mirror of
https://github.com/cjcliffe/CubicSDR.git
synced 2025-07-16 00:25:17 -04:00
810533750f
Moved waterfall increment into rendering to reduce audio processing impact. Added another test filter and resample stage to FM demod experiment to clean up audio and remove high pitch on stereo channels until it can be demodulated.
54 lines
1.1 KiB
C++
54 lines
1.1 KiB
C++
#pragma once
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#include <vector>
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#include <queue>
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#include <cstring>
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#include <iostream>
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#include <math.h>
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#include "CubicSDRDefs.h"
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#include "liquid/liquid.h"
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#include "portaudio.h"
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#ifdef WIN32
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#include "pa_stream.h"
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#include "pa_debugprint.h"
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#endif
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static int patestCallback(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo* timeInfo,
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PaStreamCallbackFlags statusFlags, void *userData);
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class Demodulator {
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public:
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std::queue<std::vector<float> *> audio_queue;
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unsigned int audio_queue_ptr;
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std::vector<float> waveform_points;
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Demodulator();
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~Demodulator();
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void writeBuffer(std::vector<signed char> *data);
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private:
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firfilt_crcf fir_filter;
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firfilt_crcf fir_audio_filter;
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unsigned int bandwidth;
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msresamp_crcf resampler;
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float resample_ratio;
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msresamp_crcf wbfm_resampler;
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float wbfm_resample_ratio;
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unsigned int wbfm_frequency;
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msresamp_crcf audio_resampler;
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float audio_resample_ratio;
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unsigned int audio_frequency;
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PaStreamParameters outputParameters;
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PaStream *stream;
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freqdem fdem;
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};
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