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CDROM_PERFORMANCE_REQUEST_TYPE enumeration (ntddcdrm.h)

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The CDROM_PERFORMANCE_REQUEST_TYPE enumeration defines the types of performance data requests. It is a member of the CDROM_PERFORMANCE_REQUEST structure, which is used as an input parameter to the IOCTL_CDROM_GET_PERFORMANCE I/O control request.

Syntax

typedef enum _CDROM_PERFORMANCE_REQUEST_TYPE {
  CdromPerformanceRequest,
  CdromWriteSpeedRequest
} CDROM_PERFORMANCE_REQUEST_TYPE, *PCDROM_PERFORMANCE_REQUEST_TYPE;

Constants

 
CdromPerformanceRequest
Requests streaming performance data.
CdromWriteSpeedRequest
Requests the write speed descriptor.

Requirements

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

See also

CDROM_PERFORMANCE_REQUEST

IOCTL_CDROM_GET_PERFORMANCE