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Audio.h

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#ifndef __Audio_H__
#define __Audio_H__

// Includes
#include "Singleton.h"
#include "Array.h"

// Forward declares
class Music;
class Platform_Sound_SoundStream;
class Sound;
class SoundInstance;
class AudioFormat;
class Asset;

const int MaxSimultaneousSounds = 16;
const int Sound_BufferSize = 16*1024;
const int Music_BufferSize=1024*256; // 256k sound buffer

// Audio
class Audio:public Singleton<Audio>
   {
   public:
      Audio();
      virtual ~Audio(); 

      void Update();
      void Register(Music* stream);
      void Unregister(Music* stream);

      unsigned int PlaySound(const Sound& sound, float priority = 0, bool looping = false);
      SoundInstance* GetSoundInstance(unsigned int handle);

      Platform_Sound_SoundStream* AcquireSoundStream(SoundInstance* instance);
      void ReleaseSoundStream(SoundInstance* instance);

      void* GetStreamBuffer(int minSize);
   private:
      Array<Music*> music_;

      struct SoundInstanceEntry
         {
         unsigned int handle;
         SoundInstance* instance;
         };
      Array<SoundInstanceEntry> soundInstances_;
      unsigned int currentSoundInstanceHandle_;

      Array<Platform_Sound_SoundStream*> freeSoundStreams_;
      struct SoundStreamEntry
         {
         SoundInstance* instanceAssignedTo;
         Platform_Sound_SoundStream* stream;
         };
      Array<SoundStreamEntry> assignedSoundStreams_;

      void* streamBuffer_;
      int streamBufferSize_;

   };

#define siAudio Audio::GetInstance()

#endif /* __Audio_H__ */

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