Mercurial > ~darius > hgwebdir.cgi > musiccutter
comparison musiccutter.py @ 4:9f4fa5f231e6
Rework to use mido iterator and paginate.
Pagination doesn't handle notes extending over a page yet.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Mon, 07 Mar 2016 21:23:59 +1030 |
parents | 49a33c431b45 |
children | af683606184e |
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3:49a33c431b45 | 4:9f4fa5f231e6 |
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1 #!/usr/bin/env python | 1 #!/usr/bin/env python |
2 | 2 |
3 import exceptions | 3 import exceptions |
4 import itertools | |
4 import mido | 5 import mido |
5 import svgwrite | 6 import svgwrite |
6 import sys | 7 import sys |
7 | 8 |
8 def test(filename = None): | 9 def test(filename = None): |
9 # http://www.orgues-de-barbarie.com/wp-content/uploads/2014/09/format-cartons.pdf | 10 # http://www.orgues-de-barbarie.com/wp-content/uploads/2014/09/format-cartons.pdf |
10 conf = { 'notefile' : 'notes', 'pitch' : 5.5 , 'pagewidth' : 20, 'pageheight' : 15.5 } | 11 conf = { 'notefile' : 'notes', 'pagewidth' : 20, 'pageheight' : 15.5, |
12 'pitch' : 0.55, 'offset' : 0.60, 'timescale' : 1.0 } | |
11 midi2note, note2midi = genmidi2note() | 13 midi2note, note2midi = genmidi2note() |
12 note2slot = loadnote2slot(conf['notefile'], note2midi) | 14 note2slot = loadnote2slot(conf['notefile'], note2midi) |
13 if filename == None: | 15 if filename == None: |
14 filename = 'test.midi' | 16 filename = 'test.midi' |
15 midi2svg(filename, 'test%d.svg', conf['pitch'], midi2note, note2midi, note2slot, conf['pagewidth'], conf['pageheight']) | 17 midi2svg(filename, 'test%02d.svg', midi2note, note2midi, note2slot, conf['pagewidth'], conf['pageheight'], |
18 conf['pitch'], conf['offset'], conf['timescale']) | |
16 | 19 |
17 # http://www.electronics.dit.ie/staff/tscarff/Music_technology/midi/midi_note_numbers_for_octaves.htm | 20 # http://www.electronics.dit.ie/staff/tscarff/Music_technology/midi/midi_note_numbers_for_octaves.htm |
18 def genmidi2note(): | 21 def genmidi2note(): |
19 '''Create forward & reverse tables for midi number to note name (assuming 69 == A440)''' | 22 '''Create forward & reverse tables for midi number to note name (assuming 69 == A440)''' |
20 names = ['C%d', 'C%d#', 'D%d', 'D%d#', 'E%d', 'F%d', 'F%d#', 'G%d', 'G%d#', 'A%d', 'A%d#', 'B%d'] | 23 names = ['C%d', 'C%d#', 'D%d', 'D%d#', 'E%d', 'F%d', 'F%d#', 'G%d', 'G%d#', 'A%d', 'A%d#', 'B%d'] |
44 note2slot[note] = index | 47 note2slot[note] = index |
45 index += 1 | 48 index += 1 |
46 | 49 |
47 return note2slot | 50 return note2slot |
48 | 51 |
49 def emitnote(svg, slot, start, notelen, pageheight): | 52 def emitnote(pages, outpat, slot, start, notelen, pagewidth, pageheight, pitch, offset, timescale): |
50 # Let us say 185 ticks for a quaver and that is 0.5cm long | 53 x = start / timescale |
51 tickscale = 185.0 / 0.5 | 54 pageidx = int(x / pagewidth) |
52 pitch = 0.55 | 55 x = x % pagewidth |
53 offset = 0.60 | |
54 x = start / tickscale | |
55 y = pageheight - (offset + slot * pitch) | 56 y = pageheight - (offset + slot * pitch) |
56 w = notelen / tickscale | 57 w = notelen / timescale |
57 h = pitch | 58 h = pitch |
58 print 'x = %.3f y = %.3f w = %.3f h = %.3f' % (x, y, w, h) | 59 print 'pageidx = %d x = %.3f y = %.3f w = %.3f h = %.3f' % (pageidx, x, y, w, h) |
60 if len(pages) <= pageidx: | |
61 pages.extend(itertools.repeat(None, len(pages) - pageidx + 1)) | |
62 if not pages[pageidx]: | |
63 svg = svgwrite.Drawing(outpat % (pageidx), size = ('%.3fcm' % (pagewidth), '%.3fcm' % (pageheight))) | |
64 pages[pageidx] = svg | |
65 else: | |
66 svg = pages[pageidx] | |
59 svg.add(svgwrite.shapes.Rect(insert = ('%.3fcm' % (x), '%.3fcm' % (y)), | 67 svg.add(svgwrite.shapes.Rect(insert = ('%.3fcm' % (x), '%.3fcm' % (y)), |
60 size = ('%.3fcm' % (w), '%.3fcm' % (h)), | 68 size = ('%.3fcm' % (w), '%.3fcm' % (h)), |
61 stroke = 'red', stroke_width = '1px', fill = 'red')) | 69 stroke = 'red', stroke_width = '1px', fill = 'red')) |
62 | 70 |
63 def midi2svg(inf, outpat, pitch, midi2note, note2midi, note2slot, pagewidth, pageheight): | 71 def midi2svg(inf, outpat, midi2note, note2midi, note2slot, pagewidth, pageheight, pitch, offset, timescale): |
64 playablecount = 0 | 72 playablecount = 0 |
65 unplayablecount = 0 | 73 unplayablecount = 0 |
66 midi = mido.MidiFile(inf) | 74 midi = mido.MidiFile(inf) |
67 svg = svgwrite.Drawing(outpat % (0), size = ('%.3fcm' % (pagewidth), '%.3fcm' % (pageheight))) | 75 ctime = 0 |
68 tnum = 0 | 76 channels = [] |
77 for i in range(16): | |
78 channels.append({}) | |
69 | 79 |
70 for t in midi.tracks: | 80 pages = [] |
71 print "Track", tnum | 81 for ev in midi: |
72 tnum += 1 | 82 ctime += ev.time |
73 channels = [] | 83 #print ctime, ev |
74 for i in range(16): | 84 if ev.type == 'note_on' and ev.velocity > 0: |
75 channels.append({}) | 85 if ev.note in channels[ev.channel]: |
76 ctime = 0 | 86 print 'Duplicate note_on message %d (%s)' % (ev.note, midi2note[ev.note]) |
77 for ev in t: | 87 else: |
78 ctime += ev.time | 88 channels[ev.channel][ev.note] = ctime |
79 print ctime, ev | 89 elif ev.type == 'note_off' or (ev.type == 'note_on' and ev.velocity == 0): |
80 if ev.type == 'note_on' and ev.velocity > 0: | 90 if ev.note not in channels[ev.channel]: |
81 if ev.note in channels[ev.channel]: | 91 print 'note_off with no corresponding note_on for channel %d note %d' % (ev.channel, ev.note) |
82 print "Duplicate channel on message" | |
83 else: | 92 else: |
84 channels[ev.channel][ev.note] = ctime | 93 note = midi2note[ev.note] |
85 elif ev.type == 'note_off' or (ev.type == 'note_on' and ev.velocity == 0): | 94 if note not in note2slot: |
86 if ev.note not in channels[ev.channel]: | 95 print 'Skipping unplayable note %s' % (note) |
87 print 'Note_off with no corresponding note_on for track %d channel %d note %d' % (tnum, ev.channel, ev.note) | 96 unplayablecount += 1 |
88 else: | 97 else: |
89 note = midi2note[ev.note] | 98 start = channels[ev.channel][ev.note] |
90 if note not in note2slot: | 99 notelen = ctime - start |
91 print 'Skipping unplayable note %s' % (note) | 100 slot = note2slot[note] |
92 unplayablecount += 1 | 101 #print 'Note %s (%d) at %d length %d' % (note, slot, start, notelen) |
93 else: | 102 emitnote(pages,outpat, slot, start, notelen, pagewidth, pageheight, pitch, offset, timescale) |
94 start = channels[ev.channel][ev.note] | 103 playablecount += 1 |
95 notelen = ctime - start | 104 del channels[ev.channel][ev.note] |
96 slot = note2slot[note] | 105 elif ev.type == 'end_of_track': |
97 print 'Note %s (%d) at %d length %d' % (note, slot, start, notelen) | 106 print 'EOT, not flushing, check for missed notes' |
98 emitnote(svg, slot, start, notelen, pageheight) | 107 for chan in channels: |
99 print | 108 for ev in chan: |
100 playablecount += 1 | 109 print ev |
101 del channels[ev.channel][ev.note] | 110 |
102 elif ev.type == 'end_of_track': | 111 for svg in pages: |
103 print 'EOT, flushing' | 112 if not svg: |
104 for chan in channels: | 113 asdasd |
105 for ev in chan: | 114 continue |
106 print ev | 115 svg.save() |
107 print | 116 |
108 print | |
109 print | |
110 svg.save() | |
111 print 'Playable count:', playablecount | 117 print 'Playable count:', playablecount |
112 print 'Unplayable count:', unplayablecount | 118 print 'Unplayable count:', unplayablecount |
113 | 119 |
114 if __name__ == '__main__': | 120 if __name__ == '__main__': |
115 main() | 121 main() |