| 1 | /* libFLAC - Free Lossless Audio Codec library |
| 2 | * Copyright (C) 2006-2009 Josh Coalson |
| 3 | * Copyright (C) 2011-2016 Xiph.Org Foundation |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 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. |
| 15 | * |
| 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. |
| 19 | * |
| 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. |
| 31 | */ |
| 32 | |
| 33 | #ifndef FLAC__PRIVATE__WINDOW_H |
| 34 | #define FLAC__PRIVATE__WINDOW_H |
| 35 | |
| 36 | #ifdef HAVE_CONFIG_H |
| 37 | #include <config.h> |
| 38 | #endif |
| 39 | |
| 40 | #include "private/float.h" |
| 41 | #include "FLAC/format.h" |
| 42 | |
| 43 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 44 | |
| 45 | /* |
| 46 | * FLAC__window_*() |
| 47 | * -------------------------------------------------------------------- |
| 48 | * Calculates window coefficients according to different apodization |
| 49 | * functions. |
| 50 | * |
| 51 | * OUT window[0,L-1] |
| 52 | * IN L (number of points in window) |
| 53 | */ |
| 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); |
| 71 | |
| 72 | #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */ |
| 73 | |
| 74 | #endif |