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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* TGA Image read support
* Copyright (C) 2005 Andrew Ireland, Jon Keto, Michael Beal
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#define TGA_LINE_LENGTH 1024
#ifndef __TGA_H
#define __TGA_H 1
#include "gd.h"
#include "gdhelpers.h"
#ifndef O_BYTE
#define O_BYTE 1
typedef int byte;
#endif
#ifndef O_SHORT_INT
#define O_SHORT_INT 1
typedef int short_int;
#endif
typedef struct oTga_
{
byte identsize; // size of ID field that follows 18 byte header (0 usually)
byte colormaptype; // type of colour map 0=none, 1=has palette [IGNORED] Adrian requested no support
byte imagetype; // type of image 0=none,1=indexed,2=rgb,3=grey,+8=rle packed
int colormapstart; // first colour map entry in palette [IGNORED] Adrian requested no support
int colormaplength; // number of colours in palette [IGNORED] Adrian requested no support
byte colormapbits; // number of bits per palette entry 15,16,24,32 [IGNORED] Adrian requested no support
int xstart; // image x origin
int ystart; // image y origin
int width; // image width in pixels
int height; // image height in pixels
byte bits; // image bits per pixel 8,16,24,32
byte alphabits; // alpha bits (low 4bits of header 17)
byte fliph; // horizontal or vertical
byte flipv; // flip
char *ident; // identifcation tag string
int *bitmap; // bitmap data
} oTga;
#define TGA_TYPE_NO_IMAGE 0
#define TGA_TYPE_INDEXED 1
#define TGA_TYPE_RGB 2
#define TGA_TYPE_GREYSCALE 3
#define TGA_TYPE_INDEXED_RLE 9
#define TGA_TYPE_RGB_RLE 10
#define TGA_TYPE_GREYSCALE_RLE 11
#define TGA_TYPE_INDEXED_HUFFMAN_DELTA_RLE 32
#define TGA_TYPE_RGB_HUFFMAN_DELTA_QUADTREE_RLE 33
#define TGA_BPP_8 8
#define TGA_BPP_16 16
#define TGA_BPP_24 24
#define TGA_BPP_32 32
#define TGA_RLE_FLAG 128
int read_header_tga(gdIOCtx *ctx, oTga *tga);
int read_image_tga(gdIOCtx *ctx, oTga *tga);
void free_tga(oTga *tga);
#endif //__TGA_H
|
