yading@10: /*
yading@10:  * Copyright (c) 2005 Robert Edele <yartrebo@earthlink.net>
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVFILTER_BBOX_H
yading@10: #define AVFILTER_BBOX_H
yading@10: 
yading@10: #include <stdint.h>
yading@10: 
yading@10: typedef struct {
yading@10:     int x1, x2, y1, y2;
yading@10: } FFBoundingBox;
yading@10: 
yading@10: /**
yading@10:  * Calculate the smallest rectangle that will encompass the
yading@10:  * region with values > min_val.
yading@10:  *
yading@10:  * @param bbox bounding box structure which is updated with the found values.
yading@10:  *             If no pixels could be found with value > min_val, the
yading@10:  *             structure is not modified.
yading@10:  * @return 1 in case at least one pixel with value > min_val was found,
yading@10:  *         0 otherwise
yading@10:  */
yading@10: int ff_calculate_bounding_box(FFBoundingBox *bbox,
yading@10:                               const uint8_t *data, int linesize,
yading@10:                               int w, int h, int min_val);
yading@10: 
yading@10: #endif /* AVFILTER_BBOX_H */