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/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef AUDIODEVICE_H
#define AUDIODEVICE_H
#include <qobject.h>
class AudioDevicePrivate;
class AudioDevice : public QObject {
Q_OBJECT
public:
AudioDevice( unsigned int freq = 44000, unsigned int channels = 2, unsigned int bytesPerSample = 2 );
~AudioDevice();
unsigned int canWrite() const;
void write( char *buffer, unsigned int length );
int bytesWritten();
unsigned int channels() const;
unsigned int frequency() const;
unsigned int bytesPerSample() const;
unsigned int bufferSize() const;
// Each volume level is from 0 to 0xFFFF
static void getVolume( unsigned int& left, unsigned int& right, bool& muted );
static void setVolume( unsigned int left, unsigned int right, bool muted );
static unsigned int leftVolume() { bool muted; unsigned int l, r; getVolume( l, r, muted ); return l; }
static unsigned int rightVolume() { bool muted; unsigned int l, r; getVolume( l, r, muted ); return r; }
static bool isMuted() { bool muted; unsigned int l, r; getVolume( l, r, muted ); return muted; }
static void increaseVolume() { setVolume( leftVolume() + 1968, rightVolume() + 1968, isMuted() ); }
static void decreaseVolume() { setVolume( leftVolume() - 1966, rightVolume() - 1966, isMuted() ); }
public slots:
// Convinence functions derived from above functions
void setVolume( unsigned int level ) { setVolume( level, level, isMuted() ); }
void mute() { setVolume( leftVolume(), rightVolume(), TRUE ); }
void volumeChanged( bool muted );
signals:
void completedIO();
private:
AudioDevicePrivate *d;
};
#endif // AUDIODEVICE_H
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