Difference between revisions of "Transclusion: Debian: iMX7: Bluez5 PulseAudio"

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(New page: ==== Bluez5 & PulseAudio ==== Debian stretch/sid is using BlueZ 5 and PluseAudio 5, which are fairly new.<br> BlueZ 5 dropped support for alsa, so the solution for now is to use PulseAudio...)
 
imported>Uri.mashiach
 
Line 99: Line 99:
 
[bluetooth]# agent on
 
[bluetooth]# agent on
 
[bluetooth]# default-agent
 
[bluetooth]# default-agent
−
[bluetooth]# scan  
+
[bluetooth]# scan on
 
</pre>
 
</pre>
 
Now make sure that your headset is in pairing mode. It should be discovered shortly. For example,
 
Now make sure that your headset is in pairing mode. It should be discovered shortly. For example,
Line 160: Line 160:
 
<pre>
 
<pre>
 
root@cl-rootfs:~# pactl list sinks | awk '/00_07_A4_F2_B3_CB/' RS=""
 
root@cl-rootfs:~# pactl list sinks | awk '/00_07_A4_F2_B3_CB/' RS=""
−
Sink #1
+
Sink #2
 
         State: SUSPENDED
 
         State: SUSPENDED
−
         Name: bluez_sink.00_07_A4_F2_B3_CB
+
         Name: bluez_sink.00_07_A4_F2_B3_CB.a2dp_sink
 
         Description: Motorola HT820
 
         Description: Motorola HT820
 
         Driver: module-bluez5-device.c
 
         Driver: module-bluez5-device.c
Line 172: Line 172:
 
                 balance 0.00
 
                 balance 0.00
 
         Base Volume: 65536 / 100% / 0.00 dB
 
         Base Volume: 65536 / 100% / 0.00 dB
−
         Monitor Source: bluez_sink.00_07_A4_F2_B3_CB.monitor
+
         Monitor Source: bluez_sink.00_07_A4_F2_B3_CB.a2dp_sink.monitor
 
         Latency: 0 usec, configured 0 usec
 
         Latency: 0 usec, configured 0 usec
 
         Flags: HARDWARE DECIBEL_VOLUME LATENCY  
 
         Flags: HARDWARE DECIBEL_VOLUME LATENCY  
Line 196: Line 196:
 
:* Play sound using {{filename|paplay}}. Example:
 
:* Play sound using {{filename|paplay}}. Example:
 
<pre>
 
<pre>
−
root@cl-rootfs:~# paplay -d bluez_sink.00_07_A4_F2_B3_CB /path/to/<audio-file.wav>
+
root@cl-rootfs:~# paplay -d bluez_sink.00_07_A4_F2_B3_CB.a2dp_sink /path/to/<audio-file.wav>
 
</pre>
 
</pre>

Latest revision as of 08:30, 5 December 2018

Bluez5 & PulseAudio

Debian stretch/sid is using BlueZ 5 and PluseAudio 5, which are fairly new.
BlueZ 5 dropped support for alsa, so the solution for now is to use PulseAudio.
PulseAudio 5 only supports the A2DP profile and not HSP/HFP.

  • Software to install pulseaudio, pulseaudio-module-bluetooth
Admolition note.png debian-image.tar.bz2 has all these packages pre-installed. Continue to the Start PulseAudio section if you use this root filesystem.
Install and configure PulseAudio
root@cl-rootfs:~# apt-get install --no-install-recommends pulseaudio pulseaudio-module-bluetooth
  • Create a systemd service for running pulseaudio as the pulse user.
root@cl-rootfs:~# cat << eof > /etc/systemd/system/pulseaudio.service
[Unit]
Description=Pulse Audio

[Service]
Type=simple
ExecStart=/usr/bin/pulseaudio --system --disallow-exit --disable-shm

[Install]
WantedBy=multi-user.target
eof

root@cl-rootfs:~# chown pulse:pulse /etc/systemd/system/pulseaudio.service
  • Create a dbus configuration file for running pulseaudio. Give the pulse user permission to use Bluetooth.
root@cl-rootfs:~# cat << eof > /etc/dbus-1/system.d/pulseaudio-bluetooth.conf
<busconfig>

  <policy user="pulse">
    <allow send_destination="org.bluez"/>
  </policy>

</busconfig>
eof

root@cl-rootfs:~# chmod 0666 /etc/dbus-1/system.d/pulseaudio-bluetooth.conf
  • Paste the following lines to the end of /etc/pulse/system.pa:
root@cl-rootfs:~# cat << eof >> /etc/pulse/system.pa
### Automatically load driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.endif

.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif
eof
  • Create /var/run/pulse/.config/pulse directory. Change its ownership.
root@cl-rootfs:~# mkdir -p /var/run/pulse/.config/pulse
root@cl-rootfs:~# chown -R pulse:pulse /var/run/pulse
  • Make the root belong to the pulse-access,audio groups
root@cl-rootfs:~# usermod -a -G pulse-access,audio root
Start PulseAudio
  • Start PulseAudio service
root@cl-rootfs:~# systemctl daemon-reload
root@cl-rootfs:~# systemctl start pulseaudio.service
  • Make sure that the service is active, running and reports on no errors.
root@cl-rootfs:~# systemctl status pulseaudio.service
   Loaded: loaded (/etc/systemd/system/pulseaudio.service; disabled)
   Active: active (running) since Mon 2015-07-20 12:00:13 UTC; 1min 34s ago
 Main PID: 805 (pulseaudio)
   CGroup: /system.slice/pulseaudio.service
           └─805 /usr/bin/pulseaudio --system --disallow-exit --disable-shm
Bluez5 pairing

PulseAudio 5.x supports A2DP per default.
Make sure the following packages are installed: pulseaudio pulseaudio-module-bluetooth pulseaudio-utils, bluez, bluez-tools.

Admolition note.png Without pulseaudio-module-bluetooth you won't be able to connect after the next pairing and you won't get any usable error messages.
  • Start the Bluetooth system:
root@cl-rootfs:~# systemctl start bluetooth

Now we can use the bluetoothctl command line utility to pair and connect. Run 

root@cl-rootfs:~# bluetoothctl
[bluetooth]#

to be greeted by its internal command prompt.Then enter: 

[bluetooth]# power on
[bluetooth]# agent on
[bluetooth]# default-agent
[bluetooth]# scan on

Now make sure that your headset is in pairing mode. It should be discovered shortly. For example, 

[NEW] Device 00:07:A4:F2:B3:CB Motorola HT820

shows a device that calls itself "Motorola HT820" and has MAC address 00:07:A4:F2:B3:CB. We will now use that MAC address to initiate the pairing: 

[bluetooth]# pair 00:07:A4:F2:B3:CB

After pairing, you also need to explicitly connect the device: 

[bluetooth]# connect 00:07:A4:F2:B3:CB

If everything works correctly, you now have a separate output device in PulseAudio.
You can now disable scanning again and exit the program: 

[bluetooth]# scan off
[bluetooth]# exit
Playback using PulseAudio
Admolition note.png Next examples assume that the device mac address is 00_07_A4_F2_B3_CB
  • Show the PulseAudio device
root@cl-rootfs:~# pactl list cards  | awk '/00_07_A4_F2_B3_CB/' RS=""
Card #1                                                                                                                                                                     
        Name: bluez_card.00_07_A4_F2_B3_CB                                                                                                                                  
        Driver: module-bluez5-device.c                                                                                                                                      
        Owner Module: 13                                                                                                                                                    
        Properties:                                                                                                                                                         
                device.description = "Motorola HT820"                                                                                                                       
                device.string = "00:07:A4:F2:B3:CB"                                                                                                                         
                device.api = "bluez"                                                                                                                                        
                device.class = "sound"                                                                                                                                      
                device.bus = "bluetooth"                                                                                                                                    
                device.form_factor = "headset"                                                                                                                              
                bluez.path = "/org/bluez/hci0/dev_00_07_A4_F2_B3_CB"                                                                                                        
                bluez.class = "0x240404"                                                                                                                                    
                bluez.alias = "Motorola HT820"                                                                                                                              
                device.icon_name = "audio-headset-bluetooth"                                                                                                                
                device.intended_roles = "phone"                                                                                                                             
        Profiles:                                                                                                                                                           
                headset_head_unit: Headset Head Unit (HSP/HFP) (sinks: 1, sources: 1, priority: 20, available: no)
                a2dp_sink: High Fidelity Playback (A2DP Sink) (sinks: 1, sources: 0, priority: 10, available: yes)
                off: Off (sinks: 0, sources: 0, priority: 0, available: yes)
        Active Profile: a2dp_sink
        Ports:
                headset-output: Headset (priority: 0, latency offset: 0 usec)
                        Part of profile(s): headset_head_unit, a2dp_sink
                headset-input: Headset (priority: 0, latency offset: 0 usec, not available)
                        Part of profile(s): headset_head_unit
  • Make sure the active card profile is a2dp_sink. Otherwise switch to it:
# pactl set-card-profile 1 a2dp_sink
  • Show the PulseAudio sink
root@cl-rootfs:~# pactl list sinks | awk '/00_07_A4_F2_B3_CB/' RS=""
Sink #2
        State: SUSPENDED
        Name: bluez_sink.00_07_A4_F2_B3_CB.a2dp_sink
        Description: Motorola HT820
        Driver: module-bluez5-device.c
        Sample Specification: s16le 2ch 48000Hz
        Channel Map: front-left,front-right
        Owner Module: 13
        Mute: no
        Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
                balance 0.00
        Base Volume: 65536 / 100% / 0.00 dB
        Monitor Source: bluez_sink.00_07_A4_F2_B3_CB.a2dp_sink.monitor
        Latency: 0 usec, configured 0 usec
        Flags: HARDWARE DECIBEL_VOLUME LATENCY 
        Properties:
                bluetooth.protocol = "a2dp_sink"
                device.description = "Motorola HT820"
                device.string = "00:07:A4:F2:B3:CB"
                device.api = "bluez"
                device.class = "sound"
                device.bus = "bluetooth"
                device.form_factor = "headset"
                bluez.path = "/org/bluez/hci0/dev_00_07_A4_F2_B3_CB"
                bluez.class = "0x240404"
                bluez.alias = "Motorola HT820"
                device.icon_name = "audio-headset-bluetooth"
                device.intended_roles = "phone"
        Ports:
                headset-output: Headset (priority: 0)
        Active Port: headset-output
        Formats:
                pcm
  • Play sound using paplay. Example:
root@cl-rootfs:~# paplay -d bluez_sink.00_07_A4_F2_B3_CB.a2dp_sink /path/to/<audio-file.wav>
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