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authornl6720 <nl6720@gmail.com>2022-12-06 14:20:30 +0200
committernl6720 <nl6720@gmail.com>2023-06-15 15:12:28 +0300
commit28a3a54c5f28e40a935609de9b092fe0c1cfee24 (patch)
treed65be4ebbacca79c995bc2ae8133455717be7352 /configs/releng/airootfs/usr/local/bin/livecd-sound
parent40dbfcfaf0a06a5c8e92a1d5183d8ae4e4634835 (diff)
Fix optional shellcheck warnings
Additionally fix a few code style issues found with shfmt.
Diffstat (limited to 'configs/releng/airootfs/usr/local/bin/livecd-sound')
-rwxr-xr-xconfigs/releng/airootfs/usr/local/bin/livecd-sound97
1 files changed, 44 insertions, 53 deletions
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