diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 06116a5..26a0bb2 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -399,6 +399,7 @@
         uint32_t                            mInSamplingRate;
         audio_format_t                      mInFormat;
         audio_channel_mask_t                mInChannelMask;
+        sp<AudioIoDescriptor> getIoDescriptor_l(audio_io_handle_t ioHandle);
     };
 
     class AudioPolicyServiceClient: public IBinder::DeathRecipient,