[vorbis-dev] Feedback on Ogg Speex file format
Segher Boessenkool
segher at chello.nl
Thu Aug 15 17:14:30 PDT 2002
> >So granulepos actually is the number of the first sample _not_
> >decodable using only this page and all pages before it? Except
> >if adding this page to the ones before it would not increase
> >the number of samples decodable, in which case we set granulepos
> >to -1? Oh, and special cases for begin/end of stream, of course.
> >
> >Something is redundant here, or very convoluted, at least ;)
>
> No, it's the number of the last sample decodable from this page.
> Yes, it counts from 1, not 0 (because 0 is a valid value to mean
> 'no samples decodable yet', as the headers have).
Same thing, really.
>
> By the way, rehuff seems to produce horribly screwed up streams
> with granulepos == -1 on every page (or at least most of them).
> You should probably fix that.
Heh yeah. I use libogg, and I thought that would automatically do
the right thing, but of course I need to set correct granulepos
on the ogg_packet's I feed it. Not that it itself sets it on the
packets it feeds _me_, but erm ;)
Thanks for the reminder,
<p>Segher
<p>--- >8 ----
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