[FFmpeg-devel] Re: [Question] Learning about VVC and wasm

[Sidd via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

Ok I misunderstood about the decoder part.

Sorry I am new to mailing lists am not sure what top-posting means, if
I have not abided by any rules I do apologize and will refrain from
doing so

On Thu, Nov 13, 2025 at 11:40 PM Frank Plowman via ffmpeg-devel
<ffmpeg-devel@ffmpeg.org> wrote:
>
> On 13/11/2025 17:56, Sidd via ffmpeg-devel wrote:
> > Hi Frank,
> >
> > Thanks for the reply, it seems like there is a lot for me to cover.
> >
> > Regarding the assembly, since FFmpeg is known for handcrafting it, are
> > there any references of help in their docs regarding this? I have gone
> > through their ASM lessons and know the basics of them but am quite far
> > from being good at writing it. And if I may ask, what exactly are the
> > current drawbacks of the current C implementation?
> >
> > Thank you for taking your time to answer my questions.
> >
>
> The assembly lessons are the only "intro to SIMD" resource specifically
> for FFmpeg that I know of, but I'm sure you can find more stuff by
> googling.  A more practical resource for x86 specifically is [1] on
> x86inc.asm.  I think the most important thing is to practice.  Yes, the
> learning curve is steep.  I can't say I'm very good at writing SIMD.
>
> I'm not quite sure what you mean by "drawbacks of the current C
> implementation" -- as opposed to what?  As I said, the C high-level
> decoder logic is in a good state, but the decoder is quite slow and
> needs more ASM to make it faster.
>
> Nit: top-posting is discouraged on mailing lists such as ffmpeg-devel.
>
> [1]
> https://blogs.gnome.org/rbultje/2017/07/14/writing-x86-simd-using-x86inc-asm/
>
> --
> All the best,
> Frank_______________________________________________
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