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Subject: Re: WAV Codec for Archos

Re: WAV Codec for Archos

From: [IDC]Dragon <>
Date: Thu, 26 Jan 2006 11:35:53 +0100 (MET)

> Aren't most of the existing plugins just developer toys? ;-)
> (Just kidding!)

Offense taken.

> From what you're writing it seems to me that you already did some
> testing with the codec. Is that right? What are the results?

No, I didn't, only read the datasheet.

> > A similar problem exists for the disk I/O, here we have to endian swap
> byte
> > pairs. Archos unfortunately wired the 16 bit data bus directly 1:1, not
> > taking into account that IDE is little endian and the SH CPU is big
> endian.
> Isn't there the same problem when playing/recording MP3 data? Or does
> the built-in MP3 codec take care of this?

Yes, and that's a reason to tackle both at once: squeeze the bitswap to the
output stage, buffer the data as-is.

> I don't think that my idea is too bad at all, since e.g. the video
> plugin does in a way exactly the same (processing data that cannot be
> handled by the Rockbox CPU simply outside of the unit.)

Don't tell me, I wrote that plugin and the authoring procedure. Not many
people (or nobody?) is using that seriously, for good reason.

> I just think that the goal shouldn't
> be set too high for the start and that the code can be improved once the
> basic things are running.

True, I was talking about the far end goal, or what I would view as my goal.


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Received on 2006-01-26

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