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adaptivedemux: start/stop the manifest update loop on liveness or periodic update changes

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Scenario:
A manifest starts out in live mode but then the recording is finalized
and a subsequent update changes the state to a non-live manifest when
the server has finished recording/transcoding/whatever with the full
list of fragments.

Without this patch, the manifest update task is never stopped on the
live->non-live transition and will busy loop, burning through one CPU
core.

https://bugzilla.gnome.org/show_bug.cgi?id=786275
This commit is contained in:
Matthew Waters 2017-08-14 21:33:51 +10:00
parent df4c6385aa
commit cbf4a44426
1 changed files with 14 additions and 0 deletions
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14
gst-libs/gst/adaptivedemux/gstadaptivedemux.c
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@ -2027,6 +2027,7 @@ gst_adaptive_demux_stop_manifest_update_task (GstAdaptiveDemux * demux)
gst_task_stop (demux->priv->updates_task);
g_mutex_lock (&demux->priv->updates_timed_lock);
GST_DEBUG_OBJECT (demux, "requesting stop of the manifest update task");
demux->priv->stop_updates_task = TRUE;
g_cond_signal (&demux->priv->updates_timed_cond);
g_mutex_unlock (&demux->priv->updates_timed_lock);
@ -2045,6 +2046,7 @@ gst_adaptive_demux_start_manifest_update_task (GstAdaptiveDemux * demux)
g_mutex_unlock (&demux->priv->updates_timed_lock);
/* Task to periodically update the manifest */
if (demux_class->requires_periodical_playlist_update (demux)) {
GST_DEBUG_OBJECT (demux, "requesting start of the manifest update task");
gst_task_start (demux->priv->updates_task);
}
}
@ -4361,6 +4363,18 @@ gst_adaptive_demux_update_manifest (GstAdaptiveDemux * demux)
GST_DEBUG_OBJECT (demux,
"Duration unknown, can not send the duration message");
}
/* If a manifest changes it's liveness or periodic updateness, we need
* to start/stop the manifest update task appropriately */
/* Keep this condition in sync with the one in
* gst_adaptive_demux_start_manifest_update_task()
*/
if (gst_adaptive_demux_is_live (demux) &&
klass->requires_periodical_playlist_update (demux)) {
gst_adaptive_demux_start_manifest_update_task (demux);
} else {
gst_adaptive_demux_stop_manifest_update_task (demux);
}
}
return ret;