Python musicalpitch.MusicalPitch类代码示例

 def test_contructor(self):
     Note(MusicalPitch.new_from_notename("c'"),
          Duration.new_from_string("4."))
     self.assertRaises(AssertionError,
                       Note, "4.", MusicalPitch.new_from_notename("c'"))
     self.assertRaises(AssertionError,
                       Note, Duration.new_from_string("4."), "c'")

 def test_add_d5(self):
     a = MusicalPitch.new_from_notename("b")
     b = Interval("-d5")
     self.assertEquals((a+b).get_octave_notename(), "eis")
     a = MusicalPitch.new_from_notename("bis")
     b = Interval("-d5")
     self.assertEquals((a+b).get_octave_notename(), "eisis")
     a = MusicalPitch.new_from_notename("bisis")
     b = Interval("-d5")
     self.assertEquals((a+b).get_octave_notename(), "fisis")

 def test_tuplets(self):
     n1 = Note(MusicalPitch.new_from_notename("g'"),
               Duration(8, 0, Rat(2, 3)))
     n2 = Note(MusicalPitch.new_from_notename("g'"),
               Duration(8, 0, Rat(2, 3)))
     n3 = Note(MusicalPitch.new_from_notename("g'"),
               Duration(8, 0, Rat(2, 3)))
     self.score.voice11.append(n1)
     self.score.voice11.append(n2)
     self.score.voice11.append(n3)
     self.score.voice11.tuplet(Rat(2, 3), const.UP, [n1, n2, n3])

def question(f, b, c):
    low = 60
    tone_a = MusicalPitch.new_from_int(low)
    tone_b = MusicalPitch.new_from_int(low + b)
    tone_c = MusicalPitch.new_from_int(low + c)
    print >> f, 'question {'
    print >> f, '  question_text = _("Sing the three tones")'
    print >> f, '  music = voice("< %s2 %s %s >")' % (
        (tone_a.get_octave_notename(),
         tone_b.get_octave_notename(),
         tone_c.get_octave_notename()))
    print >> f, '  answer = voice("%s8 %s %s")' % (
        (tone_a.get_octave_notename(),
         tone_b.get_octave_notename(),
         tone_c.get_octave_notename()))
    print >> f, '}'

def question(f, b, c):
    low = 60
    tone_a = MusicalPitch.new_from_int(low)
    tone_b = MusicalPitch.new_from_int(low + b)
    tone_c = MusicalPitch.new_from_int(low + c)
    f.write('question {\n')
    f.write('  question_text = _("Sing the three tones")\n')
    f.write('  music = voice("< %s2 %s %s >")\n' % (
        (tone_a.get_octave_notename(),
         tone_b.get_octave_notename(),
         tone_c.get_octave_notename())))
    f.write('  answer = voice("%s8 %s %s")\n' % (
        (tone_a.get_octave_notename(),
         tone_b.get_octave_notename(),
         tone_c.get_octave_notename())))
    f.write('}\n')

 def test_bar_fill_skips(self):
     n1 = Note(MusicalPitch.new_from_notename("g'"),
               Duration(4, 0))
     self.score.voice11.append(n1)
     self.score.voice11.append(Rest(Duration.new_from_string("4")))
     self.bp.fill_skips()
     self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(0, 1)]['elem'][0], Note))
     self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(1, 4)]['elem'][0], Rest))
     self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(1, 2)]['elem'][0], Skip))
     self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(3, 4)]['elem'][0], Skip))

 def new_from_string(string):
     s = string.strip()
     m = re_melodic.match(s)
     if m.end() < len(s) - 1:
         # FIXME: raise ValueError like rest
         raise Note.Exception("characters left in string", string)
     return Note(
         MusicalPitch.new_from_notename("%s%s" % (m.group('notename'),
                                                  m.group('octave'))),
         Duration.new_from_string("%s%s" % (m.group('len'), m.group('dots')))
     )

 def test_normalize_double_accidental(self):
     for a, b in (("c", "c"),
                  ("cisis", "d"),
                  ("disis", "e"),
                  ("eisis", "fis"),
                  ("fisis", "g"),
                  ("gisis", "a"),
                  ("aisis", "b"),
                  ("bisis", "cis'"),
                  ("ceses", "bes,"),
                  ("deses", "c"),
                  ("eses", "d"),
                  ("feses", "ees"),
                  ("geses", "f"),
                  ("ases", "g"),
                  ("beses", "a"),
                  ):
         n = MusicalPitch.new_from_notename(a)
         n.normalize_double_accidental()
         self.assertEquals(n.get_octave_notename(), b)

 def refill_accidentals_info(self, key):
     """Fill the .m_accidentals_info dict with the accidentals
     that exist in the key signature `key`.
     """
     self.m_accidentals_info = {}
     for step in range(MusicalPitch.LOWEST_STEPS, MusicalPitch.HIGHEST_STEPS + 1):
         self.m_accidentals_info[step] = 0
     for a in mpdutils.key_to_accidentals(key):
         n = MusicalPitch.new_from_notename(a)
         for octave in range(-4, 7):
             n.m_octave_i = octave
             if n.semitone_pitch() < 128:
                 if a[-4:] == 'eses':
                     self.m_accidentals_info[n.steps()] = -2
                 elif a[-2:] == 'es':
                     self.m_accidentals_info[n.steps()] = -1
                 elif a[-4:] == 'isis':
                     self.m_accidentals_info[n.steps()] = 2
                 else:
                     self.m_accidentals_info[n.steps()] = 1

 def test_pitch_class(self):
     for n, i in (("c", 0), ("cis", 1), ("g", 7), ("ges", 6), ("gisis", 9),
             ("b", 11), ("bis", 0), ("bisis", 1), ("ces", 11)):
         p = MusicalPitch.new_from_notename(n)
         self.assertEquals(p.pitch_class(), i)

 def test_trans(self):
     gettext.translation('solfege', './share/locale/', languages=['nb_NO']).install()
     n = MusicalPitch.new_from_notename("b,,")
     self.assertEquals(n.get_octave_notename(), "b,,")
     self.assertEquals(n.get_user_octave_notename(), "<sub>1</sub>H")
     self.assertEquals(n.get_user_notename(), "h")

def parse_to_score_object(music):
    lexer = Lexer(music)
    relative_mode = None
    relto = None
    transpose_pitch = None
    TOPLEVEL = 1#'toplevel'
    NOTES = 2#'notes'
    START_OF_CHORD = 3#'start-of-chord'
    CHORD = 4#'chord'
    context = TOPLEVEL
    score = elems.Score()
    chord_duration = None
    cur_duration = Duration(4, 0)
    tie_is_in_the_air = 0
    beam = None
    # None when not parsing notes in a tuplet. Item 0 is the ration and 1.. is the notes
    times = None
    cur_staff = None
    # This variable is set to the duration of the pickup bar from we parse
    # \partial nn until the bar has been created.
    partial = None
    for toc, toc_data in lexer:
        try:
            if toc_data.m_duration:
                cur_duration = toc_data.m_duration.clone()
        except AttributeError:
            pass
        if toc == Lexer.STAFF:
            assert context == TOPLEVEL
            cur_staff = score.add_staff(elems.Staff)
            cur_voice = cur_staff.m_voices[-1]
            stem_dir = const.BOTH
            tuplet_dir = const.BOTH
            relative_mode = None
            timepos = Rat(0)
            last_pos = timepos
        elif toc == Lexer.RHYTHMSTAFF:
            assert context == TOPLEVEL
            cur_staff = score.add_staff(elems.RhythmStaff)
            cur_voice = cur_staff.m_voices[-1]
            stem_dir = const.BOTH
            tuplet_dir = const.BOTH
            relative_mode = None
            timepos = Rat(0)
            last_pos = timepos
        elif toc == Lexer.VOICE:
            if not cur_staff:
                raise ParseError("Don't use \\addvoice before \\staff", lexer)
            relative_mode = None
            timepos = Rat(0)
            cur_voice = cur_staff.add_voice()
        elif toc == Lexer.RELATIVE:
            assert not relative_mode
            relative_mode = 1
            relto = toc_data
        elif toc == Lexer.TRANSPOSE:
            transpose_pitch = toc_data
        elif toc == Lexer.PARTIAL:
            partial = toc_data
        elif toc == Lexer.TIME:
            if not cur_staff:
                raise ParseError(u"\\time can not be used before \\staff", lexer)
            # FIXME
            # Also now, we only allow the first voice to change time signatures
            if cur_staff.m_voices.index(cur_voice) != 0:
                raise ParseError(u"only timesig in first voice", lexer)
            # FIXME: we are stricter with time signatures that both solfege 3.16
            # and LilyPond
            if not cur_voice.is_bar_full():
                raise ParseError(u"timesig change only when bar is full!", lexer)
            if partial:
                score.add_partial_bar(partial, toc_data)
                partial = None
            else:
                score.add_bar(toc_data)
        elif toc == Lexer.KEY:
            p = MusicalPitch.new_from_notename(toc_data[0])
            if transpose_pitch:
                p.transpose_by_musicalpitch(transpose_pitch)
            k = (p.get_notename(), toc_data[1])
            if not cur_staff:
                raise ParseError(u"\\key can not be used before \\staff", lexer)
            cur_staff.set_key_signature(k, timepos)
        elif toc == Lexer.TIMES:
            if not times:
                times = [toc_data]
            else:
                raise ParseError(r"\times nn/nn does not nest", lexer)
        elif toc == Lexer.CLEF:
            try:
                cur_staff.set_clef(toc_data, timepos)
            except elems.UnknownClefException, e:
                e.m_lineno, e.m_linepos1, e.m_linepos2 = lexer.get_error_location()
                raise
        elif toc == '|':
            if timepos != score.get_bar_at(last_pos).end():
                logging.warning("Bar check failed at %s", timepos)

def int_to_user_octave_notename(i):
    return MusicalPitch.new_from_int(i).get_user_octave_notename()

 def notename_to_ylinepos(n):
     n = MusicalPitch.new_from_notename(n)
     return self.steps_to_ylinepos(n.steps())

def int_to_user_notename(i):
    p = MusicalPitch()
    p.set_from_int(i)
    return p.get_user_octave_notename()