Move libbluetooth_audio_session out of v2.0 folder
libbluetooth_audio_session must be version agnostic, and support both
2.0 and 2.1 bluetooth.audio vendor libraries
Test: compilation
Bug: 150670922
Change-Id: I487022b28a471960e669b9794808dd53b1bdca17
diff --git a/bluetooth/audio/utils/Android.bp b/bluetooth/audio/utils/Android.bp
new file mode 100644
index 0000000..add822e
--- /dev/null
+++ b/bluetooth/audio/utils/Android.bp
@@ -0,0 +1,20 @@
+cc_library_shared {
+ name: "libbluetooth_audio_session",
+ defaults: ["hidl_defaults"],
+ vendor: true,
+ srcs: [
+ "session/BluetoothAudioSession.cpp",
+ "session/BluetoothAudioSupportedCodecsDB.cpp",
+ ],
+ export_include_dirs: ["session/"],
+ header_libs: ["libhardware_headers"],
+ shared_libs: [
+ "android.hardware.bluetooth.audio@2.0",
+ "libbase",
+ "libcutils",
+ "libfmq",
+ "libhidlbase",
+ "liblog",
+ "libutils",
+ ],
+}
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession.cpp b/bluetooth/audio/utils/session/BluetoothAudioSession.cpp
new file mode 100644
index 0000000..50119bf
--- /dev/null
+++ b/bluetooth/audio/utils/session/BluetoothAudioSession.cpp
@@ -0,0 +1,429 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * 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
+ *
+ * http://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.
+ */
+
+#define LOG_TAG "BTAudioProviderSession"
+
+#include "BluetoothAudioSession.h"
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+
+namespace android {
+namespace bluetooth {
+namespace audio {
+
+using ::android::hardware::audio::common::V5_0::AudioContentType;
+using ::android::hardware::audio::common::V5_0::AudioUsage;
+using ::android::hardware::audio::common::V5_0::PlaybackTrackMetadata;
+using ::android::hardware::audio::common::V5_0::SourceMetadata;
+using ::android::hardware::bluetooth::audio::V2_0::CodecType;
+using ::android::hardware::bluetooth::audio::V2_0::TimeSpec;
+
+const CodecConfiguration BluetoothAudioSession::kInvalidCodecConfiguration = {
+ .codecType = CodecType::UNKNOWN,
+ .encodedAudioBitrate = 0x00000000,
+ .peerMtu = 0xffff,
+ .isScmstEnabled = false,
+ .config = {}};
+AudioConfiguration BluetoothAudioSession::invalidSoftwareAudioConfiguration =
+ {};
+AudioConfiguration BluetoothAudioSession::invalidOffloadAudioConfiguration = {};
+
+static constexpr int kFmqSendTimeoutMs = 1000; // 1000 ms timeout for sending
+static constexpr int kWritePollMs = 1; // polled non-blocking interval
+
+static inline timespec timespec_convert_from_hal(const TimeSpec& TS) {
+ return {.tv_sec = static_cast<long>(TS.tvSec),
+ .tv_nsec = static_cast<long>(TS.tvNSec)};
+}
+
+BluetoothAudioSession::BluetoothAudioSession(const SessionType& session_type)
+ : session_type_(session_type), stack_iface_(nullptr), mDataMQ(nullptr) {
+ invalidSoftwareAudioConfiguration.pcmConfig(kInvalidPcmParameters);
+ invalidOffloadAudioConfiguration.codecConfig(kInvalidCodecConfiguration);
+}
+
+// The report function is used to report that the Bluetooth stack has started
+// this session without any failure, and will invoke session_changed_cb_ to
+// notify those registered bluetooth_audio outputs
+void BluetoothAudioSession::OnSessionStarted(
+ const sp<IBluetoothAudioPort> stack_iface, const DataMQ::Descriptor* dataMQ,
+ const AudioConfiguration& audio_config) {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (stack_iface == nullptr) {
+ LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+ << ", IBluetoothAudioPort Invalid";
+ } else if (!UpdateAudioConfig(audio_config)) {
+ LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+ << ", AudioConfiguration=" << toString(audio_config)
+ << " Invalid";
+ } else if (!UpdateDataPath(dataMQ)) {
+ LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+ << " DataMQ Invalid";
+ audio_config_ =
+ (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH
+ ? kInvalidOffloadAudioConfiguration
+ : kInvalidSoftwareAudioConfiguration);
+ } else {
+ stack_iface_ = stack_iface;
+ LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+ << ", AudioConfiguration=" << toString(audio_config);
+ ReportSessionStatus();
+ }
+}
+
+// The report function is used to report that the Bluetooth stack has ended the
+// session, and will invoke session_changed_cb_ to notify registered
+// bluetooth_audio outputs
+void BluetoothAudioSession::OnSessionEnded() {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ bool toggled = IsSessionReady();
+ LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
+ audio_config_ = (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH
+ ? kInvalidOffloadAudioConfiguration
+ : kInvalidSoftwareAudioConfiguration);
+ stack_iface_ = nullptr;
+ UpdateDataPath(nullptr);
+ if (toggled) {
+ ReportSessionStatus();
+ }
+}
+
+// invoking the registered session_changed_cb_
+void BluetoothAudioSession::ReportSessionStatus() {
+ // This is locked already by OnSessionStarted / OnSessionEnded
+ if (observers_.empty()) {
+ LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+ << " has NO port state observer";
+ return;
+ }
+ for (auto& observer : observers_) {
+ uint16_t cookie = observer.first;
+ std::shared_ptr<struct PortStatusCallbacks> cb = observer.second;
+ LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+ << " notify to bluetooth_audio=0x"
+ << android::base::StringPrintf("%04x", cookie);
+ cb->session_changed_cb_(cookie);
+ }
+}
+
+// The report function is used to report that the Bluetooth stack has notified
+// the result of startStream or suspendStream, and will invoke
+// control_result_cb_ to notify registered bluetooth_audio outputs
+void BluetoothAudioSession::ReportControlStatus(
+ bool start_resp, const BluetoothAudioStatus& status) {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (observers_.empty()) {
+ LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
+ << " has NO port state observer";
+ return;
+ }
+ for (auto& observer : observers_) {
+ uint16_t cookie = observer.first;
+ std::shared_ptr<struct PortStatusCallbacks> cb = observer.second;
+ LOG(INFO) << __func__ << " - status=" << toString(status)
+ << " for SessionType=" << toString(session_type_)
+ << ", bluetooth_audio=0x"
+ << android::base::StringPrintf("%04x", cookie)
+ << (start_resp ? " started" : " suspended");
+ cb->control_result_cb_(cookie, start_resp, status);
+ }
+}
+
+// The function helps to check if this session is ready or not
+// @return: true if the Bluetooth stack has started the specified session
+bool BluetoothAudioSession::IsSessionReady() {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ bool dataMQ_valid =
+ (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH ||
+ (mDataMQ != nullptr && mDataMQ->isValid()));
+ return stack_iface_ != nullptr && dataMQ_valid;
+}
+
+bool BluetoothAudioSession::UpdateDataPath(const DataMQ::Descriptor* dataMQ) {
+ if (dataMQ == nullptr) {
+ // usecase of reset by nullptr
+ mDataMQ = nullptr;
+ return true;
+ }
+ std::unique_ptr<DataMQ> tempDataMQ;
+ tempDataMQ.reset(new DataMQ(*dataMQ));
+ if (!tempDataMQ || !tempDataMQ->isValid()) {
+ mDataMQ = nullptr;
+ return false;
+ }
+ mDataMQ = std::move(tempDataMQ);
+ return true;
+}
+
+bool BluetoothAudioSession::UpdateAudioConfig(
+ const AudioConfiguration& audio_config) {
+ bool is_software_session =
+ (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+ session_type_ == SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH);
+ bool is_offload_session =
+ (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH);
+ auto audio_config_discriminator = audio_config.getDiscriminator();
+ bool is_software_audio_config =
+ (is_software_session &&
+ audio_config_discriminator ==
+ AudioConfiguration::hidl_discriminator::pcmConfig);
+ bool is_offload_audio_config =
+ (is_offload_session &&
+ audio_config_discriminator ==
+ AudioConfiguration::hidl_discriminator::codecConfig);
+ if (!is_software_audio_config && !is_offload_audio_config) {
+ return false;
+ }
+ audio_config_ = audio_config;
+ return true;
+}
+
+// The control function helps the bluetooth_audio module to register
+// PortStatusCallbacks
+// @return: cookie - the assigned number to this bluetooth_audio output
+uint16_t BluetoothAudioSession::RegisterStatusCback(
+ const PortStatusCallbacks& cbacks) {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ uint16_t cookie = ObserversCookieGetInitValue(session_type_);
+ uint16_t cookie_upper_bound = ObserversCookieGetUpperBound(session_type_);
+
+ while (cookie < cookie_upper_bound) {
+ if (observers_.find(cookie) == observers_.end()) {
+ break;
+ }
+ ++cookie;
+ }
+ if (cookie >= cookie_upper_bound) {
+ LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+ << " has " << observers_.size()
+ << " observers already (No Resource)";
+ return kObserversCookieUndefined;
+ }
+ std::shared_ptr<struct PortStatusCallbacks> cb =
+ std::make_shared<struct PortStatusCallbacks>();
+ *cb = cbacks;
+ observers_[cookie] = cb;
+ return cookie;
+}
+
+// The control function helps the bluetooth_audio module to unregister
+// PortStatusCallbacks
+// @param: cookie - indicates which bluetooth_audio output is
+void BluetoothAudioSession::UnregisterStatusCback(uint16_t cookie) {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (observers_.erase(cookie) != 1) {
+ LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
+ << " no such provider=0x"
+ << android::base::StringPrintf("%04x", cookie);
+ }
+}
+
+// The control function is for the bluetooth_audio module to get the current
+// AudioConfiguration
+const AudioConfiguration& BluetoothAudioSession::GetAudioConfig() {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (IsSessionReady()) {
+ return audio_config_;
+ } else if (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
+ return kInvalidOffloadAudioConfiguration;
+ } else {
+ return kInvalidSoftwareAudioConfiguration;
+ }
+}
+
+// Those control functions are for the bluetooth_audio module to start, suspend,
+// stop stream, to check position, and to update metadata.
+bool BluetoothAudioSession::StartStream() {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (!IsSessionReady()) {
+ LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+ << " has NO session";
+ return false;
+ }
+ auto hal_retval = stack_iface_->startStream();
+ if (!hal_retval.isOk()) {
+ LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+ << toString(session_type_) << " failed";
+ return false;
+ }
+ return true;
+}
+
+bool BluetoothAudioSession::SuspendStream() {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (!IsSessionReady()) {
+ LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+ << " has NO session";
+ return false;
+ }
+ auto hal_retval = stack_iface_->suspendStream();
+ if (!hal_retval.isOk()) {
+ LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+ << toString(session_type_) << " failed";
+ return false;
+ }
+ return true;
+}
+
+void BluetoothAudioSession::StopStream() {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (!IsSessionReady()) {
+ return;
+ }
+ auto hal_retval = stack_iface_->stopStream();
+ if (!hal_retval.isOk()) {
+ LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+ << toString(session_type_) << " failed";
+ }
+}
+
+bool BluetoothAudioSession::GetPresentationPosition(
+ uint64_t* remote_delay_report_ns, uint64_t* total_bytes_readed,
+ timespec* data_position) {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (!IsSessionReady()) {
+ LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+ << " has NO session";
+ return false;
+ }
+ bool retval = false;
+ auto hal_retval = stack_iface_->getPresentationPosition(
+ [&retval, &remote_delay_report_ns, &total_bytes_readed, &data_position](
+ BluetoothAudioStatus status,
+ const uint64_t& remoteDeviceAudioDelayNanos,
+ uint64_t transmittedOctets,
+ const TimeSpec& transmittedOctetsTimeStamp) {
+ if (status == BluetoothAudioStatus::SUCCESS) {
+ if (remote_delay_report_ns)
+ *remote_delay_report_ns = remoteDeviceAudioDelayNanos;
+ if (total_bytes_readed) *total_bytes_readed = transmittedOctets;
+ if (data_position)
+ *data_position =
+ timespec_convert_from_hal(transmittedOctetsTimeStamp);
+ retval = true;
+ }
+ });
+ if (!hal_retval.isOk()) {
+ LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+ << toString(session_type_) << " failed";
+ return false;
+ }
+ return retval;
+}
+
+void BluetoothAudioSession::UpdateTracksMetadata(
+ const struct source_metadata* source_metadata) {
+ std::lock_guard<std::recursive_mutex> guard(mutex_);
+ if (!IsSessionReady()) {
+ LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+ << " has NO session";
+ return;
+ }
+
+ ssize_t track_count = source_metadata->track_count;
+ LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_) << ", "
+ << track_count << " track(s)";
+ if (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+ session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
+ return;
+ }
+
+ struct playback_track_metadata* track = source_metadata->tracks;
+ SourceMetadata sourceMetadata;
+ PlaybackTrackMetadata* halMetadata;
+
+ sourceMetadata.tracks.resize(track_count);
+ halMetadata = sourceMetadata.tracks.data();
+ while (track_count && track) {
+ halMetadata->usage = static_cast<AudioUsage>(track->usage);
+ halMetadata->contentType =
+ static_cast<AudioContentType>(track->content_type);
+ halMetadata->gain = track->gain;
+ LOG(VERBOSE) << __func__ << " - SessionType=" << toString(session_type_)
+ << ", usage=" << toString(halMetadata->usage)
+ << ", content=" << toString(halMetadata->contentType)
+ << ", gain=" << halMetadata->gain;
+ --track_count;
+ ++track;
+ ++halMetadata;
+ }
+ auto hal_retval = stack_iface_->updateMetadata(sourceMetadata);
+ if (!hal_retval.isOk()) {
+ LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+ << toString(session_type_) << " failed";
+ }
+}
+
+// The control function writes stream to FMQ
+size_t BluetoothAudioSession::OutWritePcmData(const void* buffer,
+ size_t bytes) {
+ if (buffer == nullptr || !bytes) return 0;
+ size_t totalWritten = 0;
+ int ms_timeout = kFmqSendTimeoutMs;
+ do {
+ std::unique_lock<std::recursive_mutex> lock(mutex_);
+ if (!IsSessionReady()) break;
+ size_t availableToWrite = mDataMQ->availableToWrite();
+ if (availableToWrite) {
+ if (availableToWrite > (bytes - totalWritten)) {
+ availableToWrite = bytes - totalWritten;
+ }
+
+ if (!mDataMQ->write(static_cast<const uint8_t*>(buffer) + totalWritten,
+ availableToWrite)) {
+ ALOGE("FMQ datapath writting %zu/%zu failed", totalWritten, bytes);
+ return totalWritten;
+ }
+ totalWritten += availableToWrite;
+ } else if (ms_timeout >= kWritePollMs) {
+ lock.unlock();
+ usleep(kWritePollMs * 1000);
+ ms_timeout -= kWritePollMs;
+ } else {
+ ALOGD("data %zu/%zu overflow %d ms", totalWritten, bytes,
+ (kFmqSendTimeoutMs - ms_timeout));
+ return totalWritten;
+ }
+ } while (totalWritten < bytes);
+ return totalWritten;
+}
+
+std::unique_ptr<BluetoothAudioSessionInstance>
+ BluetoothAudioSessionInstance::instance_ptr =
+ std::unique_ptr<BluetoothAudioSessionInstance>(
+ new BluetoothAudioSessionInstance());
+
+// API to fetch the session of A2DP / Hearing Aid
+std::shared_ptr<BluetoothAudioSession>
+BluetoothAudioSessionInstance::GetSessionInstance(
+ const SessionType& session_type) {
+ std::lock_guard<std::mutex> guard(instance_ptr->mutex_);
+ if (!instance_ptr->sessions_map_.empty()) {
+ auto entry = instance_ptr->sessions_map_.find(session_type);
+ if (entry != instance_ptr->sessions_map_.end()) {
+ return entry->second;
+ }
+ }
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ std::make_shared<BluetoothAudioSession>(session_type);
+ instance_ptr->sessions_map_[session_type] = session_ptr;
+ return session_ptr;
+}
+
+} // namespace audio
+} // namespace bluetooth
+} // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession.h b/bluetooth/audio/utils/session/BluetoothAudioSession.h
new file mode 100644
index 0000000..838d1cc
--- /dev/null
+++ b/bluetooth/audio/utils/session/BluetoothAudioSession.h
@@ -0,0 +1,186 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * 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
+ *
+ * http://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.
+ */
+
+#pragma once
+
+#include <mutex>
+#include <unordered_map>
+
+#include <android/hardware/bluetooth/audio/2.0/IBluetoothAudioPort.h>
+#include <fmq/MessageQueue.h>
+#include <hardware/audio.h>
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace bluetooth {
+namespace audio {
+
+using ::android::sp;
+using ::android::hardware::kSynchronizedReadWrite;
+using ::android::hardware::MessageQueue;
+using ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
+using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
+using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
+using ::android::hardware::bluetooth::audio::V2_0::CodecConfiguration;
+using ::android::hardware::bluetooth::audio::V2_0::IBluetoothAudioPort;
+using ::android::hardware::bluetooth::audio::V2_0::PcmParameters;
+using ::android::hardware::bluetooth::audio::V2_0::SampleRate;
+using ::android::hardware::bluetooth::audio::V2_0::SessionType;
+
+using BluetoothAudioStatus =
+ ::android::hardware::bluetooth::audio::V2_0::Status;
+
+using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
+
+static constexpr uint16_t kObserversCookieSize = 0x0010; // 0x0000 ~ 0x000f
+constexpr uint16_t kObserversCookieUndefined =
+ (static_cast<uint16_t>(SessionType::UNKNOWN) << 8 & 0xff00);
+inline SessionType ObserversCookieGetSessionType(uint16_t cookie) {
+ return static_cast<SessionType>(cookie >> 8 & 0x00ff);
+}
+inline uint16_t ObserversCookieGetInitValue(SessionType session_type) {
+ return (static_cast<uint16_t>(session_type) << 8 & 0xff00);
+}
+inline uint16_t ObserversCookieGetUpperBound(SessionType session_type) {
+ return (static_cast<uint16_t>(session_type) << 8 & 0xff00) +
+ kObserversCookieSize;
+}
+
+// This presents the callbacks of started / suspended and session changed,
+// and the bluetooth_audio module uses to receive the status notification
+struct PortStatusCallbacks {
+ // control_result_cb_ - when the Bluetooth stack reports results of
+ // streamStarted or streamSuspended, the BluetoothAudioProvider will invoke
+ // this callback to report to the bluetooth_audio module.
+ // @param: cookie - indicates which bluetooth_audio output should handle
+ // @param: start_resp - this report is for startStream or not
+ // @param: status - the result of startStream
+ std::function<void(uint16_t cookie, bool start_resp,
+ const BluetoothAudioStatus& status)>
+ control_result_cb_;
+ // session_changed_cb_ - when the Bluetooth stack start / end session, the
+ // BluetoothAudioProvider will invoke this callback to notify to the
+ // bluetooth_audio module.
+ // @param: cookie - indicates which bluetooth_audio output should handle
+ std::function<void(uint16_t cookie)> session_changed_cb_;
+};
+
+class BluetoothAudioSession {
+ private:
+ // using recursive_mutex to allow hwbinder to re-enter agian.
+ std::recursive_mutex mutex_;
+ SessionType session_type_;
+
+ // audio control path to use for both software and offloading
+ sp<IBluetoothAudioPort> stack_iface_;
+ // audio data path (FMQ) for software encoding
+ std::unique_ptr<DataMQ> mDataMQ;
+ // audio data configuration for both software and offloading
+ AudioConfiguration audio_config_;
+
+ static AudioConfiguration invalidSoftwareAudioConfiguration;
+ static AudioConfiguration invalidOffloadAudioConfiguration;
+
+ // saving those registered bluetooth_audio's callbacks
+ std::unordered_map<uint16_t, std::shared_ptr<struct PortStatusCallbacks>>
+ observers_;
+
+ bool UpdateDataPath(const DataMQ::Descriptor* dataMQ);
+ bool UpdateAudioConfig(const AudioConfiguration& audio_config);
+ // invoking the registered session_changed_cb_
+ void ReportSessionStatus();
+
+ public:
+ BluetoothAudioSession(const SessionType& session_type);
+
+ // The function helps to check if this session is ready or not
+ // @return: true if the Bluetooth stack has started the specified session
+ bool IsSessionReady();
+
+ // The report function is used to report that the Bluetooth stack has started
+ // this session without any failure, and will invoke session_changed_cb_ to
+ // notify those registered bluetooth_audio outputs
+ void OnSessionStarted(const sp<IBluetoothAudioPort> stack_iface,
+ const DataMQ::Descriptor* dataMQ,
+ const AudioConfiguration& audio_config);
+
+ // The report function is used to report that the Bluetooth stack has ended
+ // the session, and will invoke session_changed_cb_ to notify registered
+ // bluetooth_audio outputs
+ void OnSessionEnded();
+
+ // The report function is used to report that the Bluetooth stack has notified
+ // the result of startStream or suspendStream, and will invoke
+ // control_result_cb_ to notify registered bluetooth_audio outputs
+ void ReportControlStatus(bool start_resp, const BluetoothAudioStatus& status);
+
+ // The control function helps the bluetooth_audio module to register
+ // PortStatusCallbacks
+ // @return: cookie - the assigned number to this bluetooth_audio output
+ uint16_t RegisterStatusCback(const PortStatusCallbacks& cbacks);
+
+ // The control function helps the bluetooth_audio module to unregister
+ // PortStatusCallbacks
+ // @param: cookie - indicates which bluetooth_audio output is
+ void UnregisterStatusCback(uint16_t cookie);
+
+ // The control function is for the bluetooth_audio module to get the current
+ // AudioConfiguration
+ const AudioConfiguration& GetAudioConfig();
+
+ // Those control functions are for the bluetooth_audio module to start,
+ // suspend, stop stream, to check position, and to update metadata.
+ bool StartStream();
+ bool SuspendStream();
+ void StopStream();
+ bool GetPresentationPosition(uint64_t* remote_delay_report_ns,
+ uint64_t* total_bytes_readed,
+ timespec* data_position);
+ void UpdateTracksMetadata(const struct source_metadata* source_metadata);
+
+ // The control function writes stream to FMQ
+ size_t OutWritePcmData(const void* buffer, size_t bytes);
+
+ static constexpr PcmParameters kInvalidPcmParameters = {
+ .sampleRate = SampleRate::RATE_UNKNOWN,
+ .channelMode = ChannelMode::UNKNOWN,
+ .bitsPerSample = BitsPerSample::BITS_UNKNOWN,
+ };
+ // can't be constexpr because of non-literal type
+ static const CodecConfiguration kInvalidCodecConfiguration;
+
+ static constexpr AudioConfiguration& kInvalidSoftwareAudioConfiguration =
+ invalidSoftwareAudioConfiguration;
+ static constexpr AudioConfiguration& kInvalidOffloadAudioConfiguration =
+ invalidOffloadAudioConfiguration;
+};
+
+class BluetoothAudioSessionInstance {
+ public:
+ // The API is to fetch the specified session of A2DP / Hearing Aid
+ static std::shared_ptr<BluetoothAudioSession> GetSessionInstance(
+ const SessionType& session_type);
+
+ private:
+ static std::unique_ptr<BluetoothAudioSessionInstance> instance_ptr;
+ std::mutex mutex_;
+ std::unordered_map<SessionType, std::shared_ptr<BluetoothAudioSession>>
+ sessions_map_;
+};
+
+} // namespace audio
+} // namespace bluetooth
+} // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSessionControl.h b/bluetooth/audio/utils/session/BluetoothAudioSessionControl.h
new file mode 100644
index 0000000..6707765
--- /dev/null
+++ b/bluetooth/audio/utils/session/BluetoothAudioSessionControl.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * 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
+ *
+ * http://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.
+ */
+
+#pragma once
+
+#include "BluetoothAudioSession.h"
+
+namespace android {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioSessionControl {
+ public:
+ // The control API helps to check if session is ready or not
+ // @return: true if the Bluetooth stack has started th specified session
+ static bool IsSessionReady(const SessionType& session_type) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ return session_ptr->IsSessionReady();
+ }
+ return false;
+ }
+
+ // The control API helps the bluetooth_audio module to register
+ // PortStatusCallbacks
+ // @return: cookie - the assigned number to this bluetooth_audio output
+ static uint16_t RegisterControlResultCback(
+ const SessionType& session_type, const PortStatusCallbacks& cbacks) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ return session_ptr->RegisterStatusCback(cbacks);
+ }
+ return kObserversCookieUndefined;
+ }
+
+ // The control API helps the bluetooth_audio module to unregister
+ // PortStatusCallbacks
+ // @param: cookie - indicates which bluetooth_audio output is
+ static void UnregisterControlResultCback(const SessionType& session_type,
+ uint16_t cookie) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ session_ptr->UnregisterStatusCback(cookie);
+ }
+ }
+
+ // The control API for the bluetooth_audio module to get current
+ // AudioConfiguration
+ static const AudioConfiguration& GetAudioConfig(
+ const SessionType& session_type) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ return session_ptr->GetAudioConfig();
+ } else if (session_type == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
+ return BluetoothAudioSession::kInvalidOffloadAudioConfiguration;
+ } else {
+ return BluetoothAudioSession::kInvalidSoftwareAudioConfiguration;
+ }
+ }
+
+ // Those control APIs for the bluetooth_audio module to start / suspend / stop
+ // stream, to check position, and to update metadata.
+ static bool StartStream(const SessionType& session_type) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ return session_ptr->StartStream();
+ }
+ return false;
+ }
+
+ static bool SuspendStream(const SessionType& session_type) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ return session_ptr->SuspendStream();
+ }
+ return false;
+ }
+
+ static void StopStream(const SessionType& session_type) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ session_ptr->StopStream();
+ }
+ }
+
+ static bool GetPresentationPosition(const SessionType& session_type,
+ uint64_t* remote_delay_report_ns,
+ uint64_t* total_bytes_readed,
+ timespec* data_position) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ return session_ptr->GetPresentationPosition(
+ remote_delay_report_ns, total_bytes_readed, data_position);
+ }
+ return false;
+ }
+
+ static void UpdateTracksMetadata(
+ const SessionType& session_type,
+ const struct source_metadata* source_metadata) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ session_ptr->UpdateTracksMetadata(source_metadata);
+ }
+ }
+
+ // The control API writes stream to FMQ
+ static size_t OutWritePcmData(const SessionType& session_type,
+ const void* buffer, size_t bytes) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ return session_ptr->OutWritePcmData(buffer, bytes);
+ }
+ return 0;
+ }
+};
+
+} // namespace audio
+} // namespace bluetooth
+} // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSessionReport.h b/bluetooth/audio/utils/session/BluetoothAudioSessionReport.h
new file mode 100644
index 0000000..5a83ae2
--- /dev/null
+++ b/bluetooth/audio/utils/session/BluetoothAudioSessionReport.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * 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
+ *
+ * http://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.
+ */
+
+#pragma once
+
+#include "BluetoothAudioSession.h"
+
+namespace android {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioSessionReport {
+ public:
+ // The API reports the Bluetooth stack has started the session, and will
+ // inform registered bluetooth_audio outputs
+ static void OnSessionStarted(const SessionType& session_type,
+ const sp<IBluetoothAudioPort> host_iface,
+ const DataMQ::Descriptor* dataMQ,
+ const AudioConfiguration& audio_config) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ session_ptr->OnSessionStarted(host_iface, dataMQ, audio_config);
+ }
+ }
+ // The API reports the Bluetooth stack has ended the session, and will
+ // inform registered bluetooth_audio outputs
+ static void OnSessionEnded(const SessionType& session_type) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ session_ptr->OnSessionEnded();
+ }
+ }
+ // The API reports the Bluetooth stack has replied the result of startStream
+ // or suspendStream, and will inform registered bluetooth_audio outputs
+ static void ReportControlStatus(const SessionType& session_type,
+ const bool& start_resp,
+ const BluetoothAudioStatus& status) {
+ std::shared_ptr<BluetoothAudioSession> session_ptr =
+ BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+ if (session_ptr != nullptr) {
+ session_ptr->ReportControlStatus(start_resp, status);
+ }
+ }
+};
+
+} // namespace audio
+} // namespace bluetooth
+} // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB.cpp b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB.cpp
new file mode 100644
index 0000000..c368197
--- /dev/null
+++ b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB.cpp
@@ -0,0 +1,415 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * 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
+ *
+ * http://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.
+ */
+
+#define LOG_TAG "BTAudioProviderSessionCodecsDB"
+
+#include "BluetoothAudioSupportedCodecsDB.h"
+
+#include <android-base/logging.h>
+
+namespace android {
+namespace bluetooth {
+namespace audio {
+
+using ::android::hardware::bluetooth::audio::V2_0::AacObjectType;
+using ::android::hardware::bluetooth::audio::V2_0::AacParameters;
+using ::android::hardware::bluetooth::audio::V2_0::AacVariableBitRate;
+using ::android::hardware::bluetooth::audio::V2_0::AptxParameters;
+using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
+using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
+using ::android::hardware::bluetooth::audio::V2_0::CodecType;
+using ::android::hardware::bluetooth::audio::V2_0::LdacChannelMode;
+using ::android::hardware::bluetooth::audio::V2_0::LdacParameters;
+using ::android::hardware::bluetooth::audio::V2_0::LdacQualityIndex;
+using ::android::hardware::bluetooth::audio::V2_0::SampleRate;
+using ::android::hardware::bluetooth::audio::V2_0::SbcAllocMethod;
+using ::android::hardware::bluetooth::audio::V2_0::SbcBlockLength;
+using ::android::hardware::bluetooth::audio::V2_0::SbcChannelMode;
+using ::android::hardware::bluetooth::audio::V2_0::SbcNumSubbands;
+using ::android::hardware::bluetooth::audio::V2_0::SbcParameters;
+
+// Default Supported PCM Parameters
+static const PcmParameters kDefaultSoftwarePcmCapabilities = {
+ .sampleRate = static_cast<SampleRate>(
+ SampleRate::RATE_44100 | SampleRate::RATE_48000 |
+ SampleRate::RATE_88200 | SampleRate::RATE_96000 |
+ SampleRate::RATE_16000 | SampleRate::RATE_24000),
+ .channelMode =
+ static_cast<ChannelMode>(ChannelMode::MONO | ChannelMode::STEREO),
+ .bitsPerSample = static_cast<BitsPerSample>(BitsPerSample::BITS_16 |
+ BitsPerSample::BITS_24 |
+ BitsPerSample::BITS_32)};
+
+// Default Supported Codecs
+// SBC: mSampleRate:(44100), mBitsPerSample:(16), mChannelMode:(MONO|STEREO)
+// all blocks | subbands 8 | Loudness
+static const SbcParameters kDefaultOffloadSbcCapability = {
+ .sampleRate = SampleRate::RATE_44100,
+ .channelMode = static_cast<SbcChannelMode>(SbcChannelMode::MONO |
+ SbcChannelMode::JOINT_STEREO),
+ .blockLength = static_cast<SbcBlockLength>(
+ SbcBlockLength::BLOCKS_4 | SbcBlockLength::BLOCKS_8 |
+ SbcBlockLength::BLOCKS_12 | SbcBlockLength::BLOCKS_16),
+ .numSubbands = SbcNumSubbands::SUBBAND_8,
+ .allocMethod = SbcAllocMethod::ALLOC_MD_L,
+ .bitsPerSample = BitsPerSample::BITS_16,
+ .minBitpool = 2,
+ .maxBitpool = 53};
+
+// AAC: mSampleRate:(44100), mBitsPerSample:(16), mChannelMode:(STEREO)
+static const AacParameters kDefaultOffloadAacCapability = {
+ .objectType = AacObjectType::MPEG2_LC,
+ .sampleRate = SampleRate::RATE_44100,
+ .channelMode = ChannelMode::STEREO,
+ .variableBitRateEnabled = AacVariableBitRate::ENABLED,
+ .bitsPerSample = BitsPerSample::BITS_16};
+
+// LDAC: mSampleRate:(44100|48000|88200|96000), mBitsPerSample:(16|24|32),
+// mChannelMode:(DUAL|STEREO)
+static const LdacParameters kDefaultOffloadLdacCapability = {
+ .sampleRate = static_cast<SampleRate>(
+ SampleRate::RATE_44100 | SampleRate::RATE_48000 |
+ SampleRate::RATE_88200 | SampleRate::RATE_96000),
+ .channelMode = static_cast<LdacChannelMode>(LdacChannelMode::DUAL |
+ LdacChannelMode::STEREO),
+ .qualityIndex = LdacQualityIndex::QUALITY_HIGH,
+ .bitsPerSample = static_cast<BitsPerSample>(BitsPerSample::BITS_16 |
+ BitsPerSample::BITS_24 |
+ BitsPerSample::BITS_32)};
+
+// aptX: mSampleRate:(44100|48000), mBitsPerSample:(16), mChannelMode:(STEREO)
+static const AptxParameters kDefaultOffloadAptxCapability = {
+ .sampleRate = static_cast<SampleRate>(SampleRate::RATE_44100 |
+ SampleRate::RATE_48000),
+ .channelMode = ChannelMode::STEREO,
+ .bitsPerSample = BitsPerSample::BITS_16,
+};
+
+// aptX HD: mSampleRate:(44100|48000), mBitsPerSample:(24),
+// mChannelMode:(STEREO)
+static const AptxParameters kDefaultOffloadAptxHdCapability = {
+ .sampleRate = static_cast<SampleRate>(SampleRate::RATE_44100 |
+ SampleRate::RATE_48000),
+ .channelMode = ChannelMode::STEREO,
+ .bitsPerSample = BitsPerSample::BITS_24,
+};
+
+const std::vector<CodecCapabilities> kDefaultOffloadA2dpCodecCapabilities = {
+ {.codecType = CodecType::SBC, .capabilities = {}},
+ {.codecType = CodecType::AAC, .capabilities = {}},
+ {.codecType = CodecType::LDAC, .capabilities = {}},
+ {.codecType = CodecType::APTX, .capabilities = {}},
+ {.codecType = CodecType::APTX_HD, .capabilities = {}}};
+
+static bool IsSingleBit(uint32_t bitmasks, uint32_t bitfield) {
+ bool single = false;
+ uint32_t test_bit = 0x00000001;
+ while (test_bit <= bitmasks && test_bit <= bitfield) {
+ if (bitfield & test_bit && bitmasks & test_bit) {
+ if (single) return false;
+ single = true;
+ }
+ if (test_bit == 0x80000000) break;
+ test_bit <<= 1;
+ }
+ return single;
+}
+
+static bool IsOffloadSbcConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific);
+static bool IsOffloadAacConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific);
+static bool IsOffloadLdacConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific);
+static bool IsOffloadAptxConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific);
+static bool IsOffloadAptxHdConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific);
+
+static bool IsOffloadSbcConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific) {
+ if (codec_specific.getDiscriminator() !=
+ CodecConfiguration::CodecSpecific::hidl_discriminator::sbcConfig) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ }
+ const SbcParameters sbc_data = codec_specific.sbcConfig();
+ if (!IsSingleBit(static_cast<uint32_t>(sbc_data.sampleRate), 0xff) ||
+ !IsSingleBit(static_cast<uint32_t>(sbc_data.channelMode), 0x0f) ||
+ !IsSingleBit(static_cast<uint32_t>(sbc_data.blockLength), 0xf0) ||
+ !IsSingleBit(static_cast<uint32_t>(sbc_data.numSubbands), 0x0c) ||
+ !IsSingleBit(static_cast<uint32_t>(sbc_data.allocMethod), 0x03) ||
+ !IsSingleBit(static_cast<uint32_t>(sbc_data.bitsPerSample), 0x07) ||
+ sbc_data.minBitpool > sbc_data.maxBitpool) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ } else if ((sbc_data.sampleRate & kDefaultOffloadSbcCapability.sampleRate) &&
+ (sbc_data.channelMode &
+ kDefaultOffloadSbcCapability.channelMode) &&
+ (sbc_data.blockLength &
+ kDefaultOffloadSbcCapability.blockLength) &&
+ (sbc_data.numSubbands &
+ kDefaultOffloadSbcCapability.numSubbands) &&
+ (sbc_data.allocMethod &
+ kDefaultOffloadSbcCapability.allocMethod) &&
+ (sbc_data.bitsPerSample &
+ kDefaultOffloadSbcCapability.bitsPerSample) &&
+ (kDefaultOffloadSbcCapability.minBitpool <= sbc_data.minBitpool &&
+ sbc_data.maxBitpool <= kDefaultOffloadSbcCapability.maxBitpool)) {
+ return true;
+ }
+ LOG(WARNING) << __func__
+ << ": Unsupported CodecSpecific=" << toString(codec_specific);
+ return false;
+}
+
+static bool IsOffloadAacConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific) {
+ if (codec_specific.getDiscriminator() !=
+ CodecConfiguration::CodecSpecific::hidl_discriminator::aacConfig) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ }
+ const AacParameters aac_data = codec_specific.aacConfig();
+ if (!IsSingleBit(static_cast<uint32_t>(aac_data.objectType), 0xf0) ||
+ !IsSingleBit(static_cast<uint32_t>(aac_data.sampleRate), 0xff) ||
+ !IsSingleBit(static_cast<uint32_t>(aac_data.channelMode), 0x03) ||
+ !IsSingleBit(static_cast<uint32_t>(aac_data.bitsPerSample), 0x07)) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ } else if ((aac_data.objectType & kDefaultOffloadAacCapability.objectType) &&
+ (aac_data.sampleRate & kDefaultOffloadAacCapability.sampleRate) &&
+ (aac_data.channelMode &
+ kDefaultOffloadAacCapability.channelMode) &&
+ (aac_data.variableBitRateEnabled == AacVariableBitRate::DISABLED ||
+ kDefaultOffloadAacCapability.variableBitRateEnabled ==
+ AacVariableBitRate::ENABLED) &&
+ (aac_data.bitsPerSample &
+ kDefaultOffloadAacCapability.bitsPerSample)) {
+ return true;
+ }
+ LOG(WARNING) << __func__
+ << ": Unsupported CodecSpecific=" << toString(codec_specific);
+ return false;
+}
+
+static bool IsOffloadLdacConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific) {
+ if (codec_specific.getDiscriminator() !=
+ CodecConfiguration::CodecSpecific::hidl_discriminator::ldacConfig) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ }
+ const LdacParameters ldac_data = codec_specific.ldacConfig();
+ if (!IsSingleBit(static_cast<uint32_t>(ldac_data.sampleRate), 0xff) ||
+ !IsSingleBit(static_cast<uint32_t>(ldac_data.channelMode), 0x07) ||
+ (ldac_data.qualityIndex > LdacQualityIndex::QUALITY_LOW &&
+ ldac_data.qualityIndex != LdacQualityIndex::QUALITY_ABR) ||
+ !IsSingleBit(static_cast<uint32_t>(ldac_data.bitsPerSample), 0x07)) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ } else if ((ldac_data.sampleRate &
+ kDefaultOffloadLdacCapability.sampleRate) &&
+ (ldac_data.channelMode &
+ kDefaultOffloadLdacCapability.channelMode) &&
+ (ldac_data.bitsPerSample &
+ kDefaultOffloadLdacCapability.bitsPerSample)) {
+ return true;
+ }
+ LOG(WARNING) << __func__
+ << ": Unsupported CodecSpecific=" << toString(codec_specific);
+ return false;
+}
+
+static bool IsOffloadAptxConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific) {
+ if (codec_specific.getDiscriminator() !=
+ CodecConfiguration::CodecSpecific::hidl_discriminator::aptxConfig) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ }
+ const AptxParameters aptx_data = codec_specific.aptxConfig();
+ if (!IsSingleBit(static_cast<uint32_t>(aptx_data.sampleRate), 0xff) ||
+ !IsSingleBit(static_cast<uint32_t>(aptx_data.channelMode), 0x03) ||
+ !IsSingleBit(static_cast<uint32_t>(aptx_data.bitsPerSample), 0x07)) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ } else if ((aptx_data.sampleRate &
+ kDefaultOffloadAptxCapability.sampleRate) &&
+ (aptx_data.channelMode &
+ kDefaultOffloadAptxCapability.channelMode) &&
+ (aptx_data.bitsPerSample &
+ kDefaultOffloadAptxCapability.bitsPerSample)) {
+ return true;
+ }
+ LOG(WARNING) << __func__
+ << ": Unsupported CodecSpecific=" << toString(codec_specific);
+ return false;
+}
+
+static bool IsOffloadAptxHdConfigurationValid(
+ const CodecConfiguration::CodecSpecific& codec_specific) {
+ if (codec_specific.getDiscriminator() !=
+ CodecConfiguration::CodecSpecific::hidl_discriminator::aptxConfig) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ }
+ const AptxParameters aptx_data = codec_specific.aptxConfig();
+ if (!IsSingleBit(static_cast<uint32_t>(aptx_data.sampleRate), 0xff) ||
+ !IsSingleBit(static_cast<uint32_t>(aptx_data.channelMode), 0x03) ||
+ !IsSingleBit(static_cast<uint32_t>(aptx_data.bitsPerSample), 0x07)) {
+ LOG(WARNING) << __func__
+ << ": Invalid CodecSpecific=" << toString(codec_specific);
+ return false;
+ } else if ((aptx_data.sampleRate &
+ kDefaultOffloadAptxHdCapability.sampleRate) &&
+ (aptx_data.channelMode &
+ kDefaultOffloadAptxHdCapability.channelMode) &&
+ (aptx_data.bitsPerSample &
+ kDefaultOffloadAptxHdCapability.bitsPerSample)) {
+ return true;
+ }
+ LOG(WARNING) << __func__
+ << ": Unsupported CodecSpecific=" << toString(codec_specific);
+ return false;
+}
+
+std::vector<PcmParameters> GetSoftwarePcmCapabilities() {
+ return std::vector<PcmParameters>(1, kDefaultSoftwarePcmCapabilities);
+}
+
+std::vector<CodecCapabilities> GetOffloadCodecCapabilities(
+ const SessionType& session_type) {
+ if (session_type != SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
+ return std::vector<CodecCapabilities>(0);
+ }
+ 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.sbcCapabilities(
+ kDefaultOffloadSbcCapability);
+ break;
+ case CodecType::AAC:
+ codec_capability.capabilities.aacCapabilities(
+ kDefaultOffloadAacCapability);
+ break;
+ case CodecType::LDAC:
+ codec_capability.capabilities.ldacCapabilities(
+ kDefaultOffloadLdacCapability);
+ break;
+ case CodecType::APTX:
+ codec_capability.capabilities.aptxCapabilities(
+ kDefaultOffloadAptxCapability);
+ break;
+ case CodecType::APTX_HD:
+ codec_capability.capabilities.aptxCapabilities(
+ kDefaultOffloadAptxHdCapability);
+ break;
+ case CodecType::UNKNOWN:
+ codec_capability = {};
+ break;
+ }
+ }
+ return offload_a2dp_codec_capabilities;
+}
+
+bool IsSoftwarePcmConfigurationValid(const PcmParameters& pcm_config) {
+ if ((pcm_config.sampleRate != SampleRate::RATE_44100 &&
+ pcm_config.sampleRate != SampleRate::RATE_48000 &&
+ pcm_config.sampleRate != SampleRate::RATE_88200 &&
+ pcm_config.sampleRate != SampleRate::RATE_96000 &&
+ pcm_config.sampleRate != SampleRate::RATE_16000 &&
+ pcm_config.sampleRate != SampleRate::RATE_24000) ||
+ (pcm_config.bitsPerSample != BitsPerSample::BITS_16 &&
+ pcm_config.bitsPerSample != BitsPerSample::BITS_24 &&
+ pcm_config.bitsPerSample != BitsPerSample::BITS_32) ||
+ (pcm_config.channelMode != ChannelMode::MONO &&
+ pcm_config.channelMode != ChannelMode::STEREO)) {
+ LOG(WARNING) << __func__
+ << ": Invalid PCM Configuration=" << toString(pcm_config);
+ return false;
+ } else if (pcm_config.sampleRate &
+ kDefaultSoftwarePcmCapabilities.sampleRate &&
+ pcm_config.bitsPerSample &
+ kDefaultSoftwarePcmCapabilities.bitsPerSample &&
+ pcm_config.channelMode &
+ kDefaultSoftwarePcmCapabilities.channelMode) {
+ return true;
+ }
+ LOG(WARNING) << __func__
+ << ": Unsupported PCM Configuration=" << toString(pcm_config);
+ return false;
+}
+
+bool IsOffloadCodecConfigurationValid(const SessionType& session_type,
+ const CodecConfiguration& codec_config) {
+ if (session_type != SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
+ LOG(ERROR) << __func__
+ << ": Invalid SessionType=" << toString(session_type);
+ return false;
+ } else if (codec_config.encodedAudioBitrate < 0x00000001 ||
+ 0x00ffffff < codec_config.encodedAudioBitrate) {
+ LOG(ERROR) << __func__ << ": Unsupported Codec Configuration="
+ << toString(codec_config);
+ return false;
+ }
+ const CodecConfiguration::CodecSpecific& codec_specific = codec_config.config;
+ switch (codec_config.codecType) {
+ case CodecType::SBC:
+ if (IsOffloadSbcConfigurationValid(codec_specific)) {
+ return true;
+ }
+ return false;
+ case CodecType::AAC:
+ if (IsOffloadAacConfigurationValid(codec_specific)) {
+ return true;
+ }
+ return false;
+ case CodecType::LDAC:
+ if (IsOffloadLdacConfigurationValid(codec_specific)) {
+ return true;
+ }
+ return false;
+ case CodecType::APTX:
+ if (IsOffloadAptxConfigurationValid(codec_specific)) {
+ return true;
+ }
+ return false;
+ case CodecType::APTX_HD:
+ if (IsOffloadAptxHdConfigurationValid(codec_specific)) {
+ return true;
+ }
+ return false;
+ case CodecType::UNKNOWN:
+ return false;
+ }
+ return false;
+}
+
+} // namespace audio
+} // namespace bluetooth
+} // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB.h b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB.h
new file mode 100644
index 0000000..e71dc8a
--- /dev/null
+++ b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * 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
+ *
+ * http://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.
+ */
+
+#pragma once
+
+#include <android/hardware/bluetooth/audio/2.0/types.h>
+
+namespace android {
+namespace bluetooth {
+namespace audio {
+
+using ::android::hardware::bluetooth::audio::V2_0::CodecCapabilities;
+using ::android::hardware::bluetooth::audio::V2_0::CodecConfiguration;
+using ::android::hardware::bluetooth::audio::V2_0::PcmParameters;
+using ::android::hardware::bluetooth::audio::V2_0::SessionType;
+
+std::vector<PcmParameters> GetSoftwarePcmCapabilities();
+std::vector<CodecCapabilities> GetOffloadCodecCapabilities(
+ const SessionType& session_type);
+
+bool IsSoftwarePcmConfigurationValid(const PcmParameters& pcm_config);
+bool IsOffloadCodecConfigurationValid(const SessionType& session_type,
+ const CodecConfiguration& codec_config);
+
+} // namespace audio
+} // namespace bluetooth
+} // namespace android