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videorate: Update for negotiation related API changes

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This commit is contained in:
Sebastian Dröge 2011-05-16 12:01:14 +02:00
parent 7330318e2f
commit e21ec369f0
1 changed files with 38 additions and 20 deletions
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52
gst/videorate/gstvideorate.c
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@ -200,7 +200,7 @@ gst_video_rate_class_init (GstVideoRateClass * klass)
/* return the caps that can be used on out_pad given in_caps on in_pad */
static gboolean
gst_video_rate_transformcaps (GstPad * in_pad, GstCaps * in_caps,
GstPad * out_pad, GstCaps ** out_caps)
GstPad * out_pad, GstCaps ** out_caps, GstCaps * filter)
{
GstCaps *intersect;
const GstCaps *in_templ;
@ -209,7 +209,8 @@ gst_video_rate_transformcaps (GstPad * in_pad, GstCaps * in_caps,
GSList *iter;
in_templ = gst_pad_get_pad_template_caps (in_pad);
intersect = gst_caps_intersect (in_caps, in_templ);
intersect =
gst_caps_intersect_full (in_caps, in_templ, GST_CAPS_INTERSECT_FIRST);
/* all possible framerates are allowed */
for (i = 0; i < gst_caps_get_size (intersect); i++) {
@ -233,13 +234,21 @@ gst_video_rate_transformcaps (GstPad * in_pad, GstCaps * in_caps,
}
g_slist_free (extra_structures);
if (filter) {
GstCaps *tmp;
tmp = gst_caps_intersect_full (filter, intersect, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (intersect);
intersect = tmp;
}
*out_caps = intersect;
return TRUE;
}
static GstCaps *
gst_video_rate_getcaps (GstPad * pad)
gst_video_rate_getcaps (GstPad * pad, GstCaps * filter)
{
GstVideoRate *videorate;
GstPad *otherpad;
@ -251,15 +260,30 @@ gst_video_rate_getcaps (GstPad * pad)
videorate->srcpad;
/* we can do what the peer can */
caps = gst_pad_peer_get_caps (otherpad);
caps = gst_pad_peer_get_caps (otherpad, filter);
if (caps) {
GstCaps *transform;
GstCaps *transform, *intersect;
gst_video_rate_transformcaps (otherpad, caps, pad, &transform);
gst_video_rate_transformcaps (otherpad, caps, pad, &transform, filter);
/* Now prefer the downstream caps if possible */
intersect =
gst_caps_intersect_full (caps, transform, GST_CAPS_INTERSECT_FIRST);
if (!gst_caps_is_empty (intersect)) {
gst_caps_append (intersect, transform);
gst_caps_unref (caps);
caps = intersect;
} else {
gst_caps_unref (intersect);
caps = transform;
}
} else {
/* no peer, our padtemplate is enough then */
if (filter)
caps =
gst_caps_intersect_full (filter, gst_pad_get_pad_template_caps (pad),
GST_CAPS_INTERSECT_FIRST);
else
caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
}
@ -313,27 +337,20 @@ gst_video_rate_setcaps (GstPad * pad, GstCaps * caps)
ret = TRUE;
} else {
GstCaps *peercaps;
GstCaps *transform = NULL;
ret = FALSE;
/* see how we can transform the input caps */
if (!gst_video_rate_transformcaps (pad, caps, otherpad, &transform))
if (!gst_video_rate_transformcaps (pad, caps, otherpad, &transform, NULL))
goto no_transform;
/* see what the peer can do */
peercaps = gst_pad_get_caps (opeer);
GST_DEBUG_OBJECT (opeer, "icaps %" GST_PTR_FORMAT, peercaps);
GST_DEBUG_OBJECT (videorate, "transform %" GST_PTR_FORMAT, transform);
/* filter against our possibilities */
caps = gst_caps_intersect (peercaps, transform);
gst_caps_unref (peercaps);
gst_caps_unref (transform);
/* see what the peer can do */
caps = gst_pad_get_caps (opeer, transform);
GST_DEBUG_OBJECT (videorate, "intersect %" GST_PTR_FORMAT, caps);
GST_DEBUG_OBJECT (opeer, "icaps %" GST_PTR_FORMAT, caps);
/* could turn up empty, due to e.g. colorspace etc */
if (gst_caps_get_size (caps) == 0) {
@ -342,6 +359,7 @@ gst_video_rate_setcaps (GstPad * pad, GstCaps * caps)
}
/* take first possibility */
caps = gst_caps_make_writable (caps);
gst_caps_truncate (caps);
structure = gst_caps_get_structure (caps, 0);