libcamera: pipeline: simple: converter: Replace open() with isValid()

Simplify the SimpleConverter interface by opening the M2M device in the
constructor. The explicit call to open() is replaced by a check through
a new isValid() function, and the unused close() function is removed.

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

1 files changed, 1 insertions, 2 deletions

diff --git a/src/libcamera/pipeline/simple/converter.h b/src/libcamera/pipeline/simple/converter.h
index d9ace52d..6e3df553 100644
--- a/src/libcamera/pipeline/simple/converter.h
+++ b/src/libcamera/pipeline/simple/converter.h
@@ -30,8 +30,7 @@ class SimpleConverter
 public:
 	SimpleConverter(MediaDevice *media);
 
-	int open();
-	void close();
+	bool isValid() const { return m2m_ != nullptr; }
 
 	std::vector<PixelFormat> formats(PixelFormat input);
 	SizeRange sizes(const Size &input);