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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; | |
28 | } FFBoundingBox; | |
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 | */ | |
40 | int ff_calculate_bounding_box(FFBoundingBox *bbox, | |
41 | const uint8_t *data, int linesize, | |
42 | int w, int h, int min_val); | |
43 | ||
44 | #endif /* AVFILTER_BBOX_H */ |