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[Bug 1485522] Re: Volume obtained is 100% in multimedia sink for sounds from app


@timo think we can pass this by the folks at Qt?

** Also affects: qtbase-opensource-src (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: canonical-devices-system-image
     Assignee: John McAleely (john.mcaleely) => Pat McGowan (pat-mcgowan)

** Changed in: qtbase-opensource-src (Ubuntu)
     Assignee: (unassigned) => Timo Jyrinki (timo-jyrinki)

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  Volume obtained is 100% in multimedia sink for sounds from app

Status in Canonical System Image:
Status in pulseaudio package in Ubuntu:
Status in qtbase-opensource-src package in Ubuntu:
Status in qtubuntu package in Ubuntu:

Bug description:
  I'm not sure 100% this is a bug but it is related to

  When the "Marron in trouble" games launches a sound the multimedia
  sink it's updated and when reading the volume it's always 100%.

  I'ts not 100% for other applications using the multimedia role, like
  the music app or other games/apps. The volume in that case is in sync
  with the volume that was previously set for it.

  This is the code from the indicator-sound where we get the 100%

  var props_variant = yield _pconn.call ("org.PulseAudio.Ext.StreamRestore1.RestoreEntry",
  						sink_input_objp, "org.freedesktop.DBus.Properties", "Get",
  						new Variant ("(ss)", "org.PulseAudio.Ext.StreamRestore1.RestoreEntry", "Volume"),
  						null, DBusCallFlags.NONE, -1);
  				Variant tmp;
  				props_variant.get ("(v)", out tmp);
  				uint32 type = 0, volume = 0;
  				VariantIter iter = tmp.iterator ();
  				iter.next ("(uu)", &type, &volume);

  I did a workaround branch in the indicator-sound that reads the volume
  at initilaization for every role and stores any change When the sink
  is updated I read the volume in it that is already stored instead of
  reading the volume from pulse.

  I'm not convinced of that, and would like to know why I get 100%
  volume only for this particular game.

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