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CTransInPlaceInputPin::CheckMediaType

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Windows Embedded CE 6.0 R3

4/8/2010

Determines if the media type is acceptable.

Syntax

HRESULT CheckMediaType(
  const CMediaType* pmt 
);

Parameters

  • pmt
    Media type being checked.

Return Value

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.

Value Description

E_FAIL

Failure.

E_POINTER

Null pointer argument.

E_INVALIDARG

Invalid argument.

E_NOTIMPL

Method is not supported.

S_OK or NOERROR

Success.

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 that must be overridden when deriving a class from the CTransformFilter class. The overridden CheckInputType member function determines which media types the input pin supports.

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

Windows Embedded CE Windows CE 2.12 and later
Note Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements
For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later