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framework/scene_graph/components/image/astc.h

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+/* Copyright (c) 2019-2024, Arm Limited and Contributors
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 the "License";
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "common/vk_common.h"
+#include "scene_graph/components/image.h"
+
+namespace vkb
+{
+namespace sg
+{
+struct BlockDim
+{
+	uint8_t x;
+	uint8_t y;
+	uint8_t z;
+};
+
+class Astc : public Image
+{
+  public:
+	/**
+	 * @brief Decodes an ASTC image
+	 * @param image Image to decode
+	 */
+	Astc(const Image &image);
+
+	/**
+	 * @brief Decodes ASTC data with an ASTC header
+	 * @param name Name of the component
+	 * @param data ASTC data with header
+	 */
+	Astc(const std::string &name, const std::vector<uint8_t> &data);
+
+	virtual ~Astc() = default;
+
+  private:
+	/**
+	 * @brief Decodes ASTC data
+	 * @param blockdim Dimensions of the block
+	 * @param extent Extent of the image
+	 * @param data Pointer to ASTC image data
+	 */
+	void decode(BlockDim blockdim, VkExtent3D extent, const uint8_t *data, uint32_t size);
+
+	/**
+	 * @brief Initializes ASTC library
+	 */
+	void init();
+};
+}        // namespace sg
+}        // namespace vkb