995dcb610c
Took the opportunity to undo the Godot changed made to the
opus source. The opus module should eventually be built in its
own environment to avoid polluting others with too many include
dirs and defines.
TODO: Fix the platform/ stuff for opus.
(cherry picked from commit d9a291f641)
speex module was only added while cherry-picking, as speex is removed
in the master branch but we don't want to break compatibility in 2.1.x.
Unbundling wasn't done as the module uses the internal speex_free,
so it would require some more work.
52 lines
1 KiB
C++
52 lines
1 KiB
C++
#ifndef KISS_FTR_H
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#define KISS_FTR_H
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#include "kiss_fft.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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Real optimized version can save about 45% cpu time vs. complex fft of a real seq.
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*/
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typedef struct kiss_fftr_state *kiss_fftr_cfg;
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kiss_fftr_cfg kiss_fftr_alloc(int nfft,int inverse_fft,void * mem, size_t * lenmem);
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/*
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nfft must be even
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If you don't care to allocate space, use mem = lenmem = NULL
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*/
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void kiss_fftr(kiss_fftr_cfg cfg,const kiss_fft_scalar *timedata,kiss_fft_cpx *freqdata);
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/*
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input timedata has nfft scalar points
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output freqdata has nfft/2+1 complex points
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*/
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void kiss_fftr2(kiss_fftr_cfg st,const kiss_fft_scalar *timedata,kiss_fft_scalar *freqdata);
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void kiss_fftri(kiss_fftr_cfg cfg,const kiss_fft_cpx *freqdata,kiss_fft_scalar *timedata);
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void kiss_fftri2(kiss_fftr_cfg st,const kiss_fft_scalar *freqdata, kiss_fft_scalar *timedata);
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/*
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input freqdata has nfft/2+1 complex points
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output timedata has nfft scalar points
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*/
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#define kiss_fftr_free speex_free
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#ifdef __cplusplus
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}
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#endif
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#endif
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