Clean Up Playback Thread in DVR Test Implementation

Bug: 194476544
Test: atest VtsHalTvTunerV1_0TargetTest && atest
VtsHalTvTunerV1_1TargetTest

Change-Id: I639e8314a499c07758c4927fa10cb4ff0e6dcb50
diff --git a/tv/tuner/1.0/default/Dvr.h b/tv/tuner/1.0/default/Dvr.h
index fc4cb21..264268a 100644
--- a/tv/tuner/1.0/default/Dvr.h
+++ b/tv/tuner/1.0/default/Dvr.h
@@ -20,7 +20,9 @@
 #include <android/hardware/tv/tuner/1.0/IDvr.h>
 #include <fmq/MessageQueue.h>
 #include <math.h>
+#include <atomic>
 #include <set>
+#include <thread>
 #include "Demux.h"
 #include "Frontend.h"
 #include "Tuner.h"
@@ -119,7 +121,6 @@
      * Each filter handler handles the data filtering/output writing/filterEvent updating.
      */
     void startTpidFilter(vector<uint8_t> data);
-    static void* __threadLoopPlayback(void* user);
     static void* __threadLoopRecord(void* user);
     void playbackThreadLoop();
     void recordThreadLoop();
@@ -133,7 +134,7 @@
     DvrSettings mDvrSettings;
 
     // Thread handlers
-    pthread_t mDvrThread;
+    std::thread mDvrThread;
 
     // FMQ status local records
     PlaybackStatus mPlaybackStatus;
@@ -141,7 +142,7 @@
     /**
      * If a specific filter's writing loop is still running
      */
-    bool mDvrThreadRunning;
+    std::atomic<bool> mDvrThreadRunning;
     bool mKeepFetchingDataFromFrontend;
     /**
      * Lock to protect writes to the FMQs
@@ -152,7 +153,6 @@
      */
     std::mutex mPlaybackStatusLock;
     std::mutex mRecordStatusLock;
-    std::mutex mDvrThreadLock;
 
     const bool DEBUG_DVR = false;
 };