-
Notifications
You must be signed in to change notification settings - Fork 2
/
ImagePCX.cpp
97 lines (80 loc) · 2.32 KB
/
ImagePCX.cpp
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
85
86
87
88
89
90
91
92
93
94
95
96
97
/*
Copyright (C) 1996-1997 Id Software, Inc.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "quakedef.h"
#include "Texture.h"
#include "Image.h"
typedef struct {
char manufacturer;
char version;
char encoding;
char bits_per_pixel;
unsigned short xmin, ymin, xmax, ymax;
unsigned short hres, vres;
unsigned char palette[48];
char reserved;
char color_planes;
unsigned short bytes_per_line;
unsigned short palette_type;
char filler[58];
unsigned data; // unbounded
} pcx_t;
void Image::LoadPCX(FILE *f, char *filename, Texture *tex) {
pcx_t *pcx, pcxbuf;
byte palette[768];
byte *pix, *image_rgba;
int dataByte, runLength;
int count;
fread(&pcxbuf, 1, sizeof (pcxbuf), f);
pcx = &pcxbuf;
if (pcx->manufacturer != 0x0a
|| pcx->version != 5
|| pcx->encoding != 1
|| pcx->bits_per_pixel != 8
|| pcx->xmax > 320
|| pcx->ymax > 256) {
Con_Printf("Bad pcx file: %s\n", filename);
return;
}
// seek to palette
fseek(f, -768, SEEK_END);
fread(palette, 1, 768, f);
fseek(f, sizeof (pcxbuf) - 4, SEEK_SET);
count = (pcx->xmax + 1) * (pcx->ymax + 1);
image_rgba = (byte *) malloc(count * 4);
for (int y = 0; y <= pcx->ymax; y++) {
pix = image_rgba + 4 * y * (pcx->xmax + 1);
for (int x = 0; x <= pcx->xmax;) {
dataByte = fgetc(f);
if ((dataByte & 0xC0) == 0xC0) {
runLength = dataByte & 0x3F;
dataByte = fgetc(f);
} else
runLength = 1;
while (runLength-- > 0) {
pix[0] = palette[dataByte * 3];
pix[1] = palette[dataByte * 3 + 1];
pix[2] = palette[dataByte * 3 + 2];
pix[3] = 255;
pix += 4;
x++;
}
}
}
fclose(f);
tex->width = pcx->xmax + 1;
tex->height = pcx->ymax + 1;
tex->bytesPerPixel = 4;
tex->setData(image_rgba);
}