www.pudn.com > cdx.zip > DEVICE.H

/*C4*/ 
/****************************************************************/ 
/*	Author:	Jethro Wright, III 			TS :  1/18/1994  0:38	*/ 
/*	Date:	01/01/1994											*/ 
/*			device.h :											*/ 
/*																*/ 
/*	History:													*/ 
/*		01/01/1994  jw3  also sprach zarathustra....			*/ 
/****************************************************************/ 
 
 
#if			! defined( __DEVICE_H__ ) 
#define		__DEVICE_H__ 
 
 
			// 
			//	the device data structures describing run-time 
			//	access to cdroms.... 
			// 
 
struct DeviceHeader { 
	struct DeviceHeader far * nextDeviceHeader ; 
	WORD 	deviceAttributes ; 
	VFunc	deviceStrat ; 
	VFunc	deviceEntry ; 
	BYTE	deviceName[ 8 ] ; 
	WORD	reserved ; 
	BYTE	driveLetter ; 
	BYTE	numberUnits ; 
} ; 
 
struct DeviceList { 
	BYTE	subUnit ; 
	struct	DeviceHeader far * deviceAddress ; 
} ; 
 
 
			//	this is the principal part of the ioctl cmd interface 
			//	structure, thru which all cmds are to be xferred to the 
			//	cdrom driver.... 
 
struct RequestHeader { 
	BYTE	len ;						// == lgth of the total pkg of which 
										//	the RequestHeader is only a part 
	BYTE	unit ;						// the unit nbr of the target device  
	BYTE	command ;					// the primary cmd to be performed 
										//	in the case of audio cds, it's 
										//	usu an ioctl read or a write cmd 
	WORD	status ;					// the target device status following 
										//	the cmd 
	BYTE	reserved[ 8 ] ; 
} ; 
 
 
struct IOCTLSvcReq { 
	struct		RequestHeader rqh ; 
	BYTE 		media ; 
	void  		far * xferBufr ; 
	WORD		byteCnt ; 
	WORD		sector ; 
	BYTE 		far * volumeId ; 
} ; 
 
 
/***************************************************************** 
 
	the following structures are used to communicate w/ the actual 
	cdrom device driver, thru the IOCTL class.  however, certain 
	CDRom mbr fns use these structures to extract the information 
	needed to carry out their tasks.... 
 
*****************************************************************/ 
 
 
		//	the play audio cmd is unique bec of the layout of its ioctl 
		//	packet 
struct PlayCommand { 
	RequestHeader	rqh ; 
	BYTE			addressMode ; 
	DWORD			startAddr ; 
	DWORD			nbrSects ; 
} ; 
 
struct DoorLockCmd { 
	BYTE	command ; 
	BYTE	lockCode ; 
} ; 
 
struct CloseTrayCmd { 
	BYTE	command ; 
} ; 
 
struct ResetCommand { 
	BYTE	command ; 
} ; 
 
struct EjectCommand { 
	BYTE	command ; 
} ; 
 
struct UPCCommand { 
	BYTE	command ; 
	BYTE	controlAddress ; 
	BYTE	upc[ 7 ] ; 
	BYTE	zero ; 
	BYTE	aFrame ; 
} ; 
 
struct TrackInfoCmd { 
	BYTE	command ; 
	BYTE	trackNumber ; 
	DWORD	startAddress ; 
	BYTE	control ; 
} ; 
 
struct QChannelInfoCmd { 
	BYTE	command ; 
	BYTE	control ; 
	BYTE	trackNumber ; 
	BYTE	x ; 
	BYTE	minute ; 
	BYTE	second ; 
	BYTE	frame ; 
	BYTE	zero ; 
	BYTE	pMin ; 
	BYTE	pSec ; 
	BYTE	pFrame ; 
} ; 
 
struct DiskInfoCmd { 
	BYTE	command ; 
	BYTE	lowTrackNumber ; 
	BYTE	highTrackNumber ; 
	DWORD	leadOut ; 
} ; 
 
struct DeviceStatusCmd { 
	BYTE	command ; 
	DWORD	deviceStatus ; 
} ; 
 
struct PlayStatusCmd { 
	BYTE	command ; 
	WORD	statusBits ;				// bit #0 == audio paused; the rest 
										//  reserved.... 
	DWORD	startAddress ;				// == the starting and ending addrs 
	DWORD	endAddress ;				//  of the last play/next resume 
} ; 
 
 
#endif