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CTransInPlaceInputPin.EnumMediaTypes method

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The EnumMediaTypes method enumerates the pin's preferred media types. This method implements the IPin::EnumMediaTypes method.

Syntax

HRESULT EnumMediaTypes(
   IEnumMediaTypes **ppEnum
);

Parameters

ppEnum

Receives a pointer to the IEnumMediaTypes interface.

Return value

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

Return code Description
S_OK
 Success.
E_OUTOFMEMORY
 Insufficient memory.
E_POINTER
 NULL pointer.
VFW_E_NOT_CONNECTED
 The output pin is not connected.

Remarks

This method returns the IEnumMediaTypes interface from downstream input pin.

Requirements

Requirement Value
Header
Transip.h (include Streams.h)
Library
Strmbase.lib (retail builds);
Strmbasd.lib (debug builds)

See also

CTransInPlaceInputPin Class