76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
// fft.cpp
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//
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// Author: J.A. de Jong -ASCEE
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//
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// Description:
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//
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//////////////////////////////////////////////////////////////////////
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#define TRACERPLUS (-5)
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#include "ascee_tracer.h"
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#include "fft.h"
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#include "types.h"
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#include "fftpack.h"
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typedef struct Fft_s {
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us nfft;
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us nchannels;
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Fftr* fftr;
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} Fft;
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Fft* Fft_alloc(const us nfft,const us nchannels) {
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fsTRACE(15);
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if(nchannels > ASCEE_MAX_NUM_CHANNELS) {
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WARN("Too high number of channels! Please increase the "
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"ASCEE_MAX_NUM_CHANNELS compilation flag");
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return NULL;
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}
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Fft* fft = a_malloc(sizeof(Fft));
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if(fft==NULL) {
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WARN("Fft allocation failed");
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return NULL;
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}
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fft->nfft = nfft;
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fft->nchannels = nchannels;
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fft->fftr = Fftr_alloc(nfft);
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if(!fft->fftr) {
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a_free(fft);
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WARN(ALLOCFAILED "fftr");
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return NULL;
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}
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feTRACE(15);
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return fft;
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}
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void Fft_free(Fft* fft) {
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fsTRACE(15);
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Fftr_free(fft->fftr);
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a_free(fft);
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feTRACE(15);
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}
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us Fft_nchannels(const Fft* fft) {return fft->nchannels;}
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us Fft_nfft(const Fft* fft) {return fft->nfft;}
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void Fft_fft(const Fft* fft,const dmat* timedata,cmat* result) {
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fsTRACE(15);
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dbgassert(timedata && result,NULLPTRDEREF);
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dbgassert(timedata->n_rows == fft->nfft,"Invalid size for time data rows."
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" Should be equal to nfft");
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dbgassert(timedata->n_cols == fft->nchannels,"Invalid size for time data cols."
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" Should be equal to nchannels");
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for(us col=0;col<fft->nchannels;col++) {
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Fftr_fftr(fft->fftr,
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getdmatval(timedata,0,col),
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getcmatval(result,0,col));
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}
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feTRACE(15);
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}
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//////////////////////////////////////////////////////////////////////
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