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Handle receiving in the beginning without clock gracefully

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We'll only have a clock once the source element is actually in Playing.
This commit is contained in:
Sebastian Dröge 2019-07-19 13:00:27 +03:00
parent bbdfae8cdd
commit 3ac1a6b288
1 changed files with 20 additions and 7 deletions
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27
src/receiver.rs
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@ -1051,8 +1051,11 @@ impl<T: ReceiverType> Receiver<T> {
timestamp: i64,
timecode: i64,
duration: gst::ClockTime,
) -> (gst::ClockTime, gst::ClockTime) {
let clock = element.get_clock().unwrap();
) -> Option<(gst::ClockTime, gst::ClockTime)> {
let clock = match element.get_clock() {
None => return None,
Some(clock) => clock,
};
// For now take the current running time as PTS. At a later time we
// will want to work with the timestamp given by the NDI SDK if available
@ -1112,7 +1115,7 @@ impl<T: ReceiverType> Receiver<T> {
duration,
);
(pts, duration)
Some((pts, duration))
}
}
@ -1197,7 +1200,12 @@ impl Receiver<VideoReceiver> {
video_frame,
);
let (pts, duration) = self.calculate_video_timestamp(element, &video_frame);
let (pts, duration) = self
.calculate_video_timestamp(element, &video_frame)
.ok_or_else(|| {
gst_debug!(self.0.cat, obj: element, "Flushing, dropping buffer");
gst::FlowError::CustomError
})?;
// Simply read all video frames while flushing but don't copy them or anything to
// make sure that we're not accumulating anything here
@ -1219,7 +1227,7 @@ impl Receiver<VideoReceiver> {
&self,
element: &gst_base::BaseSrc,
video_frame: &VideoFrame,
) -> (gst::ClockTime, gst::ClockTime) {
) -> Option<(gst::ClockTime, gst::ClockTime)> {
let duration = gst::SECOND
.mul_div_floor(
video_frame.frame_rate().1 as u64,
@ -1602,7 +1610,12 @@ impl Receiver<AudioReceiver> {
audio_frame,
);
let (pts, duration) = self.calculate_audio_timestamp(element, &audio_frame);
let (pts, duration) = self
.calculate_audio_timestamp(element, &audio_frame)
.ok_or_else(|| {
gst_debug!(self.0.cat, obj: element, "Flushing, dropping buffer");
gst::FlowError::CustomError
})?;
// Simply read all video frames while flushing but don't copy them or anything to
// make sure that we're not accumulating anything here
@ -1624,7 +1637,7 @@ impl Receiver<AudioReceiver> {
&self,
element: &gst_base::BaseSrc,
audio_frame: &AudioFrame,
) -> (gst::ClockTime, gst::ClockTime) {
) -> Option<(gst::ClockTime, gst::ClockTime)> {
let duration = gst::SECOND
.mul_div_floor(
audio_frame.no_samples() as u64,