export WIDTH=720
# Width is the luma width. The chroma width and analysis width is half */
export FRAME_RATE=25
export LOWER_FREQUENCY=167

export SAMPLES_PER_FRAME=`expr "$LOWER_FREQUENCY" \* "$WIDTH" / 2 \
	/ "$FRAME_RATE"`
echo SAMPLES_PER_FRAME=$SAMPLES_PER_FRAME
if [ "$#" -lt 1 ]
then
	echo -e "\nTwibright Reflectoscope high performance realtime music analyser" >&2
	echo -e "\nUsage: rfs <sound_file>" >&2
	echo -e "\nwhere <sound_file> is playable by mplayer" >&2
	echo -e "Output is MPEG4 24Mbps PCM sound into <sound_file>.avi" >&2
	echo -e "GAIN sets the sensitivity of the analyzer / brightness of" \
		"the output. Default 30" >&2
	echo -e "BANDWIDTH sets the selectivity / bandwidth in semitones. Default 0.333\n" \
		>&2
	exit 1
fi
if [ `expr "$WIDTH" % 2` -ne 0 ]
then
	echo Width must be even. >&2
	exit 1
fi 
SAMPLE_RATE=`expr "$SAMPLES_PER_FRAME" \* "$FRAME_RATE"`
echo SAMPLE_RATE="$SAMPLE_RATE"

if [ -z "$SPEEDUP" ] ;
then
	SPEEDUP=1
fi
echo SPEEDUP=$SPEEDUP
make sf && mplayer -vc null -vo null "$1" -ao pcm:file=/dev/stdout -really-quiet | sox -t wav - -r "$SAMPLE_RATE" -c 1 -s -2 -L -t raw - | ./sf  | mencoder - -demuxer rawvideo -rawvideo fps="$FRAME_RATE":w="$WIDTH":h=576:yuy2 -audiofile "$1" -aspect 1.333 -o "$1".avi -of avi -oac pcm -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=24000000