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comparison musiccutter.py @ 21:c710c4c3f44f

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Add pitch offset (number of midi notes to move up/down)
author Daniel O'Connor <darius@dons.net.au>
date Fri, 29 Apr 2016 15:57:32 +0930
parents 9bb72ae63651
children 65e8298f5800
comparison
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20:9bb72ae63651 21:c710c4c3f44f
16 def test(filename = None): 16 def test(filename = None):
17 if filename == None: 17 if filename == None:
18 filename = 'test.midi' 18 filename = 'test.midi'
19 # Card layout from http://www.orgues-de-barbarie.com/wp-content/uploads/2014/09/format-cartons.pdf 19 # Card layout from http://www.orgues-de-barbarie.com/wp-content/uploads/2014/09/format-cartons.pdf
20 # Notes are read from right to left 20 # Notes are read from right to left
21 m = Midi2PDF('notes', 120, 155, 5.5, 3.0, 6.0, 50, False, False, False, False, 10, 'Helvetica', 12) 21 m = Midi2PDF('notes', 120, 155, 5.5, 3.0, 6.0, 50, False, False, False, False, 12, 10, 'Helvetica', 12)
22 base, ext = os.path.splitext(filename) 22 base, ext = os.path.splitext(filename)
23 m.processMidi(filename, base + '-%02d.pdf') 23 m.processMidi(filename, base + '-%02d.pdf')
24 24
25 class Midi2PDF(object): 25 class Midi2PDF(object):
26 def __init__(self, notefile, pagewidth, pageheight, pitch, slotsize, offset, leadin, timemarks, drawrect, notenames, notelines, timescale, fontname, fontsize): 26 def __init__(self, notefile, pagewidth, pageheight, pitch, slotsize, offset, leadin, timemarks, drawrect, notenames, notelines, noteoffset, timescale, fontname, fontsize):
27 self.midi2note, self.note2midi = Midi2PDF.genmidi2note() 27 self.midi2note, self.note2midi = Midi2PDF.genmidi2note(noteoffset)
28 self.note2slot, self.slot2note = Midi2PDF.loadnote2slot(notefile, self.note2midi) 28 self.note2slot, self.slot2note = Midi2PDF.loadnote2slot(notefile, self.note2midi)
29 self.pagewidth = pagewidth # Dimensions are in millimetres 29 self.pagewidth = pagewidth # Dimensions are in millimetres
30 self.pageheight = pageheight 30 self.pageheight = pageheight
31 self.pitch = pitch # Distance between each slot 31 self.pitch = pitch # Distance between each slot
32 self.slotsize = slotsize # Size of each slot cut out 32 self.slotsize = slotsize # Size of each slot cut out
73 elif ev.type == 'note_off' or (ev.type == 'note_on' and ev.velocity == 0): 73 elif ev.type == 'note_off' or (ev.type == 'note_on' and ev.velocity == 0):
74 if ev.note not in channels[ev.channel]: 74 if ev.note not in channels[ev.channel]:
75 print 'note_off with no corresponding note_on for channel %d note %d' % (ev.channel, ev.note) 75 print 'note_off with no corresponding note_on for channel %d note %d' % (ev.channel, ev.note)
76 else: 76 else:
77 if note not in self.note2slot: 77 if note not in self.note2slot:
78 print 'Skipping unplayable note %s' % (note) 78 print 'Skipping unplayable note %d (%s)' % (ev.note, note)
79 unplayablecount += 1 79 unplayablecount += 1
80 else: 80 else:
81 start = channels[ev.channel][ev.note] 81 start = channels[ev.channel][ev.note]
82 notelen = ctime - start 82 notelen = ctime - start
83 slot = self.note2slot[note] 83 slot = self.note2slot[note]
133 Midi2PDF.textHelper(pdf, (self.pagewidth - 10) * mm, ofs + 1 * mm, ENGRAVE_COLOUR, False, self.fontname, self.fontsize, self.slot2note[slot]) 133 Midi2PDF.textHelper(pdf, (self.pagewidth - 10) * mm, ofs + 1 * mm, ENGRAVE_COLOUR, False, self.fontname, self.fontsize, self.slot2note[slot])
134 pdf.save() 134 pdf.save()
135 135
136 # http://newt.phys.unsw.edu.au/jw/notes.html 136 # http://newt.phys.unsw.edu.au/jw/notes.html
137 @staticmethod 137 @staticmethod
138 def genmidi2note(): 138 def genmidi2note(offset):
139 '''Create forward & reverse tables for midi number to note name (assuming 69 = A4 = A440)''' 139 '''Create forward & reverse tables for midi number to note name (assuming 69 = A4 = A440)
140 offset is amount to shift notes (+12 = +1 octave)'''
140 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'] 141 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']
141 midi2note = {} 142 midi2note = {}
142 note2midi = {} 143 note2midi = {}
143 for midi in range(21, 128): 144 for midi in range(21, 128):
144 octave = midi / len(names) - 1 145 octave = midi / len(names) - 1
145 index = midi % len(names) 146 index = midi % len(names)
146 name = names[index] % (octave) 147 name = names[index] % (octave)
147 midi2note[midi] = name 148 midi2note[midi - offset] = name
148 note2midi[name] = midi 149 note2midi[name] = midi - offset
149 150
150 return midi2note, note2midi 151 return midi2note, note2midi
151 152
152 @staticmethod 153 @staticmethod
153 def loadnote2slot(fname, note2midi): 154 def loadnote2slot(fname, note2midi):