Sergio Garcia Murillo a77d615e10 Add tentative I422Rotate. ... When doing 90 or 270 degrees rotation we need to do a rotate&scale of the UV planes, as there are no helper optimized functions to do this, we use the Y plane as temporal memory and perform each of the transforms independently: First U plane is rotated, putting the result in the Y plane. After the rotation, the output has double the samples horizontally and half the samples vertically, so it is scaled into the final U plane. Same process is done with the V plane. Last the Y plane that can be just rotated without scaling. It would be great to have an optimized version for this, but maybe this is helpfull for triggering the discussions. Bug: libyuv:926 Change-Id: I188af103c4d0e3f9522021b4bf2b63c9d5de8b93 Reviewed-on: https://chromium-review.googlesource.com/c/libyuv/libyuv/+/3568424 Reviewed-by: Frank Barchard <fbarchard@chromium.org> Commit-Queue: Frank Barchard <fbarchard@chromium.org>		2022-04-06 23:49:35 +00:00
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libyuv	Add tentative I422Rotate.	2022-04-06 23:49:35 +00:00
libyuv.h	NV12 Copy, include scale_uv.h	2020-12-08 18:54:16 +00:00