[libcamera-devel] [PATCH v3 5/8] libcamera: pipeline: uvcvideo: Translate from V4L2 to DRM pixel formats

[Niklas Söderlund]

When generating a camera configuration pixel formats directly from the
video device are used that contains V4L2 pixel formats. Translate the
pixel formats to DRM before using them in the camera configuration.

Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 src/libcamera/pipeline/uvcvideo.cpp | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/libcamera/pipeline/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo.cpp
index 320da2685795c041..1de091e0c0e57f7c 100644
--- a/src/libcamera/pipeline/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo.cpp
@@ -153,8 +153,19 @@ CameraConfiguration *PipelineHandlerUVC::generateConfiguration(Camera *camera,
 	if (roles.empty())
 		return config;
 
-	ImageFormats v4l2formats = data->video_->formats();
-	StreamFormats formats(v4l2formats.data());
+	std::map<unsigned int, std::vector<SizeRange>> v4l2Formats =
+		data->video_->formats().data();
+	std::map<PixelFormat, std::vector<SizeRange>> deviceFormats;
+	std::transform(v4l2Formats.begin(), v4l2Formats.end(),
+		       std::inserter(deviceFormats, deviceFormats.begin()),
+		       [&](const decltype(v4l2Formats)::value_type &format) {
+			       return decltype(deviceFormats)::value_type{
+				       data->video_->toPixelFormat(format.first),
+				       format.second
+			       };
+		       });
+
+	StreamFormats formats(deviceFormats);
 	StreamConfiguration cfg(formats);
 
 	cfg.pixelFormat = formats.pixelformats().front();
-- 
2.25.1