Decklink abstraction

apps/LoopThroughWithOpenGLCompositing/videoio/VideoPlayoutScheduler.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "VideoIOTypes.h"
+
+#include <cstdint>
+
+class VideoPlayoutScheduler
+{
+public:
+	void Configure(int64_t frameDuration, int64_t timeScale);
+	void Reset();
+	VideoIOScheduleTime NextScheduleTime();
+	void AccountForCompletionResult(VideoIOCompletionResult result);
+	double FrameBudgetMilliseconds() const;
+	uint64_t ScheduledFrameIndex() const { return mScheduledFrameIndex; }
+	int64_t TimeScale() const { return mTimeScale; }
+
+private:
+	int64_t mFrameDuration = 0;
+	int64_t mTimeScale = 0;
+	uint64_t mScheduledFrameIndex = 0;
+};