mirror of
https://github.com/UberGames/GtkRadiant.git
synced 2024-11-27 06:02:29 +00:00
12b372f89c
git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant@1 8a3a26a2-13c4-0310-b231-cf6edde360e5
250 lines
5 KiB
C
250 lines
5 KiB
C
/* -----------------------------------------------------------------------------
|
|
|
|
DDS Library
|
|
|
|
Based on code from Nvidia's DDS example:
|
|
http://www.nvidia.com/object/dxtc_decompression_code.html
|
|
|
|
Copyright (c) 2003 Randy Reddig
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without modification,
|
|
are permitted provided that the following conditions are met:
|
|
|
|
Redistributions of source code must retain the above copyright notice, this list
|
|
of conditions and the following disclaimer.
|
|
|
|
Redistributions in binary form must reproduce the above copyright notice, this
|
|
list of conditions and the following disclaimer in the documentation and/or
|
|
other materials provided with the distribution.
|
|
|
|
Neither the names of the copyright holders nor the names of its contributors may
|
|
be used to endorse or promote products derived from this software without
|
|
specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
|
|
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
----------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
/* marker */
|
|
#ifndef DDSLIB_H
|
|
#define DDSLIB_H
|
|
|
|
|
|
|
|
/* dependencies */
|
|
#include <stdio.h>
|
|
#include <memory.h>
|
|
|
|
|
|
|
|
/* c++ marker */
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
|
|
|
|
/* dds definition */
|
|
typedef enum
|
|
{
|
|
DDS_PF_ARGB8888,
|
|
DDS_PF_DXT1,
|
|
DDS_PF_DXT2,
|
|
DDS_PF_DXT3,
|
|
DDS_PF_DXT4,
|
|
DDS_PF_DXT5,
|
|
DDS_PF_UNKNOWN
|
|
}
|
|
ddsPF_t;
|
|
|
|
|
|
/* 16bpp stuff */
|
|
#define DDS_LOW_5 0x001F;
|
|
#define DDS_MID_6 0x07E0;
|
|
#define DDS_HIGH_5 0xF800;
|
|
#define DDS_MID_555 0x03E0;
|
|
#define DDS_HI_555 0x7C00;
|
|
|
|
|
|
/* structures */
|
|
typedef struct ddsColorKey_s
|
|
{
|
|
unsigned int colorSpaceLowValue;
|
|
unsigned int colorSpaceHighValue;
|
|
}
|
|
ddsColorKey_t;
|
|
|
|
|
|
typedef struct ddsCaps_s
|
|
{
|
|
unsigned int caps1;
|
|
unsigned int caps2;
|
|
unsigned int caps3;
|
|
unsigned int caps4;
|
|
}
|
|
ddsCaps_t;
|
|
|
|
|
|
typedef struct ddsMultiSampleCaps_s
|
|
{
|
|
unsigned short flipMSTypes;
|
|
unsigned short bltMSTypes;
|
|
}
|
|
ddsMultiSampleCaps_t;
|
|
|
|
|
|
typedef struct ddsPixelFormat_s
|
|
{
|
|
unsigned int size;
|
|
unsigned int flags;
|
|
unsigned int fourCC;
|
|
union
|
|
{
|
|
unsigned int rgbBitCount;
|
|
unsigned int yuvBitCount;
|
|
unsigned int zBufferBitDepth;
|
|
unsigned int alphaBitDepth;
|
|
unsigned int luminanceBitCount;
|
|
unsigned int bumpBitCount;
|
|
unsigned int privateFormatBitCount;
|
|
};
|
|
union
|
|
{
|
|
unsigned int rBitMask;
|
|
unsigned int yBitMask;
|
|
unsigned int stencilBitDepth;
|
|
unsigned int luminanceBitMask;
|
|
unsigned int bumpDuBitMask;
|
|
unsigned int operations;
|
|
};
|
|
union
|
|
{
|
|
unsigned int gBitMask;
|
|
unsigned int uBitMask;
|
|
unsigned int zBitMask;
|
|
unsigned int bumpDvBitMask;
|
|
ddsMultiSampleCaps_t multiSampleCaps;
|
|
};
|
|
union
|
|
{
|
|
unsigned int bBitMask;
|
|
unsigned int vBitMask;
|
|
unsigned int stencilBitMask;
|
|
unsigned int bumpLuminanceBitMask;
|
|
};
|
|
union
|
|
{
|
|
unsigned int rgbAlphaBitMask;
|
|
unsigned int yuvAlphaBitMask;
|
|
unsigned int luminanceAlphaBitMask;
|
|
unsigned int rgbZBitMask;
|
|
unsigned int yuvZBitMask;
|
|
};
|
|
}
|
|
ddsPixelFormat_t;
|
|
|
|
|
|
typedef struct ddsBuffer_s
|
|
{
|
|
/* magic: 'dds ' */
|
|
char magic[ 4 ];
|
|
|
|
/* directdraw surface */
|
|
unsigned int size;
|
|
unsigned int flags;
|
|
unsigned int height;
|
|
unsigned int width;
|
|
union
|
|
{
|
|
int pitch;
|
|
unsigned int linearSize;
|
|
};
|
|
unsigned int backBufferCount;
|
|
union
|
|
{
|
|
unsigned int mipMapCount;
|
|
unsigned int refreshRate;
|
|
unsigned int srcVBHandle;
|
|
};
|
|
unsigned int alphaBitDepth;
|
|
unsigned int reserved;
|
|
void *surface;
|
|
union
|
|
{
|
|
ddsColorKey_t ckDestOverlay;
|
|
unsigned int emptyFaceColor;
|
|
};
|
|
ddsColorKey_t ckDestBlt;
|
|
ddsColorKey_t ckSrcOverlay;
|
|
ddsColorKey_t ckSrcBlt;
|
|
union
|
|
{
|
|
ddsPixelFormat_t pixelFormat;
|
|
unsigned int fvf;
|
|
};
|
|
ddsCaps_t ddsCaps;
|
|
unsigned int textureStage;
|
|
|
|
/* data (Varying size) */
|
|
unsigned char data[ 4 ];
|
|
}
|
|
ddsBuffer_t;
|
|
|
|
|
|
typedef struct ddsColorBlock_s
|
|
{
|
|
unsigned short colors[ 2 ];
|
|
unsigned char row[ 4 ];
|
|
}
|
|
ddsColorBlock_t;
|
|
|
|
|
|
typedef struct ddsAlphaBlockExplicit_s
|
|
{
|
|
unsigned short row[ 4 ];
|
|
}
|
|
ddsAlphaBlockExplicit_t;
|
|
|
|
|
|
typedef struct ddsAlphaBlock3BitLinear_s
|
|
{
|
|
unsigned char alpha0;
|
|
unsigned char alpha1;
|
|
unsigned char stuff[ 6 ];
|
|
}
|
|
ddsAlphaBlock3BitLinear_t;
|
|
|
|
|
|
typedef struct ddsColor_s
|
|
{
|
|
unsigned char r, g, b, a;
|
|
}
|
|
ddsColor_t;
|
|
|
|
|
|
|
|
/* public functions */
|
|
int DDSGetInfo( ddsBuffer_t *dds, int *width, int *height, ddsPF_t *pf );
|
|
int DDSDecompress( ddsBuffer_t *dds, unsigned char *pixels );
|
|
|
|
|
|
|
|
/* end marker */
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|