92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
#include <QAudioRecorder>
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#include <QAudioProbe>
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#include <fstream>
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#include "audio/LinearFilter.hpp"
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#include "audio/ZeroCross.hpp"
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#include "scale/Scale.hpp"
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class Tuner : public QObject {
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Q_OBJECT
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Q_PROPERTY(bool running READ GetRunning WRITE SetRunning NOTIFY runningChanged)
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Q_PROPERTY(double freq READ GetFreq NOTIFY freqChanged)
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Q_PROPERTY(double deviation READ GetDeviation NOTIFY deviationChanged)
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Q_PROPERTY(int note READ GetNote NOTIFY noteChanged)
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Q_PROPERTY(int octave READ GetOctave NOTIFY octaveChanged)
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Q_PROPERTY(bool found READ GetFound NOTIFY foundChanged)
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Q_PROPERTY(QString noteName READ GetNoteName NOTIFY noteNameChanged)
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private:
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QAudioRecorder *recorder;
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QAudioEncoderSettings settings;
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QAudioProbe *probe;
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LinearFilter<int16_t> *high_filter;
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ZeroCross<int16_t> *cross;
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Scale *scale;
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static const char *filename_record;
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std::ofstream file_record;
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bool running, found;
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double freq, deviation;
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int note, octave, nb_sample_running;
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int note_found, octave_found, count_found, count_not_found;
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int nb_deviation, deviation_start;
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double deviation_sum;
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static const int rate = 16000;
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static const int defaultNbFrame = 1024;
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static const int defaultFreqMin = 50;
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static const int defaultFreqMax = 2000;
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static const int nbSamplePreventRunning = rate * 40; // 40 seconds
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/// number of analyses to confirm a note
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static const int nbConfirm = 3;
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/// number of analyses to drop a note
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static const int nbDefect = 20;
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/// number of deviation values for average
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static const int nbDeviationValues = 8;
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double deviation_values[nbDeviationValues];
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inline void ComputeFrame(int16_t v);
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void SetFound(int note, int octave, double deviation);
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void SetNotFound();
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void ResetDeviation();
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void UpdateDeviation(double d);
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private slots:
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void AudioCb(const QAudioBuffer &buffer);
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public:
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Tuner();
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~Tuner();
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void Start();
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void Stop();
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void AudioAnalyse(const int16_t *buffer, int size);
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bool GetRunning();
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void SetRunning(bool r);
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double GetFreq();
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int GetNote();
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int GetOctave();
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double GetDeviation();
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bool GetFound();
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const char* GetNoteName();
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/// analyse a file for debug
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static void analyse_file(const char *filename);
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/// write a file with raw audio
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static void set_record(const char *filename_record);
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signals:
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void runningChanged();
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void freqChanged();
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void noteChanged();
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void noteNameChanged();
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void octaveChanged();
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void deviationChanged();
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void foundChanged();
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};
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