[FFmpeg-user] Filter documentation -- PTSs

[Chris Angelico]

On Tue, Feb 16, 2021 at 1:23 PM Mark Filipak (ffmpeg)
<markfilipak at bog.us> wrote:
>
> On 02/15/2021 08:54 PM, Chris Angelico wrote:
> > On Tue, Feb 16, 2021 at 12:45 PM Mark Filipak (ffmpeg)
> > <markfilipak at bog.us> wrote:
> -bigsnip-
> >> The rest of 'C' syntax, and precedent, and operators, etc. I know. It's just pointers that mystify
> >> me. Now I understand what a struct actually is but pointers?... not so much. I thought I understood,
> >> but '**' fuddled it. I'm afraid I'm one of the people who, for example, actually prefer BNF to
> >> textual descriptions.
> >
> > A pointer, ultimately, is just a number - the address of the next
> > thing. So the pointer-to-pointer is saying "at this address, you can
> > find the address you want".
> >
> > If this isn't helpful, feel free to ignore it; I'm sure there's BNF
> > around somewhere to explain it, but I'm not sure I could write it that
> > way, sorry.
>
> Hahaha... I brought up BNF just to illustrate how anal compulsive I am. For example, documentation
> that's just for my eyes is full of regex & BNF.
>
> You've given me a good push. Thanks so much. I hope I can pull a thorn out of your paw some day.

Or out of someone else's. Pass it forward, help the next person! :)
Happy to help!

ChrisA