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AMCOPPCommand structure (strmif.h)

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The AMCOPPCommand structure contains a Certified Output Protection Protocol (COPP) command.

Syntax

typedef struct _AMCOPPCommand {
  GUID  macKDI;
  GUID  guidCommandID;
  DWORD dwSequence;
  DWORD cbSizeData;
  BYTE  CommandData[4056];
} AMCOPPCommand, *LPAMCOPPCommand;

Members

macKDI

Message Authentication Code (MAC) of the command data. Use AES-based one-key CBC MAC (OMAC) to calculate this value.

guidCommandID

GUID that specifies the command.

dwSequence

Sequence number. The application must keep a running count of the COPP commands issued. For each command, increment the sequence number by one.

cbSizeData

Number of bytes of valid data in the CommandData member.

CommandData[4056]

Data for the command. The meaning of the data depends on the command.

Remarks

The following COPP commands are defined.

GUID Description
DXVA_COPPSetProtectionLevel Sets a specified protection type to a specified protection level.
 

For more information, see the Windows DDK documentation.

Requirements

Requirement Value
Header strmif.h (include Dshow.h)

See also

DirectShow Structures

Using Certified Output Protection Protocol (COPP)