CTransInPlaceInputPin::CheckMediaType

Determines if the media type is acceptable.

HRESULT CheckMediaType(
  const CMediaType* pmt 
);

Parameters

• pmt
  Media type being checked.

Return Values

Returns an HRESULT value that depends on the implementation of the owning filter's CTransformFilter::CheckInputType member function. HRESULT can be one of the following standard constants, or other values not listed.

Remarks

This member function overrides the CTransformInputPin::CheckMediaType member function. It first calls the owning filter's CheckInputType member function. (This is a purely virtual function which must be overridden when deriving a class from the CTransformFilter class. The overridden CheckInputType member function determines which media types the input pin supports.) Then, if the filter's output pin is not connected, this member function agrees to any media type. If the output pin is connected, it asks the downstream connected input pin if it accepts this type and returns the result.

The CheckInputType member function must be overridden by the class of the owning filter.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header:

Last updated on Wednesday, April 13, 2005

© 2005 Microsoft Corporation. All rights reserved.