v4l2object: stop V4L2 from zeroing extended colorimetry for non-mplane

Setting the priv field to a magic value stops V4L2 core from zeroing
the extended colorimetry fields quantization, ycbcr_enc, and xfer_func
for non-mplane queues.

https://bugzilla.gnome.org/show_bug.cgi?id=796940

diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c
index 39b696a..4b650a0 100644 (file)
--- a/sys/v4l2/gstv4l2object.c
+++ b/sys/v4l2/gstv4l2object.c
@@ -3460,6 +3460,7 @@ gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
     format.fmt.pix_mp.ycbcr_enc = matrix;
     format.fmt.pix_mp.xfer_func = transfer;
   } else {
+    format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
     format.fmt.pix.colorspace = colorspace;
     format.fmt.pix.quantization = range;
     format.fmt.pix.ycbcr_enc = matrix;