diff --git a/media/libaaudio/src/Android.bp b/media/libaaudio/src/Android.bp
index 717f31a..92e04b0 100644
--- a/media/libaaudio/src/Android.bp
+++ b/media/libaaudio/src/Android.bp
@@ -85,6 +85,7 @@
         "libcutils",
         "libutils",
         "libbinder",
+        "aaudio-aidl-cpp",
     ],
 
     cflags: [
@@ -117,7 +118,6 @@
         "binding/AAudioBinderClient.cpp",
         "binding/AAudioStreamRequest.cpp",
         "binding/AAudioStreamConfiguration.cpp",
-        "binding/IAAudioClient.cpp",
         "binding/IAAudioService.cpp",
         "binding/RingBufferParcelable.cpp",
         "binding/SharedMemoryParcelable.cpp",
@@ -138,3 +138,12 @@
         misc_undefined: ["bounds"],
     },
 }
+
+aidl_interface {
+    name: "aaudio-aidl",
+    unstable: true,
+    local_include_dir: "binding/aidl",
+    srcs: [
+        "binding/aidl/aaudio/IAAudioClient.aidl",
+    ],
+}
diff --git a/media/libaaudio/src/binding/AAudioBinderClient.h b/media/libaaudio/src/binding/AAudioBinderClient.h
index e8c91fc..a9a621e 100644
--- a/media/libaaudio/src/binding/AAudioBinderClient.h
+++ b/media/libaaudio/src/binding/AAudioBinderClient.h
@@ -21,6 +21,7 @@
 #include <utils/Singleton.h>
 
 #include <aaudio/AAudio.h>
+#include "aaudio/BnAAudioClient.h"
 #include "AAudioServiceDefinitions.h"
 #include "AAudioServiceInterface.h"
 #include "binding/AAudioStreamRequest.h"
@@ -48,7 +49,7 @@
 
     void dropAAudioService();
 
-    void registerClient(const android::sp<android::IAAudioClient>& client __unused) override {}
+    void registerClient(const android::sp<IAAudioClient>& client __unused) override {}
 
     /**
      * @param request info needed to create the stream
@@ -115,7 +116,7 @@
         ALOGW("onStreamChange called!");
     }
 
-    class AAudioClient : public android::IBinder::DeathRecipient , public android::BnAAudioClient
+    class AAudioClient : public android::IBinder::DeathRecipient , public BnAAudioClient
     {
     public:
         AAudioClient(android::wp<AAudioBinderClient> aaudioBinderClient)
@@ -132,11 +133,13 @@
         }
 
         // implement BnAAudioClient
-        void onStreamChange(aaudio_handle_t handle, int32_t opcode, int32_t value) {
+        android::binder::Status onStreamChange(int32_t handle, int32_t opcode, int32_t value) {
+            static_assert(std::is_same_v<aaudio_handle_t, int32_t>);
             android::sp<AAudioBinderClient> client = mBinderClient.promote();
             if (client.get() != nullptr) {
                 client->onStreamChange(handle, opcode, value);
             }
+            return android::binder::Status::ok();
         }
     private:
         android::wp<AAudioBinderClient> mBinderClient;
diff --git a/media/libaaudio/src/binding/AAudioServiceInterface.h b/media/libaaudio/src/binding/AAudioServiceInterface.h
index 9c28cc7..5d11512 100644
--- a/media/libaaudio/src/binding/AAudioServiceInterface.h
+++ b/media/libaaudio/src/binding/AAudioServiceInterface.h
@@ -20,11 +20,11 @@
 #include <utils/StrongPointer.h>
 #include <media/AudioClient.h>
 
+#include "aaudio/IAAudioClient.h"
 #include "binding/AAudioServiceDefinitions.h"
 #include "binding/AAudioStreamRequest.h"
 #include "binding/AAudioStreamConfiguration.h"
 #include "binding/AudioEndpointParcelable.h"
-#include "binding/IAAudioClient.h"
 
 /**
  * This has the same methods as IAAudioService but without the Binder features.
@@ -40,7 +40,7 @@
     AAudioServiceInterface() {};
     virtual ~AAudioServiceInterface() = default;
 
-    virtual void registerClient(const android::sp<android::IAAudioClient>& client) = 0;
+    virtual void registerClient(const android::sp<IAAudioClient>& client) = 0;
 
     /**
      * @param request info needed to create the stream
diff --git a/media/libaaudio/src/binding/IAAudioClient.cpp b/media/libaaudio/src/binding/IAAudioClient.cpp
deleted file mode 100644
index c69c4e8..0000000
--- a/media/libaaudio/src/binding/IAAudioClient.cpp
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * Copyright (C) 2017 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 "AAudio"
-//#define LOG_NDEBUG 0
-#include <utils/Log.h>
-
-#include <aaudio/AAudio.h>
-
-#include "binding/AAudioBinderClient.h"
-#include "binding/AAudioServiceDefinitions.h"
-#include "binding/IAAudioClient.h"
-#include "utility/AAudioUtilities.h"
-
-namespace android {
-
-using aaudio::aaudio_handle_t;
-
-/**
- * This is used by the AAudio Service to talk to an AAudio Client.
- *
- * The order of parameters in the Parcels must match with code in AAudioClient.cpp.
- */
-class BpAAudioClient : public BpInterface<IAAudioClient>
-{
-public:
-    explicit BpAAudioClient(const sp<IBinder>& impl)
-        : BpInterface<IAAudioClient>(impl)
-    {
-    }
-
-    void onStreamChange(aaudio_handle_t handle, int32_t opcode, int32_t value) override {
-        Parcel data, reply;
-        data.writeInterfaceToken(IAAudioClient::getInterfaceDescriptor());
-        data.writeInt32(handle);
-        data.writeInt32(opcode);
-        data.writeInt32(value);
-        remote()->transact(ON_STREAM_CHANGE, data,  &reply, IBinder::FLAG_ONEWAY);
-    }
-
-};
-
-// Implement an interface to the service.
-IMPLEMENT_META_INTERFACE(AAudioClient, "IAAudioClient");
-
-// The order of parameters in the Parcels must match with code in BpAAudioClient
-
-status_t BnAAudioClient::onTransact(uint32_t code, const Parcel& data,
-                                        Parcel* reply, uint32_t flags) {
-    aaudio_handle_t streamHandle;
-    int32_t opcode = 0;
-    int32_t value = 0;
-    ALOGV("BnAAudioClient::onTransact(%u) %u", code, flags);
-
-    switch(code) {
-        case ON_STREAM_CHANGE: {
-            CHECK_INTERFACE(IAAudioClient, data, reply);
-            data.readInt32(&streamHandle);
-            data.readInt32(&opcode);
-            data.readInt32(&value);
-            onStreamChange(streamHandle, opcode, value);
-            ALOGD("BnAAudioClient onStreamChange(%x, %d, %d)", streamHandle, opcode, value);
-            return NO_ERROR;
-        } break;
-
-        default:
-            // ALOGW("BnAAudioClient::onTransact not handled %u", code);
-            return BBinder::onTransact(code, data, reply, flags);
-    }
-}
-
-} /* namespace android */
diff --git a/media/libaaudio/src/binding/IAAudioClient.h b/media/libaaudio/src/binding/IAAudioClient.h
deleted file mode 100644
index f21fd93..0000000
--- a/media/libaaudio/src/binding/IAAudioClient.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2017 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.
- */
-
-#ifndef ANDROID_AAUDIO_IAAUDIO_CLIENT_H
-#define ANDROID_AAUDIO_IAAUDIO_CLIENT_H
-
-#include <stdint.h>
-#include <binder/IInterface.h>
-
-#include <aaudio/AAudio.h>
-
-#include "binding/AAudioCommon.h"
-
-namespace android {
-
-
-// Interface (our AIDL) - client methods called by service
-class IAAudioClient : public IInterface {
-public:
-
-    DECLARE_META_INTERFACE(AAudioClient);
-
-    virtual void onStreamChange(aaudio::aaudio_handle_t handle, int32_t opcode, int32_t value) = 0;
-
-};
-
-class BnAAudioClient : public BnInterface<IAAudioClient> {
-public:
-    virtual status_t onTransact(uint32_t code, const Parcel& data,
-                                Parcel* reply, uint32_t flags = 0);
-};
-
-} /* namespace android */
-
-#endif //ANDROID_AAUDIO_IAAUDIO_SERVICE_H
diff --git a/media/libaaudio/src/binding/IAAudioService.cpp b/media/libaaudio/src/binding/IAAudioService.cpp
index e017b3a..13d5bf8 100644
--- a/media/libaaudio/src/binding/IAAudioService.cpp
+++ b/media/libaaudio/src/binding/IAAudioService.cpp
@@ -45,7 +45,7 @@
     {
     }
 
-    void registerClient(const sp<IAAudioClient>& client) override
+    void registerClient(const sp<aaudio::IAAudioClient>& client) override
     {
         Parcel data, reply;
         data.writeInterfaceToken(IAAudioService::getInterfaceDescriptor());
@@ -249,7 +249,7 @@
     switch(code) {
         case REGISTER_CLIENT: {
             CHECK_INTERFACE(IAAudioService, data, reply);
-            sp<IAAudioClient> client = interface_cast<IAAudioClient>(
+            sp<aaudio::IAAudioClient> client = interface_cast<aaudio::IAAudioClient>(
                     data.readStrongBinder());
             // readStrongBinder() can return null
             if (client.get() == nullptr) {
diff --git a/media/libaaudio/src/binding/IAAudioService.h b/media/libaaudio/src/binding/IAAudioService.h
index 6bdb826..2649691 100644
--- a/media/libaaudio/src/binding/IAAudioService.h
+++ b/media/libaaudio/src/binding/IAAudioService.h
@@ -24,12 +24,12 @@
 
 #include <aaudio/AAudio.h>
 
+#include "aaudio/IAAudioClient.h"
 #include "binding/AAudioCommon.h"
 #include "binding/AAudioServiceDefinitions.h"
 #include "binding/AAudioStreamConfiguration.h"
 #include "binding/AAudioStreamRequest.h"
 #include "binding/AudioEndpointParcelable.h"
-#include "binding/IAAudioClient.h"
 
 namespace android {
 
@@ -44,7 +44,7 @@
     // Register an object to receive audio input/output change and track notifications.
     // For a given calling pid, AAudio service disregards any registrations after the first.
     // Thus the IAAudioClient must be a singleton per process.
-    virtual void registerClient(const sp<IAAudioClient>& client) = 0;
+    virtual void registerClient(const sp<aaudio::IAAudioClient>& client) = 0;
 
     /**
      * @param request info needed to create the stream
diff --git a/media/libaaudio/src/binding/aidl/aaudio/IAAudioClient.aidl b/media/libaaudio/src/binding/aidl/aaudio/IAAudioClient.aidl
new file mode 100644
index 0000000..a010dbc
--- /dev/null
+++ b/media/libaaudio/src/binding/aidl/aaudio/IAAudioClient.aidl
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package aaudio;
+
+interface IAAudioClient {
+    oneway void onStreamChange(int handle, int opcode, int value);
+}