v4l2object: Use default colorimetry if that in caps is unknown

Some streams have unknown colorimetry in caps, but v4l2object sets
default values for each primaries. It will cause check colorimetry
fail when do gst_v4l2_video_colorimetry_matches().

To fix this, need to keep the unknown colorimetry in caps same as
the default value set by v4l2object.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/923>

diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c
index b5af59b..8ffd7e3 100644 (file)
--- a/sys/v4l2/gstv4l2object.c
+++ b/sys/v4l2/gstv4l2object.c
@@ -3406,6 +3406,16 @@ gst_v4l2_video_colorimetry_matches (const GstVideoColorimetry * cinfo,
   if (!gst_video_info_from_caps (&info, caps))
     return FALSE;
 
+  /* if colorimetry in caps is unknown, use the default one */
+  if (info.colorimetry.primaries == GST_VIDEO_COLOR_PRIMARIES_UNKNOWN)
+    info.colorimetry.primaries = cinfo->primaries;
+  if (info.colorimetry.range == GST_VIDEO_COLOR_RANGE_UNKNOWN)
+    info.colorimetry.range = cinfo->range;
+  if (info.colorimetry.matrix == GST_VIDEO_COLOR_MATRIX_UNKNOWN)
+    info.colorimetry.matrix = cinfo->matrix;
+  if (info.colorimetry.transfer == GST_VIDEO_TRANSFER_UNKNOWN)
+    info.colorimetry.transfer = cinfo->transfer;
+
   if (gst_video_colorimetry_is_equal (&info.colorimetry, cinfo))
     return TRUE;