| 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 */ |