Bluetooth headset management with VOIP App using OpenSL ES

56 views

Skip to first unread message

Claude Chausse-ccr

unread,

Jul 29, 2016, 11:33:11 AM7/29/16

to android-ndk

I am working on a VOIP application that is doing audio Streaming using openSL.

I cannot get any bluetooth Headset audio to work properly.

AudioManager mode is set to MODE_IN_COMMUNICATION, I request audio focus with AudioManager.STREAM_VOICE_CALL, OpenSL playback configuration stream type is set to SL_ANDROID_STREAM_VOICE, and the recording preset is configured with SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION.

I also use device optimal samplingrate and buffersize.

Everything works fine in speaker mode, with wired headset but when I connect a bluetooth headset I usually get audio playback for the microphone (input stream) is not working.

For bluetooth, I call startBluetoothSco() when I detect a headset using BroadcastReceiver. (I also tried to use setBluetoothScoOn(true) but I am not sure I understand what it means.

When I connect a Watch it is even worst because the Because I get Audio state to connect and immediatly after it disconnects and I get no audio even in playback.

I am really out of ideas to fix that.

Anyone has made a Voip App that is able to properly manage audio headsets dynamic changes.

Anh Tuấn Hoàng

unread,

Dec 17, 2016, 2:45:32 PM12/17/16

to android-ndk

Vào 22:33:11 UTC+7 Thứ Sáu, ngày 29 tháng 7 năm 2016, Claude Chausse-ccr đã viết: