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DXGKMDT_OPM_COPP_COMPATIBLE_GET_INFO_PARAMETERS structure

The DXGKMDT_OPM_COPP_COMPATIBLE_GET_INFO_PARAMETERS structure contains parameters that are used to retrieve information from a protected output object in a call to the DxgkDdiOPMGetCOPPCompatibleInformation function.

Syntax


typedef struct _DXGKMDT_OPM_COPP_COMPATIBLE_GET_INFO_PARAMETERS {
  DXGKMDT_OPM_RANDOM_NUMBER rnRandomNumber;
  GUID                      guidInformation;
  ULONG                     ulSequenceNumber;
  ULONG                     cbParametersSize;
  BYTE                      abParameters[DXGKMDT_OPM_GET_INFORMATION_PARAMETERS_SIZE];
} DXGKMDT_OPM_COPP_COMPATIBLE_GET_INFO_PARAMETERS, *PDXGKMDT_OPM_COPP_COMPATIBLE_GET_INFO_PARAMETERS;

Members

rnRandomNumber

A DXGKMDT_OPM_RANDOM_NUMBER structure that contains a protected output object's 128-bit cryptographically secure random number. This random number is generated by an application and supplied to the display miniport driver in rnRandomNumber in a call to the driver's DxgkDdiOPMGetCOPPCompatibleInformation function.

guidInformation

The GUID that is used to retrieve the information. guidInformation can be set to one of the following GUIDs:

  • DXGKMDT_OPM_GET_CONNECTED_HDCP_DEVICE_INFORMATION

  • DXGKMDT_OPM_GET_CONNECTOR_TYPE

  • DXGKMDT_OPM_GET_SUPPORTED_PROTECTION_TYPES

  • DXGKMDT_OPM_GET_VIRTUAL_PROTECTION_LEVEL

  • DXGKMDT_OPM_GET_ACTUAL_PROTECTION_LEVEL

  • DXGKMDT_OPM_GET_ACTUAL_OUTPUT_FORMAT

  • DXGKMDT_OPM_GET_ADAPTER_BUS_TYPE

  • DXGKMDT_OPM_GET_ACP_AND_CGMSA_SIGNALING

ulSequenceNumber

A sequence number. For the DxgkDdiOPMGetCOPPCompatibleInformation function to process an information request, the value in ulSequenceNumber must match the current 4-byte sequence number that the display miniport driver stores. If a match is not detected, DxgkDdiOPMGetCOPPCompatibleInformation returns an error code. If a match is detected, DxgkDdiOPMGetCOPPCompatibleInformation increments the stored sequence number before returning. The initial 4-byte sequence number was part of the 256-byte array that the EncryptedParameters parameter of the DxgkDdiOPMSetSigningKeyAndSequenceNumbers function pointed to.

cbParametersSize

The size, in bytes, of the valid data that the abParameters member points to.

abParameters

A 4056-byte array that contains the data that accompanies the information request that is identified by the guidInformation member.

No data is required for the DXGKMDT_OPM_GET_CONNECTOR_TYPE, DXGKMDT_OPM_GET_SUPPORTED_PROTECTION_TYPES, DXGKMDT_OPM_GET_ACTUAL_OUTPUT_FORMAT, DXGKMDT_OPM_GET_CONNECTED_HDCP_DEVICE_INFORMATION, DXGKMDT_OPM_GET_ADAPTER_BUS_TYPE, and DXGKMDT_OPM_GET_ACP_AND_CGMSA_SIGNALING requests.

The DXGKMDT_OPM_GET_ACTUAL_PROTECTION_LEVEL and DXGKMDT_OPM_GET_VIRTUAL_PROTECTION_LEVEL requests require data that identifies the protection type that the protection level is requested for. Therefore, these requests require that the first 4 bytes in the abParameters array contain the protection type.

Requirements

Version

Available in Windows Vista and later versions of the Windows operating systems.

Header

D3dkmdt.h (include D3dkmdt.h)

See also

DxgkDdiOPMGetCOPPCompatibleInformation
DXGKMDT_OPM_RANDOM_NUMBER

 

 

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