Export (0) Print
Expand All

IMediaObject::SetOutputType method

The SetOutputType method sets the media type on an output stream, or tests whether a media type is acceptable.

Syntax


HRESULT SetOutputType(
  DWORD dwOutputStreamIndex,
  [in]  const DMO_MEDIA_TYPE *pmt,
  DWORD dwFlags
);

Parameters

dwOutputStreamIndex

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

pmt [in]

Pointer to a DMO_MEDIA_TYPE structure that specifies the media type.

dwFlags

Bitwise combination of zero or more flags from the DMO_SET_TYPE_FLAGS enumeration.

Return value

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

Return codeDescription
DMO_E_INVALIDSTREAMINDEX

Invalid stream index

DMO_E_TYPE_NOT_ACCEPTED

Media type was not accepted

S_FALSE

Media type is not acceptable

S_OK

Media type was set successfully, or is acceptable

 

Remarks

Call this method to test, set, or clear the media type on an output stream:

  • To test the media type without setting it, use the DMO_SET_TYPEF_TEST_ONLY flag. If the media type is not acceptable, the method returns S_FALSE.
  • To set the media type, set dwFlags to zero. If the media type is not acceptable, the method returns DMO_E_TYPE_NOT_ACCEPTED.
  • To clear the current media type (if any), use the DMO_SET_TYPEF_CLEAR flag and set pmt to NULL. When the method returns, the stream no longer has a media type. The DMO cannot process samples until the application sets a new media type, unless the stream is optional.

The media types that are currently set on other streams can affect whether the media type is acceptable.

Requirements

Header

Mediaobj.h (include Dmo.h)

Library

Dmoguids.lib

See also

IMediaObject Interface

 

 

Community Additions

ADD
Show:
© 2014 Microsoft