libavcodec/kbdwin.h

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #ifndef AVCODEC_KBDWIN_H
  20 #define AVCODEC_KBDWIN_H
  21
  22 /**
  23  * Maximum window size for ff_kbd_window_init.
  24  */
  25 #define FF_KBD_WINDOW_MAX 1024
  26
  27 /**
  28  * Generate a Kaiser-Bessel Derived Window.
  29  * @param   window  pointer to half window
  30  * @param   alpha   determines window shape
  31  * @param   n       size of half window, max FF_KBD_WINDOW_MAX
  32  */
  33 void ff_kbd_window_init(float *window, float alpha, int n);
  34
  35 #endif /* AVCODEC_KBDWIN_H */