aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* 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 FFBoundingBox {
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 */
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