[Tremor] changes for subversion

[Pete]

Monty,

I would be very curious to see the c54x port of Tremor.  Would it be possible
for you to email me a copy of the source?  Do you know how many MIPs it takes
to decode a q4 stream on the c54x?  

I am still working on porting Tremor to the TI c55x.  I have to say it would be
nice if "64-bit-less" and "alloca-less" code could be introduced into
subversion.  Maybe macros that resolve to simple assigment and comparison could
be defined for those platforms that can do 64-bit math.  While making all those
changes for my platform was straightforward, it was time-consuming.

The problem I am having now is deciding which "ints" really need to be 32 bits
(since the "int" I am dealing with now is only 16.)  This part is more
difficult because I am not sure.  Most of the function return codes seem to be
OK as ints, its the function parameters and structure members I am less sure
about.  If anyone could share this information that would be great!

 - Pete

--- Monty <xiphmont at xiph.org> wrote:
> 
> On Tue, Nov 30, 2004 at 01:34:47PM -0800, Pete wrote:
> > Hello all!  What is the procedure for getting changes into Subversion?  Who
> > manages the lowmem branch?  
> > 
> > I am also curious why it seems like many people are doing the same porting
> work
> > on Tremor, yet no one contributes their ported code.  Is this a sign that
> > Tremor is dying, or just that different companies are trying to protect
> their
> > intellectual property?
> 
> Most likely the latter.  Also, Tremor was never intended to be a
> finished 'product'; it is and always was, 'a good place to start a
> porting effort'.  DSPs have quite a few highly esoteric architectures
> that can't be adaquately captured in a single, common C sourcebase.
> The result of a porting effort to a typical DSP family is a ball of
> code that is not only useless on any other processor, but also usually
> very tightly tailored to run under a specific embedded OS in a single
> hardware product.
> 
> I'm going to be tossing the TI c54 port of tremor into SVN soon (I
> have no reason not to), but you'll notice it's not only very specific
> to a single processor, it also strongly reflects the biases of the
> specific piece of hardware it was written for (the Neuros).
> 
> Monty
> 


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