sinewin.h 1.77 KB
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/*
 * Copyright (c) 2008 Robert Swain
 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVCODEC_SINEWIN_H
#define AVCODEC_SINEWIN_H

#include "config.h"
#include "libavutil/mem.h"
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#include "libavcodec/aac_defines.h"
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#if CONFIG_HARDCODED_TABLES
#   define SINETABLE_CONST const
#else
#   define SINETABLE_CONST
#endif

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#ifndef USE_FIXED
#define USE_FIXED 0
#endif

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#define SINETABLE(size) \
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    SINETABLE_CONST DECLARE_ALIGNED(32, INTFLOAT, AAC_RENAME(ff_sine_##size))[size]
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/**
 * Generate a sine window.
 * @param   window  pointer to half window
 * @param   n       size of half window
 */
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void AAC_RENAME(ff_sine_window_init)(INTFLOAT *window, int n);
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/**
 * initialize the specified entry of ff_sine_windows
 */
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void AAC_RENAME(ff_init_ff_sine_windows)(int index);
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extern SINETABLE(  32);
extern SINETABLE(  64);
extern SINETABLE( 128);
extern SINETABLE( 256);
extern SINETABLE( 512);
extern SINETABLE(1024);
extern SINETABLE(2048);
extern SINETABLE(4096);
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extern SINETABLE(8192);
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extern SINETABLE_CONST INTFLOAT * const AAC_RENAME(ff_sine_windows)[14];
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#endif /* AVCODEC_SINEWIN_H */