kopia lustrzana https://github.com/AlexandreRouma/SDRPlusPlus
71 wiersze
2.2 KiB
C++
71 wiersze
2.2 KiB
C++
#pragma once
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#include <dsp/stream.h>
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#include <dsp/buffer/reshaper.h>
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#include <dsp/multirate/rational_resampler.h>
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#include <dsp/sink/handler_sink.h>
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#include <dsp/demod/quadrature.h>
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#include <dsp/clock_recovery/mm.h>
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#include <dsp/taps/root_raised_cosine.h>
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#include <dsp/correction/dc_blocker.h>
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#include <dsp/loop/fast_agc.h>
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#include <dsp/digital/binary_slicer.h>
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#include <dsp/routing/doubler.h>
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class POCSAGDSP : public dsp::Processor<dsp::complex_t, uint8_t> {
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using base_type = dsp::Processor<dsp::complex_t, uint8_t>;
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public:
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POCSAGDSP() {}
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POCSAGDSP(dsp::stream<dsp::complex_t>* in, double samplerate, double baudrate) { init(in, samplerate, baudrate); }
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void init(dsp::stream<dsp::complex_t>* in, double samplerate, double baudrate) {
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// Save settings
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// TODO
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// Configure blocks
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demod.init(NULL, -4500.0, samplerate);
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float taps[] = { 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f, 0.1f };
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shape = dsp::taps::fromArray<float>(10, taps);
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fir.init(NULL, shape);
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recov.init(NULL, samplerate/baudrate, 1e-4, 1.0, 0.05);
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// Free useless buffers
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fir.out.free();
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recov.out.free();
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// Init base
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base_type::init(in);
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}
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int process(int count, dsp::complex_t* in, float* softOut, uint8_t* out) {
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count = demod.process(count, in, demod.out.readBuf);
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count = fir.process(count, demod.out.readBuf, demod.out.readBuf);
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count = recov.process(count, demod.out.readBuf, softOut);
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dsp::digital::BinarySlicer::process(count, softOut, out);
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return count;
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}
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void detune() {
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recov.setOmega(9.99);
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}
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int run() {
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int count = base_type::_in->read();
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if (count < 0) { return -1; }
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count = process(count, base_type::_in->readBuf, soft.writeBuf, base_type::out.writeBuf);
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base_type::_in->flush();
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if (!base_type::out.swap(count)) { return -1; }
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if (count) { if (!soft.swap(count)) { return -1; } }
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return count;
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}
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dsp::stream<float> soft;
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private:
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dsp::demod::Quadrature demod;
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dsp::tap<float> shape;
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dsp::filter::FIR<float, float> fir;
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dsp::clock_recovery::MM<float> recov;
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}; |