commit 536378bf37c7c7624832e4deabd4fcf032ebcefb
author philipel <philipel@webrtc.org> Tue May 31 10:20:23 2016
committer Commit bot <commit-bot@chromium.org> Tue May 31 10:20:28 2016
tree fae8205bc9df3c897753d030bf64649d9b9c05d0
parent 6c2eab34f8ff1f7a724622e3473858a4c0724bd8

Allow FakeNetworkPipe to drop packets in bursts.

The fake network pipe will still only drop packets at an average rate of
|loss_percent| but in bursts at an average length specified by
|avg_burst_loss_length|.

Also added the flag -avg_burst_loss_length to video loopback.

BUG=

Review-Url: https://codereview.webrtc.org/1995683003
Cr-Commit-Position: refs/heads/master@{#12969}

webrtc/video/video_loopback.cc

diff --git a/webrtc/video/video_loopback.cc b/webrtc/video/video_loopback.cc
index 0974d58..70a940d 100644
--- a/webrtc/video/video_loopback.cc
+++ b/webrtc/video/video_loopback.cc
@@ -101,6 +101,11 @@
   return static_cast<int>(FLAGS_loss_percent);
 }
 
+DEFINE_int32(avg_burst_loss_length, 1, "Average burst length of lost packets.");
+int AvgBurstLossLength() {
+  return static_cast<int>(FLAGS_avg_burst_loss_length);
+}
+
 DEFINE_int32(link_capacity,
              0,
              "Capacity (kbps) of the fake link. 0 means infinite.");
@@ -201,6 +206,7 @@
 void Loopback() {
   FakeNetworkPipe::Config pipe_config;
   pipe_config.loss_percent = flags::LossPercent();
+  pipe_config.avg_burst_loss_length = flags::AvgBurstLossLength();
   pipe_config.link_capacity_kbps = flags::LinkCapacityKbps();
   pipe_config.queue_length_packets = flags::QueueSize();
   pipe_config.queue_delay_ms = flags::AvgPropagationDelayMs();