OnDemandServerMediaSubsession Class Reference

#include <OnDemandServerMediaSubsession.hh>

Inheritance diagram for OnDemandServerMediaSubsession:

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Collaboration diagram for OnDemandServerMediaSubsession:

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Public Member Functions

unsigned trackNumber () const
char const * trackId ()
virtual void testScaleFactor (float &scale)
virtual float duration () const
void setServerAddressAndPortForSDP (netAddressBits addressBits, portNumBits portBits)
UsageEnvironment & envir () const
char const * name () const
virtual Boolean isSource () 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 Boolean lookupByName (UsageEnvironment &env, char const *mediumName, Medium *&resultMedium)
static void close (UsageEnvironment &env, char const *mediumName)
static void close (Medium *medium)

Protected Member Functions

 OnDemandServerMediaSubsession (UsageEnvironment &env, Boolean reuseFirstSource, portNumBits initialPortNum=6970)
virtual ~OnDemandServerMediaSubsession ()
virtual char const * sdpLines ()
virtual void getStreamParameters (unsigned clientSessionId, netAddressBits clientAddress, Port const &clientRTPPort, Port const &clientRTCPPort, int tcpSocketNum, unsigned char rtpChannelId, unsigned char rtcpChannelId, netAddressBits &destinationAddress, u_int8_t &destinationTTL, Boolean &isMulticast, Port &serverRTPPort, Port &serverRTCPPort, void *&streamToken)
virtual void startStream (unsigned clientSessionId, void *streamToken, TaskFunc *rtcpRRHandler, void *rtcpRRHandlerClientData, unsigned short &rtpSeqNum, unsigned &rtpTimestamp, ServerRequestAlternativeByteHandler *serverRequestAlternativeByteHandler, void *serverRequestAlternativeByteHandlerClientData)
virtual void pauseStream (unsigned clientSessionId, void *streamToken)
virtual void seekStream (unsigned clientSessionId, void *streamToken, double &seekNPT, double streamDuration, u_int64_t &numBytes)
virtual void setStreamScale (unsigned clientSessionId, void *streamToken, float scale)
virtual FramedSource * getStreamSource (void *streamToken)
virtual void deleteStream (unsigned clientSessionId, void *&streamToken)
virtual char const * getAuxSDPLine (RTPSink *rtpSink, FramedSource *inputSource)
virtual void seekStreamSource (FramedSource *inputSource, double &seekNPT, double streamDuration, u_int64_t &numBytes)
virtual void setStreamSourceScale (FramedSource *inputSource, float scale)
virtual void closeStreamSource (FramedSource *inputSource)
virtual FramedSource * createNewStreamSource (unsigned clientSessionId, unsigned &estBitrate)=0
virtual RTPSink * createNewRTPSink (Groupsock *rtpGroupsock, unsigned char rtpPayloadTypeIfDynamic, FramedSource *inputSource)=0
char const * rangeSDPLine () const
TaskToken & nextTask ()

Protected Attributes

char * fSDPLines
ServerMediaSession * fParentSession
netAddressBits fServerAddressForSDP
portNumBits fPortNumForSDP

Private Member Functions

void setSDPLinesFromRTPSink (RTPSink *rtpSink, FramedSource *inputSource, unsigned estBitrate)

Private Attributes

Boolean fReuseFirstSource
portNumBits fInitialPortNum
HashTable * fDestinationsHashTable
void * fLastStreamToken
char fCNAME [100]

Friends

class StreamState
class MediaLookupTable

Detailed Description

Definition at line 38 of file OnDemandServerMediaSubsession.hh.

Constructor & Destructor Documentation

OnDemandServerMediaSubsession::OnDemandServerMediaSubsession ( UsageEnvironment &  env,
Boolean  reuseFirstSource,
portNumBits  initialPortNum = 6970 
) [protected]

Definition at line 26 of file OnDemandServerMediaSubsession.cpp.

References HashTable::create(), and ONE_WORD_HASH_KEYS.

00029   : ServerMediaSubsession(env),
00030     fSDPLines(NULL), fReuseFirstSource(reuseFirstSource), fInitialPortNum(initialPortNum), fLastStreamToken(NULL) {
00031   fDestinationsHashTable = HashTable::create(ONE_WORD_HASH_KEYS);
00032   gethostname(fCNAME, sizeof fCNAME);
00033   fCNAME[sizeof fCNAME-1] = '\0'; // just in case
00034 }

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

Definition at line 36 of file OnDemandServerMediaSubsession.cpp.

References fDestinationsHashTable, fSDPLines, NULL, and HashTable::RemoveNext().

00036                                                               {
00037   delete[] fSDPLines;
00038 
00039   // Clean out the destinations hash table:
00040   while (1) {
00041     Destinations* destinations
00042       = (Destinations*)(fDestinationsHashTable->RemoveNext());
00043     if (destinations == NULL) break;
00044     delete destinations;
00045   }
00046   delete fDestinationsHashTable;
00047 }

Member Function Documentation

char const * OnDemandServerMediaSubsession::sdpLines (  )  [protected, virtual]

Implements ServerMediaSubsession.

Definition at line 50 of file OnDemandServerMediaSubsession.cpp.

References Medium::close(), closeStreamSource(), createNewRTPSink(), createNewStreamSource(), Medium::envir(), fSDPLines, NULL, setSDPLinesFromRTPSink(), and ServerMediaSubsession::trackNumber().

Referenced by setSDPLinesFromRTPSink().

00050                                         {
00051   if (fSDPLines == NULL) {
00052     // We need to construct a set of SDP lines that describe this
00053     // subsession (as a unicast stream).  To do so, we first create
00054     // dummy (unused) source and "RTPSink" objects,
00055     // whose parameters we use for the SDP lines:
00056     unsigned estBitrate;
00057     FramedSource* inputSource = createNewStreamSource(0, estBitrate);
00058     if (inputSource == NULL) return NULL; // file not found
00059 
00060     struct in_addr dummyAddr;
00061     dummyAddr.s_addr = 0;
00062     Groupsock dummyGroupsock(envir(), dummyAddr, 0, 0);
00063     unsigned char rtpPayloadType = 96 + trackNumber()-1; // if dynamic
00064     RTPSink* dummyRTPSink
00065       = createNewRTPSink(&dummyGroupsock, rtpPayloadType, inputSource);
00066 
00067     setSDPLinesFromRTPSink(dummyRTPSink, inputSource, estBitrate);
00068     Medium::close(dummyRTPSink);
00069     closeStreamSource(inputSource);
00070   }
00071 
00072   return fSDPLines;
00073 }

void OnDemandServerMediaSubsession::getStreamParameters ( unsigned  clientSessionId,
netAddressBits  clientAddress,
Port const &  clientRTPPort,
Port const &  clientRTCPPort,
int  tcpSocketNum,
unsigned char  rtpChannelId,
unsigned char  rtcpChannelId,
netAddressBits &  destinationAddress,
u_int8_t &  destinationTTL,
Boolean &  isMulticast,
Port &  serverRTPPort,
Port &  serverRTCPPort,
void *&  streamToken 
) [protected, virtual]

Implements ServerMediaSubsession.

Definition at line 76 of file OnDemandServerMediaSubsession.cpp.

References HashTable::Add(), BasicUDPSink::createNew(), createNewRTPSink(), createNewStreamSource(), Medium::envir(), False, fDestinationsHashTable, fInitialPortNum, fLastStreamToken, fReuseFirstSource, increaseSendBufferTo(), NULL, Port::num(), Groupsock::removeAllDestinations(), Socket::socketNum(), StreamState, and ServerMediaSubsession::trackNumber().

00088                                           {
00089   if (destinationAddress == 0) destinationAddress = clientAddress;
00090   struct in_addr destinationAddr; destinationAddr.s_addr = destinationAddress;
00091   isMulticast = False;
00092 
00093   if (fLastStreamToken != NULL && fReuseFirstSource) {
00094     // Special case: Rather than creating a new 'StreamState',
00095     // we reuse the one that we've already created:
00096     serverRTPPort = ((StreamState*)fLastStreamToken)->serverRTPPort();
00097     serverRTCPPort = ((StreamState*)fLastStreamToken)->serverRTCPPort();
00098     ++((StreamState*)fLastStreamToken)->referenceCount();
00099     streamToken = fLastStreamToken;
00100   } else {
00101     // Normal case: Create a new media source:
00102     unsigned streamBitrate;
00103     FramedSource* mediaSource
00104       = createNewStreamSource(clientSessionId, streamBitrate);
00105 
00106     // Create 'groupsock' and 'sink' objects for the destination,
00107     // using previously unused server port numbers:
00108     RTPSink* rtpSink;
00109     BasicUDPSink* udpSink;
00110     Groupsock* rtpGroupsock;
00111     Groupsock* rtcpGroupsock;
00112     portNumBits serverPortNum;
00113     if (clientRTCPPort.num() == 0) {
00114       // We're streaming raw UDP (not RTP). Create a single groupsock:
00115       NoReuse dummy(envir()); // ensures that we skip over ports that are already in use
00116       for (serverPortNum = fInitialPortNum; ; ++serverPortNum) {
00117         struct in_addr dummyAddr; dummyAddr.s_addr = 0;
00118 
00119         serverRTPPort = serverPortNum;
00120         rtpGroupsock = new Groupsock(envir(), dummyAddr, serverRTPPort, 255);
00121         if (rtpGroupsock->socketNum() >= 0) break; // success
00122       }
00123 
00124       rtcpGroupsock = NULL;
00125       rtpSink = NULL;
00126       udpSink = BasicUDPSink::createNew(envir(), rtpGroupsock);
00127     } else {
00128       // Normal case: We're streaming RTP (over UDP or TCP).  Create a pair of
00129       // groupsocks (RTP and RTCP), with adjacent port numbers (RTP port number even):
00130       NoReuse dummy(envir()); // ensures that we skip over ports that are already in use
00131       for (portNumBits serverPortNum = fInitialPortNum; ; serverPortNum += 2) {
00132         struct in_addr dummyAddr; dummyAddr.s_addr = 0;
00133 
00134         serverRTPPort = serverPortNum;
00135         rtpGroupsock = new Groupsock(envir(), dummyAddr, serverRTPPort, 255);
00136         if (rtpGroupsock->socketNum() < 0) {
00137           delete rtpGroupsock;
00138           continue; // try again
00139         }
00140 
00141         serverRTCPPort = serverPortNum+1;
00142         rtcpGroupsock = new Groupsock(envir(), dummyAddr, serverRTCPPort, 255);
00143         if (rtcpGroupsock->socketNum() < 0) {
00144           delete rtpGroupsock;
00145           delete rtcpGroupsock;
00146           continue; // try again
00147         }
00148 
00149         break; // success
00150       }
00151 
00152       unsigned char rtpPayloadType = 96 + trackNumber()-1; // if dynamic
00153       rtpSink = createNewRTPSink(rtpGroupsock, rtpPayloadType, mediaSource);
00154       udpSink = NULL;
00155     }
00156 
00157     // Turn off the destinations for each groupsock.  They'll get set later
00158     // (unless TCP is used instead):
00159     if (rtpGroupsock != NULL) rtpGroupsock->removeAllDestinations();
00160     if (rtcpGroupsock != NULL) rtcpGroupsock->removeAllDestinations();
00161 
00162     if (rtpGroupsock != NULL) {
00163       // Try to use a big send buffer for RTP -  at least 0.1 second of
00164       // specified bandwidth and at least 50 KB
00165       unsigned rtpBufSize = streamBitrate * 25 / 2; // 1 kbps * 0.1 s = 12.5 bytes
00166       if (rtpBufSize < 50 * 1024) rtpBufSize = 50 * 1024;
00167       increaseSendBufferTo(envir(), rtpGroupsock->socketNum(), rtpBufSize);
00168     }
00169 
00170     // Set up the state of the stream.  The stream will get started later:
00171     streamToken = fLastStreamToken
00172       = new StreamState(*this, serverRTPPort, serverRTCPPort, rtpSink, udpSink,
00173                         streamBitrate, mediaSource,
00174                         rtpGroupsock, rtcpGroupsock);
00175   }
00176 
00177   // Record these destinations as being for this client session id:
00178   Destinations* destinations;
00179   if (tcpSocketNum < 0) { // UDP
00180     destinations = new Destinations(destinationAddr, clientRTPPort, clientRTCPPort);
00181   } else { // TCP
00182     destinations = new Destinations(tcpSocketNum, rtpChannelId, rtcpChannelId);
00183   }
00184   fDestinationsHashTable->Add((char const*)clientSessionId, destinations);
00185 }

void OnDemandServerMediaSubsession::startStream ( unsigned  clientSessionId,
void *  streamToken,
TaskFunc *  rtcpRRHandler,
void *  rtcpRRHandlerClientData,
unsigned short &  rtpSeqNum,
unsigned &  rtpTimestamp,
ServerRequestAlternativeByteHandler *  serverRequestAlternativeByteHandler,
void *  serverRequestAlternativeByteHandlerClientData 
) [protected, virtual]

Implements ServerMediaSubsession.

Reimplemented in MPEG2TransportFileServerMediaSubsession.

Definition at line 187 of file OnDemandServerMediaSubsession.cpp.

References RTPSink::currentSeqNo(), fDestinationsHashTable, HashTable::Lookup(), NULL, RTPSink::presetNextTimestamp(), StreamState::rtpSink(), and StreamState::startPlaying().

Referenced by MPEG2TransportFileServerMediaSubsession::startStream().

00194                                                                                                      {
00195   StreamState* streamState = (StreamState*)streamToken;
00196   Destinations* destinations
00197     = (Destinations*)(fDestinationsHashTable->Lookup((char const*)clientSessionId));
00198   if (streamState != NULL) {
00199     streamState->startPlaying(destinations,
00200                               rtcpRRHandler, rtcpRRHandlerClientData,
00201                               serverRequestAlternativeByteHandler, serverRequestAlternativeByteHandlerClientData);
00202     if (streamState->rtpSink() != NULL) {
00203       rtpSeqNum = streamState->rtpSink()->currentSeqNo();
00204       rtpTimestamp = streamState->rtpSink()->presetNextTimestamp();
00205     }
00206   }
00207 }

void OnDemandServerMediaSubsession::pauseStream ( unsigned  clientSessionId,
void *  streamToken 
) [protected, virtual]

Reimplemented from ServerMediaSubsession.

Reimplemented in MPEG2TransportFileServerMediaSubsession.

Definition at line 209 of file OnDemandServerMediaSubsession.cpp.

References fReuseFirstSource, NULL, and StreamState::pause().

Referenced by MPEG2TransportFileServerMediaSubsession::pauseStream(), and MPEG2TransportFileServerMediaSubsession::startStream().

00210                                                                    {
00211   // Pausing isn't allowed if multiple clients are receiving data from
00212   // the same source:
00213   if (fReuseFirstSource) return;
00214 
00215   StreamState* streamState = (StreamState*)streamToken;
00216   if (streamState != NULL) streamState->pause();
00217 }

void OnDemandServerMediaSubsession::seekStream ( unsigned  clientSessionId,
void *  streamToken,
double &  seekNPT,
double  streamDuration,
u_int64_t &  numBytes 
) [protected, virtual]

Reimplemented from ServerMediaSubsession.

Reimplemented in MPEG2TransportFileServerMediaSubsession.

Definition at line 219 of file OnDemandServerMediaSubsession.cpp.

References fReuseFirstSource, StreamState::mediaSource(), NULL, and seekStreamSource().

Referenced by MPEG2TransportFileServerMediaSubsession::seekStream().

00220                                                                                                                                {
00221   numBytes = 0; // by default: unknown
00222 
00223   // Seeking isn't allowed if multiple clients are receiving data from
00224   // the same source:
00225   if (fReuseFirstSource) return;
00226 
00227   StreamState* streamState = (StreamState*)streamToken;
00228   if (streamState != NULL && streamState->mediaSource() != NULL) {
00229     seekStreamSource(streamState->mediaSource(), seekNPT, streamDuration, numBytes);
00230   }
00231 }

void OnDemandServerMediaSubsession::setStreamScale ( unsigned  clientSessionId,
void *  streamToken,
float  scale 
) [protected, virtual]

Reimplemented from ServerMediaSubsession.

Reimplemented in MPEG2TransportFileServerMediaSubsession.

Definition at line 233 of file OnDemandServerMediaSubsession.cpp.

References fReuseFirstSource, StreamState::mediaSource(), NULL, and setStreamSourceScale().

Referenced by MPEG2TransportFileServerMediaSubsession::setStreamScale().

00234                                                                                    {
00235   // Changing the scale factor isn't allowed if multiple clients are receiving data
00236   // from the same source:
00237   if (fReuseFirstSource) return;
00238 
00239   StreamState* streamState = (StreamState*)streamToken;
00240   if (streamState != NULL && streamState->mediaSource() != NULL) {
00241     setStreamSourceScale(streamState->mediaSource(), scale);
00242   }
00243 }

FramedSource * OnDemandServerMediaSubsession::getStreamSource ( void *  streamToken  )  [protected, virtual]

Reimplemented from ServerMediaSubsession.

Definition at line 245 of file OnDemandServerMediaSubsession.cpp.

References StreamState::mediaSource(), and NULL.

00245                                                                               {
00246   if (streamToken == NULL) return NULL;
00247 
00248   StreamState* streamState = (StreamState*)streamToken;
00249   return streamState->mediaSource();
00250 }

void OnDemandServerMediaSubsession::deleteStream ( unsigned  clientSessionId,
void *&  streamToken 
) [protected, virtual]

Reimplemented from ServerMediaSubsession.

Reimplemented in MPEG2TransportFileServerMediaSubsession.

Definition at line 252 of file OnDemandServerMediaSubsession.cpp.

References StreamState::endPlaying(), fDestinationsHashTable, HashTable::Lookup(), NULL, StreamState::referenceCount(), and HashTable::Remove().

Referenced by MPEG2TransportFileServerMediaSubsession::deleteStream().

00253                                                                      {
00254   StreamState* streamState = (StreamState*)streamToken;
00255 
00256   // Look up (and remove) the destinations for this client session:
00257   Destinations* destinations
00258     = (Destinations*)(fDestinationsHashTable->Lookup((char const*)clientSessionId));
00259   if (destinations != NULL) {
00260     fDestinationsHashTable->Remove((char const*)clientSessionId);
00261 
00262     // Stop streaming to these destinations:
00263     if (streamState != NULL) streamState->endPlaying(destinations);
00264   }
00265 
00266   // Delete the "StreamState" structure if it's no longer being used:
00267   if (streamState != NULL) {
00268     if (streamState->referenceCount() > 0) --streamState->referenceCount();
00269     if (streamState->referenceCount() == 0) {
00270       delete streamState;
00271       streamToken = NULL;
00272     }
00273   }
00274 
00275   // Finally, delete the destinations themselves:
00276   delete destinations;
00277 }

char const * OnDemandServerMediaSubsession::getAuxSDPLine ( RTPSink *  rtpSink,
FramedSource *  inputSource 
) [protected, virtual]

Reimplemented in DVVideoFileServerMediaSubsession, H264VideoFileServerMediaSubsession, and MPEG4VideoFileServerMediaSubsession.

Definition at line 280 of file OnDemandServerMediaSubsession.cpp.

References RTPSink::auxSDPLine(), and NULL.

Referenced by setSDPLinesFromRTPSink().

00280                                                                {
00281   // Default implementation:
00282   return rtpSink == NULL ? NULL : rtpSink->auxSDPLine();
00283 }

void OnDemandServerMediaSubsession::seekStreamSource ( FramedSource *  inputSource,
double &  seekNPT,
double  streamDuration,
u_int64_t &  numBytes 
) [protected, virtual]

Reimplemented in AACAudioMatroskaFileServerMediaSubsession, AC3AudioMatroskaFileServerMediaSubsession, H264VideoMatroskaFileServerMediaSubsession, DVVideoFileServerMediaSubsession, MP3AudioFileServerMediaSubsession, MPEG1or2DemuxedServerMediaSubsession, WAVAudioFileServerMediaSubsession, MP3AudioMatroskaFileServerMediaSubsession, T140TextMatroskaFileServerMediaSubsession, VorbisAudioMatroskaFileServerMediaSubsession, and VP8VideoMatroskaFileServerMediaSubsession.

Definition at line 285 of file OnDemandServerMediaSubsession.cpp.

Referenced by seekStream().

00286                                                                                                                           {
00287   // Default implementation: Do nothing
00288 }

void OnDemandServerMediaSubsession::setStreamSourceScale ( FramedSource *  inputSource,
float  scale 
) [protected, virtual]

Reimplemented in MP3AudioFileServerMediaSubsession, and WAVAudioFileServerMediaSubsession.

Definition at line 291 of file OnDemandServerMediaSubsession.cpp.

Referenced by setStreamScale().

00291                                                                      {
00292   // Default implementation: Do nothing
00293 }

void OnDemandServerMediaSubsession::closeStreamSource ( FramedSource *  inputSource  )  [protected, virtual]

Definition at line 295 of file OnDemandServerMediaSubsession.cpp.

References Medium::close().

Referenced by StreamState::reclaim(), and sdpLines().

00295                                                                                {
00296   Medium::close(inputSource);
00297 }

virtual FramedSource* OnDemandServerMediaSubsession::createNewStreamSource ( unsigned  clientSessionId,
unsigned &  estBitrate 
) [protected, pure virtual]

Implemented in AACAudioMatroskaFileServerMediaSubsession, AC3AudioMatroskaFileServerMediaSubsession, H264VideoMatroskaFileServerMediaSubsession, AC3AudioFileServerMediaSubsession, ADTSAudioFileServerMediaSubsession, AMRAudioFileServerMediaSubsession, DVVideoFileServerMediaSubsession, H263plusVideoFileServerMediaSubsession, H264VideoFileServerMediaSubsession, MP3AudioFileServerMediaSubsession, MPEG1or2DemuxedServerMediaSubsession, MPEG1or2VideoFileServerMediaSubsession, MPEG2TransportFileServerMediaSubsession, MPEG2TransportUDPServerMediaSubsession, MPEG4VideoFileServerMediaSubsession, WAVAudioFileServerMediaSubsession, MP3AudioMatroskaFileServerMediaSubsession, T140TextMatroskaFileServerMediaSubsession, VorbisAudioMatroskaFileServerMediaSubsession, and VP8VideoMatroskaFileServerMediaSubsession.

Referenced by getStreamParameters(), and sdpLines().

virtual RTPSink* OnDemandServerMediaSubsession::createNewRTPSink ( Groupsock *  rtpGroupsock,
unsigned char  rtpPayloadTypeIfDynamic,
FramedSource *  inputSource 
) [protected, pure virtual]

Implemented in AACAudioMatroskaFileServerMediaSubsession, AC3AudioMatroskaFileServerMediaSubsession, AC3AudioFileServerMediaSubsession, ADTSAudioFileServerMediaSubsession, AMRAudioFileServerMediaSubsession, DVVideoFileServerMediaSubsession, H263plusVideoFileServerMediaSubsession, H264VideoFileServerMediaSubsession, MP3AudioFileServerMediaSubsession, MPEG1or2DemuxedServerMediaSubsession, MPEG1or2VideoFileServerMediaSubsession, MPEG2TransportFileServerMediaSubsession, MPEG2TransportUDPServerMediaSubsession, MPEG4VideoFileServerMediaSubsession, WAVAudioFileServerMediaSubsession, T140TextMatroskaFileServerMediaSubsession, VorbisAudioMatroskaFileServerMediaSubsession, and VP8VideoMatroskaFileServerMediaSubsession.

Referenced by getStreamParameters(), and sdpLines().

void OnDemandServerMediaSubsession::setSDPLinesFromRTPSink ( RTPSink *  rtpSink,
FramedSource *  inputSource,
unsigned  estBitrate 
) [private]

Definition at line 300 of file OnDemandServerMediaSubsession.cpp.

References ServerMediaSubsession::fPortNumForSDP, fSDPLines, ServerMediaSubsession::fServerAddressForSDP, getAuxSDPLine(), NULL, ServerMediaSubsession::rangeSDPLine(), RTPSink::rtpmapLine(), RTPSink::rtpPayloadType(), sdpLines(), RTPSink::sdpMediaType(), strDup(), ServerMediaSubsession::trackId(), and AddressString::val().

Referenced by sdpLines().

00300                                                                                          {
00301   if (rtpSink == NULL) return;
00302 
00303   char const* mediaType = rtpSink->sdpMediaType();
00304   unsigned char rtpPayloadType = rtpSink->rtpPayloadType();
00305   AddressString ipAddressStr(fServerAddressForSDP);
00306   char* rtpmapLine = rtpSink->rtpmapLine();
00307   char const* rangeLine = rangeSDPLine();
00308   char const* auxSDPLine = getAuxSDPLine(rtpSink, inputSource);
00309   if (auxSDPLine == NULL) auxSDPLine = "";
00310 
00311   char const* const sdpFmt =
00312     "m=%s %u RTP/AVP %d\r\n"
00313     "c=IN IP4 %s\r\n"
00314     "b=AS:%u\r\n"
00315     "%s"
00316     "%s"
00317     "%s"
00318     "a=control:%s\r\n";
00319   unsigned sdpFmtSize = strlen(sdpFmt)
00320     + strlen(mediaType) + 5 /* max short len */ + 3 /* max char len */
00321     + strlen(ipAddressStr.val())
00322     + 20 /* max int len */
00323     + strlen(rtpmapLine)
00324     + strlen(rangeLine)
00325     + strlen(auxSDPLine)
00326     + strlen(trackId());
00327   char* sdpLines = new char[sdpFmtSize];
00328   sprintf(sdpLines, sdpFmt,
00329           mediaType, // m= <media>
00330           fPortNumForSDP, // m= <port>
00331           rtpPayloadType, // m= <fmt list>
00332           ipAddressStr.val(), // c= address
00333           estBitrate, // b=AS:<bandwidth>
00334           rtpmapLine, // a=rtpmap:... (if present)
00335           rangeLine, // a=range:... (if present)
00336           auxSDPLine, // optional extra SDP line
00337           trackId()); // a=control:<track-id>
00338   delete[] (char*)rangeLine; delete[] rtpmapLine;
00339 
00340   fSDPLines = strDup(sdpLines);
00341   delete[] sdpLines;
00342 }

unsigned ServerMediaSubsession::trackNumber (  )  const [inline, inherited]

Definition at line 121 of file ServerMediaSession.hh.

References ServerMediaSubsession::fTrackNumber.

Referenced by getStreamParameters(), and sdpLines().

00121 { return fTrackNumber; }

char const * ServerMediaSubsession::trackId (  )  [inherited]

Definition at line 324 of file ServerMediaSession.cpp.

References ServerMediaSubsession::fTrackId, ServerMediaSubsession::fTrackNumber, NULL, and strDup().

Referenced by PassiveServerMediaSubsession::sdpLines(), and setSDPLinesFromRTPSink().

00324                                            {
00325   if (fTrackNumber == 0) return NULL; // not yet in a ServerMediaSession
00326 
00327   if (fTrackId == NULL) {
00328     char buf[100];
00329     sprintf(buf, "track%d", fTrackNumber);
00330     fTrackId = strDup(buf);
00331   }
00332   return fTrackId;
00333 }

void ServerMediaSubsession::testScaleFactor ( float &  scale  )  [virtual, inherited]

Reimplemented in MP3AudioFileServerMediaSubsession, MPEG2TransportFileServerMediaSubsession, and WAVAudioFileServerMediaSubsession.

Definition at line 357 of file ServerMediaSession.cpp.

00357                                                         {
00358   // default implementation: Support scale = 1 only
00359   scale = 1;
00360 }

float ServerMediaSubsession::duration (  )  const [virtual, inherited]

Reimplemented in AACAudioMatroskaFileServerMediaSubsession, AC3AudioMatroskaFileServerMediaSubsession, H264VideoMatroskaFileServerMediaSubsession, DVVideoFileServerMediaSubsession, MP3AudioFileServerMediaSubsession, MPEG1or2DemuxedServerMediaSubsession, MPEG2TransportFileServerMediaSubsession, WAVAudioFileServerMediaSubsession, T140TextMatroskaFileServerMediaSubsession, VorbisAudioMatroskaFileServerMediaSubsession, and VP8VideoMatroskaFileServerMediaSubsession.

Definition at line 362 of file ServerMediaSession.cpp.

Referenced by ServerMediaSubsession::rangeSDPLine().

00362                                             {
00363   // default implementation: assume an unbounded session:
00364   return 0.0;
00365 }

void ServerMediaSubsession::setServerAddressAndPortForSDP ( netAddressBits  addressBits,
portNumBits  portBits 
) [inherited]

Definition at line 367 of file ServerMediaSession.cpp.

References ServerMediaSubsession::fPortNumForSDP, and ServerMediaSubsession::fServerAddressForSDP.

00368                                                                                 {
00369   fServerAddressForSDP = addressBits;
00370   fPortNumForSDP = portBits;
00371 }

char const * ServerMediaSubsession::rangeSDPLine (  )  const [protected, inherited]

Definition at line 374 of file ServerMediaSession.cpp.

References ServerMediaSubsession::duration(), ServerMediaSession::duration(), ServerMediaSubsession::fParentSession, NULL, and strDup().

Referenced by PassiveServerMediaSubsession::sdpLines(), and setSDPLinesFromRTPSink().

00374                                           {
00375   if (fParentSession == NULL) return NULL;
00376 
00377   // If all of our parent's subsessions have the same duration
00378   // (as indicated by "fParentSession->duration() >= 0"), there's no "a=range:" line:
00379   if (fParentSession->duration() >= 0.0) return strDup("");
00380 
00381   // Use our own duration for a "a=range:" line:
00382   float ourDuration = duration();
00383   if (ourDuration == 0.0) {
00384     return strDup("a=range:npt=0-\r\n");
00385   } else {
00386     char buf[100];
00387     sprintf(buf, "a=range:npt=0-%.3f\r\n", ourDuration);
00388     return strDup(buf);
00389   }
00390 }

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 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(), 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(), 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.

Referenced by QuickTimeFileSink::addArbitraryString(), FileSink::addData(), RTCPInstance::addStreamSocket(), MPEG2IFrameIndexFromTransportStream::addToTail(), StreamParser::afterGettingBytes1(), DummySink::afterGettingFrame(), T140IdleFilter::afterGettingFrame(), MultiFramedRTPSink::afterGettingFrame1(), InputESSourceRecord::afterGettingFrame1(), MPEG2TransportStreamFramer::afterGettingFrame1(), MPEG2IFrameIndexFromTransportStream::afterGettingFrame1(), H264VideoStreamDiscreteFramer::afterGettingFrame1(), BasicUDPSink::afterGettingFrame1(), MPEG4VideoFileServerMediaSubsession::afterPlayingDummy1(), H264VideoFileServerMediaSubsession::afterPlayingDummy1(), MPEG4VideoStreamParser::analyzeVOLHeader(), announceStream(), RTSPServer::RTSPClientSession::changeClientInputSocket(), MPEG4VideoFileServerMediaSubsession::checkForAuxSDPLine1(), H264VideoFileServerMediaSubsession::checkForAuxSDPLine1(), Medium::close(), MPEG2IFrameIndexFromTransportStream::compactParseBuffer(), RTSPClient::connectionHandler1(), RTSPClient::connectToServer(), T140TextRTPSink::continuePlaying(), QuickTimeFileSink::continuePlaying(), H264VideoRTPSink::continuePlaying(), AVIFileSink::continuePlaying(), VP8VideoMatroskaFileServerMediaSubsession::createNewRTPSink(), VorbisAudioMatroskaFileServerMediaSubsession::createNewRTPSink(), T140TextMatroskaFileServerMediaSubsession::createNewRTPSink(), MPEG4VideoFileServerMediaSubsession::createNewRTPSink(), MPEG2TransportUDPServerMediaSubsession::createNewRTPSink(), MPEG2TransportFileServerMediaSubsession::createNewRTPSink(), MPEG1or2VideoFileServerMediaSubsession::createNewRTPSink(), MPEG1or2DemuxedServerMediaSubsession::createNewRTPSink(), MP3AudioFileServerMediaSubsession::createNewRTPSink(), H264VideoFileServerMediaSubsession::createNewRTPSink(), H263plusVideoFileServerMediaSubsession::createNewRTPSink(), DVVideoFileServerMediaSubsession::createNewRTPSink(), AMRAudioFileServerMediaSubsession::createNewRTPSink(), ADTSAudioFileServerMediaSubsession::createNewRTPSink(), AC3AudioMatroskaFileServerMediaSubsession::createNewRTPSink(), AC3AudioFileServerMediaSubsession::createNewRTPSink(), AACAudioMatroskaFileServerMediaSubsession::createNewRTPSink(), MPEG4VideoFileServerMediaSubsession::createNewStreamSource(), MPEG2TransportUDPServerMediaSubsession::createNewStreamSource(), MPEG2TransportFileServerMediaSubsession::createNewStreamSource(), MPEG1or2VideoFileServerMediaSubsession::createNewStreamSource(), MPEG1or2DemuxedServerMediaSubsession::createNewStreamSource(), MP3AudioFileServerMediaSubsession::createNewStreamSource(), H264VideoMatroskaFileServerMediaSubsession::createNewStreamSource(), H264VideoFileServerMediaSubsession::createNewStreamSource(), H263plusVideoFileServerMediaSubsession::createNewStreamSource(), DVVideoFileServerMediaSubsession::createNewStreamSource(), AMRAudioFileServerMediaSubsession::createNewStreamSource(), ADTSAudioFileServerMediaSubsession::createNewStreamSource(), AC3AudioFileServerMediaSubsession::createNewStreamSource(), AMRDeinterleavingBuffer::deliverIncomingFrame(), MPEG2IFrameIndexFromTransportStream::deliverIndexRecord(), SegmentQueue::dequeue(), DeviceSource::DeviceSource(), WAVAudioFileSource::doGetNextFrame(), T140IdleFilter::doGetNextFrame(), MPEG2IFrameIndexFromTransportStream::doGetNextFrame(), MP3FileSource::doGetNextFrame(), H264FUAFragmenter::doGetNextFrame(), ByteStreamMultiFileSource::doGetNextFrame(), ByteStreamFileSource::doGetNextFrame(), BasicUDPSource::doGetNextFrame(), AMRAudioFileSource::doGetNextFrame(), ADTSAudioFileSource::doGetNextFrame(), MultiFramedRTPSource::doGetNextFrame1(), MP3FileSource::doGetNextFrame1(), ADUFromMP3Source::doGetNextFrame1(), SIPClient::doInviteStateMachine(), ByteStreamFileSource::doReadFromFile(), MPEG1or2VideoRTPSink::doSpecialFrameHandling(), MP3ADURTPSink::doSpecialFrameHandling(), H263plusVideoRTPSink::doSpecialFrameHandling(), T140IdleFilter::doStopGettingFrames(), ByteStreamFileSource::doStopGettingFrames(), BasicUDPSource::doStopGettingFrames(), SegmentQueue::enqueueNewSegment(), StreamParser::ensureValidBytes1(), MediaSubsession::env(), SubsessionIOState::envir(), RTSPServer::RTSPClientSession::envir(), RTPInterface::envir(), AVISubsessionIOState::envir(), ServerMediaSession::generateSDPDescription(), RTPSource::getAttributes(), MP3FileSource::getAttributes(), MP3ADUTranscoder::getAttributes(), MediaSource::getAttributes(), MPEG4VideoFileServerMediaSubsession::getAuxSDPLine(), H264VideoFileServerMediaSubsession::getAuxSDPLine(), getMPEG1or2TimeCode(), FramedSource::getNextFrame(), getOptions(), DVVideoStreamFramer::getProfile(), SIPClient::getResponse(), SIPClient::getResponseCode(), getSDPDescription(), getStreamParameters(), RTSPClient::handleGET_PARAMETERResponse(), RTSPServerSupportingHTTPStreaming::RTSPClientSessionSupportingHTTPStreaming::handleHTTPCmd_StreamingGET(), RTSPClient::handleIncomingRequest(), RTSPClient::handlePLAYResponse(), RTSPClient::handleRequestError(), RTSPClient::handleResponseBytes(), RTSPClient::handleSETUPResponse(), RTSPServer::incomingConnectionHandler(), RTSPClient::incomingDataHandler1(), RTCPInstance::incomingReportHandler1(), MP3FileSource::initializeStream(), MediaSession::initializeWithSDP(), MediaSession::initiateByMediaType(), SIPClient::invite1(), DynamicRTSPServer::lookupServerMediaSession(), MatroskaDemux::MatroskaDemux(), MatroskaFile::MatroskaFile(), MPEG4GenericRTPSource::MPEG4GenericRTPSource(), MatroskaDemux::newDemuxedTrack(), MPEG1or2FileServerDemux::newElementaryStream(), MPEG1or2Demux::newElementaryStream(), MPEG4GenericBufferedPacket::nextEnclosedFrameSize(), AMRBufferedPacket::nextEnclosedFrameSize(), RTSPClient::openConnection(), MPEG2TransportStreamIndexFile::openFid(), MPEG2IFrameIndexFromTransportStream::parseFrame(), AC3AudioStreamParser::parseFrame(), MPEGProgramStreamParser::parsePackHeader(), MPEGProgramStreamParser::parsePESPacket(), SIPClient::parseResponseCode(), MediaSession::parseSDPLine(), MPEG1or2VideoStreamParser::parseSlice(), MatroskaFileParser::parseStartOfFile(), MPEGProgramStreamParser::parseSystemHeader(), MPEG4VideoStreamParser::parseVideoObjectLayer(), MPEG4VideoStreamParser::parseVideoObjectPlane(), MPEG4VideoStreamParser::parseVisualObject(), TCPStreamSink::processBuffer(), SIPClient::processURL(), AC3AudioStreamParser::readAndSaveAFrame(), MPEG1or2Demux::registerReadInterest(), RTCPInstance::reschedule(), RTSPClient::resendCommand(), RTSPClient::resetTCPSockets(), RTSPClient::responseHandlerForHTTP_GET1(), RTSPServer::rtspURLPrefix(), RTCPInstance::schedule(), sdpLines(), SIPClient::sendACK(), SIPClient::sendBYE(), SIPClient::sendINVITE(), MultiFramedRTPSink::sendPacketIfNecessary(), SIPClient::sendRequest(), RTSPClient::sendRequest(), DarwinInjector::setDestination(), RTSPClient::setupHTTPTunneling1(), setupNextSubsession(), RTSPServer::setUpTunnelingOverHTTP(), QuickTimeFileSink::setWord(), AVIFileSink::setWord(), QuickTimeFileSink::setWord64(), shutdownStream(), SIPClient::SIPClient(), TCPStreamSink::socketWritableHandler1(), AMRAudioRTPSink::sourceIsCompatibleWithUs(), QuickTimeFileSink::startPlaying(), StreamState::startPlaying(), MediaSink::startPlaying(), AVIFileSink::startPlaying(), startPlayingSession(), PassiveServerMediaSubsession::startStream(), MediaSink::stopPlaying(), tearDownSession(), SIPClient::timerAHandler(), SIPClient::timerBHandler(), SIPClient::timerDHandler(), ClientTrickPlayState::updateStateOnScaleChange(), MPEG2TransportStreamFramer::updateTSPacketDurationEstimate(), BasicUDPSource::~BasicUDPSource(), ByteStreamFileSource::~ByteStreamFileSource(), DeviceSource::~DeviceSource(), RTSPServer::~RTSPServer(), StreamClientState::~StreamClientState(), and T140IdleFilter::~T140IdleFilter().

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::isSource (  )  const [virtual, inherited]

Reimplemented in MediaSource.

Definition at line 62 of file Media.cpp.

References False.

Referenced by MediaSource::lookupByName().

00062                                {
00063   return False; // default implementation
00064 }

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(), WAVAudioFileSource::doGetNextFrame(), MP3FileSource::doGetNextFrame(), AMRAudioFileSource::doGetNextFrame(), ADTSAudioFileSource::doGetNextFrame(), MultiFramedRTPSource::doGetNextFrame1(), ByteStreamFileSource::doReadFromFile(), RTCPInstance::reschedule(), RTCPInstance::schedule(), MultiFramedRTPSink::sendPacketIfNecessary(), and MediaSink::stopPlaying().

00078                         {
00079         return fNextTask;
00080   }

Friends And Related Function Documentation

friend class StreamState [friend]

Definition at line 102 of file OnDemandServerMediaSubsession.hh.

Referenced by getStreamParameters().

friend class MediaLookupTable [friend, inherited]

Definition at line 74 of file Media.hh.

Field Documentation

char* OnDemandServerMediaSubsession::fSDPLines [protected]

Definition at line 94 of file OnDemandServerMediaSubsession.hh.

Referenced by sdpLines(), setSDPLinesFromRTPSink(), and ~OnDemandServerMediaSubsession().

Boolean OnDemandServerMediaSubsession::fReuseFirstSource [private]

Definition at line 97 of file OnDemandServerMediaSubsession.hh.

Referenced by getStreamParameters(), pauseStream(), seekStream(), and setStreamScale().

portNumBits OnDemandServerMediaSubsession::fInitialPortNum [private]

Definition at line 98 of file OnDemandServerMediaSubsession.hh.

Referenced by getStreamParameters().

HashTable* OnDemandServerMediaSubsession::fDestinationsHashTable [private]

Definition at line 99 of file OnDemandServerMediaSubsession.hh.

Referenced by deleteStream(), getStreamParameters(), startStream(), and ~OnDemandServerMediaSubsession().

void* OnDemandServerMediaSubsession::fLastStreamToken [private]

Definition at line 100 of file OnDemandServerMediaSubsession.hh.

Referenced by getStreamParameters(), and StreamState::reclaim().

char OnDemandServerMediaSubsession::fCNAME[100] [private]

Definition at line 101 of file OnDemandServerMediaSubsession.hh.

Referenced by StreamState::startPlaying().

ServerMediaSession* ServerMediaSubsession::fParentSession [protected, inherited]

Definition at line 169 of file ServerMediaSession.hh.

Referenced by ServerMediaSubsession::rangeSDPLine().

netAddressBits ServerMediaSubsession::fServerAddressForSDP [protected, inherited]

Definition at line 170 of file ServerMediaSession.hh.

Referenced by setSDPLinesFromRTPSink(), and ServerMediaSubsession::setServerAddressAndPortForSDP().

portNumBits ServerMediaSubsession::fPortNumForSDP [protected, inherited]

Definition at line 171 of file ServerMediaSession.hh.

Referenced by setSDPLinesFromRTPSink(), and ServerMediaSubsession::setServerAddressAndPortForSDP().

The documentation for this class was generated from the following files:
Generated on Thu Feb 2 23:55:41 2012 for live by  doxygen 1.5.2