Muokkaa

Jaa

CTransInPlaceOutputPin.EnumMediaTypes method

  • Artikkeli

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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