#!/bin/sh
#
# View graph of BPM analysis
#

set -e

if [ -z "$1" ]; then
	echo "Usage: $0 <file>" >&2
	exit 1
fi

set -u

TMP=`mktemp -t bpm.XXXXXX` || exit 1
trap "rm $TMP" 0

sox "$1" -r 44100 -e float -c 1 -t raw - | bpm -g $TMP
gnuplot -p -e "set style data lines; plot \"$TMP\""