kbdwin.h 1.3 KB

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  1. /*
  2. * This file is part of FFmpeg.
  3. *
  4. * FFmpeg is free software; you can redistribute it and/or
  5. * modify it under the terms of the GNU Lesser General Public
  6. * License as published by the Free Software Foundation; either
  7. * version 2.1 of the License, or (at your option) any later version.
  8. *
  9. * FFmpeg is distributed in the hope that it will be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. * Lesser General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU Lesser General Public
  15. * License along with FFmpeg; if not, write to the Free Software
  16. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17. */
  18. #ifndef AVCODEC_KBDWIN_H
  19. #define AVCODEC_KBDWIN_H
  20. #include <stdint.h>
  21. /**
  22. * Maximum window size for ff_kbd_window_init.
  23. */
  24. #define FF_KBD_WINDOW_MAX 1024
  25. /**
  26. * Generate a Kaiser-Bessel Derived Window.
  27. * @param window pointer to half window
  28. * @param alpha determines window shape
  29. * @param n size of half window, max FF_KBD_WINDOW_MAX
  30. */
  31. void ff_kbd_window_init(float *window, float alpha, int n);
  32. void ff_kbd_window_init_fixed(int32_t *window, float alpha, int n);
  33. #endif /* AVCODEC_KBDWIN_H */