Justin
39 lines
1.5 KiB
Python
39 lines
1.5 KiB
Python
"""Explicit, isolated demonstration device; never opens USB."""
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from .i18n import tr
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from .protocol import Command as C, encode
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class DemoTransport:
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def __init__(self):
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self.events = {}
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self.values = {C.GET_STATE: b'\x03', C.GET_MODE: b'\0\3\1',
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C.GET_CODECS: b'\x0f', C.GET_CODEC: b'\4', C.GET_LE_STATE: b'\1',
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C.GET_QUALITY: b'\2\2', C.GET_TRANSPORTS: b'\1',
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C.GET_BROADCAST: b'\1\2\0', C.GET_NAME: b'BTD700 Demo'+bytes(21),
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C.GET_KEY: bytes(16), C.GET_VERSION: b'\3\x0b\0'}
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def request(self, command, payload=b''):
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encode(command, payload)
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if command in self.values:
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return self.values[command]
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if command == C.SET_MODE:
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self.values[C.GET_MODE] = payload + b'\1'
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elif command == C.SET_CODEC:
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self.values[C.GET_CODEC] = payload
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elif command == C.SET_CONNECTION:
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self.values[C.GET_STATE] = b'\2' if payload[0] else b'\1'
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elif command == C.SET_BROADCAST:
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self.values[C.GET_BROADCAST] = payload
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elif command == C.SET_NAME:
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self.values[C.GET_NAME] = (payload or b'BTD700 Demo').ljust(32, b'\0')
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elif command == C.SET_KEY:
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self.values[C.GET_KEY] = payload.ljust(16, b'\0')
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elif command == C.FACTORY_RESET:
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self.__init__()
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else:
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raise TimeoutError(tr('Nicht unterstützte Demo-Abfrage'))
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return b''
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def close(self):
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pass
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