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# Copyright 2021-2022 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
# -----------------------------------------------------------------------------
import asyncio
import logging
import sys
from typing import Optional
import websockets.asyncio.server
import bumble.logging
from bumble import data_types, decoder, gatt
from bumble.core import AdvertisingData
from bumble.device import AdvertisingParameters, Device
from bumble.profiles import asha
from bumble.transport import open_transport
ws_connection: Optional[websockets.asyncio.server.ServerConnection] = None
g722_decoder = decoder.G722Decoder()
async def ws_server(ws_client: websockets.asyncio.server.ServerConnection):
global ws_connection
ws_connection = ws_client
async for message in ws_client:
print(message)
# -----------------------------------------------------------------------------
async def main() -> None:
if len(sys.argv) != 3:
print('Usage: python run_asha_sink.py <device-config> <transport-spec>')
print('example: python run_asha_sink.py device1.json usb:0')
return
async with await open_transport(sys.argv[2]) as hci_transport:
device = Device.from_config_file_with_hci(
sys.argv[1], hci_transport.source, hci_transport.sink
)
def on_audio_packet(packet: bytes) -> None:
global ws_connection
if ws_connection:
offset = 1
while offset < len(packet):
pcm_data = g722_decoder.decode_frame(packet[offset : offset + 80])
offset += 80
asyncio.get_running_loop().create_task(ws_connection.send(pcm_data))
else:
logging.info("No active client")
asha_service = asha.AshaService(
capability=0,
hisyncid=b'\x01\x02\x03\x04\x05\x06\x07\x08',
device=device,
audio_sink=on_audio_packet,
)
device.add_service(asha_service)
# Set the advertising data
advertising_data = (
bytes(
AdvertisingData(
[
data_types.CompleteLocalName(device.name),
data_types.Flags(AdvertisingData.Flags(0x06)),
data_types.IncompleteListOf16BitServiceUUIDs(
[gatt.GATT_ASHA_SERVICE]
),
]
)
)
+ asha_service.get_advertising_data()
)
# Go!
await device.power_on()
await device.create_advertising_set(
auto_restart=True,
advertising_data=advertising_data,
advertising_parameters=AdvertisingParameters(
primary_advertising_interval_min=100,
primary_advertising_interval_max=100,
),
)
await websockets.asyncio.server.serve(ws_server, port=8888)
await hci_transport.source.terminated
# -----------------------------------------------------------------------------
bumble.logging.setup_basic_logging('DEBUG')
asyncio.run(main())
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