[SWLUG] OGG on Sony W810i phone?

[Emyr Derfel]

I'd say that MP3 has a stonger piracy-link in its public image; OGG
tends only to be used by Linux users anyway, who like to find
alternatives rather than steal...

Em

(sorry for the double post, Dave)

On 7/4/06, Dave Cridland <dave at cridland.net> wrote:
> On Tue Jul  4 16:56:40 2006, Jonathan Wright wrote:
> > Dave Cridland wrote:
> >> For bizarre reasons I have yet to understand, mobile phone people
> >> are not yet shipping Ogg or Vorbis support. Perhaps it's more CPU
> >> intensive to decode than MP3, or something - mobile phone people
> >> are universally paranoid of anything touching battery life.
> >
> > From what I understand (and it's not a lot :) is that OGG required
> > floating-point operations to decode correctly. MP3 (and IIRC, ACC
> > and WMA) don't - they just need integer maths.
> >
> >
> Ah.
>
>
> > As a consequence, the processors that they needs are much simpler,
> > smaller, less powerful, but more importantly, cheaper. As there
> > isn't much call for OGG, there isn't much need to add the more
> > expensive variant.
> >
> >
> Well, every mobile device out there, pretty well, uses ARM. I don't
> even know if they do floating point.
>
> But more interestingly, they all have to do TLS, etc, as a matter of
> course, which is pretty CPU intensive, yet mobile phones have never
> included crypto processors, which are, so I'm told, dirt cheap these
> days.
>
> Personally, I suspect the mobile crowd of being deeply weird again.
> ("But mobile is a special environment, which has new challenges" gets
> raised a lot. The new challenges are flaky connectivity, low
> bandwidth, and poor CPU. Anyone who owned a 286 and a modem probably
> notes that these new challenges seem remarkably like the old ones,
> but that's purely imaginary.)
>
> I do note that the new 770 release also doesn't do Ogg, still. This
> may be because of an ARM not being good enough (although nobody seems
> to complain about putting an Ogg decoder on it as third party), but
> equally it might be because they don't want to be forced by example
> to put one on mobiles.
>
>
> > I think there has been a lot of move to create an integer-only
> > decoder for OGG's, but I don't know how successfully this was/has
> > been.
>
> The other likely reason is that Ogg is perceived to have a
> relationship with illegal music sharing, or worse, fair use.
>
> Dave.
> --
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