@startuml

hide footbox

participant Detector
participant MainWindow
participant SHM
participant jt9.f90
participant decoder.f90
participant ft8_decode.f90

Detector -> MainWindow : dataSink()

activate MainWindow
MainWindow -> MainWindow : decode()
MainWindow -> MainWindow : decodeBusy()

MainWindow -> SHM : memcpy()
MainWindow -> jt9.f90 : doorbell
deactivate MainWindow

activate jt9.f90
jt9.f90 -> decoder.f90 : multimode_decoder()

decoder.f90 -> ft8_decode.f90 : decode()
ft8_decode.f90 -> decoder.f90 : ft8_decoded()
decoder.f90 -> jt9.f90

jt9.f90 -> MainWindow : readFromStdout()

@enduml