commit ef377ec6d56533ed51d6b5d595b0c3d3afd6745d
author Erik Språng <sprang@webrtc.org> Mon Jun 15 08:43:22 2020
committer Commit Bot <commit-bot@chromium.org> Mon Jun 15 10:11:09 2020
tree 573b943c1108ccb8a4e55efdf87d2528a1493e04
parent ce971b0f10c6c84f8e4c080514065e8899805ec7

Revert "VP9 decoder: Sets thread count based on resolution, reinit on change."

This reverts commit d5925756980f6e82a55f57532c8d855e954459fb.

Reason for revert: May cause crashes.

Original change's description:
> VP9 decoder: Sets thread count based on resolution, reinit on change.
> 
> Previously, number of decoder threads for VP9 were always set to 8 but
> with a cap at number of cores. This was done since we "can't know" the
> resolution that will be used.
> 
> With this change, we now intialize the number of threads based on
> resolution given in InitDecode(). If a resolution change happens in
> flight, it requires a keyframe. We therefore parse the header from
> any key frame and if it has a new resolution, we re-initialize the
> decoder.
> 
> The number of threads used is based on pixel count. We set one thread
> as target for 1280x720, and scale up lineraly from there. The 8-thread
> cap is gone, but still limit it core count.
> 
> This means for instance: 1 <= 720p, 2 for 1080p, 4 for 1440p, 9 for 4K.
> 
> Bug: webrtc:11551
> Change-Id: I14c169a6c651c50bd1b870c4b22bc4495c8448fd
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174460
> Commit-Queue: Erik Språng <sprang@webrtc.org>
> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#31507}

TBR=ilnik@webrtc.org,sprang@webrtc.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: webrtc:11551
Change-Id: Id235c8ded83b3e1fc1d132c8f56c9f20001f6f22
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/177242
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Commit-Queue: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31521}