mirror of
https://github.com/onyx-and-iris/vban-cmd-python.git
synced 2024-11-15 17:10:46 +00:00
126 lines
4.9 KiB
Python
126 lines
4.9 KiB
Python
import socket
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import threading
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import time
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from typing import Optional
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from .error import VBANCMDError
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from .packet import HEADER_SIZE, SubscribeHeader, VbanRtPacket, VbanRtPacketHeader
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from .util import Socket
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class Subscriber(threading.Thread):
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"""fire a subscription packet every 10 seconds"""
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def __init__(self, remote):
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super().__init__(name="subscriber", target=self.subscribe, daemon=True)
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self._remote = remote
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self.packet = SubscribeHeader()
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def subscribe(self):
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while self._remote.running:
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try:
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self._remote.socks[Socket.register].sendto(
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self.packet.header,
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(socket.gethostbyname(self._remote.ip), self._remote.port),
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)
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count = int.from_bytes(self.packet.framecounter, "little") + 1
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self.packet.framecounter = count.to_bytes(4, "little")
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time.sleep(10)
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except socket.gaierror as e:
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err_msg = f"Unable to resolve hostname {self._remote.ip}"
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print(err_msg)
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raise VBANCMDError(err_msg)
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class Updater(threading.Thread):
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"""
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continously updates the public packet
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notifies observers of event updates
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"""
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def __init__(self, remote):
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super().__init__(name="updater", target=self.update, daemon=True)
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self._remote = remote
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self._remote.socks[Socket.response].settimeout(5)
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self._remote.socks[Socket.response].bind(
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(socket.gethostbyname(socket.gethostname()), self._remote.port)
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)
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self.packet_expected = VbanRtPacketHeader()
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self._remote._public_packet = self._get_rt()
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def _fetch_rt_packet(self) -> Optional[VbanRtPacket]:
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try:
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data, _ = self._remote.socks[Socket.response].recvfrom(2048)
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# check for packet data
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if len(data) > HEADER_SIZE:
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# check if packet is of type rt packet response
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if self.packet_expected.header == data[: HEADER_SIZE - 4]:
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return VbanRtPacket(
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_voicemeeterType=data[28:29],
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_reserved=data[29:30],
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_buffersize=data[30:32],
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_voicemeeterVersion=data[32:36],
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_optionBits=data[36:40],
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_samplerate=data[40:44],
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_inputLeveldB100=data[44:112],
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_outputLeveldB100=data[112:240],
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_TransportBit=data[240:244],
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_stripState=data[244:276],
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_busState=data[276:308],
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_stripGaindB100Layer1=data[308:324],
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_stripGaindB100Layer2=data[324:340],
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_stripGaindB100Layer3=data[340:356],
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_stripGaindB100Layer4=data[356:372],
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_stripGaindB100Layer5=data[372:388],
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_stripGaindB100Layer6=data[388:404],
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_stripGaindB100Layer7=data[404:420],
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_stripGaindB100Layer8=data[420:436],
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_busGaindB100=data[436:452],
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_stripLabelUTF8c60=data[452:932],
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_busLabelUTF8c60=data[932:1412],
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)
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except TimeoutError as e:
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err_msg = f"Unable to establish connection with {self._remote.ip}"
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print(err_msg)
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raise VBANCMDError(err_msg)
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def _get_rt(self) -> VbanRtPacket:
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"""Attempt to fetch data packet until a valid one found"""
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def fget():
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data = False
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while not data:
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data = self._fetch_rt_packet()
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time.sleep(self._remote.DELAY)
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return data
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return fget()
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def update(self):
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print(f"Listening for {', '.join(self._remote.event.get())} events")
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(
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self._remote.cache["strip_level"],
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self._remote.cache["bus_level"],
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) = self._remote._get_levels(self._remote.public_packet)
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while self._remote.running:
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start = time.time()
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_pp = self._get_rt()
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self._remote._strip_buf, self._remote._bus_buf = self._remote._get_levels(
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_pp
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)
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self._remote._pdirty = _pp.pdirty(self._remote.public_packet)
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if self._remote.event.ldirty and self._remote.ldirty:
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self._remote.cache["strip_level"] = self._remote._strip_buf
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self._remote.cache["bus_level"] = self._remote._bus_buf
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self._remote.subject.notify("ldirty")
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if self._remote.public_packet != _pp:
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self._remote._public_packet = _pp
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if self._remote.event.pdirty and self._remote.pdirty:
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self._remote.subject.notify("pdirty")
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elapsed = time.time() - start
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if self._remote.ratelimit - elapsed > 0:
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time.sleep(self._remote.ratelimit - elapsed)
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