commit d1cbf59fe460dc4896355a7d62671209f6f030ce
author Philipp Zabel <p.zabel@pengutronix.de> Thu Aug 09 17:24:35 2018 +0200
committer Nicolas Dufresne <nicolas.dufresne@collabora.com> Tue Aug 21 12:07:53 2018 -0400
tree 74755c4f019121ddb48b67ad4c83957b43bbc760
parent c49e4a0ea35d2d29849384e307142ad96535674c

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

sys/v4l2/gstv4l2object.c

diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c
index c6e74b0..5512ed9 100644
--- a/sys/v4l2/gstv4l2object.c
+++ b/sys/v4l2/gstv4l2object.c
@@ -3460,6 +3460,7 @@
     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;