Add Bluetooth Audio default AIDL implementation

Test: manual
Bug: 203490261
Change-Id: I39224ecdd18b9eb0626d6188442a33ef65820673
diff --git a/bluetooth/audio/aidl/default/BluetoothAudioProvider.h b/bluetooth/audio/aidl/default/BluetoothAudioProvider.h
new file mode 100644
index 0000000..f7acbdf
--- /dev/null
+++ b/bluetooth/audio/aidl/default/BluetoothAudioProvider.h
@@ -0,0 +1,67 @@
+/*
+ * 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.
+ */
+#pragma once
+
+#include <aidl/android/hardware/bluetooth/audio/BnBluetoothAudioProvider.h>
+#include <aidl/android/hardware/bluetooth/audio/SessionType.h>
+#include <fmq/AidlMessageQueue.h>
+
+using ::aidl::android::hardware::common::fmq::MQDescriptor;
+using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::android::AidlMessageQueue;
+
+using MqDataType = int8_t;
+using MqDataMode = SynchronizedReadWrite;
+using DataMQ = AidlMessageQueue<MqDataType, MqDataMode>;
+using DataMQDesc = MQDescriptor<MqDataType, MqDataMode>;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioProvider : public BnBluetoothAudioProvider {
+ public:
+  BluetoothAudioProvider();
+
+  ndk::ScopedAStatus startSession(
+      const std::shared_ptr<IBluetoothAudioPort>& host_if,
+      const AudioConfiguration& audio_config, DataMQDesc* _aidl_return);
+  ndk::ScopedAStatus endSession();
+  ndk::ScopedAStatus streamStarted(BluetoothAudioStatus status);
+  ndk::ScopedAStatus streamSuspended(BluetoothAudioStatus status);
+  ndk::ScopedAStatus updateAudioConfiguration(
+      const AudioConfiguration& audio_config);
+
+  virtual bool isValid(const SessionType& sessionType) = 0;
+
+ protected:
+  virtual ndk::ScopedAStatus onSessionReady(DataMQDesc* _aidl_return) = 0;
+  static void binderDiedCallbackAidl(void* cookie_ptr);
+
+  ::ndk::ScopedAIBinder_DeathRecipient death_recipient_;
+
+  std::shared_ptr<IBluetoothAudioPort> stack_iface_;
+  std::unique_ptr<AudioConfiguration> audio_config_ = nullptr;
+  SessionType session_type_;
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
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