LPDXVA_COPPCommand - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// dxva.h
typedef struct _DXVA_COPPCommand {
GUID macKDI;
GUID guidCommandID;
ULONG dwSequence;
ULONG cbSizeData;
UCHAR CommandData[4056];
} DXVA_COPPCommand, *LPDXVA_COPPCommand;
View the official Windows Driver Kit DDI referenceNo description available.
The DXVA_COPPCommand structure describes a command sent to a protected video session that is associated with a COPP DirectX VA device.
macKDISpecifies a message authentication code (MAC) GUID for the command at CommandData. The display driver can use the MAC to verify that the transmission of the command was secure (that is, it was not tampered with in transit to the driver).
guidCommandIDSpecifies the GUID that identifies the command. The following GUIDs are supported:
Sets the protection type and level on the physical connector associated with the COPP device.
The DXVA_COPPSetProtectionLevel GUID is defined as follows:
DEFINE_GUID(DXVA_COPPSetProtectionLevel,
0x9bb9327c,0x4eb5,0x4727,0x9f,0x00,0xb4,0x2b,0x09,0x19,0xc0,0xda);
An instruction about how to protect the signal that goes through the physical connector associated with the DirectX VA COPP device.
The DXVA_COPPSetSignaling GUID is defined as follows:
DEFINE_GUID(DXVA_COPPSetSignaling,
0x9a631a5,0xd684,0x4c60,0x8e,0x4d,0xd3,0xbb,0xf,0xb,0xe3,0xee);
dwSequenceSpecifies a sequence number. For the COPPCommand function to process the command, the value in dwSequence must match the 32-bit random starting status sequence number that was passed in the DXVA_COPPSignature structure to the COPPSequenceStart function.
cbSizeDataSpecifies the size, in bytes, of the command data at CommandData.
CommandDataSpecifies an array that comprises the command data.
For a DXVA_COPPSetProtectionLevel command, the protection information is supplied in the first 16 bytes of the CommandData array (the protection type in the first 4 bytes, the protection level in the next 4 bytes, and possibly some extended information in the last 8 bytes). In the call to the COPPCommand function, the CommandData array should be cast to a pointer to a DXVA_COPPSetProtectionLevelCmdData structure, which contains protection type, protection level, and extended information members.
For a DXVA_COPPSetSignaling command, the signaling information is supplied by casting the CommandData array to a pointer to a DXVA_COPPSetSignalingCmdData structure.
DXVA_COPPSetProtectionLevelCmdData