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My car is a bluetooth device. I can pair my phone with the car, and then
playing music on the phone will use the car as a bluetooth headset and
play the music through the car's speakers. The car can also display the
name of the playing music on its screen (passed over Bluetooth) and skip
to next and previous song via buttons on the steering wheel (with the
next/previous command passed over Bluetooth).

An Ubuntu phone has the ability to play songs, including from web
applications. At the moment, some music playing apps on Ubuntu can
respond to a Bluetooth next/previous command from a paired Bluetooth
headset. However, perhaps the Sound Menu could take control of all
Bluetooth pairings. That way, all Bluetooth headset next/previous
commands would be passed to the Sound Menu, and the Sound Menu would
take care of passing those next/previous commands to the currently
playing app; similarly, the Sound Menu knows the name of the currently
playing song and could pass that information back over Bluetooth to the
headset/car and then the car can display the name. If the Sound Menu
handled this, then a music playing app on Ubuntu would merely need to
integrate itself with the Sound Menu and would have Bluetooth headset
support without any work in the app at all. This would also work with
web apps (for example, Grooveshark's HTML5 app) which have Sound Menu
integration, meaning that an Ubuntu phone would be able to use
Grooveshark's HTML5 app and control it from a Bluetooth device while
displaying the name of the playing song on that Bluetooth device,
something no other platform can do.

Note that this is useful beyond Bluetooth: other consumers of the
currently-playing metadata or music control will find this useful. A
phone welcome screen which shows the currently playing track and album
art would automatically work if it talked to the Sound Menu. Media keys
could be handled by the Sound Menu rather than every app individually.

This may not be specifically a Sound Menu issue; probably most of the
pieces to make this work in various places (the bluetooth stack, the
sound menu, mpris) are in place, but it would be good if the feature
were tested from end to end to ensure that all the pieces fit together
and the feature worked.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: indicator-sound 12.10.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic x86_64
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
CheckboxSubmission: 4d186c1dd89d3ba4cb89f5ee55713686
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
Date: Tue Jan 15 11:03:39 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2011-12-11 (401 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111211)
MarkForUpload: True
SourcePackage: indicator-sound
UpgradeStatus: Upgraded to quantal on 2012-10-20 (87 days ago)

** Affects: indicator-sound (Ubuntu)
     Importance: Wishlist
         Status: Confirmed


** Tags: amd64 apport-bug quantal running-unity
-- 
Bluetooth devices are not able to control and display playing music from apps and web apps consistently
https://bugs.launchpad.net/bugs/1099972
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