IMediaObject::SetOutputType (Compact 2013)

3/26/2014

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

Syntax

HRESULT SetOutputType(
  DWORD dwOutputStreamIndex,
  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 the following.

Value	Description
S_OK	Success
S_FALSE	Media type is not acceptable
DMO_E_INVALIDSTREAMINDEX	Invalid stream index
DMO_E_TYPE_NOT_ACCEPTED	Media type was not accepted

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	dmo.h
Library	Dmoguid.lib

See Also

Reference

IMediaObject
MoFreeMediaType
DMO Error Codes
DMO Error Codes
DMO_MEDIA_TYPE
DMO_SET_TYPE_FLAGS