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closedcaption: st2038ancdemux: Send gap events for inactive streams

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1777>
This commit is contained in:
Sebastian Dröge 2024-09-18 17:37:32 +03:00 committed by GStreamer Marge Bot
parent 593cb6c7fc
commit 5864a1368f
1 changed files with 57 additions and 1 deletions
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58
video/closedcaption/src/st2038ancdemux/imp.rs
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@ -78,6 +78,8 @@ impl St2038AncDemux {
) -> Result<gst::FlowSuccess, gst::FlowError> {
let mut state = self.state.borrow_mut();
gst::trace!(CAT, imp = self, "Handling buffer {buffer:?}");
let ts = buffer.dts_or_pts();
let running_time = state.segment.to_running_time(ts);
@ -164,7 +166,14 @@ impl St2038AncDemux {
}
};
stream.last_used = running_time;
if let Some(running_time) = running_time {
if stream
.last_used
.map_or(true, |last_used| last_used < running_time)
{
stream.last_used = Some(running_time);
}
}
let Ok(mut sub_buffer) =
buffer.copy_region(gst::BufferCopyFlags::MEMORY, start_offset..end_offset)
@ -193,6 +202,49 @@ impl St2038AncDemux {
}
}
let mut late_pads = Vec::new();
if let Some(running_time) = running_time {
let ts = ts.unwrap();
let State {
ref mut streams,
ref segment,
..
} = &mut *state;
for stream in streams.values_mut() {
let Some(last_used) = stream.last_used else {
continue;
};
if gst::ClockTime::absdiff(last_used, running_time)
> gst::ClockTime::from_mseconds(500)
{
let Some(timestamp) = segment.position_from_running_time_full(last_used)
else {
continue;
};
let timestamp = timestamp.positive().unwrap_or(ts);
let duration = ts.checked_sub(timestamp);
gst::trace!(
CAT,
obj = stream.pad,
"Advancing late stream from {last_used} to {running_time}"
);
late_pads.push((
stream.pad.clone(),
gst::event::Gap::builder(timestamp)
.duration(duration)
.build(),
));
stream.last_used = Some(running_time);
}
}
}
drop(state);
let main_flow = self.srcpad.push(sub_buffer);
state = self.state.borrow_mut();
@ -201,6 +253,10 @@ impl St2038AncDemux {
.flow_combiner
.update_pad_flow(&self.srcpad, main_flow)?;
for (pad, event) in late_pads {
let _ = pad.push_event(event);
}
slice = &slice[anc_hdr.len..];
}