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capsfilter: Only remember previous filter caps if they were actually used for something

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If nobody ever saw the previous filter caps, nothing could've negotiated with
them and we can just pretend they never existed at all.
This commit is contained in:
Sebastian Dröge 2015-07-28 12:19:04 +03:00
parent 4e2eb93f04
commit a30c4cf721
2 changed files with 8 additions and 2 deletions
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9
plugins/elements/gstcapsfilter.c
View file

@ -168,6 +168,7 @@ gst_capsfilter_init (GstCapsFilter * filter)
gst_base_transform_set_gap_aware (trans, TRUE);
gst_base_transform_set_prefer_passthrough (trans, FALSE);
filter->filter_caps = gst_caps_new_any ();
filter->filter_caps_used = FALSE;
filter->caps_change_mode = DEFAULT_CAPS_CHANGE_MODE;
}
@ -193,8 +194,8 @@ gst_capsfilter_set_property (GObject * object, guint prop_id,
GST_OBJECT_LOCK (capsfilter);
old_caps = capsfilter->filter_caps;
capsfilter->filter_caps = new_caps;
if (old_caps
&& capsfilter->caps_change_mode ==
if (old_caps && capsfilter->filter_caps_used &&
capsfilter->caps_change_mode ==
GST_CAPS_FILTER_CAPS_CHANGE_MODE_DELAYED) {
capsfilter->previous_caps =
g_list_prepend (capsfilter->previous_caps, gst_caps_ref (old_caps));
@ -204,6 +205,7 @@ gst_capsfilter_set_property (GObject * object, guint prop_id,
(GDestroyNotify) gst_caps_unref);
capsfilter->previous_caps = NULL;
}
capsfilter->filter_caps_used = FALSE;
GST_OBJECT_UNLOCK (capsfilter);
gst_caps_unref (old_caps);
@ -278,6 +280,7 @@ gst_capsfilter_transform_caps (GstBaseTransform * base,
GST_OBJECT_LOCK (capsfilter);
filter_caps = gst_caps_ref (capsfilter->filter_caps);
capsfilter->filter_caps_used = TRUE;
caps_change_mode = capsfilter->caps_change_mode;
GST_OBJECT_UNLOCK (capsfilter);
@ -332,6 +335,7 @@ gst_capsfilter_accept_caps (GstBaseTransform * base,
GST_OBJECT_LOCK (capsfilter);
filter_caps = gst_caps_ref (capsfilter->filter_caps);
capsfilter->filter_caps_used = TRUE;
GST_OBJECT_UNLOCK (capsfilter);
ret = gst_caps_can_intersect (caps, filter_caps);
@ -555,6 +559,7 @@ done:
if (!l && gst_caps_can_intersect (caps, filter->filter_caps)) {
g_list_free_full (filter->previous_caps, (GDestroyNotify) gst_caps_unref);
filter->previous_caps = NULL;
filter->filter_caps_used = TRUE;
}
GST_OBJECT_UNLOCK (filter);
}

1
plugins/elements/gstcapsfilter.h
View file

@ -58,6 +58,7 @@ struct _GstCapsFilter {
GstBaseTransform trans;
GstCaps *filter_caps;
gboolean filter_caps_used;
GstCapsFilterCapsChangeMode caps_change_mode;
GList *pending_events;