[FFmpeg-devel] [PATCH] Moves yuv2yuvX_sse3 to yasm, unrolls main loop and other small optimizations for ~20% speedup.

[Alan Kelly]

The function was re-written in asm, this code is heavily derived from the
original code, the algorithm remains unchanged, the implementation is
optimized. Would you agree to adding the copyright from swscale.c:
* Copyright (C) 2001-2011 Michael Niedermayer <michaelni at gmx.at>
to this file, having both copyrights?  Thank you.


On Sat, Oct 31, 2020 at 1:02 PM Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:

> Am Di., 27. Okt. 2020 um 09:56 Uhr schrieb Alan Kelly
> <alankelly-at-google.com at ffmpeg.org>:
>
> > --- /dev/null
> > +++ b/libswscale/x86/yuv2yuvX.asm
> > @@ -0,0 +1,105 @@
> >
> +;******************************************************************************
> > +;* x86-optimized yuv2yuvX
> > +;* Copyright 2020 Google LLC
>
> Either the commit message ("move a function") or this
> copyright statement is wrong, please fix this.
>
> Please do not commit as-is...
>
> Carl Eugen
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