libcamera: request: Declare a using directive for map of buffers

Declare a using directive for the map of Stream to FrameBuffer. Update
all users of Request::buffers() to use the new usage directive.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/android/camera_device.cpp

@@ -1371,7 +1371,7 @@ int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reques
 
 void CameraDevice::requestComplete(Request *request)
 {
-	const std::map<Stream *, FrameBuffer *> &buffers = request->buffers();
+	const Request::BufferMap &buffers = request->buffers();
 	camera3_buffer_status status = CAMERA3_BUFFER_STATUS_OK;
 	std::unique_ptr<CameraMetadata> resultMetadata;
 	Camera3RequestDescriptor *descriptor =

src/cam/capture.cpp

@@ -157,7 +157,7 @@ void Capture::requestComplete(Request *request)
 	if (request->status() == Request::RequestCancelled)
 		return;
 
-	const std::map<Stream *, FrameBuffer *> &buffers = request->buffers();
+	const Request::BufferMap &buffers = request->buffers();
 
 	std::chrono::steady_clock::time_point now = std::chrono::steady_clock::now();
 	double fps = std::chrono::duration_cast<std::chrono::milliseconds>(now - last_).count();

src/libcamera/request.cpp

@@ -37,6 +37,11 @@ LOG_DEFINE_CATEGORY(Request)
  * The request has been cancelled due to capture stop
  */
 
+/**
+ * \typedef Request::BufferMap
+ * \brief A map of Stream to FrameBuffer pointers
+ */
+
 /**
  * \class Request
  * \brief A frame capture request

src/qcam/main_window.h

@@ -47,13 +47,13 @@ public:
 	{
 	}
 
-	CaptureRequest(const std::map<Stream *, FrameBuffer *> &buffers,
+	CaptureRequest(const Request::BufferMap &buffers,
 		       const ControlList &metadata)
 		: buffers_(buffers), metadata_(metadata)
 	{
 	}
 
-	std::map<Stream *, FrameBuffer *> buffers_;
+	Request::BufferMap buffers_;
 	ControlList metadata_;
 };