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e67e27f047
hw:0,0 is an exclusive ALSA device — darkice holding it caused arecord to fail silently (stderr was /dev/null), leaving all recordings at 0 bytes with no errors in the log. asound.conf: defines a dsnoop virtual device 'shared_mic' that opens hw:0,0 once and lets multiple processes capture simultaneously. docker-compose.yml: mount asound.conf into the container as /etc/asound.conf; add ipc: host so the container shares the host IPC namespace (dsnoop uses System V shared memory which does not cross the container IPC boundary without this). config.example.ini: document the dsnoop setup and shared-device pattern. README, CLAUDE.md: document the full setup procedure.
23 lines
771 B
YAML
23 lines
771 B
YAML
services:
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recorder:
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build: .
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volumes:
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- ./config.ini:/app/config.ini:ro
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- ./recordings:/app/recordings # matches output_directory = recordings in config.ini
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- ./asound.conf:/etc/asound.conf:ro # dsnoop shared-capture config
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# Soundcard (ALSA) access — comment out if you only record streams
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devices:
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- /dev/snd:/dev/snd
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ipc: host # share IPC namespace with host so dsnoop shared memory works
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restart: unless-stopped
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stop_grace_period: 30s # allow time for open files to be closed cleanly
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web:
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build: .
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volumes:
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- ./recordings:/recordings:ro
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ports:
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- "8080:8080"
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restart: unless-stopped
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command: ["python", "web.py", "--dir", "/recordings"]
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