Sequence Diagram For Loading a DVB stream (Error on tslock) for http://www.websequencediagrams.com/

SequenceDiagramForLoadingADVBStreamErrorOnTslock.wsd

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# Error on tslock or in URL
title Sequence Diagram For Loading a DVB stream (Error on tslock)
 
participant "Higher Layer (HTML page, JS)" as HigherLayer
participant "HTMLMediaElement" as MediaPlayer
participant "Video pipeline(Tuner, Demod, Demux, Decoder)" as VideoPipeline
 
 
note right of MediaPlayer
networkState: NETWORK_EMPTY
readyState: HAVE_NOTHING
end note
 
HigherLayer->MediaPlayer: load()
 
note right of MediaPlayer
networkState: NETWORK_NO_SOURCE
end note
 
note right of MediaPlayer
networkState: NETWORK_LOADING
end note
 
MediaPlayer->HigherLayer: loadstart
 
 
MediaPlayer->VideoPipeline: Lock to the frequency specified in the DVB url.
 
MediaPlayer-->HigherLayer: progress
 
note right of VideoPipeline
1. Tuner tries tslock to the given frequency. Tuner could not lock to the frequency \nbecause there was no aerial or the signal was low, or
2. An error in URL.
end note
 
VideoPipeline->MediaPlayer: Error on tslock or in URL. Warning sent by Irisplayer.
 
note right of MediaPlayer
error: MEDIA_ERR_SRC_NOT_SUPPORTED
end note
 
note right of MediaPlayer
networkState: NETWORK_NO_SOURCE
end note
 
note right of MediaPlayer
On Webkit the errors are included in the networkState.
networkState: NetworkError
end note
 
MediaPlayer->HigherLayer: error
 
note right of MediaPlayer
Abort the load. Until the load method is invoked or the URL is changed, nothing else happens.
end note

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