linux linein 錄音

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-- 預先找到linein 輸入埠的序號和名稱
-- 錄音服務啟動的時候，先執行以下指令碼，切換一下預設裝置

#!/usr/bin/env bash

PRUN=`ps aux |grep pulseaudio | grep -v grep |wc -l`
echo "pulseaudio ps cnt:  ${PRUN}"

if [ "${PRUN}"x ==  "0"x  ] 
then
  echo "start pulseaudio...."
  /usr/bin/pulseaudio --start --log-target=syslog
fi

echo "set default mic to line in..."
#pacmd set-source-port 1 analog-input-linein
pacmd set-source-port alsa_input.pci-0000_00_1b.0.analog-stereo analog-input-linein

pacmd list-sources |grep -e "index" -e "line"