Re: BlueZ for Android 4.4.3

[Zheng Tao-B46827 <b46827@freescale.com>]

Hi, Lukasz
Thanks for your reply. Following you steps, the previous problem has 
been resolved, but it seems that the connection is not stable. When I 
execute av connect, I can hear "Connected" from my Bluetooth headset, 
but it will be disconnected immediately which i can hear 
"disconnected".  And it will prompt "I/bluetoothd( 1061): 
bluetoothd[1062]: Unable to find matching endpoint". Is this a bug? can 
you give some advise?

 > av connect 24:fd:52:b6:a0:99
connection_state: connection_state=BTAV_CONNECTION_STATE_CONNECTING 
remote_bd_addr=24:fd:52:b6:a0:99
if_av->connect: BT_STATUS_SUCCESS
 > D/BlueZ   ( 1060): 
external/bluetooth/bluez/android/hal-a2dp.c:a2dp_connect()
acl_state_changed_cb: status=BT_STATUS_SUCCESS 
remote_bd_addr=24:fd:52:b6:a0:99 state=BT_ACL_STATE_CONNECTED
 > D/BlueZ   ( 1060): 
external/bluetooth/bluez/android/hal-bluetooth.c:handle_acl_state_changed() 
state 0
connection_state: connection_state=BTAV_CONNECTION_STATE_DISCONNECTED 
remote_bd_addr=24:fd:52:b6:a0:99
 > I/bluetoothd( 1061): bluetoothd[1062]: Unable to find matching endpoint
acl_state_changed_cb: status=BT_STATUS_SUCCESS 
remote_bd_addr=24:fd:52:b6:a0:99 state=BT_ACL_STATE_DISCONNECTED
 > D/BlueZ   ( 1060): 
external/bluetooth/bluez/android/hal-bluetooth.c:handle_acl_state_changed() 
state 1


On 2/11/2015 4:16 PM, Lukasz Rymanowski wrote:
> Hi Tony,
>
> On Tue, Feb 10, 2015 at 2:51 AM, Zheng Tao-B46827 <b46827@freescale.com> wrote:
>> Hi, Peers
>>
>> Thanks for your hard work that let us can experience BlueZ for Android.  But
>> I am faced with a audio/a2dp problems that stick me many weeks.
>>
>> I’m try to port Bluez to kitkat 4.4.3, and many common profiles, such as
>> HIDP/FTP/GATT can function successfully. But the A2DP profile failed.
>>
>> So, I try to debug it using haltest tool as follows(with USB Bluetooth
>> Dongle):
>>
>> 1.bluetooth init
>>
>> 2.bluetooth enable
>>
>> 3.bluetooth get_profile_interface a2dp
>>
>> 4.bluetooth start_discovery
>>
>> 5.bluetooth create_bond xxxxxxxx
>>
> Here you should setup A2DP using "av connect <bdaddr>." (don't forget
> to do av init before.)  Once you are connected you can open stream.
>
>
>> 6.audio init
>>
>> 7.audio open_output_stream
>>
>> Then it will prompts:
>>
>> D/BlueZ   ( 1106):
>> external/bluetooth/bluez/android/hal-audio.c:audio_open_output_stream()
>>
>> D/BlueZ   ( 1106):
>> external/bluetooth/bluez/android/hal-audio.c:ipc_open_stream_cmd()
>>
>> E/BlueZ   ( 1106): audio: Invalid cmd socket passed to audio_ipc_cmd
>>
>> E/BlueZ   ( 1106): audio: cannot open output stream
>>
>> when I debug it , I found that
>>
>> BlueZ   ( 1106): external/bluetooth/bluez/android/hal-audio.c:ipc_handler()
>> Waiting for connection ...
>>
>> And it seems that there is no audio socket to connect it.
>>
>> I’m not familiar with Bluez stack details, can you give some advice? What
>> should I do to enable audio/a2dp functionality and execute audio play
>> command? Thanks.
>
> \Lukasz
>
>> ----------------------------------------------
>>
>> *Best Regards!*
>>
>> Tony Zheng
>>
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