diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 4037c46..9e3cb7f 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -139,6 +139,9 @@
 
     virtual int newAudioSessionId() = 0;
 
+    virtual void acquireAudioSessionId(int audioSession) = 0;
+    virtual void releaseAudioSessionId(int audioSession) = 0;
+
     virtual status_t queryNumberEffects(uint32_t *numEffects) = 0;
 
     virtual status_t queryEffect(uint32_t index, effect_descriptor_t *pDescriptor) = 0;