#ifndef _IOKIT_IOAUDIOENGINE_H
#define _IOKIT_IOAUDIOENGINE_H

#include <IOKit/IOService.h>
#include <IOKit/audio/IOAudioTypes.h>
#include <IOKit/IOBufferMemoryDescriptor.h>

class OSDictionary;
class OSCollection;
class OSOrderedSet;
class IOAudioEngineUserClient;
class IOAudioDevice;
class IOAudioStream;
class IOAudioControl;
class IOCommandGate;


#endif 
