fft_table.h

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/*
 * Copyright (c) 2012
 *      MIPS Technologies, Inc., California.
 *
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 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
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 *
 * Authors:  Stanislav Ocovaj (socovaj@mips.com)
 *           Goran Cordasic   (goran@mips.com)
 *           Djordje Pesut    (djordje@mips.com)
 *
 * This file is part of FFmpeg.
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 * FFmpeg is free software; you can redistribute it and/or
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/**
 * @file
 * definitions and tables for FFT
 */
#ifndef AVCODEC_FFT_TABLE_H
#define AVCODEC_FFT_TABLE_H
 
#include "libavcodec/fft.h"
 
#define MAX_LOG2_NFFT 17 //!< Specifies maximum allowed fft size
#define MAX_FFT_SIZE (1 << MAX_LOG2_NFFT)
 
extern const int32_t ff_w_tab_sr[];
extern uint16_t ff_fft_offsets_lut[];
void ff_fft_lut_init(uint16_t *table, int off, int size, int *index);
 
#endif /* AVCODEC_FFT_TABLE_H */