mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-06-09 09:49:22 +00:00
fallbacksrc: Differentiate between fallback and restart timeout
This also fixes the bug that the source wouldn't be restarted another time if we switched to the fallback stream before and didn't at least shortly switch to the normal stream. There was no timeout for this. Based on a patch by Mathieu Duponchelle <mathieu@centricular.com>
This commit is contained in:
Sebastian Dröge
parent
f7fc5bb0a3
commit
44ad0a2f52
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@ -43,6 +43,7 @@ struct Settings {
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source: Option<gst::Element>,
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fallback_uri: Option<String>,
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timeout: u64,
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restart_timeout: u64,
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retry_timeout: u64,
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}
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@ -55,6 +56,7 @@ impl Default for Settings {
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source: None,
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fallback_uri: None,
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timeout: 5 * gst::SECOND_VAL,
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restart_timeout: 5 * gst::SECOND_VAL,
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retry_timeout: 60 * gst::SECOND_VAL,
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}
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}
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@ -104,9 +106,8 @@ struct State {
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source_is_live: bool,
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source_pending_restart: bool,
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// For timing out the source if we have to wait some additional time
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// after fallbackswitch switched due to recent buffering activity
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source_pending_timeout: Option<gst::ClockId>,
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// For timing out the source and shutting it down to restart it
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source_restart_timeout: Option<gst::ClockId>,
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// For restarting the source after shutting it down
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source_pending_restart_timeout: Option<gst::ClockId>,
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// For failing completely if we didn't recover after the retry timeout
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@ -143,7 +144,7 @@ enum Status {
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Running,
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}
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static PROPERTIES: [subclass::Property; 8] = [
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static PROPERTIES: [subclass::Property; 9] = [
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subclass::Property("enable-audio", |name| {
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glib::ParamSpec::boolean(
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name,
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@ -194,6 +195,17 @@ static PROPERTIES: [subclass::Property; 8] = [
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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("restart-timeout", |name| {
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glib::ParamSpec::uint64(
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name,
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"Timeout",
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"Timeout for restarting an active source",
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0,
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std::u64::MAX,
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5 * gst::SECOND_VAL,
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glib::ParamFlags::READWRITE,
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)
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}),
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subclass::Property("retry-timeout", |name| {
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glib::ParamSpec::uint64(
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name,
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@ -342,6 +354,18 @@ impl ObjectImpl for FallbackSrc {
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);
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settings.timeout = new_value;
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}
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subclass::Property("restart-timeout", ..) => {
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let mut settings = self.settings.lock().unwrap();
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let new_value = value.get_some().expect("type checked upstream");
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gst_info!(
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CAT,
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obj: element,
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"Changing Restart Timeout from {:?} to {:?}",
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settings.restart_timeout,
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new_value,
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);
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settings.restart_timeout = new_value;
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}
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subclass::Property("retry-timeout", ..) => {
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let mut settings = self.settings.lock().unwrap();
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let new_value = value.get_some().expect("type checked upstream");
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@ -389,6 +413,10 @@ impl ObjectImpl for FallbackSrc {
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let settings = self.settings.lock().unwrap();
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Ok(settings.timeout.to_value())
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}
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subclass::Property("restart-timeout", ..) => {
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let settings = self.settings.lock().unwrap();
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Ok(settings.restart_timeout.to_value())
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}
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subclass::Property("retry-timeout", ..) => {
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let settings = self.settings.lock().unwrap();
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Ok(settings.retry_timeout.to_value())
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@ -424,7 +452,7 @@ impl ObjectImpl for FallbackSrc {
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}
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if state.buffering_percent < 100
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|| state.source_pending_timeout.is_some()
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|| state.source_restart_timeout.is_some()
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|| state.streams.is_none()
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|| (have_audio
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&& state
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@ -606,6 +634,8 @@ impl FallbackSrc {
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Ok(identity)
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})
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.expect("No clocksync or identity found");
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let queue = gst::ElementFactory::make("queue", Some("fallback_queue"))
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.expect("No queue found");
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input
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.add_many(&[
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@ -615,11 +645,18 @@ impl FallbackSrc {
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&videoscale,
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&imagefreeze,
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&clocksync,
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&queue,
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])
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.unwrap();
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gst::Element::link_many(&[&filesrc, &typefind]).unwrap();
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gst::Element::link_many(&[&videoconvert, &videoscale, &imagefreeze, &clocksync])
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.unwrap();
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gst::Element::link_many(&[
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&videoconvert,
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&videoscale,
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&imagefreeze,
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&clocksync,
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&queue,
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])
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.unwrap();
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filesrc
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.dynamic_cast_ref::<gst::URIHandler>()
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@ -708,7 +745,7 @@ impl FallbackSrc {
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})
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.unwrap();
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clocksync.get_static_pad("src").unwrap()
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queue.get_static_pad("src").unwrap()
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}
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None => {
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let videotestsrc =
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@ -893,7 +930,7 @@ impl FallbackSrc {
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source,
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source_is_live: false,
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source_pending_restart: false,
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source_pending_timeout: None,
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source_restart_timeout: None,
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source_pending_restart_timeout: None,
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source_retry_timeout: None,
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video_stream,
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@ -954,7 +991,7 @@ impl FallbackSrc {
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timeout.unschedule();
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}
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if let Some(timeout) = state.source_pending_timeout.take() {
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if let Some(timeout) = state.source_restart_timeout.take() {
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timeout.unschedule();
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}
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@ -1018,12 +1055,21 @@ impl FallbackSrc {
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"Source changed state successfully: {:?}",
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res
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);
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let mut state_guard = self.state.lock().unwrap();
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let state = state_guard.as_mut().expect("no state");
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// Remember if the source is live
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if transition == gst::StateChange::ReadyToPaused {
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let mut state_guard = self.state.lock().unwrap();
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let state = state_guard.as_mut().expect("no state");
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state.source_is_live = res == gst::StateChangeSuccess::NoPreroll;
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}
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if (state.source_is_live && transition == gst::StateChange::ReadyToPaused)
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|| (!state.source_is_live && transition == gst::StateChange::PausedToPlaying)
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{
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assert!(state.source_restart_timeout.is_none());
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self.schedule_source_restart_timeout(element, state, 0.into());
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}
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}
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}
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@ -1641,7 +1687,7 @@ impl FallbackSrc {
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}
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// Unschedule pending timeout, we're restarting now
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if let Some(timeout) = state.source_pending_timeout.take() {
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if let Some(timeout) = state.source_restart_timeout.take() {
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timeout.unschedule();
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}
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@ -1754,6 +1800,11 @@ impl FallbackSrc {
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state.source_pending_restart_timeout = None;
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state.buffering_percent = 100;
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state.last_buffering_update = None;
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if let Some(timeout) = state.source_restart_timeout.take() {
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gst_debug!(CAT, obj: element, "Unscheduling restart timeout");
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timeout.unschedule();
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}
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drop(state_guard);
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if let Some(old_source) = old_source {
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@ -1768,6 +1819,11 @@ impl FallbackSrc {
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let mut state_guard = src.state.lock().unwrap();
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let state = state_guard.as_mut().expect("no state");
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src.handle_source_error(element, state);
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} else {
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let mut state_guard = src.state.lock().unwrap();
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let state = state_guard.as_mut().expect("no state");
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assert!(state.source_restart_timeout.is_none());
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src.schedule_source_restart_timeout(element, state, 0.into());
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}
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});
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})
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@ -1776,6 +1832,122 @@ impl FallbackSrc {
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});
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}
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#[allow(clippy::block_in_if_condition_stmt)]
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fn schedule_source_restart_timeout(
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&self,
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element: &gst::Bin,
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state: &mut State,
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elapsed: gst::ClockTime,
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) {
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let clock = gst::SystemClock::obtain();
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let wait_time = clock.get_time()
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+ gst::ClockTime::from_nseconds(state.settings.restart_timeout)
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- elapsed;
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assert!(wait_time.is_some());
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gst_debug!(
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CAT,
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obj: element,
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"Scheduling source restart timeout for {}",
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wait_time,
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);
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let timeout = clock
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.new_single_shot_id(wait_time)
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.expect("can't create clock id");
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let element_weak = element.downgrade();
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timeout
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.wait_async(move |_clock, _time, _id| {
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let element = match element_weak.upgrade() {
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None => return,
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Some(element) => element,
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};
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element.call_async(move |element| {
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let src = FallbackSrc::from_instance(element);
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gst_debug!(CAT, obj: element, "Source restart timeout triggered");
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let mut state_guard = src.state.lock().unwrap();
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let state = match &mut *state_guard {
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None => {
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gst_debug!(CAT, obj: element, "Restarting source not needed anymore");
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return;
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}
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Some(state) => state,
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};
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state.source_restart_timeout = None;
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let mut have_audio = false;
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let mut have_video = false;
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if let Some(ref streams) = state.streams {
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for stream in streams.iter() {
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have_audio = have_audio
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|| stream.get_stream_type().contains(gst::StreamType::AUDIO);
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have_video = have_video
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|| stream.get_stream_type().contains(gst::StreamType::VIDEO);
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}
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}
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// If we have neither audio nor video (no streams yet), or active pad for the ones we have
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// is the fallback pad then restart the source now.
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if (!have_audio && !have_video)
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|| (have_audio
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&& state
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.audio_stream
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.as_ref()
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.and_then(|s| {
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s.switch
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.get_property("active-pad")
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.unwrap()
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.get::<gst::Pad>()
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.unwrap()
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})
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.map(|p| p.get_name() == "fallback_sink")
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.unwrap_or(true))
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|| (have_video
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&& state
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.video_stream
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.as_ref()
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.and_then(|s| {
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s.switch
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.get_property("active-pad")
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.unwrap()
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.get::<gst::Pad>()
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.unwrap()
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})
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.map(|p| p.get_name() == "fallback_sink")
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.unwrap_or(true))
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{
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// If we're not actively buffering right now let's restart the source
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if state
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.last_buffering_update
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.map(|i| {
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i.elapsed() >= Duration::from_nanos(state.settings.restart_timeout)
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})
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.unwrap_or(state.buffering_percent == 100)
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{
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gst_debug!(CAT, obj: element, "Not buffering, restarting source");
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src.handle_source_error(element, state);
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} else {
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gst_debug!(CAT, obj: element, "Buffering, restarting source later");
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let elapsed = state
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.last_buffering_update
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.map(|i| i.elapsed().as_nanos() as u64)
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.unwrap_or(0);
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src.schedule_source_restart_timeout(element, state, elapsed.into());
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}
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} else {
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gst_debug!(CAT, obj: element, "Restarting source not needed anymore");
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}
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});
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})
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.expect("Failed to wait async");
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state.source_restart_timeout = Some(timeout);
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}
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#[allow(clippy::block_in_if_condition_stmt)]
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fn handle_switch_active_pad_change(&self, element: &gst::Bin) {
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let mut state_guard = self.state.lock().unwrap();
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@ -1797,12 +1969,6 @@ impl FallbackSrc {
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}
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}
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// We will schedule a new one if needed below
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if let Some(timeout) = state.source_pending_timeout.take() {
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gst_debug!(CAT, obj: element, "Unscheduling pending timeout");
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timeout.unschedule();
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}
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// If we have neither audio nor video (no streams yet), or active pad for the ones we have
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// is the fallback pad then start the retry timeout unless it was started already.
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// Otherwise cancel the retry timeout.
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@ -1835,114 +2001,20 @@ impl FallbackSrc {
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.unwrap_or(true))
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{
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gst_warning!(CAT, obj: element, "Switched to fallback stream");
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// If we're not actively buffering right now let's restart the source
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if state
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.last_buffering_update
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.map(|i| i.elapsed() >= Duration::from_nanos(state.settings.timeout))
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.unwrap_or(state.buffering_percent == 100)
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{
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gst_debug!(CAT, obj: element, "Not buffering, restarting source");
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self.handle_source_error(element, state);
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} else {
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// Schedule another timeout after the last buffering activity
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let clock = gst::SystemClock::obtain();
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let diff = gst::ClockTime::from(
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state.settings.timeout.saturating_sub(
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state
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.last_buffering_update
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.map(|i| i.elapsed().as_nanos() as u64)
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.unwrap_or(state.settings.timeout),
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),
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);
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let wait_time = clock.get_time() + diff;
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assert!(wait_time.is_some());
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gst_debug!(CAT, obj: element, "Starting pending timeout for {}", diff);
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let timeout = clock
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.new_single_shot_id(wait_time)
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.expect("can't create clock id");
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let element_weak = element.downgrade();
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timeout
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.wait_async(move |_clock, _time, _id| {
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let element = match element_weak.upgrade() {
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None => return,
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Some(element) => element,
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};
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element.call_async(|element| {
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let src = FallbackSrc::from_instance(element);
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src.handle_switch_active_pad_change(element);
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});
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})
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.expect("failed to wait async");
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state.source_pending_timeout = Some(timeout);
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if state.source_restart_timeout.is_none() {
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self.schedule_source_restart_timeout(element, state, 0.into());
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}
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} else {
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gst_debug!(CAT, obj: element, "Switched to main stream");
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if let Some(timeout) = state.source_retry_timeout.take() {
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gst_debug!(CAT, obj: element, "Unscheduling retry timeout");
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timeout.unschedule();
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}
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if state.source_retry_timeout.is_none() {
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let clock = gst::SystemClock::obtain();
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let wait_time =
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clock.get_time() + gst::ClockTime::from(state.settings.retry_timeout);
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assert!(wait_time.is_some());
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gst_debug!(CAT, obj: element, "Starting retry timeout");
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let timeout = clock
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.new_single_shot_id(wait_time)
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.expect("can't create clock id");
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let element_weak = element.downgrade();
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timeout
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.wait_async(move |_clock, _time, _id| {
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let element = match element_weak.upgrade() {
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None => return,
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Some(element) => element,
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};
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element.call_async(|element| {
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let src = FallbackSrc::from_instance(element);
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let mut state_guard = src.state.lock().unwrap();
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let state = match &mut *state_guard {
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None => return,
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Some(ref mut state) => state,
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};
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if state.source_retry_timeout.take().is_none() {
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return;
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}
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if let Some(timeout) = state.source_pending_restart_timeout.take() {
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timeout.unschedule();
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}
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if let Some(timeout) = state.source_pending_timeout.take() {
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timeout.unschedule();
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}
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state.source_pending_restart = false;
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drop(state_guard);
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gst_element_warning!(
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element,
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gst::ResourceError::OpenRead,
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["Failed to start playback"]
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);
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gst_warning!(CAT, obj: element, "Retry timeout, finishing");
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for pad in element.get_src_pads() {
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element.call_async(move |_element| {
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pad.push_event(gst::event::Eos::new());
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});
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}
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});
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})
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.expect("failed to wait async");
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state.source_retry_timeout = Some(timeout);
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drop(state_guard);
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element.notify("status");
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if let Some(timeout) = state.source_restart_timeout.take() {
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gst_debug!(CAT, obj: element, "Unscheduling restart timeout");
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timeout.unschedule();
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}
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||||
} else if let Some(timeout) = state.source_retry_timeout.take() {
|
||||
gst_debug!(CAT, obj: element, "Unscheduling retry timeout");
|
||||
timeout.unschedule();
|
||||
|
||||
drop(state_guard);
|
||||
element.notify("status");
|
||||
|
|
|
|||
Loading…
Reference in a new issue