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update play() for polyphony #3

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Merged
merged 1 commit into from
May 13, 2025
Merged

update play() for polyphony #3

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40 changes: 26 additions & 14 deletions adafruit_midi_parser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -676,21 +676,33 @@ def play(self, loop: Optional[bool] = None) -> bool: # noqa: PLR0912

current_time = time.monotonic()
if current_time - self._last_event_time >= self._next_event_delay:
event = self._parser.next_event
event = self._parser.current_event
if event:
if event["type"] == "note_on":
self.on_note_on(event["note"], event["velocity"], event["channel"])
elif event["type"] == "note_off":
self.on_note_off(event["note"], event["velocity"], event["channel"])
elif event["type"] == "tempo":
self.on_tempo_change(event["tempo"])
elif event["type"] == "controller":
self.on_controller(event["controller"], event["value"], event["channel"])
elif event["type"] == "program_change":
self.on_program_change(event["program"], event["channel"])
elif event["type"] == "end_of_track":
self.on_end_of_track(event["track"])
self._next_event_delay = self._parser.calculate_delay(event)
current_absolute_time = event["absolute"]
while (
self._parser.current_event
and self._parser.current_event["absolute"] == current_absolute_time
):
event = self._parser.next_event
if event["type"] == "note_on":
self.on_note_on(event["note"], event["velocity"], event["channel"])
elif event["type"] == "note_off":
self.on_note_off(event["note"], event["velocity"], event["channel"])
elif event["type"] == "tempo":
self.on_tempo_change(event["tempo"])
elif event["type"] == "controller":
self.on_controller(event["controller"], event["value"], event["channel"])
elif event["type"] == "program_change":
self.on_program_change(event["program"], event["channel"])
elif event["type"] == "end_of_track":
self.on_end_of_track(event["track"])
if self._parser.current_event:
time_diff = self._parser.current_event["absolute"] - current_absolute_time
self._next_event_delay = (time_diff / self._parser.ticks_per_beat) * (
self._parser.tempo / 1000000
)
else:
self._next_event_delay = 0.1
self._last_event_time = current_time
else:
self._playing = False
Expand Down