diff --git a/media/libaudiohal/StreamHalHidl.h b/media/libaudiohal/StreamHalHidl.h
index a7df276..a69cce8 100644
--- a/media/libaudiohal/StreamHalHidl.h
+++ b/media/libaudiohal/StreamHalHidl.h
@@ -27,6 +27,7 @@
 #include <media/audiohal/StreamHalInterface.h>
 
 #include "ConversionHelperHidl.h"
+#include "StreamPowerLog.h"
 
 using ::android::hardware::audio::V2_0::IStream;
 using ::android::hardware::audio::V2_0::IStreamIn;
@@ -103,6 +104,9 @@
 
     bool requestHalThreadPriority(pid_t threadPid, pid_t threadId);
 
+    // mStreamPowerLog is used for audio signal power logging.
+    StreamPowerLog mStreamPowerLog;
+
   private:
     const int HAL_THREAD_PRIORITY_DEFAULT = -1;
     IStream *mStream;