0,0 → 1,60 |
/* |
* Copyright (c) 2008 Robert Swain |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* 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. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* 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 |
* License along with FFmpeg; if not, write to the Free Software |
* 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" |
|
#if CONFIG_HARDCODED_TABLES |
# define SINETABLE_CONST const |
#else |
# define SINETABLE_CONST |
#endif |
|
#define SINETABLE(size) \ |
SINETABLE_CONST DECLARE_ALIGNED(32, float, ff_sine_##size)[size] |
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/** |
* Generate a sine window. |
* @param window pointer to half window |
* @param n size of half window |
*/ |
void ff_sine_window_init(float *window, int n); |
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/** |
* initialize the specified entry of ff_sine_windows |
*/ |
void 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); |
extern SINETABLE(8192); |
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extern SINETABLE_CONST float * const ff_sine_windows[14]; |
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#endif /* AVCODEC_SINEWIN_H */ |