src/songs/synth.py

   1 # -*- coding: utf-8 -*-
   2 """
   3 module pour jouer les chansons sur le fluidsynth
   4
   5 $Id$
   6 $URL$
   7 """
   8 import fluidsynth
   9 from musicxmltosong import musicXml2Song
  10 from time import sleep
  11 import sys
  12 from optparse import OptionParser
  13
  14 class SongPlayer(object) :
  15     """ Lecteur audio d'une chanson """
  16
  17     def __init__(self, part, soundFont, quarterNoteDuration=400, bank=0, preset=0) :
  18         self.part = part
  19         self.quarterNoteDuration = quarterNoteDuration
  20         self.fs = fs = fluidsynth.Synth()
  21         fs.start()
  22         self.fsid = fsid = fs.sfload(soundFont)
  23         fs.program_select(0, fsid, bank, preset)
  24
  25     def __del__(self) :
  26         self.fs.delete()
  27
  28     def play(self) :
  29         fs = self.fs
  30         for note, verseIndex in self.part.iterNotes(indefinitely=False) :
  31             print note, note.lyrics[verseIndex]
  32             fs.noteon(0, note.midi, 64)
  33             duration = note.duration * self.quarterNoteDuration / 1000
  34             sleep(duration)
  35             fs.noteoff(0, note.midi)
  36
  37
  38
  39
  40
  41 def main() :
  42     usage = "%prog musicXmlFile.xml [options]"
  43     op = OptionParser(usage)
  44     op.add_option("-i", "--part-index", dest="partIndex"
  45                  , default = 0
  46                  , help = "Index de la partie qui contient le champ.")
  47     op.add_option("-q", "--quarter-note-duration", dest="quarterNoteDuration"
  48                   , type="int", default=400
  49                   , help="Durée de la noire [default] (en millisecondes)"
  50                   )
  51     op.add_option("-b", "--bank", dest="bank"
  52                   , type="int", default="0"
  53                   , help="midi bank [default]")
  54     op.add_option("-p", "--preset", dest="preset"
  55                 , type="int", default="0"
  56                 , help="midi preset [default]")
  57
  58     options, args = op.parse_args()
  59
  60     if len(args) != 1 :
  61         raise SystemExit(op.format_help())
  62
  63     song = musicXml2Song(args[0], partIndex=options.partIndex)
  64     sp = SongPlayer(song,
  65                     '/Users/pinbe/dev/minwii/fluid-soundfont-3.1/FluidR3_GM.sf2',
  66                     quarterNoteDuration=options.quarterNoteDuration,
  67                     bank = options.bank,
  68                     preset = options.preset)
  69     sp.play()
  70
  71
  72 if __name__ == '__main__' :
  73     sys.exit(main())