1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
//-----------------------------------------------------------------------------
//
// ImageLib Sources
// Copyright (C) 2000-2002 by Denton Woods
// Last modified: 05/25/2002 <--Y2K Compliant! =]
//
// Filename: src-IL/include/sgi.h
//
// Description: Reads from and writes to SGI graphics files.
//
//-----------------------------------------------------------------------------
#ifndef SGI_H
#define SGI_H
#include "il_internal.h"
typedef struct iSgiHeader
{
ILshort MagicNum; // IRIS image file magic number
ILbyte Storage; // Storage format
ILbyte Bpc; // Number of bytes per pixel channel
ILushort Dim; // Number of dimensions
ILushort XSize; // X size in pixels
ILushort YSize; // Y size in pixels
ILushort ZSize; // Number of channels
ILint PixMin; // Minimum pixel value
ILint PixMax; // Maximum pixel value
ILint Dummy1; // Ignored
ILbyte Name[80]; // Image name
ILint ColMap; // Colormap ID
ILbyte Dummy[404]; // Ignored
} IL_PACKSTRUCT iSgiHeader;
// Sgi format #define's
#define SGI_VERBATIM 0
#define SGI_RLE 1
#define SGI_MAGICNUM 474
// Sgi colormap types
#define SGI_COLMAP_NORMAL 0
#define SGI_COLMAP_DITHERED 1
#define SGI_COLMAP_SCREEN 2
#define SGI_COLMAP_COLMAP 3
// Internal functions
ILboolean iIsValidSgi(ILvoid);
ILboolean iCheckSgi(iSgiHeader *Header);
ILboolean iLoadSgiInternal(ILvoid);
ILboolean iSaveSgiInternal(ILvoid);
ILvoid iExpandScanLine(ILubyte *Dest, ILubyte *Src, ILuint Bpc);
ILint iGetScanLine(ILubyte *ScanLine, iSgiHeader *Head, ILuint Length);
ILint iGetScanLineFast(ILubyte *ScanLine, iSgiHeader *Head, ILuint Length, ILubyte*);
ILvoid sgiSwitchData(ILubyte *Data, ILuint SizeOfData);
ILboolean iNewSgi(iSgiHeader *Head);
ILboolean iReadNonRleSgi(iSgiHeader *Head);
ILboolean iReadRleSgi(iSgiHeader *Head);
ILboolean iSaveRleSgi(ILubyte *Data);
#endif//SGI_H
|
