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FEATURE_DATA_CD_TRACK_AT_ONCE structure (ntddmmc.h)

  • Article

The FEATURE_DATA_CD_TRACK_AT_ONCE structure holds information about the CD Track at Once feature.

Syntax

typedef struct _FEATURE_DATA_CD_TRACK_AT_ONCE {
  FEATURE_HEADER Header;
  UCHAR          RWSubchannelsRecordable : 1;
  UCHAR          CdRewritable : 1;
  UCHAR          TestWriteOk : 1;
  UCHAR          RWSubchannelPackedOk : 1;
  UCHAR          RWSubchannelRawOk : 1;
  UCHAR          Reserved1 : 1;
  UCHAR          BufferUnderrunFree : 1;
  UCHAR          Reserved3 : 1;
  UCHAR          Reserved2;
  UCHAR          DataTypeSupported[2];
} FEATURE_DATA_CD_TRACK_AT_ONCE, *PFEATURE_DATA_CD_TRACK_AT_ONCE;

Members

Header

Contains a FEATURE_HEADER structure with header information for this feature descriptor.

RWSubchannelsRecordable

Indicates, when set to 1, that the device can record the read/write subchannels with user-supplied data.

CdRewritable

Indicates, when set to 1, that the device supports overwriting a Track-at-Once track with another track's information.

TestWriteOk

Indicates, when set to 1, that the device can perform test writes.

RWSubchannelPackedOk

Indicates, when set to 1, that the device supports writing R-W sub code in the packed mode.

RWSubchannelRawOk

Indicates, when set to 1, that the device supports writing R-W sub code in the raw mode.

Reserved1

Reserved.

BufferUnderrunFree

Indicates, when set to 1, that the device is capable of zero-loss linking.

Reserved3

Reserved.

Reserved2

Reserved.

DataTypeSupported[2]

Indicates the data types that the device supports. See the SCSI Multimedia 3 (MMC-3) specification for a description of the values that this member can take. DataTypeSupported[0] holds the most significant byte of value that indicates the data types. DataTypeSupported[1] holds the least significant byte of that value.

Remarks

This structure holds data for the feature named "CD Track at Once" by the MMC-3 specification. Devices that support this feature can write data to a CD track.

Requirements

Requirement Value
Header ntddmmc.h (include Ntddcdrm.h)

See also

FEATURE_HEADER

FEATURE_NUMBER