linux linein 录音

-- 预先找到linein 输入端口的序号和名称
-- 录音服务启动的时候，先执行以下脚本，切换一下默认设备

#!/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"

来源：oschina

链接：https://my.oschina.net/mingyuejingque/blog/4695340