v4l2: v4l2_camera_file: Store file description

Create a string that describe the file from the path and file
descriptor. This will be used in log messages to clearly identify which
file an operation is related to.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/v4l2/v4l2_camera_file.h b/src/v4l2/v4l2_camera_file.h
index 6c4cb5d8..1a7b6a63 100644
--- a/src/v4l2/v4l2_camera_file.h
+++ b/src/v4l2/v4l2_camera_file.h
@@ -7,6 +7,8 @@
 
 #pragma once
 
+#include <string>
+
 #include <linux/videodev2.h>
 
 class V4L2CameraProxy;
@@ -14,7 +16,8 @@ class V4L2CameraProxy;
 class V4L2CameraFile
 {
 public:
-	V4L2CameraFile(int efd, bool nonBlocking, V4L2CameraProxy *proxy);
+	V4L2CameraFile(int dirfd, const char *path, int efd, bool nonBlocking,
+		       V4L2CameraProxy *proxy);
 	~V4L2CameraFile();
 
 	V4L2CameraProxy *proxy() const { return proxy_; }
@@ -25,9 +28,12 @@ public:
 	enum v4l2_priority priority() const { return priority_; }
 	void setPriority(enum v4l2_priority priority) { priority_ = priority; }
 
+	const std::string &description() const;
+
 private:
 	V4L2CameraProxy *proxy_;
 
+	std::string description_;
 	bool nonBlocking_;
 	int efd_;
 	enum v4l2_priority priority_;