keysh

set -eu

Time-out in seconds for single volume press

TO=0.150

Time-out in seconds for holding down volume button

TO_HOLD=0.100

Duration of vibration in ms

DUR_S=100

How long to keep your phone awake when using volume buttons in ms

WL_MAX=1500

Track the toggle state

STATE=0 # 0 = Start Activity, 1 = Stop Activity

on_both_pressed() { if [ "$STATE" -eq 0 ]; then

Launch RecordingStartActivity

cmd intent -t activity -p com.fadcam/.RecordingStartActivity STATE=1 else

Launch RecordingStopActivity

cmd intent -t activity -p com.fadcam/.RecordingStopActivity STATE=0 fi cmd vibrate $DUR_S }

on_up() { read -t $TO key && { [ "$key" = "$PRESS_DOWN" ] && { on_both_pressed return } cmd volume current up return } while true; do read -t $TO_HOLD key || { cmd volume current up continue } return done }

on_down() { read -t $TO key && { [ "$key" = "$PRESS_UP" ] && { on_both_pressed return } cmd volume current down return } while true; do read -t $TO_HOLD key || { cmd volume current down continue } return done }

loop() { while read key; do cmd wakelock acquire $WL_MAX case "$key" in "$PRESS_UP" ) on_up ;; "$PRESS_DOWN" ) on_down ;; esac cmd wakelock release done }

encode_list() { ENCODED=""; for arg in "$@"; do ENCODED="${ENCODED}${#arg}:${arg}" done ENCODED="${#ENCODED}:$ENCODED" } cmd() { encode_list "$@"; echo "$ENCODED" }

loop