ref: 17f7f6be4e1a316c0f5f26ff70e047aece4de2bc
dir: /sys/src/cmd/audio/libFLAC/private/window.h/
/* libFLAC - Free Lossless Audio Codec library * Copyright (C) 2006-2009 Josh Coalson * Copyright (C) 2011-2022 Xiph.Org Foundation * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of the Xiph.org Foundation nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef FLAC__PRIVATE__WINDOW_H #define FLAC__PRIVATE__WINDOW_H #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "private/float.h" #include "FLAC/format.h" #ifndef FLAC__INTEGER_ONLY_LIBRARY /* * FLAC__window_*() * -------------------------------------------------------------------- * Calculates window coefficients according to different apodization * functions. * * OUT window[0,L-1] * IN L (number of points in window) */ void FLAC__window_bartlett(FLAC__real *window, const FLAC__int32 L); void FLAC__window_bartlett_hann(FLAC__real *window, const FLAC__int32 L); void FLAC__window_blackman(FLAC__real *window, const FLAC__int32 L); void FLAC__window_blackman_harris_4term_92db_sidelobe(FLAC__real *window, const FLAC__int32 L); void FLAC__window_connes(FLAC__real *window, const FLAC__int32 L); void FLAC__window_flattop(FLAC__real *window, const FLAC__int32 L); void FLAC__window_gauss(FLAC__real *window, const FLAC__int32 L, const FLAC__real stddev); /* 0.0 < stddev <= 0.5 */ void FLAC__window_hamming(FLAC__real *window, const FLAC__int32 L); void FLAC__window_hann(FLAC__real *window, const FLAC__int32 L); void FLAC__window_kaiser_bessel(FLAC__real *window, const FLAC__int32 L); void FLAC__window_nuttall(FLAC__real *window, const FLAC__int32 L); void FLAC__window_rectangle(FLAC__real *window, const FLAC__int32 L); void FLAC__window_triangle(FLAC__real *window, const FLAC__int32 L); void FLAC__window_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p); void FLAC__window_partial_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p, const FLAC__real start, const FLAC__real end); void FLAC__window_punchout_tukey(FLAC__real *window, const FLAC__int32 L, const FLAC__real p, const FLAC__real start, const FLAC__real end); void FLAC__window_welch(FLAC__real *window, const FLAC__int32 L); #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */ #endif