IODVDMedia

Inherits from
IOMedia
Availability
Available in OS X v10.6 and later.
Declared in
IODVDMedia.h

Overview

The IODVDMedia class is a random-access disk device abstraction for DVDs.

The IODVDMedia class is a random-access disk device abstraction for DVDs.

Tasks

Miscellaneous

Instance Methods

getSpeed

virtual IOReturn getSpeed( UInt16 *kilobytesPerSecond);
Parameters
kilobytesPerSecond

Returns the current speed used for data transfers, in kB/s.

kDVDSpeedMin specifies the minimum speed for all DVD media (1X). kDVDSpeedMax specifies the maximum speed supported in hardware.

Return Value

Returns the status of the operation.

Discussion

Get the current speed used for data transfers.

readDiscInfo

virtual IOReturn readDiscInfo( IOMemoryDescriptor *buffer, UInt16 *actualByteCount );
Parameters
buffer

Buffer for the data transfer. The size of the buffer implies the size of the data transfer.

actualByteCount

Returns the actual number of bytes transferred in the data transfer.

Return Value

Returns the status of the data transfer.

Discussion

Issue an MMC READ DISC INFORMATION command.

readRZoneInfo

virtual IOReturn readRZoneInfo( IOMemoryDescriptor *buffer, UInt32 address, DVDRZoneInfoAddressType addressType, UInt16 *actualByteCount );
Parameters
buffer

Buffer for the data transfer. The size of the buffer implies the size of the data transfer.

address

As documented by MMC.

addressType

As documented by MMC.

actualByteCount

Returns the actual number of bytes transferred in the data transfer.

Return Value

Returns the status of the data transfer.

Discussion

Issue an MMC READ RZONE INFORMATION (READ TRACK INFORMATION) command.

readStructure

virtual IOReturn readStructure( IOMemoryDescriptor *buffer, const DVDStructureFormat format, const UInt32 address, const UInt8 layer, const UInt8 grantID );
Parameters
buffer

Buffer for the data transfer. The size of the buffer implies the size of the data transfer.

format

As documented by MMC.

address

As documented by MMC.

layer

As documented by MMC.

grantID

As documented by MMC.

Return Value

Returns the status of the data transfer.

Discussion

Issue an MMC READ DVD STRUCTURE command.

reportKey

virtual IOReturn reportKey( IOMemoryDescriptor *buffer, const DVDKeyClass keyClass, const UInt32 address, const UInt8 grantID, const DVDKeyFormat format );
Parameters
buffer

Buffer for the data transfer. The size of the buffer implies the size of the data transfer. Pass null for the kDVDKeyFormatAGID_Invalidate format case.

keyClass

As documented by MMC.

address

As documented by MMC.

grantID

As documented by MMC.

format

As documented by MMC.

Return Value

Returns the status of the data transfer.

Discussion

Issue an MMC REPORT KEY command.

sendKey

virtual IOReturn sendKey( IOMemoryDescriptor *buffer, const DVDKeyClass keyClass, const UInt8 grantID, const DVDKeyFormat format );
Parameters
buffer

Buffer for the data transfer. The size of the buffer implies the size of the data transfer. Pass null for the kDVDKeyFormatAGID_Invalidate format case.

keyClass

As documented by MMC.

grantID

As documented by MMC.

format

As documented by MMC.

Return Value

Returns the status of the data transfer.

Discussion

Issue an MMC SEND KEY command.

setSpeed

virtual IOReturn setSpeed( UInt16 kilobytesPerSecond);
Parameters
kilobytesPerSecond

Speed to be used for data transfers, in kB/s.

kDVDSpeedMin specifies the minimum speed for all DVD media (1X). kDVDSpeedMax specifies the maximum speed supported in hardware.

Return Value

Returns the status of the operation.

Discussion

Set the speed to be used for data transfers.