- make sure there is only one screen sharing in a meeting.

bbb-screenshare/app/jws/lib/javacv-screenshare-0.0.1.jar

...ebutton/app/screenshare/server/sessions/Screenshare.scala

...gbluebutton/app/screenshare/server/sessions/Session.scala

...org/bigbluebutton/screenshare/client/DeskshareClient.java

.../bigbluebutton/screenshare/client/ScreenRegionSharer.java

...uebutton/screenshare/client/frame/CaptureRegionFrame.java

...utton/screenshare/client/net/NetworkHttpStreamSender.java

...es/screenshare/view/components/ScreenshareViewWindow.mxml