Sequence Diagram For Loading a Video File From Disk (Error decoding data) for http://www.websequencediagrams.com/

SequenceDiagramForLoadingAVideoFileFromDiskErrorDecodingData.wsd

# Error decoding data
title Sequence Diagram For Loading a Video File From Disk (Error decoding data)
 
participant "Higher Layer (HTML page, JS)" as HigherLayer
participant "Media Player (Webkit {HTMLMediaElement, MediaPlayer, MediaPlayerPrivate}, Irisplayer)" as MediaPlayer
participant "Video pipeline(Local Disk, Demux, Decoder)" as VideoPipeline
 
HigherLayer->MediaPlayer: load()
 
note right of MediaPlayer
networkState: NETWORK_EMPTY
readyState: HAVE_NOTHING
end note
 
 
note right of MediaPlayer
networkState: NETWORK_NO_SOURCE
end note
 
MediaPlayer->VideoPipeline: Can you fetch the media data from the remote server?
 
note right of MediaPlayer
networkState: NETWORK_LOADING
end note
 
MediaPlayer->HigherLayer: loadstart
 
MediaPlayer->HigherLayer: progress
 
note right of VideoPipeline
1. Media Player reads successfuly the file from the hard disk.
2. Some media data has been read.
3. Error decoding data.
end note
 
VideoPipeline->MediaPlayer: Error decoding data.
 
note right of MediaPlayer
error: MEDIA_ERR_DECODE
end note
 
MediaPlayer->HigherLayer: error
 
 
alt readyState: HAVE_NOTHING
 
    note right of MediaPlayer
    networkState: NETWORK_EMPTY
    end note
 
    MediaPlayer->HigherLayer: emptied
 
else readyState > HAVE_NOTHING
 
    note right of MediaPlayer
    networkState: NETWORK_IDLE
    end note
    
end