40 lines
685 B
C++
40 lines
685 B
C++
#ifndef _FFT_BEACON_FINDER_
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#define _FFT_BEACON_FINDER_
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#include <complex>
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#include <liquid/liquid.h>
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const size_t FFT_LEN = 512;
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class FFTBeaconFinder {
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private:
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int samplingrate;
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nco_crcf coarse_correction;
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fftplan fft;
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std::complex<float> fft_in[FFT_LEN];
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std::complex<float> fft_out[FFT_LEN];
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size_t pos;
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int next_fft_in;
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int last_center;
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float last_center_level;
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bool has_sync;
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int spectral_bin_to_fft_idx(int);
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public:
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FFTBeaconFinder(int);
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~FFTBeaconFinder();
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void reset_sync();
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std::complex<float> work(std::complex<float>);
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};
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#endif
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