Multimedia Streaming Component Objects

This article provides a table that describes the various components that Microsoft® DirectShow™ supports. These objects support the multimedia streaming interfaces. This article also includes a diagram that shows the hierarchy of component objects.

Contents of this article:

• Component Objects Table
• Object References Diagram

Component Objects Table

This section describes the various components that are supported by DirectShow.

Object		Description		Interfaces supported
CLSID_AMMultiMediaStream		DirectShow implementation of multimedia stream.		IAMMultiMediaStream, IMultiMediaStream
CLSID_MediaStreamFilter		Provides multimedia streaming functionality for the CLSID_AMMultiMediaStream object through the IAMMultiMediaStream interface.		IBaseFilter
CLSID_AMDirectDrawStream		DirectDraw® media stream that can be added to a DirectShow multimedia stream.		IAMMediaStream, IMediaStream, IDirectDrawMediaStream, IPin, IMemInputPin
Samples created by the DirectDraw stream.				IStreamSample, IDirectDrawStreamSample, IMediaSample
CLSID_ AMMediaTypeStream		Can create media samples for any DirectShow-supported data type		IAMMediaStream, IMediaStream, IPin, IMemInputPin
Samples created by the CLSID_ AMMediaTypeStream object				IStreamSample, IMediaSample, IMediaSample2
CLSID_AMAudioData		Implementation of IAudioData audio container object		IAudioData

Object References Diagram

The hierarchy of objects creates some interesting circular references between the DirectShow objects. The following diagram shows all the objects and their references. Strong references (those that increment the referenced object) are indicated by solid lines. Weak references (those that do not AddRef the referenced object) are indicated by a dotted line.

Samples hold strong references to the multimedia stream object, while the media streams do not.

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