cam: Turn BufferWriter into a FrameSink

Make the BufferWriter class inherit from FrameSink, and use the
FrameSink API to manage it. This makes the code more generic, and will
allow usage of other sinks.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/cam/camera_session.h b/src/cam/camera_session.h
index b0f50e7f..2ccc7197 100644
--- a/src/cam/camera_session.h
+++ b/src/cam/camera_session.h
@@ -21,9 +21,10 @@
 #include <libcamera/request.h>
 #include <libcamera/stream.h>
 
-#include "buffer_writer.h"
 #include "options.h"
 
+class FrameSink;
+
 class CameraSession
 {
 public:
@@ -53,13 +54,14 @@ private:
 	int queueRequest(libcamera::Request *request);
 	void requestComplete(libcamera::Request *request);
 	void processRequest(libcamera::Request *request);
+	void sinkRelease(libcamera::Request *request);
 
 	const OptionsParser::Options &options_;
 	std::shared_ptr<libcamera::Camera> camera_;
 	std::unique_ptr<libcamera::CameraConfiguration> config_;
 
 	std::map<const libcamera::Stream *, std::string> streamName_;
-	std::unique_ptr<BufferWriter> writer_;
+	std::unique_ptr<FrameSink> sink_;
 	unsigned int cameraIndex_;
 
 	uint64_t last_;