58 lines
1.3 KiB
Bash
Executable File
58 lines
1.3 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (C) 2013 Mark Hills <mark@xwax.org>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# version 2, as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License version 2 for more details.
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#
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# You should have received a copy of the GNU General Public License
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# version 2 along with this program; if not, write to the Free
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# Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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#
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# View graph of BPM analysis
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#
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set -e
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usage()
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{
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cat <<END
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bpm-graph (C) Copyright 2013 Mark Hills <mark@xwax.org>
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Usage: bpm-graph <file>
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Display tempo analysis data
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See the bpm-graph(1) man page for more information.
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END
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}
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if [ -z "$1" ] || [ "$1" = "-h" ]; then
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usage >&2
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exit 1
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fi
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set -u
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FILE="$1"
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shift
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TMP=`mktemp -t bpm.XXXXXX` || exit 1
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trap "rm $TMP" 0
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sox "$FILE" -r 44100 -e float -c 1 -t raw - | bpm -m 60 -x 180 -g $TMP
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gnuplot -p <<END
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set style data lines
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set ylabel "Difference"
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set xlabel "Offset (Beats per minute)"
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plot "$TMP" title "`echo "$FILE" | sed -e 's:\":\\\\":g'`"
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END
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