def jack_process_callback(nframes, arg):
try:
global jack_midi_in_port, jack_midi_in_data
# MIDI In
midi_in_buffer = jacklib.port_get_buffer(jack_midi_in_port, nframes)
event_count = jacklib.midi_get_event_count(midi_in_buffer)
if event_count > 0:
event = jacklib.jack_midi_event_t()
for i in range(event_count):
if jacklib.midi_event_get(jacklib.pointer(event), midi_in_buffer, i) == 0:
data = jacklib.translate_midi_event_buffer(event.buffer)
if len(data) == 1:
jack_midi_in_data.put_nowait((data[0], 0, 0))
elif len(data) == 2:
jack_midi_in_data.put_nowait((data[0], data[1], 0))
elif len(data) == 3:
jack_midi_in_data.put_nowait((data[0], data[1], data[2]))
if jack_midi_in_data.full():
break
del event
except Exception as e:
print e
return 0
def JackProcess(self,nframes,arg):
"""Main Jack Process Method"""
if not self.docapture.is_set():
## Copy input data
endframe = self.startframe + nframes
if endframe > self.iIa.size:
endframe = self.iIa.size
tsz = (endframe-self.startframe) * ctypes.sizeof(jacklib.jack_default_audio_sample_t)
basei = self.startframe * ctypes.sizeof(jacklib.jack_default_audio_sample_t)
ctypes.memmove(self.iIa.ctypes.data+basei,jacklib.port_get_buffer(self.iI,nframes),tsz)
ctypes.memmove(self.iQa.ctypes.data+basei,jacklib.port_get_buffer(self.iQ,nframes),tsz)
ctypes.memmove(jacklib.port_get_buffer(self.oI,nframes),self.oIa.ctypes.data+basei,tsz)
ctypes.memmove(jacklib.port_get_buffer(self.oQ,nframes),self.oQa.ctypes.data+basei,tsz)
#print self.startframe,endframe,basei,tsz
self.startframe = endframe
if self.startframe >= self.iIa.size:
self.docapture.set()
return 0