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#ifndef __JE_AUDIO_H__
#define __JE_AUDIO_H__

#include "../core/je_configuration.h"
#if defined(jin_audio)

#include "../utils/je_macros.h"
#include "../common/je_subsystem.hpp"

#include "SDL2/SDL.h"

namespace JinEngine
{
	namespace Audio
	{

		class Source;
    
        ///
        /// Audio manager.
        ///
		template<class SubAudio>
		class AudioManager : public Subsystem<SubAudio>
		{
		public:
            ///
            /// Audio state.
            ///
			enum State
			{
				PLAY ,
				STOP ,
				PAUSE,
			};

            ///
            /// Play all sources whose state is playing.
            ///
			virtual void play() = 0;

            ///
            /// Stop and remove all sources from the queue. 
            ///
			virtual void stop() = 0;

            ///
            /// Pause audio.
            ///
			virtual void pause() = 0;

            ///
            /// Resume audio.
            ///
			virtual void resume() = 0;

            ///
            /// Set global audio volume.
            ///
			virtual void setVolume(float volume) = 0;

		protected:
            singleton(AudioManager);

            ///
            /// AudioManager constructor.
            ///
			AudioManager() 
				: volume(1) 
				, state(State::PLAY)
			{};

            ///
            /// AudioManager destructor.
            ///
			virtual ~AudioManager() {};

			float volume;
			State state;

		};

	} // namespace Audio 
} // namespace JinEngine

#endif // jin_audio

#endif // __JE_AUDIO_H__