Add ktx

2026-06-14 19:09:18 +01:00
parent 14bd1a9271
commit 13fa90a0e9
3958 changed files with 999286 additions and 4 deletions
@@ -0,0 +1,70 @@
+// Copyright 2019 Andreas Atteneder, All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#if defined(KHRONOS_STATIC)
+  #define KTX_BASISU_API
+#elif defined(_WIN32)
+  #if !defined(KTX_BASISU_API)
+    #define KTX_BASISU_API __declspec(dllimport)
+  #endif
+#elif defined(__ANDROID__)
+  #define KTX_BASISU_API __attribute__((visibility("default")))
+#else
+  #define KTX_BASISU_API
+#endif
+
+#include <basisu_transcoder.h>
+
+using namespace basist;
+
+class basis_file
+{
+    unsigned int m_magic = 0;
+    basisu_transcoder m_transcoder;
+    const uint8_t *m_file;
+    uint32_t byteLength;
+    basisu_file_info fileinfo;
+
+public:
+    basis_file()
+    :
+    m_transcoder()
+    {}
+    
+    bool open(const uint8_t *buffer, uint32_t newByteLength);
+    void close();
+    uint32_t getHasAlpha();
+    uint32_t getNumImages();
+    uint32_t getNumLevels(uint32_t image_index);
+    uint32_t getImageWidth(uint32_t image_index, uint32_t level_index);
+    uint32_t getImageHeight(uint32_t image_index, uint32_t level_index);
+    uint32_t getYFlip();
+    uint32_t getIsEtc1s();
+    basis_texture_type getTextureType();
+    uint32_t getImageTranscodedSizeInBytes(uint32_t image_index, uint32_t level_index, uint32_t format);
+    uint32_t startTranscoding();
+    uint32_t transcodeImage(void* dst, uint32_t dst_size, uint32_t image_index, uint32_t level_index, uint32_t format, uint32_t pvrtc_wrap_addressing, uint32_t get_alpha_for_opaque_formats);
+};
+
+extern "C" {
+KTX_BASISU_API void ktx_basisu_basis_init();
+#ifdef KTX_BASISU_C_BINDINGS
+KTX_BASISU_API basis_file* ktx_basisu_create_basis();
+KTX_BASISU_API uint32_t ktx_basisu_open_basis( basis_file* basis, const uint8_t * data, uint32_t length );
+KTX_BASISU_API void ktx_basisu_close_basis( basis_file* basis );
+KTX_BASISU_API void ktx_basisu_delete_basis( basis_file* basis );
+KTX_BASISU_API uint32_t ktx_basisu_getHasAlpha( basis_file* basis );
+KTX_BASISU_API uint32_t ktx_basisu_getNumImages( basis_file* basis );
+KTX_BASISU_API uint32_t ktx_basisu_getNumLevels( basis_file* basis, uint32_t image_index);
+KTX_BASISU_API uint32_t ktx_basisu_getImageWidth( basis_file* basis, uint32_t image_index, uint32_t level_index);
+KTX_BASISU_API uint32_t ktx_basisu_getImageHeight( basis_file* basis, uint32_t image_index, uint32_t level_index);
+KTX_BASISU_API uint32_t ktx_basisu_get_y_flip( basis_file* basis );
+KTX_BASISU_API uint32_t ktx_basisu_get_is_etc1s( basis_file* basis );
+KTX_BASISU_API basis_texture_type ktx_basisu_get_texture_type( basis_file* basis );
+KTX_BASISU_API uint32_t ktx_basisu_getImageTranscodedSizeInBytes( basis_file* basis, uint32_t image_index, uint32_t level_index, uint32_t format);
+KTX_BASISU_API uint32_t ktx_basisu_startTranscoding( basis_file* basis );
+KTX_BASISU_API uint32_t ktx_basisu_transcodeImage( basis_file* basis, void* dst, uint32_t dst_size, uint32_t image_index, uint32_t level_index, uint32_t format, uint32_t pvrtc_wrap_addressing, uint32_t get_alpha_for_opaque_formats);
+#endif
+}