01org/renderer-service-upnp — pull request #30 by cguiraud (2012-09-03 12:56:22+00:00)
Title: [Device] Fix issue #22 - Player Props Change Notif

Generate an org.freedesktop.DBus.Properties.PropertiesChanged signal
each time one of following properties changes:
- PlaybackStatus, Position, Rate, CanPlay, CanSeek, CanControl, CanPause,
CanGoNext, CanGoPrevious, Metadata, Volume.

when possible, Properties changed are stacked into the same
PropertiesChanged Signal.

Add rendering context event callback for getting the "Volume" changes.

A debug log is output each time a PropertiesChanged signal is emitted.

Below, "dbus-monitor" tool command line can be used to spy emitted signal:
dbus-monitor "type='signal',interface='org.freedesktop.DBus.Properties',
member='PropertiesChanged'"

Signed-off-by: Christophe Guiraud