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path: root/dot/local/bin/amixer-enable-mic
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#!/bin/sh

SETME=${1:-100%}
SETME_BOOST=${2:-50%}

enable_recording()
{
  local DEV="$1"
  amixer -D "$DEV" controls | (
    IFS=,
    while read a b c _; do
      case "${c#name=}" in
        *Boost*)
          amixer -D "$DEV" cset "$a,$b,$c" "$SETME_BOOST";;
        *Capture*)
          amixer -D "$DEV" cset "$a,$b,$c" "$SETME";;
      esac
    done
  )
}

hardware_devices()
{
  arecord -L |
    while IFS= read line; do
      case "$line" in hw:*)
        dev=${line##*DEV=}
        echo hw:${dev%%,*}
        ;;
      esac
    done
}

for dev in default $(hardware_devices); do
  enable_recording $dev
done