giangiammy
Guest
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 Posted:
Thu Dec 01, 2005 5:16 pm Post subject:
Floating point DSP with GPL toolchain |
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Hi all,
For a project, I need to use a DSP with floating point
capbilities, using a GPL toolchain.
A good DSP with all the feature I need would be the
ADSP 21262, but the GPL toolchain has not a
complete support of his features, and it would a pity
to underuse it!
Does anyone has experience in using a floating
point DSP with GPL developing environment on
Linux?
thanks
giammy |
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Jim Thomas
Guest
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| Posted:
Fri Dec 02, 2005 5:16 pm Post subject:
Re: Floating point DSP with GPL toolchain |
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giangiammy wrote:
| Quote: | Hi all,
For a project, I need to use a DSP with floating point
capbilities, using a GPL toolchain.
A good DSP with all the feature I need would be the
ADSP 21262, but the GPL toolchain has not a
complete support of his features, and it would a pity
to underuse it!
Does anyone has experience in using a floating
point DSP with GPL developing environment on
Linux?
|
Again, if you want to take advantage of SIMD, you should use assembly.
I typically write C-callable assembly functions when I need the speed,
GPL or otherwise.
You get the best of both worlds this way. C for control and complicated
general-purpose stuff, and assembly for processing samples (my asm
functions always work on a block of samples rather than on a single
sample). So instead of this:
for(i=0; i<SIZE; i++)
{
*out++ = asm_function(*in++);
}
I write
asm_function(out, in, SIZE);
It's not that hard to write the asm functions.
--
Jim Thomas Principal Applications Engineer Bittware, Inc
jthomas@bittware.com http://www.bittware.com (603) 226-0404 x536
When you know how things work, the world is one big sandbox. - Avins |
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