[Speex-dev] Speex on DSPic, violation of license?

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Sun Oct 7 16:31:18 PDT 2007

Hi David,

Glad to know you're working on this? What's the status of that? Does it
run on a dsPIC yet? Do you have any code yet that is worth merging? It's
good when things can be merged early; otherwise it takes much more
effort as the codebases diverge. In some cases, I actually don't even
mind merging code that doesn't work/compile -- as long as it's
platform-specific code that doesn't break things that worked before.


David Willmore wrote:
> On 10/1/07, Jean-Marc Valin <jean-marc.valin at usherbrooke.ca> wrote:
>> I'm aware of Microchip's closed-source port of Speex to the dsPIC. As
>> far as I know (haven't checked the details), this is perfectly legal,
>> even though I think it's a dumb decision for a company that's in the
>> business of selling chips. I say it's dumb because by not contributing
>> the changes back, they ended up not benefiting from significant
>> improvements I made to Speex since their forked. Had they done so, the
>> memory requirement for Speex on dsPIC would be smaller than what they
>> have now and the quality would likely be better. In case there are any
>> dsPIC developers around, you should know that the current Speex svn/git
>> version (or 1.2beta2) now has small enough RAM requirement to fit on the
>> dsPIC, so it probably wouldn't be too hard to create an open-source port
>> that's actually better (and of course cheaper) than what Microchip sells.
> There are a couple of us working on it.  We're both also radio amateurs, so
> we hope to keep our work completly free--so it can be used in open standard
> software for amateur radio--as well as whatever else people feel like using
> it in.  Our code will make its way back into the main tree.
> Jean-Marc,  all of your hard work in reducing memory footprint and CPU usage
> is wonderful.  Thank you, very much.
> Cheers,
> David n0ymv

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