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godotengine
GitHub Repository: godotengine/godot
 Path: blob/master/thirdparty/libktx/lib/texture.h
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/* -*- tab-width: 4; -*- */

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/* vi: set sw=2 ts=4 expandtab textwidth=70: */

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/*

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 * Copyright 2019-2020 The Khronos Group Inc.

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 * SPDX-License-Identifier: Apache-2.0

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 */

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/**

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 * @internal

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 * @file

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 * @~English

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 *

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 * @brief Declare internal ktxTexture functions for sharing between

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 *        compilation units.

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 *

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 * These functions are private and should not be used outside the library.

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 */

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#ifndef _TEXTURE_H_

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#define _TEXTURE_H_

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#include "ktx.h"

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#include "formatsize.h"

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#define DECLARE_PRIVATE(class) class ## _private* private = This->_private

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#define DECLARE_PROTECTED(class) class ## _protected* prtctd = This->_protected;

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#ifdef __cplusplus

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extern "C" {

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#endif

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typedef enum {

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    KTX_FORMAT_VERSION_ONE = 1,

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    KTX_FORMAT_VERSION_TWO = 2

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} ktxFormatVersionEnum;

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typedef ktx_size_t (* PFNCALCDATASIZELEVELS)(ktxTexture* This,

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                                             ktx_uint32_t levels);

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typedef ktx_size_t (* PFNCALCFACELODSIZE)(ktxTexture* This, ktx_uint32_t level);

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typedef ktx_size_t (* PFNCALCLEVELOFFSET)(ktxTexture* This, ktx_uint32_t level);

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typedef struct ktxTexture_vtblInt {

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    PFNCALCDATASIZELEVELS calcDataSizeLevels;

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    PFNCALCFACELODSIZE calcFaceLodSize;

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    PFNCALCLEVELOFFSET calcLevelOffset;

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} ktxTexture_vtblInt;

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#define ktxTexture_calcDataSizeLevels(This, levels) \

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            This->_protected->_vtbl.calcDataSizeLevels(This, levels);

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#define ktxTexture_calcFaceLodSize(This, level) \

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            This->_protected->_vtbl.calcFaceLodSize(This, level);

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#define ktxTexture_calcLevelOffset(This, level) \

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            This->_protected->_vtbl.calcLevelOffset(This, level);

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/**

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 * @memberof ktxTexture

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 * @~English

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 *

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 * @brief protected members of ktxTexture.

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 */

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typedef struct ktxTexture_protected {

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    ktxTexture_vtblInt _vtbl;

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    ktxFormatSize _formatSize;

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    ktx_uint32_t _typeSize;

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    ktxStream _stream;

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} ktxTexture_protected;

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#define ktxTexture_getStream(t) ((ktxStream*)(&(t)->_protected->_stream))

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#define ktxTexture1_getStream(t1) ktxTexture_getStream((ktxTexture*)t1)

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#define ktxTexture2_getStream(t2) ktxTexture_getStream((ktxTexture*)t2)

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KTX_error_code

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ktxTexture_iterateLoadedImages(ktxTexture* This, PFNKTXITERCB iterCb,

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                               void* userdata);

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KTX_error_code

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ktxTexture_iterateSourceImages(ktxTexture* This, PFNKTXITERCB iterCb,

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                               void* userdata);

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ktx_size_t ktxTexture_calcDataSizeTexture(ktxTexture* This);

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ktx_size_t ktxTexture_calcImageSize(ktxTexture* This, ktx_uint32_t level,

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                                    ktxFormatVersionEnum fv);

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ktx_bool_t ktxTexture_isActiveStream(ktxTexture* This);

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ktx_size_t ktxTexture_calcLevelSize(ktxTexture* This, ktx_uint32_t level,

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                                    ktxFormatVersionEnum fv);

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ktx_size_t ktxTexture_doCalcFaceLodSize(ktxTexture* This, ktx_uint32_t level,

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                                        ktxFormatVersionEnum fv);

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ktx_size_t ktxTexture_layerSize(ktxTexture* This, ktx_uint32_t level,

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                                ktxFormatVersionEnum fv);

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void ktxTexture_rowInfo(ktxTexture* This, ktx_uint32_t level,

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                        ktx_uint32_t* numRows, ktx_uint32_t* rowBytes,

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                        ktx_uint32_t* rowPadding);

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KTX_error_code

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ktxTexture_construct(ktxTexture* This,

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                     const ktxTextureCreateInfo* const createInfo,

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                     ktxFormatSize* formatSize);

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KTX_error_code

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ktxTexture_constructFromStream(ktxTexture* This, ktxStream* pStream,

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                               ktxTextureCreateFlags createFlags);

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void

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ktxTexture_destruct(ktxTexture* This);

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#ifdef __cplusplus

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}

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#endif

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#endif /* _TEXTURE_H_ */

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