/*
     File:       DiscRecording/DRCoreDevice.h
 
     Contains:   Device interfaces for Disc Recording.
 
     Version:    Technology: Mac OS X
                 Release:    Mac OS X
 
     Copyright:  (c) 2002-2007 Apple Inc.  All Rights Reserved.
 
     Bugs?:      For bug reports, consult the following page on
                 the World Wide Web:
 
                     http://developer.apple.com/bugreporter/
 
*/

/*!	@header 	
	@abstract		Device interfaces for Disc Recording.

	@discussion		
*/

#ifndef _H_DRCoreDevice
#define _H_DRCoreDevice

#if PRAGMA_ONCE
#pragma once
#endif

#ifndef __CORESERVICES__
#include <CoreServices/CoreServices.h>
#endif

#ifndef _H_DRCoreObject
#include <DiscRecording/DRCoreObject.h>
#endif

#ifndef __AVAILABILITYMACROS__
#include <AvailabilityMacros.h>
#endif

#ifndef _MATH_H_
#include <math.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

#ifndef _IOKIT_IOKITLIB_H
#include <IOKit/IOKitLib.h>
#endif

/*!
	@typedef DRDeviceRef
	This is the type of a reference to DRDevices.
*/
typedef struct __DRDevice* DRDeviceRef;

/*!
	@function	DRDeviceGetTypeID
	@abstract	Returns the type identifier of all DRDevice instances.
*/
extern
CFTypeID DRDeviceGetTypeID(void)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRCopyDeviceArray
	@abstract	Returns an array of all writable devices connected to the system.
	@discussion	FireWire, USB, and other technologies allow users to connect and disconnect
				devices while a computer is on. The device array returned by this function
				is a snapshot that is not guaranteed to stay current for the lifetime
				of a process.
				
				Since device connections are dynamic, a better option than this function is to 
				maintain a list of attached devices by listening for 
				@link kDRDeviceAppearedNotification kDRDeviceAppearedNotification @/link and @link kDRDeviceDisappearedNotification kDRDeviceDisappearedNotification @/link
				notifications. This function is most useful for initially populating a list of 
				devices.
	@result		A CFArray containing the devices attached to the system at the time the
				function is called.
*/
extern
CFArrayRef DRCopyDeviceArray(void)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceCopyDeviceForBSDName
	@abstract	Returns the device reference corresponding to the BSD device name.
	@param		name	The /dev entry for the device (i.e., disk1)
	@result		A DRDevice reference for the device corresponding to the BSD name.
*/
extern
DRDeviceRef DRDeviceCopyDeviceForBSDName(CFStringRef name)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceCopyDeviceForIORegistryEntryPath
	@abstract	Returns the device reference corresponding to the IORegistry entry.
	@param		path	The IORegistry entry path corresponding to the device. 
	@result		A DRDevice reference for the device corresponding to the IORegistry entry path.
*/
extern
DRDeviceRef DRDeviceCopyDeviceForIORegistryEntryPath(CFStringRef path)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceIsValid
	@abstract	Determines whether the device is still attached and turned on.
	@discussion	Devices can be removed from a system while a client has a reference to them. This function 
				allows clients to check if a device reference they are holding is still usable.
	@param		device	The device reference to check.
	@result		A boolean indicating whether the device reference is still usable (TRUE)
				or not (FALSE).
*/
extern
Boolean DRDeviceIsValid(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceOpenTray
	@abstract	Commands a device to open up its tray.
	@discussion	This function will open the tray of the device, if it has one, if and only if
				the device does not currently have mounted media. 
	@param		device		Device to open.
	@result		An error code indicating if the tray could be opened.
*/
extern
OSStatus DRDeviceOpenTray(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceCloseTray
	@abstract	Commands a device to close its tray.
	@discussion	This function will close the tray of the device, if it has one. 
	@param		device		Device to close.
	@result		An error code indicating if the tray could be closed.
*/
extern
OSStatus DRDeviceCloseTray(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceEjectMedia
	@abstract	Commands a device to unmount and eject media.
	@discussion	If media is present but cannot be unmounted, this function will fail and return
				an error.  If there is no media in the device, this function is
				equivalent to @link DRDeviceOpenTray DRDeviceOpenTray @/link.
	@param		device		Device to eject.
	@result		An error code indicating whether the media could be ejected.
*/
extern
OSStatus DRDeviceEjectMedia(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceAcquireMediaReservation
	@abstract	Indicates an interest in reserving blank media.
	@discussion	Blank media participates in a reservation system thats allows applications
				to express claims on blank media to other applications. Indicating an
				interest to reserve blank media does not guarantee acquisition--there may be
				other applications that have indicated an interest in the same media.
				
				Your application will receive a @link kDRDeviceStatusChangedNotification kDRDeviceStatusChangedNotification @/link 
				notification with a value of <tt>true</tt> for the @link kDRDeviceMediaIsReservedKey kDRDeviceMediaIsReservedKey @/link
				when a blank media reservation has been acquired.
				
				This function may be called multiple times. Each time it is called, a call to
				@link DRDeviceReleaseMediaReservation DRDeviceReleaseMediaReservation @/link must be made at a later time or the
				process will never fully rescind its interest in the blank media reservation.
	@param		device	The device reference for which to indicate an interest.
*/
extern
void DRDeviceAcquireMediaReservation(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceReleaseMediaReservation
	@abstract	Rescind an interest in the blank media reservation.
	@discussion	If the process currently has a reservation, it will be released 
				and passed on to the next interested process.
	@param		device	The device reference for which to rescind an interest.
*/
extern
void DRDeviceReleaseMediaReservation(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceAcquireExclusiveAccess
	@abstract	Attempts to acquire an exclusive access session with the device.
	@discussion	If this function succeeds, the device becomes unusable by any other process.
				All volumes mounted from media in the drive must be unmounted before
				exclusive access can be granted.  The Disc Recording engine attempts to
				unmount volumes for you, but this call will fail if some volumes could
				not be unmounted.
				
				Your application may call this function multiple times. Each time,
				a call to @link DRDeviceReleaseExclusiveAccess DRDeviceReleaseExclusiveAccess @/link must be made at a later time
				or the process will never release its exclusive access.
	@param		device	The device reference for which to acquire exclusive access.
	@result		An error code indicating whether exclusive access could be acquired.
*/
extern
OSStatus DRDeviceAcquireExclusiveAccess(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceReleaseExclusiveAccess
	@abstract	Release exclusive access to a device.
	@discussion	This function will release one request for exclusive access made by a process
				that called DRDeviceAcquireExclusiveAccess. A call to this function must be
				made for every call to @link DRDeviceAcquireExclusiveAccess DRDeviceAcquireExclusiveAccess @/link, otherwise the process
				will never release its exclusive access.
	@param		device	The device reference for which to release exclusive access.
*/
extern
void DRDeviceReleaseExclusiveAccess(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceCopyInfo
	@abstract	Returns information about the device.
	@discussion	This function returns information that identifies the device and describes 
				its capabilites. The information includes the vendor's name, the product 
				identifier, whether the device can burn CDs or DVDs, and so on.
	@param		device		The device to query.
	@result		A CFDictionary object identifying the device and its capabilities.
*/
extern
CFDictionaryRef DRDeviceCopyInfo(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@function	DRDeviceCopyStatus
	@abstract	Returns the status of the device.
	@discussion	This function returns information about the status of the device. This
				information includes whether media is present or not, and, if present, 
				a descripton of the media including its size, kind, and so on. 
	@param		device		The device to query.
	@result		A CFDictionary object describing the status of the device and 
				any media it contains.
*/
extern
CFDictionaryRef DRDeviceCopyStatus(DRDeviceRef device)
AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;


/* ---------------------------------- */
/*	Device notifications. */
/*!
	@const kDRDeviceAppearedNotification
	@discussion	Notification sent when a device has become available.
				Because users can connect and disconnect FireWire, USB, and other devices while a
				computer is on, you should maintain your own list of attached devices and rely on notifications
				to keep the list current.
*/
extern const CFStringRef kDRDeviceAppearedNotification				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceDisappearedNotification
	@discussion	Notification sent when a device is no longer available.
				Because users can connect and disconnect FireWire, USB, and other devices while a
				computer is on, you should maintain your own list of attached devices and rely on notifications
				to keep the list current.
 */
extern const CFStringRef kDRDeviceDisappearedNotification			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceStatusChangedNotification
	@discussion	Notification sent when a device's status changes, usually because a disc
				has been inserted or removed.  The value of the info parameter for your notification 
				callback is equivalent to the dictionary object reference returned from a call to 
				@link DRDeviceCopyStatus DRDeviceCopyStatus @/link.
*/
extern const CFStringRef kDRDeviceStatusChangedNotification			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* ---------------------------------- */
/*	Keys for the dictionary returned by DRDeviceCopyInfo. */
/*!
	@const kDRDeviceSupportLevelKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key is 
				a reference to a CFString object indicating how well the engine supports the device.
*/
extern const CFStringRef kDRDeviceSupportLevelKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceIORegistryEntryPathKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key is 
				a reference to a CFString object containing a copy of the path to the device entry in the IORegistry.
*/
extern const CFStringRef kDRDeviceIORegistryEntryPathKey			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceVendorNameKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key is 
				a reference to a CFString object containing the vendor name extracted from the device.
*/
extern const CFStringRef kDRDeviceVendorNameKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceProductNameKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key is 
				a reference to a CFString object containing the product name extracted from the device.
*/
extern const CFStringRef kDRDeviceProductNameKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceFirmwareRevisionKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key is 
				a reference to a CFString object containing the firmware revision extracted from the device.
*/
extern const CFStringRef kDRDeviceFirmwareRevisionKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDevicePhysicalInterconnectKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key is 
				a reference to a CFString object containing the type of the bus the device is on.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectKey			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDevicePhysicalInterconnectLocationKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this
				key is a reference to a CFString object containing the physical interconnect location.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectLocationKey	AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceWriteCapabilitiesKey
	@discussion	A key for the dictionary object  returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key is 
				a reference to a CFString object describing the capabilities the drive has for writing to different 
				media.
*/
extern const CFStringRef kDRDeviceWriteCapabilitiesKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceLoadingMechanismCanEjectKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key
				is a reference to a CFBoolean object that indicates if the loading mechanism of the drive can eject.
*/
extern const CFStringRef kDRDeviceLoadingMechanismCanEjectKey		AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceLoadingMechanismCanInjectKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key
				is a reference to a CFBoolean object that indicates if the loading mechanism of the drive can inject.
*/
extern const CFStringRef kDRDeviceLoadingMechanismCanInjectKey		AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceLoadingMechanismCanOpenKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key
				is a reference to a CFBoolean object that indicates if the loading mechanism of the drive can open.
*/
extern const CFStringRef kDRDeviceLoadingMechanismCanOpenKey		AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceWriteBufferSizeKey
	@discussion	A key for the dictionary object returned by @link DRDeviceCopyInfo DRDeviceCopyInfo @/link. The value of this key
				is a reference to a CFNumber object containing the size of the write buffer of the device.
*/
extern const CFStringRef kDRDeviceWriteBufferSizeKey				AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/* ---------------------------------- */
/* Support levels */
/*!
	@const kDRDeviceSupportLevelNone
	@discussion	One value for the @link kDRDeviceSupportLevelKey kDRDeviceSupportLevelKey @/link dictionary key. This value indicates
				the engine does not support the device and it cannot be used.
*/
extern const CFStringRef kDRDeviceSupportLevelNone					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceSupportLevelUnsupported
	@discussion	One value for the @link kDRDeviceSupportLevelKey kDRDeviceSupportLevelKey @/link dictionary key. This value indicates
				the device is unsupported but the Disc Recording engine will try to use it anyway.
*/
extern const CFStringRef kDRDeviceSupportLevelUnsupported			AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceSupportLevelVendorSupported
	@discussion	One value for the @link kDRDeviceSupportLevelKey kDRDeviceSupportLevelKey @/link dictionary key. This value
				indicates the device vendor has provided support for the device.
*/
extern const CFStringRef kDRDeviceSupportLevelVendorSupported		AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceSupportLevelAppleSupported
	@discussion	One value for the @link kDRDeviceSupportLevelKey kDRDeviceSupportLevelKey @/link dictionary key. This value
				indicates that Apple has provided support for the device.
*/
extern const CFStringRef kDRDeviceSupportLevelAppleSupported		AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceSupportLevelAppleShipping
	@discussion	One value for the @link kDRDeviceSupportLevelKey kDRDeviceSupportLevelKey @/link dictionary key. This value indicates that Apple
				has provided support for the device and it has shipped in a machine made by Apple.
*/
extern const CFStringRef kDRDeviceSupportLevelAppleShipping			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* ---------------------------------- */
/* Types of physical interconnect */
/*!
	@const	kDRDevicePhysicalInterconnectATAPI
	@discussion	One value for the @link kDRDevicePhysicalInterconnectKey kDRDevicePhysicalInterconnectKey @/link dictionary key. This value indicates that the
				device is connected by an ATAPI interface.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectATAPI			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDevicePhysicalInterconnectFibreChannel
	@discussion	One value for the @link kDRDevicePhysicalInterconnectKey kDRDevicePhysicalInterconnectKey @/link dictionary key. This value indicates that the
				device is connected by a Fibre Channel interface.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectFibreChannel	AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const	kDRDevicePhysicalInterconnectFireWire
	@discussion	One value for the @link kDRDevicePhysicalInterconnectKey kDRDevicePhysicalInterconnectKey @/link dictionary key. This value indicates that the
				device is connected by a FireWire interface.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectFireWire		AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDevicePhysicalInterconnectUSB
	@discussion	One value for the @link kDRDevicePhysicalInterconnectKey kDRDevicePhysicalInterconnectKey @/link dictionary key. This value indicates that the
				device is connected by a USB interface.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectUSB			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDevicePhysicalInterconnectSCSI
	@discussion	One value for the @link kDRDevicePhysicalInterconnectKey kDRDevicePhysicalInterconnectKey @/link dictionary key. This value indicates that the
				device is connected by a SCSI interface.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectSCSI			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* ---------------------------------- */
/* Physical interconnect locations */
/*!
	@const	kDRDevicePhysicalInterconnectLocationInternal
	@discussion	One value for the @link kDRDevicePhysicalInterconnectLocationKey kDRDevicePhysicalInterconnectLocationKey @/link dictionary key.
				This value indicates that the device is on an internal bus.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectLocationInternal	AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDevicePhysicalInterconnectLocationExternal
	@discussion	One value for the @link kDRDevicePhysicalInterconnectLocationKey kDRDevicePhysicalInterconnectLocationKey @/link dictionary key.
				This value indicates that the device is on an external bus.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectLocationExternal	AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDevicePhysicalInterconnectLocationUnknown
	@discussion	One value for the @link kDRDevicePhysicalInterconnectLocationKey kDRDevicePhysicalInterconnectLocationKey @/link dictionary key.
				This value indicates that the software cannot determine whether the device is
				on an internal or external bus.
*/
extern const CFStringRef kDRDevicePhysicalInterconnectLocationUnknown	AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* ---------------------------------- */
/* Keys for the write capabilities dictionary, which is a subdictionary under
	kDRDeviceWriteCapabilitiesKey, in the dictionary returned by DRDeviceCopyInfo. */
/*!
	@const kDRDeviceCanWriteKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to any type of media.
*/
extern const CFStringRef kDRDeviceCanWriteKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteCDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to some type of CD-based media.
*/
extern const CFStringRef kDRDeviceCanWriteCDKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteCDRKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to CD-R media.
*/
extern const CFStringRef kDRDeviceCanWriteCDRKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteCDRWKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to CD-RW media.
*/
extern const CFStringRef kDRDeviceCanWriteCDRWKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to some type of DVD-based media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDRKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD-R media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDRKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDRDualLayerKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD-R DL media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDRDualLayerKey			AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDRWKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD-RW media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDRWKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDRWDualLayerKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD-RW DL media.
 */
extern const CFStringRef kDRDeviceCanWriteDVDRWDualLayerKey			AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
	
/*!
	@const kDRDeviceCanWriteDVDRAMKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD-RAM media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDRAMKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDPlusRKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD+R media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDPlusRKey				AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDPlusRDoubleLayerKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD+R double
				layer media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDPlusRDoubleLayerKey	AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDPlusRWKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD+RW media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDPlusRWKey				AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDPlusRWDoubleLayerKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to DVD+RW double layer media.
 */
extern const CFStringRef kDRDeviceCanWriteDVDPlusRWDoubleLayerKey	AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
		
/*!
	@const kDRDeviceCanWriteBDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to some type of BD-based (Blu-ray) media.
*/
extern const CFStringRef kDRDeviceCanWriteBDKey						AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteBDRKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to BD-R media.
*/
extern const CFStringRef kDRDeviceCanWriteBDRKey					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteBDREKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to BD-RE media.
*/
extern const CFStringRef kDRDeviceCanWriteBDREKey					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteHDDVDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to some type of HD DVD-based media.
*/
extern const CFStringRef kDRDeviceCanWriteHDDVDKey					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteHDDVDRKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to HD DVD-R media.
*/
extern const CFStringRef kDRDeviceCanWriteHDDVDRKey					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteHDDVDRDualLayerKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to HD DVD-R DL media.
 */
	extern const CFStringRef kDRDeviceCanWriteHDDVDRDualLayerKey	AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteHDDVDRAMKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to HD DVD-RAM media.
*/
extern const CFStringRef kDRDeviceCanWriteHDDVDRAMKey				AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const kDRDeviceCanWriteHDDVDRWKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to HD DVD-RW media.
*/

extern const CFStringRef kDRDeviceCanWriteHDDVDRWKey				AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
/*!
	@const kDRDeviceCanWriteHDDVDRWDualLayerKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write to HD DVD-RW DL media.
*/

extern const CFStringRef kDRDeviceCanWriteHDDVDRWDualLayerKey		AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
/*!
	@const kDRDeviceCanWriteCDTextKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write CD-Text information.
*/
extern const CFStringRef kDRDeviceCanWriteCDTextKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanWriteIndexPointsKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write index points to CD media.
*/
extern const CFStringRef kDRDeviceCanWriteIndexPointsKey			AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanWriteISRCKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can write International
				Standard Recording Code (ISRC) to CD media.
*/
extern const CFStringRef kDRDeviceCanWriteISRCKey					AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanWriteCDTAOKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device supports a track-at-once (TAO)
				burn strategy for CD.
*/
extern const CFStringRef kDRDeviceCanWriteCDTAOKey					AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanWriteCDSAOKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device supports a session-at-once (SAO)
				burn strategy for CD.
*/
extern const CFStringRef kDRDeviceCanWriteCDSAOKey					AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanWriteCDRawKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device supports a raw mode 
				burn strategy for CD.

				A raw mode burn writes client-defined lead-in, program area, and lead-out data to CD media 
				in a single pass. It supports options such as single-pass writing of a multisession 
				disc. The Multi-Media Command Set (MMC) standard name for this strategy is "raw" but it 
				is often called disc-at-once (DAO).
*/
extern const CFStringRef kDRDeviceCanWriteCDRawKey					AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanWriteDVDDAOKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device supports a disc-at-once (DAO)
				burn strategy on DVD media. This burn strategy does not apply to CD media.
*/
extern const CFStringRef kDRDeviceCanWriteDVDDAOKey					AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceCanTestWriteCDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can perform a test write to CD media.
*/
extern const CFStringRef kDRDeviceCanTestWriteCDKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanTestWriteDVDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device can perform a test write to DVD media.
*/
extern const CFStringRef kDRDeviceCanTestWriteDVDKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanUnderrunProtectCDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device has burn underrun protection when
				writing to CD media.
*/
extern const CFStringRef kDRDeviceCanUnderrunProtectCDKey			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCanUnderrunProtectDVDKey
	@discussion	A key for the @link kDRDeviceWriteCapabilitiesKey kDRDeviceWriteCapabilitiesKey @/link dictionary in the device info dictionary.  The value
				is a reference to a CFBoolean object indicating whether the device has burn underrun protection when
				writing to DVD media.
*/
extern const CFStringRef kDRDeviceCanUnderrunProtectDVDKey			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;


/* ---------------------------------- */
/*	Keys for the dictionary returned by DRDeviceCopyStatus. */
/*!
	@const kDRDeviceIsBusyKey
	@discussion	A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFBoolean object indicating if the device is busy.
*/
extern const CFStringRef kDRDeviceIsBusyKey							AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceIsTrayOpenKey
	@discussion	A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFBoolean object indicating if the device's tray is open.
*/
extern const CFStringRef kDRDeviceIsTrayOpenKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMaximumWriteSpeedKey
	@discussion	A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFNumber object containing the maximum write speed in KB/s, where 1KB = 1000 bytes.
*/
extern const CFStringRef kDRDeviceMaximumWriteSpeedKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceCurrentWriteSpeedKey
	@discussion	A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFNumber object containing the current write speed in KB/s, where 1KB = 1000 bytes.
*/
extern const CFStringRef kDRDeviceCurrentWriteSpeedKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaStateKey
	@discussion	A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFString object containing information about the state of the media.
*/
extern const CFStringRef kDRDeviceMediaStateKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@constant kDRDeviceMediaInfoKey
	@discussion A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFDictionary object containing information about the media in the drive.
*/
extern const CFStringRef kDRDeviceMediaInfoKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceBurnSpeedsKey
	@discussion	A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key 
				is a reference to a CFArray object containing the available burn speeds. This key may not
				be accessible if there is no disc in the drive.
*/
extern const CFStringRef kDRDeviceBurnSpeedsKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@constant kDRDeviceTrackRefsKey
	@discussion A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFArray object containing a list of DRTrack objects describing any tracks that
				are already on the disc.
*/
extern const CFStringRef kDRDeviceTrackRefsKey						AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@constant kDRDeviceTrackInfoKey
	@discussion A key for the dictionary returned by @link DRDeviceCopyStatus DRDeviceCopyStatus @/link. The value of this key is 
				a reference to a CFDictionary object containing dictionaries describing on-disc tracks.  DRTrackRef
				dictionaries from the kDRDeviceTrackRefsKey constant are used as keys into this dictionary.
*/
extern const CFStringRef kDRDeviceTrackInfoKey						AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/* ---------------------------------- */
/*	Media states */
/*!
	@const	kDRDeviceMediaStateMediaPresent
	@discussion	One value for the @link kDRDeviceMediaStateKey kDRDeviceMediaStateKey @/link dictionary key. This value indicates that some
				kind of media is present in the drive.  Check the value of the kDRDeviceMediaInfoKey dictionary key
				for specific media information.
*/
extern const CFStringRef kDRDeviceMediaStateMediaPresent			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaStateInTransition
	@discussion	One value for the @link kDRDeviceMediaStateKey kDRDeviceMediaStateKey @/link dictionary key. This value indicates that the
				media is in transition, typically spinning up after being inserted or
				spinning down in preparation for ejecting.
*/
extern const CFStringRef kDRDeviceMediaStateInTransition			AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaStateNone
	@discussion	One value for the @link kDRDeviceMediaStateKey kDRDeviceMediaStateKey @/link dictionary key. This value indicates that there is
				no disc present in the drive.
*/
extern const CFStringRef kDRDeviceMediaStateNone					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;
	

/* ---------------------------------- */
/* Keys for the media info dictionary, which is a subdictionary under kDRDeviceMediaInfoKey,
	in the dictionary returned by DRDeviceCopyStatus. */
/*!
	@const kDRDeviceMediaBSDNameKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key 
				is a reference to a CFString object containing the BSD name assigned to the device.
*/
extern const CFStringRef kDRDeviceMediaBSDNameKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaIsBlankKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFBoolean
				object indicating whether the media is blank and has no data on it.
*/
extern const CFStringRef kDRDeviceMediaIsBlankKey					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaIsAppendableKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFBoolean
				object indicating whether the disc is appendable -- in other words, whether new sessions can be written.
*/
extern const CFStringRef kDRDeviceMediaIsAppendableKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaIsOverwritableKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFBoolean
				object indicating whether the disc is writable -- in other words, whether it can be fully (re)written.
*/
extern const CFStringRef kDRDeviceMediaIsOverwritableKey			AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceMediaIsErasableKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key 
				is a reference to a CFBoolean object indicating whether the disc can be erased.
*/
extern const CFStringRef kDRDeviceMediaIsErasableKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaIsReservedKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFBoolean
				object indicating whether the disc is reserved for exclusive use by the current process.
*/
extern const CFStringRef kDRDeviceMediaIsReservedKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaBlocksOverwritableKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFNumber
				object containing the number of writable blocks on the disc.
*/
extern const CFStringRef kDRDeviceMediaBlocksOverwritableKey		AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const kDRDeviceMediaBlocksFreeKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFNumber
				object containing the number of free blocks on the disc.
*/
extern const CFStringRef kDRDeviceMediaBlocksFreeKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;
	
/*!
	@const kDRDeviceMediaBlocksUsedKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFNumber
				object containing the number of blocks used by data on the disc.
*/
extern const CFStringRef kDRDeviceMediaBlocksUsedKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaDoubleLayerL0DataZoneBlocksKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFNumber
				object containing the number of blocks on layer 0 of a double layer burnable disc.
*/
extern const CFStringRef kDRDeviceMediaDoubleLayerL0DataZoneBlocksKey		AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;
	
/*!
	@const kDRDeviceMediaTrackCountKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFNumber
				object containing the total number of tracks on the disc in all sessions.
*/
extern const CFStringRef kDRDeviceMediaTrackCountKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;
	
/*!
	@const kDRDeviceMediaSessionCountKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key is a reference to a CFNumber
				object containing the number of sessions on the disc.
*/
extern const CFStringRef kDRDeviceMediaSessionCountKey				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaClassKey
	@discussion	A key for the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key 
				is a reference to a CFString object indicating the class of media present in the drive.
*/
extern const CFStringRef kDRDeviceMediaClassKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const kDRDeviceMediaTypeKey
	@discussion	A key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary. The value of this key 
				is a reference to a CFString object indicating the type of media present in the drive.
*/
extern const CFStringRef kDRDeviceMediaTypeKey						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* --------------------------------------- */
/* Media classes */
/*!
	@const	kDRDeviceMediaClassCD
	@discussion	One value for the @link kDRDeviceMediaClassKey kDRDeviceMediaClassKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is CD-based.
*/
extern const CFStringRef kDRDeviceMediaClassCD						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaClassDVD
	@discussion	One value for the @link kDRDeviceMediaClassKey kDRDeviceMediaClassKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is DVD-based.
*/
extern const CFStringRef kDRDeviceMediaClassDVD						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaClassBD
	@discussion	One value for the @link kDRDeviceMediaClassKey kDRDeviceMediaClassKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is BD-based (Blu-ray).
*/
extern const CFStringRef kDRDeviceMediaClassBD						AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaClassHDDVD
	@discussion	One value for the @link kDRDeviceMediaClassKey kDRDeviceMediaClassKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is HD DVD-based.
*/
extern const CFStringRef kDRDeviceMediaClassHDDVD					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaClassUnknown
	@discussion	One value for the @link kDRDeviceMediaClassKey kDRDeviceMediaClassKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the media class is unknown.
*/
extern const CFStringRef kDRDeviceMediaClassUnknown					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* --------------------------------------- */
/* Media types */
/*!
	@const	kDRDeviceMediaTypeCDROM
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a CD-ROM.
*/
extern const CFStringRef kDRDeviceMediaTypeCDROM					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeCDR
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a CD-R.
*/
extern const CFStringRef kDRDeviceMediaTypeCDR						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeCDRW
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a CD-RW.
*/
extern const CFStringRef kDRDeviceMediaTypeCDRW						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDROM
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD-ROM.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDROM					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDRAM
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD-RAM.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDRAM					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDR
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD-R.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDR						AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDRDualLayer
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD-R DL.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDRDualLayer			AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDRW
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD-RW.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDRW					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

	
/*!
	@const	kDRDeviceMediaTypeDVDRWDualLayer
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD-RW DL.
 */
extern const CFStringRef kDRDeviceMediaTypeDVDRWDualLayer			AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;
		
/*!
	@const	kDRDeviceMediaTypeDVDPlusR
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD+R.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDPlusR					AVAILABLE_MAC_OS_X_VERSION_10_3_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDPlusRDoubleLayer
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the media info dictionary.
				This value indicates that the disc is a DVD+R Double Layer.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDPlusRDoubleLayer		AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDPlusRW
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a DVD+RW.
*/
extern const CFStringRef kDRDeviceMediaTypeDVDPlusRW				AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeDVDPlusRWDoubleLayer
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the media info dictionary.
			This value indicates that the disc is a DVD+RW Double Layer.
 */
extern const CFStringRef kDRDeviceMediaTypeDVDPlusRWDoubleLayer		AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;	

/*!
	@const	kDRDeviceMediaTypeBDR
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a BD-R.
*/
extern const CFStringRef kDRDeviceMediaTypeBDR						AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeBDR
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a BD-RE.
*/
extern const CFStringRef kDRDeviceMediaTypeBDRE						AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeBDROM
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a BD-ROM.
*/
extern const CFStringRef kDRDeviceMediaTypeBDROM					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeHDDVDROM
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a HD DVD-ROM.
*/
extern const CFStringRef kDRDeviceMediaTypeHDDVDROM					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeHDDVDR
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a HD DVD-R.
*/
extern const CFStringRef kDRDeviceMediaTypeHDDVDR					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeHDDVDRDualLayer
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a HD DVD-R DL.
 */
	extern const CFStringRef kDRDeviceMediaTypeHDDVDRDualLayer		AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;


/*!
	@const	kDRDeviceMediaTypeHDDVDRAM
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a HD DVD-RAM.
*/
extern const CFStringRef kDRDeviceMediaTypeHDDVDRAM					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeHDDVDRW
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a HD DVD-RW.
*/
extern const CFStringRef kDRDeviceMediaTypeHDDVDRW					AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeHDDVDRWDualLayer
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc is a HD DVD-RW DL.
*/
extern const CFStringRef kDRDeviceMediaTypeHDDVDRWDualLayer			AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceMediaTypeUnknown
	@discussion	One value for the @link kDRDeviceMediaTypeKey kDRDeviceMediaTypeKey @/link dictionary key in the @link kDRDeviceMediaInfoKey kDRDeviceMediaInfoKey @/link dictionary.
				This value indicates that the disc type is unknown.
*/
extern const CFStringRef kDRDeviceMediaTypeUnknown					AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* ---------------------------------------- */
/* Common predefined values for burn speeds. */
/*!
	@const	kDRDeviceBurnSpeedCD1x
	@discussion			A predefined value for the minimum CD burn speed of 176.4 kilobytes 
						per second, where 1 kilobyte = 1,000 bytes.
*/
extern const float	kDRDeviceBurnSpeedCD1x							AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceBurnSpeedDVD1x
	@discussion			A predefined value for the minimum DVD burn speed of 1,385.0 kilobytes 
						per second, where 1 kilobyte = 1,000 bytes.
*/
extern const float	kDRDeviceBurnSpeedDVD1x							AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/*!
	@const	kDRDeviceBurnSpeedBD1x
	@discussion			A predefined value for the minimum BD burn speed of 4,496.0 kilobytes 
						per second, where 1 kilobyte = 1,000 bytes.
*/
extern const float	kDRDeviceBurnSpeedBD1x							AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceBurnSpeedHDDVD1x
	@discussion			A predefined value for the minimum HD DVD burn speed of 4,496.0 kilobytes 
 per second, where 1 kilobyte = 1,000 bytes.
 */
extern const float	kDRDeviceBurnSpeedHDDVD1x						AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@const	kDRDeviceBurnSpeedMax
	@discussion			A predefined value used to request the maximum speed at which a device can 
						perform a burn. On receiving a burn request of kDRDeviceBurnSpeedMax, a drive
						selects the highest usable speed given its capabilities, the bus bandwidth, and
						the capabilities of the recordable disc.
*/
extern const float	kDRDeviceBurnSpeedMax							AVAILABLE_MAC_OS_X_VERSION_10_2_AND_LATER;

/* ---------------------------------------- */
/* Macros and functions for converting KPS speeds to and from approximate X-factors.  Note that
	the X-factor is an approximate measure, particularly in modern drives which rarely maintain
	a constant linear velocity.  As in the MMC specification, speeds in the engine are
	always specified as KPS at the innermost track of the disc. */
/*!
	@defined DRDeviceKPSForCDXFactor
	@discussion	Macro for converting from an x-factor (1x, 8x, 20x, etc) to the real KB/s value 
				for a CD burn.  For this macro, 1 KB = 1000 bytes.
*/
#define DRDeviceKPSForCDXFactor(xfactor)	((float)(xfactor) * kDRDeviceBurnSpeedCD1x)

/*!
	@defined DRDeviceKPSForDVDXFactor
	@discussion	A macro for converting from an x-factor (1x, 8x, 20x, etc.) to the real KB/s value 
				for a DVD burn, where 1 KB = 1000 bytes.
*/
#define DRDeviceKPSForDVDXFactor(xfactor)	((float)(xfactor) * kDRDeviceBurnSpeedDVD1x)

/*!
	@defined DRDeviceCDXFactorForKPS
	@discussion	A macro for converting from a KB/s value to the equivalent x-factor (1x, 8x, 20x, etc.)
				for a CD burn, where 1 KB = 1000 bytes.
*/
#define DRDeviceCDXFactorForKPS(kps)		(UInt32)floor((kps)/kDRDeviceBurnSpeedCD1x + 0.5)

/*!
	@defined DRDeviceDVDXFactorForKPS
	@discussion	A macro for converting from a KB/s value to the equivalent x-factor (1x, 8x, 20x, etc.)
				for a DVD burn, where 1 KB = 1000 bytes.
*/
#define DRDeviceDVDXFactorForKPS(kps)		(UInt32)floor((kps)/kDRDeviceBurnSpeedDVD1x + 0.5)

/*!
	@function	DRDeviceKPSForXFactor
	@abstract	Converts from media type specific X-factors to K/s values.
	@discussion	Since X-factors are media type specific and DiscRecording uses K/s values to
				specify burn speeds, this function can be used to easily and accurately convert
				from raw K/s values to X-factors when appropriate.
	@param		deviceOrMediaType	Either a DRDeviceRef for a device containing media, or a
									CFStringRef corresponding to a media type.
				xfactor		A media type specific X-factor, corresponding to the media type identified
							by the deviceOrMediaType param, that will be converted into K/s.
	@result		The media type specific X-factor converted to K/s, or 0 if the X-factor could not
				be converted to a K/s value.
*/
extern
float DRDeviceKPSForXFactor(DRTypeRef deviceOrMediaType,float xfactor)
AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;

/*!
	@function	DRDeviceXFactorForKPS
	@abstract	Converts from K/s values to media type specific X-factors.
	@discussion	Since DiscRecording uses K/s values to specify burn speeds and X-factors are
				media type specific, this function can be used to easily and accurately convert
				from X-factors to raw K/s values when appropriate.
	@param		deviceOrMediaType	Either a DRDeviceRef for a device containing media, or a
									CFStringRef corresponding to a media type.
				kps		The K/s value to be converted into an X-factor, corresponding to the
						media type identified by the deviceOrMediaType param.
	@result		The K/s value converted to media type specific X-factor, or 0 if the K/s value
				could not be converted to a media type specfic X-factor.
*/
extern
float DRDeviceXFactorForKPS(DRTypeRef deviceOrMediaType,float kps)
AVAILABLE_MAC_OS_X_VERSION_10_5_AND_LATER;


#ifdef __cplusplus
}
#endif

#endif /* _H_DRCoreDevice */