IMFContentDecryptionModuleSessionCallbacks::KeyMessage method (mfcontentdecryptionmodule.h)

Called when the Content Decryption Module (CDM) has generated a message for the session.

Syntax

HRESULT KeyMessage(
  MF_MEDIAKEYSESSION_MESSAGETYPE messageType,
  const BYTE                     *message,
  DWORD                          messageSize,
  LPCWSTR                        destinationURL
);

Parameters

messageType

A value from the MF_MEDIAKEYSESSION_MESSAGETYPE enumeration specifying the type of the message.

message

A pointer to a BYTE array containing the message contents. Messages are Key System-specific.

messageSize

The size of the array in the message parameter.

destinationURL

A optional parameter containing the destination URL.

Return value

Returns an HRESULT.

Remarks

KeyMessage is based on the Encrypted Media Extension specification's MediaKeyMessageEvent.

Requirements

Requirement	Value
Minimum supported client	Windows 10, version 2004 (10.0; Build 19041)
Minimum supported server	Windows Server, version 2004 (10.0; Build 19041)
Header	mfcontentdecryptionmodule.h