/*
       File:       DeviceControl.h
   
       Contains:   Component API for doing AVC transactions.
   
       Version:    Technology: xxx put version here xxx
                   Release:    QuickTime 6.0.2
   
       Copyright:  (c) 1999-2001 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;
  if CALL_NOT_IN_CARBON
  EXTERN_API( ComponentResult )
  DeviceControlDoAVCTransaction   (ComponentInstance      instance,
                                   DVCTransactionParams * params)                             FIVEWORDINLINE(0x2F3C, 0x0004, 0x0001, 0x7000, 0xA82A);
  
  /* selectors for component calls */
  enum {
      kDeviceControlDoAVCTransactionSelect       = 0x0001
  };
  endif  /* CALL_NOT_IN_CARBON */
  
  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__ */