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499 lines
18 KiB
499 lines
18 KiB
/* |
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* Copyright 2019 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 "BTAudioClientIf" |
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#include "client_interface.h" |
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#include <android/hardware/bluetooth/audio/2.0/IBluetoothAudioPort.h> |
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#include <android/hardware/bluetooth/audio/2.0/IBluetoothAudioProvidersFactory.h> |
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#include <android/hidl/manager/1.2/IServiceManager.h> |
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#include <base/logging.h> |
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#include <hidl/MQDescriptor.h> |
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#include <hidl/ServiceManagement.h> |
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#include <future> |
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#include "osi/include/log.h" |
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namespace bluetooth { |
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namespace audio { |
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using ::android::hardware::hidl_vec; |
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using ::android::hardware::Return; |
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using ::android::hardware::Void; |
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using ::android::hardware::audio::common::V5_0::SourceMetadata; |
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using ::android::hardware::bluetooth::audio::V2_0::IBluetoothAudioPort; |
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using ::android::hardware::bluetooth::audio::V2_0:: |
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IBluetoothAudioProvidersFactory; |
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using DataMQ = ::android::hardware::MessageQueue< |
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uint8_t, ::android::hardware::kSynchronizedReadWrite>; |
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static constexpr int kDefaultDataReadTimeoutMs = 10; // 10 ms |
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static constexpr int kDefaultDataReadPollIntervalMs = 1; // non-blocking poll |
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static constexpr char kFullyQualifiedInterfaceName[] = |
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"android.hardware.bluetooth.audio@2.0::IBluetoothAudioProvidersFactory"; |
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std::ostream& operator<<(std::ostream& os, const BluetoothAudioCtrlAck& ack) { |
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switch (ack) { |
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case BluetoothAudioCtrlAck::SUCCESS_FINISHED: |
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return os << "SUCCESS_FINISHED"; |
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case BluetoothAudioCtrlAck::PENDING: |
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return os << "PENDING"; |
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case BluetoothAudioCtrlAck::FAILURE_UNSUPPORTED: |
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return os << "FAILURE_UNSUPPORTED"; |
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case BluetoothAudioCtrlAck::FAILURE_BUSY: |
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return os << "FAILURE_BUSY"; |
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case BluetoothAudioCtrlAck::FAILURE_DISCONNECTING: |
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return os << "FAILURE_DISCONNECTING"; |
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case BluetoothAudioCtrlAck::FAILURE: |
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return os << "FAILURE"; |
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default: |
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return os << "UNDEFINED " << static_cast<int8_t>(ack); |
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} |
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} |
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// Internal class within BluetoothAudioClientInterfaceace to implement |
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// IBluetoothAudioPort (control interface used by Bluetooth Audio HAL) |
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class BluetoothAudioPortImpl : public IBluetoothAudioPort { |
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public: |
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BluetoothAudioPortImpl(IBluetoothTransportInstance* sink, |
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const android::sp<IBluetoothAudioProvider>& provider) |
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: sink_(sink), provider_(provider){}; |
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Return<void> startStream() { |
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BluetoothAudioCtrlAck ack = sink_->StartRequest(); |
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if (ack != BluetoothAudioCtrlAck::PENDING) { |
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auto hidl_retval = |
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provider_->streamStarted(BluetoothAudioCtrlAckToHalStatus(ack)); |
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if (!hidl_retval.isOk()) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal failure: " << hidl_retval.description(); |
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} |
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} |
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return Void(); |
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} |
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Return<void> suspendStream() { |
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BluetoothAudioCtrlAck ack = sink_->SuspendRequest(); |
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if (ack != BluetoothAudioCtrlAck::PENDING) { |
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auto hidl_retval = |
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provider_->streamSuspended(BluetoothAudioCtrlAckToHalStatus(ack)); |
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if (!hidl_retval.isOk()) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal failure: " << hidl_retval.description(); |
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} |
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} |
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return Void(); |
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} |
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Return<void> stopStream() { |
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sink_->StopRequest(); |
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return Void(); |
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} |
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Return<void> getPresentationPosition(getPresentationPosition_cb _hidl_cb) { |
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uint64_t remote_delay_report_ns; |
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uint64_t total_bytes_read; |
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timespec data_position; |
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bool retval = sink_->GetPresentationPosition( |
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&remote_delay_report_ns, &total_bytes_read, &data_position); |
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TimeSpec transmittedOctetsTimeStamp; |
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if (retval) { |
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transmittedOctetsTimeStamp = timespec_convert_to_hal(data_position); |
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} else { |
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remote_delay_report_ns = 0; |
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total_bytes_read = 0; |
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transmittedOctetsTimeStamp = {}; |
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} |
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VLOG(2) << __func__ << ": result=" << retval |
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<< ", delay=" << remote_delay_report_ns |
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<< ", data=" << total_bytes_read |
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<< " byte(s), timestamp=" << toString(transmittedOctetsTimeStamp); |
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_hidl_cb((retval ? BluetoothAudioStatus::SUCCESS |
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: BluetoothAudioStatus::FAILURE), |
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remote_delay_report_ns, total_bytes_read, |
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transmittedOctetsTimeStamp); |
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return Void(); |
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} |
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Return<void> updateMetadata(const SourceMetadata& sourceMetadata) { |
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LOG(INFO) << __func__ << ": " << sourceMetadata.tracks.size() |
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<< " track(s)"; |
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// refer to StreamOut.impl.h within Audio HAL (AUDIO_HAL_VERSION_5_0) |
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std::vector<playback_track_metadata> metadata_vec; |
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metadata_vec.reserve(sourceMetadata.tracks.size()); |
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for (const auto& metadata : sourceMetadata.tracks) { |
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metadata_vec.push_back({ |
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.usage = static_cast<audio_usage_t>(metadata.usage), |
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.content_type = |
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static_cast<audio_content_type_t>(metadata.contentType), |
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.gain = metadata.gain, |
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}); |
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} |
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const source_metadata_t source_metadata = { |
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.track_count = metadata_vec.size(), .tracks = metadata_vec.data()}; |
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sink_->MetadataChanged(source_metadata); |
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return Void(); |
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} |
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private: |
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IBluetoothTransportInstance* sink_; |
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const android::sp<IBluetoothAudioProvider> provider_; |
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TimeSpec timespec_convert_to_hal(const timespec& ts) { |
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return {.tvSec = static_cast<uint64_t>(ts.tv_sec), |
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.tvNSec = static_cast<uint64_t>(ts.tv_nsec)}; |
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} |
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}; |
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class BluetoothAudioDeathRecipient |
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: public ::android::hardware::hidl_death_recipient { |
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public: |
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BluetoothAudioDeathRecipient( |
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BluetoothAudioClientInterface* clientif, |
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bluetooth::common::MessageLoopThread* message_loop) |
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: bluetooth_audio_clientif_(clientif), message_loop_(message_loop) {} |
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void serviceDied( |
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uint64_t /*cookie*/, |
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const ::android::wp<::android::hidl::base::V1_0::IBase>& /*who*/) { |
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LOG(WARNING) << __func__ << ": restarting connection with new Audio Hal"; |
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if (bluetooth_audio_clientif_ != nullptr && message_loop_ != nullptr) { |
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// restart the session on the correct thread |
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message_loop_->DoInThread( |
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FROM_HERE, |
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base::BindOnce( |
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&BluetoothAudioClientInterface::RenewAudioProviderAndSession, |
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base::Unretained(bluetooth_audio_clientif_))); |
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} else { |
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LOG(ERROR) << __func__ << ": BluetoothAudioClientInterface corrupted"; |
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} |
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} |
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private: |
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BluetoothAudioClientInterface* bluetooth_audio_clientif_; |
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bluetooth::common::MessageLoopThread* message_loop_; |
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}; |
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BluetoothAudioClientInterface::BluetoothAudioClientInterface(IBluetoothTransportInstance* sink, |
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bluetooth::common::MessageLoopThread* message_loop) |
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: sink_(sink), provider_(nullptr), session_started_(false), mDataMQ(nullptr), |
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death_recipient_(new BluetoothAudioDeathRecipient(this, message_loop)) { |
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auto service_manager = android::hardware::defaultServiceManager1_2(); |
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CHECK(service_manager != nullptr); |
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size_t instance_count = 0; |
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auto listManifestByInterface_cb = [&instance_count](const hidl_vec<android::hardware::hidl_string>& instanceNames) { |
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instance_count = instanceNames.size(); |
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LOG(INFO) << "listManifestByInterface_cb returns " << instance_count << " instance(s)"; |
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}; |
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auto hidl_retval = service_manager->listManifestByInterface(kFullyQualifiedInterfaceName, listManifestByInterface_cb); |
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if (!hidl_retval.isOk()) { |
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LOG(FATAL) << __func__ << ": IServiceManager::listByInterface failure: " << hidl_retval.description(); |
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} |
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if (instance_count > 0) { |
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fetch_audio_provider(); |
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} else { |
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LOG(WARNING) << "IBluetoothAudioProvidersFactory not declared"; |
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} |
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} |
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BluetoothAudioClientInterface::~BluetoothAudioClientInterface() { |
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if (provider_ != nullptr) { |
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auto hidl_retval = provider_->unlinkToDeath(death_recipient_); |
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if (!hidl_retval.isOk()) { |
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LOG(FATAL) << __func__ << ": BluetoothAudioDeathRecipient failure: " << hidl_retval.description(); |
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} |
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} |
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} |
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std::vector<AudioCapabilities> |
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BluetoothAudioClientInterface::GetAudioCapabilities() const { |
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return capabilities_; |
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} |
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void BluetoothAudioClientInterface::fetch_audio_provider() { |
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if (provider_ != nullptr) { |
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LOG(WARNING) << __func__ << ": reflash"; |
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} |
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android::sp<IBluetoothAudioProvidersFactory> providersFactory = |
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IBluetoothAudioProvidersFactory::getService(); |
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CHECK(providersFactory != nullptr) << "IBluetoothAudioProvidersFactory::getService() failed"; |
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LOG(INFO) << "IBluetoothAudioProvidersFactory::getService() returned " |
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<< providersFactory.get() |
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<< (providersFactory->isRemote() ? " (remote)" : " (local)"); |
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std::promise<void> getProviderCapabilities_promise; |
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auto getProviderCapabilities_future = |
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getProviderCapabilities_promise.get_future(); |
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auto getProviderCapabilities_cb = |
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[& capabilities = this->capabilities_, &getProviderCapabilities_promise]( |
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const hidl_vec<AudioCapabilities>& audioCapabilities) { |
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for (auto capability : audioCapabilities) { |
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capabilities.push_back(capability); |
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} |
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getProviderCapabilities_promise.set_value(); |
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}; |
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auto hidl_retval = providersFactory->getProviderCapabilities( |
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sink_->GetSessionType(), getProviderCapabilities_cb); |
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getProviderCapabilities_future.get(); |
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if (!hidl_retval.isOk()) { |
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LOG(FATAL) << __func__ << ": BluetoothAudioHal::getProviderCapabilities failure: " << hidl_retval.description(); |
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return; |
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} |
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if (capabilities_.empty()) { |
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LOG(WARNING) << __func__ |
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<< ": SessionType=" << toString(sink_->GetSessionType()) |
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<< " Not supported by BluetoothAudioHal"; |
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return; |
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} |
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LOG(INFO) << __func__ << ": BluetoothAudioHal SessionType=" |
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<< toString(sink_->GetSessionType()) << " has " |
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<< capabilities_.size() << " AudioCapabilities"; |
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std::promise<void> openProvider_promise; |
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auto openProvider_future = openProvider_promise.get_future(); |
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auto openProvider_cb = |
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[& provider_ = this->provider_, &openProvider_promise]( |
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BluetoothAudioStatus status, |
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const android::sp<IBluetoothAudioProvider>& provider) { |
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LOG(INFO) << "openProvider_cb(" << toString(status) << ")"; |
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if (status == BluetoothAudioStatus::SUCCESS) { |
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provider_ = provider; |
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} |
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ALOGE_IF(!provider_, "Failed to open BluetoothAudio provider"); |
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openProvider_promise.set_value(); |
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}; |
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hidl_retval = |
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providersFactory->openProvider(sink_->GetSessionType(), openProvider_cb); |
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openProvider_future.get(); |
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if (!hidl_retval.isOk()) { |
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LOG(FATAL) << __func__ << ": BluetoothAudioHal::openProvider failure: " << hidl_retval.description(); |
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} |
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CHECK(provider_ != nullptr); |
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if (!provider_->linkToDeath(death_recipient_, 0).isOk()) { |
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LOG(FATAL) << __func__ << ": BluetoothAudioDeathRecipient failure: " << hidl_retval.description(); |
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} |
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LOG(INFO) << "IBluetoothAudioProvidersFactory::openProvider() returned " |
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<< provider_.get() |
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<< (provider_->isRemote() ? " (remote)" : " (local)"); |
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} |
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bool BluetoothAudioClientInterface::UpdateAudioConfig( |
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const AudioConfiguration& audio_config) { |
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bool is_software_session = |
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(sink_->GetSessionType() == |
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SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH || |
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sink_->GetSessionType() == |
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SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH); |
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bool is_offload_session = |
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(sink_->GetSessionType() == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH); |
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auto audio_config_discriminator = audio_config.getDiscriminator(); |
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bool is_software_audio_config = |
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(is_software_session && |
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audio_config_discriminator == |
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AudioConfiguration::hidl_discriminator::pcmConfig); |
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bool is_offload_audio_config = |
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(is_offload_session && |
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audio_config_discriminator == |
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AudioConfiguration::hidl_discriminator::codecConfig); |
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if (!is_software_audio_config && !is_offload_audio_config) { |
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return false; |
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} |
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sink_->UpdateAudioConfiguration(audio_config); |
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return true; |
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} |
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int BluetoothAudioClientInterface::StartSession() { |
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std::lock_guard<std::mutex> guard(internal_mutex_); |
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if (provider_ == nullptr) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal nullptr"; |
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session_started_ = false; |
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return -EINVAL; |
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} |
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if (session_started_) { |
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LOG(ERROR) << __func__ << ": session started already"; |
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return -EBUSY; |
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} |
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android::sp<IBluetoothAudioPort> stack_if = |
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new BluetoothAudioPortImpl(sink_, provider_); |
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std::unique_ptr<DataMQ> tempDataMQ; |
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BluetoothAudioStatus session_status; |
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std::promise<void> hidl_startSession_promise; |
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auto hidl_startSession_future = hidl_startSession_promise.get_future(); |
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auto hidl_cb = [&session_status, &tempDataMQ, &hidl_startSession_promise]( |
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BluetoothAudioStatus status, |
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const DataMQ::Descriptor& dataMQ) { |
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LOG(INFO) << "startSession_cb(" << toString(status) << ")"; |
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session_status = status; |
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if (status == BluetoothAudioStatus::SUCCESS && dataMQ.isHandleValid()) { |
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tempDataMQ.reset(new DataMQ(dataMQ)); |
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} |
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hidl_startSession_promise.set_value(); |
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}; |
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auto hidl_retval = provider_->startSession( |
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stack_if, sink_->GetAudioConfiguration(), hidl_cb); |
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hidl_startSession_future.get(); |
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if (!hidl_retval.isOk()) { |
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LOG(FATAL) << __func__ << ": BluetoothAudioHal failure: " << hidl_retval.description(); |
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return -EPROTO; |
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} |
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if (tempDataMQ && tempDataMQ->isValid()) { |
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mDataMQ = std::move(tempDataMQ); |
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} else if (sink_->GetSessionType() == |
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SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH && |
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session_status == BluetoothAudioStatus::SUCCESS) { |
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sink_->ResetPresentationPosition(); |
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session_started_ = true; |
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return 0; |
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} |
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if (mDataMQ && mDataMQ->isValid()) { |
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sink_->ResetPresentationPosition(); |
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session_started_ = true; |
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return 0; |
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} else { |
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ALOGE_IF(!mDataMQ, "Failed to obtain audio data path"); |
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ALOGE_IF(mDataMQ && !mDataMQ->isValid(), "Audio data path is invalid"); |
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session_started_ = false; |
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return -EIO; |
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} |
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} |
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void BluetoothAudioClientInterface::StreamStarted( |
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const BluetoothAudioCtrlAck& ack) { |
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if (provider_ == nullptr) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal nullptr"; |
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return; |
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} |
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if (ack == BluetoothAudioCtrlAck::PENDING) { |
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LOG(INFO) << __func__ << ": " << ack << " ignored"; |
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return; |
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} |
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BluetoothAudioStatus status = BluetoothAudioCtrlAckToHalStatus(ack); |
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auto hidl_retval = provider_->streamStarted(status); |
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if (!hidl_retval.isOk()) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal failure: " << hidl_retval.description(); |
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} |
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} |
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void BluetoothAudioClientInterface::StreamSuspended( |
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const BluetoothAudioCtrlAck& ack) { |
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if (provider_ == nullptr) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal nullptr"; |
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return; |
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} |
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if (ack == BluetoothAudioCtrlAck::PENDING) { |
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LOG(INFO) << __func__ << ": " << ack << " ignored"; |
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return; |
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} |
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BluetoothAudioStatus status = BluetoothAudioCtrlAckToHalStatus(ack); |
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auto hidl_retval = provider_->streamSuspended(status); |
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if (!hidl_retval.isOk()) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal failure: " << hidl_retval.description(); |
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} |
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} |
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int BluetoothAudioClientInterface::EndSession() { |
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std::lock_guard<std::mutex> guard(internal_mutex_); |
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if (!session_started_) { |
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LOG(INFO) << __func__ << ": sessoin ended already"; |
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return 0; |
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} |
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session_started_ = false; |
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if (provider_ == nullptr) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal nullptr"; |
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return -EINVAL; |
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} |
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mDataMQ = nullptr; |
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auto hidl_retval = provider_->endSession(); |
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if (!hidl_retval.isOk()) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal failure: " << hidl_retval.description(); |
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return -EPROTO; |
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} |
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return 0; |
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} |
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size_t BluetoothAudioClientInterface::ReadAudioData(uint8_t* p_buf, |
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uint32_t len) { |
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if (provider_ == nullptr) { |
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LOG(ERROR) << __func__ << ": BluetoothAudioHal nullptr"; |
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return 0; |
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} |
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if (p_buf == nullptr || len == 0) return 0; |
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std::lock_guard<std::mutex> guard(internal_mutex_); |
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size_t total_read = 0; |
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int timeout_ms = kDefaultDataReadTimeoutMs; |
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do { |
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if (mDataMQ == nullptr || !mDataMQ->isValid()) break; |
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size_t avail_to_read = mDataMQ->availableToRead(); |
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if (avail_to_read) { |
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if (avail_to_read > len - total_read) { |
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avail_to_read = len - total_read; |
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} |
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if (mDataMQ->read(p_buf + total_read, avail_to_read) == 0) { |
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LOG(WARNING) << __func__ << ": len=" << len |
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<< " total_read=" << total_read << " failed"; |
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break; |
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} |
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total_read += avail_to_read; |
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} else if (timeout_ms >= kDefaultDataReadPollIntervalMs) { |
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std::this_thread::sleep_for( |
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std::chrono::milliseconds(kDefaultDataReadPollIntervalMs)); |
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timeout_ms -= kDefaultDataReadPollIntervalMs; |
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continue; |
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} else { |
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LOG(WARNING) << __func__ << ": " << (len - total_read) << "/" << len |
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<< " no data " << (kDefaultDataReadTimeoutMs - timeout_ms) |
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<< " ms"; |
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break; |
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} |
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} while (total_read < len); |
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if (timeout_ms < |
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(kDefaultDataReadTimeoutMs - kDefaultDataReadPollIntervalMs) && |
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timeout_ms >= kDefaultDataReadPollIntervalMs) { |
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VLOG(1) << __func__ << ": underflow " << len << " -> " << total_read |
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<< " read " << (kDefaultDataReadTimeoutMs - timeout_ms) << " ms"; |
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} else { |
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VLOG(2) << __func__ << ": " << len << " -> " << total_read << " read"; |
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} |
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sink_->LogBytesRead(total_read); |
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return total_read; |
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} |
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size_t BluetoothAudioClientInterface::WriteAudioData(uint8_t* p_buf, |
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uint32_t len) { |
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// Not implemented! |
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return 0; |
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} |
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void BluetoothAudioClientInterface::RenewAudioProviderAndSession() { |
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// NOTE: must be invoked on the same thread where this |
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// BluetoothAudioClientInterface is running |
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fetch_audio_provider(); |
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session_started_ = false; |
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StartSession(); |
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} |
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|
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} // namespace audio |
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} // namespace bluetooth
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