Add a flags field to video timing extension.

webrtc/api/video/video_timing.cc

 /*
  *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/api/video/video_timing.h"
 
 #include <sstream>
 
 namespace webrtc {
 
 TimingFrameInfo::TimingFrameInfo()
     : rtp_timestamp(0),
       capture_time_ms(-1),
       encode_start_ms(-1),
       encode_finish_ms(-1),
       packetization_finish_ms(-1),
       pacer_exit_ms(-1),
       network_timestamp_ms(-1),
       network2_timestamp_ms(-1),
       receive_start_ms(-1),
       receive_finish_ms(-1),
       decode_start_ms(-1),
       decode_finish_ms(-1),
-      render_time_ms(-1) {}
+      render_time_ms(-1),
+      flags(TimingFrameFlags::kDefault) {}
 
 int64_t TimingFrameInfo::EndToEndDelay() const {
   return capture_time_ms >= 0 ? decode_finish_ms - capture_time_ms : -1;
 }
 
 bool TimingFrameInfo::IsLongerThan(const TimingFrameInfo& other) const {
   int64_t other_delay = other.EndToEndDelay();
   return other_delay == -1 || EndToEndDelay() > other_delay;
 }
 
+bool TimingFrameInfo::IsOutlier() const {
+  return flags & TimingFrameFlags::kTriggeredBySize;
+}
+
+bool TimingFrameInfo::IsInvalid() const {
+  return flags == TimingFrameFlags::kTriggeredBySize;
+}
+
 std::string TimingFrameInfo::ToString() const {
   std::stringstream out;
-  out << rtp_timestamp << ',' << capture_time_ms << ',' << encode_start_ms
-      << ',' << encode_finish_ms << ',' << packetization_finish_ms << ','
-      << pacer_exit_ms << ',' << network_timestamp_ms << ','
-      << network2_timestamp_ms << ',' << receive_start_ms << ','
-      << receive_finish_ms << ',' << decode_start_ms << ',' << decode_finish_ms
-      << ',' << render_time_ms;
+  if (IsInvalid()) {
+    out << "[Invalid]";
+  } else {
+    out << rtp_timestamp << ',' << capture_time_ms << ',' << encode_start_ms
+        << ',' << encode_finish_ms << ',' << packetization_finish_ms << ','
+        << pacer_exit_ms << ',' << network_timestamp_ms << ','
+        << network2_timestamp_ms << ',' << receive_start_ms << ','
+        << receive_finish_ms << ',' << decode_start_ms << ','
+        << decode_finish_ms << ',' << render_time_ms << ", outlier "
+        << IsOutlier();
+  }
   return out.str();
 }
 
 }  // namespace webrtc