videoscale: Use passthrough mode if width and height are not changed

It doesn't matter if the PAR changes or not, processing of every pixel
is only necessary when the width or height changes.

diff --git a/gst/videoscale/gstvideoscale.c b/gst/videoscale/gstvideoscale.c
index 06ea8b18fa243f111ca332b06af07df9c5922d93..5ae058dde217ae02f04247944ff3a79d750e51c0 100644 (file)
--- a/gst/videoscale/gstvideoscale.c
+++ b/gst/videoscale/gstvideoscale.c
@@ -264,8 +264,6 @@ gst_video_scale_class_init (GstVideoScaleClass * klass)
   trans_class->transform = GST_DEBUG_FUNCPTR (gst_video_scale_transform);
   trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_video_scale_fixate_caps);
   trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_scale_src_event);
-
-  trans_class->passthrough_on_same_caps = TRUE;
 }
 
 static void
@@ -545,6 +543,10 @@ gst_video_scale_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
   if (to_dar_n != from_dar_n || to_dar_d != from_dar_d)
     GST_WARNING_OBJECT (videoscale, "Can't keep DAR!");
 
+  gst_base_transform_set_passthrough (trans,
+      (videoscale->from_width == videoscale->to_width
+          && videoscale->from_height == videoscale->to_height));
+
   GST_DEBUG_OBJECT (videoscale, "from=%dx%d (par=%d/%d dar=%d/%d), size %d "
       "-> to=%dx%d (par=%d/%d dar=%d/%d), size %d",
       videoscale->from_width, videoscale->from_height, from_par_n, from_par_d,