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videofilter: Add a default get_unit_size function

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This returns the correct values for all formats that are handled by
GstVideoFormat and makes all the custom get_unit_size functions in
many elements unnecessary.
This commit is contained in:
Sebastian Dröge 2009-06-16 19:38:17 +02:00
parent 33837d420c
commit a64caea0bd
1 changed files with 25 additions and 0 deletions
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25
gst-libs/gst/video/gstvideofilter.c
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@ -39,6 +39,8 @@
#include "gstvideofilter.h" #include "gstvideofilter.h"
#include <gst/video/video.h>
GST_DEBUG_CATEGORY_STATIC (gst_video_filter_debug); GST_DEBUG_CATEGORY_STATIC (gst_video_filter_debug);
#define GST_CAT_DEFAULT gst_video_filter_debug #define GST_CAT_DEFAULT gst_video_filter_debug
@ -71,6 +73,26 @@ gst_video_filter_get_type (void)
return video_filter_type; return video_filter_type;
} }
static gboolean
gst_video_filter_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
guint * size)
{
GstVideoFormat fmt;
gint width, height;
if (!gst_video_format_parse_caps (caps, &fmt, &width, &height)) {
GST_WARNING_OBJECT (btrans, "Failed to parse caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
*size = gst_video_format_get_size (fmt, width, height);
GST_DEBUG_OBJECT (btrans, "Returning size %u bytes for caps %"
GST_PTR_FORMAT, *size, caps);
return TRUE;
}
static void static void
gst_video_filter_class_init (gpointer g_class, gpointer class_data) gst_video_filter_class_init (gpointer g_class, gpointer class_data)
{ {
@ -84,6 +106,9 @@ gst_video_filter_class_init (gpointer g_class, gpointer class_data)
gstelement_class = (GstElementClass *) klass; gstelement_class = (GstElementClass *) klass;
trans_class = (GstBaseTransformClass *) klass; trans_class = (GstBaseTransformClass *) klass;
trans_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_video_filter_get_unit_size);
parent_class = g_type_class_peek_parent (klass); parent_class = g_type_class_peek_parent (klass);
GST_DEBUG_CATEGORY_INIT (gst_video_filter_debug, "videofilter", 0, GST_DEBUG_CATEGORY_INIT (gst_video_filter_debug, "videofilter", 0,