commit 2edc6845ac12a7216aeb84d9ad9da8260e2bb434
author ilnik <ilnik@webrtc.org> Thu Jul 06 10:06:50 2017
committer Commit Bot <commit-bot@chromium.org> Thu Jul 06 10:06:50 2017
tree 44e4aad158f693f2ff03c48e2817aefc73aacaa3
parent 5b7fc8ce424490ccf3229c855facdef78e6cb615

Report timing frames info in GetStats.

Some frames are already marked as 'timing frames' via video-timing RTP header extension. Timestamps along full WebRTC pipeline are gathered for these frames. This CL implements reporting of these timestamps for a single
timing frame since the last GetStats(). The frame with the longest end-to-end delay between two consecutive GetStats calls is reported.

The purpose of this timing information is not to provide a realtime statistics but to provide debugging information as it will help identify problematic places in video pipeline for outliers (frames which took longest to process).

BUG=webrtc:7594

Review-Url: https://codereview.webrtc.org/2946413002
Cr-Commit-Position: refs/heads/master@{#18909}

webrtc/modules/video_coding/timing.h

diff --git a/webrtc/modules/video_coding/timing.h b/webrtc/modules/video_coding/timing.h
index bfd6778..82252bf 100644
--- a/webrtc/modules/video_coding/timing.h
+++ b/webrtc/modules/video_coding/timing.h
@@ -102,6 +102,9 @@
                           int* min_playout_delay_ms,
                           int* render_delay_ms) const;
 
+  void SetTimingFrameInfo(const TimingFrameInfo& info);
+  rtc::Optional<TimingFrameInfo> GetTimingFrameInfo();
+
   enum { kDefaultRenderDelayMs = 10 };
   enum { kDelayMaxChangeMsPerS = 100 };
 
@@ -131,6 +134,7 @@
   int current_delay_ms_ GUARDED_BY(crit_sect_);
   int last_decode_ms_ GUARDED_BY(crit_sect_);
   uint32_t prev_frame_timestamp_ GUARDED_BY(crit_sect_);
+  rtc::Optional<TimingFrameInfo> timing_frame_info_ GUARDED_BY(crit_sect_);
 
   // Statistics.
   size_t num_decoded_frames_ GUARDED_BY(crit_sect_);