# Shared ALSA capture device using dsnoop.
# Allows multiple processes (e.g. darkice and ISR) to read from hw:0,0 simultaneously.
#
# Deploy:
#   sudo cp asound.conf /etc/asound.conf   (host — for darkice)
#   docker-compose.yml mounts it into the recorder container automatically.
#
# Both darkice and ISR must use "shared_mic" as their device name instead of "hw:0,0".

pcm.shared_mic {
    type     dsnoop
    ipc_key  1024
    ipc_perm 0666
    slave {
        pcm      "hw:0,0"
        channels 2
        rate     48000
        format   S16_LE
    }
}