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| -rwxr-xr-x | configs/releng/airootfs/usr/local/bin/livecd-sound | 97 |
diff --git a/configs/releng/airootfs/usr/local/bin/livecd-sound b/configs/releng/airootfs/usr/local/bin/livecd-sound index baae0d2..b92fcf2 100755 --- a/configs/releng/airootfs/usr/local/bin/livecd-sound +++ b/configs/releng/airootfs/usr/local/bin/livecd-sound @@ -3,7 +3,7 @@ # SPDX-License-Identifier: GPL-3.0-or-later usage() { - cat <<- _EOF_ + cat <<-_EOF_ live cd sound helper script. Usage: livecdsound [OPTION] OPTIONS @@ -14,14 +14,13 @@ usage() { _EOF_ } -bugout () { +bugout() { printf "/usr/local/bin/livecdsound: programming error" stat_fail } -echo_card_indices() -{ - if [ -f /proc/asound/cards ] ; then +echo_card_indices() { + if [[ -f /proc/asound/cards ]]; then sed -n -e's/^[[:space:]]*\([0-7]\)[[:space:]].*/\1/p' /proc/asound/cards fi } @@ -33,8 +32,8 @@ echo_card_indices() # $1 <card id> # $2 <control> # $3 <level> -unmute_and_set_level(){ - { [ "$3" ] &&[ "$2" ] && [ "$1" ] ; } || bugout +unmute_and_set_level() { + [[ -n "$3" && -n "$2" && -n "$1" ]] || bugout systemd-cat -t "livecdsound" printf "Setting: %s on card: %s to %s\n" "$2" "$1" "$3" systemd-cat -t "livecdsound" amixer -c "$1" set "$2" "$3" unmute return 0 @@ -42,9 +41,8 @@ unmute_and_set_level(){ # $1 <card id> # $2 <control> -mute_and_zero_level() -{ - { [ "$1" ] && [ "$2" ] ; } || bugout +mute_and_zero_level() { + [[ -n "$1" && -n "$2" ]] || bugout systemd-cat -t "livecdsound" printf "Muting control: %s on card: %s\n" "$2" "$1" systemd-cat -t "livecdsound" amixer -c "$1" set "$2" "0%" mute return 0 @@ -53,17 +51,15 @@ mute_and_zero_level() # $1 <card ID> # $2 <control> # $3 "on" | "off" -switch_control() -{ - { [ "$3" ] && [ "$1" ] ; } || bugout +switch_control() { + [[ -n "$3" && -n "$1" ]] || bugout systemd-cat -t "livecdsound" printf "Switching control: %s on card: %s to %s\n" "$2" "$1" "$3" systemd-cat -t "livecdsound" amixer -c "$1" set "$2" "$3" return 0 } # $1 <card ID> -sanify_levels_on_card() -{ +sanify_levels_on_card() { unmute_and_set_level "$1" "Front" "80%" unmute_and_set_level "$1" "Master" "80%" unmute_and_set_level "$1" "Master Mono" "80%" @@ -134,94 +130,89 @@ sanify_levels_on_card() } # $1 <card ID> | "all" -sanify_levels() -{ +sanify_levels() { local ttsdml_returnstatus=0 local card case "$1" in - all) - for card in $(echo_card_indices) ; do - sanify_levels_on_card "$card" || ttsdml_returnstatus=1 - done - ;; - *) - sanify_levels_on_card "$1" || ttsdml_returnstatus=1 - ;; + all) + for card in $(echo_card_indices); do + sanify_levels_on_card "$card" || ttsdml_returnstatus=1 + done + ;; + *) + sanify_levels_on_card "$1" || ttsdml_returnstatus=1 + ;; esac - return $ttsdml_returnstatus + return "$ttsdml_returnstatus" } # List all cards that *should* be usable for PCM audio. In my experience, # the console speaker (handled by the pcsp driver) isn't a suitable playback # device, so we'll exclude it. -list_non_pcsp_cards() -{ +list_non_pcsp_cards() { for card in $(echo_card_indices); do local cardfile="/proc/asound/card${card}/id" - if [ -r "$cardfile" ] && [ -f "$cardfile" ] && \ - [ "$(cat "$cardfile")" != pcsp ]; then + if [[ -r "$cardfile" && -f "$cardfile" && "$(cat "$cardfile")" != pcsp ]]; then echo "$card" fi done } # Properly initialize the sound card so that we have audio at boot. -unmute_all_cards() -{ +unmute_all_cards() { sanify_levels all } is_numeric() { - local str=$1 + local str="$1" [[ "$str" =~ ^[0-9]+$ ]] } set_default_card() { - local card=$1 - sed -e "s/%card%/$card/g" < /usr/local/share/livecd-sound/asound.conf.in \ - > /etc/asound.conf + local card="$1" + sed -e "s/%card%/$card/g" </usr/local/share/livecd-sound/asound.conf.in \ + >/etc/asound.conf } play_on_card() { - local card=$1 file=$2 + local card="$1" file="$2" aplay -q "-Dplughw:$card,0" "$file" } # If there are multiple usable sound cards, prompt the user to choose one, # using auditory feedback. -pick_a_card() -{ +pick_a_card() { set -f usable_cards="$(list_non_pcsp_cards)" - num_usable_cards="$(wc -w <<< "$usable_cards")" + num_usable_cards="$(wc -w <<<"$usable_cards")" - if [ "$num_usable_cards" -eq 1 ]; then + if (( num_usable_cards == 1 )); then systemd-cat -t "livecdsound" printf "Only one sound card is detected\n" exit 0 fi systemd-cat -t "livecdsound" printf "multiple sound cards detected\n" - for card in $usable_cards; do + for card in "${usable_cards[@]}"; do if ! is_numeric "$card"; then continue fi - play_on_card "$card" /usr/share/livecd-sounds/pick-a-card.wav& + play_on_card "$card" /usr/share/livecd-sounds/pick-a-card.wav & done wait sleep 1 - for card in $usable_cards; do + for card in "${usable_cards[@]}"; do if ! is_numeric "$card"; then continue - fi - play_on_card "$card" /usr/share/livecd-sounds/beep.wav - if read -r -t 10; then - systemd-cat -t "livecdsound" printf "Selecting %s sound card as default\n" "$card" - set_default_card "$card" - break - fi -done + fi + play_on_card "$card" /usr/share/livecd-sounds/beep.wav + if read -r -t 10; then + systemd-cat -t "livecdsound" printf "Selecting %s sound card as default\n" "$card" + set_default_card "$card" + break + fi + done } -if [[ $# -eq 0 ]]; then +if (( $# == 0 )); then echo "error: No argument passed." exit 1 fi |