Evan Shrubsole 84995439fd Add NV12 video buffer type
This will allow incoming NV12 frames to be encodable by libvpx without
requiring a conversion to I420 before encoding. NV12 is supported in
libvpx https://chromium.googlesource.com/webm/libvpx/+/master/CHANGELOG

Bug: webrtc:11916
Change-Id: I30e9c42c0607bee07691930c0248921bba09134c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/183720
Reviewed-by: Niels Moller <nisse@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#32061}
2020-09-09 15:26:02 +00:00
..
2020-09-09 15:26:02 +00:00
2020-08-20 17:10:02 +00:00
2019-06-03 08:15:09 +00:00
2020-03-24 15:14:09 +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.