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#include <QPixmap>

#include <QWidget>

#include <QObject>

#include <QMainWindow>

#include <QPushButton>

#include <QComboBox>

#include <qaudioinput.h>

class AudioInfo : public QIODevice

{

    Q_OBJECT

public:

    ~AudioInfo();

    void start();

    void stop();

    int LinearMax();

    qint64 readData(char *data, qint64 maxlen);

    qint64 writeData(const char *data, qint64 len);

private:

    int m_maxValue;

signals:

    void update();

};

class RenderArea : public QWidget

{

    Q_OBJECT

public:

    RenderArea(QWidget *parent = 0);

    void setLevel(int value);

protected:

    void paintEvent(QPaintEvent *event);

private:

    int level;

    QPixmap pixmap;

};

class InputTest : public QMainWindow

{

    Q_OBJECT

public:

    InputTest();

    ~InputTest();

private slots:

    void refreshDisplay();

    void status();

    void readMore();

    void toggleMode();

    void toggleSuspend();

    void state(QAudio::State s);

    void deviceChanged(int idx);

};