[libcamera-devel] [PATCH v2 3/3] libcamera: pipeline: uvcvideo: create a V4L2Device for the default video entity
Niklas Söderlund
niklas.soderlund at ragnatech.se
Fri Jan 25 15:39:51 CET 2019
Add a V4L2Device for the default video entity in the media graph. The
UVC pipeline needs to search for the entity marked with the
MEDIA_ENT_FL_DEFAULT flag as the entity names in the media graph varies
depending on which device is used.
Signed-off-by: Niklas Söderlund <niklas.soderlund at ragnatech.se>
---
src/libcamera/pipeline/uvcvideo.cpp | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/src/libcamera/pipeline/uvcvideo.cpp b/src/libcamera/pipeline/uvcvideo.cpp
index 1a445edfa8df777c..e3a475704c080e90 100644
--- a/src/libcamera/pipeline/uvcvideo.cpp
+++ b/src/libcamera/pipeline/uvcvideo.cpp
@@ -11,6 +11,7 @@
#include "log.h"
#include "media_device.h"
#include "pipeline_handler.h"
+#include "v4l2_device.h"
namespace libcamera {
@@ -26,15 +27,20 @@ public:
private:
std::shared_ptr<MediaDevice> media_;
+
+ V4L2Device *video_;
};
PipelineHandlerUVC::PipelineHandlerUVC(CameraManager *manager)
- : PipelineHandler(manager), media_(nullptr)
+ : PipelineHandler(manager), media_(nullptr), video_(nullptr)
{
}
PipelineHandlerUVC::~PipelineHandlerUVC()
{
+ if (video_)
+ delete video_;
+
if (media_)
media_->release();
}
@@ -50,6 +56,18 @@ bool PipelineHandlerUVC::match(DeviceEnumerator *enumerator)
media_->acquire();
+ for (MediaEntity *entity : media_->entities()) {
+ if (entity->flags() & MEDIA_ENT_FL_DEFAULT) {
+ video_ = new V4L2Device(*entity);
+ break;
+ }
+ }
+
+ if (!video_ || video_->open()) {
+ media_->release();
+ return false;
+ }
+
std::shared_ptr<Camera> camera = Camera::create(this, media_->model());
registerCamera(std::move(camera));
hotplugMediaDevice(media_.get());
--
2.20.1
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