[556] | 1 | /****************************************************************************
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| 2 | **
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[846] | 3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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[556] | 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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| 6 | **
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| 7 | ** This file is part of the examples of the Qt Toolkit.
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| 8 | **
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[846] | 9 | ** $QT_BEGIN_LICENSE:BSD$
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| 10 | ** You may use this file under the terms of the BSD license as follows:
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[556] | 11 | **
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[846] | 12 | ** "Redistribution and use in source and binary forms, with or without
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| 13 | ** modification, are permitted provided that the following conditions are
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| 14 | ** met:
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| 15 | ** * Redistributions of source code must retain the above copyright
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| 16 | ** notice, this list of conditions and the following disclaimer.
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| 17 | ** * Redistributions in binary form must reproduce the above copyright
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| 18 | ** notice, this list of conditions and the following disclaimer in
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| 19 | ** the documentation and/or other materials provided with the
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| 20 | ** distribution.
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| 21 | ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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| 22 | ** the names of its contributors may be used to endorse or promote
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| 23 | ** products derived from this software without specific prior written
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| 24 | ** permission.
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[556] | 25 | **
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[846] | 26 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 27 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 28 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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| 29 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| 30 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 31 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 32 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 33 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 34 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 35 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 36 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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[556] | 37 | ** $QT_END_LICENSE$
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| 38 | **
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| 39 | ****************************************************************************/
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| 40 |
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[846] | 41 | #ifndef AUDIOINPUT_H
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| 42 | #define AUDIOINPUT_H
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| 43 |
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[556] | 44 | #include <QPixmap>
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| 45 | #include <QWidget>
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| 46 | #include <QObject>
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| 47 | #include <QMainWindow>
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| 48 | #include <QPushButton>
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| 49 | #include <QComboBox>
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[769] | 50 | #include <QByteArray>
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[556] | 51 |
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| 52 | #include <qaudioinput.h>
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| 53 |
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| 54 | class AudioInfo : public QIODevice
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| 55 | {
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| 56 | Q_OBJECT
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| 57 | public:
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[769] | 58 | AudioInfo(const QAudioFormat &format, QObject *parent);
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[556] | 59 | ~AudioInfo();
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| 60 |
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| 61 | void start();
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| 62 | void stop();
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| 63 |
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[769] | 64 | qreal level() const { return m_level; }
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[556] | 65 |
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| 66 | qint64 readData(char *data, qint64 maxlen);
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| 67 | qint64 writeData(const char *data, qint64 len);
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| 68 |
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| 69 | private:
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[769] | 70 | const QAudioFormat m_format;
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| 71 | quint16 m_maxAmplitude;
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| 72 | qreal m_level; // 0.0 <= m_level <= 1.0
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[556] | 73 |
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| 74 | signals:
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| 75 | void update();
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| 76 | };
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| 77 |
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| 78 |
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| 79 | class RenderArea : public QWidget
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| 80 | {
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| 81 | Q_OBJECT
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| 82 |
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| 83 | public:
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| 84 | RenderArea(QWidget *parent = 0);
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| 85 |
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[769] | 86 | void setLevel(qreal value);
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[556] | 87 |
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| 88 | protected:
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| 89 | void paintEvent(QPaintEvent *event);
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| 90 |
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| 91 | private:
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[769] | 92 | qreal m_level;
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| 93 | QPixmap m_pixmap;
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[556] | 94 | };
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| 95 |
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| 96 | class InputTest : public QMainWindow
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| 97 | {
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| 98 | Q_OBJECT
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| 99 | public:
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| 100 | InputTest();
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| 101 | ~InputTest();
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| 102 |
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[769] | 103 | private:
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| 104 | void initializeWindow();
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| 105 | void initializeAudio();
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| 106 | void createAudioInput();
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| 107 |
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[556] | 108 | private slots:
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| 109 | void refreshDisplay();
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[769] | 110 | void notified();
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[556] | 111 | void readMore();
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| 112 | void toggleMode();
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| 113 | void toggleSuspend();
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[769] | 114 | void stateChanged(QAudio::State state);
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| 115 | void deviceChanged(int index);
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[651] | 116 |
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| 117 | private:
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[769] | 118 | // Owned by layout
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| 119 | RenderArea *m_canvas;
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| 120 | QPushButton *m_modeButton;
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| 121 | QPushButton *m_suspendResumeButton;
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| 122 | QComboBox *m_deviceBox;
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[651] | 123 |
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[769] | 124 | QAudioDeviceInfo m_device;
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| 125 | AudioInfo *m_audioInfo;
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| 126 | QAudioFormat m_format;
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| 127 | QAudioInput *m_audioInput;
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| 128 | QIODevice *m_input;
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| 129 | bool m_pullMode;
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| 130 | QByteArray m_buffer;
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[651] | 131 |
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[769] | 132 | static const QString PushModeLabel;
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| 133 | static const QString PullModeLabel;
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| 134 | static const QString SuspendLabel;
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| 135 | static const QString ResumeLabel;
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[556] | 136 | };
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| 137 |
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[846] | 138 | #endif
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| 139 |
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