Add network latency to stats overlay

app/streaming/video/ffmpeg.cpp

@@ -482,15 +482,27 @@ void FFmpegVideoDecoder::stringifyVideoStats(VIDEO_STATS& stats, char* output)
     }
 
     if (stats.renderedFrames != 0) {
+        uint32_t rtt, variance;
+        char rttString[32];
+
+        if (LiGetEstimatedRttInfo(&rtt, &variance)) {
+            sprintf(rttString, "%u ms (variance: %u ms)", rtt, variance);
+        }
+        else {
+            sprintf(rttString, "N/A");
+        }
+
         offset += sprintf(&output[offset],
                           "Frames dropped by your network connection: %.2f%%\n"
                           "Frames dropped due to network jitter: %.2f%%\n"
+                          "Average network latency: %s\n"
                           "Average receive time: %.2f ms\n"
                           "Average decoding time: %.2f ms\n"
                           "Average frame queue delay: %.2f ms\n"
                           "Average rendering time (including monitor V-sync latency): %.2f ms\n",
                           (float)stats.networkDroppedFrames / stats.totalFrames * 100,
                           (float)stats.pacerDroppedFrames / stats.decodedFrames * 100,
+                          rttString,
                           (float)stats.totalReassemblyTime / stats.receivedFrames,
                           (float)stats.totalDecodeTime / stats.decodedFrames,
                           (float)stats.totalPacerTime / stats.renderedFrames,