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# Copyright 2023 The Pigweed Authors
#
# 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.
# This file contains Emboss packet definitions for extensions to the Bluetooth
# Host-Controller interface. These extensions are not standardized through the
# Bluetooth SIG.
#
# NOTE: The definitions below are incomplete. They get added as needed.
# This list will grow as we support more vendor features.
import "hci.emb" as hci
[$default byte_order: "LittleEndian"]
[(cpp) namespace: "pw::bluetooth::emboss"]
# ======================= Android HCI extensions ========================
# Documentation: https://source.android.com/devices/bluetooth/hci_requirements
enum Capability:
[maximum_bits: 8]
NOT_CAPABLE = 0x00
CAPABLE = 0x01
bits AudioCodecSupportMask:
0 [+1] Flag sbc
1 [+1] Flag aac
2 [+1] Flag aptx
3 [+1] Flag aptx_hd
4 [+1] Flag ldac
# ============ Commands ============
struct LEMultiAdvtEnableCommand:
-- LE multi-advertising enable command.
let hdr_size = hci.CommandHeader.$size_in_bytes
0 [+hdr_size] hci.CommandHeader header
$next [+1] UInt opcode
$next [+1] hci.GenericEnableParam enable
$next [+1] UInt advertising_handle
struct LEGetVendorCapabilitiesCommand:
let hdr_size = hci.CommandHeader.$size_in_bytes
0 [+hdr_size] hci.CommandHeader header
# ============ Events ============
struct LEMultiAdvtStateChangeSubevent:
-- LE multi-advertising state change subevent.
0 [+hci.VendorDebugEvent.$size_in_bytes] hci.VendorDebugEvent vendor_event
$next [+1] UInt advertising_handle
-- Handle used to identify an advertising set.
$next [+1] hci.StatusCode status
-- Reason for state change. Currently will always be 0x00.
-- 0x00: Connection received.
$next [+2] UInt connection_handle
-- Handle used to identify the connection that caused the state change (i.e.
-- advertising instance to be disabled). Value will be 0xFFFF if invalid.
struct LEGetVendorCapabilitiesCommandCompleteEvent:
let hdr_size = hci.CommandCompleteEvent.$size_in_bytes
0 [+hdr_size] hci.CommandCompleteEvent command_complete
$next [+1] hci.StatusCode status
$next [+1] UInt max_advt_instances
-- Number of advertisement instances supported
-- Deprecated in Google feature spec v0.98 and higher
$next [+1] Capability offloaded_resolution_of_private_address
-- BT chip capability of RPA
-- Deprecated in Google feature spec v0.98 and higher
$next [+2] UInt total_scan_results_storage
-- Storage for scan results in bytes
$next [+1] UInt max_irk_list_sz
-- Number of IRK entries supported in the firmware
$next [+1] Capability filtering_support
-- Support for filtering in the controller
$next [+1] UInt max_filter
-- Number of filters supported
$next [+1] Capability activity_energy_info_support
-- Supports reporting of activity and energy information
$next [+2] bits version_supported:
-- Specifies the version of the Google feature spec supported
0 [+8] UInt major_number
$next [+8] UInt minor_number
$next [+2] UInt total_num_of_advt_tracked
-- Total number of advertisers tracked for OnLost/OnFound purposes
$next [+1] Capability extended_scan_support
-- Supports extended scan window and interval
$next [+1] Capability debug_logging_supported
-- Supports logging of binary debug information from controller
$next [+1] Capability le_address_generation_offloading_support
-- Deprecated in Google feature spec v0.98 and higher
$next [+4] bits:
0 [+5] AudioCodecSupportMask a2dp_source_offload_capability_mask
$next [+1] Capability bluetooth_quality_report_support
-- Supports reporting of Bluetooth Quality events
$next [+4] bits:
0 [+5] AudioCodecSupportMask dynamic_audio_buffer_support
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