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rtsp-media: update expected_async_done during suspend

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Set expected_async_done to FALSE in default_suspend() if a state change
occurs and the return value from set_target_state() is something other
than GST_STATE_CHANGE_ASYNC.

Without this change there is a risk that expected_async_done will be
TRUE even though no asynchronous state change is taking place. This
could happen if the pipeline is set to PAUSED using
media_set_pipeline_state_locked(), an asynchronous state change starts
and then the media is suspended (which could result in a state change,
aborting the asynchronous state change). If the media is suspended
before the asynchronous state change ends then expected_async_done will
be TRUE but no asynchronous state change is taking place.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-rtsp-server/-/merge_requests/123>
This commit is contained in:
Ludvig Rappe 2020-05-04 13:43:00 +02:00 committed by GStreamer Merge Bot
parent ba7d568bb3
commit 0526a5c9bb
1 changed files with 7 additions and 1 deletions
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8
gst/rtsp-server/rtsp-media.c
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@ -4444,7 +4444,7 @@ static gboolean
default_suspend (GstRTSPMedia * media) default_suspend (GstRTSPMedia * media)
{ {
GstRTSPMediaPrivate *priv = media->priv; GstRTSPMediaPrivate *priv = media->priv;
GstStateChangeReturn ret; GstStateChangeReturn ret = GST_STATE_CHANGE_FAILURE;
switch (priv->suspend_mode) { switch (priv->suspend_mode) {
case GST_RTSP_SUSPEND_MODE_NONE: case GST_RTSP_SUSPEND_MODE_NONE:
@ -4472,6 +4472,12 @@ default_suspend (GstRTSPMedia * media)
break; break;
} }
/* If we use any suspend mode that changes the state then we must update
* expected_async_done, since we might not be doing an asyncronous state
* change anymore. */
if (ret != GST_STATE_CHANGE_FAILURE && ret != GST_STATE_CHANGE_ASYNC)
priv->expected_async_done = FALSE;
return TRUE; return TRUE;
/* ERRORS */ /* ERRORS */