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IEnumMediaTypes interface (strmif.h)

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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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 IEnumMediaTypes interface enumerates a pin's preferred media types. To obtain this interface, call the IPin::EnumMediaTypes method on the pin. Filters use this interface when they connect to other filters. Applications can also use it to examine a pin's preferred media types. For more information, see Enumerating Objects in a Filter Graph.

This interface implements a standard Component Object Model (COM) collection object.

If a pin's set of preferred media types changes, some methods on this interface return VFW_E_ENUM_OUT_OF_SYNC. Call the IEnumMediaTypes::Reset method to resynchronize the enumerator.

Inheritance

The IEnumMediaTypes interface inherits from the IUnknown interface. IEnumMediaTypes also has these types of members:

Methods

The IEnumMediaTypes interface has these methods.

 
IEnumMediaTypes::Clone

The Clone method makes a copy of the enumerator. The returned object starts with the same enumeration state as the original.
IEnumMediaTypes::Next

The Next method retrieves a specified number of media types.
IEnumMediaTypes::Reset

The Reset method resets the enumeration sequence to the beginning. (IEnumMediaTypes.Reset)
IEnumMediaTypes::Skip

The Skip method skips over a specified number of media types.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Target Platform Windows
Header strmif.h (include Dshow.h)

See also

Enumerating Media Types

Interfaces