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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the examples of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    38 ** $QT_END_LICENSE$

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    40 ****************************************************************************/

    41 

    42 #include <QPixmap>

    43 #include <QWidget>

    44 #include <QObject>

    45 #include <QMainWindow>

    46 #include <QPushButton>

    47 #include <QComboBox>

    48 

    49 #include <qaudioinput.h>

    50 

    51 class AudioInfo : public QIODevice

    52 {

    53     Q_OBJECT

    54 public:

    55     AudioInfo(QObject* parent, QAudioInput* device);

    56     ~AudioInfo();

    57 

    58     void start();

    59     void stop();

    60 

    61     int LinearMax();

    62 

    63     qint64 readData(char *data, qint64 maxlen);

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

    65 

    66     QAudioInput*   input;

    67 

    68 private:

    69     int m_maxValue;

    70 

    71 signals:

    72     void update();

    73 };

    74 

    75 

    76 class RenderArea : public QWidget

    77 {

    78     Q_OBJECT

    79 

    80 public:

    81     RenderArea(QWidget *parent = 0);

    82 

    83     void setLevel(int value);

    84 

    85 protected:

    86     void paintEvent(QPaintEvent *event);

    87 

    88 private:

    89     int level;

    90     QPixmap pixmap;

    91 };

    92 

    93 class InputTest : public QMainWindow

    94 {

    95     Q_OBJECT

    96 public:

    97     InputTest();

    98     ~InputTest();

    99 

   100     QAudioDeviceInfo device;

   101     QAudioFormat   format;

   102     QAudioInput*   audioInput;

   103     AudioInfo*     audioinfo;

   104     QIODevice*     input;

   105     RenderArea*    canvas;

   106 

   107     bool           pullMode;

   108 

   109     QPushButton*   button;

   110     QPushButton*   button2;

   111     QComboBox*     deviceBox;

   112 

   113     char*          buffer;

   114 

   115 private slots:

   116     void refreshDisplay();

   117     void status();

   118     void readMore();

   119     void toggleMode();

   120     void toggleSuspend();

   121     void state(QAudio::State s);

   122     void deviceChanged(int idx);

   123 };

   124