Change audio Source in my Mac, input and output

README.md

Change Audio Source Automation

If you have multiple Audio Inputs like me:

• MacBook Pro Speakers
• Astro A50 Game
• Krisp Speaker
• DisplayPort (my monitor speakers)

And you want to change audio source using your keyboard you can use these two scripts alongside with

• Spark Keyboard shortcut

• SwitchAudioSource

Im pretty sure you can use Automator with Keyboard shortcut but have not tested

Steps

• Save .change-audio-source.sh in your home
• Create a new HotKey in Spark with the contents of invoke-change-source.applescript and map it to FnX (function key)

change-audio-source.sh

#!/bin/bash

AudioOutput=$(/usr/local/Cellar/switchaudio-osx/1.0.0/SwitchAudioSource -a -t output |egrep --color=no -v "Voice|krisp" |sed "s/(output)//g"  |sort  )

AudioOutputLength=$(echo "$AudioOutput" |wc -l)

CurrentDevice=$(/usr/local/Cellar/switchaudio-osx/1.0.0/SwitchAudioSource -c)
NewDevice=$CurrentDevice



function switchNextAudioDevice(){
    index=1
    found=0
    while IFS= read -r line; do
        if echo "$line" |grep --color=no -q "$CurrentDevice";then
            found=1
            index=$(( index + 1 ))
            break
        fi
        index=$(( index + 1 ))
    done <<< "${AudioOutput[@]}"

    #echo -e "index: $index \n found: $found"


    if [[ $found -eq 1 ]];then
        if [[ $index -gt $AudioOutputLength ]];then
            index=0
            export NewDevice=$( echo "${AudioOutput}" |sed -n 1p )
            echo $NewDevice
        fi


        export NewDevice=$( echo "${AudioOutput}" | sed -n $(( $index ))p   )
        echo $NewDevice
    fi
}



echo "[$(date)]" > /tmp/change-audio.log

NewOutputDevice=$(switchNextAudioDevice)

input=$(echo $NewOutputDevice |rev | cut -d ' ' -f 2-  |rev)


NewInput=$(/usr/local/Cellar/switchaudio-osx/1.0.0/SwitchAudioSource -a -t input |grep -v Game |grep --color=no "$input" )
NewInput=$(echo $NewInput |sed "s=(input)==" | xargs)


#echo -e  "INPUT: $NewInput - $input \n OUTPUT: $NewOutputDevice "


if echo $NewOutputDevice |grep -q --color=no "DisplayPort" ;then
    #echo "Setting default"
    /usr/local/Cellar/switchaudio-osx/1.0.0/SwitchAudioSource -t input -s  "MacBook Pro Microphone"
else
     /usr/local/Cellar/switchaudio-osx/1.0.0/SwitchAudioSource -t input -s "$NewInput"
fi



/usr/local/Cellar/switchaudio-osx/1.0.0/SwitchAudioSource -t output -s "$NewOutputDevice"

invoke-change-source.applescript

set the currentAudioSource to (do shell script "~/.change-audio-source.sh")
display notification currentAudioSource