NEXUS issue (low latency playback)

[AppWerft]

Hi Felix,
on NEXUS5 and NEXUS6p the visualizer only works if headphone is plug in or bluetooth is connected.

If I plug out the headphone:

V WiredAccessoryManager: notifyWiredAccessoryChanged: when=107798440914000 bits= mask=84
V WiredAccessoryManager: newName=h2w newState=0 headsetState=0 prev headsetState=2
I WiredAccessoryManager: MSG_NEW_DEVICE_STATE
V WiredAccessoryManager: headsetName:  disconnected

and after I see:

D audio_hw_primary: out_set_parameters: enter: usecase(1: low-latency-playback) kvpairs: routing=8
D audio_hw_primary: adev_set_parameters: enter: disconnect=8
W AudioTrack: dead IAudioTrack, PCM, creating a new one from obtainBuffer()
D audio_hw_primary: out_set_parameters: enter: usecase(1: low-latency-playback) kvpairs: routing=2
D audio_hw_primary: select_devices: out_snd_device(2: speaker) in_snd_device(0: none)
D audio_hw_primary: disable_audio_route: reset and update mixer path: low-latency-playback
D audio_hw_primary: disable_snd_device: snd_device(5: headphones)
I soundtrigger: audio_extn_sound_trigger_update_device_status: device 0x5 of type 0 for Event 0
D msm8974_platform: platform_send_audio_calibration: sending audio calibration for snd_device(2) acdb_id(15)
I soundtrigger: audio_extn_sound_trigger_update_device_status: device 0x2 of type 0 for Event 1
D audio_hw_primary: enable_snd_device: snd_device(2: speaker)
D audio_hw_primary: enable_audio_route: apply and update mixer path: low-latency-playback speaker
D AudioFlinger: mixer(0xf4680000) throttle end: throttle time(12)

Edit: it works as aspected with AudioPlayer. The issue come only by using od Mediaplayer and this https://github.com/vbartacek/aacdecoder-android/blob/master/decoder/src/com/spoledge/aacdecoder/MultiPlayer.java player.

[AppWerft]

OK I have deeper tested. It only happens if I use a streaming client like https://github.com/vbartacek/aacdecoder-android. This streamer pump the decoded PCM into an AudioTracker.

If I use the standard MediaPlayer, the the visualizer works without problems. In attachment the test code.
app.js.zip

Maybe I can modify the AudioTarcker params, but currently I don't know how.