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cea708mux: handle different timestamped inputs

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If different inputs have different framerates, then an input buffer may need
to be combined or split.  Account for that in the aggregate loop.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1942>
This commit is contained in:
Matthew Waters 2024-12-03 12:38:18 +11:00 committed by GStreamer Marge Bot
parent 00cb3fefe9
commit fe49837107
1 changed files with 10 additions and 22 deletions
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32
video/closedcaption/src/cea708mux/imp.rs
View file

@ -162,11 +162,6 @@ impl AggregatorImpl for Cea708Mux {
.expect("Not a Cea708MuxSinkPad?!")
}) {
let mut pad_state = pad.imp().pad_state.lock().unwrap();
// any data we currently have stored
let have_pending = pad_state
.pending_services
.values()
.any(|codes| !codes.is_empty());
if pad.is_eos() {
if pad_state.pending_buffer.is_some() {
@ -207,17 +202,10 @@ impl AggregatorImpl for Cea708Mux {
}
let duration = buffer.duration().unwrap_or(gst::ClockTime::ZERO);
let buffer_end_ts = buffer_start_ts + duration;
// allow a 1 second grace period before dropping data
if start_running_time.saturating_sub(buffer_end_ts) > gst::ClockTime::from_seconds(1) {
gst::warning!(CAT, obj = pad,
"Dropping buffer because start_running_time {} is more than 1s later than buffer_end_ts {}",
start_running_time.display(),
buffer_end_ts.display());
pad.drop_buffer();
if !have_pending {
need_data = true;
}
continue;
if start_running_time.saturating_sub(buffer_end_ts) > gst::ClockTime::ZERO {
// need to wait for the next input buffer which might need to be part of this
// output buffer.
need_data = true;
}
let Ok(mapped) = buffer.map_readable() else {
@ -242,6 +230,12 @@ impl AggregatorImpl for Cea708Mux {
cc_data[1] = 0xFF;
cc_data.extend(mapped.iter());
pad_state.ccp_parser.push(&cc_data).unwrap();
if let Some(cea608) = pad_state.ccp_parser.cea608() {
for pair in cea608 {
state.writer.push_cea608(*pair);
}
}
}
_ => unreachable!(),
}
@ -330,12 +324,6 @@ impl AggregatorImpl for Cea708Mux {
}
}
}
if let Some(cea608) = pad_state.ccp_parser.cea608() {
for pair in cea608 {
state.writer.push_cea608(*pair);
}
}
}
_ => (),
}