From: Andreas Pehrson <apehrson@mozilla.com>
Date: Thu, 6 Jan 2022 00:16:00 +0000
Subject: Bug 1748458 - Add TRACE_EVENT for keyframe requests. r=bwc

Differential Revision: https://phabricator.services.mozilla.com/D135113
Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/5b2a7894ef1cf096d0e8977754507c0820e757fc
---
 video/rtp_video_stream_receiver2.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/video/rtp_video_stream_receiver2.cc b/video/rtp_video_stream_receiver2.cc
index d9f7fcbe95..d13e4448b4 100644
--- a/video/rtp_video_stream_receiver2.cc
+++ b/video/rtp_video_stream_receiver2.cc
@@ -744,6 +744,12 @@ void RtpVideoStreamReceiver2::OnRtpPacket(const RtpPacketReceived& packet) {
 
 void RtpVideoStreamReceiver2::RequestKeyFrame() {
   RTC_DCHECK_RUN_ON(&worker_task_checker_);
+  TRACE_EVENT2("webrtc", "RtpVideoStreamReceiver2::RequestKeyFrame",
+               "remote_ssrc", config_.rtp.remote_ssrc, "method",
+               keyframe_request_method_ == KeyFrameReqMethod::kPliRtcp   ? "PLI"
+               : keyframe_request_method_ == KeyFrameReqMethod::kFirRtcp ? "FIR"
+               : keyframe_request_method_ == KeyFrameReqMethod::kNone ? "None"
+                                                                      : "Other");
   // TODO(bugs.webrtc.org/10336): Allow the sender to ignore key frame requests
   // issued by anything other than the LossNotificationController if it (the
   // sender) is relying on LNTF alone.