Qt 4.8: guitartuner.h Example File (demos/mobile/guitartuner/src/guitartuner.h)

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# guitartuner.h Example File

demos/mobile/guitartuner/src/guitartuner.h

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** This file is part of the QtDeclarative module of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of The Qt Company Ltd nor the names of its
     **     contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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     ****************************************************************************/

     #ifndef MAINWINDOW_H
     #define MAINWINDOW_H

     #include <QMainWindow>
     #include <QtDeclarative>
     #include <QAudioDeviceInfo>
     #include <QAudioOutput>
     #include <QAudioInput>
     #include "voicegenerator.h"
     #include "voiceanalyzer.h"

     const int DataFrequencyHzOutput = 44100;
     const int DataFrequencyHzInput = 48000;

     #define MAX_INPUT_VALUE 50
     #define MIN_INPUT_VALUE -50

     class GuitarTuner : public QMainWindow
     {
         Q_OBJECT
     public:
         enum Orientation {
             LockPortrait,
             LockLandscape,
             Auto
         };
         explicit GuitarTuner(QWidget *parent = 0);
         qreal getVolume();
         qreal getMicrophoneSensitivity();
         bool getMuteState();
         void setOrientation(Orientation orientation);

     signals:

     public slots:
         void modeChanged(bool isInput);
         void muteStateChanged(bool isMuted);
         void targetFrequencyChanged(qreal targetFrequency);
         void outputStateChanged(QAudio::State state);
         void setMaxVolumeLevel(qreal);

     private:
         void initAudioOutput();
         void initAudioInput();
         VoiceGenerator *m_voicegenerator;
         VoiceAnalyzer *m_analyzer;
         QObject *qmlObject;
         QAudioOutput *m_audioOutput;
         QAudioInput *m_audioInput;
         QAudioFormat m_format_output;
         QAudioFormat m_format_input;
         QDeclarativeView *m_guitarTunerUI;
     };

     #endif // MAINWINDOW_H