1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2006,2007 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #ifndef FLAC__PRIVATE__WINDOW_H
33 #define FLAC__PRIVATE__WINDOW_H
39 #include "private/float.h"
40 #include "flac/format.h"
42 #ifndef FLAC__INTEGER_ONLY_LIBRARY
46 * --------------------------------------------------------------------
47 * Calculates window coefficients according to different apodization
51 * IN L (number of points in window)
53 void FLAC__window_bartlett(FLAC__real *window, const FLAC__int32 L);
54 void FLAC__window_bartlett_hann(FLAC__real *window, const FLAC__int32 L);
55 void FLAC__window_blackman(FLAC__real *window, const FLAC__int32 L);
56 void FLAC__window_blackman_harris_4term_92db_sidelobe(FLAC__real *window, const FLAC__int32 L);
57 void FLAC__window_connes(FLAC__real *window, const FLAC__int32 L);
58 void FLAC__window_flattop(FLAC__real *window, const FLAC__int32 L);
59 void FLAC__window_gauss(FLAC__real *window, const FLAC__int32 L, const FLAC__real stddev); /* 0.0 < stddev <= 0.5 */
60 void FLAC__window_hamming(FLAC__real *window, const FLAC__int32 L);
61 void FLAC__window_hann(FLAC__real *window, const FLAC__int32 L);
62 void FLAC__window_kaiser_bessel(FLAC__real *window, const FLAC__int32 L);
63 void FLAC__window_nuttall(FLAC__real *window, const FLAC__int32 L);
64 void FLAC__window_rectangle(FLAC__real *window, const FLAC__int32 L);
65 void FLAC__window_triangle(FLAC__real *window, const FLAC__int32 L);
66 void FLAC__window_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p);
67 void FLAC__window_welch(FLAC__real *window, const FLAC__int32 L);
69 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */