diff --git a/include/media/AudioCommonTypes.h b/include/media/AudioCommonTypes.h
new file mode 120000
index 0000000..ae7c99a
--- /dev/null
+++ b/include/media/AudioCommonTypes.h
@@ -0,0 +1 @@
+../../media/libaudioclient/include/media/AudioCommonTypes.h
\ No newline at end of file
diff --git a/media/libaudioclient/include/media/AudioCommonTypes.h b/media/libaudioclient/include/media/AudioCommonTypes.h
new file mode 100644
index 0000000..4c936d4
--- /dev/null
+++ b/media/libaudioclient/include/media/AudioCommonTypes.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 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 <system/audio.h>
+#include <system/audio_policy.h>
+#include <binder/Parcel.h>
+#include <utils/String8.h>
+#include <utils/Vector.h>
+
+namespace android {
+
+enum product_strategy_t : uint32_t;
+const product_strategy_t PRODUCT_STRATEGY_NONE = static_cast<product_strategy_t>(-1);
+
+using AttributesVector = std::vector<audio_attributes_t>;
+
+} // namespace android
+
diff --git a/services/audiopolicy/Android.mk b/services/audiopolicy/Android.mk
index ebb4f3b..243020d 100644
--- a/services/audiopolicy/Android.mk
+++ b/services/audiopolicy/Android.mk
@@ -11,9 +11,11 @@
 LOCAL_C_INCLUDES := \
     frameworks/av/services/audioflinger \
     $(call include-path-for, audio-utils) \
-    frameworks/av/services/audiopolicy/common/include \
     frameworks/av/services/audiopolicy/engine/interface \
 
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon
+
 LOCAL_SHARED_LIBRARIES := \
     libcutils \
     libutils \
@@ -76,10 +78,12 @@
 endif # ifeq ($(USE_CONFIGURABLE_AUDIO_POLICY), 1)
 
 LOCAL_C_INCLUDES += \
-    frameworks/av/services/audiopolicy/common/include \
     frameworks/av/services/audiopolicy/engine/interface \
     $(call include-path-for, audio-utils) \
 
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon
+
 LOCAL_STATIC_LIBRARIES := \
     libaudiopolicycomponents
 
@@ -114,10 +118,12 @@
     libaudiopolicycomponents
 
 LOCAL_C_INCLUDES += \
-    frameworks/av/services/audiopolicy/common/include \
     frameworks/av/services/audiopolicy/engine/interface \
     $(call include-path-for, audio-utils) \
 
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon
+
 LOCAL_CFLAGS := -Wall -Werror
 
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
diff --git a/services/audiopolicy/common/include/RoutingStrategy.h b/services/audiopolicy/common/include/RoutingStrategy.h
index f8a1cd6..bddb340 100644
--- a/services/audiopolicy/common/include/RoutingStrategy.h
+++ b/services/audiopolicy/common/include/RoutingStrategy.h
@@ -18,10 +18,6 @@
 
 namespace android {
 
-// Time in milliseconds after media stopped playing during which we consider that the
-// sonification should be as unobtrusive as during the time media was playing.
-#define SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY 5000
-
 enum routing_strategy {
     STRATEGY_NONE = -1,
     STRATEGY_MEDIA,
diff --git a/services/audiopolicy/common/include/policy.h b/services/audiopolicy/common/include/policy.h
index 837ca47..04f1eb2 100644
--- a/services/audiopolicy/common/include/policy.h
+++ b/services/audiopolicy/common/include/policy.h
@@ -17,9 +17,21 @@
 #pragma once
 
 #include <system/audio.h>
+#include <vector>
+
+namespace android {
+
+using StreamTypeVector = std::vector<audio_stream_type_t>;
+
+
+static const audio_attributes_t defaultAttr = AUDIO_ATTRIBUTES_INITIALIZER;
+
+} // namespace android
 
 static const audio_format_t gDynamicFormat = AUDIO_FORMAT_DEFAULT;
 
+static const uint32_t SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY = 5000;
+
 // For mixed output and inputs, the policy will use max mixer sampling rates.
 // Do not limit sampling rate otherwise
 #define SAMPLE_RATE_HZ_MAX 192000
@@ -151,3 +163,9 @@
     }
     return format1 == format2;
 }
+
+constexpr bool operator==(const audio_attributes_t &lhs, const audio_attributes_t &rhs)
+{
+    return lhs.usage == rhs.usage && lhs.content_type == rhs.content_type &&
+            lhs.flags == rhs.flags && (std::strcmp(lhs.tags, rhs.tags) == 0);
+}
diff --git a/services/audiopolicy/engine/Android.mk b/services/audiopolicy/engine/Android.mk
new file mode 100644
index 0000000..dcce8e3
--- /dev/null
+++ b/services/audiopolicy/engine/Android.mk
@@ -0,0 +1,9 @@
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+#######################################################################
+# Recursive call sub-folder Android.mk
+#
+include $(call all-makefiles-under,$(LOCAL_PATH))
+
diff --git a/services/audiopolicy/engine/common/Android.bp b/services/audiopolicy/engine/common/Android.bp
new file mode 100644
index 0000000..e6ede07
--- /dev/null
+++ b/services/audiopolicy/engine/common/Android.bp
@@ -0,0 +1,19 @@
+// Copyright (C) 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.
+
+cc_library_headers {
+    name: "libaudiopolicyengine_common_headers",
+    host_supported: true,
+    export_include_dirs: ["include"],
+}
diff --git a/services/audiopolicy/engine/common/include/EngineBase.h b/services/audiopolicy/engine/common/include/EngineBase.h
new file mode 100644
index 0000000..32898b1
--- /dev/null
+++ b/services/audiopolicy/engine/common/include/EngineBase.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 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 <EngineConfig.h>
+#include <AudioPolicyManagerInterface.h>
+#include <ProductStrategy.h>
+
+namespace android {
+namespace audio_policy {
+
+class EngineBase : public AudioPolicyManagerInterface
+{
+public:
+    ///
+    /// from AudioPolicyManagerInterface
+    ///
+    android::status_t initCheck() override;
+
+    void setObserver(AudioPolicyManagerObserver *observer) override;
+
+    status_t setPhoneState(audio_mode_t mode) override;
+
+    audio_mode_t getPhoneState() const override { return mPhoneState; }
+
+    status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) override
+    {
+        mForceUse[usage] = config;
+        return NO_ERROR;
+    }
+
+    audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const override
+    {
+        return mForceUse[usage];
+    }
+    android::status_t setDeviceConnectionState(const sp<DeviceDescriptor> /*devDesc*/,
+                                               audio_policy_dev_state_t /*state*/) override
+    {
+        return NO_ERROR;
+    }
+    product_strategy_t getProductStrategyForAttributes(
+            const audio_attributes_t &attr) const override;
+
+    audio_stream_type_t getStreamTypeForAttributes(const audio_attributes_t &attr) const override;
+
+    audio_attributes_t getAttributesForStreamType(audio_stream_type_t stream) const override;
+
+    StreamTypeVector getStreamTypesForProductStrategy(product_strategy_t ps) const override;
+
+    AttributesVector getAllAttributesForProductStrategy(product_strategy_t ps) const override;
+
+    StrategyVector getOrderedProductStrategies() const override;
+
+    void dump(String8 *dst) const override;
+
+
+    engineConfig::ParsingResult loadAudioPolicyEngineConfig();
+
+    const ProductStrategyMap &getProductStrategies() const { return mProductStrategies; }
+
+    ProductStrategyMap &getProductStrategies() { return mProductStrategies; }
+
+    product_strategy_t getProductStrategyForStream(audio_stream_type_t stream) const;
+
+    product_strategy_t getProductStrategyByName(const std::string &name) const;
+
+    AudioPolicyManagerObserver *getApmObserver() const { return mApmObserver; }
+
+    inline bool isInCall() const
+    {
+        return is_state_in_call(getPhoneState());
+    }
+
+private:
+    AudioPolicyManagerObserver *mApmObserver = nullptr;
+
+    ProductStrategyMap mProductStrategies;
+    audio_mode_t mPhoneState = AUDIO_MODE_NORMAL;  /**< current phone state. */
+
+    /** current forced use configuration. */
+    audio_policy_forced_cfg_t mForceUse[AUDIO_POLICY_FORCE_USE_CNT] = {};
+};
+
+} // namespace audio_policy
+} // namespace android
diff --git a/services/audiopolicy/engine/common/include/ProductStrategy.h b/services/audiopolicy/engine/common/include/ProductStrategy.h
new file mode 100644
index 0000000..66ae86e
--- /dev/null
+++ b/services/audiopolicy/engine/common/include/ProductStrategy.h
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 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 <system/audio.h>
+#include <AudioPolicyManagerInterface.h>
+#include <utils/RefBase.h>
+#include <HandleGenerator.h>
+#include <string>
+#include <vector>
+#include <map>
+#include <utils/Errors.h>
+#include <utils/String8.h>
+
+namespace android {
+
+/**
+ * @brief The ProductStrategy class describes for each product_strategy_t identifier the
+ * associated audio attributes, the device types to use, the device address to use.
+ * The identifier is voluntarily not strongly typed in order to be extensible by OEM.
+ */
+class ProductStrategy : public virtual RefBase, private HandleGenerator<uint32_t>
+{
+private:
+    struct AudioAttributes {
+        audio_stream_type_t mStream = AUDIO_STREAM_DEFAULT;
+        uint32_t mGroupId = 0;
+        audio_attributes_t mAttributes = AUDIO_ATTRIBUTES_INITIALIZER;
+    };
+
+    using AudioAttributesVector = std::vector<AudioAttributes>;
+
+public:
+    ProductStrategy(const std::string &name);
+
+    void addAttributes(const AudioAttributes &audioAttributes);
+
+    std::string getName() const { return mName; }
+    AttributesVector getAudioAttributes() const;
+    product_strategy_t getId() const { return mId; }
+    StreamTypeVector getSupportedStreams() const;
+
+    /**
+     * @brief matches checks if the given audio attributes shall follow the strategy.
+     *        Order of the attributes within a strategy matters.
+     *        If only the usage is available, the check is performed on the usages of the given
+     *        attributes, otherwise all fields must match.
+     * @param attributes to consider
+     * @return true if attributes matches with the strategy, false otherwise.
+     */
+    bool matches(const audio_attributes_t attributes) const;
+
+    bool supportStreamType(const audio_stream_type_t &streamType) const;
+
+    void setDeviceAddress(const std::string &address)
+    {
+        mDeviceAddress = address;
+    }
+
+    std::string getDeviceAddress() const { return mDeviceAddress; }
+
+    void setDeviceTypes(audio_devices_t devices)
+    {
+        mApplicableDevices = devices;
+    }
+
+    audio_devices_t getDeviceTypes() const { return mApplicableDevices; }
+
+    audio_attributes_t getAttributesForStreamType(audio_stream_type_t stream) const;
+    audio_stream_type_t getStreamTypeForAttributes(const audio_attributes_t &attr) const;
+
+    bool isDefault() const;
+
+    void dump(String8 *dst, int spaces = 0) const;
+
+    /**
+     * @brief attributesMatches: checks if client attributes matches with a reference attributes
+     * "matching" means the usage shall match if reference attributes has a defined usage, AND
+     * content type shall match if reference attributes has a defined content type AND
+     * flags shall match if reference attributes has defined flags AND
+     * tags shall match if reference attributes has defined tags.
+     * Reference attributes "default" shall not be considered as a "true" case. This convention
+     * is used to identify the default strategy.
+     * @param refAttributes to be considered
+     * @param clientAttritubes to be considered
+     * @return true if matching, false otherwise
+     */
+    static bool attributesMatches(const audio_attributes_t refAttributes,
+                                  const audio_attributes_t clientAttritubes);
+private:
+    std::string mName;
+
+    AudioAttributesVector mAttributesVector;
+
+    product_strategy_t mId;
+
+    std::string mDeviceAddress; /**< Device address applicable for this strategy, maybe empty */
+
+    /**
+     * Applicable device(s) type mask for this strategy.
+     */
+    audio_devices_t mApplicableDevices = AUDIO_DEVICE_NONE;
+};
+
+class ProductStrategyMap : public std::map<product_strategy_t, sp<ProductStrategy> >
+{
+public:
+    /**
+     * @brief getProductStrategyForAttribute. The order of the vector is dimensionning.
+     * @param attr
+     * @return applicable product strategy for the given attribute, default if none applicable.
+     */
+    product_strategy_t getProductStrategyForAttributes(const audio_attributes_t &attr) const;
+
+    product_strategy_t getProductStrategyForStream(audio_stream_type_t stream) const;
+
+    audio_attributes_t getAttributesForStreamType(audio_stream_type_t stream) const;
+
+    audio_stream_type_t getStreamTypeForAttributes(const audio_attributes_t &attr) const;
+
+    /**
+     * @brief getAttributesForProductStrategy can be called from
+     *        AudioManager: in this case, the product strategy IS the former routing strategy
+     *        CarAudioManager: in this case, the product strategy IS the car usage
+     *                      [getAudioAttributesForCarUsage]
+     *        OemExtension: in this case, the product strategy IS the Oem usage
+     *
+     * @param strategy
+     * @return audio attributes (or at least one of the attributes) following the given strategy.
+     */
+    audio_attributes_t getAttributesForProductStrategy(product_strategy_t strategy) const;
+
+    audio_devices_t getDeviceTypesForProductStrategy(product_strategy_t strategy) const;
+
+    std::string getDeviceAddressForProductStrategy(product_strategy_t strategy) const;
+
+    product_strategy_t getDefault() const;
+
+    void dump(String8 *dst, int spaces = 0) const;
+};
+
+} // namespace android
diff --git a/services/audiopolicy/engine/common/src/EngineBase.cpp b/services/audiopolicy/engine/common/src/EngineBase.cpp
new file mode 100644
index 0000000..0f4d5a5
--- /dev/null
+++ b/services/audiopolicy/engine/common/src/EngineBase.cpp
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 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 "APM::AudioPolicyEngine/Base"
+#define LOG_NDEBUG 0
+
+#include "EngineBase.h"
+#include "EngineDefaultConfig.h"
+#include <TypeConverter.h>
+
+namespace android {
+namespace audio_policy {
+
+void EngineBase::setObserver(AudioPolicyManagerObserver *observer)
+{
+    ALOG_ASSERT(observer != NULL, "Invalid Audio Policy Manager observer");
+    mApmObserver = observer;
+}
+
+status_t EngineBase::initCheck()
+{
+    return (mApmObserver != nullptr)? NO_ERROR : NO_INIT;
+}
+
+status_t EngineBase::setPhoneState(audio_mode_t state)
+{
+    ALOGV("setPhoneState() state %d", state);
+
+    if (state < 0 || state >= AUDIO_MODE_CNT) {
+        ALOGW("setPhoneState() invalid state %d", state);
+        return BAD_VALUE;
+    }
+
+    if (state == mPhoneState ) {
+        ALOGW("setPhoneState() setting same state %d", state);
+        return BAD_VALUE;
+    }
+
+    // store previous phone state for management of sonification strategy below
+    int oldState = mPhoneState;
+    mPhoneState = state;
+
+    if (!is_state_in_call(oldState) && is_state_in_call(state)) {
+        ALOGV("  Entering call in setPhoneState()");
+    } else if (is_state_in_call(oldState) && !is_state_in_call(state)) {
+        ALOGV("  Exiting call in setPhoneState()");
+    }
+    return NO_ERROR;
+}
+
+product_strategy_t EngineBase::getProductStrategyForAttributes(const audio_attributes_t &attr) const
+{
+    return mProductStrategies.getProductStrategyForAttributes(attr);
+}
+
+audio_stream_type_t EngineBase::getStreamTypeForAttributes(const audio_attributes_t &attr) const
+{
+    return mProductStrategies.getStreamTypeForAttributes(attr);
+}
+
+audio_attributes_t EngineBase::getAttributesForStreamType(audio_stream_type_t stream) const
+{
+    return mProductStrategies.getAttributesForStreamType(stream);
+}
+
+product_strategy_t EngineBase::getProductStrategyForStream(audio_stream_type_t stream) const
+{
+    return mProductStrategies.getProductStrategyForStream(stream);
+}
+
+product_strategy_t EngineBase::getProductStrategyByName(const std::string &name) const
+{
+    for (const auto &iter : mProductStrategies) {
+        if (iter.second->getName() == name) {
+            return iter.second->getId();
+        }
+    }
+    return PRODUCT_STRATEGY_NONE;
+}
+
+engineConfig::ParsingResult EngineBase::loadAudioPolicyEngineConfig()
+{
+    auto loadProductStrategies =
+            [](auto& strategyConfigs, auto& productStrategies) {
+        uint32_t groupid = 0;
+        for (auto& strategyConfig : strategyConfigs) {
+            sp<ProductStrategy> strategy = new ProductStrategy(strategyConfig.name);
+            for (const auto &group : strategyConfig.attributesGroups) {
+                for (const auto &attr : group.attributesVect) {
+                    strategy->addAttributes({group.stream, groupid, attr});
+                }
+                groupid += 1;
+            }
+            product_strategy_t strategyId = strategy->getId();
+            productStrategies[strategyId] = strategy;
+        }
+    };
+
+    auto result = engineConfig::parse();
+    if (result.parsedConfig == nullptr) {
+        ALOGW("%s: No configuration found, using default matching phone experience.", __FUNCTION__);
+        result = {std::make_unique<engineConfig::Config>(gDefaultEngineConfig), 0};
+    }
+    ALOGE_IF(result.nbSkippedElement != 0, "skipped %zu elements", result.nbSkippedElement);
+    loadProductStrategies(result.parsedConfig->productStrategies, mProductStrategies);
+    return result;
+}
+
+StrategyVector EngineBase::getOrderedProductStrategies() const
+{
+    auto findByFlag = [](const auto &productStrategies, auto flag) {
+        return std::find_if(begin(productStrategies), end(productStrategies),
+                            [&](const auto &strategy) {
+            for (const auto &attributes : strategy.second->getAudioAttributes()) {
+                if ((attributes.flags & flag) == flag) {
+                    return true;
+                }
+            }
+            return false;
+        });
+    };
+    auto strategies = mProductStrategies;
+    auto enforcedAudibleStrategyIter = findByFlag(strategies, AUDIO_FLAG_AUDIBILITY_ENFORCED);
+
+    if (getForceUse(AUDIO_POLICY_FORCE_FOR_SYSTEM) == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED &&
+            enforcedAudibleStrategyIter != strategies.end()) {
+        auto enforcedAudibleStrategy = *enforcedAudibleStrategyIter;
+        strategies.erase(enforcedAudibleStrategyIter);
+        strategies.insert(begin(strategies), enforcedAudibleStrategy);
+    }
+    StrategyVector orderedStrategies;
+    for (const auto &iter : strategies) {
+        orderedStrategies.push_back(iter.second->getId());
+    }
+    return orderedStrategies;
+}
+
+StreamTypeVector EngineBase::getStreamTypesForProductStrategy(product_strategy_t ps) const
+{
+    // @TODO default music stream to control volume if no group?
+    return (mProductStrategies.find(ps) != end(mProductStrategies)) ?
+                mProductStrategies.at(ps)->getSupportedStreams() :
+                StreamTypeVector(AUDIO_STREAM_MUSIC);
+}
+
+AttributesVector EngineBase::getAllAttributesForProductStrategy(product_strategy_t ps) const
+{
+    return (mProductStrategies.find(ps) != end(mProductStrategies)) ?
+                mProductStrategies.at(ps)->getAudioAttributes() : AttributesVector();
+}
+
+void EngineBase::dump(String8 *dst) const
+{
+    mProductStrategies.dump(dst, 2);
+}
+
+} // namespace audio_policy
+} // namespace android
diff --git a/services/audiopolicy/engine/common/src/EngineDefaultConfig.h b/services/audiopolicy/engine/common/src/EngineDefaultConfig.h
new file mode 100644
index 0000000..5f546b3
--- /dev/null
+++ b/services/audiopolicy/engine/common/src/EngineDefaultConfig.h
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 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 <system/audio.h>
+
+namespace android {
+/**
+ * @brief AudioProductStrategies hard coded array of strategies to fill new engine API contract.
+ */
+const engineConfig::ProductStrategies gOrderedStrategies = {
+    {"STRATEGY_PHONE",
+     {
+         {"phone", AUDIO_STREAM_VOICE_CALL,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_VOICE_COMMUNICATION, AUDIO_SOURCE_DEFAULT, 0,
+            ""}},
+         },
+         {"sco", AUDIO_STREAM_BLUETOOTH_SCO,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_UNKNOWN, AUDIO_SOURCE_DEFAULT, AUDIO_FLAG_SCO,
+            ""}},
+         }
+     },
+    },
+    {"STRATEGY_SONIFICATION",
+     {
+         {"ring", AUDIO_STREAM_RING,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE,
+            AUDIO_SOURCE_DEFAULT, 0, ""}}
+         },
+         {"alarm", AUDIO_STREAM_ALARM,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_ALARM, AUDIO_SOURCE_DEFAULT, 0, ""}},
+         }
+     },
+    },
+    {"STRATEGY_ENFORCED_AUDIBLE",
+     {
+         {"", AUDIO_STREAM_ENFORCED_AUDIBLE,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_UNKNOWN, AUDIO_SOURCE_DEFAULT,
+            AUDIO_FLAG_AUDIBILITY_ENFORCED, ""}}
+         }
+     },
+    },
+    {"STRATEGY_ACCESSIBILITY",
+     {
+         {"", AUDIO_STREAM_ACCESSIBILITY,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY,
+            AUDIO_SOURCE_DEFAULT, 0, ""}}
+         }
+     },
+    },
+    {"STRATEGY_SONIFICATION_RESPECTFUL",
+     {
+         {"", AUDIO_STREAM_NOTIFICATION,
+          {
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_NOTIFICATION, AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST,
+               AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT,
+               AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED,
+               AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_NOTIFICATION_EVENT,
+               AUDIO_SOURCE_DEFAULT, 0, ""}
+          }
+         }
+     },
+    },
+    {"STRATEGY_MEDIA",
+     {
+         {"music", AUDIO_STREAM_MUSIC,
+          {
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_MEDIA, AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_GAME, AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_ASSISTANT, AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE,
+               AUDIO_SOURCE_DEFAULT, 0, ""},
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_UNKNOWN, AUDIO_SOURCE_DEFAULT, 0, ""}
+          },
+         },
+         {"system", AUDIO_STREAM_SYSTEM,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_ASSISTANCE_SONIFICATION,
+            AUDIO_SOURCE_DEFAULT, 0, ""}}
+         }
+     },
+    },
+    {"STRATEGY_DTMF",
+     {
+         {"", AUDIO_STREAM_DTMF,
+          {
+              {AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING,
+               AUDIO_SOURCE_DEFAULT, 0, ""}
+          }
+         }
+     },
+    },
+    {"STRATEGY_TRANSMITTED_THROUGH_SPEAKER",
+     {
+         {"", AUDIO_STREAM_TTS,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_UNKNOWN, AUDIO_SOURCE_DEFAULT,
+            AUDIO_FLAG_BEACON, ""}}
+         }
+     },
+    },
+    {"STRATEGY_REROUTING",
+     {
+         {"", AUDIO_STREAM_REROUTING,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_UNKNOWN, AUDIO_SOURCE_DEFAULT, 0, ""}}
+         }
+     },
+    },
+    {"STRATEGY_PATCH",
+     {
+         {"", AUDIO_STREAM_PATCH,
+          {{AUDIO_CONTENT_TYPE_UNKNOWN, AUDIO_USAGE_UNKNOWN, AUDIO_SOURCE_DEFAULT, 0, ""}}
+         }
+     },
+    }
+};
+
+const engineConfig::Config gDefaultEngineConfig = {
+    1.0,
+    gOrderedStrategies
+};
+} // namespace android
diff --git a/services/audiopolicy/engine/common/src/ProductStrategy.cpp b/services/audiopolicy/engine/common/src/ProductStrategy.cpp
new file mode 100644
index 0000000..a3edb39
--- /dev/null
+++ b/services/audiopolicy/engine/common/src/ProductStrategy.cpp
@@ -0,0 +1,257 @@
+/*
+ * Copyright (C) 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 "APM::AudioPolicyEngine/ProductStrategy"
+//#define LOG_NDEBUG 0
+
+#include "ProductStrategy.h"
+
+#include <media/TypeConverter.h>
+#include <utils/String8.h>
+#include <cstdint>
+#include <string>
+
+#include <log/log.h>
+
+
+namespace android {
+
+ProductStrategy::ProductStrategy(const std::string &name) :
+    mName(name),
+    mId(static_cast<product_strategy_t>(HandleGenerator<uint32_t>::getNextHandle()))
+{
+}
+
+void ProductStrategy::addAttributes(const AudioAttributes &audioAttributes)
+{
+    mAttributesVector.push_back(audioAttributes);
+}
+
+AttributesVector ProductStrategy::getAudioAttributes() const
+{
+    AttributesVector attrVector;
+    for (const auto &attrGroup : mAttributesVector) {
+        attrVector.push_back(attrGroup.mAttributes);
+    }
+    if (not attrVector.empty()) {
+        return attrVector;
+    }
+    return { AUDIO_ATTRIBUTES_INITIALIZER };
+}
+
+// @todo: all flags required to match?
+//        all tags required to match?
+/* static */
+bool ProductStrategy::attributesMatches(const audio_attributes_t refAttributes,
+                                        const audio_attributes_t clientAttritubes)
+{
+    if (refAttributes == defaultAttr) {
+        // The default product strategy is the strategy that holds default attributes by convention.
+        // All attributes that fail to match will follow the default strategy for routing.
+        // Choosing the default must be done as a fallback, the attributes match shall not
+        // selects the default.
+        return false;
+    }
+    return ((refAttributes.usage == AUDIO_USAGE_UNKNOWN) ||
+            (clientAttritubes.usage == refAttributes.usage)) &&
+            ((refAttributes.content_type == AUDIO_CONTENT_TYPE_UNKNOWN) ||
+             (clientAttritubes.content_type == refAttributes.content_type)) &&
+            ((refAttributes.flags == AUDIO_OUTPUT_FLAG_NONE) ||
+             (clientAttritubes.flags != AUDIO_OUTPUT_FLAG_NONE &&
+            (clientAttritubes.flags & refAttributes.flags) == clientAttritubes.flags)) &&
+            ((strlen(refAttributes.tags) == 0) ||
+             (std::strcmp(clientAttritubes.tags, refAttributes.tags) == 0));
+}
+
+bool ProductStrategy::matches(const audio_attributes_t attr) const
+{
+    return std::find_if(begin(mAttributesVector), end(mAttributesVector),
+                        [&attr](const auto &supportedAttr) {
+        return attributesMatches(supportedAttr.mAttributes, attr); }) != end(mAttributesVector);
+}
+
+audio_stream_type_t ProductStrategy::getStreamTypeForAttributes(const audio_attributes_t &attr) const
+{
+    const auto iter = std::find_if(begin(mAttributesVector), end(mAttributesVector),
+                                   [&attr](const auto &supportedAttr) {
+        return attributesMatches(supportedAttr.mAttributes, attr); });
+    return iter != end(mAttributesVector) ? iter->mStream : AUDIO_STREAM_DEFAULT;
+}
+
+audio_attributes_t ProductStrategy::getAttributesForStreamType(audio_stream_type_t streamType) const
+{
+    const auto iter = std::find_if(begin(mAttributesVector), end(mAttributesVector),
+                                   [&streamType](const auto &supportedAttr) {
+        return supportedAttr.mStream == streamType; });
+    return iter != end(mAttributesVector) ? iter->mAttributes : AUDIO_ATTRIBUTES_INITIALIZER;
+}
+
+bool ProductStrategy::isDefault() const
+{
+    return std::find_if(begin(mAttributesVector), end(mAttributesVector), [](const auto &attr) {
+        return attr.mAttributes == defaultAttr; }) != end(mAttributesVector);
+}
+
+StreamTypeVector ProductStrategy::getSupportedStreams() const
+{
+    StreamTypeVector streams;
+    for (const auto &supportedAttr : mAttributesVector) {
+        if (std::find(begin(streams), end(streams), supportedAttr.mStream) == end(streams) &&
+                supportedAttr.mStream != AUDIO_STREAM_DEFAULT) {
+            streams.push_back(supportedAttr.mStream);
+        }
+    }
+    return streams;
+}
+
+bool ProductStrategy::supportStreamType(const audio_stream_type_t &streamType) const
+{
+    return std::find_if(begin(mAttributesVector), end(mAttributesVector),
+                        [&streamType](const auto &supportedAttr) {
+        return supportedAttr.mStream == streamType; }) != end(mAttributesVector);
+}
+
+void ProductStrategy::dump(String8 *dst, int spaces) const
+{
+    dst->appendFormat("\n%*s-%s (id: %d)\n", spaces, "", mName.c_str(), mId);
+    std::string deviceLiteral;
+    if (!OutputDeviceConverter::toString(mApplicableDevices, deviceLiteral)) {
+        ALOGE("%s: failed to convert device %d", __FUNCTION__, mApplicableDevices);
+    }
+    dst->appendFormat("%*sSelected Device: {type:%s, @:%s}\n", spaces + 2, "",
+                       deviceLiteral.c_str(), mDeviceAddress.c_str());
+
+    for (const auto &attr : mAttributesVector) {
+        dst->appendFormat("%*sGroup: %d stream: %s\n", spaces + 3, "", attr.mGroupId,
+                          android::toString(attr.mStream).c_str());
+        dst->appendFormat("%*s Attributes: ", spaces + 3, "");
+        std::string attStr =
+                attr.mAttributes == defaultAttr ? "{ Any }" : android::toString(attr.mAttributes);
+        dst->appendFormat("%s\n", attStr.c_str());
+    }
+}
+
+product_strategy_t ProductStrategyMap::getProductStrategyForAttributes(
+        const audio_attributes_t &attr) const
+{
+    for (const auto &iter : *this) {
+        if (iter.second->matches(attr)) {
+            return iter.second->getId();
+        }
+    }
+    ALOGV("%s: No matching product strategy for attributes %s, return default", __FUNCTION__,
+          toString(attr).c_str());
+    return getDefault();
+}
+
+audio_attributes_t ProductStrategyMap::getAttributesForStreamType(audio_stream_type_t stream) const
+{
+    for (const auto &iter : *this) {
+        const auto strategy = iter.second;
+        if (strategy->supportStreamType(stream)) {
+            return strategy->getAttributesForStreamType(stream);
+        }
+    }
+    ALOGV("%s: No product strategy for stream %s, using default", __FUNCTION__,
+          toString(stream).c_str());
+    return {};
+}
+
+audio_stream_type_t ProductStrategyMap::getStreamTypeForAttributes(
+        const audio_attributes_t &attr) const
+{
+    for (const auto &iter : *this) {
+        audio_stream_type_t stream = iter.second->getStreamTypeForAttributes(attr);
+        if (stream != AUDIO_STREAM_DEFAULT) {
+            return stream;
+        }
+    }
+    ALOGV("%s: No product strategy for attributes %s, using default (aka MUSIC)", __FUNCTION__,
+          toString(attr).c_str());
+    return  AUDIO_STREAM_MUSIC;
+}
+
+product_strategy_t ProductStrategyMap::getDefault() const
+{
+    for (const auto &iter : *this) {
+        if (iter.second->isDefault()) {
+            ALOGV("%s: using default %s", __FUNCTION__, iter.second->getName().c_str());
+            return iter.second->getId();
+        }
+    }
+    ALOGE("%s: No default product strategy defined", __FUNCTION__);
+    return PRODUCT_STRATEGY_NONE;
+}
+
+audio_attributes_t ProductStrategyMap::getAttributesForProductStrategy(
+        product_strategy_t strategy) const
+{
+    if (find(strategy) == end()) {
+        ALOGE("Invalid %d strategy requested", strategy);
+        return AUDIO_ATTRIBUTES_INITIALIZER;
+    }
+    return at(strategy)->getAudioAttributes()[0];
+}
+
+product_strategy_t ProductStrategyMap::getProductStrategyForStream(audio_stream_type_t stream) const
+{
+    for (const auto &iter : *this) {
+        if (iter.second->supportStreamType(stream)) {
+            return iter.second->getId();
+        }
+    }
+    ALOGV("%s: No product strategy for stream %d, using default", __FUNCTION__, stream);
+    return getDefault();
+}
+
+
+audio_devices_t ProductStrategyMap::getDeviceTypesForProductStrategy(
+        product_strategy_t strategy) const
+{
+    if (find(strategy) == end()) {
+        ALOGE("Invalid %d strategy requested, returning device for default strategy", strategy);
+        product_strategy_t defaultStrategy = getDefault();
+        if (defaultStrategy == PRODUCT_STRATEGY_NONE) {
+            return AUDIO_DEVICE_NONE;
+        }
+        return at(getDefault())->getDeviceTypes();
+    }
+    return at(strategy)->getDeviceTypes();
+}
+
+std::string ProductStrategyMap::getDeviceAddressForProductStrategy(product_strategy_t psId) const
+{
+    if (find(psId) == end()) {
+        ALOGE("Invalid %d strategy requested, returning device for default strategy", psId);
+        product_strategy_t defaultStrategy = getDefault();
+        if (defaultStrategy == PRODUCT_STRATEGY_NONE) {
+            return {};
+        }
+        return at(getDefault())->getDeviceAddress();
+    }
+    return at(psId)->getDeviceAddress();
+}
+
+void ProductStrategyMap::dump(String8 *dst, int spaces) const
+{
+    dst->appendFormat("%*sProduct Strategies dump:", spaces, "");
+    for (const auto &iter : *this) {
+        iter.second->dump(dst, spaces + 2);
+    }
+}
+
+}
+
diff --git a/services/audiopolicy/engine/config/Android.mk b/services/audiopolicy/engine/config/Android.mk
new file mode 100644
index 0000000..dbcd1bf
--- /dev/null
+++ b/services/audiopolicy/engine/config/Android.mk
@@ -0,0 +1,41 @@
+LOCAL_PATH := $(call my-dir)
+
+##################################################################
+# Component build
+##################################################################
+
+include $(CLEAR_VARS)
+
+LOCAL_EXPORT_C_INCLUDE_DIRS :=  $(LOCAL_PATH)/include
+
+LOCAL_C_INCLUDES := \
+    $(LOCAL_EXPORT_C_INCLUDE_DIRS) \
+    external/libxml2/include \
+    external/icu/icu4c/source/common
+
+LOCAL_SRC_FILES := \
+    src/EngineConfig.cpp
+
+LOCAL_CFLAGS += -Wall -Werror -Wextra
+
+LOCAL_SHARED_LIBRARIES := \
+    libparameter \
+    libmedia_helper \
+    libandroidicu \
+    libxml2 \
+    libutils \
+    liblog
+
+LOCAL_STATIC_LIBRARIES := \
+    libaudiopolicycomponents
+
+LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
+
+LOCAL_MODULE := libaudiopolicyengineconfig
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_HEADER_LIBRARIES := \
+    libaudio_system_headers \
+    libaudiopolicycommon
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/services/audiopolicy/engine/config/include/EngineConfig.h b/services/audiopolicy/engine/config/include/EngineConfig.h
new file mode 100644
index 0000000..64b9526
--- /dev/null
+++ b/services/audiopolicy/engine/config/include/EngineConfig.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 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 <system/audio.h>
+
+#include <string>
+#include <vector>
+#include <utils/Errors.h>
+
+struct _xmlNode;
+struct _xmlDoc;
+
+namespace android {
+namespace engineConfig {
+
+/** Default path of audio policy usages configuration file. */
+constexpr char DEFAULT_PATH[] = "/vendor/etc/audio_policy_engine_configuration.xml";
+
+/** Directories where the effect libraries will be search for. */
+constexpr const char* POLICY_USAGE_LIBRARY_PATH[] = {"/odm/etc/", "/vendor/etc/", "/system/etc/"};
+
+using AttributesVector = std::vector<audio_attributes_t>;
+using StreamVector = std::vector<audio_stream_type_t>;
+
+struct AttributesGroup {
+    std::string name;
+    audio_stream_type_t stream;
+    AttributesVector attributesVect;
+};
+
+using AttributesGroups = std::vector<AttributesGroup>;
+
+struct ProductStrategy {
+    std::string name;
+    AttributesGroups attributesGroups;
+};
+
+using ProductStrategies = std::vector<ProductStrategy>;
+
+struct Config {
+    float version;
+    ProductStrategies productStrategies;
+};
+
+/** Result of `parse(const char*)` */
+struct ParsingResult {
+    /** Parsed config, nullptr if the xml lib could not load the file */
+    std::unique_ptr<Config> parsedConfig;
+    size_t nbSkippedElement; //< Number of skipped invalid product strategies
+};
+
+/** Parses the provided audio policy usage configuration.
+ * @return audio policy usage @see Config
+ */
+ParsingResult parse(const char* path = DEFAULT_PATH);
+
+} // namespace engineConfig
+} // namespace android
diff --git a/services/audiopolicy/engine/config/src/EngineConfig.cpp b/services/audiopolicy/engine/config/src/EngineConfig.cpp
new file mode 100644
index 0000000..26dde66
--- /dev/null
+++ b/services/audiopolicy/engine/config/src/EngineConfig.cpp
@@ -0,0 +1,307 @@
+/*
+ * Copyright (C) 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 "APM::AudioPolicyEngine/Config"
+//#define LOG_NDEBUG 0
+
+#include "EngineConfig.h"
+#include <policy.h>
+#include <media/TypeConverter.h>
+#include <media/convert.h>
+#include <utils/Log.h>
+#include <libxml/parser.h>
+#include <libxml/xinclude.h>
+#include <string>
+#include <vector>
+#include <sstream>
+#include <istream>
+
+#include <cstdint>
+#include <string>
+
+
+namespace android {
+
+using utilities::convertTo;
+
+namespace engineConfig {
+
+static constexpr const char *gVersionAttribute = "version";
+static const char *const gReferenceElementName = "reference";
+static const char *const gReferenceAttributeName = "name";
+
+template<typename E, typename C>
+struct BaseSerializerTraits {
+    typedef E Element;
+    typedef C Collection;
+    typedef void* PtrSerializingCtx;
+};
+
+struct AttributesGroupTraits : public BaseSerializerTraits<AttributesGroup, AttributesGroups> {
+    static constexpr const char *tag = "AttributesGroup";
+    static constexpr const char *collectionTag = "AttributesGroups";
+
+    struct Attributes {
+        static constexpr const char *name = "name";
+        static constexpr const char *streamType = "streamType";
+    };
+    static android::status_t deserialize(_xmlDoc *doc, const _xmlNode *root, Collection &ps);
+};
+
+struct ProductStrategyTraits : public BaseSerializerTraits<ProductStrategy, ProductStrategies> {
+    static constexpr const char *tag = "ProductStrategy";
+    static constexpr const char *collectionTag = "ProductStrategies";
+
+    struct Attributes {
+        static constexpr const char *name = "name";
+    };
+    static android::status_t deserialize(_xmlDoc *doc, const _xmlNode *root, Collection &ps);
+};
+
+using xmlCharUnique = std::unique_ptr<xmlChar, decltype(xmlFree)>;
+
+std::string getXmlAttribute(const xmlNode *cur, const char *attribute)
+{
+    xmlCharUnique charPtr(xmlGetProp(cur, reinterpret_cast<const xmlChar *>(attribute)), xmlFree);
+    if (charPtr == NULL) {
+        return "";
+    }
+    std::string value(reinterpret_cast<const char*>(charPtr.get()));
+    return value;
+}
+
+static void getReference(const _xmlNode *root, const _xmlNode *&refNode, const std::string &refName,
+                         const char *collectionTag)
+{
+    for (root = root->xmlChildrenNode; root != NULL; root = root->next) {
+        if (!xmlStrcmp(root->name, (const xmlChar *)collectionTag)) {
+            for (xmlNode *cur = root->xmlChildrenNode; cur != NULL; cur = cur->next) {
+                if ((!xmlStrcmp(cur->name, (const xmlChar *)gReferenceElementName))) {
+                    std::string name = getXmlAttribute(cur, gReferenceAttributeName);
+                    if (refName == name) {
+                        refNode = cur;
+                        return;
+                    }
+                }
+            }
+        }
+    }
+    return;
+}
+
+template <class Trait>
+static status_t deserializeCollection(_xmlDoc *doc, const _xmlNode *cur,
+                                      typename Trait::Collection &collection,
+                                      size_t &nbSkippedElement)
+{
+    for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) {
+        if (xmlStrcmp(cur->name, (const xmlChar *)Trait::collectionTag) &&
+            xmlStrcmp(cur->name, (const xmlChar *)Trait::tag)) {
+            continue;
+        }
+        const xmlNode *child = cur;
+        if (!xmlStrcmp(child->name, (const xmlChar *)Trait::collectionTag)) {
+            child = child->xmlChildrenNode;
+        }
+        for (; child != NULL; child = child->next) {
+            if (!xmlStrcmp(child->name, (const xmlChar *)Trait::tag)) {
+                status_t status = Trait::deserialize(doc, child, collection);
+                if (status != NO_ERROR) {
+                    nbSkippedElement += 1;
+                }
+            }
+        }
+        if (!xmlStrcmp(cur->name, (const xmlChar *)Trait::tag)) {
+            return NO_ERROR;
+        }
+    }
+    return NO_ERROR;
+}
+
+static constexpr const char *attributesAttributeRef = "attributesRef"; /**< for factorization. */
+
+static status_t parseAttributes(const _xmlNode *cur, audio_attributes_t &attributes)
+{
+    for (; cur != NULL; cur = cur->next) {
+        if (!xmlStrcmp(cur->name, (const xmlChar *)("ContentType"))) {
+            std::string contentTypeXml = getXmlAttribute(cur, "value");
+            audio_content_type_t contentType;
+            if (not AudioContentTypeConverter::fromString(contentTypeXml.c_str(), contentType)) {
+                ALOGE("Invalid content type %s", contentTypeXml.c_str());
+                return BAD_VALUE;
+            }
+            attributes.content_type = contentType;
+            ALOGV("%s content type %s",  __FUNCTION__, contentTypeXml.c_str());
+        }
+        if (!xmlStrcmp(cur->name, (const xmlChar *)("Usage"))) {
+            std::string usageXml = getXmlAttribute(cur, "value");
+            audio_usage_t usage;
+            if (not UsageTypeConverter::fromString(usageXml.c_str(), usage)) {
+                ALOGE("Invalid usage %s", usageXml.c_str());
+                return BAD_VALUE;
+            }
+            attributes.usage = usage;
+            ALOGV("%s usage %s",  __FUNCTION__, usageXml.c_str());
+        }
+        if (!xmlStrcmp(cur->name, (const xmlChar *)("Flags"))) {
+            std::string flags = getXmlAttribute(cur, "value");
+
+            ALOGV("%s flags %s",  __FUNCTION__, flags.c_str());
+            attributes.flags = AudioFlagConverter::maskFromString(flags, " ");
+        }
+        if (!xmlStrcmp(cur->name, (const xmlChar *)("Bundle"))) {
+            std::string bundleKey = getXmlAttribute(cur, "key");
+            std::string bundleValue = getXmlAttribute(cur, "value");
+
+            ALOGV("%s Bundle %s %s",  __FUNCTION__, bundleKey.c_str(), bundleValue.c_str());
+
+            std::string tags(bundleKey + "=" + bundleValue);
+            std::strncpy(attributes.tags, tags.c_str(), AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1);
+        }
+    }
+    return NO_ERROR;
+}
+
+static status_t deserializeAttributes(_xmlDoc *doc, const _xmlNode *cur,
+                                      audio_attributes_t &attributes) {
+    // Retrieve content type, usage, flags, and bundle from xml
+    for (; cur != NULL; cur = cur->next) {
+        if (not xmlStrcmp(cur->name, (const xmlChar *)("Attributes"))) {
+            const xmlNode *attrNode = cur;
+            std::string attrRef = getXmlAttribute(cur, attributesAttributeRef);
+            if (!attrRef.empty()) {
+                getReference(xmlDocGetRootElement(doc), attrNode, attrRef, attributesAttributeRef);
+                if (attrNode == NULL) {
+                    ALOGE("%s: No reference found for %s", __FUNCTION__, attrRef.c_str());
+                    return BAD_VALUE;
+                }
+                return deserializeAttributes(doc, attrNode->xmlChildrenNode, attributes);
+            }
+            return parseAttributes(attrNode->xmlChildrenNode, attributes);
+        }
+        if (not xmlStrcmp(cur->name, (const xmlChar *)("ContentType")) ||
+                not xmlStrcmp(cur->name, (const xmlChar *)("Usage")) ||
+                not xmlStrcmp(cur->name, (const xmlChar *)("Flags")) ||
+                not xmlStrcmp(cur->name, (const xmlChar *)("Bundle"))) {
+            return parseAttributes(cur, attributes);
+        }
+    }
+    return BAD_VALUE;
+}
+
+static status_t deserializeAttributesCollection(_xmlDoc *doc, const _xmlNode *cur,
+                                                AttributesVector &collection)
+{
+    status_t ret = BAD_VALUE;
+    // Either we do provide only one attributes or a collection of supported attributes
+    for (cur = cur->xmlChildrenNode; cur != NULL; cur = cur->next) {
+        if (not xmlStrcmp(cur->name, (const xmlChar *)("Attributes")) ||
+                not xmlStrcmp(cur->name, (const xmlChar *)("ContentType")) ||
+                not xmlStrcmp(cur->name, (const xmlChar *)("Usage")) ||
+                not xmlStrcmp(cur->name, (const xmlChar *)("Flags")) ||
+                not xmlStrcmp(cur->name, (const xmlChar *)("Bundle"))) {
+            audio_attributes_t attributes = AUDIO_ATTRIBUTES_INITIALIZER;
+            ret = deserializeAttributes(doc, cur, attributes);
+            if (ret == NO_ERROR) {
+                collection.push_back(attributes);
+                // We are done if the "Attributes" balise is omitted, only one Attributes is allowed
+                if (xmlStrcmp(cur->name, (const xmlChar *)("Attributes"))) {
+                    return ret;
+                }
+            }
+        }
+    }
+    return ret;
+}
+
+status_t AttributesGroupTraits::deserialize(_xmlDoc *doc, const _xmlNode *child,
+                                            Collection &attributesGroup)
+{
+    std::string name = getXmlAttribute(child, Attributes::name);
+    if (name.empty()) {
+        ALOGV("AttributesGroupTraits No attribute %s found", Attributes::name);
+    }
+    ALOGV("%s: %s = %s", __FUNCTION__, Attributes::name, name.c_str());
+
+    audio_stream_type_t streamType = AUDIO_STREAM_DEFAULT;
+    std::string streamTypeXml = getXmlAttribute(child, Attributes::streamType);
+    if (streamTypeXml.empty()) {
+        ALOGV("%s: No attribute %s found", __FUNCTION__, Attributes::streamType);
+    } else {
+        ALOGV("%s: %s = %s", __FUNCTION__, Attributes::streamType, streamTypeXml.c_str());
+        if (not StreamTypeConverter::fromString(streamTypeXml.c_str(), streamType)) {
+            ALOGE("Invalid stream type %s", streamTypeXml.c_str());
+            return BAD_VALUE;
+        }
+    }
+    AttributesVector attributesVect;
+    deserializeAttributesCollection(doc, child, attributesVect);
+
+    attributesGroup.push_back({name, streamType, attributesVect});
+    return NO_ERROR;
+}
+
+status_t ProductStrategyTraits::deserialize(_xmlDoc *doc, const _xmlNode *child,
+                                            Collection &strategies)
+{
+    std::string name = getXmlAttribute(child, Attributes::name);
+    if (name.empty()) {
+        ALOGE("ProductStrategyTraits No attribute %s found", Attributes::name);
+        return BAD_VALUE;
+    }
+    ALOGV("%s: %s = %s", __FUNCTION__, Attributes::name, name.c_str());
+
+    size_t skipped = 0;
+    AttributesGroups attrGroups;
+    deserializeCollection<AttributesGroupTraits>(doc, child, attrGroups, skipped);
+
+    strategies.push_back({name, attrGroups});
+    return NO_ERROR;
+}
+
+ParsingResult parse(const char* path) {
+    xmlDocPtr doc;
+    doc = xmlParseFile(path);
+    if (doc == NULL) {
+        ALOGE("%s: Could not parse document %s", __FUNCTION__, path);
+        return {nullptr, 0};
+    }
+    xmlNodePtr cur = xmlDocGetRootElement(doc);
+    if (cur == NULL) {
+        ALOGE("%s: Could not parse: empty document %s", __FUNCTION__, path);
+        xmlFreeDoc(doc);
+        return {nullptr, 0};
+    }
+    if (xmlXIncludeProcess(doc) < 0) {
+        ALOGE("%s: libxml failed to resolve XIncludes on document %s", __FUNCTION__, path);
+        return {nullptr, 0};
+    }
+    std::string version = getXmlAttribute(cur, gVersionAttribute);
+    if (version.empty()) {
+        ALOGE("%s: No version found", __func__);
+        return {nullptr, 0};
+    }
+    size_t nbSkippedElements = 0;
+    auto config = std::make_unique<Config>();
+    config->version = std::stof(version);
+    deserializeCollection<ProductStrategyTraits>(
+                doc, cur, config->productStrategies, nbSkippedElements);
+
+    return {std::move(config), nbSkippedElements};
+}
+
+} // namespace engineConfig
+} // namespace android
diff --git a/services/audiopolicy/engine/interface/Android.bp b/services/audiopolicy/engine/interface/Android.bp
new file mode 100644
index 0000000..2ea42b6
--- /dev/null
+++ b/services/audiopolicy/engine/interface/Android.bp
@@ -0,0 +1,19 @@
+// Copyright (C) 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.
+
+cc_library_headers {
+    name: "libaudiopolicyengine_interface_headers",
+    host_supported: true,
+    export_include_dirs: ["."],
+}
diff --git a/services/audiopolicy/engine/interface/AudioPolicyManagerInterface.h b/services/audiopolicy/engine/interface/AudioPolicyManagerInterface.h
index 04594f5..9f5fb0c2 100644
--- a/services/audiopolicy/engine/interface/AudioPolicyManagerInterface.h
+++ b/services/audiopolicy/engine/interface/AudioPolicyManagerInterface.h
@@ -18,6 +18,8 @@
 
 #include <AudioPolicyManagerObserver.h>
 #include <RoutingStrategy.h>
+#include <media/AudioCommonTypes.h>
+#include <policy.h>
 #include <Volume.h>
 #include <HwModule.h>
 #include <DeviceDescriptor.h>
@@ -28,6 +30,10 @@
 
 namespace android {
 
+using DeviceStrategyMap = std::map<product_strategy_t, DeviceVector>;
+using StrategyVector = std::vector<product_strategy_t>;
+
+
 /**
  * This interface is dedicated to the policy manager that a Policy Engine shall implement.
  */
@@ -55,6 +61,8 @@
      * @param[in] inputSource to get the selected input device associated to
      *
      * @return selected input device for the given input source, may be none if error.
+     *
+     * @deprecated use getInputDeviceForAttributes
      */
     virtual audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const = 0;
 
@@ -64,6 +72,8 @@
      * @param[in] stream type for which the selected ouput device is requested.
      *
      * @return selected ouput device for the given strategy, may be none if error.
+     *
+     * @deprecated use getOutputDeviceForAttributes
      */
     virtual audio_devices_t getDeviceForStrategy(routing_strategy stategy) const = 0;
 
@@ -73,6 +83,9 @@
      * @param[in] stream: for which the selected strategy followed by is requested.
      *
      * @return strategy to be followed.
+     *
+     * @deprecated use getOrderedStreams() / getLinkedStreams() to apply operation on stream
+     * following same former routing_strategy
      */
     virtual routing_strategy getStrategyForStream(audio_stream_type_t stream) = 0;
 
@@ -82,6 +95,8 @@
      * @param[in] usage to get the selected strategy followed by.
      *
      * @return strategy to be followed.
+     *
+     * @deprecated use getProductStrategyForAttributes
      */
     virtual routing_strategy getStrategyForUsage(audio_usage_t usage) = 0;
 
@@ -133,6 +148,130 @@
     virtual status_t setDeviceConnectionState(const android::sp<android::DeviceDescriptor> devDesc,
                                               audio_policy_dev_state_t state) = 0;
 
+    /**
+     * Get the strategy selected for a given audio attributes.
+     *
+     * @param[in] audio attributes to get the selected @product_strategy_t followed by.
+     *
+     * @return @product_strategy_t to be followed.
+     */
+    virtual product_strategy_t getProductStrategyForAttributes(
+            const audio_attributes_t &attr) const = 0;
+
+    /**
+     * @brief getOutputDevicesForAttributes retrieves the devices to be used for given
+     * audio attributes.
+     * @param attributes of the output requesting Device(s) selection
+     * @param preferedDevice valid reference if a prefered device is requested, nullptr otherwise.
+     * @param fromCache if true, the device is returned from internal cache,
+     *                  otherwise it is determined by current state (device connected,phone state,
+     *                  force use, a2dp output...)
+     * @return vector of selected device descriptors.
+     *         Appropriate device for streams handled by the specified audio attributes according
+     *         to current phone state, forced states, connected devices...
+     *         if fromCache is true, the device is returned from internal cache,
+     *         otherwise it is determined by current state (device connected,phone state, force use,
+     *         a2dp output...)
+     * This allows to:
+     *      1 speed up process when the state is stable (when starting or stopping an output)
+     *      2 access to either current device selection (fromCache == true) or
+     *      "future" device selection (fromCache == false) when called from a context
+     *      where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND
+     *      before manager updates its outputs.
+     */
+    virtual DeviceVector getOutputDevicesForAttributes(
+            const audio_attributes_t &attributes,
+            const sp<DeviceDescriptor> &preferedDevice = nullptr,
+            bool fromCache = false) const = 0;
+
+    /**
+     * @brief getOutputDevicesForStream Legacy function retrieving devices from a stream type.
+     * @param stream type of the output requesting Device(s) selection
+     * @param fromCache if true, the device is returned from internal cache,
+     *                  otherwise it is determined by current state (device connected,phone state,
+     *                  force use, a2dp output...)
+     * @return appropriate device for streams handled by the specified audio attributes according
+     *         to current phone state, forced states, connected devices...
+     *         if fromCache is true, the device is returned from internal cache,
+     *         otherwise it is determined by current state (device connected,phone state, force use,
+     *         a2dp output...)
+     * This allows to:
+     *      1 speed up process when the state is stable (when starting or stopping an output)
+     *      2 access to either current device selection (fromCache == true) or
+     *      "future" device selection (fromCache == false) when called from a context
+     *      where conditions are changing (setDeviceConnectionState(), setPhoneState()...) AND
+     *      before manager updates its outputs.
+     */
+    virtual DeviceVector getOutputDevicesForStream(audio_stream_type_t stream,
+                                                   bool fromCache = false) const = 0;
+
+    /**
+     * Get the input device selected for given audio attributes.
+     *
+     * @param[in] attr audio attributes to consider
+     * @param[out] mix to be used if a mix has been installed for the given audio attributes.
+     * @return selected input device for the audio attributes, may be null if error.
+     */
+    virtual sp<DeviceDescriptor> getInputDeviceForAttributes(
+            const audio_attributes_t &attr, AudioMix **mix = nullptr) const = 0;
+
+    /**
+     * Get the legacy stream type for a given audio attributes.
+     *
+     * @param[in] audio attributes to get the associated audio_stream_type_t.
+     *
+     * @return audio_stream_type_t associated to the attributes.
+     */
+    virtual audio_stream_type_t getStreamTypeForAttributes(
+            const audio_attributes_t &attr) const = 0;
+
+    /**
+     * @brief getAttributesForStream get the audio attributes from legacy stream type
+     * @param stream to consider
+     * @return audio attributes matching the legacy stream type
+     */
+    virtual audio_attributes_t getAttributesForStreamType(audio_stream_type_t stream) const = 0;
+
+    /**
+     * @brief getStreamTypesForProductStrategy retrieves the list of legacy stream type following
+     * the given product strategy
+     * @param ps product strategy to consider
+     * @return associated legacy Stream Types vector of the given product strategy
+     */
+    virtual StreamTypeVector getStreamTypesForProductStrategy(product_strategy_t ps) const = 0;
+
+    /**
+     * @brief getAllAttributesForProductStrategy retrieves all the attributes following the given
+     * product strategy. Any attributes that "matches" with this one will follow the product
+     * strategy.
+     * "matching" means the usage shall match if reference attributes has a defined usage, AND
+     * content type shall match if reference attributes has a defined content type AND
+     * flags shall match if reference attributes has defined flags AND
+     * tags shall match if reference attributes has defined tags.
+     * @param ps product strategy to consider
+     * @return vector of product strategy ids, empty if unknown strategy.
+     */
+    virtual AttributesVector getAllAttributesForProductStrategy(product_strategy_t ps) const = 0;
+
+    /**
+     * @brief getOrderedAudioProductStrategies
+     * @return priority ordered product strategies to help the AudioPolicyManager evaluating the
+     * device selection per output according to the prioritized strategies.
+     */
+    virtual StrategyVector getOrderedProductStrategies() const = 0;
+
+    /**
+     * @brief updateDeviceSelectionCache. Device selection for AudioAttribute / Streams is cached
+     * in the engine in order to speed up process when the audio system is stable.
+     * When a device is connected, the android mode is changed, engine is notified and can update
+     * the cache.
+     * When starting / stopping an output with a stream that can affect notification, the engine
+     * needs to update the cache upon this function call.
+     */
+    virtual void updateDeviceSelectionCache() = 0;
+
+    virtual void dump(String8 *dst) const = 0;
+
 protected:
     virtual ~AudioPolicyManagerInterface() {}
 };
diff --git a/services/audiopolicy/engineconfigurable/Android.mk b/services/audiopolicy/engineconfigurable/Android.mk
index c2105e9..df813cb 100644
--- a/services/audiopolicy/engineconfigurable/Android.mk
+++ b/services/audiopolicy/engineconfigurable/Android.mk
@@ -14,11 +14,12 @@
     src/Strategy.cpp \
     src/Usage.cpp \
     src/InputSource.cpp \
+    ../engine/common/src/ProductStrategy.cpp \
+    ../engine/common/src/EngineBase.cpp
 
 audio_policy_engine_includes_common := \
     frameworks/av/services/audiopolicy/engineconfigurable/include \
-    frameworks/av/services/audiopolicy/engineconfigurable/interface \
-    frameworks/av/services/audiopolicy/engine/interface
+    frameworks/av/services/audiopolicy/engineconfigurable/interface
 
 LOCAL_CFLAGS += \
     -Wall \
@@ -32,8 +33,12 @@
     $(audio_policy_engine_includes_common) \
     $(TARGET_OUT_HEADERS)/hw \
     $(call include-path-for, frameworks-av) \
-    $(call include-path-for, audio-utils) \
-    frameworks/av/services/audiopolicy/common/include
+    $(call include-path-for, audio-utils)
+
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon \
+    libaudiopolicyengine_common_headers \
+    libaudiopolicyengine_interface_headers
 
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
@@ -45,8 +50,8 @@
     libaudiopolicycomponents
 
 LOCAL_SHARED_LIBRARIES := \
+    libaudiopolicyengineconfig \
     liblog \
-    libcutils \
     libutils \
     liblog \
     libaudioutils \
diff --git a/services/audiopolicy/engineconfigurable/parameter-framework/plugin/Android.mk b/services/audiopolicy/engineconfigurable/parameter-framework/plugin/Android.mk
index db1f038..a37db1e 100644
--- a/services/audiopolicy/engineconfigurable/parameter-framework/plugin/Android.mk
+++ b/services/audiopolicy/engineconfigurable/parameter-framework/plugin/Android.mk
@@ -21,7 +21,6 @@
     -fvisibility=hidden
 
 LOCAL_C_INCLUDES := \
-    frameworks/av/services/audiopolicy/common/include \
     frameworks/av/services/audiopolicy/engineconfigurable/include \
     frameworks/av/services/audiopolicy/engineconfigurable/interface \
 
@@ -31,6 +30,9 @@
     libmedia_helper \
     liblog \
 
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon
+
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
 LOCAL_STATIC_LIBRARIES := libpfw_utility
diff --git a/services/audiopolicy/engineconfigurable/src/Engine.cpp b/services/audiopolicy/engineconfigurable/src/Engine.cpp
index 009cf90..815de25 100644
--- a/services/audiopolicy/engineconfigurable/src/Engine.cpp
+++ b/services/audiopolicy/engineconfigurable/src/Engine.cpp
@@ -29,6 +29,8 @@
 #include "Stream.h"
 #include "InputSource.h"
 #include "Usage.h"
+
+#include <EngineConfig.h>
 #include <policy.h>
 #include <ParameterManagerWrapper.h>
 
@@ -80,12 +82,12 @@
     return mInputSourceCollection;
 }
 
-Engine::Engine()
-    : mManagerInterface(this),
-      mPluginInterface(this),
-      mPolicyParameterMgr(new ParameterManagerWrapper()),
-      mApmObserver(NULL)
+Engine::Engine() : mPolicyParameterMgr(new ParameterManagerWrapper())
 {
+    status_t loadResult = loadAudioPolicyEngineConfig();
+    if (loadResult < 0) {
+        ALOGE("Policy Engine configuration is invalid.");
+    }
 }
 
 Engine::~Engine()
@@ -96,20 +98,13 @@
     mUsageCollection.clear();
 }
 
-
-void Engine::setObserver(AudioPolicyManagerObserver *observer)
-{
-    ALOG_ASSERT(observer != NULL, "Invalid Audio Policy Manager observer");
-    mApmObserver = observer;
-}
-
 status_t Engine::initCheck()
 {
-    if (mPolicyParameterMgr == NULL || mPolicyParameterMgr->start() != NO_ERROR) {
+    if (mPolicyParameterMgr == nullptr || mPolicyParameterMgr->start() != NO_ERROR) {
         ALOGE("%s: could not start Policy PFW", __FUNCTION__);
         return NO_INIT;
     }
-    return (mApmObserver != NULL)? NO_ERROR : NO_INIT;
+    return EngineBase::initCheck();
 }
 
 template <typename Key>
@@ -137,14 +132,14 @@
     return element->template get<Property>();
 }
 
-routing_strategy Engine::ManagerInterfaceImpl::getStrategyForUsage(audio_usage_t usage)
+routing_strategy Engine::getStrategyForUsage(audio_usage_t usage)
 {
-    return mPolicyEngine->getPropertyForKey<routing_strategy, audio_usage_t>(usage);
+    return getPropertyForKey<routing_strategy, audio_usage_t>(usage);
 }
 
-audio_devices_t Engine::ManagerInterfaceImpl::getDeviceForStrategy(routing_strategy strategy) const
+audio_devices_t Engine::getDeviceForStrategy(routing_strategy strategy) const
 {
-    const SwAudioOutputCollection &outputs = mPolicyEngine->mApmObserver->getOutputs();
+    const SwAudioOutputCollection &outputs = getApmObserver()->getOutputs();
 
     /** This is the only case handled programmatically because the PFW is unable to know the
      * activity of streams.
@@ -161,31 +156,28 @@
             !outputs.isStreamActiveRemotely(AUDIO_STREAM_MUSIC,
                                     SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY) &&
             outputs.isStreamActive(AUDIO_STREAM_MUSIC, SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
-        return mPolicyEngine->getPropertyForKey<audio_devices_t, routing_strategy>(STRATEGY_MEDIA);
+        return getPropertyForKey<audio_devices_t, routing_strategy>(STRATEGY_MEDIA);
     }
     if (strategy == STRATEGY_ACCESSIBILITY &&
         (outputs.isStreamActive(AUDIO_STREAM_RING) || outputs.isStreamActive(AUDIO_STREAM_ALARM))) {
             // do not route accessibility prompts to a digital output currently configured with a
             // compressed format as they would likely not be mixed and dropped.
             // Device For Sonification conf file has HDMI, SPDIF and HDMI ARC unreacheable.
-        return mPolicyEngine->getPropertyForKey<audio_devices_t, routing_strategy>(
-                    STRATEGY_SONIFICATION);
+        return getPropertyForKey<audio_devices_t, routing_strategy>(STRATEGY_SONIFICATION);
     }
-    return mPolicyEngine->getPropertyForKey<audio_devices_t, routing_strategy>(strategy);
+    return getPropertyForKey<audio_devices_t, routing_strategy>(strategy);
 }
 
-bool Engine::PluginInterfaceImpl::setVolumeProfileForStream(const audio_stream_type_t &stream,
-                                                            const audio_stream_type_t &profile)
+bool Engine::setVolumeProfileForStream(const audio_stream_type_t &stream,
+                                       const audio_stream_type_t &profile)
 {
-    if (mPolicyEngine->setPropertyForKey<audio_stream_type_t, audio_stream_type_t>(stream,
-                                                                                   profile)) {
-        mPolicyEngine->mApmObserver->getVolumeCurves().switchVolumeCurve(profile, stream);
+    if (setPropertyForKey<audio_stream_type_t, audio_stream_type_t>(stream, profile)) {
+        getApmObserver()->getVolumeCurves().switchVolumeCurve(profile, stream);
         return true;
     }
     return false;
 }
 
-
 template <typename Property, typename Key>
 bool Engine::setPropertyForKey(const Property &property, const Key &key)
 {
@@ -199,7 +191,11 @@
 
 status_t Engine::setPhoneState(audio_mode_t mode)
 {
-    return mPolicyParameterMgr->setPhoneState(mode);
+    status_t status = mPolicyParameterMgr->setPhoneState(mode);
+    if (status != NO_ERROR) {
+        return status;
+    }
+    return EngineBase::setPhoneState(mode);
 }
 
 audio_mode_t Engine::getPhoneState() const
@@ -210,7 +206,11 @@
 status_t Engine::setForceUse(audio_policy_force_use_t usage,
                                       audio_policy_forced_cfg_t config)
 {
-    return mPolicyParameterMgr->setForceUse(usage, config);
+    status_t status = mPolicyParameterMgr->setForceUse(usage, config);
+    if (status != NO_ERROR) {
+        return status;
+    }
+    return EngineBase::setForceUse(usage, config);
 }
 
 audio_policy_forced_cfg_t Engine::getForceUse(audio_policy_force_use_t usage) const
@@ -225,24 +225,144 @@
 
     if (audio_is_output_device(devDesc->type())) {
         return mPolicyParameterMgr->setAvailableOutputDevices(
-                    mApmObserver->getAvailableOutputDevices().types());
+                    getApmObserver()->getAvailableOutputDevices().types());
     } else if (audio_is_input_device(devDesc->type())) {
         return mPolicyParameterMgr->setAvailableInputDevices(
-                    mApmObserver->getAvailableInputDevices().types());
+                    getApmObserver()->getAvailableInputDevices().types());
     }
     return BAD_TYPE;
 }
 
+status_t Engine::loadAudioPolicyEngineConfig()
+{
+    auto result = EngineBase::loadAudioPolicyEngineConfig();
+
+    return result.nbSkippedElement == 0? NO_ERROR : BAD_VALUE;
+}
+
+DeviceVector Engine::getDevicesForProductStrategy(product_strategy_t ps) const
+{
+    const auto productStrategies = getProductStrategies();
+    if (productStrategies.find(ps) == productStrategies.end()) {
+        ALOGE("%s: Trying to get device on invalid strategy %d", __FUNCTION__, ps);
+        return {};
+    }
+    const DeviceVector &availableOutputDevices = getApmObserver()->getAvailableOutputDevices();
+    const SwAudioOutputCollection &outputs = getApmObserver()->getOutputs();
+    uint32_t availableOutputDevicesType = availableOutputDevices.types();
+
+    /** This is the only case handled programmatically because the PFW is unable to know the
+     * activity of streams.
+     *
+     * -While media is playing on a remote device, use the the sonification behavior.
+     * Note that we test this usecase before testing if media is playing because
+     * the isStreamActive() method only informs about the activity of a stream, not
+     * if it's for local playback. Note also that we use the same delay between both tests
+     *
+     * -When media is not playing anymore, fall back on the sonification behavior
+     */
+    audio_devices_t devices = AUDIO_DEVICE_NONE;
+    if (ps == getProductStrategyForStream(AUDIO_STREAM_NOTIFICATION) &&
+            !is_state_in_call(getPhoneState()) &&
+            !outputs.isStreamActiveRemotely(AUDIO_STREAM_MUSIC,
+                                            SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY) &&
+            outputs.isStreamActive(AUDIO_STREAM_MUSIC,
+                                   SONIFICATION_RESPECTFUL_AFTER_MUSIC_DELAY)) {
+        product_strategy_t strategyForMedia =
+                getProductStrategyForStream(AUDIO_STREAM_MUSIC);
+        devices = productStrategies.getDeviceTypesForProductStrategy(strategyForMedia);
+    } else if (ps == getProductStrategyForStream(AUDIO_STREAM_ACCESSIBILITY) &&
+        (outputs.isStreamActive(AUDIO_STREAM_RING) ||
+         outputs.isStreamActive(AUDIO_STREAM_ALARM))) {
+            // do not route accessibility prompts to a digital output currently configured with a
+            // compressed format as they would likely not be mixed and dropped.
+            // Device For Sonification conf file has HDMI, SPDIF and HDMI ARC unreacheable.
+        product_strategy_t strategyNotification = getProductStrategyForStream(AUDIO_STREAM_RING);
+        devices = productStrategies.getDeviceTypesForProductStrategy(strategyNotification);
+    } else {
+        devices = productStrategies.getDeviceTypesForProductStrategy(ps);
+    }
+    if (devices == AUDIO_DEVICE_NONE ||
+            (devices & availableOutputDevicesType) == AUDIO_DEVICE_NONE) {
+        devices = getApmObserver()->getDefaultOutputDevice()->type();
+        ALOGE_IF(devices == AUDIO_DEVICE_NONE, "%s: no valid default device defined", __FUNCTION__);
+        return DeviceVector(getApmObserver()->getDefaultOutputDevice());
+    }
+    if (/*device_distinguishes_on_address(devices)*/ devices == AUDIO_DEVICE_OUT_BUS) {
+        // We do expect only one device for these types of devices
+        // Criterion device address garantee this one is available
+        // If this criterion is not wished, need to ensure this device is available
+        const String8 address(productStrategies.getDeviceAddressForProductStrategy(ps).c_str());
+        ALOGV("%s:device 0x%x %s %d", __FUNCTION__, devices, address.c_str(), ps);
+        return DeviceVector(availableOutputDevices.getDevice(devices,
+                                                             address,
+                                                             AUDIO_FORMAT_DEFAULT));
+    }
+    ALOGV("%s:device 0x%x %d", __FUNCTION__, devices, ps);
+    return availableOutputDevices.getDevicesFromTypeMask(devices);
+}
+
+DeviceVector Engine::getOutputDevicesForAttributes(const audio_attributes_t &attributes,
+                                                   const sp<DeviceDescriptor> &preferredDevice,
+                                                   bool fromCache) const
+{
+    // First check for explict routing device
+    if (preferredDevice != nullptr) {
+        ALOGV("%s explicit Routing on device %s", __func__, preferredDevice->toString().c_str());
+        return DeviceVector(preferredDevice);
+    }
+    product_strategy_t strategy = EngineBase::getProductStrategyForAttributes(attributes);
+    //
+    // @TODO: manage dynamic mix
+    //
+    return fromCache? mDevicesForStrategies.at(strategy) : getDevicesForProductStrategy(strategy);
+}
+
+DeviceVector Engine::getOutputDevicesForStream(audio_stream_type_t stream, bool fromCache) const
+{
+    auto attributes = EngineBase::getAttributesForStreamType(stream);
+    return getOutputDevicesForAttributes(attributes, nullptr, fromCache);
+}
+
+sp<DeviceDescriptor> Engine::getInputDeviceForAttributes(const audio_attributes_t &attr,
+                                                         AudioMix **/*mix*/) const
+{
+    const auto &availInputDevices = getApmObserver()->getAvailableInputDevices();
+    std::string address;
+    //
+    // @TODO: manage explicit routing and dynamic mix
+    //
+    audio_devices_t deviceType = getPropertyForKey<audio_devices_t, audio_source_t>(attr.source);
+
+    if (audio_is_remote_submix_device(deviceType)) {
+        address = "0";
+        std::size_t pos;
+        std::string tags { attr.tags };
+        if ((pos = tags.find("addr=")) != std::string::npos) {
+            address = tags.substr(pos + std::strlen("addr="));
+        }
+    }
+    return availInputDevices.getDevice(deviceType, String8(address.c_str()), AUDIO_FORMAT_DEFAULT);
+}
+
+void Engine::updateDeviceSelectionCache()
+{
+    for (const auto &iter : getProductStrategies()) {
+        const auto &strategy = iter.second;
+        mDevicesForStrategies[strategy->getId()] = getDevicesForProductStrategy(strategy->getId());
+    }
+}
+
 template <>
 AudioPolicyManagerInterface *Engine::queryInterface()
 {
-    return &mManagerInterface;
+    return this;
 }
 
 template <>
 AudioPolicyPluginInterface *Engine::queryInterface()
 {
-    return &mPluginInterface;
+    return this;
 }
 
 } // namespace audio_policy
diff --git a/services/audiopolicy/engineconfigurable/src/Engine.h b/services/audiopolicy/engineconfigurable/src/Engine.h
index ba4f889..aebf27d 100644
--- a/services/audiopolicy/engineconfigurable/src/Engine.h
+++ b/services/audiopolicy/engineconfigurable/src/Engine.h
@@ -16,7 +16,7 @@
 
 #pragma once
 
-
+#include "EngineBase.h"
 #include <AudioPolicyManagerInterface.h>
 #include <AudioPolicyPluginInterface.h>
 #include "Collection.h"
@@ -29,7 +29,7 @@
 class ParameterManagerWrapper;
 class VolumeProfile;
 
-class Engine
+class Engine : public EngineBase, AudioPolicyPluginInterface
 {
 public:
     Engine();
@@ -38,129 +38,93 @@
     template <class RequestedInterface>
     RequestedInterface *queryInterface();
 
-private:
-    /// Interface members
-    class ManagerInterfaceImpl : public AudioPolicyManagerInterface
+    ///
+    /// from EngineBase
+    ///
+    android::status_t initCheck() override;
+
+    audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const override
     {
-    public:
-        ManagerInterfaceImpl(Engine *policyEngine)
-            : mPolicyEngine(policyEngine) {}
+        return getPropertyForKey<audio_devices_t, audio_source_t>(inputSource);
+    }
 
-        virtual android::status_t initCheck()
-        {
-            return mPolicyEngine->initCheck();
-        }
-        virtual void setObserver(AudioPolicyManagerObserver *observer)
-        {
-            mPolicyEngine->setObserver(observer);
-        }
-        virtual audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const
-        {
-            return mPolicyEngine->getPropertyForKey<audio_devices_t, audio_source_t>(inputSource);
-        }
-        virtual audio_devices_t getDeviceForStrategy(routing_strategy stategy) const;
-        virtual routing_strategy getStrategyForStream(audio_stream_type_t stream)
-        {
-            return mPolicyEngine->getPropertyForKey<routing_strategy, audio_stream_type_t>(stream);
-        }
-        virtual routing_strategy getStrategyForUsage(audio_usage_t usage);
-        virtual status_t setPhoneState(audio_mode_t mode)
-        {
-            return mPolicyEngine->setPhoneState(mode);
-        }
-        virtual audio_mode_t getPhoneState() const
-        {
-            return mPolicyEngine->getPhoneState();
-        }
-        virtual status_t setForceUse(audio_policy_force_use_t usage,
-                                              audio_policy_forced_cfg_t config)
-        {
-            return mPolicyEngine->setForceUse(usage, config);
-        }
-        virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const
-        {
-            return mPolicyEngine->getForceUse(usage);
-        }
-        virtual android::status_t setDeviceConnectionState(const sp<DeviceDescriptor> devDesc,
-                                                           audio_policy_dev_state_t state)
-        {
-            return mPolicyEngine->setDeviceConnectionState(devDesc, state);
-        }
+    audio_devices_t getDeviceForStrategy(routing_strategy stategy) const override;
 
-    private:
-        Engine *mPolicyEngine;
-    } mManagerInterface;
-
-    class PluginInterfaceImpl : public AudioPolicyPluginInterface
+    routing_strategy getStrategyForStream(audio_stream_type_t stream) override
     {
-    public:
-        PluginInterfaceImpl(Engine *policyEngine)
-            : mPolicyEngine(policyEngine) {}
+        return getPropertyForKey<routing_strategy, audio_stream_type_t>(stream);
+    }
 
-        virtual status_t addStrategy(const std::string &name, routing_strategy strategy)
-        {
-            return mPolicyEngine->add<routing_strategy>(name, strategy);
-        }
-        virtual status_t addStream(const std::string &name, audio_stream_type_t stream)
-        {
-            return mPolicyEngine->add<audio_stream_type_t>(name, stream);
-        }
-        virtual status_t addUsage(const std::string &name, audio_usage_t usage)
-        {
-            return mPolicyEngine->add<audio_usage_t>(name, usage);
-        }
-        virtual status_t addInputSource(const std::string &name, audio_source_t source)
-        {
-            return mPolicyEngine->add<audio_source_t>(name, source);
-        }
-        virtual bool setDeviceForStrategy(const routing_strategy &strategy, audio_devices_t devices)
-        {
-            return mPolicyEngine->setPropertyForKey<audio_devices_t, routing_strategy>(devices,
-                                                                                       strategy);
-        }
-        virtual bool setStrategyForStream(const audio_stream_type_t &stream,
-                                          routing_strategy strategy)
-        {
-            return mPolicyEngine->setPropertyForKey<routing_strategy, audio_stream_type_t>(strategy,
-                                                                                           stream);
-        }
-        virtual bool setVolumeProfileForStream(const audio_stream_type_t &stream,
-                                               const audio_stream_type_t &volumeProfile);
+    routing_strategy getStrategyForUsage(audio_usage_t usage) override;
 
-        virtual bool setStrategyForUsage(const audio_usage_t &usage, routing_strategy strategy)
-        {
-            return mPolicyEngine->setPropertyForKey<routing_strategy, audio_usage_t>(strategy,
-                                                                                     usage);
-        }
-        virtual bool setDeviceForInputSource(const audio_source_t &inputSource,
-                                             audio_devices_t device)
-        {
-            return mPolicyEngine->setPropertyForKey<audio_devices_t, audio_source_t>(device,
-                                                                                     inputSource);
-        }
+    status_t setPhoneState(audio_mode_t mode) override;
 
-    private:
-        Engine *mPolicyEngine;
-    } mPluginInterface;
+    audio_mode_t getPhoneState() const override;
+
+    status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) override;
+
+    audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const override;
+
+    android::status_t setDeviceConnectionState(const sp<DeviceDescriptor> devDesc,
+                                               audio_policy_dev_state_t state) override;
+
+    DeviceVector getOutputDevicesForAttributes(const audio_attributes_t &attr,
+                                               const sp<DeviceDescriptor> &preferedDevice = nullptr,
+                                               bool fromCache = false) const override;
+
+    DeviceVector getOutputDevicesForStream(audio_stream_type_t stream,
+                                           bool fromCache = false) const override;
+
+    sp<DeviceDescriptor> getInputDeviceForAttributes(
+            const audio_attributes_t &attr, AudioMix **mix = nullptr) const override;
+
+    void updateDeviceSelectionCache() override;
+
+    ///
+    /// from AudioPolicyPluginInterface
+    ///
+    status_t addStrategy(const std::string &name, routing_strategy strategy) override
+    {
+        return add<routing_strategy>(name, strategy);
+    }
+    status_t addStream(const std::string &name, audio_stream_type_t stream) override
+    {
+        return add<audio_stream_type_t>(name, stream);
+    }
+    status_t addUsage(const std::string &name, audio_usage_t usage) override
+    {
+        return add<audio_usage_t>(name, usage);
+    }
+    status_t addInputSource(const std::string &name, audio_source_t source) override
+    {
+        return add<audio_source_t>(name, source);
+    }
+    bool setDeviceForStrategy(const routing_strategy &strategy, audio_devices_t devices) override
+    {
+        return setPropertyForKey<audio_devices_t, routing_strategy>(devices, strategy);
+    }
+    bool setStrategyForStream(const audio_stream_type_t &stream,
+                              routing_strategy strategy) override
+    {
+        return setPropertyForKey<routing_strategy, audio_stream_type_t>(strategy, stream);
+    }
+    bool setVolumeProfileForStream(const audio_stream_type_t &stream,
+                                   const audio_stream_type_t &volumeProfile) override;
+
+    bool setStrategyForUsage(const audio_usage_t &usage, routing_strategy strategy) override
+    {
+        return setPropertyForKey<routing_strategy, audio_usage_t>(strategy, usage);
+    }
+    bool setDeviceForInputSource(const audio_source_t &inputSource, audio_devices_t device) override
+    {
+        return setPropertyForKey<audio_devices_t, audio_source_t>(device, inputSource);
+    }
 
 private:
     /* Copy facilities are put private to disable copy. */
     Engine(const Engine &object);
     Engine &operator=(const Engine &object);
 
-    void setObserver(AudioPolicyManagerObserver *observer);
-
-    bool setVolumeProfileForStream(const audio_stream_type_t &stream,
-                                   device_category deviceCategory,
-                                   const VolumeCurvePoints &points);
-
-    status_t initCheck();
-    status_t setPhoneState(audio_mode_t mode);
-    audio_mode_t getPhoneState() const;
-    status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
-    audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const;
-    status_t setDeviceConnectionState(const sp<DeviceDescriptor> devDesc,
-                                      audio_policy_dev_state_t state);
     StrategyCollection mStrategyCollection; /**< Strategies indexed by their enum id. */
     StreamCollection mStreamCollection; /**< Streams indexed by their enum id.  */
     UsageCollection mUsageCollection; /**< Usages indexed by their enum id. */
@@ -184,12 +148,16 @@
     template <typename Property, typename Key>
     bool setPropertyForKey(const Property &property, const Key &key);
 
+    status_t loadAudioPolicyEngineConfig();
+
+    DeviceVector getDevicesForProductStrategy(product_strategy_t strategy) const;
+
     /**
      * Policy Parameter Manager hidden through a wrapper.
      */
     ParameterManagerWrapper *mPolicyParameterMgr;
 
-    AudioPolicyManagerObserver *mApmObserver;
+    DeviceStrategyMap mDevicesForStrategies;
 };
 
 } // namespace audio_policy
diff --git a/services/audiopolicy/engineconfigurable/tools/provision_criterion_types_from_android_headers.mk b/services/audiopolicy/engineconfigurable/tools/provision_criterion_types_from_android_headers.mk
index 4814376..eebdfd6 100644
--- a/services/audiopolicy/engineconfigurable/tools/provision_criterion_types_from_android_headers.mk
+++ b/services/audiopolicy/engineconfigurable/tools/provision_criterion_types_from_android_headers.mk
@@ -8,7 +8,6 @@
 $(LOCAL_BUILT_MODULE): MY_AUDIO_POLICY_CONFIGURATION_FILE := $(AUDIO_POLICY_CONFIGURATION_FILE)
 $(LOCAL_BUILT_MODULE): MY_CRITERION_TOOL := $(HOST_OUT)/bin/buildPolicyCriterionTypes.py
 $(LOCAL_BUILT_MODULE): $(LOCAL_REQUIRED_MODULES) $(LOCAL_ADDITIONAL_DEPENDENCIES) \
-    buildPolicyCriterionTypes.py \
     $(CRITERION_TYPES_FILE) \
     $(ANDROID_AUDIO_BASE_HEADER_FILE)
 
diff --git a/services/audiopolicy/engineconfigurable/wrapper/Android.mk b/services/audiopolicy/engineconfigurable/wrapper/Android.mk
index d19a364..b71a53c 100644
--- a/services/audiopolicy/engineconfigurable/wrapper/Android.mk
+++ b/services/audiopolicy/engineconfigurable/wrapper/Android.mk
@@ -14,6 +14,7 @@
     frameworks/av/services/audiopolicy/engineconfigurable/include \
     frameworks/av/services/audiopolicy/engineconfigurable/interface \
     frameworks/av/services/audiopolicy/common/include \
+    frameworks/av/services/audiopolicy/utilities/convert \
     external/libxml2/include \
     external/icu/icu4c/source/common
 
@@ -27,6 +28,9 @@
     libicuuc \
     libxml2
 
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon
+
 LOCAL_STATIC_LIBRARIES := \
     libaudiopolicycomponents
 
diff --git a/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp b/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp
index 09faa4c..a3f341f 100644
--- a/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp
+++ b/services/audiopolicy/engineconfigurable/wrapper/ParameterManagerWrapper.cpp
@@ -289,7 +289,7 @@
     std::string criterionName = audio_is_output_device(devDesc->type()) ?
                 gOutputDeviceAddressCriterionName : gInputDeviceAddressCriterionName;
 
-    ALOGV("%s: device with address %s %s", __FUNCTION__, devDesc->mAddress.string(),
+    ALOGV("%s: device with address %s %s", __FUNCTION__, devDesc->address().string(),
           state != AUDIO_POLICY_DEVICE_STATE_AVAILABLE? "disconnected" : "connected");
     ISelectionCriterionInterface *criterion =
             getElement<ISelectionCriterionInterface>(criterionName, mPolicyCriteria);
diff --git a/services/audiopolicy/enginedefault/Android.mk b/services/audiopolicy/enginedefault/Android.mk
index 837d5bb..f9212f9 100644
--- a/services/audiopolicy/enginedefault/Android.mk
+++ b/services/audiopolicy/enginedefault/Android.mk
@@ -8,10 +8,11 @@
 LOCAL_SRC_FILES := \
     src/Engine.cpp \
     src/EngineInstance.cpp \
+    ../engine/common/src/ProductStrategy.cpp \
+    ../engine/common/src/EngineBase.cpp
 
 audio_policy_engine_includes_common := \
-    $(LOCAL_PATH)/include \
-    frameworks/av/services/audiopolicy/engine/interface
+    $(LOCAL_PATH)/include
 
 LOCAL_CFLAGS += \
     -Wall \
@@ -26,8 +27,7 @@
     $(TARGET_OUT_HEADERS)/hw \
     $(call include-path-for, frameworks-av) \
     $(call include-path-for, audio-utils) \
-    $(call include-path-for, bionic) \
-    frameworks/av/services/audiopolicy/common/include
+    $(call include-path-for, bionic)
 
 LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
 
@@ -37,12 +37,18 @@
 LOCAL_HEADER_LIBRARIES := libbase_headers
 
 LOCAL_STATIC_LIBRARIES := \
-    libaudiopolicycomponents \
+    libaudiopolicycomponents
 
-LOCAL_SHARED_LIBRARIES += \
+LOCAL_SHARED_LIBRARIES := \
     liblog \
     libcutils \
     libutils \
-    libmedia_helper
+    libmedia_helper \
+    libaudiopolicyengineconfig
+
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon \
+    libaudiopolicyengine_common_headers \
+    libaudiopolicyengine_interface_headers
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/services/audiopolicy/enginedefault/src/Engine.cpp b/services/audiopolicy/enginedefault/src/Engine.cpp
index cc5a025..69f0698 100644
--- a/services/audiopolicy/enginedefault/src/Engine.cpp
+++ b/services/audiopolicy/enginedefault/src/Engine.cpp
@@ -38,31 +38,33 @@
 namespace audio_policy
 {
 
+struct legacy_strategy_map { const char *name; legacy_strategy id; };
+static const std::vector<legacy_strategy_map> gLegacyStrategy = {
+    { "STRATEGY_NONE", STRATEGY_NONE },
+    { "STRATEGY_MEDIA", STRATEGY_MEDIA },
+    { "STRATEGY_PHONE", STRATEGY_PHONE },
+    { "STRATEGY_SONIFICATION", STRATEGY_SONIFICATION },
+    { "STRATEGY_SONIFICATION_RESPECTFUL", STRATEGY_SONIFICATION_RESPECTFUL },
+    { "STRATEGY_DTMF", STRATEGY_DTMF },
+    { "STRATEGY_ENFORCED_AUDIBLE", STRATEGY_ENFORCED_AUDIBLE },
+    { "STRATEGY_TRANSMITTED_THROUGH_SPEAKER", STRATEGY_TRANSMITTED_THROUGH_SPEAKER },
+    { "STRATEGY_ACCESSIBILITY", STRATEGY_ACCESSIBILITY },
+    { "STRATEGY_REROUTING", STRATEGY_REROUTING },
+    { "STRATEGY_PATCH", STRATEGY_REROUTING }, // boiler to manage stream patch volume
+};
+
 Engine::Engine()
-    : mManagerInterface(this),
-      mPhoneState(AUDIO_MODE_NORMAL),
-      mApmObserver(NULL)
 {
-    for (int i = 0; i < AUDIO_POLICY_FORCE_USE_CNT; i++) {
-        mForceUse[i] = AUDIO_POLICY_FORCE_NONE;
+    auto result = EngineBase::loadAudioPolicyEngineConfig();
+    ALOGE_IF(result.nbSkippedElement != 0,
+             "Policy Engine configuration is partially invalid, skipped %zu elements",
+             result.nbSkippedElement);
+
+    for (const auto &strategy : gLegacyStrategy) {
+        mLegacyStrategyMap[getProductStrategyByName(strategy.name)] = strategy.id;
     }
 }
 
-Engine::~Engine()
-{
-}
-
-void Engine::setObserver(AudioPolicyManagerObserver *observer)
-{
-    ALOG_ASSERT(observer != NULL, "Invalid Audio Policy Manager observer");
-    mApmObserver = observer;
-}
-
-status_t Engine::initCheck()
-{
-    return (mApmObserver != NULL) ?  NO_ERROR : NO_INIT;
-}
-
 status_t Engine::setPhoneState(audio_mode_t state)
 {
     ALOGV("setPhoneState() state %d", state);
@@ -72,22 +74,22 @@
         return BAD_VALUE;
     }
 
-    if (state == mPhoneState ) {
+    if (state == getPhoneState()) {
         ALOGW("setPhoneState() setting same state %d", state);
         return BAD_VALUE;
     }
 
     // store previous phone state for management of sonification strategy below
-    int oldState = mPhoneState;
-    mPhoneState = state;
+    int oldState = getPhoneState();
+    EngineBase::setPhoneState(state);
 
     if (!is_state_in_call(oldState) && is_state_in_call(state)) {
         ALOGV("  Entering call in setPhoneState()");
-        mApmObserver->getVolumeCurves().switchVolumeCurve(AUDIO_STREAM_VOICE_CALL,
+        getApmObserver()->getVolumeCurves().switchVolumeCurve(AUDIO_STREAM_VOICE_CALL,
                                                           AUDIO_STREAM_DTMF);
     } else if (is_state_in_call(oldState) && !is_state_in_call(state)) {
         ALOGV("  Exiting call in setPhoneState()");
-        mApmObserver->getVolumeCurves().restoreOriginVolumeCurve(AUDIO_STREAM_DTMF);
+        getApmObserver()->getVolumeCurves().restoreOriginVolumeCurve(AUDIO_STREAM_DTMF);
     }
     return NO_ERROR;
 }
@@ -101,7 +103,6 @@
             ALOGW("setForceUse() invalid config %d for FOR_COMMUNICATION", config);
             return BAD_VALUE;
         }
-        mForceUse[usage] = config;
         break;
     case AUDIO_POLICY_FORCE_FOR_MEDIA:
         if (config != AUDIO_POLICY_FORCE_HEADPHONES && config != AUDIO_POLICY_FORCE_BT_A2DP &&
@@ -112,7 +113,6 @@
             ALOGW("setForceUse() invalid config %d for FOR_MEDIA", config);
             return BAD_VALUE;
         }
-        mForceUse[usage] = config;
         break;
     case AUDIO_POLICY_FORCE_FOR_RECORD:
         if (config != AUDIO_POLICY_FORCE_BT_SCO && config != AUDIO_POLICY_FORCE_WIRED_ACCESSORY &&
@@ -120,7 +120,6 @@
             ALOGW("setForceUse() invalid config %d for FOR_RECORD", config);
             return BAD_VALUE;
         }
-        mForceUse[usage] = config;
         break;
     case AUDIO_POLICY_FORCE_FOR_DOCK:
         if (config != AUDIO_POLICY_FORCE_NONE && config != AUDIO_POLICY_FORCE_BT_CAR_DOCK &&
@@ -130,21 +129,18 @@
             config != AUDIO_POLICY_FORCE_DIGITAL_DOCK) {
             ALOGW("setForceUse() invalid config %d for FOR_DOCK", config);
         }
-        mForceUse[usage] = config;
         break;
     case AUDIO_POLICY_FORCE_FOR_SYSTEM:
         if (config != AUDIO_POLICY_FORCE_NONE &&
             config != AUDIO_POLICY_FORCE_SYSTEM_ENFORCED) {
             ALOGW("setForceUse() invalid config %d for FOR_SYSTEM", config);
         }
-        mForceUse[usage] = config;
         break;
     case AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO:
         if (config != AUDIO_POLICY_FORCE_NONE &&
             config != AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED) {
             ALOGW("setForceUse() invalid config %d for HDMI_SYSTEM_AUDIO", config);
         }
-        mForceUse[usage] = config;
         break;
     case AUDIO_POLICY_FORCE_FOR_ENCODED_SURROUND:
         if (config != AUDIO_POLICY_FORCE_NONE &&
@@ -154,20 +150,18 @@
             ALOGW("setForceUse() invalid config %d for ENCODED_SURROUND", config);
             return BAD_VALUE;
         }
-        mForceUse[usage] = config;
         break;
     case AUDIO_POLICY_FORCE_FOR_VIBRATE_RINGING:
         if (config != AUDIO_POLICY_FORCE_BT_SCO && config != AUDIO_POLICY_FORCE_NONE) {
             ALOGW("setForceUse() invalid config %d for FOR_VIBRATE_RINGING", config);
             return BAD_VALUE;
         }
-        mForceUse[usage] = config;
         break;
     default:
         ALOGW("setForceUse() invalid usage %d", usage);
         break; // TODO return BAD_VALUE?
     }
-    return NO_ERROR;
+    return EngineBase::setForceUse(usage, config);
 }
 
 routing_strategy Engine::getStrategyForStream(audio_stream_type_t stream)
@@ -176,14 +170,14 @@
     switch (stream) {
     case AUDIO_STREAM_VOICE_CALL:
     case AUDIO_STREAM_BLUETOOTH_SCO:
-        return STRATEGY_PHONE;
+        return android::STRATEGY_PHONE;
     case AUDIO_STREAM_RING:
     case AUDIO_STREAM_ALARM:
-        return STRATEGY_SONIFICATION;
+        return android::STRATEGY_SONIFICATION;
     case AUDIO_STREAM_NOTIFICATION:
-        return STRATEGY_SONIFICATION_RESPECTFUL;
+        return android::STRATEGY_SONIFICATION_RESPECTFUL;
     case AUDIO_STREAM_DTMF:
-        return STRATEGY_DTMF;
+        return android::STRATEGY_DTMF;
     default:
         ALOGE("unknown stream type %d", stream);
         FALLTHROUGH_INTENDED;
@@ -191,15 +185,15 @@
         // NOTE: SYSTEM stream uses MEDIA strategy because muting music and switching outputs
         // while key clicks are played produces a poor result
     case AUDIO_STREAM_MUSIC:
-        return STRATEGY_MEDIA;
+        return android::STRATEGY_MEDIA;
     case AUDIO_STREAM_ENFORCED_AUDIBLE:
-        return STRATEGY_ENFORCED_AUDIBLE;
+        return android::STRATEGY_ENFORCED_AUDIBLE;
     case AUDIO_STREAM_TTS:
-        return STRATEGY_TRANSMITTED_THROUGH_SPEAKER;
+        return android::STRATEGY_TRANSMITTED_THROUGH_SPEAKER;
     case AUDIO_STREAM_ACCESSIBILITY:
-        return STRATEGY_ACCESSIBILITY;
+        return android::STRATEGY_ACCESSIBILITY;
     case AUDIO_STREAM_REROUTING:
-        return STRATEGY_REROUTING;
+        return android::STRATEGY_REROUTING;
     }
 }
 
@@ -208,55 +202,54 @@
     // usage to strategy mapping
     switch (usage) {
     case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY:
-        return STRATEGY_ACCESSIBILITY;
+        return android::STRATEGY_ACCESSIBILITY;
 
     case AUDIO_USAGE_MEDIA:
     case AUDIO_USAGE_GAME:
     case AUDIO_USAGE_ASSISTANT:
     case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE:
     case AUDIO_USAGE_ASSISTANCE_SONIFICATION:
-        return STRATEGY_MEDIA;
+        return android::STRATEGY_MEDIA;
 
     case AUDIO_USAGE_VOICE_COMMUNICATION:
-        return STRATEGY_PHONE;
+        return android::STRATEGY_PHONE;
 
     case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING:
-        return STRATEGY_DTMF;
+        return android::STRATEGY_DTMF;
 
     case AUDIO_USAGE_ALARM:
     case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE:
-        return STRATEGY_SONIFICATION;
+        return android::STRATEGY_SONIFICATION;
 
     case AUDIO_USAGE_NOTIFICATION:
     case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST:
     case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT:
     case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED:
     case AUDIO_USAGE_NOTIFICATION_EVENT:
-        return STRATEGY_SONIFICATION_RESPECTFUL;
+        return android::STRATEGY_SONIFICATION_RESPECTFUL;
 
     case AUDIO_USAGE_UNKNOWN:
     default:
-        return STRATEGY_MEDIA;
+        return android::STRATEGY_MEDIA;
     }
 }
 
 audio_devices_t Engine::getDeviceForStrategy(routing_strategy strategy) const
 {
-    DeviceVector availableOutputDevices = mApmObserver->getAvailableOutputDevices();
-    DeviceVector availableInputDevices = mApmObserver->getAvailableInputDevices();
+    DeviceVector availableOutputDevices = getApmObserver()->getAvailableOutputDevices();
+    DeviceVector availableInputDevices = getApmObserver()->getAvailableInputDevices();
 
-    const SwAudioOutputCollection &outputs = mApmObserver->getOutputs();
+    const SwAudioOutputCollection &outputs = getApmObserver()->getOutputs();
 
-    return getDeviceForStrategyInt(strategy, availableOutputDevices,
+    return getDeviceForStrategyInt(static_cast<legacy_strategy>(strategy), availableOutputDevices,
                                    availableInputDevices, outputs, (uint32_t)AUDIO_DEVICE_NONE);
 }
 
-
-audio_devices_t Engine::getDeviceForStrategyInt(routing_strategy strategy,
-        DeviceVector availableOutputDevices,
-        DeviceVector availableInputDevices,
-        const SwAudioOutputCollection &outputs,
-        uint32_t outputDeviceTypesToIgnore) const
+audio_devices_t Engine::getDeviceForStrategyInt(legacy_strategy strategy,
+                                                DeviceVector availableOutputDevices,
+                                                DeviceVector availableInputDevices,
+                                                const SwAudioOutputCollection &outputs,
+                                                uint32_t outputDeviceTypesToIgnore) const
 {
     uint32_t device = AUDIO_DEVICE_NONE;
     uint32_t availableOutputDevicesType =
@@ -334,7 +327,7 @@
         }
         // for phone strategy, we first consider the forced use and then the available devices by
         // order of priority
-        switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) {
+        switch (getForceUse(AUDIO_POLICY_FORCE_FOR_COMMUNICATION)) {
         case AUDIO_POLICY_FORCE_BT_SCO:
             if (!isInCall() || strategy != STRATEGY_DTMF) {
                 device = availableOutputDevicesType & AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
@@ -352,7 +345,7 @@
             if (device) break;
             // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to A2DP
             if (!isInCall() &&
-                    (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
+                    (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
                      outputs.isA2dpSupported()) {
                 device = availableOutputDevicesType & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
                 if (device) break;
@@ -386,7 +379,7 @@
             // when not in a phone call, phone strategy should route STREAM_VOICE_CALL to
             // A2DP speaker when forcing to speaker output
             if (!isInCall() &&
-                    (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
+                    (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
                      outputs.isA2dpSupported()) {
                 device = availableOutputDevicesType & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER;
                 if (device) break;
@@ -426,7 +419,7 @@
         //   - in countries where not enforced in which case it follows STRATEGY_MEDIA
 
         if ((strategy == STRATEGY_SONIFICATION) ||
-                (mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)) {
+                (getForceUse(AUDIO_POLICY_FORCE_FOR_SYSTEM) == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)) {
             device = availableOutputDevicesType & AUDIO_DEVICE_OUT_SPEAKER;
         }
 
@@ -442,9 +435,9 @@
                 device2 = availableOutputDevicesType & AUDIO_DEVICE_OUT_BLUETOOTH_SCO;
             }
             // Use ONLY Bluetooth SCO output when ringing in vibration mode
-            if (!((mForceUse[AUDIO_POLICY_FORCE_FOR_SYSTEM] == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)
+            if (!((getForceUse(AUDIO_POLICY_FORCE_FOR_SYSTEM) == AUDIO_POLICY_FORCE_SYSTEM_ENFORCED)
                     && (strategy == STRATEGY_ENFORCED_AUDIBLE))) {
-                if (mForceUse[AUDIO_POLICY_FORCE_FOR_VIBRATE_RINGING]
+                if (getForceUse(AUDIO_POLICY_FORCE_FOR_VIBRATE_RINGING)
                         == AUDIO_POLICY_FORCE_BT_SCO) {
                     if (device2 != AUDIO_DEVICE_NONE) {
                         device = device2;
@@ -453,7 +446,7 @@
                 }
             }
             // Use both Bluetooth SCO and phone default output when ringing in normal mode
-            if (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION] == AUDIO_POLICY_FORCE_BT_SCO) {
+            if (getForceUse(AUDIO_POLICY_FORCE_FOR_COMMUNICATION) == AUDIO_POLICY_FORCE_BT_SCO) {
                 if ((strategy == STRATEGY_SONIFICATION) &&
                         (device & AUDIO_DEVICE_OUT_SPEAKER) &&
                         (availableOutputDevicesType & AUDIO_DEVICE_OUT_SPEAKER_SAFE)) {
@@ -520,7 +513,7 @@
             device2 = availableOutputDevicesType & AUDIO_DEVICE_OUT_HEARING_AID;
         }
         if ((device2 == AUDIO_DEVICE_NONE) &&
-                (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
+                (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) != AUDIO_POLICY_FORCE_NO_BT_A2DP) &&
                  outputs.isA2dpSupported()) {
             device2 = availableOutputDevicesType & AUDIO_DEVICE_OUT_BLUETOOTH_A2DP;
             if (device2 == AUDIO_DEVICE_NONE) {
@@ -531,7 +524,7 @@
             }
         }
         if ((device2 == AUDIO_DEVICE_NONE) &&
-            (mForceUse[AUDIO_POLICY_FORCE_FOR_MEDIA] == AUDIO_POLICY_FORCE_SPEAKER)) {
+            (getForceUse(AUDIO_POLICY_FORCE_FOR_MEDIA) == AUDIO_POLICY_FORCE_SPEAKER)) {
             device2 = availableOutputDevicesType & AUDIO_DEVICE_OUT_SPEAKER;
         }
         if (device2 == AUDIO_DEVICE_NONE) {
@@ -560,7 +553,7 @@
             device2 = availableOutputDevicesType & AUDIO_DEVICE_OUT_AUX_DIGITAL;
         }
         if ((device2 == AUDIO_DEVICE_NONE) &&
-                (mForceUse[AUDIO_POLICY_FORCE_FOR_DOCK] == AUDIO_POLICY_FORCE_ANALOG_DOCK)) {
+                (getForceUse(AUDIO_POLICY_FORCE_FOR_DOCK) == AUDIO_POLICY_FORCE_ANALOG_DOCK)) {
             device2 = availableOutputDevicesType & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET;
         }
         if (device2 == AUDIO_DEVICE_NONE) {
@@ -581,7 +574,7 @@
 
         // If hdmi system audio mode is on, remove speaker out of output list.
         if ((strategy == STRATEGY_MEDIA) &&
-            (mForceUse[AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO] ==
+            (getForceUse(AUDIO_POLICY_FORCE_FOR_HDMI_SYSTEM_AUDIO) ==
                 AUDIO_POLICY_FORCE_HDMI_SYSTEM_AUDIO_ENFORCED)) {
             device &= ~AUDIO_DEVICE_OUT_SPEAKER;
         }
@@ -603,7 +596,7 @@
 
     if (device == AUDIO_DEVICE_NONE) {
         ALOGV("getDeviceForStrategy() no device found for strategy %d", strategy);
-        device = mApmObserver->getDefaultOutputDevice()->type();
+        device = getApmObserver()->getDefaultOutputDevice()->type();
         ALOGE_IF(device == AUDIO_DEVICE_NONE,
                  "getDeviceForStrategy() no default device defined");
     }
@@ -614,9 +607,9 @@
 
 audio_devices_t Engine::getDeviceForInputSource(audio_source_t inputSource) const
 {
-    const DeviceVector &availableOutputDevices = mApmObserver->getAvailableOutputDevices();
-    const DeviceVector &availableInputDevices = mApmObserver->getAvailableInputDevices();
-    const SwAudioOutputCollection &outputs = mApmObserver->getOutputs();
+    const DeviceVector &availableOutputDevices = getApmObserver()->getAvailableOutputDevices();
+    const DeviceVector &availableInputDevices = getApmObserver()->getAvailableInputDevices();
+    const SwAudioOutputCollection &outputs = getApmObserver()->getOutputs();
     audio_devices_t availableDeviceTypes = availableInputDevices.types() & ~AUDIO_DEVICE_BIT_IN;
 
     uint32_t device = AUDIO_DEVICE_NONE;
@@ -651,7 +644,7 @@
     case AUDIO_SOURCE_MIC:
     if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_A2DP) {
         device = AUDIO_DEVICE_IN_BLUETOOTH_A2DP;
-    } else if ((mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO) &&
+    } else if ((getForceUse(AUDIO_POLICY_FORCE_FOR_RECORD) == AUDIO_POLICY_FORCE_BT_SCO) &&
         (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET)) {
         device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
     } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) {
@@ -675,7 +668,7 @@
                     primaryOutput->getModuleHandle()) & ~AUDIO_DEVICE_BIT_IN;
         }
 
-        switch (mForceUse[AUDIO_POLICY_FORCE_FOR_COMMUNICATION]) {
+        switch (getForceUse(AUDIO_POLICY_FORCE_FOR_COMMUNICATION)) {
         case AUDIO_POLICY_FORCE_BT_SCO:
             // if SCO device is requested but no SCO device is available, fall back to default case
             if (availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
@@ -709,7 +702,7 @@
     case AUDIO_SOURCE_VOICE_RECOGNITION:
     case AUDIO_SOURCE_UNPROCESSED:
     case AUDIO_SOURCE_HOTWORD:
-        if (mForceUse[AUDIO_POLICY_FORCE_FOR_RECORD] == AUDIO_POLICY_FORCE_BT_SCO &&
+        if (getForceUse(AUDIO_POLICY_FORCE_FOR_RECORD) == AUDIO_POLICY_FORCE_BT_SCO &&
                 availableDeviceTypes & AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET) {
             device = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET;
         } else if (availableDeviceTypes & AUDIO_DEVICE_IN_WIRED_HEADSET) {
@@ -780,10 +773,86 @@
     return device;
 }
 
+void Engine::updateDeviceSelectionCache()
+{
+    for (const auto &iter : getProductStrategies()) {
+        const auto &strategy = iter.second;
+        auto devices = getDevicesForProductStrategy(strategy->getId());
+        mDevicesForStrategies[strategy->getId()] = devices;
+        strategy->setDeviceTypes(devices.types());
+        strategy->setDeviceAddress(devices.getFirstValidAddress().c_str());
+    }
+}
+
+DeviceVector Engine::getDevicesForProductStrategy(product_strategy_t strategy) const
+{
+    DeviceVector availableOutputDevices = getApmObserver()->getAvailableOutputDevices();
+    DeviceVector availableInputDevices = getApmObserver()->getAvailableInputDevices();
+    const SwAudioOutputCollection &outputs = getApmObserver()->getOutputs();
+
+    auto legacyStrategy = mLegacyStrategyMap.find(strategy) != end(mLegacyStrategyMap) ?
+                mLegacyStrategyMap.at(strategy) : STRATEGY_NONE;
+    audio_devices_t devices = getDeviceForStrategyInt(legacyStrategy,
+                                                      availableOutputDevices,
+                                                      availableInputDevices, outputs,
+                                                      (uint32_t)AUDIO_DEVICE_NONE);
+    return availableOutputDevices.getDevicesFromTypeMask(devices);
+}
+
+DeviceVector Engine::getOutputDevicesForAttributes(const audio_attributes_t &attributes,
+                                                   const sp<DeviceDescriptor> &preferredDevice,
+                                                   bool fromCache) const
+{
+    // First check for explict routing device
+    if (preferredDevice != nullptr) {
+        ALOGV("%s explicit Routing on device %s", __func__, preferredDevice->toString().c_str());
+        return DeviceVector(preferredDevice);
+    }
+    //
+    // @TODO: what is the priority of explicit routing? Shall it be considered first as it used to
+    // be by APM?
+    //
+    product_strategy_t strategy = getProductStrategyForAttributes(attributes);
+    //
+    // @TODO: manage dynamic mix
+    //
+
+    return fromCache? mDevicesForStrategies.at(strategy) : getDevicesForProductStrategy(strategy);
+}
+
+DeviceVector Engine::getOutputDevicesForStream(audio_stream_type_t stream, bool fromCache) const
+{
+    auto attributes = getAttributesForStreamType(stream);
+    return getOutputDevicesForAttributes(attributes, nullptr, fromCache);
+}
+
+sp<DeviceDescriptor> Engine::getInputDeviceForAttributes(const audio_attributes_t &attr,
+                                                         AudioMix **/*mix*/) const
+{
+    const auto &availableInputDevices = getApmObserver()->getAvailableInputDevices();
+    std::string address;
+    //
+    // @TODO: manage explicit routing and dynamic mix
+    //
+    audio_devices_t deviceType = getDeviceForInputSource(attr.source);
+
+    if (audio_is_remote_submix_device(deviceType)) {
+        address = "0";
+        std::size_t pos;
+        std::string tags { attr.tags };
+        if ((pos = tags.find("addr=")) != std::string::npos) {
+            address = tags.substr(pos + std::strlen("addr="));
+        }
+    }
+    return availableInputDevices.getDevice(deviceType,
+                                           String8(address.c_str()),
+                                           AUDIO_FORMAT_DEFAULT);
+}
+
 template <>
 AudioPolicyManagerInterface *Engine::queryInterface()
 {
-    return &mManagerInterface;
+    return this;
 }
 
 } // namespace audio_policy
diff --git a/services/audiopolicy/enginedefault/src/Engine.h b/services/audiopolicy/enginedefault/src/Engine.h
index 06186c1..80e92de 100644
--- a/services/audiopolicy/enginedefault/src/Engine.h
+++ b/services/audiopolicy/enginedefault/src/Engine.h
@@ -16,7 +16,7 @@
 
 #pragma once
 
-
+#include "EngineBase.h"
 #include "AudioPolicyManagerInterface.h"
 #include <AudioGain.h>
 #include <policy.h>
@@ -29,114 +29,76 @@
 namespace audio_policy
 {
 
-class Engine
+enum legacy_strategy {
+    STRATEGY_NONE = -1,
+    STRATEGY_MEDIA,
+    STRATEGY_PHONE,
+    STRATEGY_SONIFICATION,
+    STRATEGY_SONIFICATION_RESPECTFUL,
+    STRATEGY_DTMF,
+    STRATEGY_ENFORCED_AUDIBLE,
+    STRATEGY_TRANSMITTED_THROUGH_SPEAKER,
+    STRATEGY_ACCESSIBILITY,
+    STRATEGY_REROUTING,
+};
+
+class Engine : public EngineBase
 {
 public:
     Engine();
-    virtual ~Engine();
+    virtual ~Engine() = default;
 
     template <class RequestedInterface>
     RequestedInterface *queryInterface();
 
 private:
-    /// Interface members
-    class ManagerInterfaceImpl : public AudioPolicyManagerInterface
-    {
-    public:
-        explicit ManagerInterfaceImpl(Engine *policyEngine)
-            : mPolicyEngine(policyEngine) {}
+    ///
+    /// from EngineBase, so from AudioPolicyManagerInterface
+    ///
+    audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const override;
 
-        virtual void setObserver(AudioPolicyManagerObserver *observer)
-        {
-            mPolicyEngine->setObserver(observer);
-        }
-        virtual status_t initCheck()
-        {
-            return mPolicyEngine->initCheck();
-        }
-        virtual audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const
-        {
-            return mPolicyEngine->getDeviceForInputSource(inputSource);
-        }
-        virtual audio_devices_t getDeviceForStrategy(routing_strategy strategy) const
-        {
-            return mPolicyEngine->getDeviceForStrategy(strategy);
-        }
-        virtual routing_strategy getStrategyForStream(audio_stream_type_t stream)
-        {
-            return mPolicyEngine->getStrategyForStream(stream);
-        }
-        virtual routing_strategy getStrategyForUsage(audio_usage_t usage)
-        {
-            return mPolicyEngine->getStrategyForUsage(usage);
-        }
-        virtual status_t setPhoneState(audio_mode_t mode)
-        {
-            return mPolicyEngine->setPhoneState(mode);
-        }
-        virtual audio_mode_t getPhoneState() const
-        {
-            return mPolicyEngine->getPhoneState();
-        }
-        virtual status_t setForceUse(audio_policy_force_use_t usage,
-                                     audio_policy_forced_cfg_t config)
-        {
-            return mPolicyEngine->setForceUse(usage, config);
-        }
-        virtual audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const
-        {
-            return mPolicyEngine->getForceUse(usage);
-        }
-        virtual status_t setDeviceConnectionState(const sp<DeviceDescriptor> /*devDesc*/,
-                                                  audio_policy_dev_state_t /*state*/)
-        {
-            return NO_ERROR;
-        }
-    private:
-        Engine *mPolicyEngine;
-    } mManagerInterface;
+    audio_devices_t getDeviceForStrategy(routing_strategy strategy) const override;
+
+    routing_strategy getStrategyForStream(audio_stream_type_t stream) override;
+
+    routing_strategy getStrategyForUsage(audio_usage_t usage) override;
+
+    status_t setPhoneState(audio_mode_t mode) override;
+
+    status_t setForceUse(audio_policy_force_use_t usage,
+                         audio_policy_forced_cfg_t config) override;
+
+    DeviceVector getOutputDevicesForAttributes(const audio_attributes_t &attr,
+                                               const sp<DeviceDescriptor> &preferedDevice = nullptr,
+                                               bool fromCache = false) const override;
+
+    DeviceVector getOutputDevicesForStream(audio_stream_type_t stream,
+                                           bool fromCache = false) const override;
+
+    sp<DeviceDescriptor> getInputDeviceForAttributes(
+            const audio_attributes_t &attr, AudioMix **mix = nullptr) const override;
+
+    void updateDeviceSelectionCache() override;
+
 
 private:
     /* Copy facilities are put private to disable copy. */
     Engine(const Engine &object);
     Engine &operator=(const Engine &object);
 
-    void setObserver(AudioPolicyManagerObserver *observer);
-
-    status_t initCheck();
-
-    inline bool isInCall() const
-    {
-        return is_state_in_call(mPhoneState);
-    }
-
-    status_t setPhoneState(audio_mode_t mode);
-    audio_mode_t getPhoneState() const
-    {
-        return mPhoneState;
-    }
-    status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config);
-    audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const
-    {
-        return mForceUse[usage];
-    }
     status_t setDefaultDevice(audio_devices_t device);
 
-    routing_strategy getStrategyForStream(audio_stream_type_t stream);
-    routing_strategy getStrategyForUsage(audio_usage_t usage);
-    audio_devices_t getDeviceForStrategy(routing_strategy strategy) const;
-    audio_devices_t getDeviceForStrategyInt(routing_strategy strategy,
-            DeviceVector availableOutputDevices,
-            DeviceVector availableInputDevices,
-            const SwAudioOutputCollection &outputs,
-            uint32_t outputDeviceTypesToIgnore) const;
-    audio_devices_t getDeviceForInputSource(audio_source_t inputSource) const;
-    audio_mode_t mPhoneState;  /**< current phone state. */
+    audio_devices_t getDeviceForStrategyInt(legacy_strategy strategy,
+                                            DeviceVector availableOutputDevices,
+                                            DeviceVector availableInputDevices,
+                                            const SwAudioOutputCollection &outputs,
+                                            uint32_t outputDeviceTypesToIgnore) const;
 
-    /** current forced use configuration. */
-    audio_policy_forced_cfg_t mForceUse[AUDIO_POLICY_FORCE_USE_CNT];
+    DeviceVector getDevicesForProductStrategy(product_strategy_t strategy) const;
 
-    AudioPolicyManagerObserver *mApmObserver;
+    DeviceStrategyMap mDevicesForStrategies;
+
+    std::map<product_strategy_t, legacy_strategy> mLegacyStrategyMap;
 };
 } // namespace audio_policy
 } // namespace android
diff --git a/services/audiopolicy/tests/Android.mk b/services/audiopolicy/tests/Android.mk
index e4fba0f..5f0974e 100644
--- a/services/audiopolicy/tests/Android.mk
+++ b/services/audiopolicy/tests/Android.mk
@@ -4,7 +4,6 @@
 
 LOCAL_C_INCLUDES := \
   frameworks/av/services/audiopolicy \
-  frameworks/av/services/audiopolicy/common/include \
   frameworks/av/services/audiopolicy/engine/interface \
   $(call include-path-for, audio-utils) \
 
@@ -18,6 +17,9 @@
 LOCAL_STATIC_LIBRARIES := \
   libaudiopolicycomponents \
 
+LOCAL_HEADER_LIBRARIES := \
+    libaudiopolicycommon
+
 LOCAL_SRC_FILES := \
   audiopolicymanager_tests.cpp \