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Mark Borgerding 2004-04-27 02:19:41 +00:00
parent 6b85086a56
commit 84b1a09015
1 changed files with 7 additions and 3 deletions
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8
kiss_fft.h
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@ -14,12 +14,13 @@ extern "C" {
ATTENTION! ATTENTION!
If you would like a : If you would like a :
-- a utility that will handle the caching of fft objects -- a utility that will handle the caching of fft objects
-- real-only FFT -- real-only (no imaginary time component ) FFT
-- a multi-dimensional FFT -- a multi-dimensional FFT
-- a command-line utility to perform ffts -- a command-line utility to perform ffts
-- a command-line utility to perform fast-convolution filtering -- a command-line utility to perform fast-convolution filtering
then see tools/ Then see kfc.h kiss_fftr.h kiss_fftnd.h fftutil.c kiss_fastfir.c
in the tools/ directory.
*/ */
#ifdef FIXED_POINT #ifdef FIXED_POINT
@ -75,6 +76,9 @@ kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem)
* */ * */
void kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout); void kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
/*
A more generic version of the above function. It reads its input from every Nth sample.
* */
void kiss_fft_stride(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int fin_stride); void kiss_fft_stride(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int fin_stride);
/* If kiss_fft_alloc allocated a buffer, it is one contiguous /* If kiss_fft_alloc allocated a buffer, it is one contiguous