+++ /dev/null
-# -*- coding: utf-8 -*-
-"""
-converstion d'un fichier musicxml en objet song minwii.
-
-$Id$
-$URL$
-"""
-import sys
-from types import StringTypes
-from xml.dom.minidom import parse
-from optparse import OptionParser
-from Song import Song
-
-# Do4 <=> midi 60
-OCTAVE_REF = 4
-DIATO_SCALE = {'C' : 60,
- 'D' : 62,
- 'E' : 64,
- 'F' : 65,
- 'G' : 67,
- 'A' : 69,
- 'B' : 71}
-_marker = []
-
-class Part(object) :
-
- def __init__(self, node, autoDetectChorus=True) :
- self.node = node
- self.notes = []
- self._parseMusic()
- self.verses = [[]]
- self.chorus = []
- if autoDetectChorus :
- self._findChorus()
- self._findVersesLoops()
-
- def _parseMusic(self) :
- divisions = 0
- noteIndex = 0
- next = previous = None
- for measureNode in self.node.getElementsByTagName('measure') :
- # divisions de la noire
- divisions = int(_getNodeValue(measureNode, 'attributes/divisions', divisions))
- for noteNode in measureNode.getElementsByTagName('note') :
- note = Note(noteNode, divisions, previous)
- self.notes.append(note)
- try :
- self.notes[noteIndex-1].next = note
- except IndexError:
- pass
- previous = note
- noteIndex += 1
-
- def _findChorus(self):
- """ le refrain correspond aux notes pour lesquelles
- il n'existe q'une seule syllable attachée.
- """
- start = stop = None
- for i, note in enumerate(self.notes) :
- ll = len(note.lyrics)
- if start is None and ll == 1 :
- start = i
- elif start is not None and ll > 1 :
- stop = i
- break
- self.chorus = self.notes[start:stop]
-
- def _findVersesLoops(self) :
- "recherche des couplets / boucles"
- verse = self.verses[0]
- for note in self.notes[:-1] :
- verse.append(note)
- ll = len(note.lyrics)
- nll = len(note.next.lyrics)
- if ll != nll :
- verse = []
- self.verses.append(verse)
- verse.append(self.notes[-1])
-
-
- def iterNotes(self) :
- "exécution de la chanson avec l'alternance couplets / refrains"
- for verse in self.verses :
- repeats = len(verse[0].lyrics)
- if repeats > 1 :
- for i in range(repeats) :
- # couplet
- for note in verse :
- yield note, i
- # refrain
- for note in self.chorus :
- yield note, 0
- else :
- for note in verse :
- yield note, 0
-
- def pprint(self) :
- for note, verseIndex in self.iterNotes() :
- print note.name, note.midi, note.duration, note.lyrics[verseIndex]
-
-
-
-class Note(object) :
- def __init__(self, node, divisions, previous) :
- self.node = node
- self.step = _getNodeValue(node, 'pitch/step')
- self.octave = int(_getNodeValue(node, 'pitch/octave'))
- self.alter = int(_getNodeValue(node, 'pitch/alter', 0))
- self._duration = float(_getNodeValue(node, 'duration'))
- self.lyrics = []
- for ly in node.getElementsByTagName('lyric') :
- self.lyrics.append(Lyric(ly))
-
- self.divisions = divisions
- self.previous = previous
- self.next = None
-
- @property
- def midi(self) :
- mid = DIATO_SCALE[self.step]
- mid = mid + (self.octave - OCTAVE_REF) * 12
- mid = mid + self.alter
- return mid
-
- @property
- def duration(self) :
- return self._duration / self.divisions
-
- @property
- def name(self) :
- name = '%s%d' % (self.step, self.octave)
- if self.alter < 0 :
- alterext = 'b'
- else :
- alterext = '#'
- name = '%s%s' % (name, abs(self.alter) * alterext)
- return name
-
-
-class Lyric(object) :
- def __init__(self, node) :
- self.node = node
- self.syllabic = _getNodeValue(node, 'syllabic', 'single')
- self.text = _getNodeValue(node, 'text')
-
- def __str__(self) :
- return self.text.encode('utf-8')
- __repr__ = __str__
-
-
-
-
-def _getNodeValue(node, path, default=_marker) :
- try :
- for name in path.split('/') :
- node = node.getElementsByTagName(name)[0]
- return node.firstChild.nodeValue
- except :
- if default is _marker :
- raise
- else :
- return default
-
-def musicXml2Song(input, output, partIndex=0, printNotes=False) :
- if isinstance(input, StringTypes) :
- input = open(input, 'r')
-
- d = parse(input)
- doc = d.documentElement
-
- # TODO conversion préalable score-timewise -> score-partwise
- assert doc.nodeName == u'score-partwise'
-
- parts = doc.getElementsByTagName('part')
- leadPart = parts[partIndex]
-
- part = Part(leadPart)
-
- if printNotes :
- part.pprint()
-
- # divisions de la noire
-# divisions = 0
-# midiNotes, durations, lyrics = [], [], []
-#
-# for measureNode in leadPart.getElementsByTagName('measure') :
-# divisions = int(_getNodeValue(measureNode, 'attributes/divisions', divisions))
-# for noteNode in measureNode.getElementsByTagName('note') :
-# note = Note(noteNode, divisions)
-# if printNotes :
-# print note.name, note.midi, note.duration, note.lyric
-# midiNotes.append(note.midi)
-# durations.append(note.duration)
-# lyrics.append(note.lyric)
-#
-# song = Song(None,
-# midiNoteNumbers = midiNotes,
-# noteLengths = durations,
-# lyrics = lyrics,
-# notesInExtendedScale=None)
-# song.save(output)
-
-
-def main() :
- usage = "%prog musicXmlFile.xml outputSongFile.smwi [options]"
- op = OptionParser(usage)
- op.add_option("-i", "--part-index", dest="partIndex"
- , default = 0
- , help = "Index de la partie qui contient le champ.")
- op.add_option("-p", '--print', dest='printNotes'
- , action="store_true"
- , default = False
- , help = "Affiche les notes sur la sortie standard (debug)")
-
- options, args = op.parse_args()
-
- if len(args) != 2 :
- raise SystemExit(op.format_help())
-
- musicXml2Song(args[0], args[1], partIndex=options.partIndex, printNotes=options.printNotes)
-
-
-
-if __name__ == '__main__' :
- sys.exit(main())
projects / minwii.git / blobdiff