Ying Wang 419e48fbc5 Compute the scale factor in int_64.
This avoid overflow when handling large input sizes, e.g.2016x1512, or 2592x1944.

Bug: webrtc:15030
Change-Id: I97d5fa163ce0fac4c47f21826656819e652efafe
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/300240
Commit-Queue: Ying Wang <yinwa@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39774}
2023-04-06 03:55:35 +00:00
..
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