Video format refactor

apps/LoopThroughWithOpenGLCompositing/decklink/DeckLinkDisplayMode.h

@@ -4,6 +4,44 @@
 
 #include <string>
 
+struct FrameSize
+{
+	unsigned width = 0;
+	unsigned height = 0;
+
+	bool IsEmpty() const { return width == 0 || height == 0; }
+};
+
+inline bool operator==(const FrameSize& left, const FrameSize& right)
+{
+	return left.width == right.width && left.height == right.height;
+}
+
+inline bool operator!=(const FrameSize& left, const FrameSize& right)
+{
+	return !(left == right);
+}
+
+struct VideoFormat
+{
+	BMDDisplayMode displayMode = bmdModeHD1080p5994;
+	std::string displayName = "1080p59.94";
+};
+
+struct VideoFormatSelection
+{
+	VideoFormat input;
+	VideoFormat output;
+};
+
 std::string NormalizeModeToken(const std::string& value);
 bool ResolveConfiguredDisplayMode(const std::string& videoFormat, const std::string& frameRate, BMDDisplayMode& displayMode, std::string& displayModeName);
+bool ResolveConfiguredVideoFormat(const std::string& videoFormat, const std::string& frameRate, VideoFormat& videoMode);
+bool ResolveConfiguredVideoFormats(
+	const std::string& inputVideoFormat,
+	const std::string& inputFrameRate,
+	const std::string& outputVideoFormat,
+	const std::string& outputFrameRate,
+	VideoFormatSelection& videoModes,
+	std::string& error);
 bool FindDeckLinkDisplayMode(IDeckLinkDisplayModeIterator* iterator, BMDDisplayMode targetMode, IDeckLinkDisplayMode** foundMode);