videoscale: disable chroma and matrix operations

Ignore chroma subsampling and color matrix transformations like the
old videoscale used to do. This is to make the performance like it was
before.

See https://bugzilla.gnome.org/show_bug.cgi?id=741987

diff --git a/gst/videoscale/gstvideoscale.c b/gst/videoscale/gstvideoscale.c
index 4da1a9f..cb6c1e2 100644 (file)
--- a/gst/videoscale/gstvideoscale.c
+++ b/gst/videoscale/gstvideoscale.c
@@ -602,7 +602,9 @@ gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in,
         GST_VIDEO_CONVERTER_OPT_DEST_WIDTH, G_TYPE_INT,
         out_info->width - videoscale->borders_w,
         GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT,
-        out_info->height - videoscale->borders_h, NULL);
+        out_info->height - videoscale->borders_h,
+        GST_VIDEO_CONVERTER_OPT_MATRIX_MODE, G_TYPE_STRING, "none",
+        GST_VIDEO_CONVERTER_OPT_CHROMA_MODE, G_TYPE_STRING, "none", NULL);
 
     if (videoscale->gamma_decode) {
       gst_structure_set (options,