move steps abstract method into VbanCmd.

Bump virtualenv from 20.29.0 to 20.36.1

.gitignore

@@ -159,3 +159,5 @@ config.toml
 vban.toml
 
 .vscode/
+
+PING_FEATURE.md

CHANGELOG.md

@@ -11,6 +11,16 @@ Before any major/minor/patch bump all unit tests will be run to verify they pass
 
 -   [x]
 
+## [2.9.0] - 2026-03-02
+
+### Added
+
+-   Recorder class, see [Recorder](https://github.com/onyx-and-iris/vban-cmd-python?tab=readme-ov-file#recorder) in README.
+-   Ping/pong implemented. If a pong is not received {VbanCmd}.login() will fail fast. This prevents the rt listener threads from starting up.
+    -   It has the added benefit of automatically detecting the type of VBAN server (Voicemeeter or Matrix).
+-   A thread lock around the framecounter to improve thread safety since it can be accessed by both the main thread and the Producer thread.
+
+
 ## [2.7.0] - 2026-03-01
 
 ### Added

README.md

@@ -41,14 +41,14 @@ Load VBAN connection info from toml config. A valid `vban.toml` might look like
 
 ```toml
 [connection]
-ip = "gamepc.local"
+host = "localhost"
 port = 6980
 streamname = "Command1"
 ```
 
 It should be placed in \<user home directory\> / "Documents" / "Voicemeeter" / "configs"
 
-Alternatively you may pass `ip`, `port`, `streamname` as keyword arguments.
+Alternatively you may pass `host`, `port`, `streamname` as keyword arguments.
 
 #### `__main__.py`
 
@@ -85,7 +85,7 @@ def main():
     KIND_ID = 'banana'
 
     with vban_cmd.api(
-        KIND_ID, ip='gamepc.local', port=6980, streamname='Command1'
+        KIND_ID, host='localhost', port=6980, streamname='Command1'
     ) as vban:
         do = ManyThings(vban)
         do.things()
@@ -474,7 +474,7 @@ example:
 import vban_cmd
 
 opts = {
-    'ip': '<ip address>',
+    'host': '<ip address>',
     'streamname': 'Command1',
     'port': 6980,
 }
@@ -541,14 +541,15 @@ print(vban.event.get())
 
 You may pass the following optional keyword arguments:
 
--   `ip`: str='localhost', ip or hostname of remote machine
+-   `host`: str='localhost', ip or hostname of remote machine
 -   `port`: int=6980, vban udp port of remote machine.
 -   `streamname`: str='Command1', name of the stream to connect to.
 -   `bps`: int=256000, bps rate of the stream.
 -   `channel`: int=0, channel on which to send the UDP requests.
 -   `pdirty`: boolean=False, parameter updates
 -   `ldirty`: boolean=False, level updates
--   `timeout`: int=5, amount of time (seconds) to wait for an incoming RT data packet (parameter states).
+-   `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.
 
@@ -591,7 +592,7 @@ import vban_cmd
 
 logging.basicConfig(level=logging.DEBUG)
 
-opts = {'ip': 'ip.local', 'port': 6980, 'streamname': 'Command1'}
+opts = {'host': 'localhost', 'port': 6980, 'streamname': 'Command1'}
 with vban_cmd.api('banana', **opts) as vban:
     ...
 ```

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'),
     }

poetry.lock

@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.0.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand.
 
 [[package]]
 name = "cachetools"
@@ -55,7 +55,7 @@ description = "Backport of PEP 654 (exception groups)"
 optional = false
 python-versions = ">=3.7"
 groups = ["dev"]
-markers = "python_version < \"3.11\""
+markers = "python_version == \"3.10\""
 files = [
     {file = "exceptiongroup-1.2.2-py3-none-any.whl", hash = "sha256:3111b9d131c238bec2f8f516e123e14ba243563fb135d3fe885990585aa7795b"},
     {file = "exceptiongroup-1.2.2.tar.gz", hash = "sha256:47c2edf7c6738fafb49fd34290706d1a1a2f4d1c6df275526b62cbb4aa5393cc"},
@@ -66,21 +66,16 @@ test = ["pytest (>=6)"]
 
 [[package]]
 name = "filelock"
-version = "3.16.1"
+version = "3.20.3"
 description = "A platform independent file lock."
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.10"
 groups = ["dev"]
 files = [
-    {file = "filelock-3.16.1-py3-none-any.whl", hash = "sha256:2082e5703d51fbf98ea75855d9d5527e33d8ff23099bec374a134febee6946b0"},
+    {file = "filelock-3.20.3-py3-none-any.whl", hash = "sha256:4b0dda527ee31078689fc205ec4f1c1bf7d56cf88b6dc9426c4f230e46c2dce1"},
-    {file = "filelock-3.16.1.tar.gz", hash = "sha256:c249fbfcd5db47e5e2d6d62198e565475ee65e4831e2561c8e313fa7eb961435"},
+    {file = "filelock-3.20.3.tar.gz", hash = "sha256:18c57ee915c7ec61cff0ecf7f0f869936c7c30191bb0cf406f1341778d0834e1"},
 ]
 
-[package.extras]
-docs = ["furo (>=2024.8.6)", "sphinx (>=8.0.2)", "sphinx-autodoc-typehints (>=2.4.1)"]
-testing = ["covdefaults (>=2.3)", "coverage (>=7.6.1)", "diff-cover (>=9.2)", "pytest (>=8.3.3)", "pytest-asyncio (>=0.24)", "pytest-cov (>=5)", "pytest-mock (>=3.14)", "pytest-timeout (>=2.3.1)", "virtualenv (>=20.26.4)"]
-typing = ["typing-extensions (>=4.12.2)"]
-
 [[package]]
 name = "iniconfig"
 version = "2.0.0"
@@ -243,7 +238,7 @@ description = "A lil' TOML parser"
 optional = false
 python-versions = ">=3.8"
 groups = ["main", "dev"]
-markers = "python_version < \"3.11\""
+markers = "python_version == \"3.10\""
 files = [
     {file = "tomli-2.2.1-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:678e4fa69e4575eb77d103de3df8a895e1591b48e740211bd1067378c69e8249"},
     {file = "tomli-2.2.1-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:023aa114dd824ade0100497eb2318602af309e5a55595f76b626d6d9f3b7b0a6"},
@@ -309,37 +304,38 @@ test = ["devpi-process (>=1.0.2)", "pytest (>=8.3.3)", "pytest-mock (>=3.14)"]
 
 [[package]]
 name = "typing-extensions"
-version = "4.12.2"
+version = "4.15.0"
-description = "Backported and Experimental Type Hints for Python 3.8+"
+description = "Backported and Experimental Type Hints for Python 3.9+"
 optional = false
-python-versions = ">=3.8"
+python-versions = ">=3.9"
 groups = ["dev"]
-markers = "python_version < \"3.11\""
+markers = "python_version == \"3.10\""
 files = [
-    {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"},
+    {file = "typing_extensions-4.15.0-py3-none-any.whl", hash = "sha256:f0fa19c6845758ab08074a0cfa8b7aecb71c999ca73d62883bc25cc018c4e548"},
-    {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"},
+    {file = "typing_extensions-4.15.0.tar.gz", hash = "sha256:0cea48d173cc12fa28ecabc3b837ea3cf6f38c6d1136f85cbaaf598984861466"},
 ]
 
 [[package]]
 name = "virtualenv"
-version = "20.29.0"
+version = "20.36.1"
 description = "Virtual Python Environment builder"
 optional = false
 python-versions = ">=3.8"
 groups = ["dev"]
 files = [
-    {file = "virtualenv-20.29.0-py3-none-any.whl", hash = "sha256:c12311863497992dc4b8644f8ea82d3b35bb7ef8ee82e6630d76d0197c39baf9"},
+    {file = "virtualenv-20.36.1-py3-none-any.whl", hash = "sha256:575a8d6b124ef88f6f51d56d656132389f961062a9177016a50e4f507bbcc19f"},
-    {file = "virtualenv-20.29.0.tar.gz", hash = "sha256:6345e1ff19d4b1296954cee076baaf58ff2a12a84a338c62b02eda39f20aa982"},
+    {file = "virtualenv-20.36.1.tar.gz", hash = "sha256:8befb5c81842c641f8ee658481e42641c68b5eab3521d8e092d18320902466ba"},
 ]
 
 [package.dependencies]
 distlib = ">=0.3.7,<1"
-filelock = ">=3.12.2,<4"
+filelock = {version = ">=3.20.1,<4", markers = "python_version >= \"3.10\""}
 platformdirs = ">=3.9.1,<5"
+typing-extensions = {version = ">=4.13.2", markers = "python_version < \"3.11\""}
 
 [package.extras]
 docs = ["furo (>=2023.7.26)", "proselint (>=0.13)", "sphinx (>=7.1.2,!=7.3)", "sphinx-argparse (>=0.4)", "sphinxcontrib-towncrier (>=0.2.1a0)", "towncrier (>=23.6)"]
-test = ["covdefaults (>=2.3)", "coverage (>=7.2.7)", "coverage-enable-subprocess (>=1)", "flaky (>=3.7)", "packaging (>=23.1)", "pytest (>=7.4)", "pytest-env (>=0.8.2)", "pytest-freezer (>=0.4.8)", "pytest-mock (>=3.11.1)", "pytest-randomly (>=3.12)", "pytest-timeout (>=2.1)", "setuptools (>=68)", "time-machine (>=2.10)"]
+test = ["covdefaults (>=2.3)", "coverage (>=7.2.7)", "coverage-enable-subprocess (>=1)", "flaky (>=3.7)", "packaging (>=23.1)", "pytest (>=7.4)", "pytest-env (>=0.8.2)", "pytest-freezer (>=0.4.8) ; platform_python_implementation == \"PyPy\" or platform_python_implementation == \"GraalVM\" or platform_python_implementation == \"CPython\" and sys_platform == \"win32\" and python_version >= \"3.13\"", "pytest-mock (>=3.11.1)", "pytest-randomly (>=3.12)", "pytest-timeout (>=2.1)", "setuptools (>=68)", "time-machine (>=2.10) ; platform_python_implementation == \"CPython\""]
 
 [[package]]
 name = "virtualenv-pyenv"

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "vban-cmd"
-version = "2.8.1"
+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" }

tests/__init__.py

@@ -11,7 +11,7 @@ from vban_cmd.kinds import request_kind_map as kindmap
 KIND_ID = os.environ.get('KIND', 'potato')
 
 opts = {
-    'ip': os.getenv('VBANCMD_IP', 'localhost'),
+    'host': os.getenv('VBANCMD_HOST', 'localhost'),
     'streamname': os.getenv('VBANCMD_STREAMNAME', 'Command1'),
     'port': int(os.getenv('VBANCMD_PORT', 6980)),
 }

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

@@ -1,4 +1,3 @@
-import abc
 import logging
 from enum import IntEnum
 from functools import cached_property
@@ -84,18 +83,20 @@ class FactoryBase(VbanCmd):
 
     def __init__(self, kind_id: str, **kwargs):
         defaultkwargs = {
-            'ip': 'localhost',
+            'host': 'localhost',
             'port': 6980,
             'streamname': 'Command1',
             'bps': 256000,
             'channel': 0,
-            'ratelimit': 0.01,
+            'script_ratelimit': None,  # if None or 0, no rate limit applied to script commands
-            'timeout': 5,
+            'timeout': 5,  # timeout on socket operations, in seconds
             'disable_rt_listeners': False,
             'sync': False,
             'pdirty': False,
             'ldirty': False,
         }
+        if 'ip' in kwargs:
+            defaultkwargs['host'] = kwargs.pop('ip')  # for backwards compatibility
         if 'subs' in kwargs:
             defaultkwargs |= kwargs.pop('subs')  # for backwards compatibility
         kwargs = defaultkwargs | kwargs
@@ -120,11 +121,6 @@ class FactoryBase(VbanCmd):
             + f"({self.kind}, ip='{self.ip}', port={self.port}, streamname='{self.streamname}')"
         )
 
-    @property
-    @abc.abstractmethod
-    def steps(self):
-        pass
-
     @cached_property
     def configs(self):
         self._configs = configs(self.kind.name)

vban_cmd/iremote.py

@@ -1,83 +1,9 @@
 import abc
 import logging
-import time
-from dataclasses import dataclass
 
 logger = logging.getLogger(__name__)
 
 
-@dataclass
-class Modes:
-    """Channel Modes"""
-
-    _mute: hex = 0x00000001
-    _solo: hex = 0x00000002
-    _mono: hex = 0x00000004
-    _mc: hex = 0x00000008
-
-    _amix: hex = 0x00000010
-    _repeat: hex = 0x00000020
-    _bmix: hex = 0x00000030
-    _composite: hex = 0x00000040
-    _tvmix: hex = 0x00000050
-    _upmix21: hex = 0x00000060
-    _upmix41: hex = 0x00000070
-    _upmix61: hex = 0x00000080
-    _centeronly: hex = 0x00000090
-    _lfeonly: hex = 0x000000A0
-    _rearonly: hex = 0x000000B0
-
-    _mask: hex = 0x000000F0
-
-    _on: hex = 0x00000100  # eq.on
-    _cross: hex = 0x00000200
-    _ab: hex = 0x00000800  # eq.ab
-
-    _busa: hex = 0x00001000
-    _busa1: hex = 0x00001000
-    _busa2: hex = 0x00002000
-    _busa3: hex = 0x00004000
-    _busa4: hex = 0x00008000
-    _busa5: hex = 0x00080000
-
-    _busb: hex = 0x00010000
-    _busb1: hex = 0x00010000
-    _busb2: hex = 0x00020000
-    _busb3: hex = 0x00040000
-
-    _pan0: hex = 0x00000000
-    _pancolor: hex = 0x00100000
-    _panmod: hex = 0x00200000
-    _panmask: hex = 0x00F00000
-
-    _postfx_r: hex = 0x01000000
-    _postfx_d: hex = 0x02000000
-    _postfx1: hex = 0x04000000
-    _postfx2: hex = 0x08000000
-
-    _sel: hex = 0x10000000
-    _monitor: hex = 0x20000000
-
-    @property
-    def modevals(self):
-        return (
-            val
-            for val in [
-                self._amix,
-                self._repeat,
-                self._bmix,
-                self._composite,
-                self._tvmix,
-                self._upmix21,
-                self._upmix41,
-                self._upmix61,
-                self._centeronly,
-                self._lfeonly,
-                self._rearonly,
-            ]
-        )
-
-
 class IRemote(abc.ABC):
     """
     Common interface between base class and extended (higher) classes
@@ -89,7 +15,6 @@ class IRemote(abc.ABC):
         self._remote = remote
         self.index = index
         self.logger = logger.getChild(self.__class__.__name__)
-        self._modes = Modes()
 
     def getter(self, param):
         cmd = self._cmd(param)
@@ -125,27 +50,16 @@ class IRemote(abc.ABC):
 
         def fget(attr, val):
             if attr == 'mode':
-                return (f'mode.{val}', 1)
+                return (getattr(self, attr), val, 1)
-            elif attr == 'knob':
+            return (self, attr, val)
-                return ('', val)
-            return (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)
+                    target, attr, val = fget(attr, val)
-                    if isinstance(val, bool):
+                    setattr(target, attr, val)
-                        val = 1 if val else 0
+                else:
-
+                    self.logger.error(f'invalid attribute {attr} for {self}')
-                    self._remote.cache[self._cmd(attr)] = val
-                    self._remote._script += f'{self._cmd(attr)}={val};'
             else:
                 target = getattr(self, attr)
                 target.apply(val)
-
-        self._remote.sendtext(self._remote._script)
-        return self
-
-    def then_wait(self):
-        self._remote._script = str()
-        time.sleep(self._remote.DELAY)

vban_cmd/meta.py

@@ -1,6 +1,7 @@
 from functools import partial
 
 from .enums import NBS, BusModes
+from .packet.enums import ChannelModes
 from .util import cache_bool, cache_float, cache_int, cache_string
 
 
@@ -27,7 +28,7 @@ def channel_bool_prop(param):
         elif param.lower() == 'mc':
             return channel_state.mc
         else:
-            return channel_state.get_mode(getattr(self._modes, f'_{param.lower()}'))
+            return channel_state.get_mode(getattr(ChannelModes, param.upper()).value)
 
     def fset(self, val):
         self.setter(param, 1 if val else 0)
@@ -55,7 +56,9 @@ def channel_int_prop(param):
             bit_9 = (channel_state._state >> 9) & 1
             return (bit_9 << 1) | bit_2
         else:
-            return channel_state.get_mode_int(getattr(self._modes, f'_{param.lower()}'))
+            return channel_state.get_mode_int(
+                getattr(ChannelModes, param.upper()).value
+            )
 
     def fset(self, val):
         self.setter(param, val)
@@ -89,7 +92,7 @@ def strip_output_prop(param):
 
         strip_state = self.public_packets[NBS.zero].states.strip[self.index]
 
-        return strip_state.get_mode(getattr(self._modes, f'_bus{param.lower()}'))
+        return strip_state.get_mode(getattr(ChannelModes, f'BUS{param.upper()}').value)
 
     def fset(self, val):
         self.setter(param, 1 if val else 0)

vban_cmd/packet/enums.py

@@ -0,0 +1,83 @@
+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"""
+
+    MUTE = 0x00000001
+    SOLO = 0x00000002
+    MONO = 0x00000004
+    MC = 0x00000008
+
+    AMIX = 0x00000010
+    REPEAT = 0x00000020
+    BMIX = 0x00000030
+    COMPOSITE = 0x00000040
+    TVMIX = 0x00000050
+    UPMIX21 = 0x00000060
+    UPMIX41 = 0x00000070
+    UPMIX61 = 0x00000080
+    CENTERONLY = 0x00000090
+    LFEONLY = 0x000000A0
+    REARONLY = 0x000000B0
+
+    MASK = 0x000000F0
+
+    ON = 0x00000100  # eq.on
+    CROSS = 0x00000200
+    AB = 0x00000800  # eq.ab
+
+    BUSA = 0x00001000
+    BUSA1 = 0x00001000
+    BUSA2 = 0x00002000
+    BUSA3 = 0x00004000
+    BUSA4 = 0x00008000
+    BUSA5 = 0x00080000
+
+    BUSB = 0x00010000
+    BUSB1 = 0x00010000
+    BUSB2 = 0x00020000
+    BUSB3 = 0x00040000
+
+    PAN0 = 0x00000000
+    PANCOLOR = 0x00100000
+    PANMOD = 0x00200000
+    PANMASK = 0x00F00000
+
+    POSTFX_R = 0x01000000
+    POSTFX_D = 0x02000000
+    POSTFX1 = 0x04000000
+    POSTFX2 = 0x08000000
+
+    SEL = 0x10000000
+    MONITOR = 0x20000000

vban_cmd/packet/headers.py

@@ -1,25 +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
+from .enums import ServiceTypes, StreamTypes, SubProtocols
-VBAN_PROTOCOL_SERVICE = 0x60
-
-VBAN_SERVICE_RTPACKETREGISTER = 32
-VBAN_SERVICE_RTPACKET = 33
-VBAN_SERVICE_MASK = 0xE0
-VBAN_PROTOCOL_MASK = 0xE0
-VBAN_SERVICE_REQUESTREPLY = 0x02
-VBAN_SERVICE_FNCT_REPLY = 0x02
 
+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:
+class VbanPingHeader:
-    """Represents the header of an incoming VBAN data packet"""
+    """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
@@ -49,10 +148,10 @@ class VbanPacket:
 
 
 @dataclass
-class VbanSubscribeHeader:
+class VbanRTSubscribeHeader:
-    """Represents the header of a subscription packet"""
+    """Represents the header of an RT subscription packet"""
 
-    nbs: NBS = NBS.zero
+    _nbs: NBS = NBS.zero
     name: str = 'Register-RTP'
     timeout: int = 15
 
@@ -61,38 +160,106 @@ class VbanSubscribeHeader:
         return b'VBAN'
 
     @property
-    def format_sr(self) -> bytes:
+    def sr(self) -> int:
-        return VBAN_PROTOCOL_SERVICE.to_bytes(1, 'little')
+        return SubProtocols.SERVICE.value
 
     @property
-    def format_nbs(self) -> bytes:
+    def nbs(self) -> int:
-        return (self.nbs.value & 0xFF).to_bytes(1, 'little')
+        return self._nbs.value & 0xFF
 
     @property
-    def format_nbc(self) -> bytes:
+    def nbc(self) -> int:
-        return VBAN_SERVICE_RTPACKETREGISTER.to_bytes(1, 'little')
+        return ServiceTypes.RTPACKETREGISTER.value
 
     @property
-    def format_bit(self) -> bytes:
+    def bit(self) -> int:
-        return (self.timeout & 0xFF).to_bytes(1, 'little')
+        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()
+        return struct.pack(
-        data.extend(header.vban)
+            '<4s4B16sI',
-        data.extend(header.format_sr)
+            header.vban,
-        data.extend(header.format_nbs)
+            header.sr,
-        data.extend(header.format_nbc)
+            header.nbs,
-        data.extend(header.format_bit)
+            header.nbc,
-        data.extend(header.streamname)
+            header.bit,
-        data.extend(framecounter.to_bytes(4, 'little'))
+            header.streamname,
-        return bytes(data)
+            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:
@@ -109,9 +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
+    protocol = format_sr & SubProtocols.MASK.value
-    if protocol != VBAN_PROTOCOL_SERVICE:
+    if protocol != SubProtocols.SERVICE.value:
-        raise ValueError(f'Not a service protocol packet: {protocol:02x}')
+        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')
@@ -128,13 +298,13 @@ def _parse_vban_service_header(data: bytes) -> dict:
 
 
 @dataclass
-class VbanResponseHeader:
+class VbanRTResponseHeader:
-    """Represents the header of a response packet"""
+    """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
 
@@ -144,7 +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):
@@ -152,9 +324,11 @@ class VbanResponseHeader:
         parsed = _parse_vban_service_header(data)
 
         # Validate this is an RTPacket response
-        if parsed['format_nbc'] != VBAN_SERVICE_RTPACKET:
+        if parsed['format_nbc'] != ServiceTypes.RTPACKET.value:
-            raise ValueError(
+            raise VBANCMDPacketError(
-                f'Not an RTPacket response packet: {parsed["format_nbc"]:02x}'
+                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)
@@ -165,9 +339,9 @@ class VbanMatrixResponseHeader:
     """Represents the header of a matrix response packet"""
 
     name: str = 'Request Reply'
-    format_sr: int = VBAN_PROTOCOL_SERVICE
+    format_sr: int = SubProtocols.SERVICE.value
-    format_nbs: int = VBAN_SERVICE_FNCT_REPLY
+    format_nbs: int = ServiceTypes.FNCT_REPLY.value
-    format_nbc: int = VBAN_SERVICE_REQUESTREPLY
+    format_nbc: int = ServiceTypes.REQUESTREPLY.value
     format_bit: int = 0
     framecounter: int = 0
 
@@ -177,16 +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
+        # Validate this is a service reply packet (dual encoding scheme)
-        if parsed['format_nbs'] != VBAN_SERVICE_FNCT_REPLY:
+        if parsed['format_nbs'] != ServiceTypes.FNCT_REPLY.value:
-            raise ValueError(f'Not a service reply packet: {parsed["format_nbs"]:02x}')
+            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)
 
@@ -205,62 +392,3 @@ class VbanMatrixResponseHeader:
         header = cls.from_bytes(data)
         payload = cls.extract_payload(data)
         return header, payload
-
-
-@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() + bytes(16 - len(self.name))
-
-    @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

@@ -1,11 +1,14 @@
+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 vban_cmd.util import comp
 
-from .headers import VbanPacket
+from .enums import ChannelModes
+from .headers import VbanRTPacket
 
 
 class Levels(NamedTuple):
@@ -20,6 +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
@@ -31,57 +41,57 @@ class ChannelState:
     # Common boolean modes
     @property
     def mute(self) -> bool:
-        return (self._state & 0x00000001) != 0
+        return (self._state & ChannelModes.MUTE.value) != 0
 
     @property
     def solo(self) -> bool:
-        return (self._state & 0x00000002) != 0
+        return (self._state & ChannelModes.SOLO.value) != 0
 
     @property
     def mono(self) -> bool:
-        return (self._state & 0x00000004) != 0
+        return (self._state & ChannelModes.MONO.value) != 0
 
     @property
     def mc(self) -> bool:
-        return (self._state & 0x00000008) != 0
+        return (self._state & ChannelModes.MC.value) != 0
 
     # EQ modes
     @property
     def eq_on(self) -> bool:
-        return (self._state & 0x00000100) != 0
+        return (self._state & ChannelModes.ON.value) != 0
 
     @property
     def eq_ab(self) -> bool:
-        return (self._state & 0x00000800) != 0
+        return (self._state & ChannelModes.AB.value) != 0
 
     # Bus assignments (strip to bus routing)
     @property
     def busa1(self) -> bool:
-        return (self._state & 0x00001000) != 0
+        return (self._state & ChannelModes.BUSA1.value) != 0
 
     @property
     def busa2(self) -> bool:
-        return (self._state & 0x00002000) != 0
+        return (self._state & ChannelModes.BUSA2.value) != 0
 
     @property
     def busa3(self) -> bool:
-        return (self._state & 0x00004000) != 0
+        return (self._state & ChannelModes.BUSA3.value) != 0
 
     @property
     def busa4(self) -> bool:
-        return (self._state & 0x00008000) != 0
+        return (self._state & ChannelModes.BUSA4.value) != 0
 
     @property
     def busb1(self) -> bool:
-        return (self._state & 0x00010000) != 0
+        return (self._state & ChannelModes.BUSB1.value) != 0
 
     @property
     def busb2(self) -> bool:
-        return (self._state & 0x00020000) != 0
+        return (self._state & ChannelModes.BUSB2.value) != 0
 
     @property
     def busb3(self) -> bool:
-        return (self._state & 0x00040000) != 0
+        return (self._state & ChannelModes.BUSB3.value) != 0
 
 
 class States(NamedTuple):
@@ -95,8 +105,8 @@ class Labels(NamedTuple):
 
 
 @dataclass
-class VbanPacketNBS0(VbanPacket):
+class VbanRTPacketNBS0(VbanRTPacket):
-    """Represents the body of a VBAN data packet with ident:0"""
+    """Represents the body of a VBAN RTPacket with ident:0"""
 
     _inputLeveldB100: bytes
     _outputLeveldB100: bytes
@@ -146,32 +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
@@ -185,77 +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(
+        strip_raw = struct.unpack('<34h', self._inputLeveldB100)
-            round(
+        return tuple(round(val * 0.01, 1) for val in strip_raw)[
-                int.from_bytes(self._inputLeveldB100[i : i + 2], 'little', signed=True)
+            : self._kind.num_strip_levels
-                * 0.01,
+        ]
-                1,
-            )
-            for i in range(0, len(self._inputLeveldB100), 2)
-        )[: self._kind.num_strip_levels]
 
-    @property
+    @cached_property
     def bus_levels(self) -> tuple[float, ...]:
         """Returns bus levels in dB"""
-        return tuple(
+        bus_raw = struct.unpack('<64h', self._outputLeveldB100)
-            round(
+        return tuple(round(val * 0.01, 1) for val in bus_raw)[
-                int.from_bytes(self._outputLeveldB100[i : i + 2], 'little', signed=True)
+            : self._kind.num_bus_levels
-                * 0.01,
+        ]
-                1,
-            )
-            for i in range(0, len(self._outputLeveldB100), 2)
-        )[: 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(
+            strip=tuple(ChannelState.from_int(state) for state in strip_states),
-                ChannelState(self._stripState[i : i + 4]) for i in range(0, 32, 4)
+            bus=tuple(ChannelState.from_int(state) for state in bus_states),
-            ),
-            bus=tuple(ChannelState(self._busState[i : i + 4]) for i in range(0, 32, 4)),
         )
 
-    @property
+    @cached_property
     def gainlayers(self) -> tuple:
         """returns tuple of all strip gain layers as tuples"""
-        return tuple(
+        layer_data = []
-            tuple(
+        for layer in range(1, 9):
-                round(
+            layer_bytes = getattr(self, f'_stripGaindB100Layer{layer}')
-                    int.from_bytes(
+            layer_raw = struct.unpack('<8h', layer_bytes)
-                        getattr(self, f'_stripGaindB100Layer{layer}')[i : i + 2],
+            layer_data.append(tuple(round(val * 0.01, 2) for val in layer_raw))
-                        'little',
+        return tuple(layer_data)
-                        signed=True,
-                    )
-                    * 0.01,
-                    2,
-                )
-                for i in range(0, 16, 2)
-            )
-            for layer in range(1, 9)
-        )
 
-    @property
+    @cached_property
     def busgain(self) -> tuple:
         """returns tuple of bus gains"""
-        return tuple(
+        bus_gain_raw = struct.unpack('<8h', self._busGaindB100)
-            round(
+        return tuple(round(val * 0.01, 2) for val in bus_gain_raw)
-                int.from_bytes(self._busGaindB100[i : i + 2], 'little', signed=True)
-                * 0.01,
-                2,
-            )
-            for i in range(0, 16, 2)
-        )
 
-    @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
+    @cached_property
-    def karaoke(self) -> int:
-        return int.from_bytes(self._nKaraoke, 'little')
-
-    @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):
+class VbanRTPacketNBS1(VbanRTPacket):
-    """Represents the body of a VBAN data packet with ident:1"""
+    """Represents the body of a VBAN RTPacket with ident:1"""
 
     strips: tuple[VbanVMParamStrip, ...]
 

vban_cmd/packet/ping0.py

@@ -0,0 +1,126 @@
+import struct
+from dataclasses import dataclass
+from enum import Enum
+
+from .headers import VbanPingHeader
+
+# VBAN PING bitType constants
+VBANPING_TYPE_RECEPTOR = 0x00000001  # Simple receptor
+VBANPING_TYPE_TRANSMITTER = 0x00000002  # Simple Transmitter
+VBANPING_TYPE_RECEPTORSPOT = 0x00000004  # SPOT receptor
+VBANPING_TYPE_TRANSMITTERSPOT = 0x00000008  # SPOT transmitter
+VBANPING_TYPE_VIRTUALDEVICE = 0x00000010  # Virtual Device
+VBANPING_TYPE_VIRTUALMIXER = 0x00000020  # Virtual Mixer
+VBANPING_TYPE_MATRIX = 0x00000040  # MATRIX
+VBANPING_TYPE_DAW = 0x00000080  # Workstation
+VBANPING_TYPE_SERVER = 0x01000000  # VBAN SERVER
+
+# VBAN PING bitfeature constants
+VBANPING_FEATURE_AUDIO = 0x00000001
+VBANPING_FEATURE_AOIP = 0x00000002
+VBANPING_FEATURE_VOIP = 0x00000004
+VBANPING_FEATURE_SERIAL = 0x00000100
+VBANPING_FEATURE_MIDI = 0x00000300
+VBANPING_FEATURE_FRAME = 0x00001000
+VBANPING_FEATURE_TXT = 0x00010000
+
+
+class VbanServerType(Enum):
+    """VBAN server types detected from PONG responses"""
+
+    UNKNOWN = 0
+    VOICEMEETER = VBANPING_TYPE_VIRTUALMIXER
+    MATRIX = VBANPING_TYPE_MATRIX
+
+
+@dataclass
+class VbanPing0Payload:
+    """Represents the VBAN PING0 payload structure as defined in the VBAN protocol documentation."""
+
+    def __init__(self):
+        self.bit_type = VBANPING_TYPE_RECEPTOR
+        self.bit_feature = VBANPING_FEATURE_TXT
+        self.bit_feature_ex = 0x00000000
+        self.preferred_rate = 48000
+        self.min_rate = 8000
+        self.max_rate = 192000
+        self.color_rgb = 0x00FF0000
+        self.version = b'\x01\x02\x03\x04'
+        self.gps_position = b'\x00' * 8
+        self.user_position = b'\x00' * 8
+        self.lang_code = b'EN\x00\x00\x00\x00\x00\x00'
+        self.reserved = b'\x00' * 8
+        self.reserved_ex = b'\x00' * 64
+        self.distant_ip = b'\x00' * 32
+        self.distant_port = 0
+        self.distant_reserved = 0
+        self.device_name = b'VBAN-CMD-Python\x00'.ljust(64, b'\x00')
+        self.manufacturer_name = b'Python-VBAN\x00'.ljust(64, b'\x00')
+        self.application_name = b'vban-cmd\x00'.ljust(64, b'\x00')
+        self.host_name = b'localhost\x00'.ljust(64, b'\x00')
+        self.user_name = b'Python User\x00'.ljust(128, b'\x00')
+        self.user_comment = b'VBAN CMD Python Client\x00'.ljust(128, b'\x00')
+
+    @classmethod
+    def to_bytes(cls) -> bytes:
+        """Convert payload to bytes"""
+        payload = cls()
+
+        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:
+        """Creates a complete PING packet with header and payload."""
+        data = bytearray()
+        data.extend(VbanPingHeader.to_bytes(framecounter))
+        data.extend(cls.to_bytes())
+        return bytes(data)
+
+    @staticmethod
+    def detect_server_type(pong_data: bytes) -> VbanServerType:
+        """Detect server type from PONG response packet.
+
+        Args:
+            pong_data: Raw bytes from PONG response packet
+
+        Returns:
+            VbanServerType enum indicating the detected server type
+        """
+        try:
+            if len(pong_data) >= 32:
+                frame_counter_bytes = pong_data[28:32]
+                frame_counter = int.from_bytes(frame_counter_bytes, 'little')
+
+                if frame_counter == VbanServerType.MATRIX.value:
+                    return VbanServerType.MATRIX
+                elif frame_counter == VbanServerType.VOICEMEETER.value:
+                    return VbanServerType.VOICEMEETER
+
+            return VbanServerType.UNKNOWN
+
+        except Exception:
+            return VbanServerType.UNKNOWN

vban_cmd/util.py

@@ -1,5 +1,62 @@
+import socket
+import time
 from typing import Iterator
 
+from .error import VBANCMDConnectionError
+
+
+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:
+            now = time.time()
+            elapsed = now - self._last_script_request_time
+            if elapsed < self.script_ratelimit:
+                time.sleep(self.script_ratelimit - elapsed)
+            self._last_script_request_time = time.time()
+        return func(*args, **kwargs)
+
+    return wrapper
+
+
+def pong_timeout(func):
+    """pong_timeout decorator for {VbanCmd}._handle_pong, to handle timeout logic and socket management."""
+
+    def wrapper(self, timeout: float = None):
+        if timeout is None:
+            timeout = min(self.timeout, 3.0)
+
+        original_timeout = self.sock.gettimeout()
+        self.sock.settimeout(0.5)
+
+        try:
+            start_time = time.time()
+            response_count = 0
+
+            while time.time() - start_time < timeout:
+                try:
+                    response_count += 1
+
+                    if func(self):
+                        return
+
+                except socket.timeout:
+                    continue
+
+            self.logger.debug(
+                f'PING timeout after {timeout}s, received {response_count} non-PONG packets'
+            )
+            raise VBANCMDConnectionError(
+                f'PING timeout: No response from {self.host}:{self.port} after {timeout}s'
+            )
+
+        finally:
+            self.sock.settimeout(original_timeout)
+
+    return wrapper
+
 
 def cache_bool(func, param):
     """Check cache for a bool prop"""
@@ -67,16 +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.
+    Returns True when levels are equal (no change), False when different.
-    Only ignores changes when levels are very quiet (below -72 dB).
     """
 
     for a, b in zip(t0, t1):
-        # If both values are very quiet (below -72dB), ignore small changes
+        yield a == b
-        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
 
 
 def deep_merge(dict1, dict2):

vban_cmd/vbancmd.py

@@ -5,14 +5,19 @@ import threading
 import time
 from pathlib import Path
 from queue import Queue
-from typing import Union
+from typing import Mapping, Union
 
 from .enums import NBS
-from .error import VBANCMDError
+from .error import VBANCMDConnectionError, VBANCMDError
 from .event import Event
-from .packet.headers import VbanMatrixResponseHeader, VbanRequestHeader
+from .packet.headers import (
+    VbanMatrixResponseHeader,
+    VbanPongHeader,
+    VbanRTRequestHeader,
+)
+from .packet.ping0 import VbanPing0Payload, VbanServerType
 from .subject import Subject
-from .util import bump_framecounter, deep_merge
+from .util import bump_framecounter, deep_merge, pong_timeout, script_ratelimit
 from .worker import Producer, Subscriber, Updater
 
 logger = logging.getLogger(__name__)
@@ -22,37 +27,39 @@ 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__)
         self.event = Event({k: kwargs.pop(k) for k in ('pdirty', 'ldirty')})
-        if not kwargs['ip']:
+        if not kwargs['host']:
             kwargs |= self._conn_from_toml()
         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)
         self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        self.sock.settimeout(self.timeout)
         self.subject = self.observer = Subject()
         self.cache = {}
         self._pdirty = False
         self._ldirty = False
-        self._script = str()
         self.stop_event = None
         self.producer = None
+        self._last_script_request_time = 0
 
+    @property
     @abc.abstractmethod
-    def __str__(self):
+    def steps(self):
-        """Ensure subclasses override str magic method"""
+        """Steps required to build the interface for this Voicemeeter kind"""
-        pass
 
     def _conn_from_toml(self) -> dict:
         try:
@@ -86,7 +93,12 @@ class VbanCmd(abc.ABC):
         self.logout()
 
     def login(self) -> None:
-        """Starts the subscriber and updater threads (unless disable_rt_listeners is True) and logs into Voicemeeter."""
+        """Sends a PING packet to the VBAN server to verify connectivity and detect server type.
+        If the server is detected as Matrix, RT listeners will be disabled for compatibility.
+        """
+        self._ping()
+        self._handle_pong()
+
         if not self.disable_rt_listeners:
             self.event.info()
 
@@ -102,7 +114,7 @@ class VbanCmd(abc.ABC):
             self.producer.start()
 
         self.logger.info(
-            "Successfully logged into VBANCMD {kind} with ip='{ip}', port={port}, streamname='{streamname}'".format(
+            "Successfully logged into VBANCMD {kind} with host='{host}', port={port}, streamname='{streamname}'".format(
                 **self.__dict__
             )
         )
@@ -120,25 +132,88 @@ class VbanCmd(abc.ABC):
     def stopped(self):
         return self.stop_event is None or self.stop_event.is_set()
 
+    def _get_next_framecounter(self) -> int:
+        """Thread-safe method to get and increment framecounter."""
+        with self._framecounter_lock:
+            current = self._framecounter
+            self._framecounter = bump_framecounter(self._framecounter)
+            return current
+
+    def _ping(self):
+        """Initiates the PING/PONG handshake with the VBAN server."""
+        try:
+            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 Exception as e:
+            raise VBANCMDConnectionError(f'PING failed: {e}') from e
+
+    @pong_timeout
+    def _handle_pong(self) -> bool:
+        """Handles incoming packets during the PING/PONG handshake, looking for a valid PONG response to confirm connectivity and detect server type.
+
+        Returns True if a valid PONG is received, False otherwise."""
+        data, addr = self.sock.recvfrom(2048)
+
+        if VbanPongHeader.is_pong_response(data):
+            self.logger.debug(f'PONG received from {addr}, connectivity confirmed')
+
+            server_type = VbanPing0Payload.detect_server_type(data)
+            self._handle_server_type(server_type)
+
+            return True
+        else:
+            if len(data) >= 8:
+                if data[:4] == b'VBAN':
+                    protocol = data[4] & 0xE0
+                    nbc = data[6]
+                    self.logger.debug(
+                        f'Non-PONG VBAN packet: protocol=0x{protocol:02x}, nbc=0x{nbc:02x}'
+                    )
+                else:
+                    self.logger.debug('Non-VBAN packet received')
+
+            return False
+
+    def _handle_server_type(self, server_type: VbanServerType) -> None:
+        """Handle the detected server type by adjusting settings accordingly."""
+        match server_type:
+            case VbanServerType.VOICEMEETER:
+                self.logger.debug(
+                    'Detected Voicemeeter VBAN server - RT listeners supported'
+                )
+            case VbanServerType.MATRIX:
+                self.logger.info(
+                    'Detected Matrix VBAN server - disabling RT listeners for compatibility'
+                )
+                self.disable_rt_listeners = True
+            case _:
+                self.logger.debug(
+                    f'Unknown server type ({server_type}) - using default settings'
+                )
+
     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._framecounter,
+                framecounter=self._get_next_framecounter(),
                 payload=payload,
             ),
-            (socket.gethostbyname(self.ip), self.port),
+            (self._host_ip, self.port),
         )
-        self._framecounter = bump_framecounter(self._framecounter)
 
     def _set_rt(self, cmd: str, val: Union[str, float]):
         """Sends a string request command over a network."""
         self._send_request(f'{cmd}={val};')
         self.cache[cmd] = val
 
+    @script_ratelimit
     def sendtext(self, script) -> str | None:
         """Sends a multiple parameter string over a network."""
         self._send_request(script)
@@ -146,14 +221,15 @@ class VbanCmd(abc.ABC):
 
         if self.disable_rt_listeners and script.endswith(('?', '?;')):
             try:
-                response = VbanMatrixResponseHeader.extract_payload(
+                data, _ = self.sock.recvfrom(2048)
-                    self.sock.recv(1024)
+                return VbanMatrixResponseHeader.extract_payload(data)
-                )
-                return response
             except ValueError as e:
                 self.logger.warning(f'Error extracting matrix response: {e}')
-
+            except TimeoutError as e:
-        time.sleep(self.DELAY)
+                self.logger.exception(f'Timeout waiting for matrix response: {e}')
+                raise VBANCMDConnectionError(
+                    f'Timeout waiting for response from {self.host}:{self.port}'
+                ) from e
 
     @property
     def type(self) -> str:
@@ -185,12 +261,8 @@ class VbanCmd(abc.ABC):
         while self.pdirty:
             time.sleep(self.DELAY)
 
-    def apply(self, data: dict):
+    def apply(self, data: Mapping):
-        """
+        """Set all parameters of a dict"""
-        Sets all parameters of a dict
-
-        minor delay between each recursion
-        """
 
         def target(key):
             match key.split('-'):
@@ -210,7 +282,8 @@ class VbanCmd(abc.ABC):
                     raise ValueError(ERR_MSG)
             return target[int(index)]
 
-        [target(key).apply(di).then_wait() for key, di in data.items()]
+        for key, di in data.items():
+            target(key).apply(di)
 
     def apply_config(self, name):
         """applies a config from memory"""

vban_cmd/worker.py

@@ -1,19 +1,18 @@
 import logging
-import socket
 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,
+    VbanRTPacket,
-    VbanResponseHeader,
+    VbanRTResponseHeader,
-    VbanSubscribeHeader,
+    VbanRTSubscribeHeader,
 )
-from .packet.nbs0 import VbanPacketNBS0
+from .packet.nbs0 import VbanRTPacketNBS0
-from .packet.nbs1 import VbanPacketNBS1
+from .packet.nbs1 import VbanRTPacketNBS1
-from .util import bump_framecounter
 
 logger = logging.getLogger(__name__)
 
@@ -26,24 +25,18 @@ class Subscriber(threading.Thread):
         self._remote = remote
         self.stop_event = stop_event
         self.logger = logger.getChild(self.__class__.__name__)
-        self._framecounter = 0
 
     def run(self):
         while not self.stopped():
-            try:
+            for nbs in NBS:
-                for nbs in NBS:
+                sub_packet = VbanRTSubscribeHeader().to_bytes(
-                    sub_packet = VbanSubscribeHeader().to_bytes(nbs, self._framecounter)
+                    nbs, self._remote._get_next_framecounter()
-                    self._remote.sock.sendto(
+                )
-                        sub_packet, (self._remote.ip, self._remote.port)
+                self._remote.sock.sendto(
-                    )
+                    sub_packet, (self._remote._host_ip, self._remote.port)
-                    self._framecounter = bump_framecounter(self._framecounter)
+                )
 
-                self.wait_until_stopped(10)
+            self.wait_until_stopped(10)
-            except socket.gaierror as e:
-                self.logger.exception(f'{type(e).__name__}: {e}')
-                raise VBANCMDConnectionError(
-                    f'unable to resolve hostname {self._remote.ip}'
-                ) from e
         self.logger.debug(f'terminating {self.name} thread')
 
     def stopped(self):
@@ -66,7 +59,6 @@ class Producer(threading.Thread):
         self.queue = queue
         self.stop_event = stop_event
         self.logger = logger.getChild(self.__class__.__name__)
-        self._remote.sock.settimeout(self._remote.timeout)
         self._remote._public_packets = [None] * (max(NBS) + 1)
         _pp = self._get_rt()
         self._remote._public_packets[_pp.nbs] = _pp
@@ -75,42 +67,40 @@ 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:
-            if resp := self._fetch_rt_packet():
+            try:
-                return resp
+                data, _ = self._remote.sock.recvfrom(2048)
+                if len(data) < HEADER_SIZE:
+                    continue
+            except TimeoutError as e:
+                self.logger.exception(f'{type(e).__name__}: {e}')
+                raise VBANCMDConnectionError(
+                    f'timeout waiting for response from {self._remote.host}:{self._remote.port}'
+                ) from e
 
-    def _fetch_rt_packet(self) -> VbanPacket | None:
+            try:
-        try:
+                header = VbanRTResponseHeader.from_bytes(data[:HEADER_SIZE])
-            data, _ = self._remote.sock.recvfrom(2048)
+            except VBANCMDPacketError as e:
-            if len(data) < HEADER_SIZE:
+                match e.protocol:
-                return
+                    case SubProtocols.SERVICE:
-        except TimeoutError as e:
+                        # Silently ignore periodic SERVICE packets unrelated to vban-cmd
-            self.logger.exception(f'{type(e).__name__}: {e}')
+                        pass
-            raise VBANCMDConnectionError(
+                    case _:
-                f'timeout waiting for response from {self._remote.ip}:{self._remote.port}'
+                        self.logger.debug(f'Error parsing response packet: {e}')
-            ) from e
+                continue
 
-        try:
+            match header.format_nbs:
-            header = VbanResponseHeader.from_bytes(data[:HEADER_SIZE])
+                case NBS.zero:
-        except ValueError as e:
+                    return VbanRTPacketNBS0.from_bytes(
-            self.logger.debug(f'Error parsing response packet: {e}')
+                        nbs=NBS.zero, kind=self._remote.kind, data=data
-            return None
+                    )
 
-        match header.format_nbs:
+                case NBS.one:
-            case NBS.zero:
+                    return VbanRTPacketNBS1.from_bytes(
-                return VbanPacketNBS0.from_bytes(
+                        nbs=NBS.one, kind=self._remote.kind, data=data
-                    nbs=NBS.zero, kind=self._remote.kind, data=data
+                    )
-                )
-
-            case NBS.one:
-                return VbanPacketNBS1.from_bytes(
-                    nbs=NBS.one, kind=self._remote.kind, data=data
-                )
-
-        return None
 
     def stopped(self):
         return self.stop_event.is_set()
@@ -138,7 +128,6 @@ class Producer(threading.Thread):
                 self.queue.put('pdirty')
             if self._remote.event.ldirty:
                 self.queue.put('ldirty')
-            # time.sleep(self._remote.ratelimit)
         self.logger.debug(f'terminating {self.name} thread')
         self.queue.put(None)