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videomixer: filter caps returned from downstream with our pad template.

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This commit is contained in:
Edward Hervey 2010-06-01 20:45:29 +02:00
parent bfaeffcfd0
commit 59dcdc37a0
1 changed files with 8 additions and 9 deletions
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17
gst/videomixer/videomixer.c
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@ -380,6 +380,7 @@ gst_videomixer_pad_sink_getcaps (GstPad * pad)
GstVideoMixer *mix;
GstVideoMixerPad *mixpad;
GstCaps *res = NULL;
GstCaps *tmp;
int ncaps, i;
GstStructure *st;
@ -389,13 +390,18 @@ gst_videomixer_pad_sink_getcaps (GstPad * pad)
if (!mixpad)
goto beach;
res = gst_pad_peer_get_caps (mix->srcpad);
if (G_UNLIKELY (res == NULL)) {
tmp = gst_pad_peer_get_caps (mix->srcpad);
if (G_UNLIKELY (tmp == NULL)) {
/* If no peer, then return template */
res = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
goto beach;
}
/* Intersect with template caps, downstream might be returning formats
* or width/height/framerate/par combinations we don't handle */
res = gst_caps_intersect (tmp, gst_pad_get_pad_template_caps (pad));
gst_caps_unref (tmp);
ncaps = gst_caps_get_size (res);
/* This Upstream can only produce:
@ -418,13 +424,6 @@ gst_videomixer_pad_sink_getcaps (GstPad * pad)
G_MAXINT32, 1, "pixel-aspect-ratio", GST_TYPE_FRACTION, mix->par_n,
mix->par_d, NULL);
}
} else {
GstCaps *tmp;
/* If we don't have configured values, just intersect with our
* pad template */
tmp = res;
res = gst_caps_intersect (res, gst_pad_get_pad_template_caps (pad));
gst_caps_unref (tmp);
}
GST_VIDEO_MIXER_STATE_UNLOCK (mix);