diff --git a/audio/policy/1.0/vts/OWNERS b/audio/policy/1.0/vts/OWNERS
new file mode 100644
index 0000000..24071af
--- /dev/null
+++ b/audio/policy/1.0/vts/OWNERS
@@ -0,0 +1,2 @@
+elaurent@google.com
+mnaganov@google.com
diff --git a/audio/policy/1.0/vts/functional/Android.bp b/audio/policy/1.0/vts/functional/Android.bp
new file mode 100644
index 0000000..f668a25
--- /dev/null
+++ b/audio/policy/1.0/vts/functional/Android.bp
@@ -0,0 +1,31 @@
+cc_test {
+    name: "VtsHalAudioPolicyV1_0TargetTest",
+    defaults: ["vts_target_tests_defaults"],
+    srcs: [
+        "ValidateEngineConfiguration.cpp",
+    ],
+    static_libs: [
+        "android.hardware.audio.common.test.utility",
+        "libxml2",
+        "liblog",
+    ],
+    // Use test_config for vts-core suite.
+    // TODO(b/146104851): Add auto-gen rules and remove it.
+    test_config: "VtsHalAudioPolicyV1_0TargetTest.xml",
+    cflags: [
+        "-DXSD_DIR=\"/data/local/tmp\"",
+        "-Wall",
+        "-Werror",
+        "-Wno-unused-function",
+        "-O0",
+        "-g",
+    ],
+    data: [
+        ":audio_policy_engine_conf_V1_0",
+    ],
+    gtest: true,
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/audio/policy/1.0/vts/functional/ValidateEngineConfiguration.cpp b/audio/policy/1.0/vts/functional/ValidateEngineConfiguration.cpp
new file mode 100644
index 0000000..1eb39f9
--- /dev/null
+++ b/audio/policy/1.0/vts/functional/ValidateEngineConfiguration.cpp
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <unistd.h>
+#include <string>
+#include "utility/ValidateXml.h"
+
+static const std::vector<const char*> locations = {"/odm/etc", "/vendor/etc", "/system/etc"};
+static const std::string config = "audio_policy_engine_configuration.xml";
+static const std::string schema =
+        std::string(XSD_DIR) + "/audio_policy_engine_configuration_V1_0.xsd";
+
+/**
+ * @brief TEST to ensure the audio policy engine configuration file is validating schemas.
+ * Note: this configuration file is not mandatory, an hardcoded fallback is provided, so
+ * it does not fail if not found.
+ */
+TEST(ValidateConfiguration, audioPolicyEngineConfiguration) {
+    RecordProperty("description",
+                   "Verify that the audio policy engine configuration file "
+                   "is valid according to the schemas");
+    EXPECT_VALID_XML_MULTIPLE_LOCATIONS(config.c_str(), locations, schema.c_str());
+}
diff --git a/audio/policy/1.0/vts/functional/VtsHalAudioPolicyV1_0TargetTest.xml b/audio/policy/1.0/vts/functional/VtsHalAudioPolicyV1_0TargetTest.xml
new file mode 100644
index 0000000..4318e92
--- /dev/null
+++ b/audio/policy/1.0/vts/functional/VtsHalAudioPolicyV1_0TargetTest.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Runs VtsHalAudioPolicyV1_0TargetTest.">
+  <option name="test-suite-tag" value="apct" />
+  <option name="test-suite-tag" value="apct-native" />
+
+  <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer">
+  </target_preparer>
+
+  <target_preparer class="com.android.tradefed.targetprep.RunCommandTargetPreparer">
+  </target_preparer>
+
+  <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+    <option name="cleanup" value="true" />
+    <option name="push" value="VtsHalAudioPolicyV1_0TargetTest->/data/local/tmp/VtsHalAudioPolicyV1_0TargetTest" />
+    <option name="push" value="audio_policy_engine_conf_V1_0.xsd->/data/local/tmp/audio_policy_engine_configuration_V1_0.xsd" />
+  </target_preparer>
+
+  <test class="com.android.tradefed.testtype.GTest" >
+    <option name="native-test-device-path" value="/data/local/tmp" />
+    <option name="module-name" value="VtsHalAudioPolicyV1_0TargetTest" />
+  </test>
+</configuration>
diff --git a/audio/policy/1.0/xml/Android.bp b/audio/policy/1.0/xml/Android.bp
new file mode 100644
index 0000000..6da7b5a
--- /dev/null
+++ b/audio/policy/1.0/xml/Android.bp
@@ -0,0 +1,5 @@
+xsd_config {
+    name: "audio_policy_engine_conf_V1_0",
+    srcs: ["audio_policy_engine_configuration.xsd"],
+    package_name: "audio.policy.V1_0",
+}
diff --git a/audio/policy/1.0/xml/api/current.txt b/audio/policy/1.0/xml/api/current.txt
new file mode 100644
index 0000000..29a9cd4
--- /dev/null
+++ b/audio/policy/1.0/xml/api/current.txt
@@ -0,0 +1,296 @@
+// Signature format: 2.0
+package audio.policy.V1_0 {
+
+  public class AttributesGroup {
+    ctor public AttributesGroup();
+    method public java.util.List<audio.policy.V1_0.AttributesType> getAttributes_optional();
+    method public audio.policy.V1_0.BundleType getBundle_optional();
+    method public audio.policy.V1_0.ContentTypeType getContentType_optional();
+    method public audio.policy.V1_0.FlagsType getFlags_optional();
+    method public audio.policy.V1_0.SourceType getSource_optional();
+    method public audio.policy.V1_0.Stream getStreamType();
+    method public audio.policy.V1_0.UsageType getUsage_optional();
+    method public String getVolumeGroup();
+    method public void setBundle_optional(audio.policy.V1_0.BundleType);
+    method public void setContentType_optional(audio.policy.V1_0.ContentTypeType);
+    method public void setFlags_optional(audio.policy.V1_0.FlagsType);
+    method public void setSource_optional(audio.policy.V1_0.SourceType);
+    method public void setStreamType(audio.policy.V1_0.Stream);
+    method public void setUsage_optional(audio.policy.V1_0.UsageType);
+    method public void setVolumeGroup(String);
+  }
+
+  public class AttributesRef {
+    ctor public AttributesRef();
+    method public java.util.List<audio.policy.V1_0.AttributesRefType> getReference();
+  }
+
+  public class AttributesRefType {
+    ctor public AttributesRefType();
+    method public audio.policy.V1_0.AttributesType getAttributes();
+    method public String getName();
+    method public void setAttributes(audio.policy.V1_0.AttributesType);
+    method public void setName(String);
+  }
+
+  public class AttributesType {
+    ctor public AttributesType();
+    method public String getAttributesRef();
+    method public audio.policy.V1_0.BundleType getBundle();
+    method public audio.policy.V1_0.ContentTypeType getContentType();
+    method public audio.policy.V1_0.FlagsType getFlags();
+    method public audio.policy.V1_0.SourceType getSource();
+    method public audio.policy.V1_0.UsageType getUsage();
+    method public void setAttributesRef(String);
+    method public void setBundle(audio.policy.V1_0.BundleType);
+    method public void setContentType(audio.policy.V1_0.ContentTypeType);
+    method public void setFlags(audio.policy.V1_0.FlagsType);
+    method public void setSource(audio.policy.V1_0.SourceType);
+    method public void setUsage(audio.policy.V1_0.UsageType);
+  }
+
+  public class BundleType {
+    ctor public BundleType();
+    method public String getKey();
+    method public String getValue();
+    method public void setKey(String);
+    method public void setValue(String);
+  }
+
+  public class Configuration {
+    ctor public Configuration();
+    method public java.util.List<audio.policy.V1_0.AttributesRef> getAttributesRef();
+    method public java.util.List<audio.policy.V1_0.CriteriaType> getCriteria();
+    method public java.util.List<audio.policy.V1_0.CriterionTypesType> getCriterion_types();
+    method public java.util.List<audio.policy.V1_0.ProductStrategies> getProductStrategies();
+    method public audio.policy.V1_0.Version getVersion();
+    method public java.util.List<audio.policy.V1_0.VolumeGroupsType> getVolumeGroups();
+    method public java.util.List<audio.policy.V1_0.VolumesType> getVolumes();
+    method public void setVersion(audio.policy.V1_0.Version);
+  }
+
+  public enum ContentType {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.ContentType AUDIO_CONTENT_TYPE_MOVIE;
+    enum_constant public static final audio.policy.V1_0.ContentType AUDIO_CONTENT_TYPE_MUSIC;
+    enum_constant public static final audio.policy.V1_0.ContentType AUDIO_CONTENT_TYPE_SONIFICATION;
+    enum_constant public static final audio.policy.V1_0.ContentType AUDIO_CONTENT_TYPE_SPEECH;
+    enum_constant public static final audio.policy.V1_0.ContentType AUDIO_CONTENT_TYPE_UNKNOWN;
+  }
+
+  public class ContentTypeType {
+    ctor public ContentTypeType();
+    method public audio.policy.V1_0.ContentType getValue();
+    method public void setValue(audio.policy.V1_0.ContentType);
+  }
+
+  public class CriteriaType {
+    ctor public CriteriaType();
+    method public java.util.List<audio.policy.V1_0.CriterionType> getCriterion();
+  }
+
+  public class CriterionType {
+    ctor public CriterionType();
+    method public String getName();
+    method public String getType();
+    method public String get_default();
+    method public void setName(String);
+    method public void setType(String);
+    method public void set_default(String);
+  }
+
+  public class CriterionTypeType {
+    ctor public CriterionTypeType();
+    method public String getName();
+    method public audio.policy.V1_0.PfwCriterionTypeEnum getType();
+    method public audio.policy.V1_0.ValuesType getValues();
+    method public void setName(String);
+    method public void setType(audio.policy.V1_0.PfwCriterionTypeEnum);
+    method public void setValues(audio.policy.V1_0.ValuesType);
+  }
+
+  public class CriterionTypesType {
+    ctor public CriterionTypesType();
+    method public java.util.List<audio.policy.V1_0.CriterionTypeType> getCriterion_type();
+  }
+
+  public enum DeviceCategory {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.DeviceCategory DEVICE_CATEGORY_EARPIECE;
+    enum_constant public static final audio.policy.V1_0.DeviceCategory DEVICE_CATEGORY_EXT_MEDIA;
+    enum_constant public static final audio.policy.V1_0.DeviceCategory DEVICE_CATEGORY_HEADSET;
+    enum_constant public static final audio.policy.V1_0.DeviceCategory DEVICE_CATEGORY_HEARING_AID;
+    enum_constant public static final audio.policy.V1_0.DeviceCategory DEVICE_CATEGORY_SPEAKER;
+  }
+
+  public enum FlagType {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_AUDIBILITY_ENFORCED;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_BEACON;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_BYPASS_MUTE;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_CAPTURE_PRIVATE;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_DEEP_BUFFER;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_HW_AV_SYNC;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_HW_HOTWORD;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_LOW_LATENCY;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_MUTE_HAPTIC;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_NONE;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_NO_MEDIA_PROJECTION;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_NO_SYSTEM_CAPTURE;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_SCO;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_SECURE;
+  }
+
+  public class FlagsType {
+    ctor public FlagsType();
+    method public java.util.List<audio.policy.V1_0.FlagType> getValue();
+    method public void setValue(java.util.List<audio.policy.V1_0.FlagType>);
+  }
+
+  public enum PfwCriterionTypeEnum {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.PfwCriterionTypeEnum exclusive;
+    enum_constant public static final audio.policy.V1_0.PfwCriterionTypeEnum inclusive;
+  }
+
+  public class ProductStrategies {
+    ctor public ProductStrategies();
+    method public java.util.List<audio.policy.V1_0.ProductStrategies.ProductStrategy> getProductStrategy();
+  }
+
+  public static class ProductStrategies.ProductStrategy {
+    ctor public ProductStrategies.ProductStrategy();
+    method public java.util.List<audio.policy.V1_0.AttributesGroup> getAttributesGroup();
+    method public String getName();
+    method public void setName(String);
+  }
+
+  public enum SourceEnumType {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_CAMCORDER;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_DEFAULT;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_ECHO_REFERENCE;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_FM_TUNER;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_MIC;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_REMOTE_SUBMIX;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_UNPROCESSED;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_VOICE_CALL;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_VOICE_COMMUNICATION;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_VOICE_DOWNLINK;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_VOICE_PERFORMANCE;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_VOICE_RECOGNITION;
+    enum_constant public static final audio.policy.V1_0.SourceEnumType AUDIO_SOURCE_VOICE_UPLINK;
+  }
+
+  public class SourceType {
+    ctor public SourceType();
+    method public audio.policy.V1_0.SourceEnumType getValue();
+    method public void setValue(audio.policy.V1_0.SourceEnumType);
+  }
+
+  public enum Stream {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_ACCESSIBILITY;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_ALARM;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_ASSISTANT;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_BLUETOOTH_SCO;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_DEFAULT;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_DTMF;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_ENFORCED_AUDIBLE;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_MUSIC;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_NOTIFICATION;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_RING;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_SYSTEM;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_TTS;
+    enum_constant public static final audio.policy.V1_0.Stream AUDIO_STREAM_VOICE_CALL;
+  }
+
+  public enum UsageEnumType {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ALARM;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_SONIFICATION;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANT;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_CALL_ASSISTANT;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_GAME;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_MEDIA;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_NOTIFICATION;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_UNKNOWN;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_VIRTUAL_SOURCE;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_VOICE_COMMUNICATION;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING;
+  }
+
+  public class UsageType {
+    ctor public UsageType();
+    method public audio.policy.V1_0.UsageEnumType getValue();
+    method public void setValue(audio.policy.V1_0.UsageEnumType);
+  }
+
+  public class ValueType {
+    ctor public ValueType();
+    method public String getLiteral();
+    method public int getNumerical();
+    method public void setLiteral(String);
+    method public void setNumerical(int);
+  }
+
+  public class ValuesType {
+    ctor public ValuesType();
+    method public java.util.List<audio.policy.V1_0.ValueType> getValue();
+  }
+
+  public enum Version {
+    method public String getRawName();
+    enum_constant public static final audio.policy.V1_0.Version _1_0;
+  }
+
+  public class Volume {
+    ctor public Volume();
+    method public audio.policy.V1_0.DeviceCategory getDeviceCategory();
+    method public java.util.List<java.lang.String> getPoint();
+    method public String getRef();
+    method public void setDeviceCategory(audio.policy.V1_0.DeviceCategory);
+    method public void setRef(String);
+  }
+
+  public class VolumeGroupsType {
+    ctor public VolumeGroupsType();
+    method public java.util.List<audio.policy.V1_0.VolumeGroupsType.VolumeGroup> getVolumeGroup();
+  }
+
+  public static class VolumeGroupsType.VolumeGroup {
+    ctor public VolumeGroupsType.VolumeGroup();
+    method public int getIndexMax();
+    method public int getIndexMin();
+    method public String getName();
+    method public java.util.List<audio.policy.V1_0.Volume> getVolume();
+    method public void setIndexMax(int);
+    method public void setIndexMin(int);
+    method public void setName(String);
+  }
+
+  public class VolumeRef {
+    ctor public VolumeRef();
+    method public String getName();
+    method public java.util.List<java.lang.String> getPoint();
+    method public void setName(String);
+  }
+
+  public class VolumesType {
+    ctor public VolumesType();
+    method public java.util.List<audio.policy.V1_0.VolumeRef> getReference();
+  }
+
+  public class XmlParser {
+    ctor public XmlParser();
+    method public static audio.policy.V1_0.Configuration read(java.io.InputStream) throws javax.xml.datatype.DatatypeConfigurationException, java.io.IOException, org.xmlpull.v1.XmlPullParserException;
+    method public static String readText(org.xmlpull.v1.XmlPullParser) throws java.io.IOException, org.xmlpull.v1.XmlPullParserException;
+    method public static void skip(org.xmlpull.v1.XmlPullParser) throws java.io.IOException, org.xmlpull.v1.XmlPullParserException;
+  }
+
+}
+
diff --git a/audio/policy/1.0/xml/api/last_current.txt b/audio/policy/1.0/xml/api/last_current.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/audio/policy/1.0/xml/api/last_current.txt
diff --git a/audio/policy/1.0/xml/api/last_removed.txt b/audio/policy/1.0/xml/api/last_removed.txt
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/audio/policy/1.0/xml/api/last_removed.txt
diff --git a/audio/policy/1.0/xml/api/removed.txt b/audio/policy/1.0/xml/api/removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/audio/policy/1.0/xml/api/removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
new file mode 100644
index 0000000..842e724
--- /dev/null
+++ b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
@@ -0,0 +1,402 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!-- Copyright (C) 2019 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.
+     -->
+
+ <xs:schema version="2.0"
+            elementFormDefault="qualified"
+            attributeFormDefault="unqualified"
+            xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <!-- List the config versions supported by audio policy engine. -->
+    <xs:simpleType name="version">
+        <xs:restriction base="xs:decimal">
+            <xs:enumeration value="1.0"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:element name="configuration">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="ProductStrategies" type="ProductStrategies"  minOccurs="0" maxOccurs="unbounded"/>
+                <xs:element name="criterion_types" type="criterionTypesType"  minOccurs="0" maxOccurs="unbounded"/>
+                <xs:element name="criteria" type="criteriaType"  minOccurs="0" maxOccurs="unbounded"/>
+                <xs:element name="volumeGroups" type="volumeGroupsType"  minOccurs="0" maxOccurs="unbounded"/>
+                <xs:element name="volumes" type="volumesType" minOccurs="0" maxOccurs="unbounded"/>
+                <xs:element name="attributesRef" type="attributesRef"  minOccurs="0" maxOccurs="unbounded"/>
+            </xs:sequence>
+            <xs:attribute name="version" type="version" use="required"/>
+        </xs:complexType>
+
+        <xs:key name="volumeCurveNameKey">
+            <xs:selector xpath="volumes/reference"/>
+            <xs:field xpath="@name"/>
+        </xs:key>
+        <xs:keyref name="volumeCurveRef" refer="volumeCurveNameKey">
+            <xs:selector xpath="volumeGroups/volumeGroup"/>
+            <xs:field xpath="@ref"/>
+        </xs:keyref>
+
+        <xs:key name="attributesRefNameKey">
+            <xs:selector xpath="attributesRef/reference"/>
+            <xs:field xpath="@name"/>
+        </xs:key>
+        <xs:keyref name="volumeGroupAttributesRef" refer="attributesRefNameKey">
+            <xs:selector xpath="volumeGroups/volumeGroup/volume"/>
+            <xs:field xpath="@attributesRef"/>
+        </xs:keyref>
+        <xs:keyref name="ProductStrategyAttributesRef" refer="attributesRefNameKey">
+            <xs:selector xpath="ProductStrategies/ProductStrategy/Attributes"/>
+            <xs:field xpath="@attributesRef"/>
+        </xs:keyref>
+
+        <xs:unique name="productStrategyNameUniqueness">
+            <xs:selector xpath="ProductStrategies/ProductStrategy"/>
+            <xs:field xpath="@name"/>
+        </xs:unique>
+
+        <!-- ensure validity of volume group referred in product strategy-->
+        <xs:key name="volumeGroupKey">
+            <xs:selector xpath="volumeGroups/volumeGroup/name"/>
+            <xs:field xpath="."/>
+        </xs:key>
+        <xs:keyref name="volumeGroupRef" refer="volumeGroupKey">
+            <xs:selector xpath="ProductStrategies/ProductStrategy/AttributesGroup"/>
+            <xs:field xpath="@volumeGroup"/>
+        </xs:keyref>
+
+        <xs:unique name="volumeTargetUniqueness">
+            <xs:selector xpath="volumeGroups/volumeGroup"/>
+            <xs:field xpath="@name"/>
+            <xs:field xpath="@deviceCategory"/>
+        </xs:unique>
+
+        <!-- ensure validity of criterion type referred in criterion-->
+        <xs:key name="criterionTypeKey">
+            <xs:selector xpath="criterion_types/criterion_type"/>
+            <xs:field xpath="@name"/>
+        </xs:key>
+        <xs:keyref name="criterionTypeKeyRef" refer="criterionTypeKey">
+            <xs:selector xpath="criteria/criterion"/>
+            <xs:field xpath="@type"/>
+        </xs:keyref>
+
+    </xs:element>
+
+    <xs:complexType name="ProductStrategies">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+            </xs:documentation>
+        </xs:annotation>
+        <xs:sequence>
+            <xs:element name="ProductStrategy" maxOccurs="unbounded">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="AttributesGroup" type="AttributesGroup" minOccurs="1" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                    <xs:attribute name="name" type="xs:string" use="required"/>
+                </xs:complexType>
+            </xs:element>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:complexType name="AttributesGroup">
+        <xs:sequence>
+            <xs:choice minOccurs="0">
+                <xs:element name="Attributes" type="AttributesType" minOccurs="1" maxOccurs="unbounded"/>
+                <xs:sequence>
+                    <xs:element name="ContentType" type="ContentTypeType" minOccurs="0" maxOccurs="1"/>
+                    <xs:element name="Usage" type="UsageType" minOccurs="1" maxOccurs="1"/>
+                    <xs:element name="Source" type="SourceType" minOccurs="0" maxOccurs="1"/>
+                    <xs:element name="Flags" type="FlagsType" minOccurs="0" maxOccurs="1"/>
+                    <xs:element name="Bundle" type="BundleType" minOccurs="0" maxOccurs="1"/>
+                </xs:sequence>
+            </xs:choice>
+        </xs:sequence>
+        <xs:attribute name="streamType" type="stream" use="optional"/>
+        <xs:attribute name="volumeGroup" type="xs:string" use="optional"/>
+    </xs:complexType>
+
+    <xs:complexType name="volumeGroupsType">
+        <xs:sequence>
+             <xs:element name="volumeGroup" minOccurs="0" maxOccurs="unbounded">
+                <xs:complexType>
+                    <xs:sequence>
+                         <xs:element name="name" type="xs:token"/>
+                         <xs:element name="indexMin" type="xs:int" minOccurs="0" maxOccurs="1"/>
+                         <xs:element name="indexMax" type="xs:int" minOccurs="0" maxOccurs="1"/>
+                         <xs:element name="volume" type="volume" minOccurs="1" maxOccurs="unbounded"/>
+                     </xs:sequence>
+                </xs:complexType>
+                <xs:unique name="volumeAttributesUniqueness">
+                    <xs:selector xpath="volume"/>
+                    <xs:field xpath="deviceCategory"/>
+                </xs:unique>
+             </xs:element>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:complexType name="volumesType">
+        <xs:sequence>
+            <xs:element name="reference" type="volumeRef" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:complexType name="attributesRef">
+        <xs:sequence>
+            <xs:element name="reference" type="attributesRefType" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:complexType name="criteriaType">
+        <xs:sequence>
+            <xs:element name="criterion" type="criterionType" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="criterionType">
+        <xs:attribute name="name" type="xs:string" use="required"/>
+        <xs:attribute name="type" type="xs:string" use="required"/>
+        <xs:attribute name="default" type="xs:string" use="optional"/>
+    </xs:complexType>
+
+    <xs:complexType name="criterionTypesType">
+        <xs:sequence>
+            <xs:element name="criterion_type" type="criterionTypeType" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="criterionTypeType">
+        <xs:sequence>
+            <xs:element name="values" type="valuesType" minOccurs="0" maxOccurs="1"/>
+        </xs:sequence>
+        <xs:attribute name="name" type="xs:token" use="required"/>
+        <xs:attribute name="type" type="pfwCriterionTypeEnum" use="required"/>
+    </xs:complexType>
+
+    <xs:complexType name="valuesType">
+        <xs:sequence>
+            <xs:element name="value" type="valueType" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="valueType">
+        <xs:attribute name="literal" type="xs:string" use="required"/>
+        <xs:attribute name="numerical" type="xs:int" use="required"/>
+    </xs:complexType>
+
+    <xs:complexType name="attributesRefType">
+        <xs:sequence>
+            <xs:element name="Attributes" type="AttributesType" minOccurs="1" maxOccurs="1"/>
+        </xs:sequence>
+        <xs:attribute name="name" type="xs:token" use="required"/>
+    </xs:complexType>
+
+    <xs:complexType name="AttributesType">
+        <xs:sequence>
+            <xs:element name="ContentType" type="ContentTypeType" minOccurs="0" maxOccurs="1"/>
+            <xs:element name="Usage" type="UsageType" minOccurs="0" maxOccurs="1"/>
+            <xs:element name="Source" type="SourceType" minOccurs="0" maxOccurs="1"/>
+            <xs:element name="Flags" type="FlagsType" minOccurs="0" maxOccurs="1"/>
+            <xs:element name="Bundle" type="BundleType" minOccurs="0" maxOccurs="1"/>
+        </xs:sequence>
+        <xs:attribute name="attributesRef" type="xs:token" use="optional"/>
+        <!-- with xsd 1.1, it is impossible to make choice on either attributes or element...-->
+    </xs:complexType>
+
+    <xs:complexType name="ContentTypeType">
+        <xs:attribute name="value" type="contentType" use="required"/>
+    </xs:complexType>
+    <xs:complexType name="UsageType">
+        <xs:attribute name="value" type="usageEnumType" use="required"/>
+    </xs:complexType>
+    <xs:complexType name="SourceType">
+        <xs:attribute name="value" type="sourceEnumType" use="required"/>
+    </xs:complexType>
+    <xs:complexType name="FlagsType">
+        <xs:attribute name="value" type="flagsEnumType" use="required"/>
+    </xs:complexType>
+    <xs:complexType name="BundleType">
+        <xs:attribute name="key" type="xs:string" use="required"/>
+        <xs:attribute name="value" type="xs:string" use="required"/>
+    </xs:complexType>
+
+    <xs:complexType name="volume">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                Volume section defines a volume curve for a given use case and device category.
+                It contains a list of points of this curve expressing the attenuation in Millibels
+                for a given volume index from 0 to 100.
+                <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+                    <point>0,-9600</point>
+                    <point>100,0</point>
+                </volume>
+
+                It may also reference a reference/@name to avoid duplicating curves.
+                <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+                <reference name="DEFAULT_MEDIA_VOLUME_CURVE">
+                    <point>0,-9600</point>
+                    <point>100,0</point>
+                </reference>
+            </xs:documentation>
+        </xs:annotation>
+        <xs:sequence>
+            <xs:element name="point" type="volumePoint" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+        <xs:attribute name="deviceCategory" type="deviceCategory"/>
+        <xs:attribute name="ref" type="xs:token" use="optional"/>
+    </xs:complexType>
+
+    <xs:complexType name="volumeRef">
+        <xs:sequence>
+            <xs:element name="point" type="volumePoint" minOccurs="2" maxOccurs="unbounded"/>
+        </xs:sequence>
+        <xs:attribute name="name" type="xs:token" use="required"/>
+    </xs:complexType>
+
+    <xs:simpleType name="volumePoint">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                Comma separated pair of number.
+                The fist one is the framework level (between 0 and 100).
+                The second one is the volume to send to the HAL.
+                The framework will interpolate volumes not specified.
+                Their MUST be at least 2 points specified.
+            </xs:documentation>
+        </xs:annotation>
+        <xs:restriction base="xs:string">
+            <xs:pattern value="([0-9]{1,2}|100),-?[0-9]+"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+
+    <xs:simpleType name="streamsCsv">
+        <xs:list>
+            <xs:simpleType>
+                <xs:restriction base="stream">
+                </xs:restriction>
+            </xs:simpleType>
+        </xs:list>
+    </xs:simpleType>
+
+    <!-- Enum values of audio_stream_type_t in audio-base.h
+         TODO: avoid manual sync. -->
+    <xs:simpleType name="stream">
+        <xs:restriction base="xs:NMTOKEN">
+            <!--xs:pattern value="\c+(,\c+)*"/-->
+            <xs:enumeration value="AUDIO_STREAM_DEFAULT"/>
+            <xs:enumeration value="AUDIO_STREAM_VOICE_CALL"/>
+            <xs:enumeration value="AUDIO_STREAM_SYSTEM"/>
+            <xs:enumeration value="AUDIO_STREAM_RING"/>
+            <xs:enumeration value="AUDIO_STREAM_MUSIC"/>
+            <xs:enumeration value="AUDIO_STREAM_ALARM"/>
+            <xs:enumeration value="AUDIO_STREAM_NOTIFICATION"/>
+            <xs:enumeration value="AUDIO_STREAM_BLUETOOTH_SCO"/>
+            <xs:enumeration value="AUDIO_STREAM_ENFORCED_AUDIBLE"/>
+            <xs:enumeration value="AUDIO_STREAM_DTMF"/>
+            <xs:enumeration value="AUDIO_STREAM_TTS"/>
+            <xs:enumeration value="AUDIO_STREAM_ACCESSIBILITY"/>
+            <xs:enumeration value="AUDIO_STREAM_ASSISTANT"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:simpleType name="deviceCategory">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="DEVICE_CATEGORY_HEADSET"/>
+            <xs:enumeration value="DEVICE_CATEGORY_SPEAKER"/>
+            <xs:enumeration value="DEVICE_CATEGORY_EARPIECE"/>
+            <xs:enumeration value="DEVICE_CATEGORY_EXT_MEDIA"/>
+            <xs:enumeration value="DEVICE_CATEGORY_HEARING_AID"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:simpleType name="contentType">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="AUDIO_CONTENT_TYPE_UNKNOWN"/>
+            <xs:enumeration value="AUDIO_CONTENT_TYPE_SPEECH"/>
+            <xs:enumeration value="AUDIO_CONTENT_TYPE_MUSIC"/>
+            <xs:enumeration value="AUDIO_CONTENT_TYPE_MOVIE"/>
+            <xs:enumeration value="AUDIO_CONTENT_TYPE_SONIFICATION"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:simpleType name="usageEnumType">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="AUDIO_USAGE_UNKNOWN"/>
+            <xs:enumeration value="AUDIO_USAGE_MEDIA"/>
+            <xs:enumeration value="AUDIO_USAGE_VOICE_COMMUNICATION"/>
+            <xs:enumeration value="AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING"/>
+            <xs:enumeration value="AUDIO_USAGE_ALARM"/>
+            <xs:enumeration value="AUDIO_USAGE_NOTIFICATION"/>
+            <xs:enumeration value="AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE"/>
+            <xs:enumeration value="AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY"/>
+            <xs:enumeration value="AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE"/>
+            <xs:enumeration value="AUDIO_USAGE_ASSISTANCE_SONIFICATION"/>
+            <xs:enumeration value="AUDIO_USAGE_GAME"/>
+            <xs:enumeration value="AUDIO_USAGE_VIRTUAL_SOURCE"/>
+            <xs:enumeration value="AUDIO_USAGE_ASSISTANT"/>
+            <xs:enumeration value="AUDIO_USAGE_CALL_ASSISTANT"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:simpleType name="flagsEnumType">
+        <xs:list>
+            <xs:simpleType>
+                <xs:restriction base="flagType">
+                </xs:restriction>
+            </xs:simpleType>
+        </xs:list>
+    </xs:simpleType>
+
+    <xs:simpleType name="flagType">
+        <xs:restriction base="xs:NMTOKEN">
+            <xs:enumeration value="AUDIO_FLAG_NONE"/>
+            <xs:enumeration value="AUDIO_FLAG_AUDIBILITY_ENFORCED"/>
+            <xs:enumeration value="AUDIO_FLAG_SECURE"/>
+            <xs:enumeration value="AUDIO_FLAG_SCO"/>
+            <xs:enumeration value="AUDIO_FLAG_BEACON"/>
+            <xs:enumeration value="AUDIO_FLAG_HW_AV_SYNC"/>
+            <xs:enumeration value="AUDIO_FLAG_HW_HOTWORD"/>
+            <xs:enumeration value="AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY"/>
+            <xs:enumeration value="AUDIO_FLAG_BYPASS_MUTE"/>
+            <xs:enumeration value="AUDIO_FLAG_LOW_LATENCY"/>
+            <xs:enumeration value="AUDIO_FLAG_DEEP_BUFFER"/>
+            <xs:enumeration value="AUDIO_FLAG_NO_MEDIA_PROJECTION"/>
+            <xs:enumeration value="AUDIO_FLAG_MUTE_HAPTIC"/>
+            <xs:enumeration value="AUDIO_FLAG_NO_SYSTEM_CAPTURE"/>
+            <xs:enumeration value="AUDIO_FLAG_CAPTURE_PRIVATE"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:simpleType name="sourceEnumType">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="AUDIO_SOURCE_DEFAULT"/>
+            <xs:enumeration value="AUDIO_SOURCE_MIC"/>
+            <xs:enumeration value="AUDIO_SOURCE_VOICE_UPLINK"/>
+            <xs:enumeration value="AUDIO_SOURCE_VOICE_DOWNLINK"/>
+            <xs:enumeration value="AUDIO_SOURCE_VOICE_CALL"/>
+            <xs:enumeration value="AUDIO_SOURCE_CAMCORDER"/>
+            <xs:enumeration value="AUDIO_SOURCE_VOICE_RECOGNITION"/>
+            <xs:enumeration value="AUDIO_SOURCE_VOICE_COMMUNICATION"/>
+            <xs:enumeration value="AUDIO_SOURCE_REMOTE_SUBMIX"/>
+            <xs:enumeration value="AUDIO_SOURCE_UNPROCESSED"/>
+            <xs:enumeration value="AUDIO_SOURCE_VOICE_PERFORMANCE"/>
+            <xs:enumeration value="AUDIO_SOURCE_ECHO_REFERENCE"/>
+            <xs:enumeration value="AUDIO_SOURCE_FM_TUNER"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:simpleType name="pfwCriterionTypeEnum">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="inclusive"/>
+            <xs:enumeration value="exclusive"/>
+        </xs:restriction>
+    </xs:simpleType>
+</xs:schema>