initial commit, 4.5 stable

thirdparty/libktx/lib/texture.h

@@ -0,0 +1,108 @@
+/* -*- tab-width: 4; -*- */
+/* vi: set sw=2 ts=4 expandtab textwidth=70: */
+
+/*
+ * Copyright 2019-2020 The Khronos Group Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * @internal
+ * @file
+ * @~English
+ *
+ * @brief Declare internal ktxTexture functions for sharing between
+ *        compilation units.
+ *
+ * These functions are private and should not be used outside the library.
+ */
+
+#ifndef _TEXTURE_H_
+#define _TEXTURE_H_
+
+#include "ktx.h"
+#include "formatsize.h"
+
+#define DECLARE_PRIVATE(class) class ## _private* private = This->_private
+#define DECLARE_PROTECTED(class) class ## _protected* prtctd = This->_protected;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    KTX_FORMAT_VERSION_ONE = 1,
+    KTX_FORMAT_VERSION_TWO = 2
+} ktxFormatVersionEnum;
+
+typedef ktx_size_t (* PFNCALCDATASIZELEVELS)(ktxTexture* This,
+                                             ktx_uint32_t levels);
+typedef ktx_size_t (* PFNCALCFACELODSIZE)(ktxTexture* This, ktx_uint32_t level);
+typedef ktx_size_t (* PFNCALCLEVELOFFSET)(ktxTexture* This, ktx_uint32_t level);
+typedef struct ktxTexture_vtblInt {
+    PFNCALCDATASIZELEVELS calcDataSizeLevels;
+    PFNCALCFACELODSIZE calcFaceLodSize;
+    PFNCALCLEVELOFFSET calcLevelOffset;
+} ktxTexture_vtblInt;
+
+#define ktxTexture_calcDataSizeLevels(This, levels) \
+            This->_protected->_vtbl.calcDataSizeLevels(This, levels);
+#define ktxTexture_calcFaceLodSize(This, level) \
+            This->_protected->_vtbl.calcFaceLodSize(This, level);
+#define ktxTexture_calcLevelOffset(This, level) \
+            This->_protected->_vtbl.calcLevelOffset(This, level);
+
+/**
+ * @memberof ktxTexture
+ * @~English
+ *
+ * @brief protected members of ktxTexture.
+ */
+typedef struct ktxTexture_protected {
+    ktxTexture_vtblInt _vtbl;
+    ktxFormatSize _formatSize;
+    ktx_uint32_t _typeSize;
+    ktxStream _stream;
+} ktxTexture_protected;
+
+#define ktxTexture_getStream(t) ((ktxStream*)(&(t)->_protected->_stream))
+#define ktxTexture1_getStream(t1) ktxTexture_getStream((ktxTexture*)t1)
+#define ktxTexture2_getStream(t2) ktxTexture_getStream((ktxTexture*)t2)
+
+KTX_error_code
+ktxTexture_iterateLoadedImages(ktxTexture* This, PFNKTXITERCB iterCb,
+                               void* userdata);
+KTX_error_code
+ktxTexture_iterateSourceImages(ktxTexture* This, PFNKTXITERCB iterCb,
+                               void* userdata);
+
+ktx_size_t ktxTexture_calcDataSizeTexture(ktxTexture* This);
+ktx_size_t ktxTexture_calcImageSize(ktxTexture* This, ktx_uint32_t level,
+                                    ktxFormatVersionEnum fv);
+ktx_bool_t ktxTexture_isActiveStream(ktxTexture* This);
+ktx_size_t ktxTexture_calcLevelSize(ktxTexture* This, ktx_uint32_t level,
+                                    ktxFormatVersionEnum fv);
+ktx_size_t ktxTexture_doCalcFaceLodSize(ktxTexture* This, ktx_uint32_t level,
+                                        ktxFormatVersionEnum fv);
+ktx_size_t ktxTexture_layerSize(ktxTexture* This, ktx_uint32_t level,
+                                ktxFormatVersionEnum fv);
+void ktxTexture_rowInfo(ktxTexture* This, ktx_uint32_t level,
+                        ktx_uint32_t* numRows, ktx_uint32_t* rowBytes,
+                        ktx_uint32_t* rowPadding);
+KTX_error_code
+ktxTexture_construct(ktxTexture* This,
+                     const ktxTextureCreateInfo* const createInfo,
+                     ktxFormatSize* formatSize);
+
+KTX_error_code
+ktxTexture_constructFromStream(ktxTexture* This, ktxStream* pStream,
+                               ktxTextureCreateFlags createFlags);
+
+void
+ktxTexture_destruct(ktxTexture* This);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _TEXTURE_H_ */