Speex dev - Aug 2004 - Decoding .spx with 1.0 on ppc produces noise!

> 
> Well, wav's are considered little endian but for raw files, there's
a
> command-like switch to specify either little-endian or big-endian (--le
> and --be).
        so if somone is streaming a speex encoded file to me, how
do I work out if its a bigendian or a little endia stream before
I begin decoding ... Is there something in the speex header? ( I
couldn't see it) or would this be communicated to the decoder end
in say the Ogg header used to wrap speex in?

        My apologies if these are obvious questions.

kind regards,

Kaveh.

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> 	I had a similar question ... is the endian-ness of the encoded
> speex file, system dependent? or is it always little endian?  If it's
> always little endian (like the header seems to be) then big endian
> machines (or java) will need to map everything to bigendian before
> decoding ...
Well, wav's are considered little endian but for raw files, there's a
command-like switch to specify either little-endian or big-endian (--le
and --be).

        Jean-Marc


-- 
Jean-Marc Valin, M.Sc.A.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

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> > Well, wav's are considered little endian but for raw files,
there's a
> > command-like switch to specify either little-endian or big-endian
(--le
> > and --be).
> 
> 	so if somone is streaming a speex encoded file to me, how
> do I work out if its a bigendian or a little endia stream before
> I begin decoding ... Is there something in the speex header? ( I
> couldn't see it) or would this be communicated to the decoder end
> in say the Ogg header used to wrap speex in?
No, the --be and --le are encoder switches that apply when the encoder
input is raw PCM. A Speex file is "endian independent" and should
decode
on all platforms. In this case there's a problem with decoding on PPC
which is probably a bug in speexdec.

        Jean-Marc


-- 
Jean-Marc Valin, M.Sc.A.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

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