/*
 	File:		DeviceControl.h
 
 	Contains:	Component API for doing AVC transactions.
 
 	Version:	Technology:	xxx put version here xxx
 				Release:	QuickTime 4.1
 
 	Copyright:	(c) 1999 by Apple Computer, Inc., all rights reserved.
 
 	Bugs?:		For bug reports, consult the following page on
 				the World Wide Web:
 
 					http://developer.apple.com/bugreporter/
 
*/
#ifndef __DEVICECONTROL__
#define __DEVICECONTROL__

#ifndef __MACTYPES__
	#include <MacTypes.h>
#endif

#ifndef __COMPONENTS__
	#include <Components.h>
#endif





#if PRAGMA_ONCE
#pragma once
#endif

#ifdef __cplusplus
extern "C" {
#endif

#if PRAGMA_IMPORT
#pragma import on
#endif

#if PRAGMA_STRUCT_ALIGN
	#pragma options align=mac68k
#elif PRAGMA_STRUCT_PACKPUSH
	#pragma pack(push, 2)
#elif PRAGMA_STRUCT_PACK
	#pragma pack(2)
#endif

typedef CALLBACK_API_C( UInt32 , DCResponseHandler )(UInt32 fwCommandObjectID, Ptr responseBuffer, UInt32 responseLength);

struct DVCTransactionParams {
	Ptr 							commandBufferPtr;
	UInt32 							commandLength;
	Ptr 							responseBufferPtr;
	UInt32 							responseBufferSize;
	DCResponseHandler *				responseHandler;
};
typedef struct DVCTransactionParams		DVCTransactionParams;
EXTERN_API( ComponentResult )
DeviceControlDoAVCTransaction	(ComponentInstance 		instance,
								 DVCTransactionParams *	params)								FIVEWORDINLINE(0x2F3C, 0x0004, 0x0001, 0x7000, 0xA82A);



/* selectors for component calls */
enum {
	kDeviceControlDoAVCTransactionSelect			= 0x0001
};

#if PRAGMA_STRUCT_ALIGN
	#pragma options align=reset
#elif PRAGMA_STRUCT_PACKPUSH
	#pragma pack(pop)
#elif PRAGMA_STRUCT_PACK
	#pragma pack()
#endif

#ifdef PRAGMA_IMPORT_OFF
#pragma import off
#elif PRAGMA_IMPORT
#pragma import reset
#endif

#ifdef __cplusplus
}
#endif

#endif /* __DEVICECONTROL__ */

