| 1 | /* |
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| 2 | * commin.h: common stuff |
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| 3 | * $Id$ |
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| 4 | * |
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| 5 | * Copyright: (c) 2004 Sam Hocevar <sam@zoy.org> |
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| 6 | * This program is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the Do What The Fuck You Want To |
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| 8 | * Public License as published by Banlu Kemiyatorn. See |
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| 9 | * http://sam.zoy.org/projects/COPYING.WTFPL for more details. |
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| 10 | */ |
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| 11 | |
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| 12 | /* image structure */ |
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| 13 | struct image |
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| 14 | { |
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| 15 | int width, height, pitch, channels; |
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| 16 | unsigned char *pixels; |
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| 17 | void *priv; |
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| 18 | }; |
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| 19 | |
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| 20 | /* font structure */ |
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| 21 | struct font |
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| 22 | { |
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| 23 | struct image *img; |
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| 24 | struct glyph |
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| 25 | { |
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| 26 | int xmin, xmax, ymin, ymax; |
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| 27 | int count; /* Black pixel count */ |
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| 28 | char c; |
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| 29 | } *glyphs; |
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| 30 | int size; |
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| 31 | }; |
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| 32 | |
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| 33 | /* global variables */ |
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| 34 | extern char *argv0; |
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| 35 | extern char *share; |
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| 36 | |
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| 37 | /* debug function */ |
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| 38 | void dprintf(const char *fmt, ...); |
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| 39 | |
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| 40 | /* available CAPTCHA decoders */ |
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| 41 | char *decode_authimage(struct image *img); |
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| 42 | char *decode_clubic(struct image *img); |
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| 43 | char *decode_linuxfr(struct image *img); |
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| 44 | char *decode_phpbb(struct image *img); |
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| 45 | char *decode_scode(struct image *img); |
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| 46 | char *decode_slashdot(struct image *img); |
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| 47 | char *decode_vbulletin(struct image *img); |
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| 48 | char *decode_xanga(struct image *img); |
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| 49 | char *decode_test(struct image *img); |
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| 50 | |
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| 51 | /* image operations */ |
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| 52 | struct image *image_load(const char *name); |
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| 53 | struct image *image_new(int width, int height); |
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| 54 | struct image *image_dup(struct image *img); |
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| 55 | void image_free(struct image *img); |
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| 56 | void image_save(struct image *img, const char *name); |
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| 57 | void image_swap(struct image *img1, struct image *img2); |
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| 58 | int getgray(struct image *img, int x, int y, int *g); |
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| 59 | int getpixel(struct image *img, int x, int y, int *r, int *g, int *b); |
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| 60 | int setpixel(struct image *img, int x, int y, int r, int g, int b); |
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| 61 | |
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| 62 | /* font operations */ |
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| 63 | struct font *font_load_fixed(char *file, char *chars); |
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| 64 | struct font *font_load_variable(char *file, char *chars); |
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| 65 | void font_free(struct font *font); |
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| 66 | |
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| 67 | /* image filters */ |
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| 68 | void filter_flood_fill(struct image *img, int x, int y, int r, int g, int b); |
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| 69 | void filter_fill_holes(struct image *img); |
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| 70 | void filter_scale(struct image *img, float ratio); |
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| 71 | void filter_black_stuff(struct image *img); |
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| 72 | void filter_detect_lines(struct image *img); |
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| 73 | void filter_equalize(struct image *img, int threshold); |
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| 74 | void filter_trick(struct image *img); |
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| 75 | void filter_smooth(struct image *img); |
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| 76 | void filter_median(struct image *img); |
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| 77 | void filter_contrast(struct image *img); |
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| 78 | void filter_crop(struct image *img, int xmin, int ymin, int xmax, int ymax); |
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| 79 | int filter_count(struct image *img); |
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| 80 | |
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