[fix] use shared ptr to create real time clock

src/channel/rtp_channel/rtp_video_receiver.cpp

@@ -20,7 +20,7 @@ RtpVideoReceiver::RtpVideoReceiver()
           [this](int64_t bitrate_bps, std::vector<uint32_t> ssrcs) {
             SendRemb(bitrate_bps, ssrcs);
           }),
-      clock_(Clock::GetRealTimeClock()) {}
+      clock_(Clock::GetRealTimeClockShared()) {}
 
 RtpVideoReceiver::RtpVideoReceiver(std::shared_ptr<IOStatistics> io_statistics)
     : io_statistics_(io_statistics),
@@ -33,7 +33,7 @@ RtpVideoReceiver::RtpVideoReceiver(std::shared_ptr<IOStatistics> io_statistics)
           [this](int64_t bitrate_bps, std::vector<uint32_t> ssrcs) {
             SendRemb(bitrate_bps, ssrcs);
           }),
-      clock_(Clock::GetRealTimeClock()) {
+      clock_(Clock::GetRealTimeClockShared()) {
   rtcp_thread_ = std::thread(&RtpVideoReceiver::RtcpThread, this);
 
 #ifdef SAVE_RTP_RECV_STREAM

src/qos/clock.cc

@@ -60,4 +60,8 @@ Clock* Clock::GetRealTimeClock() {
   static Clock* const clock = new RealTimeClock();
   return clock;
 }
+
+std::shared_ptr<Clock> Clock::GetRealTimeClockShared() {
+  return std::make_shared<RealTimeClock>();
+}
 }  // namespace webrtc

src/qos/clock.h

@@ -66,6 +66,7 @@ class Clock {
 
   // Returns an instance of the real-time system clock implementation.
   static Clock* GetRealTimeClock();
+  static std::shared_ptr<Clock> GetRealTimeClockShared();
 };
 
 }  // namespace webrtc