Extract frame transfer callbacks

apps/LoopThroughWithOpenGLCompositing/gl/OpenGLDeckLinkBridge.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#include "DeckLinkAPI_h.h"
+
+#include <windows.h>
+
+#include <functional>
+
+class DeckLinkSession;
+class OpenGLRenderer;
+class RuntimeHost;
+
+class OpenGLDeckLinkBridge
+{
+public:
+	using RenderEffectCallback = std::function<void()>;
+	using PaintCallback = std::function<void()>;
+
+	OpenGLDeckLinkBridge(
+		DeckLinkSession& deckLink,
+		OpenGLRenderer& renderer,
+		RuntimeHost& runtimeHost,
+		CRITICAL_SECTION& mutex,
+		HDC hdc,
+		HGLRC hglrc,
+		RenderEffectCallback renderEffect,
+		PaintCallback paint);
+
+	void VideoFrameArrived(IDeckLinkVideoInputFrame* inputFrame, bool hasNoInputSource);
+	void PlayoutFrameCompleted(IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult completionResult);
+
+private:
+	DeckLinkSession& mDeckLink;
+	OpenGLRenderer& mRenderer;
+	RuntimeHost& mRuntimeHost;
+	CRITICAL_SECTION& mMutex;
+	HDC mHdc;
+	HGLRC mHglrc;
+	RenderEffectCallback mRenderEffect;
+	PaintCallback mPaint;
+};