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Diffstat (limited to 'examples/audiooutput/audiooutput.h')
-rw-r--r-- | examples/audiooutput/audiooutput.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/examples/audiooutput/audiooutput.h b/examples/audiooutput/audiooutput.h new file mode 100644 index 000000000..805168e7c --- /dev/null +++ b/examples/audiooutput/audiooutput.h @@ -0,0 +1,122 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 Nokia Corporation and its Subsidiary(-ies) 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, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef AUDIOOUTPUT_H +#define AUDIOOUTPUT_H + +#include <math.h> + +#include <QObject> +#include <QMainWindow> +#include <QIODevice> +#include <QTimer> +#include <QPushButton> +#include <QComboBox> +#include <QByteArray> + +#include <qaudiooutput.h> + +class Generator : public QIODevice +{ + Q_OBJECT +public: + Generator(const QAudioFormat &format, qint64 durationUs, int frequency, QObject *parent); + ~Generator(); + + void start(); + void stop(); + + qint64 readData(char *data, qint64 maxlen); + qint64 writeData(const char *data, qint64 len); + qint64 bytesAvailable() const; + +private: + void generateData(const QAudioFormat &format, qint64 durationUs, int frequency); + +private: + qint64 m_pos; + QByteArray m_buffer; +}; + +class AudioTest : public QMainWindow +{ + Q_OBJECT +public: + AudioTest(); + ~AudioTest(); + +private: + void initializeWindow(); + void initializeAudio(); + void createAudioOutput(); + +private: + QTimer* m_pullTimer; + + // Owned by layout + QPushButton* m_modeButton; + QPushButton* m_suspendResumeButton; + QComboBox* m_deviceBox; + + QAudioDeviceInfo m_device; + Generator* m_generator; + QAudioOutput* m_audioOutput; + QIODevice* m_output; // not owned + QAudioFormat m_format; + + bool m_pullMode; + QByteArray m_buffer; + + static const QString PushModeLabel; + static const QString PullModeLabel; + static const QString SuspendLabel; + static const QString ResumeLabel; + +private slots: + void notified(); + void pullTimerExpired(); + void toggleMode(); + void toggleSuspendResume(); + void stateChanged(QAudio::State state); + void deviceChanged(int index); +}; + +#endif + |