// ntddcdvd.h

typedef struct DVD_READ_STRUCTURE {
  LARGE_INTEGER        BlockByteOffset;
  DVD_STRUCTURE_FORMAT Format;
  DVD_SESSION_ID       SessionId;
  UCHAR                LayerNumber;
} DVD_READ_STRUCTURE, *PDVD_READ_STRUCTURE;
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Windows Driver Kit DDI reference (ns-ntddcdvd-dvd_read_structure)

DVD_READ_STRUCTURE structure

Description

The DVD_READ_STRUCTURE structure is used in conjunction with the IOCTL_DVD_READ_STRUCTURE request to retrieve a DVD descriptor containing information about a DVD disc.

Members

`BlockByteOffset`

Contains an offset to the logical block address of the descriptor to be retrieved.

`Format`

Indicates the type of DVD descriptor to retrieve. See the DVD_STRUCTURE_FORMAT enumeration type for further information about the values that can be assigned to this member.

`SessionId`

Contains the DVD session ID.

`LayerNumber`

Contains the number of the layer where the descriptor is to be retrieved.

Remarks

The DVD_READ_STRUCTURE structure contains data such as copyright information, or manufacturer-specific information.

DVD_READ_STRUCTURE - NtDoc