Thanks Lukasz for your kind reply!
Frankly speaking I have been working on bluez 4.101 for several months
and validated quite some aspects of it, so it could be too costly for
me to upgrade to bluez 5 at the end of the game.
Cheers,
Harry
On Fri, Mar 18, 2016 at 5:01 PM, Łukasz Rymanowski
<lukasz.rymanowski@xxxxxxxxxxx> wrote:
> Hi Harry,
>
> On 18 March 2016 at 06:57, Qingtao Cao <qingtao.cao.au@xxxxxxxxx> wrote:
>> Hi Community,
>>
>> I kept debugging this issue today and found out that aplay failed to
>> send out the .wav file content to bluetooth headset.
>>
>> From the "strace aplay -D btheadset .wav" I can see that the wav file
>> is read in 12000B chunk, but sent to bluetooth socket in 48B chunk of
>> data. Compared with the strace result for aplay through speaker, the
>> wav file can be read correctly, however, when using bluetooth headset
>> aplay always seems to send 48B zero again and again.
>>
>> This explains why there is no sound output at all.
>>
>> fd 6 is the opened wav file.
>> fd 7 is the connection with /org/bluez/audio.
>>
>> ...
>> read(6, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 12000) = 12000
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> read(6, "w\37\210 \21!\6!\320 q
>> \244\37u\36b\35\222\34a\33\314\31\267\30C\30\265\27\234\26"..., 12000)
>> = 12000
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> read(6, "\t\23\205\23\27\24\206\24\330\24G\25\301\25!\26x\26\335\26B\27\211\27\301\27\24\30`\30\211\30"...,
>> 12000) = 12000
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> read(6, "\334\377\343\377\347\377\337\377\332\377\340\377\344\377\342\377\337\377\327\377\324\377\345\377\350\377\331\377\343\377\362\377"...,
>> 12000) = 12000
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> clock_gettime(CLOCK_REALTIME, {1457576840, 978074823}) = 0
>> read(6, "\374\377\361\377\345\377\363\377\366\377\361\377\364\377\364\377\367\377\370\377\352\377\352\377\371\377\362\377\360\377\4\0"...,
>> 12000) = 12000
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> send(7, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 48, 0) = 48
>> ... (endless sending 48b of zeros) ...
>>
>> Any comments?
>>
>> Thanks,
>> Harry
>>
>> On Thu, Mar 17, 2016 at 2:47 PM, Qingtao Cao <qingtao.cao.au@xxxxxxxxx> wrote:
>>> Hi Community,
>>>
>>> I run into a bluetooth headset issue with bluez 4.101. After a
>>> successful pairing and connection, I failed to play a .wav file
>>> through the bluetooth headset by aplay. I have been searching around
>>> for a couple days and looked at bluez 4.101 source code to ensure the
>>> audio.conf settings make sense but still clueless.
>>>
>>> My laptop is Ubuntu 15.04 with bluez 4.101-ubuntu25 (kernel:
>>> 3.19.0-25-generic), the target embedded uses yocto "dizzy" release
>>> with bluez 4.101 as well (kernel: 3.4).
>
> I recommend to use ubuntu 15.10 which have new BlueZ 5.x on it.
>
> On both laptop and target
>>> machine the libasound-module-bluez has been installed properly.
>>>
>>> My settings are:
>>>
>>> 1. /etc/bluetooth/main.conf
>>> The default one, in particular, Class=0x00100
>>>
>>> 2. /etc/bluetooth/audio.conf
>>>
>>> [General]
>>> Enable=Socket
>>>
>>> [Headset]
>>> HFP=true
>>> MaxConnected=1
>>> FastConnectable=false
>>>
>>> [A2DP]
>>> SBCSources=1
>>> SBCSinks=1
>>> MPEG12Sources=1
>>> MPEG12Sinks=1
>>>
>>> 3. ~/.asoundrc
>>> pcm.btheadset {
>>> type plug
>>> slave {
>>> pcm {
>>> type bluetooth
>>> device "1C:48:F9:AD:19:EE"
>>> profile "auto"
>>> }
>>> }
>>>
>>> hint {
>>> show on
>>> description "BT Headset"
>>> }
>>> }
>>>
>>> ctl.btheadset {
>>> type bluetooth
>>> }
>>>
>>> where I have hardcoded the bdaddr of my bluetooth headset.
>>>
>>> 4. My bluetooth headset has been paired and connected successfully:
>>>
>>> $ hcitool con
>>> Connections:
>>> < eSCO 1C:48:F9:AD:19:EE handle 70 state 1 lm MASTER
>>> < ACL 1C:48:F9:AD:19:EE handle 69 state 1 lm MASTER AUTH ENCRYPT
>>>
>>>
>>> 5. On my laptop, I can play through bluetooth headset with mplayer successfully:
>>>
>>> $ mplayer -ao alsa:device=btheadset /usr/share/sounds/alsa/Front_Center.wav
>>>
>>> MPlayer2 2.0-728-g2c378c7-4 (C) 2000-2012 MPlayer Team
>>> Cannot open file '/home/harry/.mplayer/input.conf': No such file
>>> or directory
>>> Failed to open /home/harry/.mplayer/input.conf.
>>> Cannot open file '/etc/mplayer/input.conf': No such file or directory
>>> Failed to open /etc/mplayer/input.conf.
>>>
>>> Playing /usr/share/sounds/alsa/Front_Center.wav.
>>> Detected file format: WAV / WAVE (Waveform Audio) (libavformat)
>>> [lavf] stream 0: audio (pcm_s16le), -aid 0
>>> Load subtitles in /usr/share/sounds/alsa/
>>> Selected audio codec: Uncompressed PCM [pcm]
>>> AUDIO: 48000 Hz, 1 ch, s16le, 768.0 kbit/100.00% (ratio: 96000->96000)
>>> AO: [alsa] 8000Hz 1ch s16le (2 bytes per sample)
>>> Video: no video
>>> Starting playback...
>>> A: 1.4 (01.4) of 1.4 (01.4) 0.1%
>>>
>>> Exiting... (End of file)
>>>
>>>
>>> 6. However, on my laptop, play with aplay failed:
>>>
>>> $ aplay -D btheadset /usr/share/sounds/alsa/Front_Center.wav
>>>
>>> Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16
>>> bit Little Endian, Rate 48000 Hz, Mono
>>> ^CAborted by signal Interrupt...
>>>
>>> All I got is constant beeeeep noises and I have to press Ctrl^C to terminate it.
>>>
>>> 7. On my target machine, the rootfs is provided by "dizzy" yocto
>>> release also with bluez 4.101. I have modified main.conf to define
>>> "Class=0x5A020C" (or simply 0x000200) and audio.conf to enable
>>> "SCORouting=PCM".
>>>
>>> 8. On my target machine, the same aplay command failed as well. But it
>>> doesn't output any sound, no constant beep noise. Only when I
>>> terminated it could I hear a short beep sound.
>>>
>>>
>>> Given that mplayer works on bluetooth headset, I thought the bridging
>>> from alsa to bluez works. However, why aplay failed? On my target
>>> there is only aplay now and it's difficult to add mplay, so I would
>>> have to make aplay work with bluetooth audio.
>>>
>>> Any comments are much appreciated!
>>>
>>> Cheers,
>>> Harry
>>>
>>>
>>> P.S.
>>>
>>> The following is the "bluetoothd -d -n" result during "aplay -D btheadset ...":
>>>
>>> bluetoothd[9490]: audio/unix.c:server_cb() Accepted new client
>>> connection on unix socket (fd=33)
>>> bluetoothd[9490]: audio/unix.c:client_cb() Audio API: BT_REQUEST <-
>>> BT_GET_CAPABILITIES
>>> bluetoothd[9490]: audio/unix.c:unix_ipc_sendmsg() Audio API:
>>> BT_RESPONSE -> BT_GET_CAPABILITIES
>>> bluetoothd[9490]: audio/unix.c:client_cb() Audio API: BT_REQUEST <- BT_OPEN
>>> bluetoothd[9490]: audio/unix.c:handle_sco_open() open sco - object=ANY
>>> source=ANY destination=1C:48:F9:AD:19:EE lock=write
>>> bluetoothd[9490]: audio/unix.c:unix_ipc_sendmsg() Audio API:
>>> BT_RESPONSE -> BT_OPEN
>>> bluetoothd[9490]: audio/unix.c:client_cb() Audio API: BT_REQUEST <-
>>> BT_SET_CONFIGURATION
>>> bluetoothd[9490]: audio/unix.c:unix_ipc_sendmsg() Audio API:
>>> BT_RESPONSE -> BT_SET_CONFIGURATION
>>> bluetoothd[9490]: audio/unix.c:client_cb() Audio API: BT_REQUEST <-
>>> BT_START_STREAM
>>> bluetoothd[9490]: audio/headset.c:headset_set_state() State changed
>>> /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE: HEADSET_STATE_CONNECTED ->
>>> HEADSET_STATE_PLAY_IN_PROGRESS
>>> bluetoothd[9490]: audio/media.c:headset_state_changed()
>>> bluetoothd[9490]: audio/media.c:headset_state_changed()
>>> bluetoothd[9490]: audio/headset.c:sco_connect_cb() SCO socket opened
>>> for headset /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE
>>> bluetoothd[9490]: audio/headset.c:sco_connect_cb() SCO fd=35
>>> bluetoothd[9490]: audio/unix.c:unix_ipc_sendmsg() Audio API:
>>> BT_RESPONSE -> BT_START_STREAM
>>> bluetoothd[9490]: audio/unix.c:unix_ipc_sendmsg() Audio API:
>>> BT_INDICATION -> BT_NEW_STREAM
>>> bluetoothd[9490]: audio/headset.c:headset_set_state() State changed
>>> /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE:
>>> HEADSET_STATE_PLAY_IN_PROGRESS -> HEADSET_STATE_PLAYING
>>> bluetoothd[9490]: audio/media.c:headset_state_changed()
>>> bluetoothd[9490]: audio/media.c:headset_state_changed()
>>> bluetoothd[9490]: audio/transport.c:media_transport_acquire()
>>> Transport /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE/fd0: read lock
>>> acquired
>>> bluetoothd[9490]: audio/transport.c:media_transport_acquire()
>>> Transport /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE/fd0: write lock
>>> acquired
>>> bluetoothd[9490]: audio/transport.c:media_owner_create() Owner
>>> created: sender=:1.309 accesstype=rw
>>> bluetoothd[9490]: audio/transport.c:media_transport_release()
>>> Transport /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE/fd0: read lock
>>> released
>>> bluetoothd[9490]: audio/transport.c:media_transport_release()
>>> Transport /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE/fd0: write lock
>>> released
>>> bluetoothd[9490]: audio/transport.c:media_owner_free() Owner :1.309
>>> bluetoothd[9490]: audio/unix.c:client_cb() Unix client disconnected (fd=33)
>>> bluetoothd[9490]: audio/headset.c:headset_set_state() State changed
>>> /org/bluez/9490/hci1/dev_1C_48_F9_AD_19_EE: HEADSET_STATE_PLAYING ->
>>> HEADSET_STATE_CONNECTED
>>> bluetoothd[9490]: audio/media.c:headset_state_changed()
>>> bluetoothd[9490]: audio/media.c:headset_state_changed()
>>> bluetoothd[9490]: audio/unix.c:client_free() client_free(0x7f59b52e54b0)
>> --
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>
>
>
> --
> BR / Pozdrawiam
> Łukasz
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