[Bug 748577] New: pulsesink doesn't notify about volume changes in paused state or after connecting to pulseaudio

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=748577

            Bug ID: 748577
           Summary: pulsesink doesn't notify about volume changes in
                    paused state or after connecting to pulseaudio
    Classification: Platform
           Product: GStreamer
           Version: 1.4.4
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: reiter.christoph at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Due to flat-volumes I'm exposing the pulsesink volume property in the UI now
and noticed some problems:

1) When the pulsesink is created it returns 1.0 for volume and after going to
paused it returns the actual volume assigned by PA. notify::volume never gets
fired in between.

2) When in playing state, changing the volume in the gnome sound preferences or
pavucontrol, pulsesink fires notify::volume. In the paused state it never fires
notify::volume but the volume values changes.

I've currently worked this around my polling pulsesink in case of state change
messages on the bus and when the user interacts with the volume widget. It
would be nice if pulsesink would notify in all cases where volume potentially
changes.

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