IMediaObject::GetOutputCurrentType method

  • Artículo
  • Tiempo de lectura: 2 minutos

The GetOutputCurrentType method retrieves the media type that was set for an output stream, if any.

Syntax

HRESULT GetOutputCurrentType(
  DWORD          dwOutputStreamIndex,
  DMO_MEDIA_TYPE *pmt
);

Parameters

dwOutputStreamIndex

Zero-based index of an output stream on the DMO.

pmt

Pointer to a DMO_MEDIA_TYPE structure allocated by the caller. The method fills the structure with the media type.

Return value

Returns an HRESULT value. Possible values include those in the following table.

Return code Description
DMO_E_INVALIDSTREAMINDEX
 Invalid stream index.
DMO_E_TYPE_NOT_SET
 Media type was not set.
E_OUTOFMEMORY
 Insufficient memory.
S_OK
 Success.

Remarks

The caller must set the media type for the stream before calling this method. To set the media type, call the IMediaObject::SetOutputType method.

If the method succeeds, call MoFreeMediaType to free the format block.

Requirements

   
Target Platform Windows
Header mediaobj.h (include Dmo.h)
Library Dmoguids.lib

See also

IMediaObject Interface