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basetransform: get template caps only once

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Get the template caps of the pads only once, avoids unecessary ref
and unrefs.
This commit is contained in:
Wim Taymans 2012-03-12 19:52:03 +01:00
parent 5e719a293a
commit 934ddcfcfe
1 changed files with 15 additions and 22 deletions
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37
libs/gst/base/gstbasetransform.c
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@ -646,21 +646,21 @@ gst_base_transform_query_caps (GstBaseTransform * trans, GstPad * pad,
{
GstPad *otherpad;
GstCaps *peercaps, *caps, *temp, *peerfilter = NULL;
GstCaps *templ;
GstCaps *templ, *otempl;
otherpad = (pad == trans->srcpad) ? trans->sinkpad : trans->srcpad;
templ = gst_pad_get_pad_template_caps (pad);
otempl = gst_pad_get_pad_template_caps (otherpad);
/* we can do what the peer can */
if (filter) {
GST_DEBUG_OBJECT (pad, "filter caps %" GST_PTR_FORMAT, filter);
/* filtered against our padtemplate on the other side */
templ = gst_pad_get_pad_template_caps (pad);
GST_DEBUG_OBJECT (pad, "our template %" GST_PTR_FORMAT, templ);
temp = gst_caps_intersect_full (filter, templ, GST_CAPS_INTERSECT_FIRST);
GST_DEBUG_OBJECT (pad, "intersected %" GST_PTR_FORMAT, temp);
gst_caps_unref (templ);
/* then see what we can transform this to */
peerfilter = gst_base_transform_transform_caps (trans,
@ -669,14 +669,12 @@ gst_base_transform_query_caps (GstBaseTransform * trans, GstPad * pad,
gst_caps_unref (temp);
/* and filter against the template of this pad */
templ = gst_pad_get_pad_template_caps (otherpad);
GST_DEBUG_OBJECT (pad, "our template %" GST_PTR_FORMAT, templ);
GST_DEBUG_OBJECT (pad, "our template %" GST_PTR_FORMAT, otempl);
/* We keep the caps sorted like the returned caps */
temp =
gst_caps_intersect_full (peerfilter, templ, GST_CAPS_INTERSECT_FIRST);
gst_caps_intersect_full (peerfilter, otempl, GST_CAPS_INTERSECT_FIRST);
GST_DEBUG_OBJECT (pad, "intersected %" GST_PTR_FORMAT, temp);
gst_caps_unref (peerfilter);
gst_caps_unref (templ);
peerfilter = temp;
}
@ -689,13 +687,11 @@ gst_base_transform_query_caps (GstBaseTransform * trans, GstPad * pad,
GST_DEBUG_OBJECT (pad, "peer caps %" GST_PTR_FORMAT, peercaps);
/* filtered against our padtemplate on the other side */
templ = gst_pad_get_pad_template_caps (otherpad);
GST_DEBUG_OBJECT (pad, "our template %" GST_PTR_FORMAT, templ);
temp = gst_caps_intersect_full (peercaps, templ, GST_CAPS_INTERSECT_FIRST);
GST_DEBUG_OBJECT (pad, "our template %" GST_PTR_FORMAT, otempl);
temp = gst_caps_intersect_full (peercaps, otempl, GST_CAPS_INTERSECT_FIRST);
GST_DEBUG_OBJECT (pad, "intersected %" GST_PTR_FORMAT, temp);
gst_caps_unref (templ);
} else {
temp = gst_pad_get_pad_template_caps (otherpad);
temp = gst_caps_ref (otempl);
}
/* then see what we can transform this to */
@ -708,13 +704,11 @@ gst_base_transform_query_caps (GstBaseTransform * trans, GstPad * pad,
if (peercaps) {
/* and filter against the template of this pad */
templ = gst_pad_get_pad_template_caps (pad);
GST_DEBUG_OBJECT (pad, "our template %" GST_PTR_FORMAT, templ);
/* We keep the caps sorted like the returned caps */
temp = gst_caps_intersect_full (caps, templ, GST_CAPS_INTERSECT_FIRST);
GST_DEBUG_OBJECT (pad, "intersected %" GST_PTR_FORMAT, temp);
gst_caps_unref (caps);
gst_caps_unref (templ);
caps = temp;
/* Now try if we can put the untransformed downstream caps first */
@ -727,14 +721,10 @@ gst_base_transform_query_caps (GstBaseTransform * trans, GstPad * pad,
} else {
gst_caps_unref (caps);
/* no peer or the peer can do anything, our padtemplate is enough then */
caps = gst_pad_get_pad_template_caps (pad);
if (filter) {
GstCaps *temp;
temp = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = temp;
caps = gst_caps_intersect_full (filter, templ, GST_CAPS_INTERSECT_FIRST);
} else {
caps = gst_caps_ref (templ);
}
}
@ -744,6 +734,9 @@ done:
if (peercaps)
gst_caps_unref (peercaps);
gst_caps_unref (templ);
gst_caps_unref (otempl);
return caps;
}