diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..87a8f41
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,27 @@
+aidl_interface {
+    name: "av-types-aidl",
+    unstable: true,
+    host_supported: true,
+    vendor_available: true,
+    double_loadable: true,
+    local_include_dir: "aidl",
+    srcs: [
+        "aidl/android/media/InterpolatorConfig.aidl",
+        "aidl/android/media/InterpolatorType.aidl",
+        "aidl/android/media/VolumeShaperConfiguration.aidl",
+        "aidl/android/media/VolumeShaperConfigurationOptionFlag.aidl",
+        "aidl/android/media/VolumeShaperConfigurationType.aidl",
+        "aidl/android/media/VolumeShaperOperation.aidl",
+        "aidl/android/media/VolumeShaperOperationFlag.aidl",
+        "aidl/android/media/VolumeShaperState.aidl",
+    ],
+    backend: {
+        cpp: {
+            min_sdk_version: "29",
+            apex_available: [
+                "//apex_available:platform",
+                "com.android.media",
+            ],
+        },
+    },
+}
diff --git a/aidl/android/media/InterpolatorConfig.aidl b/aidl/android/media/InterpolatorConfig.aidl
new file mode 100644
index 0000000..ef7486e
--- /dev/null
+++ b/aidl/android/media/InterpolatorConfig.aidl
@@ -0,0 +1,31 @@
+/*
+ * 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 android.media;
+
+import android.media.InterpolatorType;
+
+/**
+ * {@hide}
+ */
+parcelable InterpolatorConfig {
+    InterpolatorType type;
+    /** For cubic interpolation, the boundary conditions in slope. */
+    float firstSlope;
+    float lastSlope;
+    /** A flattened list of <x, y> pairs, monotonically increasing in x. */
+    float[] xy;
+}
diff --git a/aidl/android/media/InterpolatorType.aidl b/aidl/android/media/InterpolatorType.aidl
new file mode 100644
index 0000000..b722cad
--- /dev/null
+++ b/aidl/android/media/InterpolatorType.aidl
@@ -0,0 +1,34 @@
+/*
+ * 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 android.media;
+
+/**
+ * Polynomial spline interpolators.
+ *
+ * {@hide}
+ */
+@Backing(type="int")
+enum InterpolatorType {
+    /** Not continuous. */
+    STEP,
+    /** C0. */
+    LINEAR,
+    /** C1. */
+    CUBIC,
+    /** C1 (to provide locally monotonic curves). */
+    CUBIC_MONOTONIC,
+    // CUBIC_C2, // TODO - requires global computation / cache
+}
diff --git a/aidl/android/media/VolumeShaperConfiguration.aidl b/aidl/android/media/VolumeShaperConfiguration.aidl
new file mode 100644
index 0000000..6361851
--- /dev/null
+++ b/aidl/android/media/VolumeShaperConfiguration.aidl
@@ -0,0 +1,33 @@
+/*
+ * 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 android.media;
+
+import android.media.InterpolatorConfig;
+import android.media.VolumeShaperConfigurationOptionFlag;
+import android.media.VolumeShaperConfigurationType;
+
+/**
+ * {@hide}
+ */
+parcelable VolumeShaperConfiguration {
+    VolumeShaperConfigurationType type;
+    int id;
+    /** Bitmask, indexed by VolumeShaperConfigurationOptionFlag. */
+    int optionFlags;
+    double durationMs;
+    InterpolatorConfig interpolatorConfig;
+}
diff --git a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl b/aidl/android/media/VolumeShaperConfigurationOptionFlag.aidl
similarity index 75%
copy from media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
copy to aidl/android/media/VolumeShaperConfigurationOptionFlag.aidl
index f6a22b8..f583cee 100644
--- a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
+++ b/aidl/android/media/VolumeShaperConfigurationOptionFlag.aidl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * 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.
@@ -13,7 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package android.media;
 
-package android.media.VolumeShaper;
-
-parcelable State cpp_header "media/VolumeShaper.h";
+@Backing(type="int")
+enum VolumeShaperConfigurationOptionFlag {
+    VOLUME_IN_DBFS,
+    CLOCK_TIME,
+}
diff --git a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl b/aidl/android/media/VolumeShaperConfigurationType.aidl
similarity index 77%
rename from media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
rename to aidl/android/media/VolumeShaperConfigurationType.aidl
index f6a22b8..aa6334e 100644
--- a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
+++ b/aidl/android/media/VolumeShaperConfigurationType.aidl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * 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.
@@ -13,7 +13,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package android.media;
 
-package android.media.VolumeShaper;
-
-parcelable State cpp_header "media/VolumeShaper.h";
+@Backing(type="int")
+enum VolumeShaperConfigurationType {
+    ID,
+    SCALE,
+}
diff --git a/aidl/android/media/VolumeShaperOperation.aidl b/aidl/android/media/VolumeShaperOperation.aidl
new file mode 100644
index 0000000..dd9a0e7
--- /dev/null
+++ b/aidl/android/media/VolumeShaperOperation.aidl
@@ -0,0 +1,29 @@
+/*
+ * 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 android.media;
+
+/**
+ * {@hide}
+ */
+parcelable VolumeShaperOperation {
+    /** Operations to do. Bitmask of VolumeShaperOperationFlag. */
+    int flags;
+    /** If >= 0 the id to remove in a replace operation. */
+    int replaceId;
+    /** Position in the curve to set if a valid number (not nan). */
+    float xOffset;
+}
diff --git a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl b/aidl/android/media/VolumeShaperOperationFlag.aidl
similarity index 67%
copy from media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
copy to aidl/android/media/VolumeShaperOperationFlag.aidl
index f6a22b8..8fe5275 100644
--- a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
+++ b/aidl/android/media/VolumeShaperOperationFlag.aidl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * 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.
@@ -13,7 +13,14 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+package android.media;
 
-package android.media.VolumeShaper;
-
-parcelable State cpp_header "media/VolumeShaper.h";
+@Backing(type="int")
+enum VolumeShaperOperationFlag {
+    /** The absence of this flag indicates "play". */
+    REVERSE,
+    TERMINATE,
+    JOIN,
+    DELAY,
+    CREATE_IF_NECESSARY,
+}
diff --git a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl b/aidl/android/media/VolumeShaperState.aidl
similarity index 63%
copy from media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
copy to aidl/android/media/VolumeShaperState.aidl
index f6a22b8..4085e2b 100644
--- a/media/libaudioclient/aidl/android/media/VolumeShaper/State.aidl
+++ b/aidl/android/media/VolumeShaperState.aidl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017 The Android Open Source Project
+ * 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.
@@ -14,6 +14,14 @@
  * limitations under the License.
  */
 
-package android.media.VolumeShaper;
+package android.media;
 
-parcelable State cpp_header "media/VolumeShaper.h";
+/**
+ * {@hide}
+ */
+parcelable VolumeShaperState {
+    /** Linear volume in the range MIN_LINEAR_VOLUME to MAX_LINEAR_VOLUME. */
+    float volume;
+    /** Position on curve expressed from MIN_CURVE_TIME to MAX_CURVE_TIME. */
+    float xOffset;
+}
diff --git a/include/media/Interpolator.h b/include/media/Interpolator.h
index 703cf77..2004acb 100644
--- a/include/media/Interpolator.h
+++ b/include/media/Interpolator.h
@@ -21,6 +21,7 @@
 #include <sstream>
 #include <unordered_map>
 
+#include <android/media/InterpolatorConfig.h>
 #include <binder/Parcel.h>
 #include <utils/RefBase.h>
 
@@ -39,17 +40,10 @@
 class Interpolator : public std::map<S, T> {
 public:
     // Polynomial spline interpolators
-    // Extend only at the end of enum, as this must match order in VolumeShapers.java.
-    enum InterpolatorType : int32_t {
-        INTERPOLATOR_TYPE_STEP,   // Not continuous
-        INTERPOLATOR_TYPE_LINEAR, // C0
-        INTERPOLATOR_TYPE_CUBIC,  // C1
-        INTERPOLATOR_TYPE_CUBIC_MONOTONIC, // C1 (to provide locally monotonic curves)
-        // INTERPOLATOR_TYPE_CUBIC_C2, // TODO - requires global computation / cache
-    };
+    using InterpolatorType  = media::InterpolatorType;
 
     explicit Interpolator(
-            InterpolatorType interpolatorType = INTERPOLATOR_TYPE_LINEAR,
+            InterpolatorType interpolatorType = InterpolatorType::LINEAR,
             bool cache = true)
         : mCache(cache)
         , mFirstSlope(0)
@@ -82,13 +76,13 @@
 
         // now that we have two adjacent points:
         switch (mInterpolatorType) {
-        case INTERPOLATOR_TYPE_STEP:
+        case InterpolatorType::STEP:
             return high->first == x ? high->second : low->second;
-        case INTERPOLATOR_TYPE_LINEAR:
+        case InterpolatorType::LINEAR:
             return ((high->first - x) * low->second + (x - low->first) * high->second)
                     / (high->first - low->first);
-        case INTERPOLATOR_TYPE_CUBIC:
-        case INTERPOLATOR_TYPE_CUBIC_MONOTONIC:
+        case InterpolatorType::CUBIC:
+        case InterpolatorType::CUBIC_MONOTONIC:
         default: {
             // See https://en.wikipedia.org/wiki/Cubic_Hermite_spline
 
@@ -116,7 +110,7 @@
             // non catmullRom (finite difference) with regular cubic;
             // the choices here minimize computation.
             bool monotonic, catmullRom;
-            if (mInterpolatorType == INTERPOLATOR_TYPE_CUBIC_MONOTONIC) {
+            if (mInterpolatorType == InterpolatorType::CUBIC_MONOTONIC) {
                 monotonic = true;
                 catmullRom = false;
             } else {
@@ -202,11 +196,11 @@
 
     status_t setInterpolatorType(InterpolatorType interpolatorType) {
         switch (interpolatorType) {
-        case INTERPOLATOR_TYPE_STEP:   // Not continuous
-        case INTERPOLATOR_TYPE_LINEAR: // C0
-        case INTERPOLATOR_TYPE_CUBIC:  // C1
-        case INTERPOLATOR_TYPE_CUBIC_MONOTONIC: // C1 + other constraints
-        // case INTERPOLATOR_TYPE_CUBIC_C2:
+        case InterpolatorType::STEP:   // Not continuous
+        case InterpolatorType::LINEAR: // C0
+        case InterpolatorType::CUBIC:  // C1
+        case InterpolatorType::CUBIC_MONOTONIC: // C1 + other constraints
+        // case InterpolatorType::CUBIC_C2:
             mInterpolatorType = interpolatorType;
             return NO_ERROR;
         default:
@@ -235,49 +229,50 @@
         mMemo.clear();
     }
 
+    // TODO(ytai): remove this method once it is not used.
     status_t writeToParcel(Parcel *parcel) const {
-        if (parcel == nullptr) {
-            return BAD_VALUE;
-        }
-        status_t res = parcel->writeInt32(mInterpolatorType)
-                ?: parcel->writeFloat(mFirstSlope)
-                ?: parcel->writeFloat(mLastSlope)
-                ?: parcel->writeUint32((uint32_t)this->size()); // silent truncation
-        if (res != NO_ERROR) {
-            return res;
-        }
-        for (const auto &pt : *this) {
-            res = parcel->writeFloat(pt.first)
-                    ?: parcel->writeFloat(pt.second);
-            if (res != NO_ERROR) {
-                return res;
-            }
-        }
-        return NO_ERROR;
+        media::InterpolatorConfig config;
+        writeToConfig(&config);
+        return config.writeToParcel(parcel);
     }
 
+    void writeToConfig(media::InterpolatorConfig *config) const {
+        config->type = mInterpolatorType;
+        config->firstSlope = mFirstSlope;
+        config->lastSlope = mLastSlope;
+        for (const auto &pt : *this) {
+            config->xy.push_back(pt.first);
+            config->xy.push_back(pt.second);
+        }
+    }
+
+    // TODO(ytai): remove this method once it is not used.
     status_t readFromParcel(const Parcel &parcel) {
-        this->clear();
-        int32_t type;
-        uint32_t size;
-        status_t res = parcel.readInt32(&type)
-                        ?: parcel.readFloat(&mFirstSlope)
-                        ?: parcel.readFloat(&mLastSlope)
-                        ?: parcel.readUint32(&size)
-                        ?: setInterpolatorType((InterpolatorType)type);
+        media::InterpolatorConfig config;
+        status_t res = config.readFromParcel(&parcel);
         if (res != NO_ERROR) {
             return res;
         }
+        return readFromConfig(config);
+    }
+
+    status_t readFromConfig(const media::InterpolatorConfig &config) {
+        this->clear();
+        setInterpolatorType(config.type);
+        if ((config.xy.size() & 1) != 0) {
+            // xy size must be even.
+            return BAD_VALUE;
+        }
+        uint32_t size = config.xy.size() / 2;
+        mFirstSlope = config.firstSlope;
+        mLastSlope = config.lastSlope;
+
         // Note: We don't need to check size is within some bounds as
         // the Parcel read will fail if size is incorrectly specified too large.
         float lastx;
         for (uint32_t i = 0; i < size; ++i) {
-            float x, y;
-            res = parcel.readFloat(&x)
-                    ?: parcel.readFloat(&y);
-            if (res != NO_ERROR) {
-                return res;
-            }
+            float x = config.xy[i * 2];
+            float y = config.xy[i * 2 + 1];
             if ((i > 0 && !(x > lastx)) /* handle nan */
                     || y != y /* handle nan */) {
                 // This is a std::map object which imposes sorted order
diff --git a/include/media/VolumeShaper.h b/include/media/VolumeShaper.h
index fe519bb..f8ead2f 100644
--- a/include/media/VolumeShaper.h
+++ b/include/media/VolumeShaper.h
@@ -22,6 +22,11 @@
 #include <math.h>
 #include <sstream>
 
+#include <android/media/VolumeShaperConfiguration.h>
+#include <android/media/VolumeShaperConfigurationOptionFlag.h>
+#include <android/media/VolumeShaperOperation.h>
+#include <android/media/VolumeShaperOperationFlag.h>
+#include <android/media/VolumeShaperState.h>
 #include <binder/Parcel.h>
 #include <media/Interpolator.h>
 #include <utils/Mutex.h>
@@ -284,30 +289,38 @@
             clampVolume();
         }
 
-        // The parcel layout must match VolumeShaper.java
         status_t writeToParcel(Parcel *parcel) const override {
-            if (parcel == nullptr) return BAD_VALUE;
-            return parcel->writeInt32((int32_t)mType)
-                    ?: parcel->writeInt32(mId)
-                    ?: mType == TYPE_ID
-                        ? NO_ERROR
-                        : parcel->writeInt32((int32_t)mOptionFlags)
-                            ?: parcel->writeDouble(mDurationMs)
-                            ?: Interpolator<S, T>::writeToParcel(parcel);
+            VolumeShaperConfiguration parcelable;
+            writeToParcelable(&parcelable);
+            return parcelable.writeToParcel(parcel);
         }
 
-        status_t readFromParcel(const Parcel *parcel) override {
-            int32_t type, optionFlags;
-            return parcel->readInt32(&type)
-                    ?: setType((Type)type)
-                    ?: parcel->readInt32(&mId)
-                    ?: mType == TYPE_ID
-                        ? NO_ERROR
-                        : parcel->readInt32(&optionFlags)
-                            ?: setOptionFlags((OptionFlag)optionFlags)
-                            ?: parcel->readDouble(&mDurationMs)
-                            ?: Interpolator<S, T>::readFromParcel(*parcel)
-                            ?: checkCurve();
+        void writeToParcelable(VolumeShaperConfiguration *parcelable) const {
+            parcelable->id = getId();
+            parcelable->type = getTypeAsAidl();
+            parcelable->optionFlags = 0;
+            if (mType != TYPE_ID) {
+                parcelable->optionFlags = getOptionFlagsAsAidl();
+                parcelable->durationMs = getDurationMs();
+                Interpolator<S, T>::writeToConfig(&parcelable->interpolatorConfig);
+            }
+        }
+
+        status_t readFromParcel(const Parcel* parcel) override {
+            VolumeShaperConfiguration data;
+            return data.readFromParcel(parcel)
+                   ?: readFromParcelable(data);
+        }
+
+        status_t readFromParcelable(const VolumeShaperConfiguration& parcelable) {
+            setId(parcelable.id);
+            return setTypeFromAidl(parcelable.type)
+                   ?: mType == TYPE_ID
+                      ? NO_ERROR
+                      : setOptionFlagsFromAidl(parcelable.optionFlags)
+                        ?: setDurationMs(parcelable.durationMs)
+                           ?: Interpolator<S, T>::readFromConfig(parcelable.interpolatorConfig)
+                              ?: checkCurve();
         }
 
         // Returns a string for debug printing.
@@ -329,6 +342,51 @@
         int32_t mId;             // A valid id is >= 0.
         OptionFlag mOptionFlags; // option flags for the configuration.
         double mDurationMs;      // duration, must be > 0; default is 1000 ms.
+
+        int32_t getOptionFlagsAsAidl() const {
+            int32_t result = 0;
+            if (getOptionFlags() & OPTION_FLAG_VOLUME_IN_DBFS) {
+                result |=
+                        1 << static_cast<int>(VolumeShaperConfigurationOptionFlag::VOLUME_IN_DBFS);
+            }
+            if (getOptionFlags() & OPTION_FLAG_CLOCK_TIME) {
+                result |= 1 << static_cast<int>(VolumeShaperConfigurationOptionFlag::CLOCK_TIME);
+            }
+            return result;
+        }
+
+        status_t setOptionFlagsFromAidl(int32_t aidl) {
+            std::underlying_type_t<OptionFlag> options = 0;
+            if (aidl & (1 << static_cast<int>(VolumeShaperConfigurationOptionFlag::VOLUME_IN_DBFS))) {
+                options |= OPTION_FLAG_VOLUME_IN_DBFS;
+            }
+            if (aidl & (1 << static_cast<int>(VolumeShaperConfigurationOptionFlag::CLOCK_TIME))) {
+                options |= OPTION_FLAG_CLOCK_TIME;
+            }
+            return setOptionFlags(static_cast<OptionFlag>(options));
+        }
+
+        status_t setTypeFromAidl(VolumeShaperConfigurationType aidl) {
+            switch (aidl) {
+                case VolumeShaperConfigurationType::ID:
+                    return setType(TYPE_ID);
+                case VolumeShaperConfigurationType::SCALE:
+                    return setType(TYPE_SCALE);
+                default:
+                    return BAD_VALUE;
+            }
+        }
+
+        VolumeShaperConfigurationType getTypeAsAidl() const {
+            switch (getType()) {
+                case TYPE_ID:
+                    return VolumeShaperConfigurationType::ID;
+                case TYPE_SCALE:
+                    return VolumeShaperConfigurationType::SCALE;
+                default:
+                    LOG_ALWAYS_FATAL("Shouldn't get here");
+            }
+        }
     }; // Configuration
 
     /* VolumeShaper::Operation expresses an operation to perform on the
@@ -420,19 +478,29 @@
             return NO_ERROR;
         }
 
-        status_t writeToParcel(Parcel *parcel) const override {
+        status_t writeToParcel(Parcel* parcel) const override {
             if (parcel == nullptr) return BAD_VALUE;
-            return parcel->writeInt32((int32_t)mFlags)
-                    ?: parcel->writeInt32(mReplaceId)
-                    ?: parcel->writeFloat(mXOffset);
+            VolumeShaperOperation op;
+            writeToParcelable(&op);
+            return op.writeToParcel(parcel);
         }
 
-        status_t readFromParcel(const Parcel *parcel) override {
-            int32_t flags;
-            return parcel->readInt32(&flags)
-                    ?: parcel->readInt32(&mReplaceId)
-                    ?: parcel->readFloat(&mXOffset)
-                    ?: setFlags((Flag)flags);
+        void writeToParcelable(VolumeShaperOperation* op) const {
+            op->flags = getFlagsAsAidl();
+            op->replaceId = mReplaceId;
+            op->xOffset = mXOffset;
+        }
+
+        status_t readFromParcel(const Parcel* parcel) override {
+            VolumeShaperOperation op;
+            return op.readFromParcel(parcel)
+                   ?: readFromParcelable(op);
+        }
+
+        status_t readFromParcelable(const VolumeShaperOperation& op) {
+            mReplaceId = op.replaceId;
+            mXOffset = op.xOffset;
+            return setFlagsFromAidl(op.flags);
         }
 
         std::string toString() const {
@@ -445,6 +513,48 @@
         }
 
     private:
+        status_t setFlagsFromAidl(int32_t aidl) {
+            std::underlying_type_t<Flag> flags = 0;
+            if (aidl & (1 << static_cast<int>(VolumeShaperOperationFlag::REVERSE))) {
+                flags |= FLAG_REVERSE;
+            }
+            if (aidl & (1 << static_cast<int>(VolumeShaperOperationFlag::TERMINATE))) {
+                flags |= FLAG_TERMINATE;
+            }
+            if (aidl & (1 << static_cast<int>(VolumeShaperOperationFlag::JOIN))) {
+                flags |= FLAG_JOIN;
+            }
+            if (aidl & (1 << static_cast<int>(VolumeShaperOperationFlag::DELAY))) {
+                flags |= FLAG_DELAY;
+            }
+            if (aidl & (1 << static_cast<int>(VolumeShaperOperationFlag::CREATE_IF_NECESSARY))) {
+                flags |= FLAG_CREATE_IF_NECESSARY;
+            }
+            return setFlags(static_cast<Flag>(flags));
+        }
+
+        int32_t getFlagsAsAidl() const {
+            int32_t aidl = 0;
+            std::underlying_type_t<Flag> flags = getFlags();
+            if (flags & FLAG_REVERSE) {
+                aidl |= (1 << static_cast<int>(VolumeShaperOperationFlag::REVERSE));
+            }
+            if (flags & FLAG_TERMINATE) {
+                aidl |= (1 << static_cast<int>(VolumeShaperOperationFlag::TERMINATE));
+            }
+            if (flags & FLAG_JOIN) {
+                aidl |= (1 << static_cast<int>(VolumeShaperOperationFlag::JOIN));
+            }
+            if (flags & FLAG_DELAY) {
+                aidl |= (1 << static_cast<int>(VolumeShaperOperationFlag::DELAY));
+            }
+            if (flags & FLAG_CREATE_IF_NECESSARY) {
+                aidl |= (1 << static_cast<int>(VolumeShaperOperationFlag::CREATE_IF_NECESSARY));
+            }
+            return aidl;
+        }
+
+    private:
         Flag mFlags;        // operation to do
         int32_t mReplaceId; // if >= 0 the id to remove in a replace operation.
         S mXOffset;         // position in the curve to set if a valid number (not nan)
@@ -483,15 +593,28 @@
             mXOffset = xOffset;
         }
 
-        status_t writeToParcel(Parcel *parcel) const override {
+        status_t writeToParcel(Parcel* parcel) const override {
             if (parcel == nullptr) return BAD_VALUE;
-            return parcel->writeFloat(mVolume)
-                    ?: parcel->writeFloat(mXOffset);
+            VolumeShaperState state;
+            writeToParcelable(&state);
+            return state.writeToParcel(parcel);
         }
 
-        status_t readFromParcel(const Parcel *parcel) override {
-            return parcel->readFloat(&mVolume)
-                     ?: parcel->readFloat(&mXOffset);
+        void writeToParcelable(VolumeShaperState* parcelable) const {
+            parcelable->volume = mVolume;
+            parcelable->xOffset = mXOffset;
+        }
+
+        status_t readFromParcel(const Parcel* parcel) override {
+            VolumeShaperState state;
+            return state.readFromParcel(parcel)
+                   ?: readFromParcelable(state);
+        }
+
+        status_t readFromParcelable(const VolumeShaperState& parcelable) {
+            mVolume = parcelable.volume;
+            mXOffset = parcelable.xOffset;
+            return OK;
         }
 
         std::string toString() const {
diff --git a/media/libaudioclient/Android.bp b/media/libaudioclient/Android.bp
index 6881f42..c23c38c 100644
--- a/media/libaudioclient/Android.bp
+++ b/media/libaudioclient/Android.bp
@@ -15,9 +15,11 @@
     ],
     static_libs: [
         "audioflinger-aidl-unstable-cpp",
+        "av-types-aidl-unstable-cpp",
     ],
     export_static_lib_headers: [
         "audioflinger-aidl-unstable-cpp",
+        "av-types-aidl-unstable-cpp",
     ],
     target: {
         darwin: {
@@ -63,7 +65,7 @@
         export_aidl_headers: true,
         local_include_dirs: ["aidl"],
         include_dirs: [
-            "frameworks/av/media/libaudioclient/aidl",
+            "frameworks/av/aidl",
         ],
     },
 
@@ -91,6 +93,7 @@
     shared_libs: [
         "audioclient-types-aidl-unstable-cpp",
         "audioflinger-aidl-unstable-cpp",
+        "av-types-aidl-unstable-cpp",
         "capture_state_listener-aidl-cpp",
         "libaudioclient_aidl_conversion",
         "libaudiofoundation",
@@ -260,10 +263,19 @@
         "aidl/android/media/AudioSourceType.aidl",
         "aidl/android/media/AudioStreamType.aidl",
         "aidl/android/media/AudioUsage.aidl",
-    ],
+     ],
     imports: [
         "audio_common-aidl",
     ],
+    backend: {
+        cpp: {
+            min_sdk_version: "29",
+            apex_available: [
+                "//apex_available:platform",
+                "com.android.media",
+            ],
+        },
+    },
 }
 
 aidl_interface {
diff --git a/media/libaudioclient/PlayerBase.cpp b/media/libaudioclient/PlayerBase.cpp
index b0c68e5..c443865 100644
--- a/media/libaudioclient/PlayerBase.cpp
+++ b/media/libaudioclient/PlayerBase.cpp
@@ -22,7 +22,8 @@
 
 namespace android {
 
-using media::VolumeShaper;
+using media::VolumeShaperConfiguration;
+using media::VolumeShaperOperation;
 
 //--------------------------------------------------------------------------------------------------
 PlayerBase::PlayerBase() : BnPlayer(),
@@ -178,8 +179,8 @@
 }
 
 binder::Status PlayerBase::applyVolumeShaper(
-            const VolumeShaper::Configuration& configuration __unused,
-            const VolumeShaper::Operation& operation __unused) {
+            const VolumeShaperConfiguration& configuration __unused,
+            const VolumeShaperOperation& operation __unused) {
     ALOGW("applyVolumeShaper() is not supported");
     return binder::Status::ok();
 }
diff --git a/media/libaudioclient/TrackPlayerBase.cpp b/media/libaudioclient/TrackPlayerBase.cpp
index 0a914fc..e571838 100644
--- a/media/libaudioclient/TrackPlayerBase.cpp
+++ b/media/libaudioclient/TrackPlayerBase.cpp
@@ -106,11 +106,17 @@
 
 
 binder::Status TrackPlayerBase::applyVolumeShaper(
-        const VolumeShaper::Configuration& configuration,
-        const VolumeShaper::Operation& operation) {
+        const media::VolumeShaperConfiguration& configuration,
+        const media::VolumeShaperOperation& operation) {
 
-    sp<VolumeShaper::Configuration> spConfiguration = new VolumeShaper::Configuration(configuration);
-    sp<VolumeShaper::Operation> spOperation = new VolumeShaper::Operation(operation);
+    sp<VolumeShaper::Configuration> spConfiguration = new VolumeShaper::Configuration();
+    sp<VolumeShaper::Operation> spOperation = new VolumeShaper::Operation();
+
+    status_t s = spConfiguration->readFromParcelable(configuration)
+            ?: spOperation->readFromParcelable(operation);
+    if (s != OK) {
+        return binder::Status::fromStatusT(s);
+    }
 
     if (mAudioTrack != 0) {
         ALOGD("TrackPlayerBase::applyVolumeShaper() from IPlayer");
diff --git a/media/libaudioclient/aidl/android/media/IPlayer.aidl b/media/libaudioclient/aidl/android/media/IPlayer.aidl
index a90fcdd..8c2c471 100644
--- a/media/libaudioclient/aidl/android/media/IPlayer.aidl
+++ b/media/libaudioclient/aidl/android/media/IPlayer.aidl
@@ -16,8 +16,8 @@
 
 package android.media;
 
-import android.media.VolumeShaper.Configuration;
-import android.media.VolumeShaper.Operation;
+import android.media.VolumeShaperConfiguration;
+import android.media.VolumeShaperOperation;
 
 /**
  * @hide
@@ -29,6 +29,6 @@
     oneway void setVolume(float vol);
     oneway void setPan(float pan);
     oneway void setStartDelayMs(int delayMs);
-    oneway void applyVolumeShaper(in Configuration configuration,
-                                  in Operation operation);
+    oneway void applyVolumeShaper(in VolumeShaperConfiguration configuration,
+                                  in VolumeShaperOperation operation);
 }
diff --git a/media/libaudioclient/aidl/android/media/VolumeShaper/Configuration.aidl b/media/libaudioclient/aidl/android/media/VolumeShaper/Configuration.aidl
deleted file mode 100644
index fd0e60f..0000000
--- a/media/libaudioclient/aidl/android/media/VolumeShaper/Configuration.aidl
+++ /dev/null
@@ -1,19 +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.
- */
-
-package android.media.VolumeShaper;
-
-parcelable Configuration cpp_header "media/VolumeShaper.h";
diff --git a/media/libaudioclient/aidl/android/media/VolumeShaper/Operation.aidl b/media/libaudioclient/aidl/android/media/VolumeShaper/Operation.aidl
deleted file mode 100644
index 4290d9d..0000000
--- a/media/libaudioclient/aidl/android/media/VolumeShaper/Operation.aidl
+++ /dev/null
@@ -1,19 +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.
- */
-
-package android.media.VolumeShaper;
-
-parcelable Operation cpp_header "media/VolumeShaper.h";
diff --git a/media/libaudioclient/include/media/PlayerBase.h b/media/libaudioclient/include/media/PlayerBase.h
index e7a8abc..4aad9b4 100644
--- a/media/libaudioclient/include/media/PlayerBase.h
+++ b/media/libaudioclient/include/media/PlayerBase.h
@@ -19,6 +19,7 @@
 
 #include <audiomanager/AudioManager.h>
 #include <audiomanager/IAudioManager.h>
+#include <utils/Mutex.h>
 
 #include "android/media/BnPlayer.h"
 
@@ -40,8 +41,8 @@
     virtual binder::Status setPan(float pan) override;
     virtual binder::Status setStartDelayMs(int32_t delayMs) override;
     virtual binder::Status applyVolumeShaper(
-            const media::VolumeShaper::Configuration& configuration,
-            const media::VolumeShaper::Operation& operation) override;
+            const media::VolumeShaperConfiguration& configuration,
+            const media::VolumeShaperOperation& operation) override;
 
             status_t startWithStatus();
             status_t pauseWithStatus();
diff --git a/media/libaudioclient/include/media/TrackPlayerBase.h b/media/libaudioclient/include/media/TrackPlayerBase.h
index 66e9b3b..6d26e63 100644
--- a/media/libaudioclient/include/media/TrackPlayerBase.h
+++ b/media/libaudioclient/include/media/TrackPlayerBase.h
@@ -33,8 +33,8 @@
 
     //IPlayer implementation
     virtual binder::Status applyVolumeShaper(
-            const media::VolumeShaper::Configuration& configuration,
-            const media::VolumeShaper::Operation& operation);
+            const media::VolumeShaperConfiguration& configuration,
+            const media::VolumeShaperOperation& operation);
 
     //FIXME move to protected field, so far made public to minimize changes to AudioTrack logic
     sp<AudioTrack> mAudioTrack;
diff --git a/media/libmedia/Android.bp b/media/libmedia/Android.bp
index 39523de..1a7eb6f 100644
--- a/media/libmedia/Android.bp
+++ b/media/libmedia/Android.bp
@@ -322,6 +322,8 @@
 
     shared_libs: [
         "android.hidl.token@1.0-utils",
+        "audioclient-types-aidl-unstable-cpp",
+        "av-types-aidl-unstable-cpp",
         "liblog",
         "libcutils",
         "libprocessgroup",
diff --git a/media/libmediaplayerservice/Android.bp b/media/libmediaplayerservice/Android.bp
index 324f4ae..b62317a 100644
--- a/media/libmediaplayerservice/Android.bp
+++ b/media/libmediaplayerservice/Android.bp
@@ -15,6 +15,7 @@
     shared_libs: [
         "android.hardware.media.c2@1.0",
         "android.hardware.media.omx@1.0",
+        "av-types-aidl-unstable-cpp",
         "libbase",
         "libandroid_net",
         "libaudioclient",
diff --git a/services/audioflinger/Android.bp b/services/audioflinger/Android.bp
index 261af5a..7443320 100644
--- a/services/audioflinger/Android.bp
+++ b/services/audioflinger/Android.bp
@@ -37,6 +37,7 @@
     shared_libs: [
         "audioflinger-aidl-unstable-cpp",
         "audioclient-types-aidl-unstable-cpp",
+        "av-types-aidl-unstable-cpp",
         "libaudioclient_aidl_conversion",
         "libaudiofoundation",
         "libaudiohal",