headphone button does not play/pause music.

[Chris Gagnon]

Summary:
headphone button does not play/pause music

Steps:
1. plug in headphones with a call/hangup button in headphone jack
2. import music in to music folder
3. open music app and play song
3. press headphone button a few times

expected results:
music is played or paused when pressing the headphone button

actual results
nothing happens.

Additional info, this should also answer/hangup a phone call.

[Jim Hodapp (jhodapp)]

I'll have to get a headphone pair that has this kind of button. I do have the Apple earbuds that have volume buttons...I'll have to see if this works.

[dobey (dobey)]

http://blog.naver.com/PostView.nhn?blogId=shoehorn&logNo=60140867322 might be helpful.

[Simon K (octav14n)]

This seems to be a duplicate of https://bugs.launchpad.net/music-app/+bug/1231909 .
If you agree, please mark one of the bugs as a duplicate of the other one.

[Selene ToyKeeper (toykeeper)]

Still broken in Utopic image 140.

[Ricardo Salveti (rsalveti)]

I don't see how this fix would end up being part of pulseaudio, as it shouldn't be controlling the play/pause by itself (the external client should be responsible for that instead).

I'm still not completely sure how android is managing such headset switch (probably via input devices), but I believe this should be part of media-hub instead.

[Ricardo Salveti (rsalveti)]

Some useful info: https://source.android.com/accessories/headset-spec.html

[James Lewis (james-fsck)]

This appears to apply to bluetooth headphones also....

[Jim Hodapp (jhodapp)]

@James: support for BT headsets will be coming with the Bluez5 landing that is currently being worked on. So stay tuned.

[Sturm Flut (sturmflut)]

My wired headset generates key input events on krillin and mako, and Unity already has partial support for them. The problem seems to be that the hardware/driver does not emit the same key codes on all devices.

Sennheiser CX2.00G earbuds connected to krillin OTA-8:
Play/Pause/Hook button emits Qt::Key_MediaPlay
Volume up button emits Qt::Key_MediaPrevious
Volume down button emits Qt::Key_MediaNext

Sennheiser CX2.00G earbugs connected to mako ubuntu-touch/rc-proposed/ubuntu-pd r85:
Play/Pause/Hook button emits Qt::Key_LaunchMedia
Volume up button emits nothing
Volume down button emits nothing

As far as I can see AOSP ships a key mapping file for every device to compensate for this.

[James Lewis (james-fsck)]

Bluetooth play/pause confirmed NOT working in OTA12.

[James Lewis (james-fsck)]

Confirmed in OTA-13

Also, this impacts bluetooth car audio systems, so this issue may now be safety related.