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2a7a9d00cc
Add new testsvg script and accompanying imagediff program, (for interim SVG-based test suites while we wait for the standard cairo test suite to mature). Split buffer_diff out into its own file for the purpose of imagediff.
38 lines
1.6 KiB
C
38 lines
1.6 KiB
C
/* imagediff - Compare two images
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*
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* Copyright © 2004 Richard D. Worth
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of Richard Worth
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* not be used in advertising or publicity pertaining to distribution
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* of the software without specific, written prior permission.
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* Richard Worth makes no representations about the suitability of this
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* software for any purpose. It is provided "as is" without express
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* or implied warranty.
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*
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* RICHARD WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
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* NO EVENT SHALL RICHARD WORTH BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Richard D. Worth <richard@theworths.org> */
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#ifndef BUFFER_DIFF_H
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#define BUFFER_DIFF_H
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/* Image comparison code courttesy of Richard Worth.
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* Returns number of pixels changed.
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* Also fills out a "diff" image intended to visually show where the
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* images differ.
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*/
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int
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buffer_diff (char *buf_a, char *buf_b, char *buf_diff,
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int width, int height, int stride);
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#endif
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