh.

Referenced by setPCRLimit(), and updateTSPacketDurationEstimate().

float MPEG2TransportStreamFramer::fPCRLimit [private]

Definition at line 75 of file MPEG2TransportStreamFramer.hh.

Referenced by setPCRLimit(), and updateTSPacketDurationEstimate().

FramedSource* FramedFilter::fInputSource [protected, inherited]

Definition at line 49 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(), PresentationTimeSubsessionNormalizer::afterGettingFrame(), ByteStreamMultiFileSource::afterGettingFrame(), EndianSwap24::afterGettingFrame1(), 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(), WAVAudioFileSource::doReadFromFile(), 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)
void	setPCRLimit (float pcrLimit)
FramedSource *	inputSource () const
void	reassignInputSource (FramedSource *newInputSource)
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)
Boolean	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
Boolean	fLimitTSPacketsToStreamByPCR
float	fPCRLimit
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