OPM_GET_VIRTUAL_PROTECTION_LEVEL
Returns the virtual protection level for a specified protection mechanism.
The virtual protection level is the level requested by the application during the current Output Protection Manager (OPM) session. The driver might apply a higher level, due to events outside of this OPM session. To find the actual protection level that is in effect, send the OPM_GET_ACTUAL_PROTECTION_LEVEL query.
| Requirement | Value |
|---|---|
| Request GUID | OPM_GET_VIRTUAL_PROTECTION_LEVEL |
| Input data | The protection mechanism to query, specified as a 32-bit integer. The value is interpreted as a member of the OPM Protection Type Flags. |
| Return data | An OPM_STANDARD_INFORMATION structure |
Remarks
The protection level is returned in the ulInformation member of the OPM_STANDARD_INFORMATION structure. The meaning of this value depends on the protection mechanism that is queried. For each protection mechanism, the value of ulInformation is a flag from a different enumeration, as shown in the following table.
| Protection mechanism | Enumeration |
|---|---|
| ACP | OPM_ACP_PROTECTION_LEVEL |
| CGMS-A | CGMS-A Protection Flags |
| DPCP | OPM_DPCP_PROTECTION_LEVEL |
| HDCP | OPM_HDCP_PROTECTION_LEVEL |
This query is equivalent to the DXVA_COPPQueryLocalProtectionLevel query used in Certified Output Protection Protocol (COPP).
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2008 [desktop apps only] |
| Header |
|
See also