ctransinplaceoutputpin-enummediatypes.md

description	ms.assetid	title	ms.topic	ms.date	topic_type	api_name	api_type	api_location	ms.custom
CTransInPlaceOutputPin.EnumMediaTypes method - The EnumMediaTypes method enumerates the pin's preferred media types. This method implements the IPin::EnumMediaTypes method.	942c6594-3053-484a-a0f7-286dcd3f7550	CTransInPlaceOutputPin.EnumMediaTypes method (Transip.h)	reference	4/26/2023	APIRef kbSyntax	CTransInPlaceOutputPin.EnumMediaTypes	COM	Strmbase.lib Strmbase.dll Strmbasd.lib Strmbasd.dll	UpdateFrequency5

CTransInPlaceOutputPin.EnumMediaTypes method

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 filter's input pin is not connected.

Remarks

This method returns the IEnumMediaTypes interface from the upstream output pin.

Requirements

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

See also

CTransInPlaceOutputPin Class