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author | Stefano Sabatini <stefasab@gmail.com> | 2012-03-11 03:05:42 +0100 |
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committer | Stefano Sabatini <stefasab@gmail.com> | 2012-03-17 11:21:49 +0100 |
commit | 3225bc37a361c1c02effebf4c981c837d8468a70 (patch) | |
tree | 35d86d4e3a09969463bf97a72702969c2267aacf /libavfilter/bbox.h | |
parent | 32a5775a9192ed9d88d50ed2ff602d3ef4e98c84 (diff) | |
download | ffmpeg-3225bc37a361c1c02effebf4c981c837d8468a70.tar.gz |
lavfi: add bbox filter
Also add bbox.h and bbox.c files, based on the remove-logo filter by
Robert Edele. These files are useful for sharing code with the pending
removelogo port.
Diffstat (limited to 'libavfilter/bbox.h')
-rw-r--r-- | libavfilter/bbox.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libavfilter/bbox.h b/libavfilter/bbox.h new file mode 100644 index 0000000000..eb73154c14 --- /dev/null +++ b/libavfilter/bbox.h @@ -0,0 +1,44 @@ +/* + * Copyright (c) 2005 Robert Edele <yartrebo@earthlink.net> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVFILTER_BBOX_H +#define AVFILTER_BBOX_H + +#include <stdint.h> + +typedef struct { + int x1, x2, y1, y2; +} FFBoundingBox; + +/** + * Calculate the smallest rectangle that will encompass the + * region with values > min_val. + * + * @param bbox bounding box structure which is updated with the found values. + * If no pixels could be found with value > min_val, the + * structure is not modified. + * @return 1 in case at least one pixel with value > min_val was found, + * 0 otherwise + */ +int ff_calculate_bounding_box(FFBoundingBox *bbox, + const uint8_t *data, int linesize, + int w, int h, int min_val); + +#endif /* AVFILTER_BBOX_H */ |