commit f412976eca10676cdd3bae5c17de52729d1284b9
author Henrik Boström <hbos@webrtc.org> Mon Mar 22 09:22:54 2021
committer Commit Bot <commit-bot@chromium.org> Mon Mar 22 11:09:36 2021
tree f8383bbfc9d13aaa1e3653ff1e46b417b52b7a4f
parent 50d79babcd37e0de20d9333f6dee9c789dc841e7

Provide a default implementation of NV12BufferInterface::CropAndScale.

This avoids falling back on the VideoFrameBuffer::CropAndScale default
implementation which performs ToI420. This has two major benefits:
1. We save CPU by not converting to I420 for NV12 frames.
2. We make is possible for simulcast encoders to use Scale() and be
   able to trust that the scaled simulcast layers have the same pixel
   format as the top layer, which is required by libvpx.

In order to invoke NV12Buffer::CropAndScaleFrom() without introducing a
circular dependency, nv12_buffer.[h/cc] is moved to the "video_frame"
build target.

Bug: webrtc:12595, webrtc:12469
Change-Id: I81aac5c6b3e81c49f32a7be6dc2640e6b40f7692
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/212643
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33521}