tree ce95e04dc0d29a1571dbe8efacfbeba919ad23ba
parent c6521a73dda4ac7641fec9f04dab4b5ad301e5e7
author Artem Titov <titovartem@webrtc.org> 1547481244 +0100
committer Commit Bot <commit-bot@chromium.org> 1547488782 +0000

Introduce EncodedImageIdInjector.

EncodedImageIdInjector is responsible for injection of frame id into
encoded image before it will be sent to the transport layer. It will
help to track video frame from capturing on 1st peer side to rendering
on 2nd peer side and will make it possible to calculate video quality
stats between these frames.

This CL also introduces two different implementations for injector:
  1. DefaultEncodedImageIdInjector will prepend all encoded images with
     extra data and then will restore them on another side. This injector
     can work even if peers are running on different devices.
  2. SingleProcessEncodedImageIdInjector can work only when all peers
     are running in the same process, but won't use any extra data
     to propagate frame id between peers, so it won't affect any
     transport level metrics and bitrate estimator.

This CL is first part of new video quality analyzer for end-2-end
peer connection level test framework.

Bug: webrtc:10138
Change-Id: I77defc8e8c95cb244a695a9732980a47bd7a2e9b
Reviewed-on: https://webrtc-review.googlesource.com/c/116682
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Peter Slatala <psla@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26251}