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>

0 files changed, 0 insertions, 0 deletions