/* * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_KBDWIN_H #define AVCODEC_KBDWIN_H #include <stdint.h> /** * Maximum window size for avpriv_kbd_window_init. */ #define FF_KBD_WINDOW_MAX 1024 /** * Generate a Kaiser-Bessel Derived Window. * @param window pointer to half window * @param alpha determines window shape * @param n size of half window * * @return if n is larger than FF_KBD_WINDOW_MAX then AVERROR(ENOMEM) is possible */ int avpriv_kbd_window_init(float *window, float alpha, int n); int avpriv_kbd_window_init_fixed(int32_t *window, float alpha, int n); #endif /* AVCODEC_KBDWIN_H */