Implement buffered fast queue

core-buffer/include/BufferedFastQueue.hpp

@@ -0,0 +1,32 @@
+#ifndef SF_DAQ_BUFFER_BUFFEREDFASTQUEUE_HPP
+#define SF_DAQ_BUFFER_BUFFEREDFASTQUEUE_HPP
+
+#include "FastQueue.hpp"
+#include "WriterH5Writer.hpp"
+
+
+class BufferedFastQueue {
+    FastQueue<ImageMetadataBuffer>& queue_;
+    const size_t buffer_n_pulses_;
+    const size_t n_modules_;
+
+    ImageMetadataBuffer* queue_meta_buffer_ = nullptr;
+    char* queue_data_buffer_ = nullptr;
+    int current_slot_id_ = -1;
+
+    ImageMetadata image_metadata_;
+
+public:
+    BufferedFastQueue(FastQueue<ImageMetadataBuffer>& queue,
+                      const size_t buffer_n_pulses,
+                      const size_t n_modules);
+
+    ImageMetadata* get_metadata_buffer();
+    char* get_data_buffer();
+
+    void commit();
+    void finalize();
+};
+
+
+#endif //SF_DAQ_BUFFER_BUFFEREDFASTQUEUE_HPP