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65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
# Copyright 2024 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# -----------------------------------------------------------------------------
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# Imports
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# -----------------------------------------------------------------------------
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from __future__ import annotations
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import dataclasses
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import enum
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from typing_extensions import Self
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from bumble import core, data_types, gatt
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from bumble.profiles import le_audio
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# -----------------------------------------------------------------------------
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# Classes
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# -----------------------------------------------------------------------------
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@dataclasses.dataclass
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class PublicBroadcastAnnouncement:
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class Features(enum.IntFlag):
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ENCRYPTED = 1 << 0
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STANDARD_QUALITY_CONFIGURATION = 1 << 1
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HIGH_QUALITY_CONFIGURATION = 1 << 2
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features: Features
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metadata: le_audio.Metadata
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@classmethod
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def from_bytes(cls, data: bytes) -> Self:
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features = cls.Features(data[0])
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metadata_length = data[1]
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metadata_ltv = data[2 : 2 + metadata_length]
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return cls(
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features=features, metadata=le_audio.Metadata.from_bytes(metadata_ltv)
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)
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def get_advertising_data(self) -> bytes:
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return bytes(
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core.AdvertisingData(
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[
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data_types.ServiceData16BitUUID(
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gatt.GATT_PUBLIC_BROADCAST_ANNOUNCEMENT_SERVICE, bytes(self)
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)
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]
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)
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)
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def __bytes__(self) -> bytes:
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metadata_bytes = bytes(self.metadata)
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return bytes([self.features, len(metadata_bytes)]) + metadata_bytes
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