def _run_scenes_impl(self, scenes, events):
# set up a dummy engine
setup._config_impl(backend='dummy')
e = engine.Engine()
e.setup(scenes, None, None, None)
r = []
# allow input to be a single event, as well as a sequence of events
if not misc.issequence(events):
events = [events]
# process each event, append each list of output events to the
# returned list of lists
for ev in events:
ret = e.process_event(ev)[:]
for rev in ret:
rev.__class__ = MidiEvent
r.append(ret)
return r
def _run_scenes_impl(self, scenes, events):
# set up a dummy engine
setup._config_impl(backend='dummy')
e = engine.Engine()
e.setup(scenes, None, None, None)
r = []
# allow input to be a single event, as well as a sequence of events
if not misc.issequence(events):
events = [events]
# process each event, append each list of output events to the
# returned list of lists
for ev in events:
ret = e.process_event(ev)[:]
for rev in ret:
rev.__class__ = MidiEvent
r.append(ret)
return r
def process_file(infile, outfile, patch):
"""
Process a MIDI file, using pysmf.
"""
import smf
# create dummy engine with no inputs or outputs
_setup._config_impl(backend='dummy')
engine = Engine()
engine.setup({_util.offset(0): patch}, None, None, None)
# open input file
smf_in = smf.SMF(infile)
# create SMF object with same ppqn and number of tracks as input file
smf_out = smf.SMF()
smf_out.ppqn = smf_in.ppqn
for n in range(len(smf_in.tracks)):
smf_out.add_track()
for smf_ev in smf_in.events:
if smf_ev.midi_buffer[0] == 0xff:
# event is metadata. copy to output unmodified
smf_out.add_event(smf.Event(smf_ev.midi_buffer),
smf_ev.track_number,
pulses=smf_ev.time_pulses)
else:
ev = _mididings.buffer_to_midi_event(smf_ev.midi_buffer,
smf_ev.track_number,
smf_ev.time_pulses)
# use base class version of process_event() to bypass calling
# ev._finalize(), which would fail since ev is of type
# _mididings.MidiEvent.
for out_ev in _mididings.Engine.process_event(engine, ev):
buf, track, pulses = _mididings.midi_event_to_buffer(out_ev)
smf_out.add_event(smf.Event(buf), track, pulses=pulses)
smf_out.save(outfile)
def process_file(infile, outfile, patch):
"""
Process a MIDI file, using pysmf.
"""
import smf
# create dummy engine with no inputs or outputs
_setup._config_impl(backend='dummy')
engine = Engine()
engine.setup({_util.offset(0): patch}, None, None, None)
# open input file
smf_in = smf.SMF(infile)
# create SMF object with same ppqn and number of tracks as input file
smf_out = smf.SMF()
smf_out.ppqn = smf_in.ppqn
for n in range(len(smf_in.tracks)):
smf_out.add_track()
for smf_ev in smf_in.events:
if smf_ev.midi_buffer[0] == 0xff:
# event is metadata. copy to output unmodified
smf_out.add_event(smf.Event(smf_ev.midi_buffer),
smf_ev.track_number, pulses=smf_ev.time_pulses)
else:
ev = _mididings.buffer_to_midi_event(smf_ev.midi_buffer,
smf_ev.track_number, smf_ev.time_pulses)
# use base class version of process_event() to bypass calling
# ev._finalize(), which would fail since ev is of type
# _mididings.MidiEvent.
for out_ev in _mididings.Engine.process_event(engine, ev):
buf, track, pulses = _mididings.midi_event_to_buffer(out_ev)
smf_out.add_event(smf.Event(buf), track, pulses=pulses)
smf_out.save(outfile)
