resolves the hostname once and use it throughout the package

this is more efficient and fails faster on error.

patch bump

README.md

@@ -548,7 +548,7 @@ You may pass the following optional keyword arguments:
 -   `channel`: int=0, channel on which to send the UDP requests.
 -   `pdirty`: boolean=False, parameter updates
 -   `ldirty`: boolean=False, level updates
--   `script_ratelimit`: float=0.05, default to 20 script requests per second. This affects vban.sendtext() specifically.
+-   `script_ratelimit`: float | None=None, ratelimit for vban.sendtext() specifically.
 -   `timeout`: int=5, timeout for socket operations.
 -   `disable_rt_listeners`: boolean=False, set `True` if you don't wish to receive RT packets.
     -   You can still send Matrix string requests ending with `?` and receive a response.

examples/gui/__main__.py

@@ -103,7 +103,7 @@ class App(tk.Tk):
 def main():
     KIND_ID = 'banana'
     conn = {
-        'ip': os.environ.get('VBANCMD_IP', 'localhost'),
+        'host': os.environ.get('VBANCMD_HOST', 'localhost'),
         'port': int(os.environ.get('VBANCMD_PORT', 6980)),
         'streamname': os.environ.get('VBANCMD_STREAMNAME', 'Command1'),
     }

examples/obs/__main__.py

@@ -94,7 +94,7 @@ class Observer:
 def main():
     KIND_ID = 'potato'
     conn = {
-        'ip': os.environ.get('VBANCMD_IP', 'localhost'),
+        'host': os.environ.get('VBANCMD_HOST', 'localhost'),
         'port': int(os.environ.get('VBANCMD_PORT', 6980)),
         'streamname': os.environ.get('VBANCMD_STREAMNAME', 'Command1'),
     }

examples/observer/__main__.py

@@ -25,7 +25,7 @@ class App:
 def main():
     KIND_ID = 'banana'
     conn = {
-        'ip': os.environ.get('VBANCMD_IP', 'localhost'),
+        'host': os.environ.get('VBANCMD_HOST', 'localhost'),
         'port': int(os.environ.get('VBANCMD_PORT', 6980)),
         'streamname': os.environ.get('VBANCMD_STREAMNAME', 'Command1'),
     }

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "vban-cmd"
-version = "2.9.6"
+version = "2.10.3"
 description = "Python interface for the VBAN RT Packet Service (Sendtext)"
 authors = [{ name = "Onyx and Iris", email = "code@onyxandiris.online" }]
 license = { text = "MIT" }

vban_cmd/error.py

@@ -1,6 +1,18 @@
+from .packet.enums import ServiceTypes, SubProtocols
+
+
 class VBANCMDError(Exception):
     """Base VBANCMD Exception class."""
 
 
 class VBANCMDConnectionError(VBANCMDError):
     """Exception raised when connection/timeout errors occur"""
+
+
+class VBANCMDPacketError(VBANCMDError):
+    """Exception raised when packet parsing errors occur"""
+
+    def __init__(self, message: str, protocol: SubProtocols, type_: ServiceTypes):
+        super().__init__(message)
+        self.protocol = protocol
+        self.type = type_

vban_cmd/factory.py

@@ -89,7 +89,7 @@ class FactoryBase(VbanCmd):
             'streamname': 'Command1',
             'bps': 256000,
             'channel': 0,
-            'script_ratelimit': 0.05,  # 20 commands per second, to avoid overloading Voicemeeter
+            'script_ratelimit': None,  # if None or 0, no rate limit applied to script commands
             'timeout': 5,  # timeout on socket operations, in seconds
             'disable_rt_listeners': False,
             'sync': False,

vban_cmd/iremote.py

@@ -48,26 +48,18 @@ class IRemote(abc.ABC):
     def apply(self, data):
         """Sets all parameters of a dict for the channel."""
 
-        script = ''
-
         def fget(attr, val):
             if attr == 'mode':
-                return (f'mode.{val}', 1)
-            elif attr == 'knob':
-                return ('', val)
-            return (attr, val)
+                return (getattr(self, attr), val, 1)
+            return (self, attr, val)
 
         for attr, val in data.items():
             if not isinstance(val, dict):
                 if attr in dir(self):  # avoid calling getattr (with hasattr)
-                    attr, val = fget(attr, val)
-                    if isinstance(val, bool):
-                        val = 1 if val else 0
-
-                    self._remote.cache[self._cmd(attr)] = val
-                    script += f'{self._cmd(attr)}={val};'
+                    target, attr, val = fget(attr, val)
+                    setattr(target, attr, val)
+                else:
+                    self.logger.error(f'invalid attribute {attr} for {self}')
             else:
                 target = getattr(self, attr)
                 target.apply(val)
-
-        self._remote.sendtext(script)

vban_cmd/packet/enums.py

@@ -1,6 +1,36 @@
 from enum import Flag
 
 
+class SubProtocols(Flag):
+    """Sub Protocols - Bit flags that can be combined"""
+
+    AUDIO = 0x00
+    SERIAL = 0x20
+    TEXT = 0x40
+    SERVICE = 0x60
+    MASK = 0xE0
+
+
+class ServiceTypes(Flag):
+    """Service Types - Bit flags that can be combined"""
+
+    PING = 0
+    PONG = 0
+    CHATUTF8 = 1
+    RTPACKETREGISTER = 32
+    RTPACKET = 33
+    REQUESTREPLY = 0x02  # A Matrix reply
+    FNCT_REPLY = 0x80  # An RTPacket reply
+
+
+class StreamTypes(Flag):
+    """Stream Types - Bit flags that can be combined"""
+
+    ASCII = 0x00
+    UTF8 = 0x10
+    WCHAR = 0x20
+
+
 class ChannelModes(Flag):
     """Channel Modes - Bit flags that can be combined"""
 

vban_cmd/packet/headers.py

@@ -1,29 +1,124 @@
+import struct
 from dataclasses import dataclass
 
 from vban_cmd.enums import NBS
+from vban_cmd.error import VBANCMDPacketError
 from vban_cmd.kinds import KindMapClass
 
-VBAN_PROTOCOL_TXT = 0x40
-VBAN_PROTOCOL_SERVICE = 0x60
-
-VBAN_SERVICE_RTPACKETREGISTER = 32
-VBAN_SERVICE_RTPACKET = 33
-VBAN_SERVICE_PING = 0
-VBAN_SERVICE_PONG = 0  # PONG uses same service type as PING
-VBAN_SERVICE_MASK = 0xE0
-VBAN_PROTOCOL_MASK = 0xE0
-VBAN_SERVICE_REQUESTREPLY = 0x02
-VBAN_SERVICE_FNCT_REPLY = 0x02
+from .enums import ServiceTypes, StreamTypes, SubProtocols
 
 PINGPONG_PACKET_SIZE = 704  # Size of the PING/PONG header + payload in bytes
-
 MAX_PACKET_SIZE = 1436
 HEADER_SIZE = 4 + 1 + 1 + 1 + 1 + 16
 
+STREAMNAME_MAX_LENGTH = 16
+# fmt: off
+BPS_OPTS = [
+    0, 110, 150, 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 31250,
+    38400, 57600, 115200, 128000, 230400, 250000, 256000, 460800, 921600,
+    1000000, 1500000, 2000000, 3000000,
+]
+# fmt: on
+
 
 @dataclass
-class VbanPacket:
-    """Represents the header of an incoming VBAN data packet"""
+class VbanPingHeader:
+    """Represents the header of a PING packet"""
+
+    name: str = 'PING0'
+    format_sr: int = SubProtocols.SERVICE.value
+    format_nbs: int = 0
+    format_nbc: int = ServiceTypes.PING.value
+    format_bit: int = 0
+    framecounter: int = 0
+
+    @property
+    def vban(self) -> bytes:
+        return b'VBAN'
+
+    @property
+    def streamname(self) -> bytes:
+        return self.name.encode('ascii')[:STREAMNAME_MAX_LENGTH].ljust(
+            STREAMNAME_MAX_LENGTH, b'\x00'
+        )
+
+    @classmethod
+    def to_bytes(cls, framecounter: int = 0) -> bytes:
+        """Creates the PING header bytes only."""
+        header = cls(framecounter=framecounter)
+
+        return struct.pack(
+            '<4s4B16sI',
+            header.vban,
+            header.format_sr,
+            header.format_nbs,
+            header.format_nbc,
+            header.format_bit,
+            header.streamname,
+            header.framecounter,
+        )
+
+
+@dataclass
+class VbanPongHeader:
+    """Represents the header of a PONG response packet"""
+
+    name: str = 'PING0'
+    format_sr: int = SubProtocols.SERVICE.value
+    format_nbs: int = 0
+    format_nbc: int = ServiceTypes.PONG.value
+    format_bit: int = 0
+    framecounter: int = 0
+
+    @property
+    def vban(self) -> bytes:
+        return b'VBAN'
+
+    @property
+    def streamname(self) -> bytes:
+        return self.name.encode('ascii')[:STREAMNAME_MAX_LENGTH].ljust(
+            STREAMNAME_MAX_LENGTH, b'\x00'
+        )
+
+    @classmethod
+    def from_bytes(cls, data: bytes):
+        """Parse a PONG response packet from bytes."""
+        parsed = _parse_vban_service_header(data)
+
+        # PONG responses use the same service type as PING (0x00)
+        # and are identified by having payload data
+        if parsed['format_nbc'] != ServiceTypes.PONG.value:
+            raise VBANCMDPacketError(
+                f'Not a PONG response packet: {parsed["format_nbc"]:02x}',
+                protocol=SubProtocols(parsed['format_sr'] & SubProtocols.MASK.value),
+                type_=ServiceTypes(parsed['format_nbc']),
+            )
+
+        return cls(**parsed)
+
+    @classmethod
+    def is_pong_response(cls, data: bytes) -> bool:
+        """Check if packet is a PONG response by analyzing the actual response format."""
+        try:
+            parsed = _parse_vban_service_header(data)
+
+            # Validate this is a service protocol packet with PING/PONG service type
+            if parsed['format_nbc'] != ServiceTypes.PONG.value:
+                return False
+
+            if parsed['name'] not in ['PING0', 'VBAN Service']:
+                return False
+
+            # PONG should have payload data (same size as PING)
+            return len(data) >= PINGPONG_PACKET_SIZE
+
+        except (ValueError, Exception):
+            return False
+
+
+@dataclass
+class VbanRTPacket:
+    """Represents the header of an incoming RTPacket"""
 
     nbs: NBS
     _kind: KindMapClass
@@ -53,10 +148,10 @@ class VbanPacket:
 
 
 @dataclass
-class VbanSubscribeHeader:
-    """Represents the header of a subscription packet"""
+class VbanRTSubscribeHeader:
+    """Represents the header of an RT subscription packet"""
 
-    nbs: NBS = NBS.zero
+    _nbs: NBS = NBS.zero
     name: str = 'Register-RTP'
     timeout: int = 15
 
@@ -65,38 +160,106 @@ class VbanSubscribeHeader:
         return b'VBAN'
 
     @property
-    def format_sr(self) -> bytes:
-        return VBAN_PROTOCOL_SERVICE.to_bytes(1, 'little')
+    def sr(self) -> int:
+        return SubProtocols.SERVICE.value
 
     @property
-    def format_nbs(self) -> bytes:
-        return (self.nbs.value & 0xFF).to_bytes(1, 'little')
+    def nbs(self) -> int:
+        return self._nbs.value & 0xFF
 
     @property
-    def format_nbc(self) -> bytes:
-        return VBAN_SERVICE_RTPACKETREGISTER.to_bytes(1, 'little')
+    def nbc(self) -> int:
+        return ServiceTypes.RTPACKETREGISTER.value
 
     @property
-    def format_bit(self) -> bytes:
-        return (self.timeout & 0xFF).to_bytes(1, 'little')
+    def bit(self) -> int:
+        return self.timeout & 0xFF
 
     @property
     def streamname(self) -> bytes:
-        return self.name.encode('ascii') + bytes(16 - len(self.name))
+        return self.name.encode()[:STREAMNAME_MAX_LENGTH].ljust(
+            STREAMNAME_MAX_LENGTH, b'\x00'
+        )
 
     @classmethod
     def to_bytes(cls, nbs: NBS, framecounter: int) -> bytes:
-        header = cls(nbs=nbs)
+        header = cls(_nbs=nbs)
 
-        data = bytearray()
-        data.extend(header.vban)
-        data.extend(header.format_sr)
-        data.extend(header.format_nbs)
-        data.extend(header.format_nbc)
-        data.extend(header.format_bit)
-        data.extend(header.streamname)
-        data.extend(framecounter.to_bytes(4, 'little'))
-        return bytes(data)
+        return struct.pack(
+            '<4s4B16sI',
+            header.vban,
+            header.sr,
+            header.nbs,
+            header.nbc,
+            header.bit,
+            header.streamname,
+            framecounter,
+        )
+
+
+@dataclass
+class VbanRTRequestHeader:
+    """Represents the header of an RT request packet"""
+
+    name: str
+    bps: int
+    channel: int
+    framecounter: int = 0
+
+    def __post_init__(self):
+        if self.bps not in BPS_OPTS:
+            raise ValueError(
+                f'Invalid bps value: {self.bps}. Must be one of {BPS_OPTS}'
+            )
+        self.bps_index = BPS_OPTS.index(self.bps)
+
+    @property
+    def vban(self) -> bytes:
+        return b'VBAN'
+
+    @property
+    def sr(self) -> int:
+        return self.bps_index | SubProtocols.TEXT.value
+
+    @property
+    def nbs(self) -> int:
+        return 0
+
+    @property
+    def nbc(self) -> int:
+        return self.channel
+
+    @property
+    def bit(self) -> int:
+        return StreamTypes.UTF8.value
+
+    @property
+    def streamname(self) -> bytes:
+        return self.name.encode()[:STREAMNAME_MAX_LENGTH].ljust(
+            STREAMNAME_MAX_LENGTH, b'\x00'
+        )
+
+    @classmethod
+    def to_bytes(cls, name: str, bps: int, channel: int, framecounter: int) -> bytes:
+        header = cls(name=name, bps=bps, channel=channel, framecounter=framecounter)
+
+        return struct.pack(
+            '<4s4B16sI',
+            header.vban,
+            header.sr,
+            header.nbs,
+            header.nbc,
+            header.bit,
+            header.streamname,
+            header.framecounter,
+        )
+
+    @classmethod
+    def encode_with_payload(
+        cls, name: str, bps: int, channel: int, framecounter: int, payload: str
+    ) -> bytes:
+        """Creates the complete packet with header and payload."""
+        return cls.to_bytes(name, bps, channel, framecounter) + payload.encode()
 
 
 def _parse_vban_service_header(data: bytes) -> dict:
@@ -113,9 +276,12 @@ def _parse_vban_service_header(data: bytes) -> dict:
     format_bit = data[7]
 
     # Verify this is a service protocol packet
-    protocol = format_sr & VBAN_PROTOCOL_MASK
-    if protocol != VBAN_PROTOCOL_SERVICE:
-        raise ValueError(f'Not a service protocol packet: {protocol:02x}')
+    protocol = format_sr & SubProtocols.MASK.value
+    if protocol != SubProtocols.SERVICE.value:
+        raise VBANCMDPacketError(
+            f'Invalid protocol in service header: {protocol:02x}',
+            protocol=SubProtocols(protocol),
+        )
 
     # Extract stream name and frame counter
     name = data[8:24].rstrip(b'\x00').decode('utf-8', errors='ignore')
@@ -132,13 +298,13 @@ def _parse_vban_service_header(data: bytes) -> dict:
 
 
 @dataclass
-class VbanResponseHeader:
-    """Represents the header of a response packet"""
+class VbanRTResponseHeader:
+    """Represents the header of an RT response packet"""
 
     name: str = 'Voicemeeter-RTP'
-    format_sr: int = VBAN_PROTOCOL_SERVICE
+    format_sr: int = SubProtocols.SERVICE.value
     format_nbs: int = 0
-    format_nbc: int = VBAN_SERVICE_RTPACKET
+    format_nbc: int = ServiceTypes.RTPACKET.value
     format_bit: int = 0
     framecounter: int = 0
 
@@ -148,7 +314,9 @@ class VbanResponseHeader:
 
     @property
     def streamname(self) -> bytes:
-        return self.name.encode('ascii') + bytes(16 - len(self.name))
+        return self.name.encode()[:STREAMNAME_MAX_LENGTH].ljust(
+            STREAMNAME_MAX_LENGTH, b'\x00'
+        )
 
     @classmethod
     def from_bytes(cls, data: bytes):
@@ -156,9 +324,11 @@ class VbanResponseHeader:
         parsed = _parse_vban_service_header(data)
 
         # Validate this is an RTPacket response
-        if parsed['format_nbc'] != VBAN_SERVICE_RTPACKET:
-            raise ValueError(
-                f'Not an RTPacket response packet: {parsed["format_nbc"]:02x}'
+        if parsed['format_nbc'] != ServiceTypes.RTPACKET.value:
+            raise VBANCMDPacketError(
+                f'Not an RTPacket response packet: {parsed["format_nbc"]:02x}',
+                protocol=SubProtocols(parsed['format_sr'] & SubProtocols.MASK.value),
+                type_=ServiceTypes(parsed['format_nbc']),
             )
 
         return cls(**parsed)
@@ -169,9 +339,9 @@ class VbanMatrixResponseHeader:
     """Represents the header of a matrix response packet"""
 
     name: str = 'Request Reply'
-    format_sr: int = VBAN_PROTOCOL_SERVICE
-    format_nbs: int = VBAN_SERVICE_FNCT_REPLY
-    format_nbc: int = VBAN_SERVICE_REQUESTREPLY
+    format_sr: int = SubProtocols.SERVICE.value
+    format_nbs: int = ServiceTypes.FNCT_REPLY.value
+    format_nbc: int = ServiceTypes.REQUESTREPLY.value
     format_bit: int = 0
     framecounter: int = 0
 
@@ -181,16 +351,29 @@ class VbanMatrixResponseHeader:
 
     @property
     def streamname(self) -> bytes:
-        return self.name.encode('ascii')[:16].ljust(16, b'\x00')
+        return self.name.encode()[:STREAMNAME_MAX_LENGTH].ljust(
+            STREAMNAME_MAX_LENGTH, b'\x00'
+        )
 
     @classmethod
     def from_bytes(cls, data: bytes):
         """Parse a matrix response packet from bytes."""
         parsed = _parse_vban_service_header(data)
 
-        # Validate this is a service reply packet
-        if parsed['format_nbs'] != VBAN_SERVICE_FNCT_REPLY:
-            raise ValueError(f'Not a service reply packet: {parsed["format_nbs"]:02x}')
+        # Validate this is a service reply packet (dual encoding scheme)
+        if parsed['format_nbs'] != ServiceTypes.FNCT_REPLY.value:
+            raise VBANCMDPacketError(
+                f'Not a service reply packet: {parsed["format_nbs"]:02x}',
+                protocol=SubProtocols(parsed['format_sr'] & SubProtocols.MASK.value),
+                type_=ServiceTypes(parsed['format_nbs']),
+            )
+
+        if parsed['format_nbc'] != ServiceTypes.REQUESTREPLY.value:
+            raise VBANCMDPacketError(
+                f'Not a request reply packet: {parsed["format_nbc"]:02x}',
+                protocol=SubProtocols(parsed['format_sr'] & SubProtocols.MASK.value),
+                type_=ServiceTypes(parsed['format_nbc']),
+            )
 
         return cls(**parsed)
 
@@ -209,148 +392,3 @@ class VbanMatrixResponseHeader:
         header = cls.from_bytes(data)
         payload = cls.extract_payload(data)
         return header, payload
-
-
-@dataclass
-class VbanPingHeader:
-    """Represents the header of a PING packet"""
-
-    name: str = 'PING0'
-    format_sr: int = VBAN_PROTOCOL_SERVICE
-    format_nbs: int = 0
-    format_nbc: int = VBAN_SERVICE_PING
-    format_bit: int = 0
-    framecounter: int = 0
-
-    @property
-    def vban(self) -> bytes:
-        return b'VBAN'
-
-    @property
-    def streamname(self) -> bytes:
-        return self.name.encode('ascii')[:16].ljust(16, b'\x00')
-
-    @classmethod
-    def to_bytes(cls, framecounter: int = 0) -> bytes:
-        """Creates the PING header bytes only."""
-        header = cls(framecounter=framecounter)
-
-        data = bytearray()
-        data.extend(header.vban)
-        data.extend(header.format_sr.to_bytes(1, 'little'))
-        data.extend(header.format_nbs.to_bytes(1, 'little'))
-        data.extend(header.format_nbc.to_bytes(1, 'little'))
-        data.extend(header.format_bit.to_bytes(1, 'little'))
-        data.extend(header.streamname)
-        data.extend(header.framecounter.to_bytes(4, 'little'))
-        return bytes(data)
-
-
-@dataclass
-class VbanPongHeader:
-    """Represents the header of a PONG response packet"""
-
-    name: str = 'PING0'
-    format_sr: int = VBAN_PROTOCOL_SERVICE
-    format_nbs: int = 0
-    format_nbc: int = VBAN_SERVICE_PONG
-    format_bit: int = 0
-    framecounter: int = 0
-
-    @property
-    def vban(self) -> bytes:
-        return b'VBAN'
-
-    @property
-    def streamname(self) -> bytes:
-        return self.name.encode('ascii')[:16].ljust(16, b'\x00')
-
-    @classmethod
-    def from_bytes(cls, data: bytes):
-        """Parse a PONG response packet from bytes."""
-        parsed = _parse_vban_service_header(data)
-
-        # PONG responses use the same service type as PING (0x00)
-        # and are identified by having payload data
-        if parsed['format_nbc'] != VBAN_SERVICE_PONG:
-            raise ValueError(f'Not a PONG response packet: {parsed["format_nbc"]:02x}')
-
-        return cls(**parsed)
-
-    @classmethod
-    def is_pong_response(cls, data: bytes) -> bool:
-        """Check if packet is a PONG response by analyzing the actual response format."""
-        try:
-            parsed = _parse_vban_service_header(data)
-
-            # Validate this is a service protocol packet with PING/PONG service type
-            if parsed['format_nbc'] != VBAN_SERVICE_PONG:
-                return False
-
-            if parsed['name'] not in ['PING0', 'VBAN Service']:
-                return False
-
-            # PONG should have payload data (same size as PING)
-            return len(data) >= PINGPONG_PACKET_SIZE
-
-        except (ValueError, Exception):
-            return False
-
-
-@dataclass
-class VbanRequestHeader:
-    """Represents the header of a request packet"""
-
-    name: str
-    bps_index: int
-    channel: int
-    framecounter: int = 0
-
-    @property
-    def vban(self) -> bytes:
-        return b'VBAN'
-
-    @property
-    def sr(self) -> bytes:
-        return (VBAN_PROTOCOL_TXT + self.bps_index).to_bytes(1, 'little')
-
-    @property
-    def nbs(self) -> bytes:
-        return (0).to_bytes(1, 'little')
-
-    @property
-    def nbc(self) -> bytes:
-        return (self.channel).to_bytes(1, 'little')
-
-    @property
-    def bit(self) -> bytes:
-        return (0x10).to_bytes(1, 'little')
-
-    @property
-    def streamname(self) -> bytes:
-        return self.name.encode()[:16].ljust(16, b'\x00')
-
-    @classmethod
-    def to_bytes(
-        cls, name: str, bps_index: int, channel: int, framecounter: int
-    ) -> bytes:
-        header = cls(
-            name=name, bps_index=bps_index, channel=channel, framecounter=framecounter
-        )
-
-        data = bytearray()
-        data.extend(header.vban)
-        data.extend(header.sr)
-        data.extend(header.nbs)
-        data.extend(header.nbc)
-        data.extend(header.bit)
-        data.extend(header.streamname)
-        data.extend(header.framecounter.to_bytes(4, 'little'))
-        return bytes(data)
-
-    @classmethod
-    def encode_with_payload(
-        cls, name: str, bps_index: int, channel: int, framecounter: int, payload: str
-    ) -> bytes:
-        """Creates the complete packet with header and payload."""
-        return cls.to_bytes(name, bps_index, channel, framecounter) + payload.encode()

vban_cmd/packet/nbs0.py

@@ -1,4 +1,6 @@
+import struct
 from dataclasses import dataclass
+from functools import cached_property
 from typing import NamedTuple
 
 from vban_cmd.enums import NBS
@@ -6,7 +8,7 @@ from vban_cmd.kinds import KindMapClass
 from vban_cmd.util import comp
 
 from .enums import ChannelModes
-from .headers import VbanPacket
+from .headers import VbanRTPacket
 
 
 class Levels(NamedTuple):
@@ -21,6 +23,13 @@ class ChannelState:
         # Convert 4-byte state to integer once for efficient lookups
         self._state = int.from_bytes(state_bytes, 'little')
 
+    @classmethod
+    def from_int(cls, state_int: int):
+        """Create ChannelState directly from integer for efficiency"""
+        instance = cls.__new__(cls)
+        instance._state = state_int
+        return instance
+
     def get_mode(self, mode_value: int) -> bool:
         """Get boolean state for a specific mode"""
         return (self._state & mode_value) != 0
@@ -96,8 +105,8 @@ class Labels(NamedTuple):
 
 
 @dataclass
-class VbanPacketNBS0(VbanPacket):
-    """Represents the body of a VBAN data packet with ident:0"""
+class VbanRTPacketNBS0(VbanRTPacket):
+    """Represents the body of a VBAN RTPacket with ident:0"""
 
     _inputLeveldB100: bytes
     _outputLeveldB100: bytes
@@ -147,32 +156,17 @@ class VbanPacketNBS0(VbanPacket):
 
     def pdirty(self, other) -> bool:
         """True iff any defined parameter has changed"""
-
-        self_gains = (
-            self._stripGaindB100Layer1
-            + self._stripGaindB100Layer2
-            + self._stripGaindB100Layer3
-            + self._stripGaindB100Layer4
-            + self._stripGaindB100Layer5
-            + self._stripGaindB100Layer6
-            + self._stripGaindB100Layer7
-            + self._stripGaindB100Layer8
-        )
-        other_gains = (
-            other._stripGaindB100Layer1
-            + other._stripGaindB100Layer2
-            + other._stripGaindB100Layer3
-            + other._stripGaindB100Layer4
-            + other._stripGaindB100Layer5
-            + other._stripGaindB100Layer6
-            + other._stripGaindB100Layer7
-            + other._stripGaindB100Layer8
-        )
-
         return (
             self._stripState != other._stripState
             or self._busState != other._busState
-            or self_gains != other_gains
+            or self._stripGaindB100Layer1 != other._stripGaindB100Layer1
+            or self._stripGaindB100Layer2 != other._stripGaindB100Layer2
+            or self._stripGaindB100Layer3 != other._stripGaindB100Layer3
+            or self._stripGaindB100Layer4 != other._stripGaindB100Layer4
+            or self._stripGaindB100Layer5 != other._stripGaindB100Layer5
+            or self._stripGaindB100Layer6 != other._stripGaindB100Layer6
+            or self._stripGaindB100Layer7 != other._stripGaindB100Layer7
+            or self._stripGaindB100Layer8 != other._stripGaindB100Layer8
             or self._busGaindB100 != other._busGaindB100
             or self._stripLabelUTF8c60 != other._stripLabelUTF8c60
             or self._busLabelUTF8c60 != other._busLabelUTF8c60
@@ -186,77 +180,54 @@ class VbanPacketNBS0(VbanPacket):
         )
         return any(self._strip_comp) or any(self._bus_comp)
 
-    @property
+    @cached_property
     def strip_levels(self) -> tuple[float, ...]:
         """Returns strip levels in dB"""
-        return tuple(
-            round(
-                int.from_bytes(self._inputLeveldB100[i : i + 2], 'little', signed=True)
-                * 0.01,
-                1,
-            )
-            for i in range(0, len(self._inputLeveldB100), 2)
-        )[: self._kind.num_strip_levels]
+        strip_raw = struct.unpack('<34h', self._inputLeveldB100)
+        return tuple(round(val * 0.01, 1) for val in strip_raw)[
+            : self._kind.num_strip_levels
+        ]
 
-    @property
+    @cached_property
     def bus_levels(self) -> tuple[float, ...]:
         """Returns bus levels in dB"""
-        return tuple(
-            round(
-                int.from_bytes(self._outputLeveldB100[i : i + 2], 'little', signed=True)
-                * 0.01,
-                1,
-            )
-            for i in range(0, len(self._outputLeveldB100), 2)
-        )[: self._kind.num_bus_levels]
+        bus_raw = struct.unpack('<64h', self._outputLeveldB100)
+        return tuple(round(val * 0.01, 1) for val in bus_raw)[
+            : self._kind.num_bus_levels
+        ]
 
     @property
     def levels(self) -> Levels:
         """Returns strip and bus levels as a namedtuple"""
         return Levels(strip=self.strip_levels, bus=self.bus_levels)
 
-    @property
+    @cached_property
     def states(self) -> States:
         """returns States object with processed strip and bus channel states"""
+        strip_states = struct.unpack('<8I', self._stripState)
+        bus_states = struct.unpack('<8I', self._busState)
         return States(
-            strip=tuple(
-                ChannelState(self._stripState[i : i + 4]) for i in range(0, 32, 4)
-            ),
-            bus=tuple(ChannelState(self._busState[i : i + 4]) for i in range(0, 32, 4)),
+            strip=tuple(ChannelState.from_int(state) for state in strip_states),
+            bus=tuple(ChannelState.from_int(state) for state in bus_states),
         )
 
-    @property
+    @cached_property
     def gainlayers(self) -> tuple:
         """returns tuple of all strip gain layers as tuples"""
-        return tuple(
-            tuple(
-                round(
-                    int.from_bytes(
-                        getattr(self, f'_stripGaindB100Layer{layer}')[i : i + 2],
-                        'little',
-                        signed=True,
-                    )
-                    * 0.01,
-                    2,
-                )
-                for i in range(0, 16, 2)
-            )
-            for layer in range(1, 9)
-        )
+        layer_data = []
+        for layer in range(1, 9):
+            layer_bytes = getattr(self, f'_stripGaindB100Layer{layer}')
+            layer_raw = struct.unpack('<8h', layer_bytes)
+            layer_data.append(tuple(round(val * 0.01, 2) for val in layer_raw))
+        return tuple(layer_data)
 
-    @property
+    @cached_property
     def busgain(self) -> tuple:
         """returns tuple of bus gains"""
-        return tuple(
-            round(
-                int.from_bytes(self._busGaindB100[i : i + 2], 'little', signed=True)
-                * 0.01,
-                2,
-            )
-            for i in range(0, 16, 2)
-        )
+        bus_gain_raw = struct.unpack('<8h', self._busGaindB100)
+        return tuple(round(val * 0.01, 2) for val in bus_gain_raw)
 
-    @property
+    @cached_property
     def labels(self) -> Labels:
         """returns Labels namedtuple of strip and bus labels"""
 

vban_cmd/packet/nbs1.py

@@ -1,11 +1,12 @@
 import struct
 from dataclasses import dataclass
+from functools import cached_property
 from typing import NamedTuple
 
 from vban_cmd.enums import NBS
 from vban_cmd.kinds import KindMapClass
 
-from .headers import VbanPacket
+from .headers import VbanRTPacket
 
 VMPARAMSTRIP_SIZE = 174
 
@@ -193,11 +194,15 @@ class VbanVMParamStrip:
             _Pitch_formant_high=data[172:174],
         )
 
-    @property
+    @cached_property
     def mode(self) -> int:
         return int.from_bytes(self._mode, 'little')
 
-    @property
+    @cached_property
+    def karaoke(self) -> int:
+        return int.from_bytes(self._nKaraoke, 'little')
+
+    @cached_property
     def audibility(self) -> Audibility:
         return Audibility(
             round(int.from_bytes(self._audibility, 'little', signed=True) * 0.01, 2),
@@ -206,7 +211,7 @@ class VbanVMParamStrip:
             round(int.from_bytes(self._audibility_d, 'little', signed=True) * 0.01, 2),
         )
 
-    @property
+    @cached_property
     def positions(self) -> Positions:
         return Positions(
             round(int.from_bytes(self._pos3D_x, 'little', signed=True) * 0.01, 2),
@@ -217,7 +222,7 @@ class VbanVMParamStrip:
             round(int.from_bytes(self._posMod_y, 'little', signed=True) * 0.01, 2),
         )
 
-    @property
+    @cached_property
     def eqgains(self) -> EqGains:
         return EqGains(
             *[
@@ -230,7 +235,7 @@ class VbanVMParamStrip:
             ]
         )
 
-    @property
+    @cached_property
     def parametric_eq(self) -> tuple[ParametricEQSettings, ...]:
         return tuple(
             ParametricEQSettings(
@@ -243,7 +248,7 @@ class VbanVMParamStrip:
             for i in range(6)
         )
 
-    @property
+    @cached_property
     def sends(self) -> Sends:
         return Sends(
             round(int.from_bytes(self._send_reverb, 'little', signed=True) * 0.01, 2),
@@ -252,11 +257,7 @@ class VbanVMParamStrip:
             round(int.from_bytes(self._send_fx2, 'little', signed=True) * 0.01, 2),
         )
 
-    @property
-    def karaoke(self) -> int:
-        return int.from_bytes(self._nKaraoke, 'little')
-
-    @property
+    @cached_property
     def compressor(self) -> CompressorSettings:
         return CompressorSettings(
             gain_in=round(
@@ -276,7 +277,7 @@ class VbanVMParamStrip:
             ),
         )
 
-    @property
+    @cached_property
     def gate(self) -> GateSettings:
         return GateSettings(
             threshold_in=round(
@@ -295,7 +296,7 @@ class VbanVMParamStrip:
             release_ms=round(int.from_bytes(self._GATE_release_ms, 'little') * 0.1, 2),
         )
 
-    @property
+    @cached_property
     def denoiser(self) -> DenoiserSettings:
         return DenoiserSettings(
             threshold=round(
@@ -303,7 +304,7 @@ class VbanVMParamStrip:
             )
         )
 
-    @property
+    @cached_property
     def pitch(self) -> PitchSettings:
         return PitchSettings(
             enabled=bool(int.from_bytes(self._PitchEnabled, 'little')),
@@ -327,8 +328,8 @@ class VbanVMParamStrip:
 
 
 @dataclass
-class VbanPacketNBS1(VbanPacket):
-    """Represents the body of a VBAN data packet with ident:1"""
+class VbanRTPacketNBS1(VbanRTPacket):
+    """Represents the body of a VBAN RTPacket with ident:1"""
 
     strips: tuple[VbanVMParamStrip, ...]
 

vban_cmd/packet/ping0.py

@@ -1,3 +1,4 @@
+import struct
 from dataclasses import dataclass
 from enum import Enum
 
@@ -65,30 +66,31 @@ class VbanPing0Payload:
         """Convert payload to bytes"""
         payload = cls()
 
-        data = bytearray()
-        data.extend(payload.bit_type.to_bytes(4, 'little'))
-        data.extend(payload.bit_feature.to_bytes(4, 'little'))
-        data.extend(payload.bit_feature_ex.to_bytes(4, 'little'))
-        data.extend(payload.preferred_rate.to_bytes(4, 'little'))
-        data.extend(payload.min_rate.to_bytes(4, 'little'))
-        data.extend(payload.max_rate.to_bytes(4, 'little'))
-        data.extend(payload.color_rgb.to_bytes(4, 'little'))
-        data.extend(payload.version)
-        data.extend(payload.gps_position)
-        data.extend(payload.user_position)
-        data.extend(payload.lang_code)
-        data.extend(payload.reserved)
-        data.extend(payload.reserved_ex)
-        data.extend(payload.distant_ip)
-        data.extend(payload.distant_port.to_bytes(2, 'little'))
-        data.extend(payload.distant_reserved.to_bytes(2, 'little'))
-        data.extend(payload.device_name)
-        data.extend(payload.manufacturer_name)
-        data.extend(payload.application_name)
-        data.extend(payload.host_name)
-        data.extend(payload.user_name)
-        data.extend(payload.user_comment)
-        return bytes(data)
+        return struct.pack(
+            '<7I4s8s8s8s8s64s32s2H64s64s64s64s128s128s',
+            payload.bit_type,
+            payload.bit_feature,
+            payload.bit_feature_ex,
+            payload.preferred_rate,
+            payload.min_rate,
+            payload.max_rate,
+            payload.color_rgb,
+            payload.version,
+            payload.gps_position,
+            payload.user_position,
+            payload.lang_code,
+            payload.reserved,
+            payload.reserved_ex,
+            payload.distant_ip,
+            payload.distant_port,
+            payload.distant_reserved,
+            payload.device_name,
+            payload.manufacturer_name,
+            payload.application_name,
+            payload.host_name,
+            payload.user_name,
+            payload.user_comment,
+        )
 
     @classmethod
     def create_packet(cls, framecounter: int) -> bytes:

vban_cmd/util.py

@@ -5,12 +5,12 @@ from typing import Iterator
 from .error import VBANCMDConnectionError
 
 
-def ratelimit(func):
-    """ratelimit decorator for {VbanCmd}.sendtext, to prevent flooding the network with script requests."""
+def script_ratelimit(func):
+    """script_ratelimit decorator for {VbanCmd}.sendtext, to prevent flooding the network with script requests."""
 
     def wrapper(*args, **kwargs):
         self, *rem = args
-        if self.script_ratelimit > 0:
+        if self.script_ratelimit:
             now = time.time()
             elapsed = now - self._last_script_request_time
             if elapsed < self.script_ratelimit:
@@ -124,16 +124,11 @@ def comp(t0: tuple, t1: tuple) -> Iterator[bool]:
     """
     Generator function, accepts two tuples of dB values.
 
-    Evaluates equality of each member in both tuples.
-    Only ignores changes when levels are very quiet (below -72 dB).
+    Returns True when levels are equal (no change), False when different.
     """
 
     for a, b in zip(t0, t1):
-        # If both values are very quiet (below -72dB), ignore small changes
-        if a <= -72.0 and b <= -72.0:
-            yield a == b  # Both quiet, check if they're equal
-        else:
-            yield a != b  # At least one has significant level, detect changes
+        yield a == b
 
 
 def deep_merge(dict1, dict2):

vban_cmd/vbancmd.py

@@ -13,11 +13,11 @@ from .event import Event
 from .packet.headers import (
     VbanMatrixResponseHeader,
     VbanPongHeader,
-    VbanRequestHeader,
+    VbanRTRequestHeader,
 )
 from .packet.ping0 import VbanPing0Payload, VbanServerType
 from .subject import Subject
-from .util import bump_framecounter, deep_merge, pong_timeout, ratelimit
+from .util import bump_framecounter, deep_merge, pong_timeout, script_ratelimit
 from .worker import Producer, Subscriber, Updater
 
 logger = logging.getLogger(__name__)
@@ -27,13 +27,6 @@ class VbanCmd(abc.ABC):
     """Abstract Base Class for Voicemeeter VBAN Command Interfaces"""
 
     DELAY = 0.001
-    # fmt: off
-    BPS_OPTS = [
-        0, 110, 150, 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 31250,
-        38400, 57600, 115200, 128000, 230400, 250000, 256000, 460800, 921600,
-        1000000, 1500000, 2000000, 3000000,
-    ]
-    # fmt: on
 
     def __init__(self, **kwargs):
         self.logger = logger.getChild(self.__class__.__name__)
@@ -43,6 +36,13 @@ class VbanCmd(abc.ABC):
         for attr, val in kwargs.items():
             setattr(self, attr, val)
 
+        try:
+            self._host_ip = socket.gethostbyname(self.host)
+        except socket.gaierror as e:
+            raise VBANCMDConnectionError(
+                f'Unable to resolve hostname {self.host}'
+            ) from e
+
         self._framecounter = 0
         self._framecounter_lock = threading.Lock()
         self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
@@ -140,16 +140,13 @@ class VbanCmd(abc.ABC):
 
     def _ping(self):
         """Initiates the PING/PONG handshake with the VBAN server."""
-        ping_packet = VbanPing0Payload.create_packet(self._get_next_framecounter())
-
         try:
-            self.sock.sendto(ping_packet, (socket.gethostbyname(self.host), self.port))
+            self.sock.sendto(
+                VbanPing0Payload.create_packet(self._get_next_framecounter()),
+                (self._host_ip, self.port),
+            )
             self.logger.debug(f'PING sent to {self.host}:{self.port}')
 
-        except socket.gaierror as e:
-            raise VBANCMDConnectionError(
-                f'Unable to resolve hostname {self.host}'
-            ) from e
         except Exception as e:
             raise VBANCMDConnectionError(f'PING failed: {e}') from e
 
@@ -200,14 +197,14 @@ class VbanCmd(abc.ABC):
     def _send_request(self, payload: str) -> None:
         """Sends a request packet over the network and bumps the framecounter."""
         self.sock.sendto(
-            VbanRequestHeader.encode_with_payload(
+            VbanRTRequestHeader.encode_with_payload(
                 name=self.streamname,
-                bps_index=self.BPS_OPTS.index(self.bps),
+                bps=self.bps,
                 channel=self.channel,
                 framecounter=self._get_next_framecounter(),
                 payload=payload,
             ),
-            (socket.gethostbyname(self.host), self.port),
+            (self._host_ip, self.port),
         )
 
     def _set_rt(self, cmd: str, val: Union[str, float]):
@@ -215,7 +212,7 @@ class VbanCmd(abc.ABC):
         self._send_request(f'{cmd}={val};')
         self.cache[cmd] = val
 
-    @ratelimit
+    @script_ratelimit
     def sendtext(self, script) -> str | None:
         """Sends a multiple parameter string over a network."""
         self._send_request(script)

vban_cmd/worker.py

@@ -3,15 +3,16 @@ import threading
 import time
 
 from .enums import NBS
-from .error import VBANCMDConnectionError
+from .error import VBANCMDConnectionError, VBANCMDPacketError
+from .packet.enums import SubProtocols
 from .packet.headers import (
     HEADER_SIZE,
-    VbanPacket,
-    VbanResponseHeader,
-    VbanSubscribeHeader,
+    VbanRTPacket,
+    VbanRTResponseHeader,
+    VbanRTSubscribeHeader,
 )
-from .packet.nbs0 import VbanPacketNBS0
-from .packet.nbs1 import VbanPacketNBS1
+from .packet.nbs0 import VbanRTPacketNBS0
+from .packet.nbs1 import VbanRTPacketNBS1
 
 logger = logging.getLogger(__name__)
 
@@ -28,11 +29,11 @@ class Subscriber(threading.Thread):
     def run(self):
         while not self.stopped():
             for nbs in NBS:
-                sub_packet = VbanSubscribeHeader().to_bytes(
+                sub_packet = VbanRTSubscribeHeader().to_bytes(
                     nbs, self._remote._get_next_framecounter()
                 )
                 self._remote.sock.sendto(
-                    sub_packet, (self._remote.host, self._remote.port)
+                    sub_packet, (self._remote._host_ip, self._remote.port)
                 )
 
             self.wait_until_stopped(10)
@@ -66,7 +67,7 @@ class Producer(threading.Thread):
             self._remote.cache['bus_level'],
         ) = self._remote.public_packets[NBS.zero].levels
 
-    def _get_rt(self) -> VbanPacket:
+    def _get_rt(self) -> VbanRTPacket:
         """Attempt to fetch data packet until a valid one found"""
         while True:
             try:
@@ -80,19 +81,24 @@ class Producer(threading.Thread):
                 ) from e
 
             try:
-                header = VbanResponseHeader.from_bytes(data[:HEADER_SIZE])
-            except ValueError as e:
+                header = VbanRTResponseHeader.from_bytes(data[:HEADER_SIZE])
+            except VBANCMDPacketError as e:
+                match e.protocol:
+                    case SubProtocols.SERVICE:
+                        # Silently ignore periodic SERVICE packets unrelated to vban-cmd
+                        pass
+                    case _:
                         self.logger.debug(f'Error parsing response packet: {e}')
                 continue
 
             match header.format_nbs:
                 case NBS.zero:
-                    return VbanPacketNBS0.from_bytes(
+                    return VbanRTPacketNBS0.from_bytes(
                         nbs=NBS.zero, kind=self._remote.kind, data=data
                     )
 
                 case NBS.one:
-                    return VbanPacketNBS1.from_bytes(
+                    return VbanRTPacketNBS1.from_bytes(
                         nbs=NBS.one, kind=self._remote.kind, data=data
                     )