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vaapidecode: intersect filter from query caps

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According to documentation[1] when receiving a GST_QUERY_CAPS
the return value should be all formats that this elements supports,
taking into account limitations of peer elements further downstream
or upstream, sorted by order of preference, highest preference first.

This patch add those limitations intersecting with the received
filter in the query. Also takes into account the already negotiated
caps. Also adds the processing of the query on the SRC pad.

1. http://gstreamer.freedesktop.org/data/doc/gstreamer/head/pwg/html/section-nego-getcaps.html

https://bugzilla.gnome.org/show_bug.cgi?id=744406
This commit is contained in:
Víctor Manuel Jáquez Leal 2015-02-18 13:36:16 +02:00 committed by Sreerenj Balachandran
parent 671b1ea305
commit 7ca0591759
1 changed files with 52 additions and 4 deletions
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50
gst/vaapi/gstvaapidecode.c
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@ -990,7 +990,24 @@ gst_vaapidecode_query(GST_PAD_QUERY_FUNCTION_ARGS)
switch (GST_QUERY_TYPE(query)) {
#if GST_CHECK_VERSION(1,0,0)
case GST_QUERY_CAPS: {
GstCaps * const caps = gst_vaapidecode_get_caps(pad);
GstCaps *filter, *caps = NULL;
gst_query_parse_caps(query, &filter);
if (!decode->sinkpad_caps)
caps = gst_vaapidecode_get_caps(pad);
else
caps = gst_caps_ref(decode->sinkpad_caps);
if (filter) {
GstCaps *tmp = caps;
caps = gst_caps_intersect_full(filter, tmp,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref(tmp);
}
GST_DEBUG_OBJECT(decode, "Returning sink caps %" GST_PTR_FORMAT,
caps);
gst_query_set_caps_result(query, caps);
gst_caps_unref(caps);
res = TRUE;
@ -1003,9 +1020,40 @@ gst_vaapidecode_query(GST_PAD_QUERY_FUNCTION_ARGS)
break;
}
}
else {
switch (GST_QUERY_TYPE(query)) {
#if GST_CHECK_VERSION(1,0,0)
case GST_QUERY_CAPS: {
GstCaps *filter, *caps = NULL;
gst_query_parse_caps(query, &filter);
if (!decode->srcpad_caps)
caps = gst_pad_get_pad_template_caps(pad);
else
caps = gst_caps_ref(decode->srcpad_caps);
if (filter) {
GstCaps *tmp = caps;
caps = gst_caps_intersect_full(filter, tmp,
GST_CAPS_INTERSECT_FIRST);
gst_caps_unref(tmp);
}
GST_DEBUG_OBJECT(decode, "Returning src caps %" GST_PTR_FORMAT,
caps);
gst_query_set_caps_result(query, caps);
gst_caps_unref(caps);
res = TRUE;
break;
}
#endif
default:
res = GST_PAD_QUERY_FUNCTION_CALL(plugin->srcpad_query, pad,
parent, query);
break;
}
}
gst_object_unref(decode);
return res;