[libcamera-devel] [PATCH] libcamera: v4l2_device: Map YCbCrEncoding::None to V4L2

[Laurent Pinchart]

The ycbcrEncodingToV4l2 map is missing the YCbCrEncoding::None encoding,
which results in a failure of V4L2Device::fromColorSpace() to convert
color spaces from libcamera to V4L2 for RGB formats. Fix it by adding
the missing encoding. As V4L2 has no such encoding, use
V4L2_YCBCR_ENC_DEFAULT as the value doesn't matter.

Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 src/libcamera/v4l2_device.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libcamera/v4l2_device.cpp b/src/libcamera/v4l2_device.cpp
index 1d899657bf7d..7f251bd820a0 100644
--- a/src/libcamera/v4l2_device.cpp
+++ b/src/libcamera/v4l2_device.cpp
@@ -796,6 +796,8 @@ static const std::map<ColorSpace::TransferFunction, v4l2_xfer_func> transferFunc
 };
 
 static const std::map<ColorSpace::YcbcrEncoding, v4l2_ycbcr_encoding> ycbcrEncodingToV4l2 = {
+	/* V4L2 has no "none" encoding. */
+	{ ColorSpace::YcbcrEncoding::None, V4L2_YCBCR_ENC_DEFAULT },
 	{ ColorSpace::YcbcrEncoding::Rec601, V4L2_YCBCR_ENC_601 },
 	{ ColorSpace::YcbcrEncoding::Rec709, V4L2_YCBCR_ENC_709 },
 	{ ColorSpace::YcbcrEncoding::Rec2020, V4L2_YCBCR_ENC_BT2020 },
-- 
Regards,

Laurent Pinchart