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Report timing frames info in GetStats.

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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}
This commit is contained in:
ilnik
2017-07-06 03:06:50 -07:00
committed by Commit Bot
parent 5b7fc8ce42
commit 2edc6845ac
34 changed files with 376 additions and 67 deletions
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10
webrtc/video/payload_router.cc
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@ -132,11 +132,13 @@ EncodedImageCallback::Result PayloadRouter::OnEncodedImage(
rtp_video_header.content_type = encoded_image.content_type_;
if (encoded_image.timing_.is_timing_frame) {
rtp_video_header.video_timing.encode_start_delta_ms =
VideoTiming::GetDeltaCappedMs(encoded_image.capture_time_ms_,
encoded_image.timing_.encode_start_ms);
VideoSendTiming::GetDeltaCappedMs(
encoded_image.capture_time_ms_,
encoded_image.timing_.encode_start_ms);
rtp_video_header.video_timing.encode_finish_delta_ms =
VideoTiming::GetDeltaCappedMs(encoded_image.capture_time_ms_,
encoded_image.timing_.encode_finish_ms);
VideoSendTiming::GetDeltaCappedMs(
encoded_image.capture_time_ms_,
encoded_image.timing_.encode_finish_ms);
rtp_video_header.video_timing.packetization_finish_delta_ms = 0;
rtp_video_header.video_timing.pacer_exit_delta_ms = 0;
rtp_video_header.video_timing.network_timstamp_delta_ms = 0;