diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 9ef1db7..ed1e6d1 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -1225,6 +1225,13 @@
     return aps->getMasterMono(mono);
 }
 
+float AudioSystem::getStreamVolumeDB(audio_stream_type_t stream, int index, audio_devices_t device)
+{
+    const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+    if (aps == 0) return NAN;
+    return aps->getStreamVolumeDB(stream, index, device);
+}
+
 // ---------------------------------------------------------------------------
 
 int AudioSystem::AudioPolicyServiceClient::addAudioPortCallback(
diff --git a/media/libaudioclient/IAudioPolicyService.cpp b/media/libaudioclient/IAudioPolicyService.cpp
index f0f413d..b72047b 100644
--- a/media/libaudioclient/IAudioPolicyService.cpp
+++ b/media/libaudioclient/IAudioPolicyService.cpp
@@ -19,6 +19,7 @@
 #include <utils/Log.h>
 
 #include <stdint.h>
+#include <math.h>
 #include <sys/types.h>
 
 #include <binder/Parcel.h>
@@ -77,6 +78,7 @@
     SET_AUDIO_PORT_CALLBACK_ENABLED,
     SET_MASTER_MONO,
     GET_MASTER_MONO,
+    GET_STREAM_VOLUME_DB
 };
 
 #define MAX_ITEMS_PER_LIST 1024
@@ -815,6 +817,20 @@
         }
         return status;
     }
+
+    virtual float getStreamVolumeDB(audio_stream_type_t stream, int index, audio_devices_t device)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
+        data.writeInt32(static_cast <int32_t>(stream));
+        data.writeInt32(static_cast <int32_t>(index));
+        data.writeUint32(static_cast <uint32_t>(device));
+        status_t status = remote()->transact(GET_STREAM_VOLUME_DB, data, &reply);
+        if (status != NO_ERROR) {
+            return NAN;
+        }
+        return reply.readFloat();
+    }
 };
 
 IMPLEMENT_META_INTERFACE(AudioPolicyService, "android.media.IAudioPolicyService");
@@ -1405,6 +1421,17 @@
             return NO_ERROR;
         } break;
 
+        case GET_STREAM_VOLUME_DB: {
+            CHECK_INTERFACE(IAudioPolicyService, data, reply);
+            audio_stream_type_t stream =
+                    static_cast <audio_stream_type_t>(data.readInt32());
+            int index = static_cast <int>(data.readInt32());
+            audio_devices_t device =
+                    static_cast <audio_devices_t>(data.readUint32());
+            reply->writeFloat(getStreamVolumeDB(stream, index, device));
+            return NO_ERROR;
+        }
+
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/media/libaudioclient/include/media/AudioSystem.h b/media/libaudioclient/include/media/AudioSystem.h
index 853d318..2875794 100644
--- a/media/libaudioclient/include/media/AudioSystem.h
+++ b/media/libaudioclient/include/media/AudioSystem.h
@@ -338,6 +338,9 @@
     static status_t setMasterMono(bool mono);
     static status_t getMasterMono(bool *mono);
 
+    static float    getStreamVolumeDB(
+            audio_stream_type_t stream, int index, audio_devices_t device);
+
     // ----------------------------------------------------------------------------
 
     class AudioPortCallback : public RefBase
diff --git a/media/libaudioclient/include/media/IAudioPolicyService.h b/media/libaudioclient/include/media/IAudioPolicyService.h
index d111fd2..ac71873 100644
--- a/media/libaudioclient/include/media/IAudioPolicyService.h
+++ b/media/libaudioclient/include/media/IAudioPolicyService.h
@@ -169,6 +169,8 @@
 
     virtual status_t setMasterMono(bool mono) = 0;
     virtual status_t getMasterMono(bool *mono) = 0;
+    virtual float    getStreamVolumeDB(
+            audio_stream_type_t stream, int index, audio_devices_t device) = 0;
 };
 
 
diff --git a/services/audiopolicy/AudioPolicyInterface.h b/services/audiopolicy/AudioPolicyInterface.h
index 60ed1d6..84e9426 100644
--- a/services/audiopolicy/AudioPolicyInterface.h
+++ b/services/audiopolicy/AudioPolicyInterface.h
@@ -241,6 +241,9 @@
 
     virtual status_t setMasterMono(bool mono) = 0;
     virtual status_t getMasterMono(bool *mono) = 0;
+
+    virtual float    getStreamVolumeDB(
+                audio_stream_type_t stream, int index, audio_devices_t device) = 0;
 };
 
 
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index e0ce2d6..732f711 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -3372,6 +3372,12 @@
     return NO_ERROR;
 }
 
+float AudioPolicyManager::getStreamVolumeDB(
+        audio_stream_type_t stream, int index, audio_devices_t device)
+{
+    return computeVolume(stream, index, device);
+}
+
 status_t AudioPolicyManager::disconnectAudioSource(const sp<AudioSourceDescriptor>& sourceDesc)
 {
     ALOGV("%s handle %d", __FUNCTION__, sourceDesc->getHandle());
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index c831d46..c62ba25 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -234,6 +234,8 @@
 
         virtual status_t setMasterMono(bool mono);
         virtual status_t getMasterMono(bool *mono);
+        virtual float    getStreamVolumeDB(
+                    audio_stream_type_t stream, int index, audio_devices_t device);
 
         // return the strategy corresponding to a given stream type
         routing_strategy getStrategy(audio_stream_type_t stream) const;
diff --git a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
index 1e63a05..8a2f1dc 100644
--- a/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyInterfaceImpl.cpp
@@ -769,4 +769,16 @@
     return mAudioPolicyManager->getMasterMono(mono);
 }
 
+
+float AudioPolicyService::getStreamVolumeDB(
+            audio_stream_type_t stream, int index, audio_devices_t device)
+{
+    if (mAudioPolicyManager == NULL) {
+        return NAN;
+    }
+    Mutex::Autolock _l(mLock);
+    return mAudioPolicyManager->getStreamVolumeDB(stream, index, device);
+}
+
+
 }; // namespace android
diff --git a/services/audiopolicy/service/AudioPolicyService.h b/services/audiopolicy/service/AudioPolicyService.h
index 9a083f4..2cd26ac 100644
--- a/services/audiopolicy/service/AudioPolicyService.h
+++ b/services/audiopolicy/service/AudioPolicyService.h
@@ -202,6 +202,9 @@
     virtual status_t setMasterMono(bool mono);
     virtual status_t getMasterMono(bool *mono);
 
+    virtual float    getStreamVolumeDB(
+                audio_stream_type_t stream, int index, audio_devices_t device);
+
             status_t doStopOutput(audio_io_handle_t output,
                                   audio_stream_type_t stream,
                                   audio_session_t session);