paswitch

paswitch

#!/bin/bash
set -e
IFS=$'\t'

list_devices() {
    local line default_sink_name default_source_name
    local sink source name driver format state

    while read -r line; do
        case ${line} in
            'Default Sink: '*) default_sink_name=${line#Default Sink: } ;;
            'Default Source: '*) default_source_name=${line#Default Source: } ;;
        esac
    done < <(pactl info)

    echo 'Sinks:'
    pactl list short sinks |
    while read -r sink name driver format state; do
        [[ "${name}" = "${default_sink_name}" ]] && echo -n '* ' || echo -n '  '
        printf '%s %s\n' "${sink}" "${name}"
    done
    echo

    echo 'Sources:'
    pactl list short sources |
    while read -r source name driver format state; do
        [[ "${name}" = "${default_source_name}" ]] && echo -n '* ' || echo -n '  '
        printf '%s %s\n' "${source}" "${name}"
    done
    echo
}

set-default-sink() {
    local default_sink=${1}
    local sink name driver format state
    while read -r sink name driver format state; do
        if [[ "${sink}" = "${default_sink}" || "${name}" = "${default_sink}" ]]; then
            default_sink=${name}
            break
        fi
    done < <(pactl list short sinks)
    pactl set-default-sink "${default_sink}"
}

set-default-source() {
    local default_source=${1}
    local source name driver format state
    while read -r source name driver format state; do
        if [[ "${source}" = "${default_source}" || "${name}" = "${default_source}" ]]; then
            default_source=${name}
            break
        fi
    done < <(pactl list short sources)
    pactl set-default-source "${default_source}"
}

move-sink-inputs() {
    pactl list short sink-inputs |
    while read -r input sink client driver format; do
        pactl move-sink-input "${input}" @DEFAULT_SINK@
    done
}

move-source-outputs() {
    pactl list short source-outputs |
    while read -r output source client driver format; do
        pactl move-source-output "${output}" @DEFAULT_SOURCE@
    done
}

usage() {
    cat <<EOF

Usage:
 $0 [options] -- [sink] [source]

Options:
 -h, --help             This usage message
 -l, --list             List available sinks and sources
 -i, --sink[=sink]      Move streams to the [new] default sink
 -o, --source[=source]  Move streams to the [new] default source
EOF
}

TEMP=$(getopt -o hlo::i:: -l help,list,sink::,source:: -n "$0" -- "$@") || { usage; exit 1; }
eval set -- "${TEMP}"

DO_HELP= DO_LIST= DO_SINK= DO_SOURCE=
while (($#)); do
    case ${1} in
        -h|--help) DO_HELP=1; shift ;;
        -l|--list) DO_LIST=1; shift ;;
        -o|--sink) DO_SINK=${2:-'*'}; shift 2 ;;
        -i|--source) DO_SOURCE=${2:-'*'}; shift 2 ;;
        --) shift; break ;;
        *) echo 'Internal error!' >&2; exit 1 ;;
    esac
done
[[ -n ${DO_SINK} ]] || DO_SINK=${1}; shift || :
[[ -n ${DO_SOURCE} ]] || DO_SOURCE=${1}; shift || :
[[ $# -eq 0 ]] || { usage; exit 1; }

[[ -z ${DO_HELP} ]] || { usage; exit; }
[[ -z ${DO_LIST} && ( -n ${DO_SINK} || -n ${DO_SOURCE} ) ]] || list_devices
[[ -z ${DO_SINK} ]] || {
    [[ ${DO_SINK} = '*' ]] || set-default-sink "${DO_SINK}"
    move-sink-inputs
}
[[ -z ${DO_SOURCE} ]] || {
    [[ ${DO_SOURCE} = '*' ]] || set-default-source "${DO_SOURCE}"
    move-source-outputs
}