#ifndef _SINEWIN_TABLEGEN_H_830a0391_
#define _SINEWIN_TABLEGEN_H_830a0391_

/*
 * This file was stolen from ffmpeg and modified for usability here.
 *  The original is
 * 
 * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 *
 * This version is a derivative work of that version.  It is not free
 *  software; it is licensed under the GNU Lesser General Public
 *  License version 2.1, which places nontrivial restrictions on what
 *  may be done with it.  (I'm not terribly happy about that, but for
 *  my purposes accepting LGPL-infected code is a lower price than
 *  reimplementing it all myself.)
 *
 * The LGPL v2.1 as distributed with ffmpeg is in the accompanying file
 *  `LGPL-v2.1'.
 */

#include "config.h"

#if !CONFIG_HARDCODED_TABLES
SINETABLE(  32);
SINETABLE(  64);
SINETABLE( 128);
SINETABLE( 256);
SINETABLE( 512);
SINETABLE(1024);
SINETABLE(2048);
SINETABLE(4096);
SINETABLE(8192);
#else
#include "sinewin_tables.h"
#endif

SINETABLE_CONST float * const ff_sine_windows[] = {
    NULL, NULL, NULL, NULL, NULL, // unused
    ff_sine_32 , ff_sine_64 ,
    ff_sine_128, ff_sine_256, ff_sine_512, ff_sine_1024, ff_sine_2048, ff_sine_4096, ff_sine_8192
};

// Generate a sine window.
av_cold void ff_sine_window_init(float *window, int n) {
    int i;
    for(i = 0; i < n; i++)
        window[i] = sinf((i + 0.5) * (M_PI / (2.0 * n)));
}

av_cold void ff_init_ff_sine_windows(int index) {
    assert(index >= 0 && index < FF_ARRAY_ELEMS(ff_sine_windows));
#if !CONFIG_HARDCODED_TABLES
    ff_sine_window_init(ff_sine_windows[index], 1 << index);
#endif
}

#endif