void OnDemandServerMediaSubsession::nullSeekStream(unsigned /*clientSessionId*/, void* streamToken,
double streamEndTime, u_int64_t& numBytes) {
numBytes = 0; // by default: unknown
StreamState* streamState = (StreamState*)streamToken;
if (streamState != NULL && streamState->mediaSource() != NULL) {
// Because we're not seeking here, get the current NPT, and remember it as the new 'start' NPT:
streamState->startNPT() = getCurrentNPT(streamToken);
double duration = streamEndTime - streamState->startNPT();
if (duration < 0.0) duration = 0.0;
setStreamSourceDuration(streamState->mediaSource(), duration, numBytes);
RTPSink* rtpSink = streamState->rtpSink(); // alias
if (rtpSink != NULL) rtpSink->resetPresentationTimes();
}
}
void WAVAudioFileServerMediaSubsession
::seekStreamSource(FramedSource* inputSource, double& seekNPT, double streamDuration, u_int64_t& numBytes) {
WAVAudioFileSource* wavSource;
if (fBitsPerSample > 8) {
// "inputSource" is a filter; its input source is the original WAV file source:
wavSource = (WAVAudioFileSource*)(((FramedFilter*)inputSource)->inputSource());
} else {
// "inputSource" is the original WAV file source:
wavSource = (WAVAudioFileSource*)inputSource;
}
unsigned seekSampleNumber = (unsigned)(seekNPT*fSamplingFrequency);
unsigned seekByteNumber = seekSampleNumber*((fNumChannels*fBitsPerSample)/8);
wavSource->seekToPCMByte(seekByteNumber);
setStreamSourceDuration(inputSource, streamDuration, numBytes);
}
