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35222296fe
Introduce polyphase channelizer (Rx) and synthesis (Tx) filterbanks, which serve as the signal processing backend for multi-carrier GSM. Fast Fourier Transform (FFT) is used internally. FFTW is added as a new build dependency. Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
14 lines
313 B
C
14 lines
313 B
C
#ifndef _FFT_H_
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#define _FFT_H_
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struct fft_hdl;
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struct fft_hdl *init_fft(int reverse, int m, int istride, int ostride,
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float *in, float *out, int ooffset);
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void *fft_malloc(size_t size);
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void fft_free(void *ptr);
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void free_fft(struct fft_hdl *hdl);
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int cxvec_fft(struct fft_hdl *hdl);
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#endif /* _FFT_H_ */
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