Rename symbols to be more consistent

Bug: 37153050
Test: builds OK
Change-Id: I7e55a03ca8e1f22901db6c8f6f2ad32e4c95a0cd
diff --git a/media/libaudioclient/include/AudioMixer.h b/media/libaudioclient/include/AudioMixer.h
index 87ada76..2bd2d01 100644
--- a/media/libaudioclient/include/AudioMixer.h
+++ b/media/libaudioclient/include/AudioMixer.h
@@ -286,7 +286,7 @@
         process_hook_t  hook;   // one of process__*, never NULL
         int32_t         *outputTemp;
         int32_t         *resampleTemp;
-        NBLog::Writer*  mLog;
+        NBLog::Writer*  mNBLogWriter;   // associated NBLog::Writer or &mDummyLog
         int32_t         reserved[1];
         // FIXME allocate dynamically to save some memory when maxNumTracks < MAX_NUM_TRACKS
         track_t         tracks[MAX_NUM_TRACKS] __attribute__((aligned(32)));
@@ -301,9 +301,11 @@
 
     const uint32_t  mSampleRate;
 
-    NBLog::Writer   mDummyLog;
+    NBLog::Writer   mDummyLogWriter;
 public:
-    void            setLog(NBLog::Writer* log);
+    // Called by FastMixer to inform AudioMixer of it's associated NBLog::Writer.
+    // FIXME It would be safer to use TLS for this, so we don't accidentally use wrong one.
+    void            setNBLogWriter(NBLog::Writer* log);
 private:
     state_t         mState __attribute__((aligned(32)));
 
diff --git a/media/libaudioprocessing/AudioMixer.cpp b/media/libaudioprocessing/AudioMixer.cpp
index a7d9f0f..23513c9 100644
--- a/media/libaudioprocessing/AudioMixer.cpp
+++ b/media/libaudioprocessing/AudioMixer.cpp
@@ -115,7 +115,7 @@
     mState.hook         = process__nop;
     mState.outputTemp   = NULL;
     mState.resampleTemp = NULL;
-    mState.mLog         = &mDummyLog;
+    mState.mNBLogWriter = &mDummyLogWriter;
     // mState.reserved
 
     // FIXME Most of the following initialization is probably redundant since
@@ -146,9 +146,9 @@
     delete [] mState.resampleTemp;
 }
 
-void AudioMixer::setLog(NBLog::Writer *log)
+void AudioMixer::setNBLogWriter(NBLog::Writer *logWriter)
 {
-    mState.mLog = log;
+    mState.mNBLogWriter = logWriter;
 }
 
 static inline audio_format_t selectMixerInFormat(audio_format_t inputFormat __unused) {