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transcriberbin: take synthesis latency into account

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and factor out a method to calculate the element's internal latency, to
be shared with the code for calculating the size of the passthrough
queues.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1930>
This commit is contained in:
Mathieu Duponchelle 2024-11-29 14:50:07 +01:00 committed by GStreamer Marge Bot
parent a71fd35ebf
commit 01b3e2a8f2
1 changed files with 20 additions and 21 deletions
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39
video/closedcaption/src/transcriberbin/imp.rs
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@ -628,10 +628,7 @@ impl TranscriberBin {
state.ccmux_filter.set_property("caps", ccmux_caps);
let max_size_time = settings.latency
+ settings.translate_latency
+ settings.accumulate_time
+ CEAX08MUX_LATENCY;
let max_size_time = self.our_latency(state, &settings);
gst::debug!(
CAT,
@ -1377,21 +1374,8 @@ impl TranscriberBin {
ret
}
#[allow(clippy::single_match)]
fn src_query(&self, pad: &gst::Pad, query: &mut gst::QueryRef) -> bool {
use gst::QueryViewMut;
gst::log!(CAT, obj = pad, "Handling query {:?}", query);
match query.view_mut() {
QueryViewMut::Latency(q) => {
let state = self.state.lock().unwrap();
if let Some(state) = state.as_ref() {
let upstream_min = self.query_upstream_latency(state);
let synthesis_min = self.synthesis_latency(state);
let settings = self.settings.lock().unwrap();
let min = upstream_min
+ synthesis_min
fn our_latency(&self, state: &State, settings: &Settings) -> gst::ClockTime {
self.synthesis_latency(state)
+ settings.latency
+ settings.accumulate_time
+ CEAX08MUX_LATENCY
@ -1404,7 +1388,22 @@ impl TranscriberBin {
.mul_div_floor(f.denom() as u64, f.numer() as u64)
.unwrap()
})
.unwrap_or(gst::ClockTime::from_seconds(0));
.unwrap_or(gst::ClockTime::from_seconds(0))
}
#[allow(clippy::single_match)]
fn src_query(&self, pad: &gst::Pad, query: &mut gst::QueryRef) -> bool {
use gst::QueryViewMut;
gst::log!(CAT, obj = pad, "Handling query {:?}", query);
match query.view_mut() {
QueryViewMut::Latency(q) => {
let state = self.state.lock().unwrap();
if let Some(state) = state.as_ref() {
let upstream_min = self.query_upstream_latency(state);
let min =
upstream_min + self.our_latency(state, &self.settings.lock().unwrap());
gst::debug!(CAT, imp = self, "calculated latency: {}", min);