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glmixer: override the accept caps query in order to 'convert' capsfeatures

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Otherwise, it is only possible for the sink pads and the src pads to
have the exact same caps features.  We can convert from any feature
to another feature so support that.
This commit is contained in:
Matthew Waters 2014-10-23 23:55:48 +11:00
parent 340542edc7
commit 6687d39734
1 changed files with 30 additions and 0 deletions
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30
ext/gl/gstglmixer.c
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@ -267,6 +267,26 @@ context_error:
}
}
static gboolean
gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
GstCaps * caps)
{
gboolean ret;
GstCaps *template_caps;
GST_DEBUG_OBJECT (pad, "try accept caps of %" GST_PTR_FORMAT, caps);
template_caps = gst_pad_get_pad_template_caps (pad);
template_caps = gst_caps_make_writable (template_caps);
ret = gst_caps_can_intersect (caps, template_caps);
GST_DEBUG_OBJECT (pad, "%saccepted caps %" GST_PTR_FORMAT,
(ret ? "" : "not "), caps);
gst_caps_unref (template_caps);
return ret;
}
static gboolean
gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
GstQuery * query)
@ -277,6 +297,16 @@ gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ACCEPT_CAPS:
{
GstCaps *caps;
gst_query_parse_accept_caps (query, &caps);
ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
gst_query_set_accept_caps_result (query, ret);
ret = TRUE;
break;
}
case GST_QUERY_ALLOCATION:
{
GstQuery *decide_query = NULL;