yading@10: /*
yading@10:  * Copyright (c) 2008 Robert Swain
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_SINEWIN_H
yading@10: #define AVCODEC_SINEWIN_H
yading@10: 
yading@10: #include "config.h"
yading@10: #include "libavutil/mem.h"
yading@10: 
yading@10: #if CONFIG_HARDCODED_TABLES
yading@10: #   define SINETABLE_CONST const
yading@10: #else
yading@10: #   define SINETABLE_CONST
yading@10: #endif
yading@10: 
yading@10: #define SINETABLE(size) \
yading@10:     SINETABLE_CONST DECLARE_ALIGNED(32, float, ff_sine_##size)[size]
yading@10: 
yading@10: /**
yading@10:  * Generate a sine window.
yading@10:  * @param   window  pointer to half window
yading@10:  * @param   n       size of half window
yading@10:  */
yading@10: void ff_sine_window_init(float *window, int n);
yading@10: 
yading@10: /**
yading@10:  * initialize the specified entry of ff_sine_windows
yading@10:  */
yading@10: void ff_init_ff_sine_windows(int index);
yading@10: 
yading@10: extern SINETABLE(  32);
yading@10: extern SINETABLE(  64);
yading@10: extern SINETABLE( 128);
yading@10: extern SINETABLE( 256);
yading@10: extern SINETABLE( 512);
yading@10: extern SINETABLE(1024);
yading@10: extern SINETABLE(2048);
yading@10: extern SINETABLE(4096);
yading@10: extern SINETABLE(8192);
yading@10: 
yading@10: extern SINETABLE_CONST float * const ff_sine_windows[14];
yading@10: 
yading@10: #endif /* AVCODEC_SINEWIN_H */