reorganization

src/video/playout/RenderOutputQueue.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include "VideoIOTypes.h"
+#include "VideoPlayoutPolicy.h"
+
+#include <cstdint>
+#include <deque>
+#include <functional>
+#include <mutex>
+
+struct RenderOutputFrame
+{
+	VideoIOOutputFrame frame;
+	uint64_t frameIndex = 0;
+	bool stale = false;
+	std::function<void(VideoIOOutputFrame& frame)> releaseFrame;
+};
+
+struct RenderOutputQueueMetrics
+{
+	std::size_t depth = 0;
+	std::size_t capacity = 0;
+	uint64_t pushedCount = 0;
+	uint64_t poppedCount = 0;
+	uint64_t droppedCount = 0;
+	uint64_t underrunCount = 0;
+};
+
+class RenderOutputQueue
+{
+public:
+	explicit RenderOutputQueue(const VideoPlayoutPolicy& policy = VideoPlayoutPolicy());
+
+	void Configure(const VideoPlayoutPolicy& policy);
+	bool Push(RenderOutputFrame frame);
+	bool TryPop(RenderOutputFrame& frame);
+	bool DropOldestFrame();
+	void Clear();
+	RenderOutputQueueMetrics GetMetrics() const;
+
+private:
+	std::size_t CapacityLocked() const;
+	static void ReleaseFrame(RenderOutputFrame& frame);
+
+	mutable std::mutex mMutex;
+	VideoPlayoutPolicy mPolicy;
+	std::deque<RenderOutputFrame> mReadyFrames;
+	uint64_t mPushedCount = 0;
+	uint64_t mPoppedCount = 0;
+	uint64_t mDroppedCount = 0;
+	uint64_t mUnderrunCount = 0;
+};