/* bomb - automatic interactive visual stimulation Copyright (C) 1995 Scott Draves 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* simple image package. images are uniformly chunky 32 bit. subimages are handled (basically instead of rect struct) allocation is bizarre, redo */ typedef struct {unsigned char r, g, b, a;} Pixel; #define alpha_mask 0xff000000 #define rgb_mask 0x00ffffff #define alpha_solid 0xff #define alpha_clear 0x00 typedef struct Image { Pixel *pixels; /* only a freeable pointer if NULL==parent */ int width, height, stride; int origin_x, origin_y; /* vector from origin of parent to this image */ struct Image *parent; } Image; #define TCL_ERROR 0 #define TCL_OK 1 /* memory mgt */ extern void image_init(Image *); extern Image *image_allocate(Image *, int, int); extern Image *image_subimage(Image *image, Image *of, int x, int y, int w, int h); extern void image_destroy(Image *); extern Image *image_random_tile(Image *image, Image *of, int size); extern void image_mean_pixel(Image *img, Pixel *pix); /* io */ extern int image_read(Image *, char *); /* ops */ extern void image_filter_down(Image *from, Image *to); extern void image_blit(Image *from, Image *to); extern void image_blit_masked(Image *from, Image *to); extern void image_fill(Image *, Pixel); extern void image_random(Image *); /* associative search */ extern void image_match_fast(Image *base, Image *image, Image *best, int ntries, double *best_diff);