[libcamera-devel] [PATCH v2 4/7] libcamera: pipeline: uvcvideo: Initialize CameraData from MediaDevice

[Niklas Söderlund]

The UVCCameraData::init() is the only consumer of the default entry in
the media graph, move the lookup of it into the init() function and pass
it the MediaDevice. This is done in preparation to extend the CameraData
initialization to consume more information form the MediaDevice.

Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
 src/libcamera/pipeline/uvcvideo/uvcvideo.cpp | 30 ++++++++++----------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
index bc892ecfac046881..b12083a7a74dae54 100644
--- a/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo/uvcvideo.cpp
@@ -43,7 +43,7 @@ public:
 		delete video_;
 	}
 
-	int init(MediaEntity *entity);
+	int init(MediaDevice *media);
 	void addControl(uint32_t cid, const ControlInfo &v4l2info,
 			ControlInfoMap::Map *ctrls);
 	void bufferReady(FrameBuffer *buffer);
@@ -457,18 +457,7 @@ bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)
 
 	std::unique_ptr<UVCCameraData> data = std::make_unique<UVCCameraData>(this);
 
-	/* Locate and initialise the camera data with the default video node. */
-	const std::vector<MediaEntity *> &entities = media->entities();
-	auto entity = std::find_if(entities.begin(), entities.end(),
-				   [](MediaEntity *entity) {
-					   return entity->flags() & MEDIA_ENT_FL_DEFAULT;
-				   });
-	if (entity == entities.end()) {
-		LOG(UVC, Error) << "Could not find a default video device";
-		return false;
-	}
-
-	if (data->init(*entity))
+	if (data->init(media))
 		return false;
 
 	/* Create and register the camera. */
@@ -488,12 +477,23 @@ bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)
 	return true;
 }
 
-int UVCCameraData::init(MediaEntity *entity)
+int UVCCameraData::init(MediaDevice *media)
 {
 	int ret;
 
+	/* Locate and initialise the camera data with the default video node. */
+	const std::vector<MediaEntity *> &entities = media->entities();
+	auto entity = std::find_if(entities.begin(), entities.end(),
+				   [](MediaEntity *entity) {
+					   return entity->flags() & MEDIA_ENT_FL_DEFAULT;
+				   });
+	if (entity == entities.end()) {
+		LOG(UVC, Error) << "Could not find a default video device";
+		return -ENODEV;
+	}
+
 	/* Create and open the video device. */
-	video_ = new V4L2VideoDevice(entity);
+	video_ = new V4L2VideoDevice(*entity);
 	ret = video_->open();
 	if (ret)
 		return ret;
-- 
2.28.0