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CodecAPIEventData structure (strmif.h)

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[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 CodecAPIEventData structure contains event data for the EC_CODECAPI_EVENT event. This event is sent by codecs that support the ICodecAPI interface.

Syntax

struct CodecAPIEventData {
  GUID  guid;
  DWORD dataLength;
  DWORD reserved[3];
};

Members

guid

A GUID that identifies the codec event.

dataLength

The length of the additional data that follows this structure, in bytes. The value can be zero.

reserved[3]

Reserved; do not use.

Remarks

This structure may be followed by addition data, depending on the codec event. For more information, see ICodecAPI::RegisterForEvent.

Requirements

Requirement Value
Minimum supported client Windows XP with SP2 [desktop apps | UWP apps]
Minimum supported server Windows Server 2003 R2 [desktop apps | UWP apps]
Header strmif.h (include Dshow.h)

See also

DirectShow Structures

ICodecAPI::RegisterForEvent