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| @@ -1,11 +1,12 @@ | |||
| 1 | # -*- encoding: utf8 -*- | 1 | # -*- encoding: utf8 -*- |
| 2 | 2 | ||
| 3 | def note2midi(note): | 3 | def note2midi(note): |
| 4 | " convert a note name to a midi note value " | 4 | " convert note name to midi note number, e.g. [C-1, G9] -> [0, 127] " |
| 5 | # from C-2 to G8, though we do accept everything in the upper octave | ||
| 6 | _valid_notenames = {'C': 0, 'D': 2, 'E': 4, 'F': 5, 'G': 7, 'A': 9, 'B': 11} | 5 | _valid_notenames = {'C': 0, 'D': 2, 'E': 4, 'F': 5, 'G': 7, 'A': 9, 'B': 11} |
| 7 | _valid_modifiers = {None: 0, u'♮': 0, '#': +1, u'♯': +1, u'\udd2a': +2, 'b': -1, u'♭': -1, u'\ufffd': -2} | 6 | _valid_modifiers = {None: 0, u'♮': 0, '#': +1, u'♯': +1, u'\udd2a': +2, 'b': -1, u'♭': -1, u'\ufffd': -2} |
| 8 | _valid_octaves = range(-1, 10) | 7 | _valid_octaves = range(-1, 10) |
| 8 | if type(note) not in (str, unicode): | ||
| 9 | raise TypeError, "a string is required, got %s" % note | ||
| 9 | if not (1 < len(note) < 5): | 10 | if not (1 < len(note) < 5): |
| 10 | raise ValueError, "string of 2 to 4 characters expected, got %d (%s)" % (len(note), note) | 11 | raise ValueError, "string of 2 to 4 characters expected, got %d (%s)" % (len(note), note) |
| 11 | notename, modifier, octave = [None]*3 | 12 | notename, modifier, octave = [None]*3 |