From 274c1dc545c315bd24d6f778798028ec661749ef Mon Sep 17 00:00:00 2001
From: philipel <philipel@webrtc.org>
Date: Wed, 4 May 2016 06:21:01 -0700
Subject: [PATCH] Added flag for FEC for video_loopback.

Review-Url: https://codereview.webrtc.org/1937983002
Cr-Commit-Position: refs/heads/master@{#12626}
---
 webrtc/video/video_loopback.cc     | 6 +++++-
 webrtc/video/video_quality_test.cc | 9 +++++++++
 webrtc/video/video_quality_test.h  | 1 +
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/webrtc/video/video_loopback.cc b/webrtc/video/video_loopback.cc
index 87aacc6755..0974d5869f 100644
--- a/webrtc/video/video_loopback.cc
+++ b/webrtc/video/video_loopback.cc
@@ -178,6 +178,8 @@ DEFINE_bool(send_side_bwe, true, "Use send-side bandwidth estimation");
 
 DEFINE_bool(allow_reordering, false, "Allow packet reordering to occur");
 
+DEFINE_bool(use_fec, false, "Use forward error correction.");
+
 DEFINE_string(
     force_fieldtrials,
     "",
@@ -216,7 +218,9 @@ void Loopback() {
        flags::MaxBitrateKbps() * 1000, flags::Codec(),
        flags::NumTemporalLayers(), flags::SelectedTL(),
        0,  // No min transmit bitrate.
-       call_bitrate_config, flags::FLAGS_send_side_bwe},
+       call_bitrate_config,
+       flags::FLAGS_send_side_bwe,
+       flags::FLAGS_use_fec},
       {flags::Clip()},
       {},  // Screenshare specific.
       {"video", 0.0, 0.0, flags::DurationSecs(), flags::OutputFilename(),
diff --git a/webrtc/video/video_quality_test.cc b/webrtc/video/video_quality_test.cc
index 3f5f37ebd3..78d8845ffd 100644
--- a/webrtc/video/video_quality_test.cc
+++ b/webrtc/video/video_quality_test.cc
@@ -1127,6 +1127,15 @@ void VideoQualityTest::RunWithVideoRenderer(const Params& params) {
   video_send_config_.local_renderer = local_preview.get();
   video_receive_configs_[stream_id].renderer = loopback_video.get();
 
+  if (params.common.fec) {
+    video_send_config_.rtp.fec.red_payload_type = kRedPayloadType;
+    video_send_config_.rtp.fec.ulpfec_payload_type = kUlpfecPayloadType;
+    video_receive_configs_[stream_id].rtp.fec.red_payload_type =
+      kRedPayloadType;
+    video_receive_configs_[stream_id].rtp.fec.ulpfec_payload_type =
+      kUlpfecPayloadType;
+  }
+
   if (params_.screenshare.enabled)
     SetupScreenshare();
 
diff --git a/webrtc/video/video_quality_test.h b/webrtc/video/video_quality_test.h
index b476004aae..e138a89a8c 100644
--- a/webrtc/video/video_quality_test.h
+++ b/webrtc/video/video_quality_test.h
@@ -41,6 +41,7 @@ class VideoQualityTest : public test::CallTest {
 
       Call::Config::BitrateConfig call_bitrate_config;
       bool send_side_bwe;
+      bool fec;
     } common;
     struct {  // Video-specific settings.
       std::string clip_name;