diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index c77f551..7e3b743 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -590,18 +590,22 @@
     return output;
 }
 
-status_t AudioSystem::startOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
+status_t AudioSystem::startOutput(audio_io_handle_t output,
+                                  AudioSystem::stream_type stream,
+                                  int session)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return PERMISSION_DENIED;
-    return aps->startOutput(output, stream);
+    return aps->startOutput(output, stream, session);
 }
 
-status_t AudioSystem::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
+status_t AudioSystem::stopOutput(audio_io_handle_t output,
+                                 AudioSystem::stream_type stream,
+                                 int session)
 {
     const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
     if (aps == 0) return PERMISSION_DENIED;
-    return aps->stopOutput(output, stream);
+    return aps->stopOutput(output, stream, session);
 }
 
 void AudioSystem::releaseOutput(audio_io_handle_t output)
@@ -666,6 +670,38 @@
     return aps->getStreamVolumeIndex(stream, index);
 }
 
+uint32_t AudioSystem::getStrategyForStream(AudioSystem::stream_type stream)
+{
+    const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+    if (aps == 0) return 0;
+    return aps->getStrategyForStream(stream);
+}
+
+audio_io_handle_t AudioSystem::getOutputForEffect(effect_descriptor_t *desc)
+{
+    const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+    if (aps == 0) return PERMISSION_DENIED;
+    return aps->getOutputForEffect(desc);
+}
+
+status_t AudioSystem::registerEffect(effect_descriptor_t *desc,
+                                audio_io_handle_t output,
+                                uint32_t strategy,
+                                int session,
+                                int id)
+{
+    const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+    if (aps == 0) return PERMISSION_DENIED;
+    return aps->registerEffect(desc, output, strategy, session, id);
+}
+
+status_t AudioSystem::unregisterEffect(int id)
+{
+    const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+    if (aps == 0) return PERMISSION_DENIED;
+    return aps->unregisterEffect(id);
+}
+
 // ---------------------------------------------------------------------------
 
 void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) {