Tracks: log internalTrackId in metrics

This makes associating tracks in the audioflinger dumpsys
with metrics logging easier.

Test: adb shell dumpsys media.metrics
Bug: 181242710
Change-Id: Ic7e3c35765bad786f5a97c06152da786b78c8aa8
diff --git a/services/audioflinger/TrackMetrics.h b/services/audioflinger/TrackMetrics.h
index af16448..7fb69be 100644
--- a/services/audioflinger/TrackMetrics.h
+++ b/services/audioflinger/TrackMetrics.h
@@ -67,7 +67,7 @@
         mIntervalStartTimeNs = systemTime();
     }
 
-    void logConstructor(pid_t creatorPid, uid_t creatorUid,
+    void logConstructor(pid_t creatorPid, uid_t creatorUid, int32_t internalTrackId,
             const std::string& traits = {},
             audio_stream_type_t streamType = AUDIO_STREAM_DEFAULT) const {
         // Once this item is logged by the server, the client can add properties.
@@ -78,6 +78,7 @@
             .set(AMEDIAMETRICS_PROP_ALLOWUID, (int32_t)creatorUid)
             .set(AMEDIAMETRICS_PROP_EVENT,
                     AMEDIAMETRICS_PROP_PREFIX_SERVER AMEDIAMETRICS_PROP_EVENT_VALUE_CTOR)
+            .set(AMEDIAMETRICS_PROP_INTERNALTRACKID, internalTrackId)
             .set(AMEDIAMETRICS_PROP_TRAITS, traits);
         // log streamType from the service, since client doesn't know chosen streamType.
         if (streamType != AUDIO_STREAM_DEFAULT) {
diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index 86c92ea..5454778 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -724,7 +724,7 @@
 
     // Once this item is logged by the server, the client can add properties.
     const char * const traits = sharedBuffer == 0 ? "" : "static";
-    mTrackMetrics.logConstructor(creatorPid, uid, traits, streamType);
+    mTrackMetrics.logConstructor(creatorPid, uid, id(), traits, streamType);
 }
 
 AudioFlinger::PlaybackThread::Track::~Track()
@@ -2421,7 +2421,7 @@
 #endif
 
     // Once this item is logged by the server, the client can add properties.
-    mTrackMetrics.logConstructor(creatorPid, uid);
+    mTrackMetrics.logConstructor(creatorPid, uid, id());
 }
 
 AudioFlinger::RecordThread::RecordTrack::~RecordTrack()
@@ -2984,7 +2984,7 @@
         mPid(pid), mSilenced(false), mSilencedNotified(false)
 {
     // Once this item is logged by the server, the client can add properties.
-    mTrackMetrics.logConstructor(creatorPid, uid);
+    mTrackMetrics.logConstructor(creatorPid, uid, id());
 }
 
 AudioFlinger::MmapThread::MmapTrack::~MmapTrack()