524 lines
20 KiB
C++
524 lines
20 KiB
C++
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/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "BTAudioCodecsAidl"
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#include "BluetoothAudioCodecs.h"
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#include <aidl/android/hardware/bluetooth/audio/AacCapabilities.h>
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#include <aidl/android/hardware/bluetooth/audio/AacObjectType.h>
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#include <aidl/android/hardware/bluetooth/audio/AptxCapabilities.h>
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#include <aidl/android/hardware/bluetooth/audio/ChannelMode.h>
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#include <aidl/android/hardware/bluetooth/audio/LdacCapabilities.h>
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#include <aidl/android/hardware/bluetooth/audio/LdacChannelMode.h>
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#include <aidl/android/hardware/bluetooth/audio/LdacQualityIndex.h>
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#include <aidl/android/hardware/bluetooth/audio/LeAudioConfiguration.h>
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#include <aidl/android/hardware/bluetooth/audio/OpusCapabilities.h>
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#include <aidl/android/hardware/bluetooth/audio/OpusConfiguration.h>
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#include <aidl/android/hardware/bluetooth/audio/SbcCapabilities.h>
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#include <aidl/android/hardware/bluetooth/audio/SbcChannelMode.h>
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#include <android-base/logging.h>
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace bluetooth {
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namespace audio {
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static const PcmCapabilities kDefaultSoftwarePcmCapabilities = {
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.sampleRateHz = {16000, 24000, 32000, 44100, 48000, 88200, 96000},
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.channelMode = {ChannelMode::MONO, ChannelMode::STEREO},
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.bitsPerSample = {16, 24, 32},
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.dataIntervalUs = {},
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};
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static const SbcCapabilities kDefaultOffloadSbcCapability = {
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.sampleRateHz = {44100},
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.channelMode = {SbcChannelMode::MONO, SbcChannelMode::JOINT_STEREO},
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.blockLength = {4, 8, 12, 16},
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.numSubbands = {8},
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.allocMethod = {SbcAllocMethod::ALLOC_MD_L},
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.bitsPerSample = {16},
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.minBitpool = 2,
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.maxBitpool = 53};
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static const AacCapabilities kDefaultOffloadAacCapability = {
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.objectType = {AacObjectType::MPEG2_LC},
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.sampleRateHz = {44100},
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.channelMode = {ChannelMode::STEREO},
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.variableBitRateSupported = true,
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.bitsPerSample = {16}};
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static const LdacCapabilities kDefaultOffloadLdacCapability = {
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.sampleRateHz = {44100, 48000, 88200, 96000},
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.channelMode = {LdacChannelMode::DUAL, LdacChannelMode::STEREO},
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.qualityIndex = {LdacQualityIndex::HIGH},
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.bitsPerSample = {16, 24, 32}};
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static const AptxCapabilities kDefaultOffloadAptxCapability = {
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.sampleRateHz = {44100, 48000},
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.channelMode = {ChannelMode::STEREO},
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.bitsPerSample = {16},
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};
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static const AptxCapabilities kDefaultOffloadAptxHdCapability = {
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.sampleRateHz = {44100, 48000},
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.channelMode = {ChannelMode::STEREO},
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.bitsPerSample = {24},
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};
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static const OpusCapabilities kDefaultOffloadOpusCapability = {
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.samplingFrequencyHz = {48000},
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.frameDurationUs = {10000, 20000},
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.channelMode = {ChannelMode::MONO, ChannelMode::STEREO},
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};
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const std::vector<CodecCapabilities> kDefaultOffloadA2dpCodecCapabilities = {
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{.codecType = CodecType::SBC, .capabilities = {}},
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{.codecType = CodecType::AAC, .capabilities = {}},
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{.codecType = CodecType::LDAC, .capabilities = {}},
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{.codecType = CodecType::APTX, .capabilities = {}},
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{.codecType = CodecType::APTX_HD, .capabilities = {}},
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{.codecType = CodecType::OPUS, .capabilities = {}}};
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std::vector<LeAudioCodecCapabilitiesSetting> kDefaultOffloadLeAudioCapabilities;
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static const UnicastCapability kInvalidUnicastCapability = {
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.codecType = CodecType::UNKNOWN};
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static const BroadcastCapability kInvalidBroadcastCapability = {
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.codecType = CodecType::UNKNOWN};
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// Default Supported Codecs
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// LC3 16_1: sample rate: 16 kHz, frame duration: 7.5 ms, octets per frame: 30
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static const Lc3Capabilities kLc3Capability_16_1 = {
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.samplingFrequencyHz = {16000},
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.frameDurationUs = {7500},
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.octetsPerFrame = {30}};
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// Default Supported Codecs
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// LC3 16_2: sample rate: 16 kHz, frame duration: 10 ms, octets per frame: 40
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static const Lc3Capabilities kLc3Capability_16_2 = {
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.samplingFrequencyHz = {16000},
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.frameDurationUs = {10000},
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.octetsPerFrame = {40}};
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// Default Supported Codecs
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// LC3 24_2: sample rate: 24 kHz, frame duration: 10 ms, octets per frame: 60
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static const Lc3Capabilities kLc3Capability_24_2 = {
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.samplingFrequencyHz = {24000},
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.frameDurationUs = {10000},
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.octetsPerFrame = {60}};
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// Default Supported Codecs
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// LC3 32_2: sample rate: 32 kHz, frame duration: 10 ms, octets per frame: 80
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static const Lc3Capabilities kLc3Capability_32_2 = {
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.samplingFrequencyHz = {32000},
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.frameDurationUs = {10000},
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.octetsPerFrame = {80}};
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// Default Supported Codecs
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// LC3 48_4: sample rate: 48 kHz, frame duration: 10 ms, octets per frame: 120
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static const Lc3Capabilities kLc3Capability_48_4 = {
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.samplingFrequencyHz = {48000},
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.frameDurationUs = {10000},
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.octetsPerFrame = {120}};
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static const std::vector<Lc3Capabilities> supportedLc3CapabilityList = {
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kLc3Capability_48_4, kLc3Capability_32_2, kLc3Capability_24_2,
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kLc3Capability_16_2, kLc3Capability_16_1};
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static AudioLocation stereoAudio = static_cast<AudioLocation>(
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static_cast<uint8_t>(AudioLocation::FRONT_LEFT) |
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static_cast<uint8_t>(AudioLocation::FRONT_RIGHT));
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static AudioLocation monoAudio = AudioLocation::UNKNOWN;
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// Stores the supported setting of audio location, connected device, and the
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// channel count for each device
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std::vector<std::tuple<AudioLocation, uint8_t, uint8_t>>
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supportedDeviceSetting = {
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// Stereo, two connected device, one for L one for R
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std::make_tuple(stereoAudio, 2, 1),
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// Stereo, one connected device for both L and R
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std::make_tuple(stereoAudio, 1, 2),
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// Mono
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std::make_tuple(monoAudio, 1, 1)};
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template <class T>
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bool BluetoothAudioCodecs::ContainedInVector(
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const std::vector<T>& vector, const typename identity<T>::type& target) {
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return std::find(vector.begin(), vector.end(), target) != vector.end();
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}
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bool BluetoothAudioCodecs::IsOffloadSbcConfigurationValid(
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const CodecConfiguration::CodecSpecific& codec_specific) {
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if (codec_specific.getTag() != CodecConfiguration::CodecSpecific::sbcConfig) {
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LOG(WARNING) << __func__
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<< ": Invalid CodecSpecific=" << codec_specific.toString();
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return false;
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}
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const SbcConfiguration sbc_data =
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codec_specific.get<CodecConfiguration::CodecSpecific::sbcConfig>();
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if (ContainedInVector(kDefaultOffloadSbcCapability.sampleRateHz,
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sbc_data.sampleRateHz) &&
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ContainedInVector(kDefaultOffloadSbcCapability.blockLength,
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sbc_data.blockLength) &&
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ContainedInVector(kDefaultOffloadSbcCapability.numSubbands,
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sbc_data.numSubbands) &&
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ContainedInVector(kDefaultOffloadSbcCapability.bitsPerSample,
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sbc_data.bitsPerSample) &&
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ContainedInVector(kDefaultOffloadSbcCapability.channelMode,
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sbc_data.channelMode) &&
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ContainedInVector(kDefaultOffloadSbcCapability.allocMethod,
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sbc_data.allocMethod) &&
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sbc_data.minBitpool <= sbc_data.maxBitpool &&
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kDefaultOffloadSbcCapability.minBitpool <= sbc_data.minBitpool &&
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kDefaultOffloadSbcCapability.maxBitpool >= sbc_data.maxBitpool) {
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return true;
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}
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LOG(WARNING) << __func__
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<< ": Unsupported CodecSpecific=" << codec_specific.toString();
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return false;
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}
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bool BluetoothAudioCodecs::IsOffloadAacConfigurationValid(
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const CodecConfiguration::CodecSpecific& codec_specific) {
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if (codec_specific.getTag() != CodecConfiguration::CodecSpecific::aacConfig) {
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LOG(WARNING) << __func__
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<< ": Invalid CodecSpecific=" << codec_specific.toString();
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return false;
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}
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const AacConfiguration aac_data =
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codec_specific.get<CodecConfiguration::CodecSpecific::aacConfig>();
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if (ContainedInVector(kDefaultOffloadAacCapability.sampleRateHz,
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aac_data.sampleRateHz) &&
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ContainedInVector(kDefaultOffloadAacCapability.bitsPerSample,
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aac_data.bitsPerSample) &&
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ContainedInVector(kDefaultOffloadAacCapability.channelMode,
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aac_data.channelMode) &&
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ContainedInVector(kDefaultOffloadAacCapability.objectType,
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aac_data.objectType) &&
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(!aac_data.variableBitRateEnabled ||
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kDefaultOffloadAacCapability.variableBitRateSupported)) {
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return true;
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}
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LOG(WARNING) << __func__
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<< ": Unsupported CodecSpecific=" << codec_specific.toString();
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return false;
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}
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bool BluetoothAudioCodecs::IsOffloadLdacConfigurationValid(
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const CodecConfiguration::CodecSpecific& codec_specific) {
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if (codec_specific.getTag() !=
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CodecConfiguration::CodecSpecific::ldacConfig) {
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LOG(WARNING) << __func__
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<< ": Invalid CodecSpecific=" << codec_specific.toString();
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return false;
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}
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const LdacConfiguration ldac_data =
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codec_specific.get<CodecConfiguration::CodecSpecific::ldacConfig>();
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if (ContainedInVector(kDefaultOffloadLdacCapability.sampleRateHz,
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ldac_data.sampleRateHz) &&
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ContainedInVector(kDefaultOffloadLdacCapability.bitsPerSample,
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ldac_data.bitsPerSample) &&
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ContainedInVector(kDefaultOffloadLdacCapability.channelMode,
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ldac_data.channelMode) &&
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ContainedInVector(kDefaultOffloadLdacCapability.qualityIndex,
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ldac_data.qualityIndex)) {
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return true;
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}
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LOG(WARNING) << __func__
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<< ": Unsupported CodecSpecific=" << codec_specific.toString();
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return false;
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}
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bool BluetoothAudioCodecs::IsOffloadAptxConfigurationValid(
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const CodecConfiguration::CodecSpecific& codec_specific) {
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if (codec_specific.getTag() !=
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CodecConfiguration::CodecSpecific::aptxConfig) {
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LOG(WARNING) << __func__
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<< ": Invalid CodecSpecific=" << codec_specific.toString();
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return false;
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}
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const AptxConfiguration aptx_data =
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codec_specific.get<CodecConfiguration::CodecSpecific::aptxConfig>();
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if (ContainedInVector(kDefaultOffloadAptxCapability.sampleRateHz,
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aptx_data.sampleRateHz) &&
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ContainedInVector(kDefaultOffloadAptxCapability.bitsPerSample,
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aptx_data.bitsPerSample) &&
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ContainedInVector(kDefaultOffloadAptxCapability.channelMode,
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aptx_data.channelMode)) {
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return true;
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}
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LOG(WARNING) << __func__
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<< ": Unsupported CodecSpecific=" << codec_specific.toString();
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return false;
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}
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bool BluetoothAudioCodecs::IsOffloadAptxHdConfigurationValid(
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const CodecConfiguration::CodecSpecific& codec_specific) {
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if (codec_specific.getTag() !=
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CodecConfiguration::CodecSpecific::aptxConfig) {
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LOG(WARNING) << __func__
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<< ": Invalid CodecSpecific=" << codec_specific.toString();
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return false;
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}
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const AptxConfiguration aptx_data =
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codec_specific.get<CodecConfiguration::CodecSpecific::aptxConfig>();
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if (ContainedInVector(kDefaultOffloadAptxHdCapability.sampleRateHz,
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aptx_data.sampleRateHz) &&
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ContainedInVector(kDefaultOffloadAptxHdCapability.bitsPerSample,
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aptx_data.bitsPerSample) &&
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ContainedInVector(kDefaultOffloadAptxHdCapability.channelMode,
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aptx_data.channelMode)) {
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return true;
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}
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LOG(WARNING) << __func__
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<< ": Unsupported CodecSpecific=" << codec_specific.toString();
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return false;
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}
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bool BluetoothAudioCodecs::IsOffloadOpusConfigurationValid(
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const CodecConfiguration::CodecSpecific& codec_specific) {
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if (codec_specific.getTag() !=
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CodecConfiguration::CodecSpecific::opusConfig) {
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LOG(WARNING) << __func__
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<< ": Invalid CodecSpecific=" << codec_specific.toString();
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return false;
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}
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std::optional<OpusConfiguration> opus_data =
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codec_specific.get<CodecConfiguration::CodecSpecific::opusConfig>();
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if (opus_data.has_value() &&
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ContainedInVector(kDefaultOffloadOpusCapability.samplingFrequencyHz,
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opus_data->samplingFrequencyHz) &&
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ContainedInVector(kDefaultOffloadOpusCapability.frameDurationUs,
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opus_data->frameDurationUs) &&
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ContainedInVector(kDefaultOffloadOpusCapability.channelMode,
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opus_data->channelMode)) {
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return true;
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}
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LOG(WARNING) << __func__
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<< ": Unsupported CodecSpecific=" << codec_specific.toString();
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return false;
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}
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bool BluetoothAudioCodecs::IsOffloadLeAudioConfigurationValid(
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const SessionType& session_type, const LeAudioConfiguration&) {
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if (session_type !=
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SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
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session_type !=
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SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH &&
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session_type !=
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SessionType::LE_AUDIO_BROADCAST_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
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return false;
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}
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return true;
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}
|
||
|
|
|
||
|
|
std::vector<PcmCapabilities>
|
||
|
|
BluetoothAudioCodecs::GetSoftwarePcmCapabilities() {
|
||
|
|
return {kDefaultSoftwarePcmCapabilities};
|
||
|
|
}
|
||
|
|
|
||
|
|
std::vector<CodecCapabilities>
|
||
|
|
BluetoothAudioCodecs::GetA2dpOffloadCodecCapabilities(
|
||
|
|
const SessionType& session_type) {
|
||
|
|
if (session_type != SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
|
||
|
|
session_type != SessionType::A2DP_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
|
||
|
|
return {};
|
||
|
|
}
|
||
|
|
std::vector<CodecCapabilities> offload_a2dp_codec_capabilities =
|
||
|
|
kDefaultOffloadA2dpCodecCapabilities;
|
||
|
|
for (auto& codec_capability : offload_a2dp_codec_capabilities) {
|
||
|
|
switch (codec_capability.codecType) {
|
||
|
|
case CodecType::SBC:
|
||
|
|
codec_capability.capabilities
|
||
|
|
.set<CodecCapabilities::Capabilities::sbcCapabilities>(
|
||
|
|
kDefaultOffloadSbcCapability);
|
||
|
|
break;
|
||
|
|
case CodecType::AAC:
|
||
|
|
codec_capability.capabilities
|
||
|
|
.set<CodecCapabilities::Capabilities::aacCapabilities>(
|
||
|
|
kDefaultOffloadAacCapability);
|
||
|
|
break;
|
||
|
|
case CodecType::LDAC:
|
||
|
|
codec_capability.capabilities
|
||
|
|
.set<CodecCapabilities::Capabilities::ldacCapabilities>(
|
||
|
|
kDefaultOffloadLdacCapability);
|
||
|
|
break;
|
||
|
|
case CodecType::APTX:
|
||
|
|
codec_capability.capabilities
|
||
|
|
.set<CodecCapabilities::Capabilities::aptxCapabilities>(
|
||
|
|
kDefaultOffloadAptxCapability);
|
||
|
|
break;
|
||
|
|
case CodecType::APTX_HD:
|
||
|
|
codec_capability.capabilities
|
||
|
|
.set<CodecCapabilities::Capabilities::aptxCapabilities>(
|
||
|
|
kDefaultOffloadAptxHdCapability);
|
||
|
|
break;
|
||
|
|
case CodecType::OPUS:
|
||
|
|
codec_capability.capabilities
|
||
|
|
.set<CodecCapabilities::Capabilities::opusCapabilities>(
|
||
|
|
kDefaultOffloadOpusCapability);
|
||
|
|
break;
|
||
|
|
case CodecType::UNKNOWN:
|
||
|
|
case CodecType::VENDOR:
|
||
|
|
case CodecType::LC3:
|
||
|
|
case CodecType::APTX_ADAPTIVE:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return offload_a2dp_codec_capabilities;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(
|
||
|
|
const PcmConfiguration& pcm_config) {
|
||
|
|
if (ContainedInVector(kDefaultSoftwarePcmCapabilities.sampleRateHz,
|
||
|
|
pcm_config.sampleRateHz) &&
|
||
|
|
ContainedInVector(kDefaultSoftwarePcmCapabilities.bitsPerSample,
|
||
|
|
pcm_config.bitsPerSample) &&
|
||
|
|
ContainedInVector(kDefaultSoftwarePcmCapabilities.channelMode,
|
||
|
|
pcm_config.channelMode)
|
||
|
|
// data interval is not checked for now
|
||
|
|
// && pcm_config.dataIntervalUs != 0
|
||
|
|
) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
LOG(WARNING) << __func__
|
||
|
|
<< ": Unsupported CodecSpecific=" << pcm_config.toString();
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool BluetoothAudioCodecs::IsOffloadCodecConfigurationValid(
|
||
|
|
const SessionType& session_type, const CodecConfiguration& codec_config) {
|
||
|
|
if (session_type != SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
|
||
|
|
session_type != SessionType::A2DP_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
|
||
|
|
LOG(ERROR) << __func__
|
||
|
|
<< ": Invalid SessionType=" << toString(session_type);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
const CodecConfiguration::CodecSpecific& codec_specific = codec_config.config;
|
||
|
|
switch (codec_config.codecType) {
|
||
|
|
case CodecType::SBC:
|
||
|
|
if (IsOffloadSbcConfigurationValid(codec_specific)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CodecType::AAC:
|
||
|
|
if (IsOffloadAacConfigurationValid(codec_specific)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CodecType::LDAC:
|
||
|
|
if (IsOffloadLdacConfigurationValid(codec_specific)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CodecType::APTX:
|
||
|
|
if (IsOffloadAptxConfigurationValid(codec_specific)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CodecType::APTX_HD:
|
||
|
|
if (IsOffloadAptxHdConfigurationValid(codec_specific)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CodecType::OPUS:
|
||
|
|
if (IsOffloadOpusConfigurationValid(codec_specific)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case CodecType::APTX_ADAPTIVE:
|
||
|
|
case CodecType::LC3:
|
||
|
|
case CodecType::UNKNOWN:
|
||
|
|
case CodecType::VENDOR:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
UnicastCapability composeUnicastLc3Capability(
|
||
|
|
AudioLocation audioLocation, uint8_t deviceCnt, uint8_t channelCount,
|
||
|
|
const Lc3Capabilities& capability) {
|
||
|
|
return {
|
||
|
|
.codecType = CodecType::LC3,
|
||
|
|
.supportedChannel = audioLocation,
|
||
|
|
.deviceCount = deviceCnt,
|
||
|
|
.channelCountPerDevice = channelCount,
|
||
|
|
.leAudioCodecCapabilities =
|
||
|
|
UnicastCapability::LeAudioCodecCapabilities(capability),
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
std::vector<LeAudioCodecCapabilitiesSetting>
|
||
|
|
BluetoothAudioCodecs::GetLeAudioOffloadCodecCapabilities(
|
||
|
|
const SessionType& session_type) {
|
||
|
|
if (session_type !=
|
||
|
|
SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
|
||
|
|
session_type !=
|
||
|
|
SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH &&
|
||
|
|
session_type !=
|
||
|
|
SessionType::LE_AUDIO_BROADCAST_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
|
||
|
|
return std::vector<LeAudioCodecCapabilitiesSetting>(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (kDefaultOffloadLeAudioCapabilities.empty()) {
|
||
|
|
for (auto [audioLocation, deviceCnt, channelCount] :
|
||
|
|
supportedDeviceSetting) {
|
||
|
|
for (auto capability : supportedLc3CapabilityList) {
|
||
|
|
UnicastCapability lc3Capability = composeUnicastLc3Capability(
|
||
|
|
audioLocation, deviceCnt, channelCount, capability);
|
||
|
|
UnicastCapability lc3MonoDecodeCapability =
|
||
|
|
composeUnicastLc3Capability(monoAudio, 1, 1, capability);
|
||
|
|
|
||
|
|
// Adds the capability for encode only
|
||
|
|
kDefaultOffloadLeAudioCapabilities.push_back(
|
||
|
|
{.unicastEncodeCapability = lc3Capability,
|
||
|
|
.unicastDecodeCapability = kInvalidUnicastCapability,
|
||
|
|
.broadcastCapability = kInvalidBroadcastCapability});
|
||
|
|
|
||
|
|
// Adds the capability for decode only
|
||
|
|
kDefaultOffloadLeAudioCapabilities.push_back(
|
||
|
|
{.unicastEncodeCapability = kInvalidUnicastCapability,
|
||
|
|
.unicastDecodeCapability = lc3Capability,
|
||
|
|
.broadcastCapability = kInvalidBroadcastCapability});
|
||
|
|
|
||
|
|
// Adds the capability for the case that encode and decode exist at the
|
||
|
|
// same time
|
||
|
|
kDefaultOffloadLeAudioCapabilities.push_back(
|
||
|
|
{.unicastEncodeCapability = lc3Capability,
|
||
|
|
.unicastDecodeCapability = lc3MonoDecodeCapability,
|
||
|
|
.broadcastCapability = kInvalidBroadcastCapability});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return kDefaultOffloadLeAudioCapabilities;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace audio
|
||
|
|
} // namespace bluetooth
|
||
|
|
} // namespace hardware
|
||
|
|
} // namespace android
|
||
|
|
} // namespace aidl
|