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bbox.h
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1 /*
2  * Copyright (c) 2005 Robert Edele <yartrebo@earthlink.net>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVFILTER_BBOX_H
22 #define AVFILTER_BBOX_H
23 
24 #include <stdint.h>
25 
26 typedef struct {
27  int x1, x2, y1, y2;
29 
30 /**
31  * Calculate the smallest rectangle that will encompass the
32  * region with values > min_val.
33  *
34  * @param bbox bounding box structure which is updated with the found values.
35  * If no pixels could be found with value > min_val, the
36  * structure is not modified.
37  * @return 1 in case at least one pixel with value > min_val was found,
38  * 0 otherwise
39  */
41  const uint8_t *data, int linesize,
42  int w, int h, int min_val);
43 
44 #endif /* AVFILTER_BBOX_H */