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
|
/*
* Example program for the JPGalleg library
*
* Version 2.6, by Angelo Mottola, 2000-2006
*
* This example shows how to save a JPG image to disk.
*/
#include <allegro.h>
#include <jpgalleg.h>
int
main(void)
{
BITMAP *bmp;
allegro_init();
install_keyboard();
jpgalleg_init();
set_color_depth(32);
if (set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0)) {
set_color_depth(16);
if (set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0)) {
set_color_depth(15);
if (set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0)) {
allegro_message("Unable to init truecolor 640x480 gfx mode: %s", allegro_error);
return -1;
}
}
}
clear(screen);
bmp = load_bitmap("cat.tga", NULL);
if (!bmp) {
set_gfx_mode(GFX_TEXT, 0, 0, 0, 0);
allegro_message("Error loading cat.tga\n");
return -1;
}
blit(bmp, screen, 0, 0, 0, 0, bmp->w, bmp->h);
readkey();
if (save_jpg("savedcat.jpg", bmp, NULL)) {
set_gfx_mode(GFX_TEXT, 0, 0, 0, 0);
allegro_message("Error saving savedcat.jpg (error code %d)\n", jpgalleg_error);
return -1;
}
destroy_bitmap(bmp);
return 0;
}
END_OF_MAIN();
|
