[mediahub3] external_output_state().changed() signal never called for headphone jack plug/unplug events

[Jim Hodapp]

current build number: 240
device name: krillin
channel: ubuntu-touch/ubuntu-rtm/14.09-proposed
last update: 2015-02-19 14:56:04
version version: 240
version ubuntu: 20150218.1
version device: 20150216-fe747ac
version custom: 20150216-561-29-186

media-hub-3 from https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu-rtm/landing-002:
ii libmedia-hub-client3:armhf 3.0.0+15.04.20150213~rtm-0ubuntu1
ii libmedia-hub-common3:armhf 3.0.0+15.04.20150213~rtm-0ubuntu1
ii media-hub 3.0.0+15.04.20150213~rtm-0ubuntu1

1. Play music from music-app and plug in headphones
2. Notice that music is now heard from headphones and the main speaker is turned off
3. Unplug headphones, notice that music is now heard from the main speaker but it does not autopause like it should

I debugged the PulseAudioOutputObserver class and don't see where it ever updates the connected state of the external_output_state class property in on_query_for_sink_finished() or any other function. I only see it initializing the property to disconnected to begin with, but then never sets it again.

[Ricardo Salveti (rsalveti)]

Working fine with latest revision.