Video backend

apps/LoopThroughWithOpenGLCompositing/videoio/VideoIOBackendFactory.cpp

@@ -0,0 +1,16 @@
+#include "VideoIOBackendFactory.h"
+
+#include "DeckLinkSession.h"
+#include "VideoIOTypes.h"
+
+std::unique_ptr<VideoIODevice> CreateVideoIODevice(VideoIOBackendId backendId, std::string& error)
+{
+	switch (backendId)
+	{
+	case VideoIOBackendId::DeckLink:
+		return std::make_unique<DeckLinkSession>();
+	}
+
+	error = "Unsupported video I/O backend.";
+	return nullptr;
+}