149 lines
4.4 KiB
C
149 lines
4.4 KiB
C
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/**
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** This file is part of the Open Asset Import Library ASSIMP.
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** -------------------------------------------------------------------------
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**
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** ASSIMP is free software: you can redistribute it and/or modify it
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** under the terms of the GNU Lesser General Public License as published
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** by the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** ASSIMP is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with ASSIMP. If not, see <http://www.gnu.org/licenses/>.
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**
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** -------------------------------------------------------------------------
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**/
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/** @file Defines texture helper structures for the library
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*
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* Used for file formats that embedd their textures into the file
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*/
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#ifndef AI_TEXTURE_H_INC
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#define AI_TEXTURE_H_INC
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#include "aiTypes.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// ---------------------------------------------------------------------------
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/** \def AI_MAKE_EMBEDDED_TEXNAME
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* Used to build the reserved path name used by the material system to
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* reference textures that are embedded into their corresponding
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* model files. The parameter specifies the index of the texture
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* (zero-based, in the aiScene::mTextures array)
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*/
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// ---------------------------------------------------------------------------
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#if (!defined AI_MAKE_EMBEDDED_TEXNAME)
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# define AI_MAKE_EMBEDDED_TEXNAME(_n_) "*" # _n_
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#endif
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// ugly compiler dependent packing stuff
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#if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
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# pragma pack(push,1)
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# define PACK_STRUCT
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#elif defined( __GNUC__ )
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# define PACK_STRUCT __attribute__((packed))
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#else
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# error Compiler not supported. Never do this again.
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#endif
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// ---------------------------------------------------------------------------
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/** Helper structure to represent a texel in ARGB8888 format
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*
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* Used by aiTexture
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*/
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// ---------------------------------------------------------------------------
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struct aiTexel
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{
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unsigned char b;
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unsigned char g;
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unsigned char r;
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unsigned char a;
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} PACK_STRUCT;
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// reset packing to the original value
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#if defined(_MSC_VER) || defined(__BORLANDC__) || defined (__BCPLUSPLUS__)
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# pragma pack( pop )
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#endif
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#undef PACK_STRUCT
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// ---------------------------------------------------------------------------
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/** Helper structure to describe an embedded texture
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*
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* Normally textures are contained in external files but some file formats
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* do embedd them. Embedded
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*/
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// ---------------------------------------------------------------------------
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struct aiTexture
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{
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/** Width of the texture, in pixels
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*
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* If mHeight is zero the texture is compressedin a format
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* like JPEG. In this case mWidth specifies the size of the
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* memory area pcData is pointing to, in bytes.
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*/
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unsigned int mWidth;
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/** Height of the texture, in pixels
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*
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* If this value is zero, pcData points to an compressed texture
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* in an unknown format (e.g. JPEG).
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*/
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unsigned int mHeight;
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/** A hint from the loader to make it easier for applications
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* to determine the type of embedded compressed textures.
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*
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* If mHeight != 0 this member is undefined. Otherwise it
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* will be set to '\0\0\0\0' if the loader has no additional
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* information about the texture file format used OR the
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* file extension of the format without a leading dot.
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* E.g. 'dds\0', 'pcx\0'
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*/
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char achFormatHint[4];
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/** Data of the texture.
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*
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* Points to an array of mWidth * mHeight aiTexel's.
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* The format of the texture data is always ARGB8888 to
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* make the implementation for user of the library as easy
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* as possible. If mHeight = 0 this is a pointer to a memory
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* buffer of size mWidth containing the compressed texture
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* data. Good luck, have fun!
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*/
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aiTexel* pcData;
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#ifdef __cplusplus
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// Construction
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aiTexture ()
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: mHeight(0), mWidth(0), pcData(NULL)
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{
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achFormatHint[0] = '\0';
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achFormatHint[1] = '\0';
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achFormatHint[2] = '\0';
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achFormatHint[3] = '\0';
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}
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// Destruction
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~aiTexture ()
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{
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delete[] pcData;
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}
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#endif
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};
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#ifdef __cplusplus
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}
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#endif
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#endif // AI_TEXTURE_H_INC
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