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, 12 insertions, 5 deletions

diff --git a/src/cam/buffer_writer.h b/src/cam/buffer_writer.h
index 7626de42..32bb6ed5 100644
--- a/src/cam/buffer_writer.h
+++ b/src/cam/buffer_writer.h
@@ -10,20 +10,27 @@
 #include <map>
 #include <string>
 
-#include <libcamera/framebuffer.h>
+#include <libcamera/stream.h>
 
-class BufferWriter
+#include "frame_sink.h"
+
+class BufferWriter : public FrameSink
 {
 public:
 	BufferWriter(const std::string &pattern = "");
 	~BufferWriter();
 
-	void mapBuffer(libcamera::FrameBuffer *buffer);
+	int configure(const libcamera::CameraConfiguration &config) override;
+
+	void mapBuffer(libcamera::FrameBuffer *buffer) override;
 
-	int write(libcamera::FrameBuffer *buffer,
-		  const std::string &streamName);
+	bool processRequest(libcamera::Request *request) override;
 
 private:
+	void writeBuffer(const libcamera::Stream *stream,
+			 libcamera::FrameBuffer *buffer);
+
+	std::map<const libcamera::Stream *, std::string> streamNames_;
 	std::string pattern_;
 	std::map<int, std::pair<void *, unsigned int>> mappedBuffers_;
 };