fix the bug of media thread. (#1215)

Author: ycyang1229

samples/Common.c

@@ -173,7 +173,8 @@ PVOID mediaSenderRoutine(PVOID customData)
     }
 
 CleanUp:
-
+    // clean the flag of the media thread.
+    ATOMIC_STORE_BOOL(&pSampleConfiguration->mediaThreadStarted, FALSE);
     CHK_LOG_ERR(retStatus);
     return NULL;
 }
@@ -877,32 +878,32 @@ STATUS getIceCandidatePairStatsCallback(UINT32 timerId, UINT64 currentTime, UINT
                       pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.nominated ? "nominated"
                                                                                                                       : "not nominated");
                 averageNumberOfPacketsSentPerSecond =
-                    (DOUBLE) (pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.packetsSent -
-                              pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfPacketsSent) /
+                    (DOUBLE)(pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.packetsSent -
+                             pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfPacketsSent) /
                     (DOUBLE) currentMeasureDuration;
                 DLOGD("Packet send rate: %lf pkts/sec", averageNumberOfPacketsSentPerSecond);
 
                 averageNumberOfPacketsReceivedPerSecond =
-                    (DOUBLE) (pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.packetsReceived -
-                              pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfPacketsReceived) /
+                    (DOUBLE)(pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.packetsReceived -
+                             pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfPacketsReceived) /
                     (DOUBLE) currentMeasureDuration;
                 DLOGD("Packet receive rate: %lf pkts/sec", averageNumberOfPacketsReceivedPerSecond);
 
-                outgoingBitrate = (DOUBLE) ((pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.bytesSent -
-                                             pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfBytesSent) *
-                                            8.0) /
+                outgoingBitrate = (DOUBLE)((pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.bytesSent -
+                                            pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfBytesSent) *
+                                           8.0) /
                     currentMeasureDuration;
                 DLOGD("Outgoing bit rate: %lf bps", outgoingBitrate);
 
-                incomingBitrate = (DOUBLE) ((pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.bytesReceived -
-                                             pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfBytesReceived) *
-                                            8.0) /
+                incomingBitrate = (DOUBLE)((pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.bytesReceived -
+                                            pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevNumberOfBytesReceived) *
+                                           8.0) /
                     currentMeasureDuration;
                 DLOGD("Incoming bit rate: %lf bps", incomingBitrate);
 
                 averagePacketsDiscardedOnSend =
-                    (DOUBLE) (pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.packetsDiscardedOnSend -
-                              pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevPacketsDiscardedOnSend) /
+                    (DOUBLE)(pSampleConfiguration->rtcIceCandidatePairMetrics.rtcStatsObject.iceCandidatePairStats.packetsDiscardedOnSend -
+                             pSampleConfiguration->sampleStreamingSessionList[i]->rtcMetricsHistory.prevPacketsDiscardedOnSend) /
                     (DOUBLE) currentMeasureDuration;
                 DLOGD("Packet discard rate: %lf pkts/sec", averagePacketsDiscardedOnSend);