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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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7
webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h
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@ -134,9 +134,10 @@ class VideoTimingExtension {
static constexpr const char* kUri =
"http://www.webrtc.org/experiments/rtp-hdrext/video-timing";
static bool Parse(rtc::ArrayView<const uint8_t> data, VideoTiming* timing);
static size_t ValueSize(const VideoTiming&) { return kValueSizeBytes; }
static bool Write(uint8_t* data, const VideoTiming& timing);
static bool Parse(rtc::ArrayView<const uint8_t> data,
VideoSendTiming* timing);
static size_t ValueSize(const VideoSendTiming&) { return kValueSizeBytes; }
static bool Write(uint8_t* data, const VideoSendTiming& timing);
static size_t ValueSize(uint16_t time_delta_ms, uint8_t idx) {
return kValueSizeBytes;