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Make sure we don't set caps that violate the (app)filter

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Original commit message from CVS:
Make sure we don't set caps that violate the (app)filter
This commit is contained in:
Wim Taymans 2002-12-06 20:03:57 +00:00
parent a58c54c2ee
commit 0539bc2b87
1 changed files with 23 additions and 6 deletions
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29
gst/gstpad.c
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@ -1233,7 +1233,7 @@ gst_pad_get_ghost_pad_list (GstPad *pad)
static GstPadConnectReturn
gst_pad_try_set_caps_func (GstRealPad *pad, GstCaps *caps, gboolean notify)
{
GstCaps *oldcaps;
GstCaps *oldcaps, *allowed = NULL;
GstPadTemplate *template;
GstElement *parent = GST_PAD_PARENT (pad);
@ -1251,16 +1251,33 @@ gst_pad_try_set_caps_func (GstRealPad *pad, GstCaps *caps, gboolean notify)
GST_INFO (GST_CAT_CAPS, "trying to set caps %p on pad %s:%s",
caps, GST_DEBUG_PAD_NAME (pad));
/* first see if we have to check against a filter */
if (!(allowed = GST_RPAD_FILTER (pad))) {
/* no filter, make sure we check against the padtemplate then */
if ((template = gst_pad_get_pad_template (GST_PAD_CAST (pad)))) {
allowed = gst_pad_template_get_caps (template);
}
}
if ((template = gst_pad_get_pad_template (GST_PAD_CAST (pad)))) {
if (!gst_caps_intersect (caps, gst_pad_template_get_caps (template))) {
GST_INFO (GST_CAT_CAPS, "caps did not intersect with %s:%s's padtemplate",
/* do we have to check the caps against something? */
if (allowed) {
GstCaps *intersection;
/* check against calculated caps */
intersection = gst_caps_intersect (caps, allowed);
/* oops, empty intersection, caps don"t have anything in common */
if (!intersection) {
GST_INFO (GST_CAT_CAPS, "caps did not intersect with %s:%s's allowed caps",
GST_DEBUG_PAD_NAME (pad));
gst_caps_debug (caps, "caps themselves (attemped to set)");
gst_caps_debug (gst_pad_template_get_caps (template),
"pad template caps that did not agree with caps");
gst_caps_debug (allowed,
"allowed caps that did not agree with caps");
return GST_PAD_CONNECT_REFUSED;
}
/* caps checks out fine, we can unref the intersection now */
gst_caps_unref (intersection);
/* given that the caps are fixed, we know that their intersection with the
* padtemplate caps is the same as caps itself */
}