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capsfilter: implement custom accept_caps method

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Implement a custom acceptcaps function. We can simply check if there is an
intersection with the new caps. This makes the accept caps function much faster.

See #621190
This commit is contained in:
Wim Taymans 2010-06-14 12:39:47 +02:00
parent 76f7a001fc
commit d612442fde
1 changed files with 31 additions and 0 deletions
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31
plugins/elements/gstcapsfilter.c
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@ -70,6 +70,8 @@ static void gst_capsfilter_dispose (GObject * object);
static GstCaps *gst_capsfilter_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps);
static gboolean gst_capsfilter_accept_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps);
static GstFlowReturn gst_capsfilter_transform_ip (GstBaseTransform * base,
GstBuffer * buf);
static GstFlowReturn gst_capsfilter_prepare_buf (GstBaseTransform * trans,
@ -113,6 +115,7 @@ gst_capsfilter_class_init (GstCapsFilterClass * klass)
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_capsfilter_transform_caps);
trans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_capsfilter_transform_ip);
trans_class->accept_caps = GST_DEBUG_FUNCPTR (gst_capsfilter_accept_caps);
trans_class->prepare_output_buffer =
GST_DEBUG_FUNCPTR (gst_capsfilter_prepare_buf);
}
@ -263,6 +266,34 @@ gst_capsfilter_transform_caps (GstBaseTransform * base,
return ret;
}
static gboolean
gst_capsfilter_accept_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (base);
GstCaps *filter_caps;
gboolean ret;
GST_OBJECT_LOCK (capsfilter);
filter_caps = gst_caps_ref (capsfilter->filter_caps);
GST_OBJECT_UNLOCK (capsfilter);
ret = gst_caps_can_intersect (caps, filter_caps);
GST_DEBUG_OBJECT (capsfilter, "can intersect: %" GST_PTR_FORMAT, ret);
if (ret) {
/* if we can intersect, see if the other end also accepts */
if (direction == GST_PAD_SRC)
ret = gst_pad_peer_accept_caps (GST_BASE_TRANSFORM_SINK_PAD (base), caps);
else
ret = gst_pad_peer_accept_caps (GST_BASE_TRANSFORM_SRC_PAD (base), caps);
GST_DEBUG_OBJECT (capsfilter, "peer accept: %" GST_PTR_FORMAT, ret);
}
gst_caps_unref (filter_caps);
return ret;
}
static GstFlowReturn
gst_capsfilter_transform_ip (GstBaseTransform * base, GstBuffer * buf)
{