ADTSAudioFileSource Class Reference

#include <ADTSAudioFileSource.hh>

Inheritance diagram for ADTSAudioFileSource:

[legend]Collaboration diagram for ADTSAudioFileSource:


Public Types
typedef void(	afterGettingFunc )(void *clientData, unsigned frameSize, unsigned numTruncatedBytes, struct timeval presentationTime, unsigned durationInMicroseconds)
typedef void(	onCloseFunc )(void *clientData)
Public Member Functions
unsigned	samplingFrequency () const
unsigned	numChannels () const
char const *	configStr () const
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 void	getAttributes () const
virtual char const *	MIMEtype () const
virtual Boolean	isRTPSource () const
virtual Boolean	isMPEG1or2VideoStreamFramer () const
virtual Boolean	isMPEG4VideoStreamFramer () const
virtual Boolean	isH264VideoStreamFramer () 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 ADTSAudioFileSource *	createNew (UsageEnvironment &env, char const *fileName)
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	close (UsageEnvironment &env, char const *mediumName)
static void	close (Medium *medium)
Protected Member Functions
virtual void	doStopGettingFrames ()
TaskToken &	nextTask ()
Static Protected Member Functions
static void	afterGetting (FramedSource *source)
Protected Attributes
FILE *	fFid
unsigned char *	fTo
unsigned	fMaxSize
unsigned	fFrameSize
unsigned	fNumTruncatedBytes
timeval	fPresentationTime
unsigned	fDurationInMicroseconds
Private Member Functions
	ADTSAudioFileSource (UsageEnvironment &env, FILE *fid, u_int8_t profile, u_int8_t samplingFrequencyIndex, u_int8_t channelConfiguration)
virtual	~ADTSAudioFileSource ()
virtual void	doGetNextFrame ()
Private Attributes
unsigned	fSamplingFrequency
unsigned	fNumChannels
unsigned	fuSecsPerFrame
char	fConfigStr [5]

Detailed Description

Definition at line 28 of file ADTSAudioFileSource.hh.

Member Typedef Documentation

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.

Constructor & Destructor Documentation

ADTSAudioFileSource::ADTSAudioFileSource	(	UsageEnvironment &	env,
		FILE *	fid,
		u_int8_t	profile,
		u_int8_t	samplingFrequencyIndex,
		u_int8_t	channelConfiguration
	)			`[private]`

Definition at line 95 of file ADTSAudioFileSource.cpp.

References fConfigStr, fNumChannels, fSamplingFrequency, fuSecsPerFrame, and samplingFrequencyTable.

Referenced by createNew().

00097   : FramedFileSource(env, fid) {
00098   fSamplingFrequency = samplingFrequencyTable[samplingFrequencyIndex];
00099   fNumChannels = channelConfiguration == 0 ? 2 : channelConfiguration;
00100   fuSecsPerFrame
00101     = (1024/*samples-per-frame*/*1000000) / fSamplingFrequency/*samples-per-second*/;
00102 
00103   // Construct the 'AudioSpecificConfig', and from it, the corresponding ASCII string:
00104   unsigned char audioSpecificConfig[2];
00105   u_int8_t const audioObjectType = profile + 1;
00106   audioSpecificConfig[0] = (audioObjectType<<3) | (samplingFrequencyIndex>>1);
00107   audioSpecificConfig[1] = (samplingFrequencyIndex<<7) | (channelConfiguration<<3);
00108   sprintf(fConfigStr, "%02X%02x", audioSpecificConfig[0], audioSpecificConfig[1]);
00109 }

ADTSAudioFileSource::~ADTSAudioFileSource ( ) [private, virtual]

Definition at line 111 of file ADTSAudioFileSource.cpp.

References CloseInputFile(), and FramedFileSource::fFid.

00111                                           {
00112   CloseInputFile(fFid);
00113 }

Member Function Documentation

ADTSAudioFileSource * ADTSAudioFileSource::createNew	(	UsageEnvironment &	env,
		char const *	fileName
	)			`[static]`

Definition at line 35 of file ADTSAudioFileSource.cpp.

References ADTSAudioFileSource(), CloseInputFile(), env, NULL, OpenInputFile(), samplingFrequencyTable, and UsageEnvironment::setResultMsg().

Referenced by ADTSAudioFileServerMediaSubsession::createNewStreamSource().

00035                                                                           {
00036   FILE* fid = NULL;
00037   do {
00038     fid = OpenInputFile(env, fileName);
00039     if (fid == NULL) break;
00040 
00041     // Now, having opened the input file, read the fixed header of the first frame,
00042     // to get the audio stream's parameters:
00043     unsigned char fixedHeader[4]; // it's actually 3.5 bytes long
00044     if (fread(fixedHeader, 1, sizeof fixedHeader, fid) < sizeof fixedHeader) break;
00045 
00046     // Check the 'syncword':
00047     if (!(fixedHeader[0] == 0xFF && (fixedHeader[1]&0xF0) == 0xF0)) {
00048       env.setResultMsg("Bad 'syncword' at start of ADTS file");
00049       break;
00050     }
00051 
00052     // Get and check the 'profile':
00053     u_int8_t profile = (fixedHeader[2]&0xC0)>>6; // 2 bits
00054     if (profile == 3) {
00055       env.setResultMsg("Bad (reserved) 'profile': 3 in first frame of ADTS file");
00056       break;
00057     }
00058 
00059     // Get and check the 'sampling_frequency_index':
00060     u_int8_t sampling_frequency_index = (fixedHeader[2]&0x3C)>>2; // 4 bits
00061     if (samplingFrequencyTable[sampling_frequency_index] == 0) {
00062       env.setResultMsg("Bad 'sampling_frequency_index' in first frame of ADTS file");
00063       break;
00064     }
00065 
00066     // Get and check the 'channel_configuration':
00067     u_int8_t channel_configuration
00068       = ((fixedHeader[2]&0x01)<<2)|((fixedHeader[3]&0xC0)>>6); // 3 bits
00069 
00070     // If we get here, the frame header was OK.
00071     // Reset the fid to the beginning of the file:
00072 #ifndef _WIN32_WCE
00073     rewind(fid);
00074 #else
00075     fseek(fid, SEEK_SET,0);
00076 #endif
00077 #ifdef DEBUG
00078     fprintf(stderr, "Read first frame: profile %d, "
00079             "sampling_frequency_index %d => samplingFrequency %d, "
00080             "channel_configuration %d\n",
00081             profile,
00082             sampling_frequency_index, samplingFrequencyTable[sampling_frequency_index],
00083             channel_configuration);
00084 #endif
00085     return new ADTSAudioFileSource(env, fid, profile,
00086                                    sampling_frequency_index, channel_configuration);
00087   } while (0);
00088 
00089   // An error occurred:
00090   CloseInputFile(fid);
00091   return NULL;
00092 }

unsigned ADTSAudioFileSource::samplingFrequency ( ) const [inline]

Definition at line 33 of file ADTSAudioFileSource.hh.

References fSamplingFrequency.

Referenced by ADTSAudioFileServerMediaSubsession::createNewRTPSink().

00033 { return fSamplingFrequency; }

unsigned ADTSAudioFileSource::numChannels ( ) const [inline]

Definition at line 34 of file ADTSAudioFileSource.hh.

References fNumChannels.

Referenced by ADTSAudioFileServerMediaSubsession::createNewRTPSink().

00034 { return fNumChannels; }

char const* ADTSAudioFileSource::configStr ( ) const [inline]

Definition at line 35 of file ADTSAudioFileSource.hh.

References fConfigStr.

Referenced by ADTSAudioFileServerMediaSubsession::createNewRTPSink().

00035 { return fConfigStr; }

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

Implements FramedSource.

Definition at line 117 of file ADTSAudioFileSource.cpp.

References FramedSource::afterGetting(), Medium::envir(), FramedSource::fDurationInMicroseconds, FramedFileSource::fFid, FramedSource::fFrameSize, FramedSource::fMaxSize, FramedSource::fNumTruncatedBytes, FramedSource::fPresentationTime, FramedSource::fTo, fuSecsPerFrame, FramedSource::handleClosure(), Medium::nextTask(), NULL, TaskScheduler::scheduleDelayedTask(), and UsageEnvironment::taskScheduler().

00117                                          {
00118   // Begin by reading the 7-byte fixed_variable headers:
00119   unsigned char headers[7];
00120   if (fread(headers, 1, sizeof headers, fFid) < sizeof headers
00121       || feof(fFid) || ferror(fFid)) {
00122     // The input source has ended:
00123     handleClosure(this);
00124     return;
00125   }
00126 
00127   // Extract important fields from the headers:
00128   Boolean protection_absent = headers[1]&0x01;
00129   u_int16_t frame_length
00130     = ((headers[3]&0x03)<<11) | (headers[4]<<3) | ((headers[5]&0xE0)>>5);
00131 #ifdef DEBUG
00132   u_int16_t syncword = (headers[0]<<4) | (headers[1]>>4);
00133   fprintf(stderr, "Read frame: syncword 0x%x, protection_absent %d, frame_length %d\n", syncword, protection_absent, frame_length);
00134   if (syncword != 0xFFF) fprintf(stderr, "WARNING: Bad syncword!\n");
00135 #endif
00136   unsigned numBytesToRead
00137     = frame_length > sizeof headers ? frame_length - sizeof headers : 0;
00138 
00139   // If there's a 'crc_check' field, skip it:
00140   if (!protection_absent) {
00141     fseek(fFid, 2, SEEK_CUR);
00142     numBytesToRead = numBytesToRead > 2 ? numBytesToRead - 2 : 0;
00143   }
00144 
00145   // Next, read the raw frame data into the buffer provided:
00146   if (numBytesToRead > fMaxSize) {
00147     fNumTruncatedBytes = numBytesToRead - fMaxSize;
00148     numBytesToRead = fMaxSize;
00149   }
00150   int numBytesRead = fread(fTo, 1, numBytesToRead, fFid);
00151   if (numBytesRead < 0) numBytesRead = 0;
00152   fFrameSize = numBytesRead;
00153   fNumTruncatedBytes += numBytesToRead - numBytesRead;
00154 
00155   // Set the 'presentation time':
00156   if (fPresentationTime.tv_sec == 0 && fPresentationTime.tv_usec == 0) {
00157     // This is the first frame, so use the current time:
00158     gettimeofday(&fPresentationTime, NULL);
00159   } else {
00160     // Increment by the play time of the previous frame:
00161     unsigned uSeconds = fPresentationTime.tv_usec + fuSecsPerFrame;
00162     fPresentationTime.tv_sec += uSeconds/1000000;
00163     fPresentationTime.tv_usec = uSeconds%1000000;
00164   }
00165 
00166   fDurationInMicroseconds = fuSecsPerFrame;
00167 
00168   // Switch to another task, and inform the reader that he has data:
00169   nextTask() = envir().taskScheduler().scheduleDelayedTask(0,
00170                                 (TaskFunc*)FramedSource::afterGetting, this);
00171 }

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 62 of file MediaSource.cpp.

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

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

00064                                                               {
00065   resultSource = NULL; // unless we succeed
00066 
00067   Medium* medium;
00068   if (!Medium::lookupByName(env, sourceName, medium)) return False;
00069 
00070   if (!medium->isSource()) {
00071     env.setResultMsg(sourceName, " is not a media source");
00072     return False;
00073   }
00074 
00075   resultSource = (MediaSource*)medium;
00076   return True;
00077 }

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

Definition at line 65 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().

00066                                                          {
00067   resultMedium = MediaLookupTable::ourMedia(env)->lookup(mediumName);
00068   if (resultMedium == NULL) {
00069     env.setResultMsg("Medium ", mediumName, " does not exist");
00070     return False;
00071   }
00072 
00073   return True;
00074 }

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, 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     exit(1);
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 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 afterPlaying(), InputESSourceRecord::askForNewData(), MPEG2TransportStreamFromESSource::awaitNewBuffer(), QuickTimeFileSink::continuePlaying(), AVIFileSink::continuePlaying(), DeviceSource::deliverFrame(), QCELPDeinterleaver::doGetNextFrame(), AMRDeinterleaver::doGetNextFrame(), ByteStreamFileSource::fileReadableHandler(), and BasicUDPSource::incomingPacketHandler1().

00060 {return fIsCurrentlyAwaitingData;}

void FramedSource::afterGetting ( FramedSource * source ) [static, protected, 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 }

void FramedSource::doStopGettingFrames ( ) [protected, virtual, inherited]

Reimplemented in AMRDeinterleaver, BasicUDPSource, ByteStreamFileSource, FramedFilter, MPEG1or2DemuxedElementaryStream, MPEG2TransportStreamFramer, MPEG2TransportStreamFromESSource, MPEG2TransportStreamFromPESSource, MPEG2TransportStreamTrickModeFilter, and MultiFramedRTPSource.

Definition at line 110 of file FramedSource.cpp.

Referenced by FramedSource::stopGettingFrames().

00110                                        {
00111   // Default implementation: Do nothing
00112   // Subclasses may wish to specialize this so as to ensure that a
00113   // subsequent reader can pick up where this one left off.
00114 }

void MediaSource::getAttributes ( ) const [virtual, inherited]

Reimplemented in FramedFilter, MP3ADUTranscoder, MP3FileSource, and RTPSource.

Definition at line 79 of file MediaSource.cpp.

References Medium::envir(), and UsageEnvironment::setResultMsg().

Referenced by MP3ADUTranscoder::getAttributes(), and FramedFilter::getAttributes().

00079                                       {
00080   // Default implementation
00081   envir().setResultMsg("");
00082 }

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

Reimplemented in RawAMRRTPSource, AC3AudioRTPSource, FramedFilter, H261VideoRTPSource, H263plusVideoRTPSource, H264VideoRTPSource, JPEGVideoRTPSource, ADUFromMP3Source, MP3FromADUSource, MP3ADURTPSource, MP3FileSource, MPEG1or2AudioRTPSource, MPEG1or2DemuxedElementaryStream, MPEG1or2VideoRTPSource, MPEG4ESVideoRTPSource, MPEG4GenericRTPSource, MPEG4LATMAudioRTPSource, QuickTimeGenericRTPSource, SimpleRTPSource, and RawQCELPRTPSource.

Definition at line 36 of file MediaSource.cpp.

Referenced by HTTPSink::continuePlaying(), MP3ADUTranscoder::createNew(), MP3FromADUSource::createNew(), ADUFromMP3Source::createNew(), MP3ADUinterleaverBase::getInputSource(), MediaSession::initiateByMediaType(), SimpleRTPSource::MIMEtype(), QuickTimeGenericRTPSource::MIMEtype(), FramedFilter::MIMEtype(), and MPEG1or2DemuxedElementaryStream::MPEG1or2DemuxedElementaryStream().

00036                                         {
00037   return "application/OCTET-STREAM"; // default type
00038 }

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::isJPEGVideoSource ( ) const [virtual, inherited]

Reimplemented in JPEGVideoSource.

Definition at line 55 of file MediaSource.cpp.

References False.

Referenced by JPEGVideoRTPSink::sourceIsCompatibleWithUs().

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

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

Reimplemented in AMRAudioSource.

Definition at line 58 of file MediaSource.cpp.

References False.

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

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

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

Definition at line 76 of file Media.cpp.

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

00076                                                           {
00077   MediaLookupTable::ourMedia(env)->remove(name);
00078 }

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

Definition at line 80 of file Media.cpp.

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

00080                                  {
00081   if (medium == NULL) return;
00082 
00083   close(medium->envir(), medium->name());
00084 }

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

Definition at line 59 of file Media.hh.

References Medium::fEnviron.

ADTSAudioFileSource Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation