bbox.h 1.5 KB

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  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. #ifndef AVFILTER_BBOX_H
  21. #define AVFILTER_BBOX_H
  22. #include <stdint.h>
  23. typedef struct {
  24. int x1, x2, y1, y2;
  25. } FFBoundingBox;
  26. /**
  27. * Calculate the smallest rectangle that will encompass the
  28. * region with values > min_val.
  29. *
  30. * @param bbox bounding box structure which is updated with the found values.
  31. * If no pixels could be found with value > min_val, the
  32. * structure is not modified.
  33. * @return 1 in case at least one pixel with value > min_val was found,
  34. * 0 otherwise
  35. */
  36. int ff_calculate_bounding_box(FFBoundingBox *bbox,
  37. const uint8_t *data, int linesize,
  38. int w, int h, int min_val);
  39. #endif /* AVFILTER_BBOX_H */