char const*
OnDemandServerMediaSubsession::sdpLines() {
if (fSDPLines == NULL) {
// We need to construct a set of SDP lines that describe this
// subsession (as a unicast stream). To do so, we first create
// dummy (unused) source and "RTPSink" objects,
// whose parameters we use for the SDP lines:
unsigned estBitrate;
FramedSource* inputSource = createNewStreamSource(0, estBitrate);
if (inputSource == NULL) return NULL; // file not found
struct in_addr dummyAddr;
dummyAddr.s_addr = 0;
Groupsock dummyGroupsock(envir(), dummyAddr, 0, 0);
unsigned char rtpPayloadType = 96 + trackNumber()-1; // if dynamic
RTPSink* dummyRTPSink
= createNewRTPSink(&dummyGroupsock, rtpPayloadType, inputSource);
setSDPLinesFromRTPSink(dummyRTPSink, inputSource, estBitrate);
Medium::close(dummyRTPSink);
closeStreamSource(inputSource);
}
return fSDPLines;
}
char const*
EncoderMediaSubsession::sdpLines() {
if (fSDPLines == NULL) {
// We need to construct a set of SDP lines that describe this
// subsession (as a unicast stream). To do so, we first create
// dummy (unused) source and "RTPSink" objects,
// whose parameters we use for the SDP lines:
unsigned estBitrate;
if (!fMediaSource)
{
if (fIsAudio)
fMediaSource = createNewAudioSource(0, estBitrate);
else
fMediaSource = createNewVideoSource(0, estBitrate);
}
if (fMediaSource == NULL) return NULL; // file not found
struct in_addr dummyAddr;
dummyAddr.s_addr = 0;
Groupsock dummyGroupsock(envir(), dummyAddr, 0, 0);
unsigned char rtpPayloadType = 96 + trackNumber()-1; // if dynamic
RTPSink* dummyRTPSink
= createNewRTPSink(&dummyGroupsock, rtpPayloadType, fMediaSource);
if (!fIsAudio)
{
Debug(ckite_log_message, "setVideoSize fWidth = %d, fHeight = %d\n", fWidth, fHeight);
#ifdef SDKH264
((H264VideoRTPSink*)dummyRTPSink)->setVideoSize(fWidth, fHeight); // set video size
#else
((MPEG4ESVideoRTPSink*)dummyRTPSink)->setVideoSize(fWidth, fHeight); // set video size
#endif
}
setSDPLinesFromRTPSink(dummyRTPSink, fMediaSource, estBitrate);
Medium::close(dummyRTPSink);
closeStreamSource(fMediaSource);
fMediaSource = NULL;
}
return fSDPLines;
}
