Alex Loiko 37827c9058 Revert "ChannelStatistics used for RTP stats in VoipStatistics."
This reverts commit 444e04be6988fbdcc039d775481ac22481ff9ff4.

Reason for revert: breaks downstream project

Original change's description:
> ChannelStatistics used for RTP stats in VoipStatistics.
>
> - Added local and remote RTP statistics query API.
> - Change includes simplifying remote SSRC change handling
>   via received RTP and RTCP packets.
>
> Bug: webrtc:11989
> Change-Id: Ia3ee62c1191baaedc67e033ea3c661d8c9301abc
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/199060
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Reviewed-by: Sam Zackrisson <saza@webrtc.org>
> Commit-Queue: Tim Na <natim@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#32954}

TBR=mbonadei@webrtc.org,saza@webrtc.org,hta@webrtc.org,natim@webrtc.org

Change-Id: I5ce6a698c1216c7d56e32fce3308c16daac852f4
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:11989
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/201460
Reviewed-by: Alex Loiko <aleloi@google.com>
Commit-Queue: Alex Loiko <aleloi@google.com>
Cr-Commit-Position: refs/heads/master@{#32956}
2021-01-12 21:35:19 +00:00
..
2020-09-23 09:40:25 +00:00
2021-01-11 18:32:30 +00:00
2020-10-21 08:57:13 +00:00
2021-01-11 18:32:30 +00:00
2020-09-07 12:57:15 +00:00
2020-09-07 12:57:15 +00:00

How to write code in the api/ directory

Mostly, just follow the regular style guide, but:

  • Note that api/ code is not exempt from the “.h and .cc files come in pairs” rule, so if you declare something in api/path/to/foo.h, it should be defined in api/path/to/foo.cc.
  • Headers in api/ should, if possible, not #include headers outside api/. Its not always possible to avoid this, but be aware that it adds to a small mountain of technical debt that were trying to shrink.
  • .cc files in api/, on the other hand, are free to #include headers outside api/.

That is, the preferred way for api/ code to access non-api/ code is to call it from a .cc file, so that users of our API headers wont transitively #include non-public headers.

For headers in api/ that need to refer to non-public types, forward declarations are often a lesser evil than including non-public header files. The usual rules still apply, though.

.cc files in api/ should preferably be kept reasonably small. If a substantial implementation is needed, consider putting it with our non-public code, and just call it from the api/ .cc file.