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git-svn-id: svn://svn.icculus.org/netradiant/trunk@1 61c419a2-8eb2-4b30-bcec-8cead039b335
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rpolzer
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libs/ddslib.h
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libs/ddslib.h
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/* -----------------------------------------------------------------------------
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DDS Library
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Based on code from Nvidia's DDS example:
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http://www.nvidia.com/object/dxtc_decompression_code.html
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Copyright (c) 2003 Randy Reddig
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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Neither the names of the copyright holders nor the names of its contributors may
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be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------------- */
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/* marker */
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#ifndef DDSLIB_H
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#define DDSLIB_H
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/* dependencies */
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#include <stdio.h>
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#include <memory.h>
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/* c++ marker */
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* dds definition */
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typedef enum
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{
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DDS_PF_ARGB8888,
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DDS_PF_DXT1,
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DDS_PF_DXT2,
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DDS_PF_DXT3,
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DDS_PF_DXT4,
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DDS_PF_DXT5,
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DDS_PF_UNKNOWN
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}
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ddsPF_t;
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/* 16bpp stuff */
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#define DDS_LOW_5 0x001F;
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#define DDS_MID_6 0x07E0;
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#define DDS_HIGH_5 0xF800;
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#define DDS_MID_555 0x03E0;
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#define DDS_HI_555 0x7C00;
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/* structures */
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typedef struct ddsColorKey_s
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{
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unsigned int colorSpaceLowValue;
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unsigned int colorSpaceHighValue;
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}
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ddsColorKey_t;
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typedef struct ddsCaps_s
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{
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unsigned int caps1;
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unsigned int caps2;
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unsigned int caps3;
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unsigned int caps4;
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}
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ddsCaps_t;
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typedef struct ddsMultiSampleCaps_s
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{
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unsigned short flipMSTypes;
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unsigned short bltMSTypes;
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}
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ddsMultiSampleCaps_t;
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typedef struct ddsPixelFormat_s
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{
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unsigned int size;
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unsigned int flags;
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unsigned int fourCC;
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union
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{
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unsigned int rgbBitCount;
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unsigned int yuvBitCount;
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unsigned int zBufferBitDepth;
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unsigned int alphaBitDepth;
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unsigned int luminanceBitCount;
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unsigned int bumpBitCount;
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unsigned int privateFormatBitCount;
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};
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union
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{
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unsigned int rBitMask;
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unsigned int yBitMask;
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unsigned int stencilBitDepth;
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unsigned int luminanceBitMask;
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unsigned int bumpDuBitMask;
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unsigned int operations;
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};
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union
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{
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unsigned int gBitMask;
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unsigned int uBitMask;
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unsigned int zBitMask;
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unsigned int bumpDvBitMask;
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ddsMultiSampleCaps_t multiSampleCaps;
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};
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union
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{
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unsigned int bBitMask;
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unsigned int vBitMask;
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unsigned int stencilBitMask;
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unsigned int bumpLuminanceBitMask;
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};
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union
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{
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unsigned int rgbAlphaBitMask;
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unsigned int yuvAlphaBitMask;
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unsigned int luminanceAlphaBitMask;
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unsigned int rgbZBitMask;
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unsigned int yuvZBitMask;
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};
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}
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ddsPixelFormat_t;
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typedef struct ddsBuffer_s
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{
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/* magic: 'dds ' */
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char magic[ 4 ];
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/* directdraw surface */
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unsigned int size;
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unsigned int flags;
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unsigned int height;
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unsigned int width;
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union
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{
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int pitch;
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unsigned int linearSize;
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};
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unsigned int backBufferCount;
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union
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{
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unsigned int mipMapCount;
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unsigned int refreshRate;
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unsigned int srcVBHandle;
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};
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unsigned int alphaBitDepth;
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unsigned int reserved;
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void *surface;
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union
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{
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ddsColorKey_t ckDestOverlay;
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unsigned int emptyFaceColor;
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};
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ddsColorKey_t ckDestBlt;
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ddsColorKey_t ckSrcOverlay;
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ddsColorKey_t ckSrcBlt;
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union
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{
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ddsPixelFormat_t pixelFormat;
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unsigned int fvf;
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};
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ddsCaps_t ddsCaps;
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unsigned int textureStage;
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/* data (Varying size) */
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unsigned char data[ 4 ];
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}
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ddsBuffer_t;
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typedef struct ddsColorBlock_s
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{
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unsigned short colors[ 2 ];
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unsigned char row[ 4 ];
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}
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ddsColorBlock_t;
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typedef struct ddsAlphaBlockExplicit_s
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{
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unsigned short row[ 4 ];
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}
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ddsAlphaBlockExplicit_t;
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typedef struct ddsAlphaBlock3BitLinear_s
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{
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unsigned char alpha0;
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unsigned char alpha1;
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unsigned char stuff[ 6 ];
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}
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ddsAlphaBlock3BitLinear_t;
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typedef struct ddsColor_s
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{
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unsigned char r, g, b, a;
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}
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ddsColor_t;
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/* public functions */
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int DDSGetInfo( ddsBuffer_t *dds, int *width, int *height, ddsPF_t *pf );
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int DDSDecompress( ddsBuffer_t *dds, unsigned char *pixels );
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/* end marker */
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#ifdef __cplusplus
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}
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#endif
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#endif
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