[mediahub3] fails to pause when a a2dp device gets disconnected

[Ricardo Salveti]

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

To reproduce:
1 - Start music-app and play a song;
2 - Connect to a valid a2dp device;
3 - Disconnect the a2dp device;

The expected behavior is for it to stop when the device gets disconnected (when the active sink change as a result of being removed).

Log of what happens:
PulseAudio event for sink with index 2 received.
PulseAudio event for sink with index 2 received.
PulseAudio event for sink with index 0 received.
PulseAudio sink details for sink.primary with index 0 is available:
  Port: output-analog_dock_headset
  Port: output-aux_digital
  Port: output-bluetooth_sco
  Port: output-digital_dock_headset
  Port: output-earpiece
  Port: output-fm_tx
  Port: output-parking
  Port: output-sco_carkit
  Port: output-sco_headset
  Port: output-speaker
  Port: output-speaker+wired_headphone
  Port: output-wired_headphone [monitored]
  Port: output-wired_headset [monitored]
PulseAudio event for sink with index 0 received.
PulseAudio sink details for sink.primary with index 0 is available:
  Port: output-analog_dock_headset
  Port: output-aux_digital
  Port: output-bluetooth_sco
  Port: output-digital_dock_headset
  Port: output-earpiece
  Port: output-fm_tx
  Port: output-parking
  Port: output-sco_carkit
  Port: output-sco_headset
  Port: output-speaker
  Port: output-speaker+wired_headphone
  Port: output-wired_headphone [monitored]
  Port: output-wired_headset [monitored]

PulseAudio event for sink with index 0 received.
PulseAudio event for sink with index 2 received.
PulseAudio sink details for sink.primary with index 0 is available:
  Port: output-analog_dock_headset
  Port: output-aux_digital
  Port: output-bluetooth_sco
  Port: output-digital_dock_headset
  Port: output-earpiece
  Port: output-fm_tx
  Port: output-parking
  Port: output-sco_carkit
  Port: output-sco_headset
  Port: output-speaker
  Port: output-speaker+wired_headphone
  Port: output-wired_headphone [monitored]
  Port: output-wired_headset [monitored]

[Ricardo Salveti (rsalveti)]

Looking at the code, it's not tracking the active sink as before, and it's expecting the a2dp device to be just a port of the main device (output-a2dp_headphones), which doesn't really exist.