[libcamera-devel] [PATCH v9 6/8] libcamera: Support passing ColorSpaces to V4L2 subdevices

[David Plowman]

The ColorSpace from the StreamConfiguration is now handled
appropriately in the V4L2Subdevice.

Signed-off-by: David Plowman <david.plowman at raspberrypi.com>
---
 src/libcamera/v4l2_subdevice.cpp | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/libcamera/v4l2_subdevice.cpp b/src/libcamera/v4l2_subdevice.cpp
index 981645e0..f5ec6901 100644
--- a/src/libcamera/v4l2_subdevice.cpp
+++ b/src/libcamera/v4l2_subdevice.cpp
@@ -411,6 +411,7 @@ int V4L2Subdevice::getFormat(unsigned int pad, V4L2SubdeviceFormat *format,
 	format->size.width = subdevFmt.format.width;
 	format->size.height = subdevFmt.format.height;
 	format->mbus_code = subdevFmt.format.code;
+	format->colorSpace = toColorSpace(subdevFmt.format);
 
 	return 0;
 }
@@ -439,7 +440,13 @@ int V4L2Subdevice::setFormat(unsigned int pad, V4L2SubdeviceFormat *format,
 	subdevFmt.format.code = format->mbus_code;
 	subdevFmt.format.field = V4L2_FIELD_NONE;
 
-	int ret = ioctl(VIDIOC_SUBDEV_S_FMT, &subdevFmt);
+	int ret = fromColorSpace(format->colorSpace, subdevFmt.format);
+	if (ret < 0)
+		LOG(V4L2, Warning)
+			<< "Setting color space unrecognised by V4L2: "
+			<< ColorSpace::toString(format->colorSpace);
+
+	ret = ioctl(VIDIOC_SUBDEV_S_FMT, &subdevFmt);
 	if (ret) {
 		LOG(V4L2, Error)
 			<< "Unable to set format on pad " << pad
@@ -450,6 +457,7 @@ int V4L2Subdevice::setFormat(unsigned int pad, V4L2SubdeviceFormat *format,
 	format->size.width = subdevFmt.format.width;
 	format->size.height = subdevFmt.format.height;
 	format->mbus_code = subdevFmt.format.code;
+	format->colorSpace = toColorSpace(subdevFmt.format);
 
 	return 0;
 }
-- 
2.20.1