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1 /*
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2 * This file is part of FFmpeg.
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3 *
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4 * FFmpeg is free software; you can redistribute it and/or
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5 * modify it under the terms of the GNU Lesser General Public
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6 * License as published by the Free Software Foundation; either
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7 * version 2.1 of the License, or (at your option) any later version.
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8 *
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9 * FFmpeg is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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12 * Lesser General Public License for more details.
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13 *
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14 * You should have received a copy of the GNU Lesser General Public
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15 * License along with FFmpeg; if not, write to the Free Software
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16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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17 */
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18
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19 #ifndef AVCODEC_KBDWIN_H
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20 #define AVCODEC_KBDWIN_H
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21
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22 /**
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23 * Maximum window size for ff_kbd_window_init.
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24 */
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25 #define FF_KBD_WINDOW_MAX 1024
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26
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27 /**
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28 * Generate a Kaiser-Bessel Derived Window.
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29 * @param window pointer to half window
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30 * @param alpha determines window shape
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31 * @param n size of half window, max FF_KBD_WINDOW_MAX
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32 */
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33 void ff_kbd_window_init(float *window, float alpha, int n);
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34
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35 #endif /* AVCODEC_KBDWIN_H */
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