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glmixer: override the 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 2014-10-24 00:35:22 +11:00
parent 6687d39734
commit 33584480b5
1 changed files with 42 additions and 0 deletions
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42
ext/gl/gstglmixer.c
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@ -287,6 +287,37 @@ gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
return ret;
}
static GstCaps *
gst_gl_mixer_pad_sink_getcaps (GstPad * pad, GstGLMixer * mix, GstCaps * filter)
{
GstCaps *srccaps;
GstCaps *template_caps;
GstCaps *filtered_caps;
GstCaps *returned_caps;
gboolean had_current_caps = TRUE;
template_caps = gst_pad_get_pad_template_caps (pad);
srccaps = gst_pad_get_current_caps (pad);
if (srccaps == NULL) {
had_current_caps = FALSE;
srccaps = template_caps;
}
filtered_caps = srccaps;
if (filter)
filtered_caps = gst_caps_intersect (srccaps, filter);
returned_caps = gst_caps_intersect (filtered_caps, template_caps);
gst_caps_unref (srccaps);
if (filter)
gst_caps_unref (filtered_caps);
if (had_current_caps)
gst_caps_unref (template_caps);
return returned_caps;
}
static gboolean
gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
GstQuery * query)
@ -297,6 +328,17 @@ gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
ret = TRUE;
break;
}
case GST_QUERY_ACCEPT_CAPS:
{
GstCaps *caps;