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Otherwise it is possible for Application to</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="333" x="341" y="843.2231">face the problem that ALSA virtual device cannot be</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="270" x="341" y="858.356">opened after connection state is changed.</text><polygon fill="#000000" points="305.5,892.4219,295.5,896.4219,305.5,900.4219,301.5,896.4219" style="stroke: #000000; stroke-width: 1.0;"/><line style="stroke: #000000; stroke-width: 1.0;" x1="299.5" x2="1106.5" y1="896.4219" y2="896.4219"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="100" x="311.5" y="891.4888">asyncConnect()</text><polygon fill="#000000" points="61.5,921.5547,51.5,925.5547,61.5,929.5547,57.5,925.5547" style="stroke: #000000; stroke-width: 1.0;"/><line style="stroke: #000000; stroke-width: 1.0;" x1="55.5" x2="283.5" y1="925.5547" y2="925.5547"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="140" x="67.5" y="920.6216">event [asyncConnect]</text><polygon fill="#000000" points="858.5,965.6875,848.5,969.6875,858.5,973.6875,854.5,969.6875" style="stroke: #000000; stroke-width: 1.0;"/><line style="stroke: #000000; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="852.5" x2="1111.5" y1="969.6875" y2="969.6875"/><polygon fill="#000000" points="1095.5,994.6875,1105.5,998.6875,1095.5,1002.6875,1099.5,998.6875" style="stroke: #000000; stroke-width: 1.0;"/><line style="stroke: #000000; stroke-width: 1.0;" x1="294.5" x2="1101.5" y1="998.6875" y2="998.6875"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="85" x="301.5" y="993.7544">ackConnect()</text><polygon fill="#000000" points="562.5,1038.8203,552.5,1042.8203,562.5,1046.8203,558.5,1042.8203" style="stroke: #000000; stroke-width: 1.0;"/><line style="stroke: #000000; stroke-width: 1.0;" x1="556.5" x2="836.5" y1="1042.8203" y2="1042.8203"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="214" x="568.5" y="1022.8872">cbMainConnectionStateChanged(</text><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="112" x="584.5" y="1038.02">CS_SUSPENDED)</text><polygon fill="#000000" points="830.5,1078.0859,840.5,1082.0859,830.5,1086.0859,834.5,1082.0859" style="stroke: #000000; stroke-width: 1.0;"/><line style="stroke: #000000; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="546.5" x2="836.5" y1="1082.0859" y2="1082.0859"/><polygon fill="#000000" points="300.5,1092.0859,290.5,1096.0859,300.5,1100.0859,296.5,1096.0859" style="stroke: #000000; stroke-width: 1.0;"/><line style="stroke: #000000; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="294.5" x2="1111.5" y1="1096.0859" y2="1096.0859"/><!--
@startuml
hide footbox
'skinparam defaultFontSize 10
skinparam backgroundColor #EEEBDC
skinparam sequenceGroupHeaderFontSize 12
skinparam sequence {
ArrowColor black
ActorBorderColor black
LifeLineBorderColor #404040
LifeLineBackgroundColor #404040
ParticipantBorderColor black
ParticipantBackgroundColor #00FF00
ParticipantFontSize 12
ParticipantFontColor black
ActorBackgroundColor #FFFACD
ActorFontColor black
ActorFontSize 12
BoxBorderColor #deb887
BoxFontSize 12
TitleFontSize 20
}
actor Application as AP
participant SoundManager as SM
box "CommandPlugIn" #EEEBDC
participant IAmCommandSend as CS
end box
box "Audio Manager Daemon" #EEEBDC
participant IAmCommandReceiver as CR
participant AudioManager as AM
participant IAmRoutingReceive as RR
end box
box "RoutingPlugIn" #EEEBDC
participant IAmRoutingSend as RS
end box
actor "Audio Domain" as AD
AM -> CS : cbMainConnectionStateChanged(\n CS_CONNECTING)
activate AM #00FF00
activate CS #00FF00
CS -> SM : signal("MmainConnectionChanged (\n CS_CONECTING)")
activate SM #00FF00
CS - -> AM
deactivate CS
SM -> AP : event [mainConnectionChanged (\n CS_CONECTING)]
activate AP #00FF00
deactivate SM
deactivate AP
note right of RR
Audio Manager Policy decides this main
connection have to be established.
At the beginning of sequence Audio Manager
should inform cbMainConnectionStateChanged
(CS_CONNECTING) to indicated pre-information
of establishment.
end note
AM -> RS : asyncConnect()
activate RS #00FF00
RS-> AD : asyncConnect()
activate AD #00FF00
deactivate AD
RS - -> AM
deactivate RS
deactivate AM
activate AD #00FF00
AD -> AD : setAudioMode()
activate AD #00FF00
deactivate AD
AD -> RS : ackConnect()
activate RS #00FF00
deactivate AD
RS -> RR : ackConnect()
activate RR #00FF00
|||
RR -> AM
activate AM #00FF00
RR - -> RS
deactivate RR
deactivate RS
AM -> RS : asyncConnect()
activate RS #00FF00
note left of CR
Audio Manager have to know that Application
certainly start preparing sound route, and wait
proceeding until Application return feedback.
Main reason is to make sure that entire sound route
is established before connection state transite to
next phase. Otherwise it is possible for Application to
face the problem that ALSA virtual device cannot be
opened after connection state is changed.
end note
RS -> SM : asyncConnect()
activate SM #00FF00
SM -> AP : event [asyncConnect]
activate AP #00FF00
deactivate AP
RS - -> AM
deactivate RS
SM -> RS : ackConnect()
activate RS #00FF00
AM -> CS : cbMainConnectionStateChanged(\n CS_SUSPENDED)
activate CS #00FF00
|||
CS - -> AM
deactivate CS
deactivate AM
RS- ->SM
deactivate RS
deactivate SM
@enduml
PlantUML version 1.2017.16beta5(Unknown compile time)
(GPL source distribution)
Java Runtime: Java(TM) SE Runtime Environment
JVM: Java HotSpot(TM) 64-Bit Server VM
Java Version: 1.7.0_25-b15
Operating System: Linux
Default Encoding: UTF-8
Language: en
Country: US
--></g></svg>
|
