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 75
