forked from auracaster/bumble_mirror
AVRCP: Add SDP record class and finder
This commit is contained in:
Josh Wu
372
bumble/avrcp.py
372
bumble/avrcp.py
@@ -26,7 +26,7 @@ from collections.abc import AsyncIterator, Awaitable, Callable, Iterable, Sequen
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from dataclasses import dataclass, field
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from dataclasses import dataclass, field
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from typing import ClassVar, SupportsBytes, TypeVar
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from typing import ClassVar, SupportsBytes, TypeVar
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from bumble import avc, avctp, core, hci, l2cap, utils
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from bumble import avc, avctp, core, hci, l2cap, sdp, utils
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from bumble.colors import color
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from bumble.colors import color
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from bumble.device import Connection, Device
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from bumble.device import Connection, Device
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from bumble.sdp import (
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from bumble.sdp import (
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@@ -194,82 +194,43 @@ class TargetFeatures(enum.IntFlag):
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# -----------------------------------------------------------------------------
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# -----------------------------------------------------------------------------
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def make_controller_service_sdp_records(
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@dataclass
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service_record_handle: int,
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class ControllerServiceSdpRecord:
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avctp_version: tuple[int, int] = (1, 4),
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service_record_handle: int
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avrcp_version: tuple[int, int] = (1, 6),
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avctp_version: tuple[int, int] = (1, 4)
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supported_features: int | ControllerFeatures = 1,
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avrcp_version: tuple[int, int] = (1, 6)
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) -> list[ServiceAttribute]:
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supported_features: int | ControllerFeatures = ControllerFeatures(1)
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avctp_version_int = avctp_version[0] << 8 | avctp_version[1]
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avrcp_version_int = avrcp_version[0] << 8 | avrcp_version[1]
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attributes = [
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def to_service_attributes(self) -> list[ServiceAttribute]:
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ServiceAttribute(
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avctp_version_int = self.avctp_version[0] << 8 | self.avctp_version[1]
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SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID,
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avrcp_version_int = self.avrcp_version[0] << 8 | self.avrcp_version[1]
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DataElement.unsigned_integer_32(service_record_handle),
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),
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attributes = [
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ServiceAttribute(
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SDP_BROWSE_GROUP_LIST_ATTRIBUTE_ID,
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DataElement.sequence([DataElement.uuid(SDP_PUBLIC_BROWSE_ROOT)]),
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),
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ServiceAttribute(
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SDP_SERVICE_CLASS_ID_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_SERVICE),
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_CONTROLLER_SERVICE),
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]
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),
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),
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ServiceAttribute(
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SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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[
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
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DataElement.unsigned_integer_16(avctp.AVCTP_PSM),
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]
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),
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_AVCTP_PROTOCOL_ID),
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DataElement.unsigned_integer_16(avctp_version_int),
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]
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),
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]
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),
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),
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ServiceAttribute(
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SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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[
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_SERVICE),
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DataElement.unsigned_integer_16(avrcp_version_int),
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]
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),
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]
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),
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),
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ServiceAttribute(
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SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID,
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DataElement.unsigned_integer_16(supported_features),
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),
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]
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if supported_features & ControllerFeatures.SUPPORTS_BROWSING:
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attributes.append(
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ServiceAttribute(
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ServiceAttribute(
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SDP_ADDITIONAL_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID,
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DataElement.unsigned_integer_32(self.service_record_handle),
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),
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ServiceAttribute(
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SDP_BROWSE_GROUP_LIST_ATTRIBUTE_ID,
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DataElement.sequence([DataElement.uuid(SDP_PUBLIC_BROWSE_ROOT)]),
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),
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ServiceAttribute(
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SDP_SERVICE_CLASS_ID_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_SERVICE),
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_CONTROLLER_SERVICE),
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]
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),
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),
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ServiceAttribute(
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SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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DataElement.sequence(
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[
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[
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DataElement.sequence(
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DataElement.sequence(
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[
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[
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DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
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DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
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DataElement.unsigned_integer_16(
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DataElement.unsigned_integer_16(avctp.AVCTP_PSM),
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avctp.AVCTP_BROWSING_PSM
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),
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]
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]
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),
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),
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DataElement.sequence(
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DataElement.sequence(
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@@ -281,87 +242,130 @@ def make_controller_service_sdp_records(
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]
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]
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),
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),
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),
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),
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)
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ServiceAttribute(
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return attributes
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SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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[
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_SERVICE),
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DataElement.unsigned_integer_16(avrcp_version_int),
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]
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),
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]
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),
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),
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ServiceAttribute(
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SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID,
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DataElement.unsigned_integer_16(self.supported_features),
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),
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]
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if self.supported_features & ControllerFeatures.SUPPORTS_BROWSING:
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attributes.append(
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ServiceAttribute(
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SDP_ADDITIONAL_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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[
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
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DataElement.unsigned_integer_16(
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avctp.AVCTP_BROWSING_PSM
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),
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]
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),
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_AVCTP_PROTOCOL_ID),
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DataElement.unsigned_integer_16(avctp_version_int),
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]
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),
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]
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),
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),
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)
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return attributes
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@classmethod
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async def find(cls, connection: Connection) -> list[ControllerServiceSdpRecord]:
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async with sdp.Client(connection) as sdp_client:
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search_result = await sdp_client.search_attributes(
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uuids=[core.BT_AV_REMOTE_CONTROL_CONTROLLER_SERVICE],
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attribute_ids=[
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SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID,
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SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID,
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],
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)
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records: list[ControllerServiceSdpRecord] = []
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for attribute_lists in search_result:
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record = cls(0)
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for attribute in attribute_lists:
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if attribute.id == SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID:
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record.service_record_handle = attribute.value.value
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elif attribute.id == SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID:
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# [[L2CAP, PSM], [AVCTP, version]]
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record.avctp_version = (
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attribute.value.value[1].value[1].value >> 8,
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attribute.value.value[1].value[1].value & 0xFF,
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)
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elif (
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attribute.id
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== SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID
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):
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# [[AV_REMOTE_CONTROL, version]]
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record.avrcp_version = (
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attribute.value.value[0].value[1].value >> 8,
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attribute.value.value[0].value[1].value & 0xFF,
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)
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elif attribute.id == SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID:
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record.supported_features = ControllerFeatures(
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attribute.value.value
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)
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records.append(record)
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return records
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# -----------------------------------------------------------------------------
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# -----------------------------------------------------------------------------
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def make_target_service_sdp_records(
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@dataclass
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service_record_handle: int,
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class TargetServiceSdpRecord:
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avctp_version: tuple[int, int] = (1, 4),
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service_record_handle: int
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avrcp_version: tuple[int, int] = (1, 6),
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avctp_version: tuple[int, int] = (1, 4)
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supported_features: int | TargetFeatures = 0x23,
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avrcp_version: tuple[int, int] = (1, 6)
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) -> list[ServiceAttribute]:
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supported_features: int | TargetFeatures = TargetFeatures(0x23)
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# TODO: support a way to compute the supported features from a feature list
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avctp_version_int = avctp_version[0] << 8 | avctp_version[1]
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avrcp_version_int = avrcp_version[0] << 8 | avrcp_version[1]
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attributes = [
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def to_service_attributes(self) -> list[ServiceAttribute]:
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ServiceAttribute(
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# TODO: support a way to compute the supported features from a feature list
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SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID,
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avctp_version_int = self.avctp_version[0] << 8 | self.avctp_version[1]
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DataElement.unsigned_integer_32(service_record_handle),
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avrcp_version_int = self.avrcp_version[0] << 8 | self.avrcp_version[1]
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),
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ServiceAttribute(
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attributes = [
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SDP_BROWSE_GROUP_LIST_ATTRIBUTE_ID,
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DataElement.sequence([DataElement.uuid(SDP_PUBLIC_BROWSE_ROOT)]),
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),
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ServiceAttribute(
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SDP_SERVICE_CLASS_ID_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
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[
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_TARGET_SERVICE),
|
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]
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),
|
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),
|
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ServiceAttribute(
|
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SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
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DataElement.sequence(
|
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[
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DataElement.sequence(
|
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[
|
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DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
|
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DataElement.unsigned_integer_16(avctp.AVCTP_PSM),
|
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]
|
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),
|
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DataElement.sequence(
|
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[
|
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DataElement.uuid(core.BT_AVCTP_PROTOCOL_ID),
|
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DataElement.unsigned_integer_16(avctp_version_int),
|
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]
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),
|
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]
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),
|
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),
|
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ServiceAttribute(
|
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SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID,
|
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DataElement.sequence(
|
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[
|
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DataElement.sequence(
|
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[
|
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DataElement.uuid(core.BT_AV_REMOTE_CONTROL_SERVICE),
|
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DataElement.unsigned_integer_16(avrcp_version_int),
|
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]
|
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),
|
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]
|
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),
|
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),
|
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ServiceAttribute(
|
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SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID,
|
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DataElement.unsigned_integer_16(supported_features),
|
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),
|
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]
|
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if supported_features & TargetFeatures.SUPPORTS_BROWSING:
|
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attributes.append(
|
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ServiceAttribute(
|
ServiceAttribute(
|
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SDP_ADDITIONAL_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
|
SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID,
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|
DataElement.unsigned_integer_32(self.service_record_handle),
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|
),
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|
ServiceAttribute(
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|
SDP_BROWSE_GROUP_LIST_ATTRIBUTE_ID,
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|
DataElement.sequence([DataElement.uuid(SDP_PUBLIC_BROWSE_ROOT)]),
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|
),
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|
ServiceAttribute(
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|
SDP_SERVICE_CLASS_ID_LIST_ATTRIBUTE_ID,
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|
DataElement.sequence(
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|
[
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|
DataElement.uuid(core.BT_AV_REMOTE_CONTROL_TARGET_SERVICE),
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||||||
|
]
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|
),
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|
),
|
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|
ServiceAttribute(
|
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|
SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
|
||||||
DataElement.sequence(
|
DataElement.sequence(
|
||||||
[
|
[
|
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DataElement.sequence(
|
DataElement.sequence(
|
||||||
[
|
[
|
||||||
DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
|
DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
|
||||||
DataElement.unsigned_integer_16(
|
DataElement.unsigned_integer_16(avctp.AVCTP_PSM),
|
||||||
avctp.AVCTP_BROWSING_PSM
|
|
||||||
),
|
|
||||||
]
|
]
|
||||||
),
|
),
|
||||||
DataElement.sequence(
|
DataElement.sequence(
|
||||||
@@ -373,8 +377,90 @@ def make_target_service_sdp_records(
|
|||||||
]
|
]
|
||||||
),
|
),
|
||||||
),
|
),
|
||||||
)
|
ServiceAttribute(
|
||||||
return attributes
|
SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID,
|
||||||
|
DataElement.sequence(
|
||||||
|
[
|
||||||
|
DataElement.sequence(
|
||||||
|
[
|
||||||
|
DataElement.uuid(core.BT_AV_REMOTE_CONTROL_SERVICE),
|
||||||
|
DataElement.unsigned_integer_16(avrcp_version_int),
|
||||||
|
]
|
||||||
|
),
|
||||||
|
]
|
||||||
|
),
|
||||||
|
),
|
||||||
|
ServiceAttribute(
|
||||||
|
SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID,
|
||||||
|
DataElement.unsigned_integer_16(self.supported_features),
|
||||||
|
),
|
||||||
|
]
|
||||||
|
if self.supported_features & TargetFeatures.SUPPORTS_BROWSING:
|
||||||
|
attributes.append(
|
||||||
|
ServiceAttribute(
|
||||||
|
SDP_ADDITIONAL_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
|
||||||
|
DataElement.sequence(
|
||||||
|
[
|
||||||
|
DataElement.sequence(
|
||||||
|
[
|
||||||
|
DataElement.uuid(core.BT_L2CAP_PROTOCOL_ID),
|
||||||
|
DataElement.unsigned_integer_16(
|
||||||
|
avctp.AVCTP_BROWSING_PSM
|
||||||
|
),
|
||||||
|
]
|
||||||
|
),
|
||||||
|
DataElement.sequence(
|
||||||
|
[
|
||||||
|
DataElement.uuid(core.BT_AVCTP_PROTOCOL_ID),
|
||||||
|
DataElement.unsigned_integer_16(avctp_version_int),
|
||||||
|
]
|
||||||
|
),
|
||||||
|
]
|
||||||
|
),
|
||||||
|
),
|
||||||
|
)
|
||||||
|
return attributes
|
||||||
|
|
||||||
|
@classmethod
|
||||||
|
async def find(cls, connection: Connection) -> list[TargetServiceSdpRecord]:
|
||||||
|
async with sdp.Client(connection) as sdp_client:
|
||||||
|
search_result = await sdp_client.search_attributes(
|
||||||
|
uuids=[core.BT_AV_REMOTE_CONTROL_TARGET_SERVICE],
|
||||||
|
attribute_ids=[
|
||||||
|
SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID,
|
||||||
|
SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID,
|
||||||
|
SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID,
|
||||||
|
SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID,
|
||||||
|
],
|
||||||
|
)
|
||||||
|
|
||||||
|
records: list[TargetServiceSdpRecord] = []
|
||||||
|
for attribute_lists in search_result:
|
||||||
|
record = cls(0)
|
||||||
|
for attribute in attribute_lists:
|
||||||
|
if attribute.id == SDP_SERVICE_RECORD_HANDLE_ATTRIBUTE_ID:
|
||||||
|
record.service_record_handle = attribute.value.value
|
||||||
|
elif attribute.id == SDP_PROTOCOL_DESCRIPTOR_LIST_ATTRIBUTE_ID:
|
||||||
|
# [[L2CAP, PSM], [AVCTP, version]]
|
||||||
|
record.avctp_version = (
|
||||||
|
attribute.value.value[1].value[1].value >> 8,
|
||||||
|
attribute.value.value[1].value[1].value & 0xFF,
|
||||||
|
)
|
||||||
|
elif (
|
||||||
|
attribute.id
|
||||||
|
== SDP_BLUETOOTH_PROFILE_DESCRIPTOR_LIST_ATTRIBUTE_ID
|
||||||
|
):
|
||||||
|
# [[AV_REMOTE_CONTROL, version]]
|
||||||
|
record.avrcp_version = (
|
||||||
|
attribute.value.value[0].value[1].value >> 8,
|
||||||
|
attribute.value.value[0].value[1].value & 0xFF,
|
||||||
|
)
|
||||||
|
elif attribute.id == SDP_SUPPORTED_FEATURES_ATTRIBUTE_ID:
|
||||||
|
record.supported_features = TargetFeatures(
|
||||||
|
attribute.value.value
|
||||||
|
)
|
||||||
|
records.append(record)
|
||||||
|
return records
|
||||||
|
|
||||||
|
|
||||||
# -----------------------------------------------------------------------------
|
# -----------------------------------------------------------------------------
|
||||||
|
|||||||
@@ -44,10 +44,10 @@ def sdp_records():
|
|||||||
a2dp_sink_service_record_handle
|
a2dp_sink_service_record_handle
|
||||||
),
|
),
|
||||||
avrcp_controller_service_record_handle: avrcp.make_controller_service_sdp_records(
|
avrcp_controller_service_record_handle: avrcp.make_controller_service_sdp_records(
|
||||||
avrcp_controller_service_record_handle
|
avrcp.ControllerServiceSdpRecord(avrcp_controller_service_record_handle)
|
||||||
),
|
),
|
||||||
avrcp_target_service_record_handle: avrcp.make_target_service_sdp_records(
|
avrcp_target_service_record_handle: avrcp.make_target_service_sdp_records(
|
||||||
avrcp_controller_service_record_handle
|
avrcp.TargetServiceSdpRecord(avrcp_target_service_record_handle)
|
||||||
),
|
),
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -423,6 +423,47 @@ def test_passthrough_commands():
|
|||||||
assert bytes(parsed) == play_pressed_bytes
|
assert bytes(parsed) == play_pressed_bytes
|
||||||
|
|
||||||
|
|
||||||
|
# -----------------------------------------------------------------------------
|
||||||
|
@pytest.mark.asyncio
|
||||||
|
async def test_find_sdp_records():
|
||||||
|
two_devices = await TwoDevices.create_with_avdtp()
|
||||||
|
|
||||||
|
# Add SDP records to device 1
|
||||||
|
controller_record = avrcp.ControllerServiceSdpRecord(
|
||||||
|
service_record_handle=0x10001,
|
||||||
|
avctp_version=(1, 4),
|
||||||
|
avrcp_version=(1, 6),
|
||||||
|
supported_features=(
|
||||||
|
avrcp.ControllerFeatures.CATEGORY_1
|
||||||
|
| avrcp.ControllerFeatures.SUPPORTS_BROWSING
|
||||||
|
),
|
||||||
|
)
|
||||||
|
target_record = avrcp.TargetServiceSdpRecord(
|
||||||
|
service_record_handle=0x10002,
|
||||||
|
avctp_version=(1, 4),
|
||||||
|
avrcp_version=(1, 6),
|
||||||
|
supported_features=(
|
||||||
|
avrcp.TargetFeatures.CATEGORY_1 | avrcp.TargetFeatures.SUPPORTS_BROWSING
|
||||||
|
),
|
||||||
|
)
|
||||||
|
|
||||||
|
two_devices.devices[1].sdp_service_records = {
|
||||||
|
0x10001: controller_record.to_service_attributes(),
|
||||||
|
0x10002: target_record.to_service_attributes(),
|
||||||
|
}
|
||||||
|
|
||||||
|
# Find records from device 0
|
||||||
|
controller_records = await avrcp.ControllerServiceSdpRecord.find(
|
||||||
|
two_devices.connections[0]
|
||||||
|
)
|
||||||
|
assert len(controller_records) == 1
|
||||||
|
assert controller_records[0] == controller_record
|
||||||
|
|
||||||
|
target_records = await avrcp.TargetServiceSdpRecord.find(two_devices.connections[0])
|
||||||
|
assert len(target_records) == 1
|
||||||
|
assert target_records[0] == target_record
|
||||||
|
|
||||||
|
|
||||||
# -----------------------------------------------------------------------------
|
# -----------------------------------------------------------------------------
|
||||||
@pytest.mark.asyncio
|
@pytest.mark.asyncio
|
||||||
async def test_get_supported_events():
|
async def test_get_supported_events():
|
||||||
|
|||||||
Reference in New Issue
Block a user