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Revert "Revert "decodebin2: Do a subset check before actually using a factory""

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This reverts commit 5f5d832a3b.
This commit is contained in:
Sebastian Dröge 2011-09-08 14:42:13 +02:00
parent 0f654f3feb
commit 21bc8ddcb7
1 changed files with 40 additions and 0 deletions
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40
gst/playback/gstdecodebin2.c
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@ -1741,6 +1741,46 @@ connect_pad (GstDecodeBin * dbin, GstElement * src, GstDecodePad * dpad,
/* Remove selected factory from the list. */
g_value_array_remove (factories, 0);
/* Check if the caps are really supported by the factory. The
* factory list is non-empty-subset filtered while caps
* are only accepted by a pad if they are a subset of the
* pad caps.
*
* FIXME: Only do this for fixed caps here. Non-fixed caps
* can happen if a Parser/Converter was autoplugged before
* this. We then assume that it will be able to convert to
* everything that the decoder would want.
*
* A subset check will fail here because the parser caps
* will be generic and while the decoder will only
* support a subset of the parser caps.
*/
if (gst_caps_is_fixed (caps)) {
const GList *templs;
gboolean skip = FALSE;
templs = gst_element_factory_get_static_pad_templates (factory);
while (templs) {
GstStaticPadTemplate *templ = (GstStaticPadTemplate *) templs->data;
if (templ->direction == GST_PAD_SINK) {
GstCaps *templcaps = gst_static_caps_get (&templ->static_caps);
if (!gst_caps_is_subset (caps, templcaps)) {
gst_caps_unref (templcaps);
skip = TRUE;
break;
}
gst_caps_unref (templcaps);
}
templs = g_list_next (templs);
}
if (skip)
continue;
}
/* If the factory is for a parser we first check if the factory
* was already used for the current chain. If it was used already
* we would otherwise create an infinite loop here because the