source: pwntcha/trunk/src/common.h @ 413

Last change on this file since 413 was 413, checked in by Sam Hocevar, 18 years ago
  • fixed a bug in the SDL code: alpha mask should be set to 0.
  • implemented filter_black_stuff to remove black dots.
  • allow threshold to be negative in filter_equalize; in this case, invert colours.
  • implemented filter_crop.
  • Property svn:keywords set to Id
File size: 1.8 KB
2 * commin.h: common stuff
3 * $Id: common.h 413 2005-01-04 17:06:04Z sam $
4 *
5 * Copyright: (c) 2004 Sam Hocevar <>
6 *   This program is free software; you can redistribute it and/or
7 *   modify it under the terms of the Do What The Fuck You Want To
8 *   Public License as published by Banlu Kemiyatorn. See
9 * for more details.
10 */
12/* image structure */
13struct image
15    int width, height, pitch, channels;
16    unsigned char *pixels;
17    void *priv;
20/* debug function */
21void dprintf(const char *fmt, ...);
23/* available CAPTCHA decoders */
24char *decode_phpbb(struct image *img);
25char *decode_scode(struct image *img);
26char *decode_slashdot(struct image *img);
27char *decode_test(struct image *img);
29/* image operations */
30struct image *image_load(const char *name);
31struct image *image_new(int width, int height);
32void image_free(struct image *img);
33void image_save(struct image *img, const char *name);
34void image_display(struct image *img);
35int getgray(struct image *img, int x, int y, int *g);
36int getpixel(struct image *img, int x, int y, int *r, int *g, int *b);
37int setpixel(struct image *img, int x, int y, int r, int g, int b);
39/* image filters */
40void filter_flood_fill(struct image *img, int x, int y, int r, int g, int b);
41struct image *filter_fill_holes(struct image *img);
42struct image *filter_dup(struct image *img);
43struct image *filter_black_stuff(struct image *img);
44struct image *filter_detect_lines(struct image *img);
45struct image *filter_equalize(struct image *img, int threshold);
46struct image *filter_trick(struct image *img);
47struct image *filter_smooth(struct image *img);
48struct image *filter_median(struct image *img);
49struct image *filter_contrast(struct image *img);
50struct image *filter_crop(struct image *img,
51                          int xmin, int ymin, int xmax, int ymax);
52int filter_count(struct image *img);
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