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41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/*
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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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#ifndef AVCODEC_KBDWIN_H
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#define AVCODEC_KBDWIN_H
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#include <stdint.h>
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/**
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* Maximum window size for avpriv_kbd_window_init.
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*/
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#define FF_KBD_WINDOW_MAX 1024
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/**
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* Generate a Kaiser-Bessel Derived Window.
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* @param window pointer to half window
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* @param alpha determines window shape
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* @param n size of half window
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*
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* @return if n is larger than FF_KBD_WINDOW_MAX then AVERROR(ENOMEM) is possible
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*/
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int avpriv_kbd_window_init(float *window, float alpha, int n);
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int avpriv_kbd_window_init_fixed(int32_t *window, float alpha, int n);
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#endif /* AVCODEC_KBDWIN_H */
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