| # 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 os |
| import pytest |
| |
| from bumble.controller import Controller |
| from bumble.core import PhysicalTransport |
| from bumble.link import LocalLink |
| from bumble.device import Device |
| from bumble.host import Host |
| from bumble.transport import AsyncPipeSink |
| from bumble.avdtp import ( |
| AVDTP_IDLE_STATE, |
| AVDTP_STREAMING_STATE, |
| MediaPacketPump, |
| Protocol, |
| Listener, |
| MediaCodecCapabilities, |
| AVDTP_AUDIO_MEDIA_TYPE, |
| AVDTP_TSEP_SNK, |
| A2DP_SBC_CODEC_TYPE, |
| ) |
| from bumble.a2dp import ( |
| AacMediaCodecInformation, |
| OpusMediaCodecInformation, |
| SbcMediaCodecInformation, |
| ) |
| from bumble.rtp import MediaPacket |
| |
| # ----------------------------------------------------------------------------- |
| # Logging |
| # ----------------------------------------------------------------------------- |
| logger = logging.getLogger(__name__) |
| |
| |
| # ----------------------------------------------------------------------------- |
| class TwoDevices: |
| def __init__(self): |
| self.connections = [None, None] |
| |
| addresses = ['F0:F1:F2:F3:F4:F5', 'F5:F4:F3:F2:F1:F0'] |
| self.link = LocalLink() |
| self.controllers = [ |
| Controller('C1', link=self.link, public_address=addresses[0]), |
| Controller('C2', link=self.link, public_address=addresses[1]), |
| ] |
| self.devices = [ |
| Device( |
| address=addresses[0], |
| host=Host(self.controllers[0], AsyncPipeSink(self.controllers[0])), |
| ), |
| Device( |
| address=addresses[1], |
| host=Host(self.controllers[1], AsyncPipeSink(self.controllers[1])), |
| ), |
| ] |
| |
| self.paired = [None, None] |
| |
| def on_connection(self, which, connection): |
| self.connections[which] = connection |
| |
| def on_paired(self, which, keys): |
| self.paired[which] = keys |
| |
| |
| # ----------------------------------------------------------------------------- |
| @pytest.mark.asyncio |
| async def test_self_connection(): |
| # Create two devices, each with a controller, attached to the same link |
| two_devices = TwoDevices() |
| |
| # Attach listeners |
| two_devices.devices[0].on( |
| 'connection', lambda connection: two_devices.on_connection(0, connection) |
| ) |
| two_devices.devices[1].on( |
| 'connection', lambda connection: two_devices.on_connection(1, connection) |
| ) |
| |
| # Enable Classic connections |
| two_devices.devices[0].classic_enabled = True |
| two_devices.devices[1].classic_enabled = True |
| |
| # Start |
| await two_devices.devices[0].power_on() |
| await two_devices.devices[1].power_on() |
| |
| # Connect the two devices |
| await asyncio.gather( |
| two_devices.devices[0].connect( |
| two_devices.devices[1].public_address, transport=PhysicalTransport.BR_EDR |
| ), |
| two_devices.devices[1].accept(two_devices.devices[0].public_address), |
| ) |
| |
| # Check the post conditions |
| assert two_devices.connections[0] is not None |
| assert two_devices.connections[1] is not None |
| |
| |
| # ----------------------------------------------------------------------------- |
| def source_codec_capabilities(): |
| return MediaCodecCapabilities( |
| media_type=AVDTP_AUDIO_MEDIA_TYPE, |
| media_codec_type=A2DP_SBC_CODEC_TYPE, |
| media_codec_information=SbcMediaCodecInformation( |
| sampling_frequency=SbcMediaCodecInformation.SamplingFrequency.SF_44100, |
| channel_mode=SbcMediaCodecInformation.ChannelMode.JOINT_STEREO, |
| block_length=SbcMediaCodecInformation.BlockLength.BL_16, |
| subbands=SbcMediaCodecInformation.Subbands.S_8, |
| allocation_method=SbcMediaCodecInformation.AllocationMethod.LOUDNESS, |
| minimum_bitpool_value=2, |
| maximum_bitpool_value=53, |
| ), |
| ) |
| |
| |
| # ----------------------------------------------------------------------------- |
| def sink_codec_capabilities(): |
| return MediaCodecCapabilities( |
| media_type=AVDTP_AUDIO_MEDIA_TYPE, |
| media_codec_type=A2DP_SBC_CODEC_TYPE, |
| media_codec_information=SbcMediaCodecInformation( |
| sampling_frequency=SbcMediaCodecInformation.SamplingFrequency.SF_48000 |
| | SbcMediaCodecInformation.SamplingFrequency.SF_44100 |
| | SbcMediaCodecInformation.SamplingFrequency.SF_32000 |
| | SbcMediaCodecInformation.SamplingFrequency.SF_16000, |
| channel_mode=SbcMediaCodecInformation.ChannelMode.MONO |
| | SbcMediaCodecInformation.ChannelMode.DUAL_CHANNEL |
| | SbcMediaCodecInformation.ChannelMode.STEREO |
| | SbcMediaCodecInformation.ChannelMode.JOINT_STEREO, |
| block_length=SbcMediaCodecInformation.BlockLength.BL_4 |
| | SbcMediaCodecInformation.BlockLength.BL_8 |
| | SbcMediaCodecInformation.BlockLength.BL_12 |
| | SbcMediaCodecInformation.BlockLength.BL_16, |
| subbands=SbcMediaCodecInformation.Subbands.S_4 |
| | SbcMediaCodecInformation.Subbands.S_8, |
| allocation_method=SbcMediaCodecInformation.AllocationMethod.LOUDNESS |
| | SbcMediaCodecInformation.AllocationMethod.SNR, |
| minimum_bitpool_value=2, |
| maximum_bitpool_value=53, |
| ), |
| ) |
| |
| |
| # ----------------------------------------------------------------------------- |
| @pytest.mark.asyncio |
| async def test_source_sink_1(): |
| two_devices = TwoDevices() |
| # Enable Classic connections |
| two_devices.devices[0].classic_enabled = True |
| two_devices.devices[1].classic_enabled = True |
| await two_devices.devices[0].power_on() |
| await two_devices.devices[1].power_on() |
| |
| def on_rtp_packet(packet): |
| rtp_packets.append(packet) |
| if len(rtp_packets) == rtp_packets_expected: |
| rtp_packets_fully_received.set_result(None) |
| |
| sink = None |
| |
| def on_avdtp_connection(server): |
| nonlocal sink |
| sink = server.add_sink(sink_codec_capabilities()) |
| sink.on('rtp_packet', on_rtp_packet) |
| |
| # Create a listener to wait for AVDTP connections |
| listener = Listener.for_device(two_devices.devices[1]) |
| listener.on('connection', on_avdtp_connection) |
| |
| async def make_connection(): |
| connections = await asyncio.gather( |
| two_devices.devices[0].connect( |
| two_devices.devices[1].public_address, PhysicalTransport.BR_EDR |
| ), |
| two_devices.devices[1].accept(two_devices.devices[0].public_address), |
| ) |
| return connections[0] |
| |
| connection = await make_connection() |
| client = await Protocol.connect(connection) |
| endpoints = await client.discover_remote_endpoints() |
| assert len(endpoints) == 1 |
| remote_sink = list(endpoints)[0] |
| assert remote_sink.in_use == 0 |
| assert remote_sink.media_type == AVDTP_AUDIO_MEDIA_TYPE |
| assert remote_sink.tsep == AVDTP_TSEP_SNK |
| |
| async def generate_packets(packet_count): |
| sequence_number = 0 |
| timestamp = 0 |
| for i in range(packet_count): |
| payload = bytes([sequence_number % 256]) |
| packet = MediaPacket( |
| 2, 0, 0, 0, sequence_number, timestamp, 0, [], 96, payload |
| ) |
| packet.timestamp_seconds = timestamp / 44100 |
| timestamp += 10 |
| sequence_number += 1 |
| yield packet |
| |
| # Send packets using a pump object |
| rtp_packets_fully_received = asyncio.get_running_loop().create_future() |
| rtp_packets_expected = 3 |
| rtp_packets = [] |
| pump = MediaPacketPump(generate_packets(3)) |
| source = client.add_source(source_codec_capabilities(), pump) |
| stream = await client.create_stream(source, remote_sink) |
| await stream.start() |
| assert stream.state == AVDTP_STREAMING_STATE |
| assert stream.local_endpoint.in_use == 1 |
| assert stream.rtp_channel is not None |
| assert sink.in_use == 1 |
| assert sink.stream is not None |
| assert sink.stream.state == AVDTP_STREAMING_STATE |
| await rtp_packets_fully_received |
| |
| await stream.close() |
| assert stream.rtp_channel is None |
| assert source.in_use == 0 |
| assert source.stream.state == AVDTP_IDLE_STATE |
| assert sink.in_use == 0 |
| assert sink.stream.state == AVDTP_IDLE_STATE |
| |
| # Send packets manually |
| rtp_packets_fully_received = asyncio.get_running_loop().create_future() |
| rtp_packets_expected = 3 |
| rtp_packets = [] |
| source_packets = [ |
| MediaPacket(2, 0, 0, 0, i, i * 10, 0, [], 96, bytes([i])) for i in range(3) |
| ] |
| source = client.add_source(source_codec_capabilities(), None) |
| stream = await client.create_stream(source, remote_sink) |
| await stream.start() |
| assert stream.state == AVDTP_STREAMING_STATE |
| assert stream.local_endpoint.in_use == 1 |
| assert stream.rtp_channel is not None |
| assert sink.in_use == 1 |
| assert sink.stream is not None |
| assert sink.stream.state == AVDTP_STREAMING_STATE |
| |
| stream.send_media_packet(source_packets[0]) |
| stream.send_media_packet(source_packets[1]) |
| stream.send_media_packet(source_packets[2]) |
| |
| await stream.close() |
| assert stream.rtp_channel is None |
| assert len(rtp_packets) == 3 |
| assert source.in_use == 0 |
| assert source.stream.state == AVDTP_IDLE_STATE |
| assert sink.in_use == 0 |
| assert sink.stream.state == AVDTP_IDLE_STATE |
| |
| |
| # ----------------------------------------------------------------------------- |
| def test_sbc_codec_specific_information(): |
| sbc_info = SbcMediaCodecInformation.from_bytes(bytes.fromhex("3fff0235")) |
| assert ( |
| sbc_info.sampling_frequency |
| == SbcMediaCodecInformation.SamplingFrequency.SF_44100 |
| | SbcMediaCodecInformation.SamplingFrequency.SF_48000 |
| ) |
| assert ( |
| sbc_info.channel_mode |
| == SbcMediaCodecInformation.ChannelMode.MONO |
| | SbcMediaCodecInformation.ChannelMode.DUAL_CHANNEL |
| | SbcMediaCodecInformation.ChannelMode.STEREO |
| | SbcMediaCodecInformation.ChannelMode.JOINT_STEREO |
| ) |
| assert ( |
| sbc_info.block_length |
| == SbcMediaCodecInformation.BlockLength.BL_4 |
| | SbcMediaCodecInformation.BlockLength.BL_8 |
| | SbcMediaCodecInformation.BlockLength.BL_12 |
| | SbcMediaCodecInformation.BlockLength.BL_16 |
| ) |
| assert ( |
| sbc_info.subbands |
| == SbcMediaCodecInformation.Subbands.S_4 | SbcMediaCodecInformation.Subbands.S_8 |
| ) |
| assert ( |
| sbc_info.allocation_method |
| == SbcMediaCodecInformation.AllocationMethod.SNR |
| | SbcMediaCodecInformation.AllocationMethod.LOUDNESS |
| ) |
| assert sbc_info.minimum_bitpool_value == 2 |
| assert sbc_info.maximum_bitpool_value == 53 |
| |
| sbc_info2 = SbcMediaCodecInformation( |
| SbcMediaCodecInformation.SamplingFrequency.SF_44100 |
| | SbcMediaCodecInformation.SamplingFrequency.SF_48000, |
| SbcMediaCodecInformation.ChannelMode.MONO |
| | SbcMediaCodecInformation.ChannelMode.DUAL_CHANNEL |
| | SbcMediaCodecInformation.ChannelMode.STEREO |
| | SbcMediaCodecInformation.ChannelMode.JOINT_STEREO, |
| SbcMediaCodecInformation.BlockLength.BL_4 |
| | SbcMediaCodecInformation.BlockLength.BL_8 |
| | SbcMediaCodecInformation.BlockLength.BL_12 |
| | SbcMediaCodecInformation.BlockLength.BL_16, |
| SbcMediaCodecInformation.Subbands.S_4 | SbcMediaCodecInformation.Subbands.S_8, |
| SbcMediaCodecInformation.AllocationMethod.SNR |
| | SbcMediaCodecInformation.AllocationMethod.LOUDNESS, |
| 2, |
| 53, |
| ) |
| assert sbc_info == sbc_info2 |
| assert bytes(sbc_info2) == bytes.fromhex("3fff0235") |
| |
| |
| # ----------------------------------------------------------------------------- |
| def test_aac_codec_specific_information(): |
| aac_info = AacMediaCodecInformation.from_bytes(bytes.fromhex("f0018c83e800")) |
| assert ( |
| aac_info.object_type |
| == AacMediaCodecInformation.ObjectType.MPEG_2_AAC_LC |
| | AacMediaCodecInformation.ObjectType.MPEG_4_AAC_LC |
| | AacMediaCodecInformation.ObjectType.MPEG_4_AAC_LTP |
| | AacMediaCodecInformation.ObjectType.MPEG_4_AAC_SCALABLE |
| ) |
| assert ( |
| aac_info.sampling_frequency |
| == AacMediaCodecInformation.SamplingFrequency.SF_44100 |
| | AacMediaCodecInformation.SamplingFrequency.SF_48000 |
| ) |
| assert ( |
| aac_info.channels |
| == AacMediaCodecInformation.Channels.MONO |
| | AacMediaCodecInformation.Channels.STEREO |
| ) |
| assert aac_info.vbr == 1 |
| assert aac_info.bitrate == 256000 |
| |
| aac_info2 = AacMediaCodecInformation( |
| AacMediaCodecInformation.ObjectType.MPEG_2_AAC_LC |
| | AacMediaCodecInformation.ObjectType.MPEG_4_AAC_LC |
| | AacMediaCodecInformation.ObjectType.MPEG_4_AAC_LTP |
| | AacMediaCodecInformation.ObjectType.MPEG_4_AAC_SCALABLE, |
| AacMediaCodecInformation.SamplingFrequency.SF_44100 |
| | AacMediaCodecInformation.SamplingFrequency.SF_48000, |
| AacMediaCodecInformation.Channels.MONO |
| | AacMediaCodecInformation.Channels.STEREO, |
| 1, |
| 256000, |
| ) |
| assert aac_info == aac_info2 |
| assert bytes(aac_info2) == bytes.fromhex("f0018c83e800") |
| |
| |
| # ----------------------------------------------------------------------------- |
| def test_opus_codec_specific_information(): |
| opus_info = OpusMediaCodecInformation.from_bytes(bytes([0x92])) |
| assert opus_info.vendor_id == OpusMediaCodecInformation.VENDOR_ID |
| assert opus_info.codec_id == OpusMediaCodecInformation.CODEC_ID |
| assert opus_info.frame_size == OpusMediaCodecInformation.FrameSize.FS_20MS |
| assert opus_info.channel_mode == OpusMediaCodecInformation.ChannelMode.STEREO |
| assert ( |
| opus_info.sampling_frequency |
| == OpusMediaCodecInformation.SamplingFrequency.SF_48000 |
| ) |
| |
| opus_info2 = OpusMediaCodecInformation( |
| OpusMediaCodecInformation.ChannelMode.STEREO, |
| OpusMediaCodecInformation.FrameSize.FS_20MS, |
| OpusMediaCodecInformation.SamplingFrequency.SF_48000, |
| ) |
| assert opus_info2 == opus_info |
| assert opus_info2.value == bytes([0x92]) |
| |
| |
| # ----------------------------------------------------------------------------- |
| async def async_main(): |
| test_sbc_codec_specific_information() |
| test_aac_codec_specific_information() |
| test_opus_codec_specific_information() |
| await test_self_connection() |
| await test_source_sink_1() |
| |
| |
| # ----------------------------------------------------------------------------- |
| if __name__ == '__main__': |
| logging.basicConfig(level=os.environ.get('BUMBLE_LOGLEVEL', 'INFO').upper()) |
| asyncio.run(async_main()) |
