vban-cmd-python/vban_cmd/packet.py
onyx-and-iris a029011012 vbanrtpacket refactored
_generate_levels method added
ldirty method added.

moved initialize strip_level, bus_level cache into updater init()
initialize comps in updater init()
2022-10-04 15:39:56 +01:00

269 lines
8.5 KiB
Python

from dataclasses import dataclass
from typing import Generator
from .util import comp
VBAN_SERVICE_RTPACKETREGISTER = 32
VBAN_SERVICE_RTPACKET = 33
MAX_PACKET_SIZE = 1436
HEADER_SIZE = 4 + 1 + 1 + 1 + 1 + 16 + 4
@dataclass
class VbanRtPacket:
"""Represents the body of a VBAN RT data packet"""
def __init__(self, **kwargs):
for k, v in kwargs.items():
setattr(self, k, v)
self._strip_level = self._generate_levels(self._inputLeveldB100)
self._bus_level = self._generate_levels(self._outputLeveldB100)
def _generate_levels(self, levelarray) -> tuple:
return tuple(
int.from_bytes(levelarray[i : i + 2], "little")
for i in range(0, len(levelarray), 2)
)
def pdirty(self, other) -> bool:
"""True iff any defined parameter has changed"""
return not (
self._stripState == other._stripState
and self._busState == other._busState
and self._stripGaindB100Layer1 == other._stripGaindB100Layer1
and self._stripGaindB100Layer2 == other._stripGaindB100Layer2
and self._stripGaindB100Layer3 == other._stripGaindB100Layer3
and self._stripGaindB100Layer4 == other._stripGaindB100Layer4
and self._stripGaindB100Layer5 == other._stripGaindB100Layer5
and self._stripGaindB100Layer6 == other._stripGaindB100Layer6
and self._stripGaindB100Layer7 == other._stripGaindB100Layer7
and self._stripGaindB100Layer8 == other._stripGaindB100Layer8
and self._busGaindB100 == other._busGaindB100
and self._stripLabelUTF8c60 == other._stripLabelUTF8c60
and self._busLabelUTF8c60 == other._busLabelUTF8c60
)
def ldirty(self, strip_cache, bus_cache) -> bool:
self._strip_comp, self._bus_comp = (
tuple(not val for val in comp(strip_cache, self._strip_level)),
tuple(not val for val in comp(bus_cache, self._bus_level)),
)
return any(any(l) for l in (self._strip_comp, self._bus_comp))
@property
def voicemeetertype(self) -> str:
"""returns voicemeeter type as a string"""
type_ = ("basic", "banana", "potato")
return type_[int.from_bytes(self._voicemeeterType, "little") - 1]
@property
def voicemeeterversion(self) -> tuple:
"""returns voicemeeter version as a tuple"""
return tuple(
reversed(
tuple(
int.from_bytes(self._voicemeeterVersion[i : i + 1], "little")
for i in range(4)
)
)
)
@property
def samplerate(self) -> int:
"""returns samplerate as an int"""
return int.from_bytes(self._samplerate, "little")
@property
def inputlevels(self) -> tuple:
"""returns the entire level array across all inputs for a kind"""
return self._strip_level[0 : (2 * self._kind.phys_in + 8 * self._kind.virt_in)]
@property
def outputlevels(self) -> tuple:
"""returns the entire level array across all outputs for a kind"""
return self._bus_level[0 : 8 * self._kind.num_bus]
@property
def stripstate(self) -> tuple:
"""returns tuple of strip states accessable through bit modes"""
return tuple(self._stripState[i : i + 4] for i in range(0, 32, 4))
@property
def busstate(self) -> tuple:
"""returns tuple of bus states accessable through bit modes"""
return tuple(self._busState[i : i + 4] for i in range(0, 32, 4))
"""
these functions return an array of gainlayers[i] across all strips
ie stripgainlayer1 = [strip[0].gainlayer[0], strip[1].gainlayer[0], strip[2].gainlayer[0]...]
"""
@property
def stripgainlayer1(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer1[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def stripgainlayer2(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer2[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def stripgainlayer3(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer3[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def stripgainlayer4(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer4[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def stripgainlayer5(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer5[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def stripgainlayer6(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer6[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def stripgainlayer7(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer7[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def stripgainlayer8(self) -> tuple:
return tuple(
int.from_bytes(self._stripGaindB100Layer8[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def busgain(self) -> tuple:
"""returns tuple of bus gains"""
return tuple(
int.from_bytes(self._busGaindB100[i : i + 2], "little")
for i in range(0, 16, 2)
)
@property
def striplabels(self) -> tuple:
"""returns tuple of strip labels"""
return tuple(
self._stripLabelUTF8c60[i : i + 60].decode().split("\x00")[0]
for i in range(0, 480, 60)
)
@property
def buslabels(self) -> tuple:
"""returns tuple of bus labels"""
return tuple(
self._busLabelUTF8c60[i : i + 60].decode().split("\x00")[0]
for i in range(0, 480, 60)
)
@dataclass
class VbanRtPacketHeader:
"""Represents the header of VBAN RT data packet"""
name = "Voicemeeter-RTP"
vban: bytes = "VBAN".encode()
format_sr: bytes = (0x60).to_bytes(1, "little")
format_nbs: bytes = (0).to_bytes(1, "little")
format_nbc: bytes = (VBAN_SERVICE_RTPACKET).to_bytes(1, "little")
format_bit: bytes = (0).to_bytes(1, "little")
streamname: bytes = name.encode("ascii") + bytes(16 - len(name))
@property
def header(self):
header = self.vban
header += self.format_sr
header += self.format_nbs
header += self.format_nbc
header += self.format_bit
header += self.streamname
assert len(header) == HEADER_SIZE - 4, f"Header expected {HEADER_SIZE-4} bytes"
return header
@dataclass
class RequestHeader:
"""Represents a REQUEST RT PACKET header"""
name: str
bps_index: int
channel: int
vban: bytes = "VBAN".encode()
nbs: bytes = (0).to_bytes(1, "little")
bit: bytes = (0x10).to_bytes(1, "little")
framecounter: bytes = (0).to_bytes(4, "little")
@property
def sr(self):
return (0x40 + self.bps_index).to_bytes(1, "little")
@property
def nbc(self):
return (self.channel).to_bytes(1, "little")
@property
def streamname(self):
return self.name.encode() + bytes(16 - len(self.name))
@property
def header(self):
header = self.vban
header += self.sr
header += self.nbs
header += self.nbc
header += self.bit
header += self.streamname
header += self.framecounter
assert len(header) == HEADER_SIZE, f"Header expected {HEADER_SIZE} bytes"
return header
@dataclass
class SubscribeHeader:
"""Represents a packet used to subscribe to the RT Packet Service"""
name = "Register RTP"
timeout = 15
vban: bytes = "VBAN".encode()
format_sr: bytes = (0x60).to_bytes(1, "little")
format_nbs: bytes = (0).to_bytes(1, "little")
format_nbc: bytes = (VBAN_SERVICE_RTPACKETREGISTER).to_bytes(1, "little")
format_bit: bytes = (timeout & 0x000000FF).to_bytes(1, "little") # timeout
streamname: bytes = name.encode("ascii") + bytes(16 - len(name))
framecounter: bytes = (0).to_bytes(4, "little")
@property
def header(self):
header = self.vban
header += self.format_sr
header += self.format_nbs
header += self.format_nbc
header += self.format_bit
header += self.streamname
header += self.framecounter
assert len(header) == HEADER_SIZE, f"Header expected {HEADER_SIZE} bytes"
return header