cam: kms_sink: Add color space support

KMS defines YCbCr encoding and quantization properties for planes. When
supported by the device, set them to match the color space of the
stream to render colors accurately.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Eric Curtin <ecurtin@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/cam/kms_sink.h b/src/cam/kms_sink.h
index 76c4e611..e2c618a1 100644
--- a/src/cam/kms_sink.h
+++ b/src/cam/kms_sink.h
@@ -10,6 +10,7 @@
 #include <list>
 #include <memory>
 #include <mutex>
+#include <optional>
 #include <string>
 #include <utility>
 
@@ -67,6 +68,8 @@ private:
 	libcamera::PixelFormat format_;
 	libcamera::Size size_;
 	unsigned int stride_;
+	std::optional<unsigned int> colorEncoding_;
+	std::optional<unsigned int> colorRange_;
 
 	libcamera::Rectangle src_;
 	libcamera::Rectangle dst_;