From: pin Date: Fri, 5 Feb 2010 19:12:30 +0000 (+0000) Subject: exécution de la chanson avec alternance couplets / refrains. X-Git-Url: https://scm.cri.mines-paristech.fr/git/minwii.git/commitdiff_plain/8d95e04bbc4a87d88159dd722260228157afe664 exécution de la chanson avec alternance couplets / refrains. git-svn-id: https://svn.cri.ensmp.fr/svn/minwii/trunk@8 fe552daf-6dbe-4428-90eb-1537e0879342 --- diff --git a/src/songs/musicxmltosong.py b/src/songs/musicxmltosong.py index 25822b3..00903a1 100755 --- a/src/songs/musicxmltosong.py +++ b/src/songs/musicxmltosong.py @@ -24,31 +24,79 @@ _marker = [] class Part(object) : - def __init__(self, node) : + 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)) - next = previous = None - for i, noteNode in enumerate(measureNode.getElementsByTagName('note')) : + for noteNode in measureNode.getElementsByTagName('note') : note = Note(noteNode, divisions, previous) self.notes.append(note) try : - self.notes[i-1].next = note + 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 in self.notes : - print note.name, note.midi, note.duration, note.lyrics - - + for note, verseIndex in self.iterNotes() : + print note.name, note.midi, note.duration, note.lyrics[verseIndex]