androidthings/sample-bluetooth-audio

Bluetooth A2DP sample using Android Things

sample-bluetooth-audio's Issues

Microphone support

From what I understand this sample allow you to transform an Android Things device into a BT speaker, would be nice to support microphone also to allow voice command, with this android things devices can be used as phone headset like in cars or deported voice assistant

Audio lags with Bluetooth A2DP

I tested the sample on my Android Things with an Android device paired and then played some audio which resulted playback in lag.

audio not works with rpi3

Hi,

audio playback seem not works on rpi3 developer 0.7.

Android things pico maker kit

Hello I don't hear any audio audio output on that board what shall I do ? No HDMI or display is attached

When androidthings plays audio, it's very unclear

I used this demo. But when androidthings plays audio, it's very unclear. I don't know why.

is it working on android?

I have some old phones with android. I want use it as bluetooth sink.
Can i use sample-bluetooth-audio with old phones to listen music via bluetooth?

Audio source example

Will there be an example for audio source i.e. audio playback via Bluetooth speakers?

Caused by: java.lang.RuntimeException: Stub!

Hello,

I got this error when application launch.

Caused by: java.lang.RuntimeException: Stub!
at com.google.android.things.bluetooth.BluetoothProfileManager.(BluetoothProfileManager.java:20)
at com.example.androidthings.bluetooth.audio.A2dpSinkActivity.setupBTProfiles(A2dpSinkActivity.java:224)
at com.example.androidthings.bluetooth.audio.A2dpSinkActivity.initA2DPSink(A2dpSinkActivity.java:246)
at com.example.androidthings.bluetooth.audio.A2dpSinkActivity.onCreate(A2dpSinkActivity.java:170)
at android.app.Activity.performCreate(Activity.java:6672)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1140)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2612)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6123) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757) 

FATAL EXCEPTION

Hi,
It has a problem with the example and not runing:

FATAL EXCEPTION: main
    Process: com.example.androidthings.bluetooth.audio, PID: 2555
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidthings.bluetooth.audio/com.example.androidthings.bluetooth.audio.A2dpSinkActivity}: java.lang.SecurityException: Need BLUETOOTH permission: Neither user 10037 nor current process has android.permission.BLUETOOTH.
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)

Want to create UI for this app

I don't have any issues with this project. It is working completely fine for me. I have some query in this. I
want to show all metadata from AVRCP to my activity.xml file. I want to display artist name, title track and all the other data to my user as I am using this in a car. Additionally, I also wanted to to control my player not only from my phone but from UI as well.
Thank You in advance
Please help!!!

Not updated to support 0.5.1-preview

When trying to run on 0.5.1-preview I get the following exception:

com.example.androidthings.bluetooth.audio E/AndroidRuntime: FATAL EXCEPTION: main
                                                                                         Process: com.example.androidthings.bluetooth.audio, PID: 1948
                                                                                         java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.androidthings.bluetooth.audio/com.example.androidthings.bluetooth.audio.A2dpSinkActivity}: java.lang.SecurityException: Caller lacks required permission com.google.android.things.permission.MANAGE_INPUT_DRIVERS
                                                                                             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
                                                                                             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
                                                                                             at android.app.ActivityThread.-wrap11(Unknown Source:0)
                                                                                             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
                                                                                             at android.os.Handler.dispatchMessage(Handler.java:105)
                                                                                             at android.os.Looper.loop(Looper.java:164)
                                                                                             at android.app.ActivityThread.main(ActivityThread.java:6541)
                                                                                             at java.lang.reflect.Method.invoke(Native Method)
                                                                                             at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                                                                                             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
                                                                                          Caused by: java.lang.SecurityException: Caller lacks required permission com.google.android.things.permission.MANAGE_INPUT_DRIVERS
                                                                                             at android.os.Parcel.readException(Parcel.java:1942)
                                                                                             at android.os.Parcel.readException(Parcel.java:1888)
                                                                                             at com.google.android.things.userdriver.IInputDriverService$Stub$Proxy.createInputDevice(IInputDriverService.java:140)
                                                                                             at com.google.android.things.userdriver.InputDriver.initialize(InputDriver.java:241)
                                                                                             at com.google.android.things.userdriver.InputDriverManager.addInputDriver(InputDriverManager.java:47)
                                                                                             at com.google.android.things.userdriver.UserDriverManager.registerInputDriver(UserDriverManager.java:83)
                                                                                             at com.google.android.things.contrib.driver.button.ButtonInputDriver.register(ButtonInputDriver.java:83)
                                                                                             at com.example.androidthings.bluetooth.audio.A2dpSinkActivity.configureButton(A2dpSinkActivity.java:311)
                                                                                             at com.example.androidthings.bluetooth.audio.A2dpSinkActivity.initA2DPSink(A2dpSinkActivity.java:247)
                                                                                             at com.example.androidthings.bluetooth.audio.A2dpSinkActivity.onCreate(A2dpSinkActivity.java:173)

So it needs me to request the MANAGE_INPUT_DRIVERS permission. And if I do that:
ActivityCompat.requestPermissions(this, new String[]{"com.google.android.things.permission.MANAGE_INPUT_DRIVERS"}, 0);

Then the UI displays an "Allow ... to perform" dialog. But if my IoT device doesn't have screen and input then you can't click the allow button.

Transmitting stops after few minutes

After start of play in few minutes the connection is broken with this log message:
beginning of crash 05-16 21:19:30.972 676-701/com.android.bluetooth A/libc: system/bt/hci/src/buffer_allocator.c:25: buffer_alloc: assertion "size <= BT_DEFAULT_BUFFER_SIZE" failed 05-16 21:19:30.973 676-701/com.android.bluetooth A/libc: Fatal signal 6 (SIGABRT), code -6 in tid 701 (bluetooth wake) [ 05-16 21:19:30.973 135: 135 W/ ] debuggerd: handling request: pid=676 uid=1002 gid=1002 tid=701 05-16 21:19:31.072 3787-3787/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 05-16 21:19:31.073 3787-3787/? A/DEBUG: Build fingerprint: 'generic/iot_rpi3/rpi3:7.0/NIG86E/3884620:userdebug/test-keys' 05-16 21:19:31.073 3787-3787/? A/DEBUG: Revision: '0' 05-16 21:19:31.073 3787-3787/? A/DEBUG: ABI: 'arm' 05-16 21:19:31.073 3787-3787/? A/DEBUG: pid: 676, tid: 701, name: bluetooth wake >>> com.android.bluetooth <<< 05-16 21:19:31.073 3787-3787/? A/DEBUG: signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr -------- 05-16 21:19:31.086 3787-3787/? A/DEBUG: Abort message: 'system/bt/hci/src/buffer_allocator.c:25: buffer_alloc: assertion "size <= BT_DEFAULT_BUFFER_SIZE" failed' 05-16 21:19:31.086 3787-3787/? A/DEBUG: r0 00000000 r1 000002bd r2 00000006 r3 00000008 05-16 21:19:31.086 3787-3787/? A/DEBUG: r4 9de7e978 r5 00000006 r6 9de7e920 r7 0000010c 05-16 21:19:31.086 3787-3787/? A/DEBUG: r8 9eb79e18 r9 9eb79e22 sl 9eb79dd8 fp 9eb79e1c 05-16 21:19:31.086 3787-3787/? A/DEBUG: ip 00000000 sp 9de7e3e0 lr b33d832f pc b33dab7c cpsr 20000010 05-16 21:19:31.116 3787-3787/? A/DEBUG: backtrace: 05-16 21:19:31.116 3787-3787/? A/DEBUG: #00 pc 00048b7c /system/lib/libc.so (tgkill+12) 05-16 21:19:31.116 3787-3787/? A/DEBUG: #01 pc 0004632b /system/lib/libc.so (pthread_kill+34) 05-16 21:19:31.116 3787-3787/? A/DEBUG: #02 pc 0001c6d5 /system/lib/libc.so (raise+10) 05-16 21:19:31.117 3787-3787/? A/DEBUG: #03 pc 00018237 /system/lib/libc.so (__libc_android_abort+34) 05-16 21:19:31.117 3787-3787/? A/DEBUG: #04 pc 00017770 /system/lib/libc.so (abort+4) 05-16 21:19:31.117 3787-3787/? A/DEBUG: #05 pc 0001a6ef /system/lib/libc.so (__libc_fatal+22) 05-16 21:19:31.117 3787-3787/? A/DEBUG: #06 pc 0001842f /system/lib/libc.so (__assert2+18) 05-16 21:19:31.117 3787-3787/? A/DEBUG: #07 pc 0007b97d /system/lib/hw/bluetooth.default.so 05-16 21:19:31.117 3787-3787/? A/DEBUG: #08 pc 0007c8e7 /system/lib/hw/bluetooth.default.so 05-16 21:19:31.117 3787-3787/? A/DEBUG: #09 pc 000e2ef1 /system/lib/hw/bluetooth.default.so 05-16 21:19:31.117 3787-3787/? A/DEBUG: #10 pc 000e3cab /system/lib/hw/bluetooth.default.so 05-16 21:19:31.117 3787-3787/? A/DEBUG: #11 pc 00045dfb /system/lib/libc.so (_ZL15__pthread_startPv+22) 05-16 21:19:31.118 3787-3787/? A/DEBUG: #12 pc 00018c8d /system/lib/libc.so (__start_thread+6)

BluetoothProfileManager.getInstance(); NoSuchMethod

hi ,thanks for the demo ,recently I'm research a feature about how can use a a2dp sink on Android. so I download the androidthings and this demo project . But it's build smoothly while running crashed with "BluetoothProfileManager.getInstance(); NoSuchMethod", the androidthings is 0.6.1-devpreview android 8.1.0, a raspberry pi version. so I modify by Java reflection to get a BluetoothProfileManager Object, and it running well. then I use another android phone connect to it and play a song, the tone quality is very poor, of course I have try to remove the hdmi. I don't know why the tone quality is so poor, so I ask for a help, good wishes!

Can't connect to the Android Things device

Hello, I installed the exmaple on my Android Things device and i can start the application and see the device in my bluetooth list. Pairing is also no problem, but when i want to connect to the device, it disconnects after a few seconds.
I tried it with 3 devices (Android, Iphone and Macbook Pro). Do you know why this is happening?

Thanks in advance!

_MS Suffix Used for Value in Seconds

A minor nitpick: DISCOVERABLE_TIMEOUT_MS suggests that the time unit is milliseconds. The actual value and its usage is for time measured in seconds, though.