void DVVideoFileServerMediaSubsession::seekStreamSource(FramedSource* inputSource, double seekNPT) {
// First, get the file source from "inputSource" (a framer):
DVVideoStreamFramer* framer = (DVVideoStreamFramer*)inputSource;
ByteStreamFileSource* fileSource = (ByteStreamFileSource*)(framer->inputSource());
// Then figure out where to seek to within the file:
if (fFileDuration > 0.0) {
u_int64_t seekByteNumber = (u_int64_t)(((int64_t)fFileSize*seekNPT)/fFileDuration);
fileSource->seekToByteAbsolute(seekByteNumber);
}
}
void DVVideoFileServerMediaSubsession
::setStreamSourceDuration(FramedSource* inputSource, double streamDuration, u_int64_t& numBytes) {
// First, get the file source from "inputSource" (a framer):
DVVideoStreamFramer* framer = (DVVideoStreamFramer*)inputSource;
ByteStreamFileSource* fileSource = (ByteStreamFileSource*)(framer->inputSource());
// Then figure out how many bytes to limit the streaming to:
if (fFileDuration > 0.0) {
numBytes = (u_int64_t)(((int64_t)fFileSize*streamDuration)/fFileDuration);
fileSource->seekToByteRelative(0, numBytes);
}
}