Introduce ArFrameMetadata to relly less on virtual functions for metadata getters

openVulkanoCpp/AR/ArSessionMetadata.hpp

@@ -0,0 +1,44 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "AR/ArType.hpp"
+#include "AR/ArDepthFormat.hpp"
+#include "Math/Range.hpp"
+
+namespace openVulkanoCpp::AR
+{
+	struct ArSessionMetadata
+	{
+		ArType type;
+		ArDepthFormat depthFormat;
+		Math::Range<uint8_t> confidenceRange;
+
+		ArSessionMetadata() noexcept
+				: ArSessionMetadata(ArType::UNKNOWN, ArDepthFormat::UNAVAILABLE, {0,0})
+		{}
+
+		ArSessionMetadata(ArType type, ArDepthFormat format, Math::Range<uint8_t> confRange) noexcept
+				: type(type), depthFormat(format), confidenceRange(confRange)
+		{}
+
+		ArSessionMetadata(const std::string& dirPath);
+
+		[[nodiscard]] std::string ToXML() const;
+
+		[[nodiscard]] std::string ToYaml() const;
+
+		float GetConfidenceNormalisationFactor() const
+		{
+			return 1.0f / static_cast<float>(confidenceRange.max);
+		}
+
+		static ArSessionMetadata FromXML(const std::string& filePath);
+
+		static ArSessionMetadata FromYaml(const std::string& filePath);
+	};
+}