SourceListener.h

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//
// C++ Interface: Audio::SourceListener
//
#ifndef __AUDIO_SOURCELISTENER_H__INCLUDED__
#define __AUDIO_SOURCELISTENER_H__INCLUDED__

#include "Exceptions.h"
#include "Types.h"
#include "RenderableSource.h"

namespace Audio {

    // Forward declarations
    
    class Source;
    

    class SourceListener
    {
    protected:
        struct {
            int attach : 1;
            int play : 1;
            int update : 1;
        } events;
        
        SourceListener()
        {
            // Want everything
            events.attach =
            events.update =
            events.play = 1;
        }
        
    public:
        
        bool wantAttachEvents() const { return events.attach != 0; }
        bool wantPlayEvents() const { return events.play != 0; }
        bool wantUpdateEvents() const { return events.update != 0; }
        
        virtual void onPreAttach(Source &source, bool detach) = 0;
        
        virtual void onPostAttach(Source &source, bool detach) = 0;
        
        
        virtual void onUpdate(Source &source, int updateFlags) = 0;
        
        virtual void onPrePlay(Source &source, bool stop) = 0;
        
        virtual void onPostPlay(Source &source, bool stop) = 0;
        
        virtual void onEndOfStream(Source &source) = 0;
    };


    class UpdateSourceListener : public SourceListener
    {
    public:
        UpdateSourceListener()
        {
            // Just updates
            events.attach =
            events.play = 0;
            events.update = 1;
        }
        
        virtual void onPreAttach(Source &source, bool detach) {};
        
        virtual void onPostAttach(Source &source, bool detach) {};
        
        virtual void onPrePlay(Source &source, bool stop) {};
        
        virtual void onPostPlay(Source &source, bool stop) {};
        
        virtual void onEndOfStream(Source &source) {};
    };

};

#endif//__AUDIO_SOURCELISTENER_H__INCLUDED__