SoundInput.h

// -*- Mode: C++ -*-
#ifndef SOUNDIN_H__
#define SOUNDIN_H__
 
#include "JS8_Audio/AudioDevice.h"
 
#include <QAudioDevice>
#include <QAudioSource>
#include <QDateTime>
#include <QObject>
#include <QPointer>
#include <QScopedPointer>
#include <QString>
 
// Gets audio data from sound sample source and passes it to a sink device
class SoundInput : public QObject {
    Q_OBJECT;
 
  public:
    SoundInput(QObject *parent = nullptr) : QObject{parent}, m_sink{nullptr} {}
 
    ~SoundInput();
 
    // sink must exist from the start call until the next start call or
    // stop call
    Q_SLOT void start(QAudioDevice const &, int framesPerBuffer,
                      AudioDevice *sink,
                      AudioDevice::Channel = AudioDevice::Mono);
    Q_SLOT void suspend();
    Q_SLOT void resume();
    Q_SLOT void stop();
 
    Q_SIGNAL void error(QString message) const;
    Q_SIGNAL void status(QString message) const;
 
  private:
    // used internally
    Q_SLOT void handleStateChanged(QAudio::State) const;
 
    bool audioError() const;
 
    QScopedPointer<QAudioSource> m_stream;
    QPointer<AudioDevice> m_sink;
};
 
#endif