COPP and Display Modes

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This section applies only to Windows Server 2003 SP1 and later, and Windows XP SP2 and later.

The video miniport driver should report all the protection types that are supported on the physical connector associated with the DirectX VA COPP device, regardless of the display mode currently being used. The video miniport driver reports supported protection types when it receives a call to its COPPQueryStatus function with the DXVA_COPPQueryProtectionType set in the guidStatusRequestID member of the DXVA_COPPStatusInput structure. For more information, see COPP Status.

If the current resolution is too high for a particular protection type, then when the video miniport driver's COPPCommand function is called to set the protection level for that protection type, the driver should return an error. The following scenarios give examples of when the driver's COPPCommand function should return success or an error:

  • If the DirectX VA COPP device is associated with an S-Video output connector, a call to the video miniport driver's COPPQueryStatus function with DXVA_COPPQueryProtectionType set should indicate support of the analog content protection (ACP) type (COPP_ProtectionType_ACP). Thereafter, if the driver's COPPCommand function is called to set a level for the ACP type on this connector, the driver should return success because the output resolution of S-Video is fixed, even though desktop resolution (display mode) might be higher.

  • If the DirectX VA COPP device is associated with component output connectors, a call to the video miniport driver's COPPQueryStatus function with DXVA_COPPQueryProtectionType set should also indicate support of the ACP type. However, if the driver's COPPCommand function is called to set a level for the ACP type on this output when the display resolution is 720p or 1080i, the driver should return the DDERR_TOOBIGSIZE error code because the resolution is too high to set the protection level for the ACP type on component output connectors.