60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2008 Robert Swain
|
||
|
|
*
|
||
|
|
* This file is part of Libav.
|
||
|
|
*
|
||
|
|
* Libav 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.
|
||
|
|
*
|
||
|
|
* Libav 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 Libav; 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(16, float, ff_sine_##size)[size]
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* initialize the specified entry of ff_sine_windows
|
||
|
|
*/
|
||
|
|
void ff_init_ff_sine_windows(int index);
|
||
|
|
|
||
|
|
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_CONST float * const ff_sine_windows[13];
|
||
|
|
|
||
|
|
#endif
|