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dds.h
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dds.h
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/****************************************************************************
* dds.h
*
* Author: 2011 Daniel Jungmann <el.3d.source@googlemail.com>
* Copyright: See COPYING file that comes with this distribution
****************************************************************************/
#ifndef _DDS_H_
#define _DDS_H_
#include "platform.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifndef MAKEFOURCC
#define MAKEFOURCC(c0, c1, c2, c3) (c0 | (c1 << 8) | (c2 << 16) | (c3 << 24))
#endif /* MAKEFOURCC */
typedef struct DdsPixelFormat
{
Uint32 m_size;
Uint32 m_flags;
Uint32 m_fourcc;
Uint32 m_bit_count;
Uint32 m_red_mask;
Uint32 m_green_mask;
Uint32 m_blue_mask;
Uint32 m_alpha_mask;
} DdsPixelFormat;
typedef struct DdsCaps
{
Uint32 m_caps1;
Uint32 m_caps2;
Uint32 m_caps3;
Uint32 m_caps4;
} DdsCaps;
typedef struct DdsHeader
{
Uint32 m_size;
Uint32 m_flags;
Uint32 m_height;
Uint32 m_width;
Uint32 m_size_or_pitch;
Uint32 m_depth;
Uint32 m_mipmap_count;
Uint32 m_reserved1[11];
DdsPixelFormat m_pixel_format;
DdsCaps m_caps;
Uint32 m_reserved2;
} DdsHeader;
#define DDS_PIXEL_FORMAT_SIZE (8 * sizeof(Uint32))
#define DDS_CAPS_SIZE (4 * sizeof(Uint32))
#define DDS_HEADER_SIZE (19 * sizeof(Uint32) + DDS_PIXEL_FORMAT_SIZE + DDS_CAPS_SIZE)
/* Header caps. */
#define DDSD_CAPS 0x00000001
#define DDSD_HEIGHT 0x00000002
#define DDSD_WIDTH 0x00000004
#define DDSD_PITCH 0x00000008
#define DDSD_PIXELFORMAT 0x00001000
#define DDSD_MIPMAPCOUNT 0x00020000
#define DDSD_LINEARSIZE 0x00080000
#define DDSD_DEPTH 0x00800000
#define DDSD_MIN_FLAGS (DDSD_CAPS | DDSD_PIXELFORMAT | DDSD_WIDTH | DDSD_HEIGHT)
/* Pixel format constants. */
#define DDPF_ALPHAPIXELS 0x00000001
#define DDPF_ALPHA 0x00000002
#define DDPF_FOURCC 0x00000004
#define DDPF_RGB 0x00000040
#define DDPF_RGBA 0x00000041
#define DDPF_PALETTEINDEXED1 0x00000800
#define DDPF_PALETTEINDEXED2 0x00001000
#define DDPF_PALETTEINDEXED4 0x00000008
#define DDPF_PALETTEINDEXED8 0x00000020
#define DDPF_LUMINANCE 0x00020000
#define DDPF_ALPHAPREMULT 0x00008000
#define DDPF_NORMAL 0x80000000
#define DDSCAPS_COMPLEX 0x00000008
#define DDSCAPS_TEXTURE 0x00001000
#define DDSCAPS_MIPMAP 0x00400000
/* Cube map constants. */
#define DDSCAPS2_CUBEMAP 0x00000200
#define DDSCAPS2_CUBEMAP_POSITIVEX 0x00000400
#define DDSCAPS2_CUBEMAP_NEGATIVEX 0x00000800
#define DDSCAPS2_CUBEMAP_POSITIVEY 0x00001000
#define DDSCAPS2_CUBEMAP_NEGATIVEY 0x00002000
#define DDSCAPS2_CUBEMAP_POSITIVEZ 0x00004000
#define DDSCAPS2_CUBEMAP_NEGATIVEZ 0x00008000
#define DDSCAPS2_CUBEMAP_ALL_FACES (DDSCAPS2_CUBEMAP_POSITIVEX | DDSCAPS2_CUBEMAP_NEGATIVEX \
| DDSCAPS2_CUBEMAP_POSITIVEY | DDSCAPS2_CUBEMAP_NEGATIVEY \
| DDSCAPS2_CUBEMAP_POSITIVEZ | DDSCAPS2_CUBEMAP_NEGATIVEZ)
#define DDSCAPS2_VOLUME 0x00200000
/* Special FourCC codes. */
#define DDSFMT_DXT1 MAKEFOURCC('D', 'X', 'T', '1')
#define DDSFMT_DXT2 MAKEFOURCC('D', 'X', 'T', '2')
#define DDSFMT_DXT3 MAKEFOURCC('D', 'X', 'T', '3')
#define DDSFMT_DXT4 MAKEFOURCC('D', 'X', 'T', '4')
#define DDSFMT_DXT5 MAKEFOURCC('D', 'X', 'T', '5')
#define DDSFMT_ATI1 MAKEFOURCC('A', 'T', 'I', '1')
#define DDSFMT_ATI2 MAKEFOURCC('A', 'T', 'I', '2')
#define DDSFMT_RXGB MAKEFOURCC('R', 'X', 'G', 'B')
/* RGB formats. */
#define DDSFMT_R8G8B8 20
#define DDSFMT_A8R8G8B8 21
#define DDSFMT_X8R8G8B8 22
#define DDSFMT_R5G6B5 23
#define DDSFMT_X1R5G5B5 24
#define DDSFMT_A1R5G5B5 25
#define DDSFMT_A4R4G4B4 26
#define DDSFMT_R3G3B2 27
#define DDSFMT_A8 28
#define DDSFMT_A8R3G3B2 29
#define DDSFMT_X4R4G4B4 30
#define DDSFMT_A2B10G10R10 31
#define DDSFMT_A8B8G8R8 32
#define DDSFMT_X8B8G8R8 33
#define DDSFMT_G16R16 34
#define DDSFMT_A2R10G10B10 35
#define DDSFMT_A16B16G16R16 36
/* Palette formats. */
#define DDSFMT_A8P8 40
#define DDSFMT_P8 41
/* Luminance formats. */
#define DDSFMT_L8 50
#define DDSFMT_A8L8 51
#define DDSFMT_A4L4 52
/* Floating point formats. */
#define DDSFMT_R16F 111
#define DDSFMT_G16R16F 112
#define DDSFMT_A16B16G16R16F 113
#define DDSFMT_R32F 114
#define DDSFMT_G32R32F 115
#define DDSFMT_A32B32G32R32F 116
/* Magic number of dds files. */
#define DDSMAGIC MAKEFOURCC('D', 'D', 'S', ' ')
typedef struct DXTColorBlock
{
Uint16 m_colors[2];
Uint8 m_indices[4];
} DXTColorBlock;
typedef struct DXTExplicitAlphaBlock
{
Uint16 m_alphas[4];
} DXTExplicitAlphaBlock;
typedef struct DXTInterpolatedAlphaBlock
{
Uint8 m_alphas[2];
Uint8 m_indices[6];
} DXTInterpolatedAlphaBlock;
void unpack_dxt1(DXTColorBlock *block, Uint8 *values);
void unpack_dxt3(DXTExplicitAlphaBlock *alpha_block, DXTColorBlock *color_block, Uint8 *values);
void unpack_dxt5(DXTInterpolatedAlphaBlock *alpha_block, DXTColorBlock *color_block, Uint8 *values);
void unpack_ati1(DXTInterpolatedAlphaBlock *block, Uint8 *values);
void unpack_ati2(DXTInterpolatedAlphaBlock *first_block, DXTInterpolatedAlphaBlock *second_block,
Uint8 *values);
#ifdef __cplusplus
} // extern "C"
#endif
#endif /* _DDS_H_ */