what is the opus version in webrtc?

[Andrew Wang]

Hi,

I download webrtc/m79, and check the verion of opus codec. There is README.chromium in opus folder. The file's content is:

Name: opus
URL: https://git.xiph.org/?p=opus.git;a=snapshot;h=3fe744ea04fdcc418fb85c2c133d13372ebb019b;sf=tgz
Version: 3fe744ea04fdcc418fb85c2c133d13372ebb019b
License: BSD
License File: src/COPYING
Security Critical: yes

Description:
This directory contains a copy of Opus library

This library is used by Chrome Remote Desktop and WebRTC for audio stream
encoding/decoding.

Local changes:
* copy .gitignore from https://git.xiph.org/?p=opus.git;a=tree
* set 'x' flags: "chmod 750 win32/genversion.bat"
* Apply https://git.xiph.org/?p=opus.git;a=commitdiff;h=46560534fcb5710a894a341c2f9526db58fd7087#patch1
* Apply https://github.com/xiph/opus/pull/73
* Apply https://github.com/xiph/opus/pull/87
* Make sure HB_gain is not NaN in an attempt to fix chromium:826914
* Saturate add to avoid int overflow to fix chromium:842528. This should be
  reverted when updating to v1.3
* Apply https://github.com/xiph/opus/commit/4f4b11c2398e96134dc62ee794bfe33ecd6e9bd2
* Apply https://git.xiph.org/?p=opus.git;a=commit;h=812ae3fb5c589aaafe761b8ebf86bcbbb8f0ed76
* Apply https://git.xiph.org/?p=opus.git;a=commit;h=cd529ed
* Apply https://github.com/xiph/opus/commit/cdaf661e8d3e85770bf06db8cff12ae6be7fa2a6

I download opus codec from opus official website via git clone, and reset its version to 3fe744ea04fdcc418fb85c2c133d13372ebb019b using the following command:

git reset --hard 3fe744ea04fdcc418fb85c2c133d13372ebb019b

I use winmerge to compare two opus projects, where there is difference.

Why is there difference? Is version information wrong in README.chromium?

Thanks

Regards

Andrew