cam: camera_session: Use std::unique_ptr<> to manage class members

Store the BufferWriter and FrameBufferAllocator pointers in
std::unique_ptr<> instances to simplify memory management and avoid
leaks.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

2 files changed, 9 insertions, 11 deletions

diff --git a/src/cam/camera_session.cpp b/src/cam/camera_session.cpp
index b1200e60..1fb7c1b6 100644
--- a/src/cam/camera_session.cpp
+++ b/src/cam/camera_session.cpp
@@ -20,9 +20,8 @@ using namespace libcamera;
 
 CameraSession::CameraSession(std::shared_ptr<Camera> camera,
 			     CameraConfiguration *config)
-	: camera_(camera), config_(config), writer_(nullptr), last_(0),
-	  queueCount_(0), captureCount_(0), captureLimit_(0),
-	  printMetadata_(false), allocator_(nullptr)
+	: camera_(camera), config_(config), last_(0), queueCount_(0),
+	  captureCount_(0), captureLimit_(0), printMetadata_(false)
 {
 }
 
@@ -56,12 +55,12 @@ int CameraSession::start(const OptionsParser::Options &options)
 
 	if (options.isSet(OptFile)) {
 		if (!options[OptFile].toString().empty())
-			writer_ = new BufferWriter(options[OptFile]);
+			writer_ = std::make_unique<BufferWriter>(options[OptFile]);
 		else
-			writer_ = new BufferWriter();
+			writer_ = std::make_unique<BufferWriter>();
 	}
 
-	allocator_ = new FrameBufferAllocator(camera_);
+	allocator_ = std::make_unique<FrameBufferAllocator>(camera_);
 
 	return startCapture();
 }
@@ -72,12 +71,11 @@ void CameraSession::stop()
 	if (ret)
 		std::cout << "Failed to stop capture" << std::endl;
 
-	delete writer_;
-	writer_ = nullptr;
+	writer_.reset();
 
 	requests_.clear();
 
-	delete allocator_;
+	allocator_.reset();
 }
 
 int CameraSession::startCapture()
diff --git a/src/cam/camera_session.h b/src/cam/camera_session.h
index 5131cfd4..31e8d6db 100644
--- a/src/cam/camera_session.h
+++ b/src/cam/camera_session.h
@@ -44,7 +44,7 @@ private:
 	libcamera::CameraConfiguration *config_;
 
 	std::map<const libcamera::Stream *, std::string> streamName_;
-	BufferWriter *writer_;
+	std::unique_ptr<BufferWriter> writer_;
 	uint64_t last_;
 
 	unsigned int queueCount_;
@@ -52,7 +52,7 @@ private:
 	unsigned int captureLimit_;
 	bool printMetadata_;
 
-	libcamera::FrameBufferAllocator *allocator_;
+	std::unique_ptr<libcamera::FrameBufferAllocator> allocator_;
 	std::vector<std::unique_ptr<libcamera::Request>> requests_;
 };