voicemeeter-api-python/voicemeeterlib/updater.py
2022-10-04 14:36:08 +01:00

49 lines
1.9 KiB
Python

import threading
import time
from .util import comp
class Updater(threading.Thread):
def __init__(self, remote):
super().__init__(name="updater", target=self.update, daemon=True)
self._remote = remote
self._remote._strip_comp = [False] * (
2 * self._remote.kind.phys_in + 8 * self._remote.kind.virt_in
)
self._remote._bus_comp = [False] * (self._remote.kind.num_bus * 8)
def _update_comps(self, strip_level, bus_level):
self._remote._strip_comp, self._remote._bus_comp = (
tuple(not x for x in comp(self._remote.cache["strip_level"], strip_level)),
tuple(not x for x in comp(self._remote.cache["bus_level"], bus_level)),
)
def update(self):
"""
Continously update observers of dirty states.
Generate _strip_comp, _bus_comp and update level cache if ldirty.
Runs updates at a rate of self.ratelimit.
"""
while self._remote.running:
start = time.time()
if self._remote.event.pdirty and self._remote.pdirty:
self._remote.subject.notify("pdirty")
if self._remote.event.mdirty and self._remote.mdirty:
self._remote.subject.notify("mdirty")
if self._remote.event.midi and self._remote.get_midi_message():
self._remote.subject.notify("midi")
if self._remote.event.ldirty and self._remote.ldirty:
self._update_comps(self._remote._strip_buf, self._remote._bus_buf)
self._remote.cache["strip_level"] = self._remote._strip_buf
self._remote.cache["bus_level"] = self._remote._bus_buf
self._remote.subject.notify("ldirty")
elapsed = time.time() - start
if self._remote.event.any() and self._remote.ratelimit - elapsed > 0:
time.sleep(self._remote.ratelimit - elapsed)
else:
time.sleep(0.1)