1*600f14f4SXin Li /* libFLAC - Free Lossless Audio Codec library 2*600f14f4SXin Li * Copyright (C) 2006-2009 Josh Coalson 3*600f14f4SXin Li * Copyright (C) 2011-2023 Xiph.Org Foundation 4*600f14f4SXin Li * 5*600f14f4SXin Li * Redistribution and use in source and binary forms, with or without 6*600f14f4SXin Li * modification, are permitted provided that the following conditions 7*600f14f4SXin Li * are met: 8*600f14f4SXin Li * 9*600f14f4SXin Li * - Redistributions of source code must retain the above copyright 10*600f14f4SXin Li * notice, this list of conditions and the following disclaimer. 11*600f14f4SXin Li * 12*600f14f4SXin Li * - Redistributions in binary form must reproduce the above copyright 13*600f14f4SXin Li * notice, this list of conditions and the following disclaimer in the 14*600f14f4SXin Li * documentation and/or other materials provided with the distribution. 15*600f14f4SXin Li * 16*600f14f4SXin Li * - Neither the name of the Xiph.org Foundation nor the names of its 17*600f14f4SXin Li * contributors may be used to endorse or promote products derived from 18*600f14f4SXin Li * this software without specific prior written permission. 19*600f14f4SXin Li * 20*600f14f4SXin Li * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21*600f14f4SXin Li * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22*600f14f4SXin Li * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23*600f14f4SXin Li * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 24*600f14f4SXin Li * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25*600f14f4SXin Li * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26*600f14f4SXin Li * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 27*600f14f4SXin Li * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 28*600f14f4SXin Li * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 29*600f14f4SXin Li * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 30*600f14f4SXin Li * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31*600f14f4SXin Li */ 32*600f14f4SXin Li 33*600f14f4SXin Li #ifndef FLAC__PRIVATE__WINDOW_H 34*600f14f4SXin Li #define FLAC__PRIVATE__WINDOW_H 35*600f14f4SXin Li 36*600f14f4SXin Li #ifdef HAVE_CONFIG_H 37*600f14f4SXin Li #include <config.h> 38*600f14f4SXin Li #endif 39*600f14f4SXin Li 40*600f14f4SXin Li #include "private/float.h" 41*600f14f4SXin Li #include "FLAC/format.h" 42*600f14f4SXin Li 43*600f14f4SXin Li #ifndef FLAC__INTEGER_ONLY_LIBRARY 44*600f14f4SXin Li 45*600f14f4SXin Li /* 46*600f14f4SXin Li * FLAC__window_*() 47*600f14f4SXin Li * -------------------------------------------------------------------- 48*600f14f4SXin Li * Calculates window coefficients according to different apodization 49*600f14f4SXin Li * functions. 50*600f14f4SXin Li * 51*600f14f4SXin Li * OUT window[0,L-1] 52*600f14f4SXin Li * IN L (number of points in window) 53*600f14f4SXin Li */ 54*600f14f4SXin Li void FLAC__window_bartlett(FLAC__real *window, const FLAC__int32 L); 55*600f14f4SXin Li void FLAC__window_bartlett_hann(FLAC__real *window, const FLAC__int32 L); 56*600f14f4SXin Li void FLAC__window_blackman(FLAC__real *window, const FLAC__int32 L); 57*600f14f4SXin Li void FLAC__window_blackman_harris_4term_92db_sidelobe(FLAC__real *window, const FLAC__int32 L); 58*600f14f4SXin Li void FLAC__window_connes(FLAC__real *window, const FLAC__int32 L); 59*600f14f4SXin Li void FLAC__window_flattop(FLAC__real *window, const FLAC__int32 L); 60*600f14f4SXin Li void FLAC__window_gauss(FLAC__real *window, const FLAC__int32 L, const FLAC__real stddev); /* 0.0 < stddev <= 0.5 */ 61*600f14f4SXin Li void FLAC__window_hamming(FLAC__real *window, const FLAC__int32 L); 62*600f14f4SXin Li void FLAC__window_hann(FLAC__real *window, const FLAC__int32 L); 63*600f14f4SXin Li void FLAC__window_kaiser_bessel(FLAC__real *window, const FLAC__int32 L); 64*600f14f4SXin Li void FLAC__window_nuttall(FLAC__real *window, const FLAC__int32 L); 65*600f14f4SXin Li void FLAC__window_rectangle(FLAC__real *window, const FLAC__int32 L); 66*600f14f4SXin Li void FLAC__window_triangle(FLAC__real *window, const FLAC__int32 L); 67*600f14f4SXin Li void FLAC__window_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p); 68*600f14f4SXin Li 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*600f14f4SXin Li 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*600f14f4SXin Li void FLAC__window_welch(FLAC__real *window, const FLAC__int32 L); 71*600f14f4SXin Li 72*600f14f4SXin Li #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */ 73*600f14f4SXin Li 74*600f14f4SXin Li #endif 75