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fft_table.h
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1 /*
2  * Copyright (c) 2012
3  * MIPS Technologies, Inc., California.
4  *
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6  * modification, are permitted provided that the following conditions
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15  * this software without specific prior written permission.
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28  *
29  * Authors: Stanislav Ocovaj (socovaj@mips.com)
30  * Goran Cordasic (goran@mips.com)
31  * Djordje Pesut (djordje@mips.com)
32  *
33  * This file is part of FFmpeg.
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48  */
49 
50 /**
51  * @file
52  * definitions and tables for FFT
53  */
54 #ifndef AVCODEC_FFT_TABLE_H
55 #define AVCODEC_FFT_TABLE_H
56 
57 #include "libavcodec/fft.h"
58 
59 #define MAX_LOG2_NFFT 16 //!< Specifies maximum allowed fft size
60 #define MAX_FFT_SIZE (1 << MAX_LOG2_NFFT)
61 
62 extern const int32_t w_tab_sr[];
63 extern uint16_t fft_offsets_lut[];
64 void ff_fft_lut_init(uint16_t *table, int off, int size, int *index);
65 
66 #endif /* AVCODEC_FFT_TABLE_H */