diff options
author | Jeff Muizelaar <jeff@infidigm.net> | 2005-05-21 02:09:44 +0000 |
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committer | Jeff Muizelaar <jeff@infidigm.net> | 2005-05-21 02:09:44 +0000 |
commit | ebd951a663d1f715904ac6c0d1e557db1c563910 (patch) | |
tree | 9aefa2c92fe78c7b66aebdbb48d7ece6a1edea4d /buffer-diff.h |
Initial revision
Diffstat (limited to 'buffer-diff.h')
-rw-r--r-- | buffer-diff.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/buffer-diff.h b/buffer-diff.h new file mode 100644 index 0000000..a02834f --- /dev/null +++ b/buffer-diff.h @@ -0,0 +1,50 @@ +/* imagediff - Compare two images + * + * Copyright © 2004 Richard D. Worth + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of Richard Worth + * not be used in advertising or publicity pertaining to distribution + * of the software without specific, written prior permission. + * Richard Worth makes no representations about the suitability of this + * software for any purpose. It is provided "as is" without express + * or implied warranty. + * + * RICHARD WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN + * NO EVENT SHALL RICHARD WORTH BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS + * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: Richard D. Worth <richard@theworths.org> */ + +#ifndef BUFFER_DIFF_H +#define BUFFER_DIFF_H + +/* Returns number of pixels changed, (or -1 on error). + * Also fills in a "diff" buffer intended to visually show where the + * images differ. + */ +int +buffer_diff (unsigned char *buf_a, + unsigned char *buf_b, + unsigned char *buf_diff, + int width, + int height, + int stride); + +/* Returns number of pixels changed, (or -1 on error). + * Also saves a "diff" image intended to visually show where the + * images differ. + */ +int +image_diff (const char *filename_a, + const char *filename_b, + const char *filename_diff); + +#endif |