3.2.5.1 TSMM_PRESENTATION_REQUEST Message Processing

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The processing of this message depends on the Command field of the message and the current presentation state.

If the Command field is set to 0x01 (Presentation Start) and the presentation state is Uninitialized, the client SHOULD attempt to initialize any decoders or renderers necessary for playback of the video stream. After these are initialized, the client SHOULD send a TSMM_PRESENTATION_RESPONSE message to the server and set the current state to Streaming. If the presentation state is not Uninitialized, the client SHOULD ignore this message.

If the Command field is set to 0x02 (Presentation Stop) and the presentation state is Streaming, the client SHOULD terminate any objects relating to the presentation corresponding to the presentation ID in the message and set the current state to Uninitialized. If the presentation state is Uninitialized, the client SHOULD ignore this message.