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IMediaObject::GetInputCurrentType

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Microsoft DirectShow 9.0

IMediaObject::GetInputCurrentType

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

Syntax

  HRESULT GetInputCurrentType(
    DWORD dwInputStreamIndex,
    DMO_MEDIA_TYPE* pmt
);

Parameters

dwInputStreamIndex

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

pmt

[out] 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::SetInputType method.

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

Requirements

  Header: Declared in Mediaobj.h; include Dmo.h
  Library: Dmoguids.lib.

See Also