Mercurial > ~darius > hgwebdir.cgi > musiccutter

changeset 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
files musiccutter.py
diffstat 1 files changed, 9 insertions(+), 8 deletions(-) [+]
line wrap: on
line diff
--- a/musiccutter.py	Tue Apr 26 21:35:54 2016 +0930
+++ b/musiccutter.py	Fri Apr 29 15:57:32 2016 +0930
@@ -18,13 +18,13 @@
         filename = 'test.midi'
     # Card layout from http://www.orgues-de-barbarie.com/wp-content/uploads/2014/09/format-cartons.pdf
     # Notes are read from right to left
-    m = Midi2PDF('notes', 120, 155, 5.5, 3.0, 6.0, 50, False, False, False, False, 10, 'Helvetica', 12)
+    m = Midi2PDF('notes', 120, 155, 5.5, 3.0, 6.0, 50, False, False, False, False, 12, 10, 'Helvetica', 12)
     base, ext = os.path.splitext(filename)
     m.processMidi(filename, base + '-%02d.pdf')
 
 class Midi2PDF(object):
-    def __init__(self, notefile, pagewidth, pageheight, pitch, slotsize, offset, leadin, timemarks, drawrect, notenames, notelines, timescale, fontname, fontsize):
-        self.midi2note, self.note2midi = Midi2PDF.genmidi2note()
+    def __init__(self, notefile, pagewidth, pageheight, pitch, slotsize, offset, leadin, timemarks, drawrect, notenames, notelines, noteoffset, timescale, fontname, fontsize):
+        self.midi2note, self.note2midi = Midi2PDF.genmidi2note(noteoffset)
         self.note2slot, self.slot2note = Midi2PDF.loadnote2slot(notefile, self.note2midi)
         self.pagewidth = pagewidth # Dimensions are in millimetres
         self.pageheight = pageheight
@@ -75,7 +75,7 @@
                         print 'note_off with no corresponding note_on for channel %d note %d' % (ev.channel, ev.note)
                     else:
                         if note not in self.note2slot:
-                            print 'Skipping unplayable note %s' % (note)
+                            print 'Skipping unplayable note %d (%s)' % (ev.note, note)
                             unplayablecount += 1
                         else:
                             start = channels[ev.channel][ev.note]
@@ -135,8 +135,9 @@
 
     # http://newt.phys.unsw.edu.au/jw/notes.html
     @staticmethod
-    def genmidi2note():
-        '''Create forward & reverse tables for midi number to note name (assuming 69 = A4 = A440)'''
+    def genmidi2note(offset):
+        '''Create forward & reverse tables for midi number to note name (assuming 69 = A4 = A440)
+offset is amount to shift notes (+12 = +1 octave)'''
         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']
         midi2note = {}
         note2midi = {}
@@ -144,8 +145,8 @@
             octave = midi / len(names) - 1
             index = midi % len(names)
             name = names[index] % (octave)
-            midi2note[midi] = name
-            note2midi[name] = midi
+            midi2note[midi - offset] = name
+            note2midi[name] = midi - offset
 
         return midi2note, note2midi