FFmpeg/libavcodec/sinewin.h
Jovan Zelincevic 08be74ac81 libavcodec: Implementation of AAC_fixed_decoder (LC-module) [2/4]
Add fixed point implementation of functions for generating tables

Signed-off-by: Nedeljko Babic <nedeljko.babic@imgtec.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2015-07-09 14:41:19 +02:00

73 lines
1.9 KiB
C

/*
* 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
#ifndef USE_FIXED
#define USE_FIXED 0
#endif
#if USE_FIXED
#define SINEWIN_SUFFIX(a) a ## _fixed
#define INTFLOAT int
#else
#define SINEWIN_SUFFIX(a) a
#define INTFLOAT float
#endif
#define SINETABLE(size) \
SINETABLE_CONST DECLARE_ALIGNED(32, INTFLOAT, SINEWIN_SUFFIX(ff_sine_##size))[size]
/**
* Generate a sine window.
* @param window pointer to half window
* @param n size of half window
*/
void SINEWIN_SUFFIX(ff_sine_window_init)(INTFLOAT *window, int n);
/**
* initialize the specified entry of ff_sine_windows
*/
void SINEWIN_SUFFIX(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(8192);
extern SINETABLE_CONST INTFLOAT * const SINEWIN_SUFFIX(ff_sine_windows)[14];
#endif /* AVCODEC_SINEWIN_H */