89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef __GE_IGA_INTERFACES__
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#define __GE_IGA_INTERFACES__
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#include <QMutex>
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namespace GE {
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#define AUDIO_FREQUENCY 22050
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#define AUDIO_SAMPLE_TYPE short
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#define AUDIO_SAMPLE_BITS 16
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class IAudioSource {
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public:
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IAudioSource();
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virtual ~IAudioSource();
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virtual int pullAudio( AUDIO_SAMPLE_TYPE *target, int bufferLength ) = 0;
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virtual bool canBeDestroyed() { return false; }
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IAudioSource *m_next; // for listing, do not touch if you don't know what you are doing.
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};
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class CAudioMixer : public IAudioSource {
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public:
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CAudioMixer();
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virtual ~CAudioMixer();
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void destroyList(); // destroy all the sources in the list
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IAudioSource* addAudioSource( IAudioSource *s ); // add new audio source to the list
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bool removeAudioSource( IAudioSource *s ); // remove an audio source from the list
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int pullAudio( AUDIO_SAMPLE_TYPE *target, int bufferLength );
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void setGeneralVolume( float vol );
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protected:
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QMutex m_mutex;
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int m_fixedGeneralVolume;
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AUDIO_SAMPLE_TYPE *m_mixingBuffer;
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int m_mixingBufferLength;
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IAudioSource *m_sourceList;
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};
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};
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#endif
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