macos – Play audio from Docker container

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macos – Play audio from Docker container

Mojahid

October 8, 2024

On my MacBook (Sonoma 14.6.1), I’ve acquired a Python script that makes use of pyaudio (which makes use of portaudio) to play audio recordsdata by my speaker. The script works simply tremendous. Nevertheless, for causes, I might prefer to run the script within a Docker container (Ubuntu 22.04). After I run my script that manner, I get

ALSA lib confmisc.c:855:(parse_card) can not discover card '0'
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_card_inum returned error: No such file or listing
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_concat returned error: No such file or listing
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating identify
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_refer returned error: No such file or listing
ALSA lib conf.c:5701:(snd_config_expand) Consider error: No such file or listing
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM sysdefault
ALSA lib confmisc.c:855:(parse_card) can not discover card '0'
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_card_inum returned error: No such file or listing
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_concat returned error: No such file or listing
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating identify
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_refer returned error: No such file or listing
ALSA lib conf.c:5701:(snd_config_expand) Consider error: No such file or listing
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM sysdefault
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.entrance
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.rear
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.center_lfe
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.facet
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.surround21
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.surround21
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.surround40
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.surround41
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.surround50
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.surround51
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.surround71
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.iec958
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.iec958
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.iec958
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.hdmi
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.hdmi
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.modem
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.modem
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.phoneline
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM playing cards.pcm.phoneline
ALSA lib confmisc.c:855:(parse_card) can not discover card '0'
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_card_inum returned error: No such file or listing
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_concat returned error: No such file or listing
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating identify
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_refer returned error: No such file or listing
ALSA lib conf.c:5701:(snd_config_expand) Consider error: No such file or listing
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM default
ALSA lib confmisc.c:855:(parse_card) can not discover card '0'
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_card_inum returned error: No such file or listing
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_concat returned error: No such file or listing
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating identify
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_refer returned error: No such file or listing
ALSA lib conf.c:5701:(snd_config_expand) Consider error: No such file or listing
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM default
ALSA lib confmisc.c:855:(parse_card) can not discover card '0'
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_card_id returned error: No such file or listing
ALSA lib confmisc.c:422:(snd_func_concat) error evaluating strings
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_concat returned error: No such file or listing
ALSA lib confmisc.c:1334:(snd_func_refer) error evaluating identify
ALSA lib conf.c:5178:(_snd_config_evaluate) perform snd_func_refer returned error: No such file or listing
ALSA lib conf.c:5701:(snd_config_expand) Consider error: No such file or listing
ALSA lib pcm.c:2664:(snd_pcm_open_noupdate) Unknown PCM dmix

I am guessing this has one thing to do with the container being unable to find the audio gadget. Is there an choice I can go to docker run to mount the gadget?

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