implement png image loader and refactor existing loader classes

openVulkanoCpp/Image/ImageLoaderPng.cpp

@@ -0,0 +1,26 @@
+/*
+ * 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/.
+ */
+
+#include "ImageLoaderPng.hpp"
+#include <Data/Containers/Array.hpp>
+#include <fstream>
+#include <cstring>
+
+namespace OpenVulkano::Image
+{
+	std::unique_ptr<Image> ImageLoaderPng::loadFromFile(const std::string& filePath)
+	{
+		std::ifstream file(filePath, std::ios::binary);
+		if (!file) { throw std::runtime_error("Could not open file: " + filePath); }
+		std::vector<uint8_t> buffer((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
+		return loadData(buffer.data(), static_cast<int>(buffer.size()));
+	}
+
+	std::unique_ptr<Image> ImageLoaderPng::loadFromMemory(const std::vector<uint8_t>& buffer)
+	{
+		return loadData(buffer.data(), static_cast<int>(buffer.size()));
+	}
+}