Memo5 wrote:
> Thanks for your reply!
>
> -Dbtheadset produces a correct output when i play a wav-file with a sampling
> rate of of the headset (8000). Otherwise I get a corrupt sound output. Alsa
> does not resample my sound, but I don't know the issue.
Although I do not have this problem with A2DP I can reproduce it with
profile "voice". For me ALSA does resample the sound but bluetoothd
generates a constant stream of errors:
Jun 8 20:31:11 aqui bluetoothd[25704]: Audio API: BT_REQUEST <-
BT_START_STREAM
Jun 8 20:31:11 aqui bluetoothd[25704]: State changed
/org/bluez/25704/hci0/dev_00_02_76_64_BB_C4: HEADSET_STATE_CONNECTED ->
HEADSET_STATE_PLAY_IN_PROGRESS
Jun 8 20:31:11 aqui bluetoothd[25704]: SCO socket opened for headset
/org/bluez/25704/hci0/dev_00_02_76_64_BB_C4
Jun 8 20:31:11 aqui bluetoothd[25704]: SCO fd=20
Jun 8 20:31:11 aqui bluetoothd[25704]: Audio API: BT_RESPONSE ->
BT_START_STREAM
Jun 8 20:31:11 aqui bluetoothd[25704]: Audio API: BT_INDICATION ->
BT_NEW_STREAM
Jun 8 20:31:11 aqui bluetoothd[25704]: State changed
/org/bluez/25704/hci0/dev_00_02_76_64_BB_C4:
HEADSET_STATE_PLAY_IN_PROGRESS -> HEADSET_STATE_PLAYING
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb d414b200 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb d22d7c00 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb d22d7e00 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb c7506600 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb c74cfc00 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb df07f600 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb df07f400 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb cfe71400 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb cfe71200 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb cfe71000 submission failed
Jun 8 20:31:11 aqui btusb_send_frame: hci0 urb c5d38000 submission failed
ALSA seems to do the right thing:
aplay -v -D bluetooth audio_10.wav
Playing WAVE 'audio_10.wav' : Signed 16 bit Little Endian, Rate 44100
Hz, Stereo
Plug PCM: Route conversion PCM (sformat=S16_LE)
Transformation table:
0 <- 0*0.5 + 1*0.5
Its setup is:
stream : PLAYBACK
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 44100
exact rate : 44100 (44100/1)
msbits : 16
buffer_size : 22050
period_size : 5512
period_time : 125000
tstamp_mode : NONE
period_step : 1
avail_min : 5512
period_event : 0
start_threshold : 22050
stop_threshold : 22050
silence_threshold: 0
silence_size : 0
boundary : 1445068800
Slave: Rate conversion PCM (8000, sformat=S16_LE)
Its setup is:
stream : PLAYBACK
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 1
rate : 44100
exact rate : 44100 (44100/1)
msbits : 16
buffer_size : 22050
period_size : 5512
period_time : 125000
tstamp_mode : NONE
period_step : 1
avail_min : 5512
period_event : 0
start_threshold : 22050
stop_threshold : 22050
silence_threshold: 0
silence_size : 0
boundary : 1445068800
Slave: Bluetooth Audio Device
Its setup is:
stream : PLAYBACK
access : MMAP_INTERLEAVED
format : S16_LE
subformat : STD
channels : 1
rate : 8000
exact rate : 8000 (8000/1)
msbits : 16
buffer_size : 4000
period_size : 1000
period_time : 125000
tstamp_mode : NONE
period_step : 1
avail_min : 1000
period_event : 0
start_threshold : 4000
stop_threshold : 4000
silence_threshold: 0
silence_size : 0
boundary : 2097152000
The "submission failed" floods the logs with its volume.
I am running 4.41. If I record the stream coming off the headset and
play that back it works fine.
John
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