def alloc_voice(self, chan, note):
"""
Return None if there are no available voices or
if
"""
if self.m_voices:
voice = self.m_voices.pop()
else:
return None
# first, if NOTE is already playing on channel CHAN, we need
# to stop it and free the voice used for that.
if note in self.m_channel_dict[chan]:
solfege_c_midi.seq_stop_note(self.m_devnum,
self.m_channel_dict[chan][note], note,
100)
self.free_voice(chan, note)
# the instrumnet we want the voice to use
p = self.m_channel_patches[chan]
if self.m_voice_patches[voice] != p:
# we need to set the patch for this voice
solfege_c_midi.seq_set_patch(self.m_devnum, voice, p)
self.m_voice_patches[voice] = p
assert note not in self.m_channel_dict[chan]
self.m_channel_dict[chan][note] = voice
return voice
def reset(self):
# list of available voices, number depends on the soundcard.
# AWE32 and GUS has 32, OPL3: 18, OPL2: 9
self.m_voices = list(range(self.m_num_voices))
# dictionary remembering what instrument we have set on the
# different channels. There are by definition NUM_CHANNELS channels
self.m_channel_patches = {}
for c in range(self.NUM_CHANNELS):
self.m_channel_patches[c] = 0
# dictionary remembering what instrument has been set for all
# the voices.
self.m_voice_patches = {}
for n in range(self.m_num_voices):
self.m_voice_patches[n] = 0
solfege_c_midi.seq_set_patch(self.m_devnum, n, 0)
#
self.m_channel_dict = {}
for x in range(self.NUM_CHANNELS):
self.m_channel_dict[x] = {}
def reset(self):
# list of available voices, number depends on the soundcard.
# AWE32 and GUS has 32, OPL3: 18, OPL2: 9
self.m_voices = list(range(self.m_num_voices))
# dictionary remembering what instrument we have set on the
# different channels. There are by definition NUM_CHANNELS channels
self.m_channel_patches = {}
for c in range(self.NUM_CHANNELS):
self.m_channel_patches[c] = 0
# dictionary remembering what instrument has been set for all
# the voices.
self.m_voice_patches = {}
for n in range(self.m_num_voices):
self.m_voice_patches[n] = 0
solfege_c_midi.seq_set_patch(self.m_devnum, n, 0)
#
self.m_channel_dict = {}
for x in range(self.NUM_CHANNELS):
self.m_channel_dict[x] = {}
def alloc_voice(self, chan, note):
"""
Return None if there are no available voices or
if
"""
if self.m_voices:
voice = self.m_voices.pop()
else:
return None
# first, if NOTE is already playing on channel CHAN, we need
# to stop it and free the voice used for that.
if note in self.m_channel_dict[chan]:
solfege_c_midi.seq_stop_note(self.m_devnum,
self.m_channel_dict[chan][note], note, 100)
self.free_voice(chan, note)
# the instrumnet we want the voice to use
p = self.m_channel_patches[chan]
if self.m_voice_patches[voice] != p:
# we need to set the patch for this voice
solfege_c_midi.seq_set_patch(self.m_devnum, voice, p)
self.m_voice_patches[voice] = p
assert note not in self.m_channel_dict[chan]
self.m_channel_dict[chan][note] = voice
return voice
