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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples 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 Digia Plc 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 AUDIOINPUT_H
#define AUDIOINPUT_H
#include <QPixmap>
#include <QWidget>
#include <QObject>
#include <QMainWindow>
#include <QPushButton>
#include <QComboBox>
#include <QByteArray>
#include <qaudioinput.h>
class AudioInfo : public QIODevice
{
Q_OBJECT
public:
AudioInfo(const QAudioFormat &format, QObject *parent);
~AudioInfo();
void start();
void stop();
qreal level() const { return m_level; }
qint64 readData(char *data, qint64 maxlen);
qint64 writeData(const char *data, qint64 len);
private:
const QAudioFormat m_format;
quint16 m_maxAmplitude;
qreal m_level; // 0.0 <= m_level <= 1.0
signals:
void update();
};
class RenderArea : public QWidget
{
Q_OBJECT
public:
RenderArea(QWidget *parent = 0);
void setLevel(qreal value);
protected:
void paintEvent(QPaintEvent *event);
private:
qreal m_level;
QPixmap m_pixmap;
};
class InputTest : public QMainWindow
{
Q_OBJECT
public:
InputTest();
~InputTest();
private:
void initializeWindow();
void initializeAudio();
void createAudioInput();
private slots:
void refreshDisplay();
void notified();
void readMore();
void toggleMode();
void toggleSuspend();
void stateChanged(QAudio::State state);
void deviceChanged(int index);
private:
// Owned by layout
RenderArea *m_canvas;
QPushButton *m_modeButton;
QPushButton *m_suspendResumeButton;
QComboBox *m_deviceBox;
QAudioDeviceInfo m_device;
AudioInfo *m_audioInfo;
QAudioFormat m_format;
QAudioInput *m_audioInput;
QIODevice *m_input;
bool m_pullMode;
QByteArray m_buffer;
static const QString PushModeLabel;
static const QString PullModeLabel;
static const QString SuspendLabel;
static const QString ResumeLabel;
};
#endif
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