/*
 	File:		Start.h
 
 	Contains:	Start Manager Interfaces.
 
 	Version:	Technology:	System 7.5
 				Release:	QuickTime 4.0
 
 	Copyright:	(c) 1987-1993, 1996-1998 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 __START__
#define __START__

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

/*
	Important: When the major version number of kExtensionTableVersion and the value
	returned by gestaltExtensionTableVersion change, it indicates that the Extension
	Table startup mechanism has radically changed and code that doesn't know about
	the new major version must not attempt to use the Extension Table startup
	mechanism.
	
	Changes to the minor version number of kExtensionTableVersion indicate that the
	definition of the ExtensionElement structure has been extended, but the fields
	defined for previous minor versions of kExtensionTableVersion have not changed.
*/

enum {
	kExtensionTableVersion		= 0x00000100					/* current ExtensionTable version (1.0.0) */
};

/* ExtensionNotification message codes */

enum {
	extNotificationBeforeFirst	= 0,							/* Before any extensions have loaded */
	extNotificationAfterLast	= 1,							/* After all extensions have loaded */
	extNotificationBeforeCurrent = 2,							/* Before extension at extElementIndex is loaded */
	extNotificationAfterCurrent	= 3								/* After extension at extElementIndex is loaded */
};


struct ExtensionElement {
	Str31 							fileName;					/* The file name */
	long 							parentDirID;				/* the file's parent directory ID */
																/* and everything after ioNamePtr in the HParamBlockRec.fileParam variant */
	short 							ioVRefNum;					/* always the real volume reference number (not a drive, default, or working dirID) */
	short 							ioFRefNum;
	SInt8 							ioFVersNum;
	SInt8 							filler1;
	short 							ioFDirIndex;				/* always 0 in table */
	SInt8 							ioFlAttrib;
	SInt8 							ioFlVersNum;
	FInfo 							ioFlFndrInfo;
	long 							ioDirID;
	unsigned short 					ioFlStBlk;
	long 							ioFlLgLen;
	long 							ioFlPyLen;
	unsigned short 					ioFlRStBlk;
	long 							ioFlRLgLen;
	long 							ioFlRPyLen;
	unsigned long 					ioFlCrDat;
	unsigned long 					ioFlMdDat;
};
typedef struct ExtensionElement			ExtensionElement;
typedef ExtensionElement *				ExtensionElementPtr;

struct ExtensionTableHeader {
	UInt32 							extTableHeaderSize;			/* size of ExtensionTable header ( equal to offsetof(ExtensionTable, extElements[0]) ) */
	UInt32 							extTableVersion;			/* current ExtensionTable version (same as returned by gestaltExtTableVersion Gestalt selector) */
	UInt32 							extElementIndex;			/* current index into ExtensionElement records (zero-based) */
	UInt32 							extElementSize;				/* size of ExtensionElement */
	UInt32 							extElementCount;			/* number of ExtensionElement records in table (1-based) */
};
typedef struct ExtensionTableHeader		ExtensionTableHeader;

struct ExtensionTable {
	ExtensionTableHeader 			extTableHeader;				/* the ExtensionTableHeader */
	ExtensionElement 				extElements[1];				/* one element for each extension to load */
};
typedef struct ExtensionTable			ExtensionTable;
typedef ExtensionTable *				ExtensionTablePtr;
typedef ExtensionTablePtr *				ExtensionTableHandle;
typedef CALLBACK_API( void , ExtensionNotificationProcPtr )(UInt32 message, void *param, ExtensionElementPtr extElement);
typedef CALLBACK_API( void , ExtensionTableHandlerProcPtr )(UInt32 message, void *param, ExtensionTableHandle extTableHandle);
typedef STACK_UPP_TYPE(ExtensionNotificationProcPtr) 			ExtensionNotificationUPP;
typedef STACK_UPP_TYPE(ExtensionTableHandlerProcPtr) 			ExtensionTableHandlerUPP;
enum { uppExtensionNotificationProcInfo = 0x00000FC0 }; 		/* pascal no_return_value Func(4_bytes, 4_bytes, 4_bytes) */
enum { uppExtensionTableHandlerProcInfo = 0x00000FC0 }; 		/* pascal no_return_value Func(4_bytes, 4_bytes, 4_bytes) */
#if MIXEDMODE_CALLS_ARE_FUNCTIONS
EXTERN_API(ExtensionNotificationUPP)
NewExtensionNotificationProc    (ExtensionNotificationProcPtr userRoutine);
EXTERN_API(ExtensionTableHandlerUPP)
NewExtensionTableHandlerProc    (ExtensionTableHandlerProcPtr userRoutine);
EXTERN_API(void)
CallExtensionNotificationProc    (ExtensionNotificationUPP userRoutine,
								UInt32					message,
								void *					param,
								ExtensionElementPtr		extElement);
EXTERN_API(void)
CallExtensionTableHandlerProc    (ExtensionTableHandlerUPP userRoutine,
								UInt32					message,
								void *					param,
								ExtensionTableHandle	extTableHandle);
#else
#define NewExtensionNotificationProc(userRoutine) 				(ExtensionNotificationUPP)NewRoutineDescriptor((ProcPtr)(userRoutine), uppExtensionNotificationProcInfo, GetCurrentArchitecture())
#define NewExtensionTableHandlerProc(userRoutine) 				(ExtensionTableHandlerUPP)NewRoutineDescriptor((ProcPtr)(userRoutine), uppExtensionTableHandlerProcInfo, GetCurrentArchitecture())
#define CallExtensionNotificationProc(userRoutine, message, param, extElement)  CALL_THREE_PARAMETER_UPP((userRoutine), uppExtensionNotificationProcInfo, (message), (param), (extElement))
#define CallExtensionTableHandlerProc(userRoutine, message, param, extTableHandle)  CALL_THREE_PARAMETER_UPP((userRoutine), uppExtensionTableHandlerProcInfo, (message), (param), (extTableHandle))
#endif

union DefStartRec {
	struct {
		SignedByte 						sdExtDevID;
		SignedByte 						sdPartition;
		SignedByte 						sdSlotNum;
		SignedByte 						sdSRsrcID;
	} 								slotDev;
	struct {
		SignedByte 						sdReserved1;
		SignedByte 						sdReserved2;
		short 							sdRefNum;
	} 								scsiDev;
};
typedef union DefStartRec				DefStartRec;

typedef DefStartRec *					DefStartPtr;

struct DefVideoRec {
	SignedByte 						sdSlot;
	SignedByte 						sdsResource;
};
typedef struct DefVideoRec				DefVideoRec;

typedef DefVideoRec *					DefVideoPtr;

struct DefOSRec {
	SignedByte 						sdReserved;
	SignedByte 						sdOSType;
};
typedef struct DefOSRec					DefOSRec;

typedef DefOSRec *						DefOSPtr;
																							#if TARGET_OS_MAC && TARGET_CPU_68K && !TARGET_RT_MAC_CFM
																							#pragma parameter GetDefaultStartup(__A0)
																							#endif
EXTERN_API( void )
GetDefaultStartup				(DefStartPtr 			paramBlock)							ONEWORDINLINE(0xA07D);

																							#if TARGET_OS_MAC && TARGET_CPU_68K && !TARGET_RT_MAC_CFM
																							#pragma parameter SetDefaultStartup(__A0)
																							#endif
EXTERN_API( void )
SetDefaultStartup				(DefStartPtr 			paramBlock)							ONEWORDINLINE(0xA07E);

																							#if TARGET_OS_MAC && TARGET_CPU_68K && !TARGET_RT_MAC_CFM
																							#pragma parameter GetVideoDefault(__A0)
																							#endif
EXTERN_API( void )
GetVideoDefault					(DefVideoPtr 			paramBlock)							ONEWORDINLINE(0xA080);

																							#if TARGET_OS_MAC && TARGET_CPU_68K && !TARGET_RT_MAC_CFM
																							#pragma parameter SetVideoDefault(__A0)
																							#endif
EXTERN_API( void )
SetVideoDefault					(DefVideoPtr 			paramBlock)							ONEWORDINLINE(0xA081);

																							#if TARGET_OS_MAC && TARGET_CPU_68K && !TARGET_RT_MAC_CFM
																							#pragma parameter GetOSDefault(__A0)
																							#endif
EXTERN_API( void )
GetOSDefault					(DefOSPtr 				paramBlock)							ONEWORDINLINE(0xA084);

																							#if TARGET_OS_MAC && TARGET_CPU_68K && !TARGET_RT_MAC_CFM
																							#pragma parameter SetOSDefault(__A0)
																							#endif
EXTERN_API( void )
SetOSDefault					(DefOSPtr 				paramBlock)							ONEWORDINLINE(0xA083);

EXTERN_API( void )
SetTimeout						(short 					count);

EXTERN_API( void )
GetTimeout						(short *				count);

/*
	InstallExtensionNotificationProc

	Installs an ExtensionNotificationUPP.

	Parameters:
		extNotificationProc	The ExtensionNotificationUPP to install.

	Results:
		noErr		0		The ExtensionNotificationUPP was installed.
		paramErr	-50		This ExtensionNotificationUPP has already been installed.
		memFullErr	-108	Not enough memory to install the ExtensionNotificationUPP.
*/
EXTERN_API( OSErr )
InstallExtensionNotificationProc (ExtensionNotificationUPP  extNotificationProc)			TWOWORDINLINE(0x7000, 0xAA7D);


/*
	RemoveExtensionNotificationProc

	Removes an ExtensionNotificationUPP.
	
	Note:	ExtensionNotificationUPPs can't call RemoveExtensionNotificationProc.

	Parameters:
		extNotificationProc	The ExtensionNotificationUPP to remove.

	Results:
		noErr		0		The ExtensionNotificationUPP was removed.
		paramErr	-50		The ExtensionNotificationUPP was not found, or
							RemoveExtensionNotificationProc was called from within
							a ExtensionNotificationUPP (ExtensionNotificationUPPs can't
							call RemoveExtensionNotificationProc).
*/
EXTERN_API( OSErr )
RemoveExtensionNotificationProc	(ExtensionNotificationUPP  extNotificationProc)				TWOWORDINLINE(0x7001, 0xAA7D);


/*
	InstallExtensionTableHandlerProc

	Installs an ExtensionTableHandlerUPP. Control is taken away from the system's default
	handler and the ExtensionTableHandlerUPP is responsible for all changes to the
	ExtensionTable (except for incrementing extElementIndex between extensions). This is
	always the first handler called with extNotificationBeforeFirst and
	extNotificationBeforeCurrent messages and the last handler called with
	extNotificationAfterLast and extNotificationAfterCurrent messages. extElementIndex
	is always incremented immediately after the ExtensionTableHandlerUPP is called with
	the extNotificationAfterCurrent message.
	
	There can only be one ExtensionTableHandler installed.
	
	Warning:	The only safe time to change what ExtensionElement is at
				ExtensionTable.extElements[extElementIndex] is when your
				ExtensionTableHandlerUPP is called with the extNotificationAfterCurrent
				message. You may change the ExtensionTable or the extElementIndex at other
				times, but you must ensure that the ExtensionElement at
				ExtensionTable.extElements[extElementIndex] stays the same.
				
	Note:		If the ExtensionTable or the contents of the folders included in the
				ExtensionTable are changed after installing an ExtensionTableHandler,
				RemoveExtensionTableHandlerProc cannot be called.

	Parameters:
		extMgrProc			The ExtensionTableHandlerUPP to install.
		extTable			A pointer to an ExtensionTableHandle where
							InstallExtensionTableHandlerProc will return the current
							ExtensionTableHandle. You don't own the handle itself and
							must not dispose of it, but you can change the extElementIndex.
							the extElementCount, and the ExtensionElements in the table.

	Results:
		noErr		0		The ExtensionTableHandlerUPP was installed.
		paramErr	-50		Another ExtensionTableHandlerUPP has already been installed.
		memFullErr	-108	Not enough memory to install the ExtensionTableHandlerUPP.
*/
EXTERN_API( OSErr )
InstallExtensionTableHandlerProc (ExtensionTableHandlerUPP  extMgrProc,
								 ExtensionTableHandle *	extTable)							TWOWORDINLINE(0x7002, 0xAA7D);


/*
	RemoveExtensionTableHandlerProc

	Remove an ExtensionTableUPP. Control is passed back to the default handler.

	Parameters:
		extMgrProc			The ExtensionTableUPP to remove.

	Results:
		noErr		0		The ExtensionTableUPP was removed.
		paramErr	-50		This ExtensionTableUPP was not installed,
							or the ExtensionTable no longer matches the
							original boot ExtensionTable.
*/
EXTERN_API( OSErr )
RemoveExtensionTableHandlerProc	(ExtensionTableHandlerUPP  extMgrProc)						TWOWORDINLINE(0x7003, 0xAA7D);


#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 /* __START__ */

