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videoconvert: fix the transform_size function

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The output size of a buffer does not depend on the input size but simply on the
caps of the output buffers. Don't let the base implementation deal with
unit_sizes, because input buffers might not be a multiple of that when they have
padding or non-default strides. instead, implement a transform size function
that simply calculate the natural size of an output buffer based on the caps.
This commit is contained in:
Wim Taymans 2011-12-01 15:47:16 +01:00
parent 92ac25bdb3
commit 892716e076
1 changed files with 11 additions and 10 deletions
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21
gst/videoconvert/gstvideoconvert.c
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@ -79,8 +79,9 @@ static void gst_video_convert_get_property (GObject * object,
static gboolean gst_video_convert_set_caps (GstBaseTransform * btrans,
GstCaps * incaps, GstCaps * outcaps);
static gboolean gst_video_convert_get_unit_size (GstBaseTransform * btrans,
GstCaps * caps, gsize * size);
static gboolean gst_video_convert_transform_size (GstBaseTransform * btrans,
GstPadDirection direction, GstCaps * caps, gsize size,
GstCaps * othercaps, gsize * othersize);
static GstFlowReturn gst_video_convert_transform (GstBaseTransform * btrans,
GstBuffer * inbuf, GstBuffer * outbuf);
@ -366,8 +367,8 @@ gst_video_convert_class_init (GstVideoConvertClass * klass)
GST_DEBUG_FUNCPTR (gst_video_convert_transform_caps);
gstbasetransform_class->set_caps =
GST_DEBUG_FUNCPTR (gst_video_convert_set_caps);
gstbasetransform_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_video_convert_get_unit_size);
gstbasetransform_class->transform_size =
GST_DEBUG_FUNCPTR (gst_video_convert_transform_size);
gstbasetransform_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_video_convert_decide_allocation);
gstbasetransform_class->transform =
@ -424,18 +425,18 @@ gst_video_convert_get_property (GObject * object, guint property_id,
}
static gboolean
gst_video_convert_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
gsize * size)
gst_video_convert_transform_size (GstBaseTransform * btrans,
GstPadDirection direction, GstCaps * caps, gsize size,
GstCaps * othercaps, gsize * othersize)
{
gboolean ret = TRUE;
GstVideoInfo info;
g_assert (size);
ret = gst_video_info_from_caps (&info, caps);
if (ret) {
*size = info.size;
}
ret = gst_video_info_from_caps (&info, othercaps);
if (ret)
*othersize = info.size;
return ret;
}