v4l2: camera_proxy: Pass const reference to setFmtFromConfig()

The setFmtFromConfig() method doesn't modify its parameter, make it
const.

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>

2 files changed, 3 insertions, 3 deletions

diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp
index 63affaee..079257f4 100644
--- a/src/v4l2/v4l2_camera_proxy.cpp
+++ b/src/v4l2/v4l2_camera_proxy.cpp
@@ -162,10 +162,10 @@ bool V4L2CameraProxy::validateMemoryType(uint32_t memory)
 	return memory == V4L2_MEMORY_MMAP;
 }
 
-void V4L2CameraProxy::setFmtFromConfig(StreamConfiguration &streamConfig)
+void V4L2CameraProxy::setFmtFromConfig(const StreamConfiguration &streamConfig)
 {
 	const PixelFormatInfo &info = PixelFormatInfo::info(streamConfig.pixelFormat);
-	Size size = streamConfig.size;
+	const Size &size = streamConfig.size;
 
 	curV4L2Format_.fmt.pix.width        = size.width;
 	curV4L2Format_.fmt.pix.height       = size.height;
diff --git a/src/v4l2/v4l2_camera_proxy.h b/src/v4l2/v4l2_camera_proxy.h
index f06b5b87..79eb87bc 100644
--- a/src/v4l2/v4l2_camera_proxy.h
+++ b/src/v4l2/v4l2_camera_proxy.h
@@ -39,7 +39,7 @@ public:
 private:
 	bool validateBufferType(uint32_t type);
 	bool validateMemoryType(uint32_t memory);
-	void setFmtFromConfig(StreamConfiguration &streamConfig);
+	void setFmtFromConfig(const StreamConfiguration &streamConfig);
 	void querycap(std::shared_ptr<Camera> camera);
 	int tryFormat(struct v4l2_format *arg);
 	enum v4l2_priority maxPriority();