X-Git-Url: https://svn.cri.ensmp.fr/git/minwii.git/blobdiff_plain/300e41c1bf5fa8a5ff38db74396174a8f7f93bb7..a66a76adf2e817c69ad27f6568b5bad2929489e3:/src/songs/musicxmltosong.py?ds=sidebyside diff --git a/src/songs/musicxmltosong.py b/src/songs/musicxmltosong.py index 826363e..7eedf53 100755 --- a/src/songs/musicxmltosong.py +++ b/src/songs/musicxmltosong.py @@ -1,6 +1,6 @@ # -*- coding: utf-8 -*- """ -converstion d'un fichier musicxml en objet song minwii. +conversion d'un fichier musicxml en objet song minwii. $Id$ $URL$ @@ -22,6 +22,20 @@ DIATO_SCALE = {'C' : 60, 'A' : 69, 'B' : 71} +CHROM_SCALE = { 0 : ('C', 0), + 1 : ('C', 1), + 2 : ('D', 0), + 3 : ('E', -1), + 4 : ('E', 0), + 5 : ('F', 0), + 6 : ('F', 1), + 7 : ('G', 0), + 8 : ('G', 1), + 9 : ('A', 0), + 10 : ('B', -1), + 11 : ('B', 0)} + + FR_NOTES = {'C' : u'Do', 'D' : u'Ré', 'E' : u'Mi', @@ -41,6 +55,7 @@ class Part(object) : def __init__(self, node, autoDetectChorus=True) : self.node = node self.notes = [] + self.repeats = [] self._parseMusic() self.verses = [[]] self.chorus = [] @@ -50,25 +65,35 @@ class Part(object) : def _parseMusic(self) : divisions = 0 - noteIndex = 0 - next = previous = None + previous = None + for measureNode in self.node.getElementsByTagName('measure') : + measureNotes = [] + + # iteration sur les notes # divisions de la noire divisions = int(_getNodeValue(measureNode, 'attributes/divisions', divisions)) for noteNode in measureNode.getElementsByTagName('note') : note = Note(noteNode, divisions, previous) if not note.isRest : - self.notes.append(note) - try : - self.notes[noteIndex-1].next = note - except IndexError: - pass + measureNotes.append(note) + if previous : + previous.next = note else : previous.addDuration(note) continue - previous = note - noteIndex += 1 + self.notes.extend(measureNotes) + + # barres de reprises + try : + barlineNode = measureNode.getElementsByTagName('barline')[0] + except IndexError : + continue + + barline = Barline(barlineNode, measureNotes) + if barline.repeat : + self.repeats.append(barline) def _findChorus(self): """ le refrain correspond aux notes pour lesquelles @@ -97,9 +122,14 @@ class Part(object) : verse.append(self.notes[-1]) - def iterNotes(self) : + def iterNotes(self, indefinitely=True) : "exécution de la chanson avec l'alternance couplets / refrains" - for verse in self.verses : + print 'indefinitely', indefinitely + if indefinitely == False : + iterable = self.verses + else : + iterable = cycle(self.verses) + for verse in iterable : print "---partie---" repeats = len(verse[0].lyrics) if repeats > 1 : @@ -117,8 +147,8 @@ class Part(object) : yield note, 0 def pprint(self) : - for note, verseIndex in self.iterNotes() : - print note.nom, note.name, note.midi, note.duration, note.lyrics[verseIndex] + for note, verseIndex in self.iterNotes(indefinitely=False) : + print note, note.lyrics[verseIndex] def assignNotesFromMidiNoteNumbers(self): @@ -131,10 +161,85 @@ class Part(object) : noteInExtendedScale -= 1 self.notes.append(noteInExtendedScale) + +class Barline(object) : + + def __init__(self, node, measureNotes) : + self.node = node + location = self.location = node.getAttribute('location') or 'right' + try : + repeatN = node.getElementsByTagName('repeat')[0] + repeat = {'direction' : repeatN.getAttribute('direction'), + 'times' : int(repeatN.getAttribute('times') or 1)} + if location == 'left' : + repeat['note'] = measureNotes[0] + elif location == 'right' : + repeat['note'] = measureNotes[-1] + else : + raise ValueError(location) + self.repeat = repeat + except IndexError : + self.repeat = None + + def __str__(self) : + if self.repeat : + if self.location == 'left' : + return '|:' + elif self.location == 'right' : + return ':|' + return '|' + + __repr__ = __str__ + + +class Tone(object) : + + @staticmethod + def midi_to_step_alter_octave(midi): + stepIndex = midi % 12 + step, alter = CHROM_SCALE[stepIndex] + octave = midi / 12 - 1 + return step, alter, octave + + + def __init__(self, *args) : + if len(args) == 3 : + self.step, self.alter, self.octave = args + elif len(args) == 1 : + midi = args[0] + self.step, self.alter, self.octave = Tone.midi_to_step_alter_octave(midi) + + @property + def midi(self) : + mid = DIATO_SCALE[self.step] + mid = mid + (self.octave - OCTAVE_REF) * 12 + mid = mid + self.alter + return mid + + + @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 + + @property + def nom(self) : + name = FR_NOTES[self.step] + if self.alter < 0 : + alterext = 'b' + else : + alterext = '#' + name = '%s%s' % (name, abs(self.alter) * alterext) + return name -class Note(object) : +class Note(Tone) : scale = [55, 57, 59, 60, 62, 64, 65, 67, 69, 71, 72] def __init__(self, node, divisions, previous) : @@ -158,40 +263,46 @@ class Note(object) : self.previous = previous self.next = None + def __str__(self) : + return (u'%5s %2s %2d %4s' % (self.nom, self.name, self.midi, round(self.duration, 2))).encode('utf-8') + + def __repr__(self) : + return self.name.encode('utf-8') + def addDuration(self, note) : self._duration = self.duration + note.duration self.divisions = 1 - @property - def midi(self) : - mid = DIATO_SCALE[self.step] - mid = mid + (self.octave - OCTAVE_REF) * 12 - mid = mid + self.alter - return mid +# @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 - - @property - def nom(self) : - name = FR_NOTES[self.step] - if self.alter < 0 : - alterext = 'b' - else : - alterext = '#' - name = '%s%s' % (name, abs(self.alter) * alterext) - return name +# @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 +# +# @property +# def nom(self) : +# name = FR_NOTES[self.step] +# if self.alter < 0 : +# alterext = 'b' +# else : +# alterext = '#' +# name = '%s%s' % (name, abs(self.alter) * alterext) +# return name @property def column(self): @@ -212,9 +323,12 @@ class Lyric(object) : self.syllabic = _getNodeValue(node, 'syllabic', 'single') self.text = _getNodeValue(node, 'text') - def __str__(self) : + def syllabus(self, encoding='utf-8'): text = self._syllabicModifiers[self.syllabic] % self.text - return text.encode('utf-8') + return text.encode(encoding) + + def __str__(self) : + return self.syllabus() __repr__ = __str__ @@ -252,30 +366,9 @@ def musicXml2Song(input, partIndex=0, printNotes=False) : return part - # 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]" + usage = "%prog musicXmlFile.xml [options]" op = OptionParser(usage) op.add_option("-i", "--part-index", dest="partIndex" , default = 0