import ctypes as ct import logging import time from abc import abstractmethod from queue import Queue from typing import Iterable, NoReturn, Optional, Union from .cbindings import CBindings from .error import CAPIError, VMError from .event import Event from .inst import bits from .kinds import KindId from .misc import Midi from .subject import Subject from .updater import Producer, Updater from .util import grouper, polling, script logger = logging.getLogger(__name__) class Remote(CBindings): """Base class responsible for wrapping the C Remote API""" DELAY = 0.001 def __init__(self, **kwargs): self.strip_mode = 0 self.cache = {} self.midi = Midi() self.subject = self.observer = Subject() self.running = None self.event = Event( {k: kwargs.pop(k) for k in ("pdirty", "mdirty", "midi", "ldirty")} ) self.logger = logger.getChild(self.__class__.__name__) for attr, val in kwargs.items(): setattr(self, attr, val) def __enter__(self): """setup procedures""" self.login() if self.event.any(): self.init_thread() return self @abstractmethod def __str__(self): """Ensure subclasses override str magic method""" pass def init_thread(self): """Starts updates thread.""" self.running = True self.event.info() self.cache["strip_level"], self.cache["bus_level"] = self._get_levels() queue = Queue() self.updater = Updater(self, queue) self.updater.start() self.producer = Producer(self, queue) self.producer.start() self.logger.debug("events thread initiated!") def login(self) -> NoReturn: """Login to the API, initialize dirty parameters""" res = self.call(self.vm_login, ok=(0, 1)) if res == 1: self.logger.info( "Voicemeeter engine running but GUI not launched. Launching the GUI now." ) self.run_voicemeeter(self.kind.name) self.logger.info(f"{type(self).__name__}: Successfully logged into {self}") self.clear_dirty() def run_voicemeeter(self, kind_id: str) -> NoReturn: if kind_id not in (kind.name.lower() for kind in KindId): raise VMError(f"Unexpected Voicemeeter type: '{kind_id}'") if kind_id == "potato" and bits == 8: value = KindId[kind_id.upper()].value + 3 else: value = KindId[kind_id.upper()].value self.call(self.vm_runvm, value) time.sleep(1) @property def type(self) -> str: """Returns the type of Voicemeeter installation (basic, banana, potato).""" type_ = ct.c_long() self.call(self.vm_get_type, ct.byref(type_)) return KindId(type_.value).name.lower() @property def version(self) -> str: """Returns Voicemeeter's version as a string""" ver = ct.c_long() self.call(self.vm_get_version, ct.byref(ver)) return "{}.{}.{}.{}".format( (ver.value & 0xFF000000) >> 24, (ver.value & 0x00FF0000) >> 16, (ver.value & 0x0000FF00) >> 8, ver.value & 0x000000FF, ) @property def pdirty(self) -> bool: """True iff UI parameters have been updated.""" return self.call(self.vm_pdirty, ok=(0, 1)) == 1 @property def mdirty(self) -> bool: """True iff MB parameters have been updated.""" try: return self.call(self.vm_mdirty, ok=(0, 1)) == 1 except AttributeError as e: self.logger.exception(f"{type(e).__name__}: {e}") raise CAPIError( "no bind for VBVMR_MacroButton_IsDirty. are you using an old version of the API?" ) from e @property def ldirty(self) -> bool: """True iff levels have been updated.""" self._strip_buf, self._bus_buf = self._get_levels() return not ( self.cache.get("strip_level") == self._strip_buf and self.cache.get("bus_level") == self._bus_buf ) def clear_dirty(self) -> NoReturn: try: while self.pdirty or self.mdirty: pass except CAPIError: self.logger.error("no bind for mdirty, clearing pdirty only") while self.pdirty: pass @polling def get(self, param: str, is_string: Optional[bool] = False) -> Union[str, float]: """Gets a string or float parameter""" if is_string: buf = ct.create_unicode_buffer(512) self.call(self.vm_get_parameter_string, param.encode(), ct.byref(buf)) else: buf = ct.c_float() self.call(self.vm_get_parameter_float, param.encode(), ct.byref(buf)) return buf.value def set(self, param: str, val: Union[str, float]) -> NoReturn: """Sets a string or float parameter. Caches value""" if isinstance(val, str): if len(val) >= 512: raise VMError("String is too long") self.call(self.vm_set_parameter_string, param.encode(), ct.c_wchar_p(val)) else: self.call( self.vm_set_parameter_float, param.encode(), ct.c_float(float(val)) ) self.cache[param] = val @polling def get_buttonstatus(self, id: int, mode: int) -> int: """Gets a macrobutton parameter""" state = ct.c_float() try: self.call( self.vm_get_buttonstatus, ct.c_long(id), ct.byref(state), ct.c_long(mode), ) except AttributeError as e: self.logger.exception(f"{type(e).__name__}: {e}") raise CAPIError( "no bind for VBVMR_MacroButton_GetStatus. are you using an old version of the API?" ) from e return int(state.value) def set_buttonstatus(self, id: int, state: int, mode: int) -> NoReturn: """Sets a macrobutton parameter. Caches value""" c_state = ct.c_float(float(state)) try: self.call(self.vm_set_buttonstatus, ct.c_long(id), c_state, ct.c_long(mode)) except AttributeError as e: self.logger.exception(f"{type(e).__name__}: {e}") raise CAPIError( "no bind for VBVMR_MacroButton_SetStatus. are you using an old version of the API?" ) from e self.cache[f"mb_{id}_{mode}"] = int(c_state.value) def get_num_devices(self, direction: str = None) -> int: """Retrieves number of physical devices connected""" if direction not in ("in", "out"): raise VMError("Expected a direction: in or out") func = getattr(self, f"vm_get_num_{direction}devices") res = self.call(func, ok_exp=lambda r: r >= 0) return res def get_device_description(self, index: int, direction: str = None) -> tuple: """Returns a tuple of device parameters""" if direction not in ("in", "out"): raise VMError("Expected a direction: in or out") type_ = ct.c_long() name = ct.create_unicode_buffer(256) hwid = ct.create_unicode_buffer(256) func = getattr(self, f"vm_get_desc_{direction}devices") self.call( func, ct.c_long(index), ct.byref(type_), ct.byref(name), ct.byref(hwid), ) return (name.value, type_.value, hwid.value) def get_level(self, type_: int, index: int) -> float: """Retrieves a single level value""" val = ct.c_float() self.call(self.vm_get_level, ct.c_long(type_), ct.c_long(index), ct.byref(val)) return val.value def _get_levels(self) -> Iterable: """ returns both level arrays (strip_levels, bus_levels) BEFORE math conversion """ return ( tuple( self.get_level(self.strip_mode, i) for i in range(2 * self.kind.phys_in + 8 * self.kind.virt_in) ), tuple( self.get_level(3, i) for i in range(8 * (self.kind.phys_out + self.kind.virt_out)) ), ) def get_midi_message(self): n = ct.c_long(1024) buf = ct.create_string_buffer(1024) res = self.vm_get_midi_message(ct.byref(buf), n, ok_exp=lambda r: r >= 0) if res > 0: vals = tuple( grouper(3, (int.from_bytes(buf[i], "little") for i in range(res))) ) for msg in vals: ch, pitch, vel = msg if not self.midi._channel or self.midi._channel != ch: self.midi._channel = ch self.midi._most_recent = pitch self.midi._set(pitch, vel) return True @script def sendtext(self, script: str): """Sets many parameters from a script""" if len(script) > 48000: raise ValueError("Script too large, max size 48kB") self.call(self.vm_set_parameter_multi, script.encode()) time.sleep(self.DELAY * 5) def apply(self, data: dict): """ Sets all parameters of a dict minor delay between each recursion """ def param(key): obj, m2, *rem = key.split("-") index = int(m2) if m2.isnumeric() else int(*rem) if obj in ("strip", "bus", "button"): return getattr(self, obj)[index] elif obj == "vban": return getattr(getattr(self, obj), f"{m2}stream")[index] raise ValueError(obj) [param(key).apply(datum).then_wait() for key, datum in data.items()] def apply_config(self, name): """applies a config from memory""" error_msg = ( f"No config with name '{name}' is loaded into memory", f"Known configs: {list(self.configs.keys())}", ) try: self.apply(self.configs[name]) self.logger.info(f"Profile '{name}' applied!") except KeyError: self.logger.error(("\n").join(error_msg)) def logout(self) -> NoReturn: """Wait for dirty parameters to clear, then logout of the API""" self.clear_dirty() time.sleep(0.1) self.call(self.vm_logout) self.logger.info(f"{type(self).__name__}: Successfully logged out of {self}") def end_thread(self): self.running = False self.logger.debug("events thread stopped") def __exit__(self, exc_type, exc_value, exc_traceback) -> NoReturn: """teardown procedures""" self.end_thread() self.logout()