Remove bluetooth.audio@2.2 default implementation and utils handles am: 921760d9a7 am: d3f8b39e76

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1959014

Change-Id: I8a61f053b89b3f8e6d8b3ecad1e7ee4f55981030

27 files changed, 48 insertions, 3340 deletions

diff --git a/bluetooth/audio/2.2/OWNERS b/bluetooth/audio/2.2/OWNERS
deleted file mode 100644
index 84f5b1e8c0..0000000000
--- a/bluetooth/audio/2.2/OWNERS
+++ /dev/null
@@ -1,3 +0,0 @@
-aliceypkuo@google.com
-ugoyu@google.com
-sattiraju@google.com
diff --git a/bluetooth/audio/2.2/default/A2dpOffloadAudioProvider.cpp b/bluetooth/audio/2.2/default/A2dpOffloadAudioProvider.cpp
deleted file mode 100644
index 2a6d93aab4..0000000000
--- a/bluetooth/audio/2.2/default/A2dpOffloadAudioProvider.cpp
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Copyright 2021 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 "BTAudioProviderA2dpOffload"
-
-#include "A2dpOffloadAudioProvider.h"
-
-#include <android-base/logging.h>
-#include <fmq/MessageQueue.h>
-#include <hidl/MQDescriptor.h>
-
-#include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_2;
-using ::android::hardware::kSynchronizedReadWrite;
-using ::android::hardware::MessageQueue;
-using ::android::hardware::Void;
-using ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
-
-using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
-
-A2dpOffloadAudioProvider::A2dpOffloadAudioProvider()
-    : BluetoothAudioProvider() {
-  session_type_ = V2_1::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH;
-}
-
-bool A2dpOffloadAudioProvider::isValid(const V2_0::SessionType& sessionType) {
-  return isValid(static_cast<V2_1::SessionType>(sessionType));
-}
-
-bool A2dpOffloadAudioProvider::isValid(const V2_1::SessionType& sessionType) {
-  return (sessionType == session_type_);
-}
-
-Return<void> A2dpOffloadAudioProvider::startSession(
-    const sp<V2_0::IBluetoothAudioPort>& hostIf,
-    const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  /**
-   * Initialize the audio platform if audioConfiguration is supported.
-   * Save the IBluetoothAudioPort interface, so that it can be used
-   * later to send stream control commands to the HAL client, based on
-   * interaction with Audio framework.
-   */
-  if (audioConfig.getDiscriminator() !=
-      AudioConfiguration::hidl_discriminator::codecConfig) {
-    LOG(WARNING) << __func__
-                 << " - Invalid Audio Configuration=" << toString(audioConfig);
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  } else if (!android::bluetooth::audio::IsOffloadCodecConfigurationValid(
-                 session_type_, audioConfig.codecConfig())) {
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  return BluetoothAudioProvider::startSession(hostIf, audioConfig, _hidl_cb);
-}
-
-Return<void> A2dpOffloadAudioProvider::onSessionReady(
-    startSession_cb _hidl_cb) {
-  BluetoothAudioSessionReport_2_2::OnSessionStarted(session_type_, stack_iface_,
-                                                    nullptr, audio_config_);
-  _hidl_cb(BluetoothAudioStatus::SUCCESS, DataMQ::Descriptor());
-  return Void();
-}
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/A2dpOffloadAudioProvider.h b/bluetooth/audio/2.2/default/A2dpOffloadAudioProvider.h
deleted file mode 100644
index 7ccdedcbe5..0000000000
--- a/bluetooth/audio/2.2/default/A2dpOffloadAudioProvider.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright 2021 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 "BluetoothAudioProvider.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-class A2dpOffloadAudioProvider : public BluetoothAudioProvider {
- public:
-  A2dpOffloadAudioProvider();
-
-  bool isValid(const V2_1::SessionType& sessionType) override;
-  bool isValid(const V2_0::SessionType& sessionType) override;
-
-  Return<void> startSession(const sp<V2_0::IBluetoothAudioPort>& hostIf,
-                            const V2_0::AudioConfiguration& audioConfig,
-                            startSession_cb _hidl_cb) override;
-
- private:
-  Return<void> onSessionReady(startSession_cb _hidl_cb) override;
-};
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.cpp b/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.cpp
deleted file mode 100644
index eb87178c38..0000000000
--- a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.cpp
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * Copyright 2021 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 "BTAudioProviderA2dpSoftware"
-
-#include "A2dpSoftwareAudioProvider.h"
-
-#include <android-base/logging.h>
-
-#include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_2.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_2;
-using ::android::hardware::Void;
-using ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
-
-// Here the buffer size is based on SBC
-static constexpr uint32_t kPcmFrameSize = 4;  // 16 bits per sample / stereo
-// SBC is 128, and here we choose the LCM of 16, 24, and 32
-static constexpr uint32_t kPcmFrameCount = 96;
-static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
-// The max counts by 1 tick (20ms) for SBC is about 7. Since using 96 for the
-// PCM counts, here we just choose a greater number
-static constexpr uint32_t kRtpFrameCount = 10;
-static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
-static constexpr uint32_t kBufferCount = 2;  // double buffer
-static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;
-
-A2dpSoftwareAudioProvider::A2dpSoftwareAudioProvider()
-    : BluetoothAudioProvider(), mDataMQ(nullptr) {
-  LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
-            << " byte(s)";
-  std::unique_ptr<DataMQ> tempDataMQ(
-      new DataMQ(kDataMqSize, /* EventFlag */ true));
-  if (tempDataMQ && tempDataMQ->isValid()) {
-    mDataMQ = std::move(tempDataMQ);
-    session_type_ = V2_1::SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH;
-  } else {
-    ALOGE_IF(!tempDataMQ, "failed to allocate data MQ");
-    ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "data MQ is invalid");
-  }
-}
-
-bool A2dpSoftwareAudioProvider::isValid(const V2_0::SessionType& sessionType) {
-  return isValid(static_cast<V2_1::SessionType>(sessionType));
-}
-
-bool A2dpSoftwareAudioProvider::isValid(const V2_1::SessionType& sessionType) {
-  return (sessionType == session_type_ && mDataMQ && mDataMQ->isValid());
-}
-
-Return<void> A2dpSoftwareAudioProvider::startSession(
-    const sp<V2_0::IBluetoothAudioPort>& hostIf,
-    const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  /**
-   * Initialize the audio platform if audioConfiguration is supported.
-   * Save the IBluetoothAudioPort interface, so that it can be used
-   * later to send stream control commands to the HAL client, based on
-   * interaction with Audio framework.
-   */
-  if (audioConfig.getDiscriminator() !=
-      AudioConfiguration::hidl_discriminator::pcmConfig) {
-    LOG(WARNING) << __func__
-                 << " - Invalid Audio Configuration=" << toString(audioConfig);
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  } else if (!android::bluetooth::audio::IsSoftwarePcmConfigurationValid(
-                 audioConfig.pcmConfig())) {
-    LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
-                 << toString(audioConfig.pcmConfig());
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  return BluetoothAudioProvider::startSession(hostIf, audioConfig, _hidl_cb);
-}
-
-Return<void> A2dpSoftwareAudioProvider::onSessionReady(
-    startSession_cb _hidl_cb) {
-  if (mDataMQ && mDataMQ->isValid()) {
-    BluetoothAudioSessionReport_2_2::OnSessionStarted(
-        session_type_, stack_iface_, mDataMQ->getDesc(), audio_config_);
-    _hidl_cb(BluetoothAudioStatus::SUCCESS, *mDataMQ->getDesc());
-  } else {
-    _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
-  }
-  return Void();
-}
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.h b/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.h
deleted file mode 100644
index ac3aeced43..0000000000
--- a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright 2021 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 <fmq/MessageQueue.h>
-#include <hidl/MQDescriptor.h>
-
-#include "BluetoothAudioProvider.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::hardware::kSynchronizedReadWrite;
-using ::android::hardware::MessageQueue;
-
-using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
-
-class A2dpSoftwareAudioProvider : public BluetoothAudioProvider {
- public:
-  A2dpSoftwareAudioProvider();
-
-  bool isValid(const V2_1::SessionType& sessionType) override;
-  bool isValid(const V2_0::SessionType& sessionType) override;
-
-  Return<void> startSession(const sp<V2_0::IBluetoothAudioPort>& hostIf,
-                            const V2_0::AudioConfiguration& audioConfig,
-                            startSession_cb _hidl_cb) override;
-
- private:
-  // audio data queue for software encoding
-  std::unique_ptr<DataMQ> mDataMQ;
-
-  Return<void> onSessionReady(startSession_cb _hidl_cb) override;
-};
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/Android.bp b/bluetooth/audio/2.2/default/Android.bp
deleted file mode 100644
index 7a5ae75900..0000000000
--- a/bluetooth/audio/2.2/default/Android.bp
+++ /dev/null
@@ -1,37 +0,0 @@
-package {
-    // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "hardware_interfaces_license"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
-    default_applicable_licenses: ["hardware_interfaces_license"],
-}
-
-cc_library_shared {
-    name: "android.hardware.bluetooth.audio@2.2-impl",
-    defaults: ["hidl_defaults"],
-    vendor: true,
-    relative_install_path: "hw",
-    srcs: [
-        "BluetoothAudioProvidersFactory.cpp",
-        "BluetoothAudioProvider.cpp",
-        "A2dpOffloadAudioProvider.cpp",
-        "A2dpSoftwareAudioProvider.cpp",
-        "HearingAidAudioProvider.cpp",
-        "LeAudioAudioProvider.cpp",
-        "LeAudioOffloadAudioProvider.cpp",
-    ],
-    header_libs: ["libhardware_headers"],
-    shared_libs: [
-        "android.hardware.bluetooth.audio@2.0",
-        "android.hardware.bluetooth.audio@2.1",
-        "android.hardware.bluetooth.audio@2.2",
-        "libbase",
-        "libbluetooth_audio_session",
-        "libcutils",
-        "libfmq",
-        "libhidlbase",
-        "liblog",
-        "libutils",
-    ],
-}
diff --git a/bluetooth/audio/2.2/default/AudioPort_2_0_to_2_2_Wrapper.h b/bluetooth/audio/2.2/default/AudioPort_2_0_to_2_2_Wrapper.h
deleted file mode 100644
index c5613fbf6d..0000000000
--- a/bluetooth/audio/2.2/default/AudioPort_2_0_to_2_2_Wrapper.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright 2021 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/2.2/types.h>
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::sp;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::audio::common::V5_0::SinkMetadata;
-using ::android::hardware::audio::common::V5_0::SourceMetadata;
-using ::android::hardware::bluetooth::audio::V2_2::IBluetoothAudioPort;
-
-class AudioPort_2_0_to_2_2_Wrapper : public V2_2::IBluetoothAudioPort {
- public:
-  AudioPort_2_0_to_2_2_Wrapper(const sp<V2_0::IBluetoothAudioPort>& port) {
-    this->port = port;
-  }
-
-  Return<void> startStream() override { return port->startStream(); }
-  Return<void> suspendStream() override { return port->suspendStream(); }
-  Return<void> stopStream() override { return port->stopStream(); }
-  Return<void> getPresentationPosition(
-      getPresentationPosition_cb _hidl_cb) override {
-    return port->getPresentationPosition(_hidl_cb);
-  }
-  Return<void> updateMetadata(const SourceMetadata& sourceMetadata) override {
-    return port->updateMetadata(sourceMetadata);
-  }
-  Return<void> updateSinkMetadata(const SinkMetadata&) override {
-    // DO NOTHING, 2.0 AudioPort doesn't support sink metadata updates
-    return Void();
-  }
-
-  sp<V2_0::IBluetoothAudioPort> port;
-};
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
\ No newline at end of file
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvider.cpp b/bluetooth/audio/2.2/default/BluetoothAudioProvider.cpp
deleted file mode 100644
index 62511e922a..0000000000
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvider.cpp
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * Copyright 2021 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 "BTAudioProviderStub"
-
-#include "BluetoothAudioProvider.h"
-
-#include <android-base/logging.h>
-
-#include "AudioPort_2_0_to_2_2_Wrapper.h"
-#include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_2.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_2;
-using ::android::hardware::kSynchronizedReadWrite;
-using ::android::hardware::MessageQueue;
-using ::android::hardware::Void;
-
-using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
-
-void BluetoothAudioDeathRecipient::serviceDied(
-    uint64_t cookie __unused,
-    const wp<::android::hidl::base::V1_0::IBase>& who __unused) {
-  LOG(ERROR) << "BluetoothAudioDeathRecipient::" << __func__
-             << " - BluetoothAudio Service died";
-  provider_->endSession();
-}
-
-BluetoothAudioProvider::BluetoothAudioProvider()
-    : death_recipient_(new BluetoothAudioDeathRecipient(this)),
-      session_type_(V2_1::SessionType::UNKNOWN),
-      audio_config_({}) {}
-
-Return<void> BluetoothAudioProvider::startSession(
-    const sp<V2_0::IBluetoothAudioPort>& hostIf,
-    const V2_0::AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  AudioConfiguration audioConfig_2_2;
-
-  if (audioConfig.getDiscriminator() ==
-      V2_0::AudioConfiguration::hidl_discriminator::pcmConfig) {
-    audioConfig_2_2.pcmConfig(
-        {.sampleRate =
-             static_cast<V2_1::SampleRate>(audioConfig.pcmConfig().sampleRate),
-         .channelMode = audioConfig.pcmConfig().channelMode,
-         .bitsPerSample = audioConfig.pcmConfig().bitsPerSample,
-         .dataIntervalUs = 0});
-  } else {
-    audioConfig_2_2.codecConfig(audioConfig.codecConfig());
-  }
-
-  sp<V2_2::IBluetoothAudioPort> hostIf_2_2 =
-      new AudioPort_2_0_to_2_2_Wrapper(hostIf);
-  return startSession_2_2(hostIf_2_2, audioConfig_2_2, _hidl_cb);
-}
-
-Return<void> BluetoothAudioProvider::startSession_2_1(
-    const sp<V2_0::IBluetoothAudioPort>& hostIf,
-    const V2_1::AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  AudioConfiguration audioConfig_2_2;
-  if (audioConfig.getDiscriminator() ==
-      V2_1::AudioConfiguration::hidl_discriminator::leAudioCodecConfig) {
-    audioConfig_2_2.leAudioConfig().mode = LeAudioMode::UNKNOWN;
-    audioConfig_2_2.leAudioConfig().config.unicastConfig() = {
-        .streamMap = {{
-            .streamHandle = 0xFFFF,
-            .audioChannelAllocation =
-                audioConfig.leAudioCodecConfig().audioChannelAllocation,
-        }},
-        .peerDelay = 0,
-        .lc3Config = audioConfig.leAudioCodecConfig().lc3Config};
-  } else if (audioConfig.getDiscriminator() ==
-             V2_1::AudioConfiguration::hidl_discriminator::pcmConfig) {
-    audioConfig_2_2.pcmConfig(audioConfig.pcmConfig());
-  } else {
-    audioConfig_2_2.codecConfig(audioConfig.codecConfig());
-  }
-
-  sp<V2_2::IBluetoothAudioPort> hostIf_2_2 =
-      new AudioPort_2_0_to_2_2_Wrapper(hostIf);
-  return startSession_2_2(hostIf_2_2, audioConfig_2_2, _hidl_cb);
-}
-
-Return<void> BluetoothAudioProvider::startSession_2_2(
-    const sp<V2_2::IBluetoothAudioPort>& hostIf,
-    const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  if (hostIf == nullptr) {
-    _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
-    return Void();
-  }
-
-  /**
-   * Initialize the audio platform if audioConfiguration is supported.
-   * Save the IBluetoothAudioPort interface, so that it can be used
-   * later to send stream control commands to the HAL client, based on
-   * interaction with Audio framework.
-   */
-  audio_config_ = audioConfig;
-  stack_iface_ = hostIf;
-  stack_iface_->linkToDeath(death_recipient_, 0);
-
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
-            << ", AudioConfiguration=[" << toString(audio_config_) << "]";
-
-  onSessionReady(_hidl_cb);
-  return Void();
-}
-
-Return<void> BluetoothAudioProvider::streamStarted(
-    BluetoothAudioStatus status) {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
-            << ", status=" << toString(status);
-
-  /**
-   * Streaming on control path has started,
-   * HAL server should start the streaming on data path.
-   */
-  if (stack_iface_) {
-    BluetoothAudioSessionReport_2_2::ReportControlStatus(session_type_, true,
-                                                         status);
-  } else {
-    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
-                 << ", status=" << toString(status) << " has NO session";
-  }
-
-  return Void();
-}
-
-Return<void> BluetoothAudioProvider::streamSuspended(
-    BluetoothAudioStatus status) {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
-            << ", status=" << toString(status);
-
-  /**
-   * Streaming on control path has suspend,
-   * HAL server should suspend the streaming on data path.
-   */
-  if (stack_iface_) {
-    BluetoothAudioSessionReport_2_2::ReportControlStatus(session_type_, false,
-                                                         status);
-  } else {
-    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
-                 << ", status=" << toString(status) << " has NO session";
-  }
-
-  return Void();
-}
-
-Return<void> BluetoothAudioProvider::endSession() {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
-
-  if (stack_iface_) {
-    BluetoothAudioSessionReport_2_2::OnSessionEnded(session_type_);
-    stack_iface_->unlinkToDeath(death_recipient_);
-  } else {
-    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
-              << " has NO session";
-  }
-
-  /**
-   * Clean up the audio platform as remote audio device is no
-   * longer active
-   */
-  stack_iface_ = nullptr;
-  audio_config_ = {};
-
-  return Void();
-}
-
-Return<void> BluetoothAudioProvider::updateAudioConfiguration(
-    const AudioConfiguration& audioConfig) {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
-
-  if (stack_iface_ == nullptr) {
-    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
-              << " has NO session";
-    return Void();
-  }
-
-  if (audioConfig.getDiscriminator() != audio_config_.getDiscriminator()) {
-    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
-              << " audio config type is not match";
-    return Void();
-  }
-
-  audio_config_ = audioConfig;
-  BluetoothAudioSessionReport_2_2::ReportAudioConfigChanged(session_type_,
-                                                            audio_config_);
-
-  return Void();
-}
-
-Return<void> BluetoothAudioProvider::setLowLatencyModeAllowed(bool allowed) {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
-
-  if (stack_iface_ == nullptr) {
-    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
-              << " has NO session";
-    return Void();
-  }
-  LOG(INFO) << __func__ << " allowed: " << allowed;
-  return Void();
-}
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvider.h b/bluetooth/audio/2.2/default/BluetoothAudioProvider.h
deleted file mode 100644
index 90c158e5b5..0000000000
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvider.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright 2021 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/2.2/IBluetoothAudioProvider.h>
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::sp;
-using ::android::hardware::bluetooth::audio::V2_2::IBluetoothAudioPort;
-
-using BluetoothAudioStatus =
-    ::android::hardware::bluetooth::audio::V2_0::Status;
-
-class BluetoothAudioDeathRecipient;
-
-class BluetoothAudioProvider : public IBluetoothAudioProvider {
- public:
-  BluetoothAudioProvider();
-  ~BluetoothAudioProvider() = default;
-
-  virtual bool isValid(const V2_1::SessionType& sessionType) = 0;
-  virtual bool isValid(const V2_0::SessionType& sessionType) = 0;
-
-  Return<void> startSession(const sp<V2_0::IBluetoothAudioPort>& hostIf,
-                            const V2_0::AudioConfiguration& audioConfig,
-                            startSession_cb _hidl_cb) override;
-  Return<void> startSession_2_1(const sp<V2_0::IBluetoothAudioPort>& hostIf,
-                                const V2_1::AudioConfiguration& audioConfig,
-                                startSession_cb _hidl_cb) override;
-  Return<void> startSession_2_2(const sp<V2_2::IBluetoothAudioPort>& hostIf,
-                                const AudioConfiguration& audioConfig,
-                                startSession_cb _hidl_cb) override;
-  Return<void> streamStarted(BluetoothAudioStatus status) override;
-  Return<void> streamSuspended(BluetoothAudioStatus status) override;
-  Return<void> endSession() override;
-  Return<void> updateAudioConfiguration(
-      const AudioConfiguration& audioConfig) override;
-
-  Return<void> setLowLatencyModeAllowed(bool allowed) override;
-
- protected:
-  sp<BluetoothAudioDeathRecipient> death_recipient_;
-
-  V2_1::SessionType session_type_;
-  AudioConfiguration audio_config_;
-  sp<V2_2::IBluetoothAudioPort> stack_iface_;
-
-  virtual Return<void> onSessionReady(startSession_cb _hidl_cb) = 0;
-};
-
-class BluetoothAudioDeathRecipient : public hidl_death_recipient {
- public:
-  BluetoothAudioDeathRecipient(const sp<BluetoothAudioProvider> provider)
-      : provider_(provider) {}
-
-  virtual void serviceDied(
-      uint64_t cookie,
-      const wp<::android::hidl::base::V1_0::IBase>& who) override;
-
- private:
-  sp<BluetoothAudioProvider> provider_;
-};
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.cpp b/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.cpp
deleted file mode 100644
index 490a436b5e..0000000000
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.cpp
+++ /dev/null
@@ -1,269 +0,0 @@
-/*
- * Copyright 2021 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 "BTAudioProvidersFactory"
-
-#include "BluetoothAudioProvidersFactory.h"
-
-#include <android-base/logging.h>
-
-#include "BluetoothAudioSupportedCodecsDB_2_2.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::hardware::hidl_vec;
-using ::android::hardware::Void;
-using ::android::hardware::bluetooth::audio::V2_0::CodecCapabilities;
-
-A2dpSoftwareAudioProvider
-    BluetoothAudioProvidersFactory::a2dp_software_provider_instance_;
-A2dpOffloadAudioProvider
-    BluetoothAudioProvidersFactory::a2dp_offload_provider_instance_;
-HearingAidAudioProvider
-    BluetoothAudioProvidersFactory::hearing_aid_provider_instance_;
-LeAudioOutputAudioProvider
-    BluetoothAudioProvidersFactory::leaudio_output_provider_instance_;
-LeAudioOffloadOutputAudioProvider
-    BluetoothAudioProvidersFactory::leaudio_offload_output_provider_instance_;
-LeAudioInputAudioProvider
-    BluetoothAudioProvidersFactory::leaudio_input_provider_instance_;
-LeAudioOffloadInputAudioProvider
-    BluetoothAudioProvidersFactory::leaudio_offload_input_provider_instance_;
-
-Return<void> BluetoothAudioProvidersFactory::openProvider(
-    const V2_0::SessionType sessionType, openProvider_cb _hidl_cb) {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(sessionType);
-  BluetoothAudioStatus status = BluetoothAudioStatus::SUCCESS;
-  BluetoothAudioProvider* provider = nullptr;
-
-  switch (sessionType) {
-    case V2_0::SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH:
-      provider = &a2dp_software_provider_instance_;
-      break;
-    case V2_0::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH:
-      provider = &a2dp_offload_provider_instance_;
-      break;
-    case V2_0::SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH:
-      provider = &hearing_aid_provider_instance_;
-      break;
-    default:
-      status = BluetoothAudioStatus::FAILURE;
-  }
-
-  if (provider == nullptr || !provider->isValid(sessionType)) {
-    provider = nullptr;
-    status = BluetoothAudioStatus::FAILURE;
-    LOG(ERROR) << __func__ << " - SessionType=" << toString(sessionType)
-               << ", status=" << toString(status);
-  }
-
-  _hidl_cb(status, provider);
-  return Void();
-}
-
-Return<void> BluetoothAudioProvidersFactory::openProvider_2_1(
-    const V2_1::SessionType sessionType, openProvider_2_1_cb _hidl_cb) {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(sessionType);
-  BluetoothAudioStatus status = BluetoothAudioStatus::SUCCESS;
-  BluetoothAudioProvider* provider = nullptr;
-
-  switch (sessionType) {
-    case V2_1::SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH:
-      provider = &a2dp_software_provider_instance_;
-      break;
-    case V2_1::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH:
-      provider = &a2dp_offload_provider_instance_;
-      break;
-    case V2_1::SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH:
-      provider = &hearing_aid_provider_instance_;
-      break;
-    case V2_1::SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH:
-      provider = &leaudio_output_provider_instance_;
-      break;
-    case V2_1::SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH:
-      provider = &leaudio_input_provider_instance_;
-      break;
-    default:
-      status = BluetoothAudioStatus::FAILURE;
-  }
-
-  if (provider == nullptr || !provider->isValid(sessionType)) {
-    provider = nullptr;
-    status = BluetoothAudioStatus::FAILURE;
-    LOG(ERROR) << __func__ << " - SessionType=" << toString(sessionType)
-               << ", status=" << toString(status);
-  }
-
-  _hidl_cb(status, provider);
-  return Void();
-}
-
-Return<void> BluetoothAudioProvidersFactory::openProvider_2_2(
-    const V2_1::SessionType sessionType, openProvider_2_2_cb _hidl_cb) {
-  LOG(INFO) << __func__ << " - SessionType=" << toString(sessionType);
-  BluetoothAudioStatus status = BluetoothAudioStatus::SUCCESS;
-  BluetoothAudioProvider* provider = nullptr;
-
-  switch (sessionType) {
-    case V2_1::SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH:
-      provider = &a2dp_software_provider_instance_;
-      break;
-    case V2_1::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH:
-      provider = &a2dp_offload_provider_instance_;
-      break;
-    case V2_1::SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH:
-      provider = &hearing_aid_provider_instance_;
-      break;
-    case V2_1::SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH:
-      provider = &leaudio_output_provider_instance_;
-      break;
-    case V2_1::SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
-      provider = &leaudio_offload_output_provider_instance_;
-      break;
-    case V2_1::SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH:
-      provider = &leaudio_input_provider_instance_;
-      break;
-    case V2_1::SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH:
-      provider = &leaudio_offload_input_provider_instance_;
-      break;
-    default:
-      status = BluetoothAudioStatus::FAILURE;
-  }
-
-  if (provider == nullptr || !provider->isValid(sessionType)) {
-    provider = nullptr;
-    status = BluetoothAudioStatus::FAILURE;
-    LOG(ERROR) << __func__ << " - SessionType=" << toString(sessionType)
-               << ", status=" << toString(status);
-  }
-
-  _hidl_cb(status, provider);
-  return Void();
-}
-
-Return<void> BluetoothAudioProvidersFactory::getProviderCapabilities(
-    const V2_0::SessionType sessionType, getProviderCapabilities_cb _hidl_cb) {
-  hidl_vec<V2_0::AudioCapabilities> audio_capabilities =
-      hidl_vec<V2_0::AudioCapabilities>(0);
-  if (sessionType == V2_0::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
-    std::vector<CodecCapabilities> db_codec_capabilities =
-        android::bluetooth::audio::GetOffloadCodecCapabilities(sessionType);
-    if (db_codec_capabilities.size()) {
-      audio_capabilities.resize(db_codec_capabilities.size());
-      for (int i = 0; i < db_codec_capabilities.size(); ++i) {
-        audio_capabilities[i].codecCapabilities(db_codec_capabilities[i]);
-      }
-    }
-  } else if (sessionType != V2_0::SessionType::UNKNOWN) {
-    std::vector<::android::hardware::bluetooth::audio::V2_0::PcmParameters>
-        db_pcm_capabilities =
-            android::bluetooth::audio::GetSoftwarePcmCapabilities();
-    if (db_pcm_capabilities.size() == 1) {
-      audio_capabilities.resize(1);
-      audio_capabilities[0].pcmCapabilities(db_pcm_capabilities[0]);
-    }
-  }
-  LOG(INFO) << __func__ << " - SessionType=" << toString(sessionType)
-            << " supports " << audio_capabilities.size() << " codecs";
-  _hidl_cb(audio_capabilities);
-  return Void();
-}
-
-Return<void> BluetoothAudioProvidersFactory::getProviderCapabilities_2_1(
-    const V2_1::SessionType sessionType,
-    getProviderCapabilities_2_1_cb _hidl_cb) {
-  hidl_vec<V2_1::AudioCapabilities> audio_capabilities =
-      hidl_vec<V2_1::AudioCapabilities>(0);
-  if (sessionType == V2_1::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
-    std::vector<CodecCapabilities> db_codec_capabilities =
-        android::bluetooth::audio::GetOffloadCodecCapabilities(sessionType);
-    if (db_codec_capabilities.size()) {
-      audio_capabilities.resize(db_codec_capabilities.size());
-      for (int i = 0; i < db_codec_capabilities.size(); ++i) {
-        audio_capabilities[i].codecCapabilities(db_codec_capabilities[i]);
-      }
-    }
-  } else if (sessionType != V2_1::SessionType::UNKNOWN) {
-    std::vector<V2_1::PcmParameters> db_pcm_capabilities =
-        android::bluetooth::audio::GetSoftwarePcmCapabilities_2_1();
-    if (db_pcm_capabilities.size() == 1) {
-      audio_capabilities.resize(1);
-      audio_capabilities[0].pcmCapabilities(db_pcm_capabilities[0]);
-    }
-  }
-  LOG(INFO) << __func__ << " - SessionType=" << toString(sessionType)
-            << " supports " << audio_capabilities.size() << " codecs";
-  _hidl_cb(audio_capabilities);
-  return Void();
-}
-
-Return<void> BluetoothAudioProvidersFactory::getProviderCapabilities_2_2(
-    const V2_1::SessionType sessionType,
-    getProviderCapabilities_2_2_cb _hidl_cb) {
-  hidl_vec<V2_2::AudioCapabilities> audio_capabilities =
-      hidl_vec<V2_2::AudioCapabilities>(0);
-  if (sessionType == V2_1::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
-    std::vector<CodecCapabilities> db_codec_capabilities =
-        android::bluetooth::audio::GetOffloadCodecCapabilities(sessionType);
-    if (db_codec_capabilities.size()) {
-      audio_capabilities.resize(db_codec_capabilities.size());
-      for (int i = 0; i < db_codec_capabilities.size(); ++i) {
-        audio_capabilities[i].codecCapabilities(db_codec_capabilities[i]);
-      }
-    }
-  } else if (sessionType == V2_1::SessionType::
-                                LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-             sessionType == V2_1::SessionType::
-                                LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    std::vector<LeAudioCodecCapabilitiesSetting> db_codec_capabilities =
-        android::bluetooth::audio::GetLeAudioOffloadCodecCapabilities(
-            sessionType);
-    if (db_codec_capabilities.size()) {
-      audio_capabilities.resize(db_codec_capabilities.size());
-      for (int i = 0; i < db_codec_capabilities.size(); ++i) {
-        audio_capabilities[i].leAudioCapabilities(db_codec_capabilities[i]);
-      }
-    }
-  } else if (sessionType != V2_1::SessionType::UNKNOWN) {
-    std::vector<V2_1::PcmParameters> db_pcm_capabilities =
-        android::bluetooth::audio::GetSoftwarePcmCapabilities_2_1();
-    if (db_pcm_capabilities.size() == 1) {
-      audio_capabilities.resize(1);
-      audio_capabilities[0].pcmCapabilities(db_pcm_capabilities[0]);
-    }
-  }
-  LOG(INFO) << __func__ << " - SessionType=" << toString(sessionType)
-            << " supports " << audio_capabilities.size() << " codecs";
-  _hidl_cb(audio_capabilities);
-  return Void();
-}
-
-IBluetoothAudioProvidersFactory* HIDL_FETCH_IBluetoothAudioProvidersFactory(
-    const char* /* name */) {
-  return new BluetoothAudioProvidersFactory();
-}
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.h b/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.h
deleted file mode 100644
index 4f549d93ce..0000000000
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright 2021 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/2.2/IBluetoothAudioProvidersFactory.h>
-
-#include "A2dpOffloadAudioProvider.h"
-#include "A2dpSoftwareAudioProvider.h"
-#include "BluetoothAudioProvider.h"
-#include "HearingAidAudioProvider.h"
-#include "LeAudioAudioProvider.h"
-#include "LeAudioOffloadAudioProvider.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-class BluetoothAudioProvidersFactory : public IBluetoothAudioProvidersFactory {
- public:
-  BluetoothAudioProvidersFactory() {}
-
-  Return<void> openProvider(const V2_0::SessionType sessionType,
-                            openProvider_cb _hidl_cb) override;
-
-  Return<void> getProviderCapabilities(
-      const V2_0::SessionType sessionType,
-      getProviderCapabilities_cb _hidl_cb) override;
-
-  Return<void> openProvider_2_1(const V2_1::SessionType sessionType,
-                                openProvider_2_1_cb _hidl_cb) override;
-
-  Return<void> openProvider_2_2(const V2_1::SessionType sessionType,
-                                openProvider_2_2_cb _hidl_cb) override;
-
-  Return<void> getProviderCapabilities_2_1(
-      const V2_1::SessionType sessionType,
-      getProviderCapabilities_2_1_cb _hidl_cb) override;
-
-  Return<void> getProviderCapabilities_2_2(
-      const V2_1::SessionType sessionType,
-      getProviderCapabilities_2_2_cb _hidl_cb) override;
-
- private:
-  static A2dpSoftwareAudioProvider a2dp_software_provider_instance_;
-  static A2dpOffloadAudioProvider a2dp_offload_provider_instance_;
-  static HearingAidAudioProvider hearing_aid_provider_instance_;
-  static LeAudioOutputAudioProvider leaudio_output_provider_instance_;
-  static LeAudioInputAudioProvider leaudio_input_provider_instance_;
-  static LeAudioOffloadOutputAudioProvider
-      leaudio_offload_output_provider_instance_;
-  static LeAudioOffloadInputAudioProvider
-      leaudio_offload_input_provider_instance_;
-};
-
-extern "C" IBluetoothAudioProvidersFactory*
-HIDL_FETCH_IBluetoothAudioProvidersFactory(const char* name);
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/HearingAidAudioProvider.cpp b/bluetooth/audio/2.2/default/HearingAidAudioProvider.cpp
deleted file mode 100644
index 25e49a19d4..0000000000
--- a/bluetooth/audio/2.2/default/HearingAidAudioProvider.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright 2021 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 "BTAudioProviderHearingAid"
-
-#include "HearingAidAudioProvider.h"
-
-#include <android-base/logging.h>
-
-#include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_2.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_2;
-using ::android::hardware::Void;
-using ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
-
-static constexpr uint32_t kPcmFrameSize = 4;  // 16 bits per sample / stereo
-static constexpr uint32_t kPcmFrameCount = 128;
-static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
-static constexpr uint32_t kRtpFrameCount = 7;  // max counts by 1 tick (20ms)
-static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
-static constexpr uint32_t kBufferCount = 1;  // single buffer
-static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;
-
-HearingAidAudioProvider::HearingAidAudioProvider()
-    : BluetoothAudioProvider(), mDataMQ(nullptr) {
-  LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
-            << " byte(s)";
-  std::unique_ptr<DataMQ> tempDataMQ(
-      new DataMQ(kDataMqSize, /* EventFlag */ true));
-  if (tempDataMQ && tempDataMQ->isValid()) {
-    mDataMQ = std::move(tempDataMQ);
-    session_type_ = V2_1::SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH;
-  } else {
-    ALOGE_IF(!tempDataMQ, "failed to allocate data MQ");
-    ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "data MQ is invalid");
-  }
-}
-
-bool HearingAidAudioProvider::isValid(const V2_0::SessionType& sessionType) {
-  return isValid(static_cast<V2_1::SessionType>(sessionType));
-}
-
-bool HearingAidAudioProvider::isValid(const V2_1::SessionType& sessionType) {
-  return (sessionType == session_type_ && mDataMQ && mDataMQ->isValid());
-}
-
-Return<void> HearingAidAudioProvider::startSession(
-    const sp<V2_0::IBluetoothAudioPort>& hostIf,
-    const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  /**
-   * Initialize the audio platform if audioConfiguration is supported.
-   * Save the IBluetoothAudioPort interface, so that it can be used
-   * later to send stream control commands to the HAL client, based on
-   * interaction with Audio framework.
-   */
-  if (audioConfig.getDiscriminator() !=
-      AudioConfiguration::hidl_discriminator::pcmConfig) {
-    LOG(WARNING) << __func__
-                 << " - Invalid Audio Configuration=" << toString(audioConfig);
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  } else if (!android::bluetooth::audio::IsSoftwarePcmConfigurationValid(
-                 audioConfig.pcmConfig())) {
-    LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
-                 << toString(audioConfig.pcmConfig());
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  return BluetoothAudioProvider::startSession(hostIf, audioConfig, _hidl_cb);
-}
-
-Return<void> HearingAidAudioProvider::onSessionReady(startSession_cb _hidl_cb) {
-  if (mDataMQ && mDataMQ->isValid()) {
-    BluetoothAudioSessionReport_2_2::OnSessionStarted(
-        session_type_, stack_iface_, mDataMQ->getDesc(), audio_config_);
-    _hidl_cb(BluetoothAudioStatus::SUCCESS, *mDataMQ->getDesc());
-  } else {
-    _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
-  }
-  return Void();
-}
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/HearingAidAudioProvider.h b/bluetooth/audio/2.2/default/HearingAidAudioProvider.h
deleted file mode 100644
index 63290b5c09..0000000000
--- a/bluetooth/audio/2.2/default/HearingAidAudioProvider.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright 2021 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 <fmq/MessageQueue.h>
-#include <hidl/MQDescriptor.h>
-
-#include "BluetoothAudioProvider.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::hardware::kSynchronizedReadWrite;
-using ::android::hardware::MessageQueue;
-
-using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
-
-class HearingAidAudioProvider : public BluetoothAudioProvider {
- public:
-  HearingAidAudioProvider();
-
-  bool isValid(const V2_1::SessionType& sessionType) override;
-  bool isValid(const V2_0::SessionType& sessionType) override;
-
-  Return<void> startSession(const sp<V2_0::IBluetoothAudioPort>& hostIf,
-                            const V2_0::AudioConfiguration& audioConfig,
-                            startSession_cb _hidl_cb) override;
-
- private:
-  // audio data queue for software encoding
-  std::unique_ptr<DataMQ> mDataMQ;
-
-  Return<void> onSessionReady(startSession_cb _hidl_cb) override;
-};
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp b/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp
deleted file mode 100644
index a7a00233c2..0000000000
--- a/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp
+++ /dev/null
@@ -1,222 +0,0 @@
-/*
- * Copyright 2021 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 "BTAudioProviderLeAudio"
-
-#include "LeAudioAudioProvider.h"
-
-#include <android-base/logging.h>
-
-#include "AudioPort_2_0_to_2_2_Wrapper.h"
-#include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_2.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_2;
-using ::android::hardware::Void;
-using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
-using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
-using ::android::hardware::bluetooth::audio::V2_1::SampleRate;
-
-static constexpr uint32_t kBufferOutCount = 2;  // two frame buffer
-static constexpr uint32_t kBufferInCount = 2;   // two frame buffer
-
-LeAudioOutputAudioProvider::LeAudioOutputAudioProvider()
-    : LeAudioAudioProvider() {
-  session_type_ = V2_1::SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH;
-}
-
-LeAudioInputAudioProvider::LeAudioInputAudioProvider()
-    : LeAudioAudioProvider() {
-  session_type_ = V2_1::SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH;
-}
-
-LeAudioAudioProvider::LeAudioAudioProvider()
-    : BluetoothAudioProvider(), mDataMQ(nullptr) {}
-
-bool LeAudioAudioProvider::isValid(const V2_0::SessionType& sessionType) {
-  LOG(ERROR) << __func__ << ", invalid session type for Le Audio provider: "
-             << toString(sessionType);
-
-  return false;
-}
-
-bool LeAudioAudioProvider::isValid(const V2_1::SessionType& sessionType) {
-  return (sessionType == session_type_);
-}
-
-Return<void> LeAudioAudioProvider::startSession_2_1(
-    const sp<V2_0::IBluetoothAudioPort>& hostIf,
-    const V2_1::AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  if (audioConfig.getDiscriminator() !=
-      V2_1::AudioConfiguration::hidl_discriminator::pcmConfig) {
-    LOG(WARNING) << __func__
-                 << " - Invalid Audio Configuration=" << toString(audioConfig);
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  AudioConfiguration audioConfig_2_2;
-  audioConfig_2_2.pcmConfig(
-      {.sampleRate =
-           static_cast<V2_1::SampleRate>(audioConfig.pcmConfig().sampleRate),
-       .channelMode = audioConfig.pcmConfig().channelMode,
-       .bitsPerSample = audioConfig.pcmConfig().bitsPerSample,
-       .dataIntervalUs = 0});
-
-  sp<V2_2::IBluetoothAudioPort> hostIf_2_2 =
-      new AudioPort_2_0_to_2_2_Wrapper(hostIf);
-  return startSession_2_2(hostIf_2_2, audioConfig_2_2, _hidl_cb);
-}
-
-Return<void> LeAudioAudioProvider::startSession_2_2(
-    const sp<V2_2::IBluetoothAudioPort>& hostIf,
-    const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  /**
-   * Initialize the audio platform if audioConfiguration is supported.
-   * Save the IBluetoothAudioPort interface, so that it can be used
-   * later to send stream control commands to the HAL client, based on
-   * interaction with Audio framework.
-   */
-  if (audioConfig.getDiscriminator() !=
-      AudioConfiguration::hidl_discriminator::pcmConfig) {
-    LOG(WARNING) << __func__
-                 << " - Invalid Audio Configuration=" << toString(audioConfig);
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  } else if (!android::bluetooth::audio::IsSoftwarePcmConfigurationValid_2_1(
-                 audioConfig.pcmConfig())) {
-    LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
-                 << toString(audioConfig.pcmConfig());
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  uint32_t kDataMqSize = 0;
-  switch (audioConfig.pcmConfig().sampleRate) {
-    case SampleRate::RATE_8000:
-      kDataMqSize = 8000;
-      break;
-    case SampleRate::RATE_16000:
-      kDataMqSize = 16000;
-      break;
-    case SampleRate::RATE_24000:
-      kDataMqSize = 24000;
-      break;
-    case SampleRate::RATE_32000:
-      kDataMqSize = 32000;
-      break;
-    case SampleRate::RATE_44100:
-      kDataMqSize = 44100;
-      break;
-    case SampleRate::RATE_48000:
-      kDataMqSize = 48000;
-      break;
-    default:
-      LOG(WARNING) << __func__ << " - Unsupported sampling frequency="
-                   << toString(audioConfig.pcmConfig());
-      _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-               DataMQ::Descriptor());
-      return Void();
-  }
-
-  /* Number of samples per millisecond */
-  kDataMqSize = ceil(kDataMqSize / 1000);
-
-  switch (audioConfig.pcmConfig().channelMode) {
-    case ChannelMode::MONO:
-      break;
-    case ChannelMode::STEREO:
-      kDataMqSize *= 2;
-      break;
-    default:
-      /* This should never happen it would be caught while validating
-       * parameters.
-       */
-      break;
-  }
-
-  switch (audioConfig.pcmConfig().bitsPerSample) {
-    case BitsPerSample::BITS_16:
-      kDataMqSize *= 2;
-      break;
-    case BitsPerSample::BITS_24:
-      kDataMqSize *= 3;
-      break;
-    case BitsPerSample::BITS_32:
-      kDataMqSize *= 4;
-      break;
-    default:
-      /* This should never happen it would be caught while validating
-       * parameters.
-       */
-      break;
-  }
-
-  if (session_type_ == V2_1::SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH)
-    kDataMqSize *= kBufferOutCount;
-  else if (session_type_ ==
-           V2_1::SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH)
-    kDataMqSize *= kBufferInCount;
-  else
-    LOG(WARNING) << __func__ << ", default single buffer used";
-
-  kDataMqSize *= audioConfig.pcmConfig().dataIntervalUs / 1000;
-
-  LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
-            << " byte(s)";
-
-  std::unique_ptr<DataMQ> tempDataMQ(
-      new DataMQ(kDataMqSize, /* EventFlag */ true));
-  if (tempDataMQ && tempDataMQ->isValid()) {
-    mDataMQ = std::move(tempDataMQ);
-  } else {
-    ALOGE_IF(!tempDataMQ, "failed to allocate data MQ");
-    ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "data MQ is invalid");
-    _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
-    return Void();
-  }
-
-  return BluetoothAudioProvider::startSession_2_2(hostIf, audioConfig,
-                                                  _hidl_cb);
-}
-
-Return<void> LeAudioAudioProvider::onSessionReady(startSession_cb _hidl_cb) {
-  if (mDataMQ && mDataMQ->isValid()) {
-    BluetoothAudioSessionReport_2_2::OnSessionStarted(
-        session_type_, stack_iface_, mDataMQ->getDesc(), audio_config_);
-    _hidl_cb(BluetoothAudioStatus::SUCCESS, *mDataMQ->getDesc());
-  } else {
-    _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
-  }
-  return Void();
-}
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/LeAudioAudioProvider.h b/bluetooth/audio/2.2/default/LeAudioAudioProvider.h
deleted file mode 100644
index 3de1724bd8..0000000000
--- a/bluetooth/audio/2.2/default/LeAudioAudioProvider.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright 2021 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/2.2/types.h>
-#include <fmq/MessageQueue.h>
-#include <hidl/MQDescriptor.h>
-
-#include "BluetoothAudioProvider.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::hardware::kSynchronizedReadWrite;
-using ::android::hardware::MessageQueue;
-
-using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
-
-class LeAudioAudioProvider : public BluetoothAudioProvider {
- public:
-  LeAudioAudioProvider();
-
-  bool isValid(const V2_1::SessionType& sessionType) override;
-  bool isValid(const V2_0::SessionType& sessionType) override;
-
-  Return<void> startSession_2_1(const sp<V2_0::IBluetoothAudioPort>& hostIf,
-                                const V2_1::AudioConfiguration& audioConfig,
-                                startSession_cb _hidl_cb) override;
-
-  Return<void> startSession_2_2(const sp<V2_2::IBluetoothAudioPort>& hostIf,
-                                const AudioConfiguration& audioConfig,
-                                startSession_cb _hidl_cb) override;
-
- private:
-  /** queue for software encodec/decoded audio data */
-  std::unique_ptr<DataMQ> mDataMQ;
-
-  Return<void> onSessionReady(startSession_cb _hidl_cb) override;
-};
-
-class LeAudioOutputAudioProvider : public LeAudioAudioProvider {
- public:
-  LeAudioOutputAudioProvider();
-};
-
-class LeAudioInputAudioProvider : public LeAudioAudioProvider {
- public:
-  LeAudioInputAudioProvider();
-};
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.cpp b/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.cpp
deleted file mode 100644
index 2b0c02f09d..0000000000
--- a/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.cpp
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * Copyright 2021 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 "BTAudioProviderLeAudioOffload"
-
-#include "LeAudioOffloadAudioProvider.h"
-
-#include <android-base/logging.h>
-
-#include "AudioPort_2_0_to_2_2_Wrapper.h"
-#include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_2.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_2;
-using ::android::hardware::Void;
-using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
-using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
-using ::android::hardware::bluetooth::audio::V2_1::SampleRate;
-
-using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
-
-LeAudioOffloadOutputAudioProvider::LeAudioOffloadOutputAudioProvider()
-    : LeAudioOffloadAudioProvider() {
-  session_type_ =
-      V2_1::SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
-}
-
-LeAudioOffloadInputAudioProvider::LeAudioOffloadInputAudioProvider()
-    : LeAudioOffloadAudioProvider() {
-  session_type_ =
-      V2_1::SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH;
-}
-
-LeAudioOffloadAudioProvider::LeAudioOffloadAudioProvider()
-    : BluetoothAudioProvider() {}
-
-bool LeAudioOffloadAudioProvider::isValid(
-    const V2_0::SessionType& sessionType) {
-  LOG(ERROR) << __func__
-             << ", invalid session type for Offloaded Le Audio provider: "
-             << toString(sessionType);
-
-  return false;
-}
-
-bool LeAudioOffloadAudioProvider::isValid(
-    const V2_1::SessionType& sessionType) {
-  return (sessionType == session_type_);
-}
-
-Return<void> LeAudioOffloadAudioProvider::startSession_2_1(
-    const sp<V2_0::IBluetoothAudioPort>& hostIf,
-    const V2_1::AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  if (audioConfig.getDiscriminator() !=
-      V2_1::AudioConfiguration::hidl_discriminator::leAudioCodecConfig) {
-    LOG(WARNING) << __func__
-                 << " - Invalid Audio Configuration=" << toString(audioConfig);
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  AudioConfiguration audioConfig_2_2;
-  audioConfig_2_2.leAudioConfig().mode = LeAudioMode::UNKNOWN;
-  audioConfig_2_2.leAudioConfig().config.unicastConfig() = {
-      .streamMap = {{
-          .streamHandle = 0xFFFF,
-          .audioChannelAllocation =
-              audioConfig.leAudioCodecConfig().audioChannelAllocation,
-      }},
-      .peerDelay = 0,
-      .lc3Config = audioConfig.leAudioCodecConfig().lc3Config};
-
-  sp<V2_2::IBluetoothAudioPort> hostIf_2_2 =
-      new AudioPort_2_0_to_2_2_Wrapper(hostIf);
-  return startSession_2_2(hostIf_2_2, audioConfig_2_2, _hidl_cb);
-}
-
-Return<void> LeAudioOffloadAudioProvider::startSession_2_2(
-    const sp<V2_2::IBluetoothAudioPort>& hostIf,
-    const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
-  /**
-   * Initialize the audio platform if audioConfiguration is supported.
-   * Save the IBluetoothAudioPort interface, so that it can be used
-   * later to send stream control commands to the HAL client, based on
-   * interaction with Audio framework.
-   */
-  if (audioConfig.getDiscriminator() !=
-      AudioConfiguration::hidl_discriminator::leAudioConfig) {
-    LOG(WARNING) << __func__
-                 << " - Invalid Audio Configuration=" << toString(audioConfig);
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  if (!android::bluetooth::audio::IsOffloadLeAudioConfigurationValid(
-          session_type_, audioConfig.leAudioConfig())) {
-    LOG(WARNING) << __func__ << " - Unsupported LC3 Offloaded Configuration="
-                 << toString(audioConfig.leAudioConfig());
-    _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
-             DataMQ::Descriptor());
-    return Void();
-  }
-
-  return BluetoothAudioProvider::startSession_2_2(hostIf, audioConfig,
-                                                  _hidl_cb);
-}
-
-Return<void> LeAudioOffloadAudioProvider::onSessionReady(
-    startSession_cb _hidl_cb) {
-  BluetoothAudioSessionReport_2_2::OnSessionStarted(session_type_, stack_iface_,
-                                                    nullptr, audio_config_);
-  _hidl_cb(BluetoothAudioStatus::SUCCESS, DataMQ::Descriptor());
-  return Void();
-}
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.h b/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.h
deleted file mode 100644
index fe58de527d..0000000000
--- a/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright 2021 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/2.2/types.h>
-
-#include "BluetoothAudioProvider.h"
-
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-namespace V2_2 {
-namespace implementation {
-
-class LeAudioOffloadAudioProvider : public BluetoothAudioProvider {
- public:
-  LeAudioOffloadAudioProvider();
-
-  bool isValid(const V2_1::SessionType& sessionType) override;
-  bool isValid(const V2_0::SessionType& sessionType) override;
-
-  Return<void> startSession_2_1(const sp<V2_0::IBluetoothAudioPort>& hostIf,
-                                const V2_1::AudioConfiguration& audioConfig,
-                                startSession_cb _hidl_cb) override;
-
-  Return<void> startSession_2_2(const sp<V2_2::IBluetoothAudioPort>& hostIf,
-                                const AudioConfiguration& audioConfig,
-                                startSession_cb _hidl_cb) override;
-
- private:
-  Return<void> onSessionReady(startSession_cb _hidl_cb) override;
-};
-
-class LeAudioOffloadOutputAudioProvider : public LeAudioOffloadAudioProvider {
- public:
-  LeAudioOffloadOutputAudioProvider();
-};
-
-class LeAudioOffloadInputAudioProvider : public LeAudioOffloadAudioProvider {
- public:
-  LeAudioOffloadInputAudioProvider();
-};
-
-}  // namespace implementation
-}  // namespace V2_2
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
diff --git a/bluetooth/audio/2.2/default/OWNERS b/bluetooth/audio/2.2/default/OWNERS
deleted file mode 100644
index 17ea46424f..0000000000
--- a/bluetooth/audio/2.2/default/OWNERS
+++ /dev/null
@@ -1,4 +0,0 @@
-include platform/packages/modules/Bluetooth:/OWNERS
-
-cheneyni@google.com
-aliceypkuo@google.com
\ No newline at end of file
diff --git a/bluetooth/audio/utils/Android.bp b/bluetooth/audio/utils/Android.bp
index 974357e278..42f9455623 100644
--- a/bluetooth/audio/utils/Android.bp
+++ b/bluetooth/audio/utils/Android.bp
@@ -14,10 +14,8 @@ cc_library_shared {
     srcs: [
         "session/BluetoothAudioSession.cpp",
         "session/BluetoothAudioSession_2_1.cpp",
-        "session/BluetoothAudioSession_2_2.cpp",
         "session/BluetoothAudioSupportedCodecsDB.cpp",
         "session/BluetoothAudioSupportedCodecsDB_2_1.cpp",
-        "session/BluetoothAudioSupportedCodecsDB_2_2.cpp",
     ],
     export_include_dirs: ["session/"],
     header_libs: ["libhardware_headers"],
@@ -25,7 +23,6 @@ cc_library_shared {
         "android.hardware.audio.common@5.0",
         "android.hardware.bluetooth.audio@2.0",
         "android.hardware.bluetooth.audio@2.1",
-        "android.hardware.bluetooth.audio@2.2",
         "libbase",
         "libcutils",
         "libfmq",
@@ -49,7 +46,6 @@ cc_library_shared {
     shared_libs: [
         "android.hardware.bluetooth.audio@2.0",
         "android.hardware.bluetooth.audio@2.1",
-        "android.hardware.bluetooth.audio@2.2",
         "libbase",
         "libcutils",
         "libbinder_ndk",
diff --git a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware.cpp b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware.cpp
index 1ef9365918..a4664f1636 100644
--- a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware.cpp
+++ b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware.cpp
@@ -28,7 +28,6 @@
 #include "../aidl_session/BluetoothAudioSessionControl.h"
 #include "HidlToAidlMiddleware_2_0.h"
 #include "HidlToAidlMiddleware_2_1.h"
-#include "HidlToAidlMiddleware_2_2.h"
 
 namespace aidl {
 namespace android {
@@ -82,15 +81,10 @@ using Lc3Config_2_1 =
 using Lc3FrameDuration_2_1 =
     ::android::hardware::bluetooth::audio::V2_1::Lc3FrameDuration;
 
-using LeAudioConfig_2_2 =
-    ::android::hardware::bluetooth::audio::V2_2::LeAudioConfiguration;
-using LeAudioMode_2_2 =
-    ::android::hardware::bluetooth::audio::V2_2::LeAudioMode;
-
 std::mutex legacy_callback_lock;
 std::unordered_map<
     SessionType,
-    std::unordered_map<uint16_t, std::shared_ptr<PortStatusCallbacks_2_2>>>
+    std::unordered_map<uint16_t, std::shared_ptr<PortStatusCallbacks_2_0>>>
     legacy_callback_table;
 
 const static std::unordered_map<SessionType_2_1, SessionType>
@@ -461,50 +455,6 @@ inline Lc3CodecConfig_2_1 to_hidl_leaudio_broadcast_config_2_1(
   return hidl_lc3_codec_config;
 }
 
-inline LeAudioConfig_2_2 to_hidl_leaudio_config_2_2(
-    const LeAudioConfiguration& unicast_config) {
-  LeAudioConfig_2_2 hidl_leaudio_config;
-  hidl_leaudio_config.mode = LeAudioMode_2_2::UNICAST;
-  ::android::hardware::bluetooth::audio::V2_2::UnicastConfig
-      hidl_unicast_config;
-  hidl_unicast_config.peerDelay =
-      static_cast<uint32_t>(unicast_config.peerDelayUs / 1000);
-
-  auto& lc3_config = unicast_config.leAudioCodecConfig
-                         .get<LeAudioCodecConfiguration::lc3Config>();
-  hidl_unicast_config.lc3Config = to_hidl_lc3_config_2_1(lc3_config);
-
-  hidl_unicast_config.streamMap.resize(unicast_config.streamMap.size());
-  for (int i = 0; i < unicast_config.streamMap.size(); i++) {
-    hidl_unicast_config.streamMap[i].audioChannelAllocation =
-        static_cast<uint32_t>(
-            unicast_config.streamMap[i].audioChannelAllocation);
-    hidl_unicast_config.streamMap[i].streamHandle =
-        static_cast<uint16_t>(unicast_config.streamMap[i].streamHandle);
-  }
-  return hidl_leaudio_config;
-}
-
-inline LeAudioConfig_2_2 to_hidl_leaudio_broadcast_config_2_2(
-    const LeAudioBroadcastConfiguration& broadcast_config) {
-  LeAudioConfig_2_2 hidl_leaudio_config;
-  hidl_leaudio_config.mode = LeAudioMode_2_2::BROADCAST;
-  ::android::hardware::bluetooth::audio::V2_2::BroadcastConfig
-      hidl_bcast_config;
-  hidl_bcast_config.streamMap.resize(broadcast_config.streamMap.size());
-  for (int i = 0; i < broadcast_config.streamMap.size(); i++) {
-    hidl_bcast_config.streamMap[i].audioChannelAllocation =
-        static_cast<uint32_t>(
-            broadcast_config.streamMap[i].audioChannelAllocation);
-    hidl_bcast_config.streamMap[i].streamHandle =
-        static_cast<uint16_t>(broadcast_config.streamMap[i].streamHandle);
-    hidl_bcast_config.streamMap[i].lc3Config = to_hidl_lc3_config_2_1(
-        broadcast_config.streamMap[i]
-            .leAudioCodecConfig.get<LeAudioCodecConfiguration::lc3Config>());
-  }
-  return hidl_leaudio_config;
-}
-
 inline AudioConfig_2_1 to_hidl_audio_config_2_1(
     const AudioConfiguration& audio_config) {
   AudioConfig_2_1 hidl_audio_config;
@@ -529,30 +479,6 @@ inline AudioConfig_2_1 to_hidl_audio_config_2_1(
   return hidl_audio_config;
 }
 
-inline AudioConfig_2_2 to_hidl_audio_config_2_2(
-    const AudioConfiguration& audio_config) {
-  AudioConfig_2_2 hidl_audio_config;
-  switch (audio_config.getTag()) {
-    case AudioConfiguration::pcmConfig:
-      hidl_audio_config.pcmConfig(to_hidl_pcm_config_2_1(
-          audio_config.get<AudioConfiguration::pcmConfig>()));
-      break;
-    case AudioConfiguration::a2dpConfig:
-      hidl_audio_config.codecConfig(to_hidl_codec_config_2_0(
-          audio_config.get<AudioConfiguration::a2dpConfig>()));
-      break;
-    case AudioConfiguration::leAudioConfig:
-      hidl_audio_config.leAudioConfig(to_hidl_leaudio_config_2_2(
-          audio_config.get<AudioConfiguration::leAudioConfig>()));
-      break;
-    case AudioConfiguration::leAudioBroadcastConfig:
-      hidl_audio_config.leAudioConfig(to_hidl_leaudio_broadcast_config_2_2(
-          audio_config.get<AudioConfiguration::leAudioBroadcastConfig>()));
-      break;
-  }
-  return hidl_audio_config;
-}
-
 /***
  *
  * 2.0
@@ -568,18 +494,58 @@ bool HidlToAidlMiddleware_2_0::IsSessionReady(
 uint16_t HidlToAidlMiddleware_2_0::RegisterControlResultCback(
     const SessionType_2_0& session_type,
     const PortStatusCallbacks_2_0& cbacks) {
-  PortStatusCallbacks_2_2 callback_2_2{
-      .control_result_cb_ = cbacks.control_result_cb_,
-      .session_changed_cb_ = cbacks.session_changed_cb_,
+  LOG(INFO) << __func__ << ": " << toString(session_type);
+  auto aidl_session_type = from_session_type_2_0(session_type);
+  // Pass the exact reference to the lambda
+  auto& session_legacy_callback_table =
+      legacy_callback_table[aidl_session_type];
+  PortStatusCallbacks aidl_callbacks{};
+  if (cbacks.control_result_cb_) {
+    aidl_callbacks.control_result_cb_ =
+        [&session_legacy_callback_table](uint16_t cookie, bool start_resp,
+                                         const BluetoothAudioStatus& status) {
+          if (session_legacy_callback_table.find(cookie) ==
+              session_legacy_callback_table.end()) {
+            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
+            return;
+          }
+          auto& cback = session_legacy_callback_table[cookie];
+          cback->control_result_cb_(cookie, start_resp, to_hidl_status(status));
+        };
+  }
+  if (cbacks.session_changed_cb_) {
+    aidl_callbacks.session_changed_cb_ =
+        [&session_legacy_callback_table](uint16_t cookie) {
+          if (session_legacy_callback_table.find(cookie) ==
+              session_legacy_callback_table.end()) {
+            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
+            return;
+          }
+          auto& cback = session_legacy_callback_table[cookie];
+          cback->session_changed_cb_(cookie);
+        };
   };
-  return HidlToAidlMiddleware_2_2::RegisterControlResultCback(
-      static_cast<SessionType_2_1>(session_type), callback_2_2);
+  auto cookie = BluetoothAudioSessionControl::RegisterControlResultCback(
+      aidl_session_type, aidl_callbacks);
+  {
+    std::lock_guard<std::mutex> guard(legacy_callback_lock);
+    session_legacy_callback_table[cookie] =
+        std::make_shared<PortStatusCallbacks_2_0>(cbacks);
+  }
+  return cookie;
 }
 
 void HidlToAidlMiddleware_2_0::UnregisterControlResultCback(
     const SessionType_2_0& session_type, uint16_t cookie) {
-  HidlToAidlMiddleware_2_2::UnregisterControlResultCback(
-      static_cast<SessionType_2_1>(session_type), cookie);
+  LOG(INFO) << __func__ << ": " << toString(session_type);
+  auto aidl_session_type = from_session_type_2_0(session_type);
+  BluetoothAudioSessionControl::UnregisterControlResultCback(aidl_session_type,
+                                                             cookie);
+  auto& session_callback_table = legacy_callback_table[aidl_session_type];
+  if (session_callback_table.find(cookie) != session_callback_table.end()) {
+    std::lock_guard<std::mutex> guard(legacy_callback_lock);
+    session_callback_table.erase(cookie);
+  }
 }
 
 const AudioConfig_2_0 HidlToAidlMiddleware_2_0::GetAudioConfig(
@@ -659,124 +625,6 @@ const AudioConfig_2_1 HidlToAidlMiddleware_2_1::GetAudioConfig(
       from_session_type_2_1(session_type)));
 }
 
-/***
- *
- * 2.2
- *
- ***/
-
-bool HidlToAidlMiddleware_2_2::IsSessionReady(
-    const SessionType_2_1& session_type) {
-  return BluetoothAudioSessionControl::IsSessionReady(
-      from_session_type_2_1(session_type));
-}
-
-uint16_t HidlToAidlMiddleware_2_2::RegisterControlResultCback(
-    const SessionType_2_1& session_type,
-    const PortStatusCallbacks_2_2& cbacks) {
-  LOG(INFO) << __func__ << ": " << toString(session_type);
-  auto aidl_session_type = from_session_type_2_1(session_type);
-  // Pass the exact reference to the lambda
-  auto& session_legacy_callback_table =
-      legacy_callback_table[aidl_session_type];
-  PortStatusCallbacks aidl_callbacks{};
-  if (cbacks.control_result_cb_) {
-    aidl_callbacks.control_result_cb_ =
-        [&session_legacy_callback_table](uint16_t cookie, bool start_resp,
-                                         const BluetoothAudioStatus& status) {
-          if (session_legacy_callback_table.find(cookie) ==
-              session_legacy_callback_table.end()) {
-            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
-            return;
-          }
-          auto& cback = session_legacy_callback_table[cookie];
-          cback->control_result_cb_(cookie, start_resp, to_hidl_status(status));
-        };
-  }
-  if (cbacks.session_changed_cb_) {
-    aidl_callbacks.session_changed_cb_ =
-        [&session_legacy_callback_table](uint16_t cookie) {
-          if (session_legacy_callback_table.find(cookie) ==
-              session_legacy_callback_table.end()) {
-            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
-            return;
-          }
-          auto& cback = session_legacy_callback_table[cookie];
-          cback->session_changed_cb_(cookie);
-        };
-  };
-  if (cbacks.audio_configuration_changed_cb_) {
-    aidl_callbacks.audio_configuration_changed_cb_ =
-        [&session_legacy_callback_table](uint16_t cookie) {
-          if (session_legacy_callback_table.find(cookie) ==
-              session_legacy_callback_table.end()) {
-            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
-            return;
-          }
-          auto& cback = session_legacy_callback_table[cookie];
-          cback->audio_configuration_changed_cb_(cookie);
-        };
-  };
-  auto cookie = BluetoothAudioSessionControl::RegisterControlResultCback(
-      aidl_session_type, aidl_callbacks);
-  {
-    std::lock_guard<std::mutex> guard(legacy_callback_lock);
-    session_legacy_callback_table[cookie] =
-        std::make_shared<PortStatusCallbacks_2_2>(cbacks);
-  }
-  return cookie;
-}
-
-void HidlToAidlMiddleware_2_2::UnregisterControlResultCback(
-    const SessionType_2_1& session_type, uint16_t cookie) {
-  LOG(INFO) << __func__ << ": " << toString(session_type);
-  auto aidl_session_type = from_session_type_2_1(session_type);
-  BluetoothAudioSessionControl::UnregisterControlResultCback(aidl_session_type,
-                                                             cookie);
-  auto& session_callback_table = legacy_callback_table[aidl_session_type];
-  if (session_callback_table.find(cookie) != session_callback_table.end()) {
-    std::lock_guard<std::mutex> guard(legacy_callback_lock);
-    session_callback_table.erase(cookie);
-  }
-}
-
-const AudioConfig_2_2 HidlToAidlMiddleware_2_2::GetAudioConfig(
-    const SessionType_2_1& session_type) {
-  return to_hidl_audio_config_2_2(BluetoothAudioSessionControl::GetAudioConfig(
-      from_session_type_2_1(session_type)));
-}
-
-bool HidlToAidlMiddleware_2_2::StartStream(
-    const SessionType_2_1& session_type) {
-  return BluetoothAudioSessionControl::StartStream(
-      from_session_type_2_1(session_type));
-}
-
-bool HidlToAidlMiddleware_2_2::SuspendStream(
-    const SessionType_2_1& session_type) {
-  return BluetoothAudioSessionControl::SuspendStream(
-      from_session_type_2_1(session_type));
-}
-
-void HidlToAidlMiddleware_2_2::StopStream(const SessionType_2_1& session_type) {
-  return BluetoothAudioSessionControl::StopStream(
-      from_session_type_2_1(session_type));
-}
-
-void HidlToAidlMiddleware_2_2::UpdateTracksMetadata(
-    const SessionType_2_1& session_type,
-    const struct source_metadata* source_metadata) {
-  return BluetoothAudioSessionControl::UpdateSourceMetadata(
-      from_session_type_2_1(session_type), *source_metadata);
-}
-
-void HidlToAidlMiddleware_2_2::UpdateSinkMetadata(
-    const SessionType_2_1& session_type,
-    const struct sink_metadata* sink_metadata) {
-  return BluetoothAudioSessionControl::UpdateSinkMetadata(
-      from_session_type_2_1(session_type), *sink_metadata);
-}
-
 }  // namespace audio
 }  // namespace bluetooth
 }  // namespace hardware
diff --git a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_2.h b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_2.h
deleted file mode 100644
index f6c3e5c731..0000000000
--- a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_2.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Copyright (C) 2022 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.
- */
-
-#include <android/hardware/bluetooth/audio/2.2/types.h>
-
-#include "../session/BluetoothAudioSession.h"
-#include "../session/BluetoothAudioSession_2_2.h"
-
-namespace aidl {
-namespace android {
-namespace hardware {
-namespace bluetooth {
-namespace audio {
-
-using SessionType_2_1 =
-    ::android::hardware::bluetooth::audio::V2_1::SessionType;
-using PortStatusCallbacks_2_0 =
-    ::android::bluetooth::audio::PortStatusCallbacks;
-using PortStatusCallbacks_2_2 =
-    ::android::bluetooth::audio::PortStatusCallbacks_2_2;
-using AudioConfig_2_2 =
-    ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration;
-
-class HidlToAidlMiddleware_2_2 {
- public:
-  static bool IsSessionReady(const SessionType_2_1& session_type);
-
-  static uint16_t RegisterControlResultCback(
-      const SessionType_2_1& session_type,
-      const PortStatusCallbacks_2_2& cbacks);
-
-  static void UnregisterControlResultCback(const SessionType_2_1& session_type,
-                                           uint16_t cookie);
-
-  static const AudioConfig_2_2 GetAudioConfig(
-      const SessionType_2_1& session_type);
-
-  static bool StartStream(const SessionType_2_1& session_type);
-
-  static bool SuspendStream(const SessionType_2_1& session_type);
-
-  static void StopStream(const SessionType_2_1& session_type);
-
-  static void UpdateTracksMetadata(
-      const SessionType_2_1& session_type,
-      const struct source_metadata* source_metadata);
-
-  static void UpdateSinkMetadata(const SessionType_2_1& session_type,
-                                 const struct sink_metadata* sink_metadata);
-};
-
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace hardware
-}  // namespace android
-}  // namespace aidl
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSessionControl_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSessionControl_2_2.h
deleted file mode 100644
index c270ef0d6b..0000000000
--- a/bluetooth/audio/utils/session/BluetoothAudioSessionControl_2_2.h
+++ /dev/null
@@ -1,193 +0,0 @@
-/*
- * 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_2_2.h"
-
-namespace android {
-namespace bluetooth {
-namespace audio {
-
-class BluetoothAudioSessionControl_2_2 {
-  using SessionType_2_1 =
-      ::android::hardware::bluetooth::audio::V2_1::SessionType;
-  using AudioConfiguration_2_2 =
-      ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration;
-
- 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_2_1& session_type) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::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_2_1& session_type, const PortStatusCallbacks& cbacks) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      PortStatusCallbacks_2_2 cb = {
-          .control_result_cb_ = cbacks.control_result_cb_,
-          .session_changed_cb_ = cbacks.session_changed_cb_,
-          .audio_configuration_changed_cb_ = nullptr};
-      return session_ptr->RegisterStatusCback(cb);
-    }
-    return kObserversCookieUndefined;
-  }
-
-  // The control API helps the bluetooth_audio module to register
-  // PortStatusCallbacks_2_2
-  // @return: cookie - the assigned number to this bluetooth_audio output
-  static uint16_t RegisterControlResultCback(
-      const SessionType_2_1& session_type,
-      const PortStatusCallbacks_2_2& cbacks) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::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 and PortStatusCallbacks_2_2
-  // @param: cookie - indicates which bluetooth_audio output is
-  static void UnregisterControlResultCback(const SessionType_2_1& session_type,
-                                           uint16_t cookie) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::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_2_2 GetAudioConfig(
-      const SessionType_2_1& session_type) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      return session_ptr->GetAudioConfig();
-    } else if (session_type ==
-               SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
-      return BluetoothAudioSession_2_2::kInvalidOffloadAudioConfiguration;
-    } else if (
-        session_type ==
-            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-        session_type ==
-            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-      return BluetoothAudioSession_2_2::kInvalidLeOffloadAudioConfiguration;
-    } else {
-      return BluetoothAudioSession_2_2::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_2_1& session_type) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      return session_ptr->StartStream();
-    }
-    return false;
-  }
-
-  static bool SuspendStream(const SessionType_2_1& session_type) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      return session_ptr->SuspendStream();
-    }
-    return false;
-  }
-
-  static void StopStream(const SessionType_2_1& session_type) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      session_ptr->StopStream();
-    }
-  }
-
-  static bool GetPresentationPosition(const SessionType_2_1& session_type,
-                                      uint64_t* remote_delay_report_ns,
-                                      uint64_t* total_bytes_readed,
-                                      timespec* data_position) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      return session_ptr->GetAudioSession()->GetPresentationPosition(
-          remote_delay_report_ns, total_bytes_readed, data_position);
-    }
-    return false;
-  }
-
-  static void UpdateTracksMetadata(
-      const SessionType_2_1& session_type,
-      const struct source_metadata* source_metadata) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      session_ptr->UpdateTracksMetadata(source_metadata);
-    }
-  }
-
-  static void UpdateSinkMetadata(const SessionType_2_1& session_type,
-                                 const struct sink_metadata* sink_metadata) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      session_ptr->UpdateSinkMetadata(sink_metadata);
-    }
-  }
-
-  // The control API writes stream to FMQ
-  static size_t OutWritePcmData(const SessionType_2_1& session_type,
-                                const void* buffer, size_t bytes) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      return session_ptr->GetAudioSession()->OutWritePcmData(buffer, bytes);
-    }
-    return 0;
-  }
-
-  // The control API reads stream from FMQ
-  static size_t InReadPcmData(const SessionType_2_1& session_type, void* buffer,
-                              size_t bytes) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      return session_ptr->GetAudioSession()->InReadPcmData(buffer, bytes);
-    }
-    return 0;
-  }
-};
-
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSessionReport_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSessionReport_2_2.h
deleted file mode 100644
index 17e140e60f..0000000000
--- a/bluetooth/audio/utils/session/BluetoothAudioSessionReport_2_2.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright 2021 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_2_2.h"
-
-namespace android {
-namespace bluetooth {
-namespace audio {
-
-class BluetoothAudioSessionReport_2_2 {
- public:
-  // The API reports the Bluetooth stack has started the session, and will
-  // inform registered bluetooth_audio outputs
-  static void OnSessionStarted(
-      const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-          session_type,
-      const sp<IBluetoothAudioPort> host_iface,
-      const DataMQ::Descriptor* dataMQ,
-      const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
-          audio_config) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::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 ::android::hardware::bluetooth::audio::V2_1::SessionType&
-          session_type) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::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 ::android::hardware::bluetooth::audio::V2_1::SessionType&
-          session_type,
-      const bool& start_resp, const BluetoothAudioStatus& status) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      session_ptr->ReportControlStatus(start_resp, status);
-    }
-  }
-  // The API reports the Bluetooth stack has replied the changed of the audio
-  // configuration, and will inform registered bluetooth_audio outputs
-  static void ReportAudioConfigChanged(
-      const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-          session_type,
-      const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
-          audio_config) {
-    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
-        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
-    if (session_ptr != nullptr) {
-      session_ptr->ReportAudioConfigChanged(audio_config);
-    }
-  }
-};
-
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.cpp b/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.cpp
deleted file mode 100644
index ceb0662b0a..0000000000
--- a/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.cpp
+++ /dev/null
@@ -1,636 +0,0 @@
-/*
- * 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_2_2"
-
-#include "BluetoothAudioSession_2_2.h"
-
-#include <android-base/logging.h>
-#include <android-base/stringprintf.h>
-#include <android/hardware/bluetooth/audio/2.2/IBluetoothAudioPort.h>
-
-#include "../aidl_session/HidlToAidlMiddleware_2_0.h"
-#include "../aidl_session/HidlToAidlMiddleware_2_2.h"
-
-namespace android {
-namespace bluetooth {
-namespace audio {
-
-using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_0;
-using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_2;
-using ::android::hardware::audio::common::V5_0::AudioContentType;
-using ::android::hardware::audio::common::V5_0::AudioSource;
-using ::android::hardware::audio::common::V5_0::AudioUsage;
-using ::android::hardware::audio::common::V5_0::PlaybackTrackMetadata;
-using ::android::hardware::audio::common::V5_0::RecordTrackMetadata;
-using ::android::hardware::audio::common::V5_0::SinkMetadata;
-using ::android::hardware::audio::common::V5_0::SourceMetadata;
-using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
-using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
-using ::android::hardware::bluetooth::audio::V2_2::LeAudioConfiguration;
-using ::android::hardware::bluetooth::audio::V2_2::LeAudioMode;
-using PcmParameters_2_1 =
-    ::android::hardware::bluetooth::audio::V2_1::PcmParameters;
-using SampleRate_2_1 = ::android::hardware::bluetooth::audio::V2_1::SampleRate;
-
-using SessionType_2_1 =
-    ::android::hardware::bluetooth::audio::V2_1::SessionType;
-using SessionType_2_0 =
-    ::android::hardware::bluetooth::audio::V2_0::SessionType;
-
-using AudioConfiguration_2_1 =
-    ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration;
-
-static constexpr PcmParameters_2_1 kInvalidPcmParameters = {
-    .sampleRate = SampleRate_2_1::RATE_UNKNOWN,
-    .channelMode = ChannelMode::UNKNOWN,
-    .bitsPerSample = BitsPerSample::BITS_UNKNOWN,
-    .dataIntervalUs = 0,
-};
-
-static LeAudioConfiguration kInvalidLeAudioConfig = {
-    .mode = LeAudioMode::UNKNOWN,
-    .config = {},
-};
-
-::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-    BluetoothAudioSession_2_2::invalidSoftwareAudioConfiguration = {};
-::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-    BluetoothAudioSession_2_2::invalidOffloadAudioConfiguration = {};
-::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-    BluetoothAudioSession_2_2::invalidLeOffloadAudioConfiguration = {};
-
-using IBluetoothAudioPort_2_2 =
-    ::android::hardware::bluetooth::audio::V2_2::IBluetoothAudioPort;
-
-namespace {
-bool is_2_0_session_type(
-    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-        session_type) {
-  if (session_type == SessionType_2_1::A2DP_SOFTWARE_ENCODING_DATAPATH ||
-      session_type == SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH ||
-      session_type == SessionType_2_1::HEARING_AID_SOFTWARE_ENCODING_DATAPATH) {
-    return true;
-  } else {
-    return false;
-  }
-}
-}  // namespace
-
-BluetoothAudioSession_2_2::BluetoothAudioSession_2_2(
-    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-        session_type)
-    : audio_session(BluetoothAudioSessionInstance::GetSessionInstance(
-          static_cast<SessionType_2_0>(session_type))),
-      audio_session_2_1(
-          BluetoothAudioSessionInstance_2_1::GetSessionInstance(session_type)) {
-  if (is_2_0_session_type(session_type)) {
-    session_type_2_1_ = (SessionType_2_1::UNKNOWN);
-  } else {
-    session_type_2_1_ = (session_type);
-  }
-  raw_session_type_ = session_type;
-  invalidSoftwareAudioConfiguration.pcmConfig(kInvalidPcmParameters);
-  invalidOffloadAudioConfiguration.codecConfig(
-      audio_session->kInvalidCodecConfiguration);
-  invalidLeOffloadAudioConfiguration.leAudioConfig(kInvalidLeAudioConfig);
-}
-
-bool BluetoothAudioSession_2_2::IsSessionReady() {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::IsSessionReady(raw_session_type_);
-  if (session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    return audio_session->IsSessionReady();
-  }
-
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  return audio_session->stack_iface_ != nullptr;
-}
-
-std::shared_ptr<BluetoothAudioSession>
-BluetoothAudioSession_2_2::GetAudioSession() {
-  return audio_session;
-}
-std::shared_ptr<BluetoothAudioSession_2_1>
-BluetoothAudioSession_2_2::GetAudioSession_2_1() {
-  return audio_session_2_1;
-}
-
-void BluetoothAudioSession_2_2::UpdateTracksMetadata(
-    const struct source_metadata* source_metadata) {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::UpdateTracksMetadata(raw_session_type_,
-                                                          source_metadata);
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (!IsSessionReady()) {
-    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-               << " has NO session";
-    return;
-  }
-
-  ssize_t track_count = source_metadata->track_count;
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-            << ", " << track_count << " track(s)";
-
-  if (session_type_2_1_ == SessionType_2_1::UNKNOWN) {
-    audio_session->UpdateTracksMetadata(source_metadata);
-    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_2_1_)
-                 << ", usage=" << toString(halMetadata->usage)
-                 << ", content=" << toString(halMetadata->contentType)
-                 << ", gain=" << halMetadata->gain;
-    --track_count;
-    ++track;
-    ++halMetadata;
-  }
-  auto hal_retval = audio_session->stack_iface_->updateMetadata(sourceMetadata);
-  if (!hal_retval.isOk()) {
-    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
-                 << toString(session_type_2_1_) << " failed";
-  }
-}
-
-void BluetoothAudioSession_2_2::UpdateSinkMetadata(
-    const struct sink_metadata* sink_metadata) {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::UpdateSinkMetadata(raw_session_type_,
-                                                        sink_metadata);
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (!IsSessionReady()) {
-    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-               << " has NO session";
-    return;
-  }
-
-  ssize_t track_count = sink_metadata->track_count;
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-            << ", " << track_count << " track(s)";
-  if (session_type_2_1_ == SessionType_2_1::A2DP_SOFTWARE_ENCODING_DATAPATH ||
-      session_type_2_1_ == SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
-    return;
-  }
-
-  struct record_track_metadata* track = sink_metadata->tracks;
-  SinkMetadata sinkMetadata;
-  RecordTrackMetadata* halMetadata;
-
-  sinkMetadata.tracks.resize(track_count);
-  halMetadata = sinkMetadata.tracks.data();
-  while (track_count && track) {
-    halMetadata->source = static_cast<AudioSource>(track->source);
-    halMetadata->gain = track->gain;
-    // halMetadata->destination leave unspecified
-    LOG(INFO) << __func__
-              << " - SessionType=" << toString(GetAudioSession()->session_type_)
-              << ", source=" << track->source
-              << ", dest_device=" << track->dest_device
-              << ", gain=" << track->gain
-              << ", dest_device_address=" << track->dest_device_address;
-    --track_count;
-    ++track;
-    ++halMetadata;
-  }
-
-  /* This is called just for 2.2 sessions, so it's safe to do this casting*/
-  IBluetoothAudioPort_2_2* stack_iface_2_2_ =
-      static_cast<IBluetoothAudioPort_2_2*>(audio_session->stack_iface_.get());
-  auto hal_retval = stack_iface_2_2_->updateSinkMetadata(sinkMetadata);
-  if (!hal_retval.isOk()) {
-    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
-                 << toString(session_type_2_1_) << " failed";
-  }
-}
-
-// The control function is for the bluetooth_audio module to get the current
-// AudioConfiguration
-const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-BluetoothAudioSession_2_2::GetAudioConfig() {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::GetAudioConfig(raw_session_type_);
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (IsSessionReady()) {
-    auto audio_config_discriminator = audio_config_2_2_.getDiscriminator();
-    // If session is unknown it means it should be 2.0 type
-    if (session_type_2_1_ != SessionType_2_1::UNKNOWN) {
-      if ((audio_config_discriminator ==
-               ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
-                   hidl_discriminator::pcmConfig &&
-           audio_config_2_2_ != kInvalidSoftwareAudioConfiguration) ||
-          (audio_config_discriminator ==
-               ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
-                   hidl_discriminator::leAudioConfig &&
-           audio_config_2_2_ != kInvalidLeOffloadAudioConfiguration))
-        return audio_config_2_2_;
-
-      ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration toConf;
-      const AudioConfiguration_2_1 fromConf =
-          GetAudioSession_2_1()->GetAudioConfig();
-      if (fromConf.getDiscriminator() ==
-          AudioConfiguration_2_1::hidl_discriminator::pcmConfig) {
-        toConf.pcmConfig(fromConf.pcmConfig());
-        return toConf;
-      }
-    }
-
-    ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration toConf;
-    const AudioConfiguration fromConf = GetAudioSession()->GetAudioConfig();
-    // pcmConfig only differs between 2.0 and 2.1 in AudioConfiguration
-    if (fromConf.getDiscriminator() ==
-        AudioConfiguration::hidl_discriminator::codecConfig) {
-      toConf.codecConfig(fromConf.codecConfig());
-    } else {
-      toConf.pcmConfig() = {
-          .sampleRate = static_cast<
-              ::android::hardware::bluetooth::audio::V2_1::SampleRate>(
-              fromConf.pcmConfig().sampleRate),
-          .channelMode = fromConf.pcmConfig().channelMode,
-          .bitsPerSample = fromConf.pcmConfig().bitsPerSample,
-          .dataIntervalUs = 0};
-    }
-    return toConf;
-  } else if (session_type_2_1_ ==
-                 SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-             session_type_2_1_ ==
-                 SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    return kInvalidLeOffloadAudioConfiguration;
-  } 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_2_2::StartStream() {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::StartStream(raw_session_type_);
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (!IsSessionReady()) {
-    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-               << " has NO session";
-    return false;
-  }
-  auto hal_retval = audio_session->stack_iface_->startStream();
-  if (!hal_retval.isOk()) {
-    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
-                 << toString(session_type_2_1_) << " failed";
-    return false;
-  }
-  return true;
-}
-
-bool BluetoothAudioSession_2_2::SuspendStream() {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::SuspendStream(raw_session_type_);
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (!IsSessionReady()) {
-    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-               << " has NO session";
-    return false;
-  }
-  auto hal_retval = audio_session->stack_iface_->suspendStream();
-  if (!hal_retval.isOk()) {
-    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
-                 << toString(session_type_2_1_) << " failed";
-    return false;
-  }
-  return true;
-}
-
-void BluetoothAudioSession_2_2::StopStream() {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::StopStream(raw_session_type_);
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (!IsSessionReady()) {
-    return;
-  }
-  auto hal_retval = audio_session->stack_iface_->stopStream();
-  if (!hal_retval.isOk()) {
-    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
-                 << toString(session_type_2_1_) << " failed";
-  }
-}
-
-bool BluetoothAudioSession_2_2::UpdateAudioConfig(
-    const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
-        audio_config) {
-  bool is_software_session =
-      (session_type_2_1_ == SessionType_2_1::A2DP_SOFTWARE_ENCODING_DATAPATH ||
-       session_type_2_1_ ==
-           SessionType_2_1::HEARING_AID_SOFTWARE_ENCODING_DATAPATH ||
-       session_type_2_1_ ==
-           SessionType_2_1::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH ||
-       session_type_2_1_ ==
-           SessionType_2_1::LE_AUDIO_SOFTWARE_DECODED_DATAPATH);
-  bool is_offload_a2dp_session =
-      (session_type_2_1_ == SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH);
-  bool is_offload_le_audio_session =
-      (session_type_2_1_ ==
-           SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-       session_type_2_1_ ==
-           SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH);
-  auto audio_config_discriminator = audio_config.getDiscriminator();
-  bool is_software_audio_config =
-      (is_software_session &&
-       audio_config_discriminator ==
-           ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
-               hidl_discriminator::pcmConfig);
-  bool is_a2dp_offload_audio_config =
-      (is_offload_a2dp_session &&
-       audio_config_discriminator ==
-           ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
-               hidl_discriminator::codecConfig);
-  bool is_le_audio_offload_audio_config =
-      (is_offload_le_audio_session &&
-       audio_config_discriminator ==
-           ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
-               hidl_discriminator::leAudioConfig);
-  if (!is_software_audio_config && !is_a2dp_offload_audio_config &&
-      !is_le_audio_offload_audio_config) {
-    return false;
-  }
-  audio_config_2_2_ = audio_config;
-  return true;
-}
-
-// 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_2_2::OnSessionStarted(
-    const sp<IBluetoothAudioPort> stack_iface, const DataMQ::Descriptor* dataMQ,
-    const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
-        audio_config) {
-  if (session_type_2_1_ == SessionType_2_1::UNKNOWN) {
-    ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration config;
-    if (audio_config.getDiscriminator() ==
-        ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
-            hidl_discriminator::codecConfig) {
-      config.codecConfig(audio_config.codecConfig());
-    } else {
-      auto& tmpPcm = audio_config.pcmConfig();
-      config.pcmConfig(
-          ::android::hardware::bluetooth::audio::V2_0::PcmParameters{
-              .sampleRate = static_cast<SampleRate>(tmpPcm.sampleRate),
-              .channelMode = tmpPcm.channelMode,
-              .bitsPerSample = tmpPcm.bitsPerSample
-              /*dataIntervalUs is not passed to 2.0 */
-          });
-    }
-
-    audio_session->OnSessionStarted(stack_iface, dataMQ, config);
-  } else {
-    std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-    if (stack_iface == nullptr) {
-      LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-                 << ", IBluetoothAudioPort Invalid";
-    } else if (!UpdateAudioConfig(audio_config)) {
-      LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-                 << ", AudioConfiguration=" << toString(audio_config)
-                 << " Invalid";
-    } else if (!audio_session->UpdateDataPath(dataMQ)) {
-      LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-                 << " DataMQ Invalid";
-      audio_config_2_2_ =
-          ((session_type_2_1_ ==
-                SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-            session_type_2_1_ ==
-                SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH)
-               ? kInvalidLeOffloadAudioConfiguration
-               : kInvalidSoftwareAudioConfiguration);
-    } else {
-      audio_session->stack_iface_ = stack_iface;
-      LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-                << ", 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_2_2::OnSessionEnded() {
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  bool toggled = IsSessionReady();
-  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_);
-  if (session_type_2_1_ == SessionType_2_1::UNKNOWN) {
-    audio_session->OnSessionEnded();
-    return;
-  }
-
-  audio_config_2_2_ =
-      ((session_type_2_1_ ==
-            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
-        session_type_2_1_ ==
-            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH)
-           ? kInvalidLeOffloadAudioConfiguration
-           : kInvalidSoftwareAudioConfiguration);
-  audio_session->stack_iface_ = nullptr;
-  audio_session->UpdateDataPath(nullptr);
-  if (toggled) {
-    ReportSessionStatus();
-  }
-}
-
-// The control function helps the bluetooth_audio module to register
-// PortStatusCallbacks_2_2
-// @return: cookie - the assigned number to this bluetooth_audio output
-uint16_t BluetoothAudioSession_2_2::RegisterStatusCback(
-    const PortStatusCallbacks_2_2& cbacks) {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::RegisterControlResultCback(
-        raw_session_type_, cbacks);
-  if (session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    PortStatusCallbacks cb = {
-        .control_result_cb_ = cbacks.control_result_cb_,
-        .session_changed_cb_ = cbacks.session_changed_cb_};
-    return audio_session->RegisterStatusCback(cb);
-  }
-
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  uint16_t cookie = ObserversCookieGetInitValue(session_type_2_1_);
-  uint16_t cookie_upper_bound = ObserversCookieGetUpperBound(session_type_2_1_);
-
-  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_2_1_)
-               << " has " << observers_.size()
-               << " observers already (No Resource)";
-    return kObserversCookieUndefined;
-  }
-  std::shared_ptr<struct PortStatusCallbacks_2_2> cb =
-      std::make_shared<struct PortStatusCallbacks_2_2>();
-  *cb = cbacks;
-  observers_[cookie] = cb;
-  return cookie;
-}
-
-// The control function helps the bluetooth_audio module to unregister
-// PortStatusCallbacks_2_2
-// @param: cookie - indicates which bluetooth_audio output is
-void BluetoothAudioSession_2_2::UnregisterStatusCback(uint16_t cookie) {
-  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
-    return HidlToAidlMiddleware_2_2::UnregisterControlResultCback(
-        raw_session_type_, cookie);
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    audio_session->UnregisterStatusCback(cookie);
-    return;
-  }
-  if (observers_.erase(cookie) != 1) {
-    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-                 << " no such provider=0x"
-                 << android::base::StringPrintf("%04x", cookie);
-  }
-}
-
-// invoking the registered session_changed_cb_
-void BluetoothAudioSession_2_2::ReportSessionStatus() {
-  // This is locked already by OnSessionStarted / OnSessionEnded
-  if (session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    audio_session->ReportSessionStatus();
-    return;
-  }
-  if (observers_.empty()) {
-    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-              << " has NO port state observer";
-    return;
-  }
-  for (auto& observer : observers_) {
-    uint16_t cookie = observer.first;
-    std::shared_ptr<struct PortStatusCallbacks_2_2> cb = observer.second;
-    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-              << " 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_2_2::ReportControlStatus(
-    bool start_resp, const BluetoothAudioStatus& status) {
-  if (session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    audio_session->ReportControlStatus(start_resp, status);
-    return;
-  }
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  if (observers_.empty()) {
-    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-                 << " has NO port state observer";
-    return;
-  }
-  for (auto& observer : observers_) {
-    uint16_t cookie = observer.first;
-    std::shared_ptr<struct PortStatusCallbacks_2_2> cb = observer.second;
-    LOG(INFO) << __func__ << " - status=" << toString(status)
-              << " for SessionType=" << toString(session_type_2_1_)
-              << ", bluetooth_audio=0x"
-              << android::base::StringPrintf("%04x", cookie)
-              << (start_resp ? " started" : " suspended");
-    cb->control_result_cb_(cookie, start_resp, status);
-  }
-}
-
-// 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_2_2::ReportAudioConfigChanged(
-    const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
-        audio_config) {
-  if (session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type_2_1_ !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    return;
-  }
-  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
-  audio_config_2_2_ = audio_config;
-  if (observers_.empty()) {
-    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_2_1_)
-                 << " has NO port state observer";
-    return;
-  }
-  for (auto& observer : observers_) {
-    uint16_t cookie = observer.first;
-    std::shared_ptr<struct PortStatusCallbacks_2_2> cb = observer.second;
-    LOG(INFO) << __func__ << " for SessionType=" << toString(session_type_2_1_)
-              << ", bluetooth_audio=0x"
-              << android::base::StringPrintf("%04x", cookie);
-    if (cb->audio_configuration_changed_cb_ != nullptr) {
-      cb->audio_configuration_changed_cb_(cookie);
-    }
-  }
-}
-
-std::unique_ptr<BluetoothAudioSessionInstance_2_2>
-    BluetoothAudioSessionInstance_2_2::instance_ptr =
-        std::unique_ptr<BluetoothAudioSessionInstance_2_2>(
-            new BluetoothAudioSessionInstance_2_2());
-
-// API to fetch the session of A2DP / Hearing Aid
-std::shared_ptr<BluetoothAudioSession_2_2>
-BluetoothAudioSessionInstance_2_2::GetSessionInstance(
-    const SessionType_2_1& 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_2_2> session_ptr =
-      std::make_shared<BluetoothAudioSession_2_2>(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_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.h
deleted file mode 100644
index e04ad80ffa..0000000000
--- a/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.h
+++ /dev/null
@@ -1,186 +0,0 @@
-/*
- * 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/2.2/types.h>
-
-#include <mutex>
-#include <unordered_map>
-
-#include "BluetoothAudioSession.h"
-#include "BluetoothAudioSession_2_1.h"
-
-namespace android {
-namespace bluetooth {
-namespace audio {
-
-inline uint16_t ObserversCookieGetInitValue(
-    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-        session_type) {
-  return (static_cast<uint16_t>(session_type) << 8 & 0xff00);
-}
-inline uint16_t ObserversCookieGetUpperBound(
-    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-        session_type) {
-  return (static_cast<uint16_t>(session_type) << 8 & 0xff00) +
-         kObserversCookieSize;
-}
-
-struct PortStatusCallbacks_2_2 {
-  // 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_;
-  // audio_configuration_changed_cb_ - when the Bluetooth stack change the audio
-  // configuration, 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)> audio_configuration_changed_cb_;
-};
-
-class BluetoothAudioSession_2_2 {
- private:
-  std::shared_ptr<BluetoothAudioSession> audio_session;
-  std::shared_ptr<BluetoothAudioSession_2_1> audio_session_2_1;
-
-  ::android::hardware::bluetooth::audio::V2_1::SessionType session_type_2_1_;
-  ::android::hardware::bluetooth::audio::V2_1::SessionType raw_session_type_;
-
-  // audio data configuration for both software and offloading
-  ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-      audio_config_2_2_;
-
-  bool UpdateAudioConfig(
-      const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
-          audio_config);
-
-  static ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-      invalidSoftwareAudioConfiguration;
-  static ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-      invalidOffloadAudioConfiguration;
-  static ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-      invalidLeOffloadAudioConfiguration;
-
-  // saving those registered bluetooth_audio's callbacks
-  std::unordered_map<uint16_t, std::shared_ptr<struct PortStatusCallbacks_2_2>>
-      observers_;
-
-  // invoking the registered session_changed_cb_
-  void ReportSessionStatus();
-
- public:
-  BluetoothAudioSession_2_2(
-      const ::android::hardware::bluetooth::audio::V2_1::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();
-
-  std::shared_ptr<BluetoothAudioSession> GetAudioSession();
-  std::shared_ptr<BluetoothAudioSession_2_1> GetAudioSession_2_1();
-
-  // 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 ::android::hardware::bluetooth::audio::V2_2::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();
-
-  // 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();
-
-  // The control function helps the bluetooth_audio module to register
-  // PortStatusCallbacks_2_2
-  // @return: cookie - the assigned number to this bluetooth_audio output
-  uint16_t RegisterStatusCback(const PortStatusCallbacks_2_2& cbacks);
-
-  // The control function helps the bluetooth_audio module to unregister
-  // PortStatusCallbacks_2_2
-  // @param: cookie - indicates which bluetooth_audio output is
-  void UnregisterStatusCback(uint16_t 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 ReportControlStatus(bool start_resp, const BluetoothAudioStatus& status);
-
-  // The report function is used to report that the Bluetooth stack has notified
-  // the audio configuration changed, and will invoke
-  // audio_configuration_changed_cb_ to notify registered bluetooth_audio
-  // outputs
-  void ReportAudioConfigChanged(
-      const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
-          audio_config);
-
-  // The control function is for the bluetooth_audio module to get the current
-  // AudioConfiguration
-  const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
-  GetAudioConfig();
-
-  void UpdateTracksMetadata(const struct source_metadata* source_metadata);
-  void UpdateSinkMetadata(const struct sink_metadata* sink_metadata);
-
-  static constexpr ::android::hardware::bluetooth::audio::V2_2::
-      AudioConfiguration& kInvalidSoftwareAudioConfiguration =
-          invalidSoftwareAudioConfiguration;
-  static constexpr ::android::hardware::bluetooth::audio::V2_2::
-      AudioConfiguration& kInvalidOffloadAudioConfiguration =
-          invalidOffloadAudioConfiguration;
-  static constexpr ::android::hardware::bluetooth::audio::V2_2::
-      AudioConfiguration& kInvalidLeOffloadAudioConfiguration =
-          invalidLeOffloadAudioConfiguration;
-};
-
-class BluetoothAudioSessionInstance_2_2 {
- public:
-  // The API is to fetch the specified session of A2DP / Hearing Aid
-  static std::shared_ptr<BluetoothAudioSession_2_2> GetSessionInstance(
-      const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-          session_type);
-
- private:
-  static std::unique_ptr<BluetoothAudioSessionInstance_2_2> instance_ptr;
-  std::mutex mutex_;
-  std::unordered_map<::android::hardware::bluetooth::audio::V2_1::SessionType,
-                     std::shared_ptr<BluetoothAudioSession_2_2>>
-      sessions_map_;
-};
-
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.cpp b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.cpp
deleted file mode 100644
index decff7046f..0000000000
--- a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.cpp
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * Copyright 2021 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_2_2"
-
-#include "BluetoothAudioSupportedCodecsDB_2_2.h"
-
-#include <android-base/logging.h>
-
-namespace android {
-namespace bluetooth {
-namespace audio {
-
-using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
-using ::android::hardware::bluetooth::audio::V2_1::CodecType;
-using ::android::hardware::bluetooth::audio::V2_1::Lc3FrameDuration;
-using ::android::hardware::bluetooth::audio::V2_1::Lc3Parameters;
-using ::android::hardware::bluetooth::audio::V2_1::SampleRate;
-using ::android::hardware::bluetooth::audio::V2_2::AudioLocation;
-using ::android::hardware::bluetooth::audio::V2_2::BroadcastCapability;
-using ::android::hardware::bluetooth::audio::V2_2::
-    LeAudioCodecCapabilitiesSetting;
-using ::android::hardware::bluetooth::audio::V2_2::UnicastCapability;
-using SessionType_2_1 =
-    ::android::hardware::bluetooth::audio::V2_1::SessionType;
-
-// Stores the list of offload supported capability
-std::vector<LeAudioCodecCapabilitiesSetting> kDefaultOffloadLeAudioCapabilities;
-
-static const UnicastCapability kInvalidUnicastCapability = {
-    .codecType = CodecType::UNKNOWN};
-
-static const BroadcastCapability kInvalidBroadcastCapability = {
-    .codecType = CodecType::UNKNOWN};
-
-// Default Supported Codecs
-// LC3 16_1: sample rate: 16 kHz, frame duration: 7.5 ms, octets per frame: 30
-static const Lc3Parameters kLc3Capability_16_1 = {
-    .samplingFrequency = SampleRate::RATE_16000,
-    .frameDuration = Lc3FrameDuration::DURATION_7500US,
-    .octetsPerFrame = 30};
-
-// Default Supported Codecs
-// LC3 16_2: sample rate: 16 kHz, frame duration: 10 ms, octets per frame: 40
-static const Lc3Parameters kLc3Capability_16_2 = {
-    .samplingFrequency = SampleRate::RATE_16000,
-    .frameDuration = Lc3FrameDuration::DURATION_10000US,
-    .octetsPerFrame = 40};
-
-// Default Supported Codecs
-// LC3 48_4: sample rate: 48 kHz, frame duration: 10 ms, octets per frame: 120
-static const Lc3Parameters kLc3Capability_48_4 = {
-    .samplingFrequency = SampleRate::RATE_48000,
-    .frameDuration = Lc3FrameDuration::DURATION_10000US,
-    .octetsPerFrame = 120};
-
-static const std::vector<Lc3Parameters> supportedLc3CapabilityList = {
-    kLc3Capability_48_4, kLc3Capability_16_2, kLc3Capability_16_1};
-
-static AudioLocation stereoAudio = static_cast<AudioLocation>(
-    AudioLocation::FRONT_LEFT | AudioLocation::FRONT_RIGHT);
-static AudioLocation monoAudio = AudioLocation::UNKNOWN;
-
-// Stores the supported setting of audio location, connected device, and the
-// channel count for each device
-std::vector<std::tuple<AudioLocation, uint8_t, uint8_t>>
-    supportedDeviceSetting = {
-        // Stereo, two connected device, one for L one for R
-        std::make_tuple(stereoAudio, 2, 1),
-        // Stereo, one connected device for both L and R
-        std::make_tuple(stereoAudio, 1, 2),
-        // Mono
-        std::make_tuple(monoAudio, 1, 1)};
-
-bool IsOffloadLeAudioConfigurationValid(
-    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-        session_type,
-    const ::android::hardware::bluetooth::audio::V2_2::LeAudioConfiguration&) {
-  if (session_type !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    return false;
-  }
-
-  // TODO: perform checks on le_audio_codec_config once we know supported
-  // parameters
-
-  return true;
-}
-
-UnicastCapability composeUnicastLc3Capability(AudioLocation audioLocation,
-                                              uint8_t deviceCnt,
-                                              uint8_t channelCount,
-                                              Lc3Parameters capability) {
-  return UnicastCapability{.codecType = CodecType::LC3,
-                           .supportedChannel = audioLocation,
-                           .deviceCount = deviceCnt,
-                           .channelCountPerDevice = channelCount,
-                           .capabilities = capability};
-}
-
-std::vector<LeAudioCodecCapabilitiesSetting> GetLeAudioOffloadCodecCapabilities(
-    const SessionType_2_1& session_type) {
-  if (session_type !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
-      session_type !=
-          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
-    return std::vector<LeAudioCodecCapabilitiesSetting>(0);
-  }
-
-  if (kDefaultOffloadLeAudioCapabilities.empty()) {
-    for (auto [audioLocation, deviceCnt, channelCount] :
-         supportedDeviceSetting) {
-      for (auto capability : supportedLc3CapabilityList) {
-        UnicastCapability lc3Capability = composeUnicastLc3Capability(
-            audioLocation, deviceCnt, channelCount, capability);
-        UnicastCapability lc3MonoDecodeCapability =
-            composeUnicastLc3Capability(monoAudio, 1, 1, capability);
-
-        // Adds the capability for encode only
-        kDefaultOffloadLeAudioCapabilities.push_back(
-            {.unicastEncodeCapability = lc3Capability,
-             .unicastDecodeCapability = kInvalidUnicastCapability,
-             .broadcastCapability = kInvalidBroadcastCapability});
-
-        // Adds the capability for decode only
-        kDefaultOffloadLeAudioCapabilities.push_back(
-            {.unicastEncodeCapability = kInvalidUnicastCapability,
-             .unicastDecodeCapability = lc3Capability,
-             .broadcastCapability = kInvalidBroadcastCapability});
-
-        // Adds the capability for the case that encode and decode exist at the
-        // same time
-        kDefaultOffloadLeAudioCapabilities.push_back(
-            {.unicastEncodeCapability = lc3Capability,
-             .unicastDecodeCapability = lc3MonoDecodeCapability,
-             .broadcastCapability = kInvalidBroadcastCapability});
-      }
-    }
-  }
-
-  return kDefaultOffloadLeAudioCapabilities;
-}
-
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.h
deleted file mode 100644
index 34bba5f671..0000000000
--- a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2021 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/2.2/types.h>
-
-#include "BluetoothAudioSupportedCodecsDB.h"
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
-
-namespace android {
-namespace bluetooth {
-namespace audio {
-
-bool IsOffloadLeAudioConfigurationValid(
-    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-        session_type,
-    const ::android::hardware::bluetooth::audio::V2_2::LeAudioConfiguration&
-        le_audio_codec_config);
-
-std::vector<hardware::bluetooth::audio::V2_2::LeAudioCodecCapabilitiesSetting>
-GetLeAudioOffloadCodecCapabilities(
-    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
-        session_type);
-}  // namespace audio
-}  // namespace bluetooth
-}  // namespace android