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/****************************************************************************
**
** 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 Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <math.h>
#define BUFFER_SIZE 32768
#include <QObject>
#include <QMainWindow>
#include <QIODevice>
#include <QTimer>
#include <QPushButton>
#include <QComboBox>
#include <QAudioOutput>
class Generator : public QIODevice
{
Q_OBJECT
public:
Generator(QObject *parent);
~Generator();
void start();
void stop();
char *t;
int len;
int pos;
int total;
char *buffer;
bool finished;
int chunk_size;
qint64 readData(char *data, qint64 maxlen);
qint64 writeData(const char *data, qint64 len);
private:
int putShort(char *t, unsigned int value);
int fillData(char *start, int frequency, int seconds);
};
class AudioTest : public QMainWindow
{
Q_OBJECT
public:
AudioTest();
~AudioTest();
QAudioDeviceInfo device;
Generator* gen;
QAudioOutput* audioOutput;
QIODevice* output;
QTimer* timer;
QAudioFormat settings;
bool pullMode;
char* buffer;
QPushButton* button;
QPushButton* button2;
QComboBox* deviceBox;
private slots:
void status();
void writeMore();
void toggle();
void togglePlay();
void state(QAudio::State s);
void deviceChanged(int idx);
};
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