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