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|
#!/bin/bash
# Read player's current speed and output the wanted speed
# pause +- value will not work.
# No music + or - 1 octave is always no music.
speed="$3"
speedcalc() {
if [[ "`locale decimal_point`" == , ]] ; then
speed=$(echo ${speed/,/.})
fi
speed=$(echo $speed*$1|bc -l)
if [[ "`locale decimal_point`" == , ]] ; then
if [[ "$2" == "alsaplayer" ]] ; then
speed=$(echo ${speed/./,})
else
speed=$(echo ${speed/,/.})
fi
fi
echo $speed
}
speedcase() {
case "$1" in
max)
if [[ "$2" == "alsaplayer" ]] ; then
echo 10
else
echo 100
fi
;;
normal)
echo 1
;;
pause)
echo 0
;;
back)
echo -1
;;
min)
if [[ "$2" == "alsaplayer" ]] ; then
echo -10
else
speedcalc 0.01 "$2"
fi
;;
+6octave)
speedcalc 64 "$2"
;;
+5octave)
speedcalc 32 "$2"
;;
+4octave)
speedcalc 16 "$2"
;;
+3octave)
speedcalc 8 "$2"
;;
+2octave)
speedcalc 4 "$2"
;;
+1octave)
speedcalc 2 "$2"
;;
+1septieme)
speedcalc 1.88774862536 "$2"
;;
+1sixte)
speedcalc 1.68179283051 "$2"
;;
+1quinte)
speedcalc 1.49830707688 "$2"
;;
+1quarte)
speedcalc 1.33483985417 "$2"
;;
+1tierce)
speedcalc 1.25992104989 "$2"
;;
+1ton)
speedcalc 1.12246204831 "$2"
;;
+1/2ton)
speedcalc 1.05946309436 "$2"
;;
+1comma)
speedcalc 531441/524288 "$2"
;;
-1comma)
speedcalc 524288/531441 "$2"
;;
-1/2ton)
speedcalc 0.943874312682 "$2"
;;
-1ton)
speedcalc 0.89089871814 "$2"
;;
-1tierce)
speedcalc 0.793700525984 "$2"
;;
-1quarte)
speedcalc 0.749153538438 "$2"
;;
-1quinte)
speedcalc 0.667419927085 "$2"
;;
-1sixte)
speedcalc 0.594603557501 "$2"
;;
-1septieme)
speedcalc 0.52973154718 "$2"
;;
-1octave)
speedcalc 0.5 "$2"
;;
-2octave)
speedcalc 0.25 "$2"
;;
-3octave)
speedcalc 0.125 "$2"
;;
-4octave)
speedcalc 0.0625 "$2"
;;
-5octave)
speedcalc 0.03125 "$2"
;;
-6octave)
speedcalc 0.015625 "$2"
;;
*)
echo 1
;;
esac
}
speedcase $1 $2
# references: http://fr.wikipedia.org/wiki/Gamme_temp%C3%A9r%C3%A9e
|
