android: camera_device: Maintain a vector of CameraStream

Introduce a vector storing a CameraStream to track and maintain
state between an Android stream (camera3_stream_t) and a libcamera
Stream.

Only the index of the libcamera stream is stored, to facilitate identifying
the correct index for both the StreamConfiguration and Stream vectors.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/android/camera_device.h b/src/android/camera_device.h
index d7834d94..d00f617b 100644
--- a/src/android/camera_device.h
+++ b/src/android/camera_device.h
@@ -25,6 +25,15 @@
 
 class CameraMetadata;
 
+struct CameraStream {
+	/*
+	 * The index of the libcamera StreamConfiguration as added during
+	 * configureStreams(). A single libcamera Stream may be used to deliver
+	 * one or more streams to the Android framework.
+	 */
+	unsigned int index;
+};
+
 class CameraDevice : protected libcamera::Loggable
 {
 public:
@@ -90,6 +99,7 @@ private:
 
 	std::vector<Camera3StreamConfiguration> streamConfigurations_;
 	std::map<int, libcamera::PixelFormat> formatsMap_;
+	std::vector<CameraStream> streams_;
 
 	int facing_;
 	int orientation_;