diff --git a/libs/audioflinger/AudioFlinger.h b/libs/audioflinger/AudioFlinger.h
index 4ba5977..65c148e 100644
--- a/libs/audioflinger/AudioFlinger.h
+++ b/libs/audioflinger/AudioFlinger.h
@@ -245,6 +245,7 @@
             virtual status_t    start() = 0;
             virtual void        stop() = 0;
                     sp<IMemory> getCblk() const;
+                    audio_track_cblk_t* cblk() const { return mCblk; }
 
         protected:
             friend class ThreadBase;
@@ -260,10 +261,6 @@
             virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0;
             virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
 
-            audio_track_cblk_t* cblk() const {
-                return mCblk;
-            }
-
             int format() const {
                 return mFormat;
             }
@@ -528,6 +525,7 @@
     private:
 
         friend class AudioFlinger;
+        friend class OutputTrack;
         friend class Track;
         friend class TrackBase;
         friend class MixerThread;