Simplify and prevent killing existing mpv instances

Instead of the trigger file and killing mpv, we loop the ring
indefinitely until killed. Maybe we should still got a guardrail but I
still never needed it (modemmonitor would trigger missed_call late or
later ?)

Signed-off-by: Stacy Harper <contact@stacyharper.net>
Signed-off-by: Maarten van Gompel <proycon@anaproy.nl>

configs/default_hooks/missed_call

@@ -3,6 +3,7 @@
 # This script is executed (asynchronously) when you missed a call
 # You can use it to play a ring tone
 
-#we simply remove the ring trigger file
-#written by the ring hook and the ringing will stop
-rm /tmp/ring.trigger
+# kill existing ring playback
+MPVID="$(cat "$XDG_RUNTIME_DIR/sxmo.ring.pid")"
+kill $MPVID
+rm "$XDG_RUNTIME_DIR/sxmo.ring.pid"

configs/default_hooks/pickup

@@ -2,8 +2,8 @@
 
 # This script is executed (asynchronously) when you pick up an incoming call
 
-# remove the ring trigger
-rm /tmp/ring.trigger
+# kill existing ring playback
+MPVID="$(cat "$XDG_RUNTIME_DIR/sxmo.ring.pid")"
+kill $MPVID
+rm "$XDG_RUNTIME_DIR/sxmo.ring.pid"
 
-# kill any existing playback
-pkill mpv

configs/default_hooks/ring

@@ -3,22 +3,13 @@
 # This script is executed (asynchronously) when you get an incoming call
 # You can use it to play a ring tone
 
-#vibrate the phone once
-sxmo_vibratepine 2500 &
+# Start the mpv ring until another hook kill it
+mpv --quiet --no-video --loop /usr/share/sxmo/ring.ogg &
+MPVID=$!
+echo "$MPVID" > "$XDG_RUNTIME_DIR/sxmo.ring.pid"
 
-#we create a temporary trigger file /tmp/ring.trigger
-#and ring for as long as it exists
-#the missed_call or pickedup hooks delete
-#delete this trigger again
-touch /tmp/ring.trigger
-i=0
-while [ -f /tmp/ring.trigger ]; do
-	#play the ring over and over again as long as the trigger persists
-	#(you may want to replace this with a vibration)
-	mpv --quiet --no-video /usr/share/sxmo/ring.ogg
-	i=$((i+1))
-	if [ $i -gt 10 ]; then
-		#safety check to protect against runaway endless ringing
-		rm /tmp/ring.trigger
-	fi
+# Vibrate while mpv is running
+while kill -0 $MPVID; do
+		sxmo_vibratepine 1500
+		sleep 0.5
 done