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#!@TARGET_PYTHON@
# Copyright (C) 2006--2015 Brailcom, o.p.s.
#
# Author: Milan Zamazal <pdm@brailcom.org>
#
# This file is part of LilyPond, the GNU music typesetter.
#
# LilyPond is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# LilyPond is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
import optparse
import os
import sys
"""
@relocate-preamble@
"""
def process_options (args):
parser = optparse.OptionParser (version="@TOPLEVEL_VERSION@")
parser.add_option ('', '--filter-tracks', metavar='REGEXP', action='store', type='string', dest='regexp',
help="display only tracks numbers, of those track names matching REGEXP")
parser.add_option ('', '--prefix-tracks', metavar='PREFIX', action='store', type='string', dest='prefix',
help="prefix filtered track numbers with PREFIX")
parser.add_option ('', '--dump', action='store_true', dest='dump',
help="just dump parsed contents of the MIDI file")
parser.add_option ('', '--pretty', action='store_true', dest='pretty',
help="dump parsed contents of the MIDI file in human-readable form (implies --dump)")
parser.usage = parser.usage + " FILE"
options, args = parser.parse_args (args)
if len (args) != 1:
parser.print_help ()
sys.exit (2)
return options, args
def read_midi (file):
import midi
return midi.parse (open (file).read ())
def track_info (data):
tracks = data[1]
def track_name (track):
name = ''
for time, event in track:
if time > 0:
break
if event[0] == 255 and event[1] == 3:
name = event[2]
break
return name
track_info = []
for i in range (len (tracks)):
track_info.append ((i, track_name (tracks[i])))
return track_info
class formatter:
def __init__ (self, txt = ""):
self.text = txt
def format_vals (self, val1, val2 = ""):
return str (val1) + str(val2)
def format (self, val1, val2 = ""):
return self.text + self.format_vals (val1, val2)
class none_formatter (formatter):
def format_vals (self, val1, val2 = ""):
return ''
class meta_formatter (formatter):
def format_vals (self, val1, val2):
return str (val2);
class tempo_formatter (formatter):
def format_vals (self, val1, val2):
return str (ord (val2[0])*65536 + ord (val2[1])*256 + ord (val2[2])) \
+ " msec/quarter"
class time_signature_formatter (formatter):
def format_vals (self, val1, val2 = ""):
from fractions import Fraction
# if there are more notated 32nd notes per midi quarter than 8,
# we display a fraction smaller than 1 as scale factor.
r = Fraction(8, ord (val2[3]))
if r == 1:
ratio =""
else:
ratio = " *" + str (r)
return str (ord (val2[0])) + "/" + str(1 << ord (val2[1])) + ratio \
+ ", metronome " + str (Fraction (ord (val2[2]), 96))
class key_signature_formatter (formatter):
def format_vals (self, val1, val2):
key_names = ['F', 'C', 'G', 'D', 'A', 'E', 'B']
key = (((ord(val2[0])+128)%256)-128) + ord(val2[1])*3 + 1;
return (key_names[key%7] + (key/7) * "is" + (-(key/7)) * "es"
+ " " + ['major','minor'][ord(val2[1])])
class channel_formatter (formatter):
def __init__ (self, txt, ch):
formatter.__init__ (self, txt)
self.channel = ch
def format (self, val1, val2 = ""):
return self.text + "Channel " + str (self.channel) + ", " + \
self.format_vals (val1, val2)
class control_mode_formatter (formatter):
def __init__ (self, txt, ch):
formatter.__init__ (self, txt)
self.mode = ch
def format (self, val1, val2 = ""):
return self.text + str (self.mode) + ", " + \
self.format_vals (val1, val2)
class note_formatter (channel_formatter):
def pitch (self, val):
pitch_names = ['C', 'Cis', 'D', 'Dis', 'E', 'F', 'Fis', 'G', 'Gis', 'A', 'Ais', 'B'];
p = val % 12;
oct = val / 12 -1;
return pitch_names[p] + str(oct) + "(" + str(val) + ")"
def velocity (self, val):
#01 #10 #20 #30 #40 #50 #60 #70 #7F
pass;
def format_vals (self, val1, val2):
return self.pitch (val1)
meta_dict = {0x00: meta_formatter ("Seq.Nr.: "),
0x01: meta_formatter ("Text: "),
0x02: meta_formatter ("Copyright: "),
0x03: meta_formatter ("Track name: "),
0x04: meta_formatter ("Instrument: "),
0x05: meta_formatter ("Lyric: "),
0x06: meta_formatter ("Marker: "),
0x07: meta_formatter ("Cue point: "),
0x2F: none_formatter ("End of Track"),
0x51: tempo_formatter ("Tempo: "),
0x54: meta_formatter ("SMPTE Offs.:"),
0x58: time_signature_formatter ("Time signature: "),
0x59: key_signature_formatter ("Key signature: ")
}
def dump_event (ev, time, padding):
ch = ev[0] & 0x0F;
func = ev[0] & 0xF0;
f = None
if (ev[0] == 0xFF):
f = meta_dict.get (ev[1], formatter ())
if (func == 0x80):
f = note_formatter ("Note off: ", ch)
elif (func == 0x90):
if (ev[2] == 0):
desc = "Note off: "
else:
desc = "Note on: "
f = note_formatter (desc, ch)
elif (func == 0xA0):
f = note_formatter ("Polyphonic aftertouch: ", ch, "Aftertouch pressure: ")
elif (func == 0xB0):
f = control_mode_formatter ("Control mode change: ", ch)
elif (func == 0xC0):
f = channel_formatter ("Program Change: ", ch)
elif (func == 0xD0):
f = channel_formatter ("Channel aftertouch: ", ch)
elif (ev[0] in [0xF0, 0xF7]):
f = meta_formatter ("System-exclusive event: ")
if f:
if len (ev) > 2:
print padding + f.format (ev[1], ev[2])
elif len (ev) > 1:
print padding + f.format (ev[1])
else:
print padding + f.format ()
else:
print padding + "Unrecognized MIDI event: " + str (ev);
def dump_midi (data, midi_file, options):
if not options.pretty:
print data
return
# First, dump general info, #tracks, etc.
print "Filename: " + midi_file;
i = data[0];
m_formats = {0: 'single multi-channel track',
1: "one or more simultaneous tracks",
2: "one or more sequentially independent single-track patterns"}
print "MIDI format: " + str (i[0]) + " (" + m_formats.get (i[0], "") + ")";
print "Divisions: " + str (i[1]) + " per whole note";
print "#Tracks: " + str ( len (data[1]))
n = 0;
for tr in data[1]:
time = 0;
n += 1;
print
print "Track " + str(n) + ":"
print " Time 0:"
for ev in tr:
if ev[0]>time:
time = ev[0]
print " Time " + str(time) + ": "
dump_event (ev[1], time, " ");
def go ():
options, args = process_options (sys.argv[1:])
midi_file = args[0]
midi_data = read_midi (midi_file)
info = track_info (midi_data)
if (options.dump or options.pretty):
dump_midi (midi_data, midi_file, options);
elif options.regexp:
import re
regexp = re.compile (options.regexp)
numbers = [str(n+1) for n, name in info if regexp.search (name)]
if numbers:
if options.prefix:
sys.stdout.write ('%s ' % (options.prefix,))
import string
sys.stdout.write (string.join (numbers, ','))
sys.stdout.write ('\n')
else:
for n, name in info:
sys.stdout.write ('%d %s\n' % (n+1, name,))
if __name__ == '__main__':
go ()
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