android: camera_stream: Construct with Android stream

Pass the android camera3_stream_t, and a libcamera::StreamConfiguration
to identify the source and destination parameters of this stream.

Pass a CameraDevice pointer to the CameraStream constructor to allow
retrieval of the StreamConfiguration associated with the CameraStream.

Also change the format on which the CameraDevice performs checks to
decide if post-processing is required, as the libcamera facing format is
not meaningful anymore, but the Android requested format should be used
instead.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

src/android/camera_device.h

@@ -43,6 +43,10 @@ public:
 	unsigned int id() const { return id_; }
 	camera3_device_t *camera3Device() { return &camera3Device_; }
 	const libcamera::Camera *camera() const { return camera_.get(); }
+	libcamera::CameraConfiguration *cameraConfiguration() const
+	{
+		return config_.get();
+	}
 
 	int facing() const { return facing_; }
 	int orientation() const { return orientation_; }