1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2006-2009 Josh Coalson
3 * Copyright (C) 2011-2016 Xiph.Org Foundation
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * - Neither the name of the Xiph.org Foundation nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #ifndef FLAC__PRIVATE__WINDOW_H
34 #define FLAC__PRIVATE__WINDOW_H
40 #include "private/float.h"
41 #include "FLAC/format.h"
43 #ifndef FLAC__INTEGER_ONLY_LIBRARY
47 * --------------------------------------------------------------------
48 * Calculates window coefficients according to different apodization
52 * IN L (number of points in window)
54 void FLAC__window_bartlett(FLAC__real *window, const FLAC__int32 L);
55 void FLAC__window_bartlett_hann(FLAC__real *window, const FLAC__int32 L);
56 void FLAC__window_blackman(FLAC__real *window, const FLAC__int32 L);
57 void FLAC__window_blackman_harris_4term_92db_sidelobe(FLAC__real *window, const FLAC__int32 L);
58 void FLAC__window_connes(FLAC__real *window, const FLAC__int32 L);
59 void FLAC__window_flattop(FLAC__real *window, const FLAC__int32 L);
60 void FLAC__window_gauss(FLAC__real *window, const FLAC__int32 L, const FLAC__real stddev); /* 0.0 < stddev <= 0.5 */
61 void FLAC__window_hamming(FLAC__real *window, const FLAC__int32 L);
62 void FLAC__window_hann(FLAC__real *window, const FLAC__int32 L);
63 void FLAC__window_kaiser_bessel(FLAC__real *window, const FLAC__int32 L);
64 void FLAC__window_nuttall(FLAC__real *window, const FLAC__int32 L);
65 void FLAC__window_rectangle(FLAC__real *window, const FLAC__int32 L);
66 void FLAC__window_triangle(FLAC__real *window, const FLAC__int32 L);
67 void FLAC__window_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p);
68 void FLAC__window_partial_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p, const FLAC__real start, const FLAC__real end);
69 void FLAC__window_punchout_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p, const FLAC__real start, const FLAC__real end);
70 void FLAC__window_welch(FLAC__real *window, const FLAC__int32 L);
72 #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */