AudioPlaySource.h

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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _AUDIO_PLAY_SOURCE_H_
#define _AUDIO_PLAY_SOURCE_H_

struct Auditionable {
    virtual ~Auditionable() { }
};

class AudioPlaySource
{
public:
    virtual ~AudioPlaySource() { }

    virtual void play(int startFrame) = 0;

    virtual void stop() = 0;

    virtual bool isPlaying() const = 0;

    virtual int getCurrentPlayingFrame() = 0;

    virtual bool getOutputLevels(float &left, float &right) = 0;

    virtual int getSourceSampleRate() const = 0;

    virtual int getTargetSampleRate() const = 0;

    virtual int getTargetBlockSize() const = 0;

    virtual int getTargetChannelCount() const = 0;

    virtual void setAuditioningEffect(Auditionable *) = 0;

};

#endif