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basetransform: only check caps_is_fixed() if they changed

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The previous code could call gst_caps_is_fixed() for the same caps many times.
This commit is contained in:
Stefan Kost 2009-07-22 09:24:55 +03:00
parent baaf7e5319
commit cfacd2cbb3
1 changed files with 15 additions and 5 deletions
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20
libs/gst/base/gstbasetransform.c
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@ -772,6 +772,7 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
GstPad *otherpad, *otherpeer;
GstCaps *othercaps;
gboolean peer_checked = FALSE;
gboolean is_fixed;
/* caps must be fixed here, this is a programming error if it's not */
g_return_val_if_fail (gst_caps_is_fixed (caps), NULL);
@ -811,7 +812,8 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
* is by attempting passthrough if the othercaps are a superset of caps. */
/* FIXME. maybe the caps is not fixed because it has multiple structures of
* fixed caps */
if (!gst_caps_is_fixed (othercaps)) {
is_fixed = gst_caps_is_fixed (othercaps);
if (!is_fixed) {
GstCaps *temp;
GST_DEBUG_OBJECT (trans,
@ -832,6 +834,7 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
* caps and work with the passthrough caps */
gst_caps_unref (othercaps);
othercaps = gst_caps_ref (caps);
is_fixed = TRUE;
/* mark that we checked othercaps with the peer, this
* makes sure we don't call accept_caps again with these same
* caps */
@ -844,6 +847,7 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
GST_DEBUG_OBJECT (trans, "no peer, doing passthrough");
gst_caps_unref (othercaps);
othercaps = gst_caps_ref (caps);
is_fixed = TRUE;
}
}
gst_caps_unref (temp);
@ -852,7 +856,7 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
/* second attempt at fixation is done by intersecting with
* the peer caps */
if (!gst_caps_is_fixed (othercaps) && otherpeer) {
if (!is_fixed && otherpeer) {
/* intersect against what the peer can do */
GstCaps *peercaps;
GstCaps *intersect;
@ -866,6 +870,8 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
othercaps = intersect;
peer_checked = FALSE;
is_fixed = gst_caps_is_fixed (othercaps);
GST_DEBUG_OBJECT (trans,
"filtering against peer yields %" GST_PTR_FORMAT, othercaps);
}
@ -875,7 +881,7 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
/* third attempt at fixation, call the fixate vmethod and
* ultimately call the pad fixate function. */
if (!gst_caps_is_fixed (othercaps)) {
if (!is_fixed) {
GstCaps *temp;
GST_DEBUG_OBJECT (trans,
@ -898,17 +904,20 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
" on pad %s:%s using fixate_caps vmethod", othercaps, caps,
GST_DEBUG_PAD_NAME (otherpad));
klass->fixate_caps (trans, GST_PAD_DIRECTION (pad), caps, othercaps);
is_fixed = gst_caps_is_fixed (othercaps);
}
/* if still not fixed, no other option but to let the default pad fixate
* function do its job */
if (!gst_caps_is_fixed (othercaps)) {
if (!is_fixed) {
GST_DEBUG_OBJECT (trans, "trying to fixate %" GST_PTR_FORMAT
" on pad %s:%s using gst_pad_fixate_caps", othercaps,
GST_DEBUG_PAD_NAME (otherpad));
gst_pad_fixate_caps (otherpad, othercaps);
is_fixed = gst_caps_is_fixed (othercaps);
}
GST_DEBUG_OBJECT (trans, "after fixating %" GST_PTR_FORMAT, othercaps);
} else {
GST_DEBUG ("caps are fixed");
/* else caps are fixed but the subclass may want to add fields */
if (klass->fixate_caps) {
othercaps = gst_caps_make_writable (othercaps);
@ -919,11 +928,12 @@ gst_base_transform_find_transform (GstBaseTransform * trans, GstPad * pad,
GST_DEBUG_PAD_NAME (otherpad));
klass->fixate_caps (trans, GST_PAD_DIRECTION (pad), caps, othercaps);
is_fixed = gst_caps_is_fixed (othercaps);
}
}
/* caps should be fixed now, if not we have to fail. */
if (!gst_caps_is_fixed (othercaps))
if (!is_fixed)
goto could_not_fixate;
/* and peer should accept, don't check again if we already checked the