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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module 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 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 __GE_IGA_INTERFACES__
#define __GE_IGA_INTERFACES__
#include <QMutex>
namespace GE {
#define AUDIO_FREQUENCY 22050
#define AUDIO_SAMPLE_TYPE short
#define AUDIO_SAMPLE_BITS 16
class IAudioSource {
public:
IAudioSource();
virtual ~IAudioSource();
virtual int pullAudio( AUDIO_SAMPLE_TYPE *target, int bufferLength ) = 0;
virtual bool canBeDestroyed() { return false; }
IAudioSource *m_next; // for listing, do not touch if you dont know what you are doing.
};
class CAudioMixer : public IAudioSource {
public:
CAudioMixer();
virtual ~CAudioMixer();
void destroyList(); // destroy all the sources in the list
IAudioSource* addAudioSource( IAudioSource *s ); // add new audio source to the list
bool removeAudioSource( IAudioSource *s ); // remove an audio source from the list
int pullAudio( AUDIO_SAMPLE_TYPE *target, int bufferLength );
void setGeneralVolume( float vol );
protected:
QMutex m_mutex;
int m_fixedGeneralVolume;
AUDIO_SAMPLE_TYPE *m_mixingBuffer;
int m_mixingBufferLength;
IAudioSource *m_sourceList;
};
};
#endif
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