Media Type Functions (Compact 2013)

3/26/2014

The Mtype.h header file in the DirectShow base classes provides helper functions for handling media types.

These general-purpose functions create, copy and delete a task-allocated AM_MEDIA_TYPE structure.

This is useful when using the IEnumMediaTypes interface, because the implementation allocates the structures that must be deleted later.

The functions are paired as follows:

• CreateMediaType is the opposite of DeleteMediaType.

• FreeMediaType is the opposite of CopyMediaType.

  Programming element	Description
  AreEqualVideoTypes	Compares the format, height, and width of two video sources.
  CopyMediaType	Copies a task-allocated AM_MEDIA_TYPE structure.
  CreateAudioMediaType	Initializes a media type structure given a wave format structure.
  CreateMediaType	Allocates and initializes an AM_MEDIA_TYPE structure.
  DeleteMediaType	Deletes a task-allocated AM_MEDIA_TYPE structure.
  FreeMediaType	Frees a task-allocated AM_MEDIA_TYPE structure from memory.

See Also

Reference

Utility Functions