[sane-devel] Byte ordering

[Ralph Little]

Hi,

On Tue, Jun 3, 2025 at 11:36 PM <sane-devel at symme.link> wrote:

> On Tue, Jun 03, 2025 at 10:00:45PM -0700, Ralph Little wrote:
> > On Tue, Jun 3, 2025 at 9:54 PM James Ring <sjr at jdns.org> wrote:
> > > On Tue, Jun 3, 2025 at 9:46 PM Ralph Little <skelband at gmail.com>
> wrote:
> > >> Someone has asked the question about byte order in multi-byte image
> data
> > >> that we might get from a SANE backend.
>
> Hi, it's me, I had the question.
>
> > >> It is not enough to assume the local machine byte order since we may
> get
> > >> data through the net backend from a remote machine with a different
> byte
> > >> order.
>
> The `net` backend explicitly swaps to local machine byte order:
>
> https://gitlab.com/sane-project/backends/-/blob/master/backend/net.c?ref_type=heads#L2356-2362
>
> So, it does seem like the de facto standard is that backends produce
> data in local machine byte order.
>
> (The protocol documentation reinforces this as a standard:
>

Agreed. Perhaps this is something we should add to the SANE API
specification?
Allan, do you concur?

Cheers,
Ralph
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