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4/8/2010
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_TYPEstructure.
This is useful when using the IEnumMediaTypesinterface, because the implementation allocates the structures that must be deleted later.
The functions are paired as follows:
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CreateMediaTypeis the opposite of
DeleteMediaType.
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FreeMediaTypeis the opposite of
CopyMediaType.
Programming element Description Compares the format, height, and width of two video sources.
Copies a task-allocated AM_MEDIA_TYPEstructure.
Initializes a media type structure given a wave format structure.
Allocates and initializes an AM_MEDIA_TYPEstructure.
Deletes a task-allocated AM_MEDIA_TYPEstructure.
Frees a task-allocated AM_MEDIA_TYPEstructure from memory.