GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/bbox.c Lines: 0 32 0.0 %
Date: 2020-08-14 10:39:37 Branches: 0 26 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2005 Robert Edele <yartrebo@earthlink.net>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "bbox.h"
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int ff_calculate_bounding_box(FFBoundingBox *bbox,
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                              const uint8_t *data, int linesize, int w, int h,
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                              int min_val)
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{
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    int x, y;
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    int start_x;
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    int start_y;
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    int end_x;
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    int end_y;
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    const uint8_t *line;
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    /* left bound */
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    for (start_x = 0; start_x < w; start_x++)
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        for (y = 0; y < h; y++)
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            if ((data[y * linesize + start_x] > min_val))
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                goto outl;
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outl:
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    if (start_x == w) /* no points found */
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        return 0;
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    /* right bound */
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    for (end_x = w - 1; end_x >= start_x; end_x--)
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        for (y = 0; y < h; y++)
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            if ((data[y * linesize + end_x] > min_val))
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                goto outr;
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outr:
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    /* top bound */
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    line = data;
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    for (start_y = 0; start_y < h; start_y++) {
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        for (x = 0; x < w; x++)
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            if (line[x] > min_val)
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                goto outt;
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        line += linesize;
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    }
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outt:
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    /* bottom bound */
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    line = data + (h-1)*linesize;
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    for (end_y = h - 1; end_y >= start_y; end_y--) {
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        for (x = 0; x < w; x++)
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            if (line[x] > min_val)
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                goto outb;
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        line -= linesize;
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    }
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outb:
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    bbox->x1 = start_x;
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    bbox->y1 = start_y;
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    bbox->x2 = end_x;
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    bbox->y2 = end_y;
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    return 1;
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}