90 lines
2.7 KiB
Python
90 lines
2.7 KiB
Python
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from abc import ABCMeta, abstractmethod
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from pyglet import event
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from pyglet.util import with_metaclass
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class DeviceState:
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ACTIVE = "active"
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DISABLED = "disabled"
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MISSING = "missing"
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UNPLUGGED = "unplugged"
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class DeviceFlow:
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OUTPUT = "output"
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INPUT = "input"
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INPUT_OUTPUT = "input/output"
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class AudioDevice:
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"""Base class for a platform independent audio device.
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_platform_state and _platform_flow is used to make device state numbers."""
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_platform_state = {} # Must be defined by the parent.
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_platform_flow = {} # Must be defined by the parent.
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def __init__(self, dev_id, name, description, flow, state):
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self.id = dev_id
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self.flow = flow
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self.state = state
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self.name = name
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self.description = description
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def __repr__(self):
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return "{}(name={}, state={}, flow={})".format(
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self.__class__.__name__, self.name, self._platform_state[self.state], self._platform_flow[self.flow])
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class AbstractAudioDeviceManager(with_metaclass(ABCMeta, event.EventDispatcher, object)):
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def __del__(self):
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"""Required to remove handlers before exit, as it can cause problems with the event system's weakrefs."""
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self.remove_handlers(self)
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@abstractmethod
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def get_default_output(self):
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"""Returns a default active output device or None if none available."""
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pass
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@abstractmethod
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def get_default_input(self):
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"""Returns a default active input device or None if none available."""
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pass
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@abstractmethod
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def get_output_devices(self):
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"""Returns a list of all active output devices."""
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pass
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@abstractmethod
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def get_input_devices(self):
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"""Returns a list of all active input devices."""
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pass
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@abstractmethod
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def get_all_devices(self):
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"""Returns a list of all audio devices, no matter what state they are in."""
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pass
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def on_device_state_changed(self, device, old_state, new_state):
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"""Event, occurs when the state of a device changes, provides old state and new state."""
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pass
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def on_device_added(self, device):
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"""Event, occurs when a new device is added to the system."""
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pass
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def on_device_removed(self, device):
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"""Event, occurs when an existing device is removed from the system."""
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pass
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def on_default_changed(self, device):
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"""Event, occurs when the default audio device changes."""
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pass
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AbstractAudioDeviceManager.register_event_type('on_device_state_changed')
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AbstractAudioDeviceManager.register_event_type('on_device_added')
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AbstractAudioDeviceManager.register_event_type('on_device_removed')
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AbstractAudioDeviceManager.register_event_type('on_default_changed')
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