Pipewire implementation for i.MX8MP on Yocto

[Wobaffet]

To implement A2DP and HFP we were following this UM11490 manual which is implementing pipewire and wireplumber for these profiles. We are currently on 5.15 branch on yocto. We've added pipewire and wireplumber packages however we can't start pipewire service and here is the log:

root@imx8mp-lpddr4-evk:~# journalctl -xeu pipewire.service > log.txt
root@imx8mp-lpddr4-evk:~# cat log.txt 
Apr 28 20:13:56 imx8mp-lpddr4-evk pipewire[445]: [W][00006.220577] pw.context   | [       context.c:  374 pw_context_new()] 0xaaaae7d41a40: can't load dbus library: support/libspa-dbus
Apr 28 20:13:56 imx8mp-lpddr4-evk pipewire[445]: [E][00006.696141] pw.module    | [   impl-module.c:  278 pw_context_load_module()] No module "libpipewire-module-rt" was found
Apr 28 20:13:56 imx8mp-lpddr4-evk pipewire[445]: [E][00006.713110] pw.module    | [   impl-module.c:  278 pw_context_load_module()] No module "libpipewire-module-profiler" was found
Apr 28 20:13:56 imx8mp-lpddr4-evk pipewire[445]: [E][00006.713160] pw.conf      | [          conf.c:  560 load_module()] 0xaaaae7d41a40: could not load mandatory module "libpipewire-module-profiler": No such file or directory
Apr 28 20:13:56 imx8mp-lpddr4-evk systemd[1]: pipewire.service: Failed with result 'exit-code'.
-- Subject: Unit failed
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- The unit pipewire.service has entered the 'failed' state with result 'exit-code'.
Apr 28 20:13:58 imx8mp-lpddr4-evk systemd[1]: Failed to start PipeWire Multimedia Service.
-- Subject: A start job for unit pipewire.service has failed
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- A start job for unit pipewire.service has finished with a failure.
-- 
-- The job identifier is 642 and the job result is failed.

What are the missing packages causing these errors?

Thanks!

Best Regards.

[Wobaffet]

reminder.

[Wobaffet]

Hello, custom board, i.MX8MP, we are using yocto for our distribution and on 5.15 kernel version kirkstone branch. module is 

AW-CM358 which is NXP based 88W8987. Here is the bbappend

DISTRO_FEATURES:append = " pulseaudio bluetooth bluez-lc3 pipewire" 
pipewire pipewire-pulse wireplumber \ "
pulseaudio \

DISTRO_FEATURES:append = " pulseaudio bluetooth bluez-lc3 pipewire"

Module suppose to be supporting HFP, on my case, why I can't use pipewire, what are the missing packages according to logs I've provided earlier?

[JorgeCas · Accepted solution]

Hello, I apologize for the delayed response.

Our 5.15 Linux BSP uses PulseAudio by default and has been replaced by the PipeWire since the L6.6.3_1.0.0 release. The implementation of PipeWire need additional layers, you could use our last release as reference to take this recipe or directly use last release with PipeWire already implemented.

Users need to start the PipeWire by running the next command for the first time after the bootup.

systemctl --user --now enable pipewire wireplumber pipewire-pulse

Best regards.

[Wobaffet]

Thanks, we managed to run with Pulseaudio.

[JorgeCas]

Hello,

Could you please share the steps to reproduce the issue, and which module/OS are you using?

I suggest you confirm with module manufacturer if HFP is supported and please make sure that you have pulseadudio packages installed in your image.

Best regards,