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subtitleoverlay: replace accept-caps with caps query

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Those accept caps are actually checking if downstream supports
some particular caps to check if it need to negotiate a different
format. Checking only the next element with accept-caps is not enough
to guarantee that it is supported.

Using a caps query makes it obtain the supported caps for downstream
as a whole instead of only the next element.
This commit is contained in:
Thiago Santos 2016-01-11 18:24:48 -03:00
parent 2f7cd8608a
commit 20f6af651b
1 changed files with 17 additions and 3 deletions
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20
gst/playback/gstsubtitleoverlay.c
View file

@ -157,6 +157,20 @@ unblock_subtitle (GstSubtitleOverlay * self)
}
}
static gboolean
pad_supports_caps (GstPad * pad, GstCaps * caps)
{
GstCaps *pad_caps;
gboolean ret = FALSE;
pad_caps = gst_pad_query_caps (pad, NULL);
if (gst_caps_can_intersect (caps, pad_caps))
ret = TRUE;
gst_caps_unref (pad_caps);
return ret;
}
static void
gst_subtitle_overlay_finalize (GObject * object)
{
@ -1063,7 +1077,7 @@ _pad_blocked_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
GstPad *target =
gst_ghost_pad_get_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad));
if (target && gst_pad_query_accept_caps (target, subcaps)) {
if (target && pad_supports_caps (target, subcaps)) {
GST_DEBUG_OBJECT (pad, "Target accepts caps");
gst_object_unref (target);
@ -1673,7 +1687,7 @@ gst_subtitle_overlay_video_sink_setcaps (GstSubtitleOverlay * self,
GST_SUBTITLE_OVERLAY_LOCK (self);
if (!target || !gst_pad_query_accept_caps (target, caps)) {
if (!target || !pad_supports_caps (target, caps)) {
GST_DEBUG_OBJECT (target, "Target did not accept caps -- reconfiguring");
block_subtitle (self);
@ -1809,7 +1823,7 @@ gst_subtitle_overlay_subtitle_sink_setcaps (GstSubtitleOverlay * self,
GST_SUBTITLE_OVERLAY_LOCK (self);
gst_caps_replace (&self->subcaps, caps);
if (target && gst_pad_query_accept_caps (target, caps)) {
if (target && pad_supports_caps (target, caps)) {
GST_DEBUG_OBJECT (self, "Target accepts caps");
GST_SUBTITLE_OVERLAY_UNLOCK (self);
goto out;