emu10k1: Loading DSP patches

emu10k1: Loading DSP patches

[Boris Shingarov]

Hi,

I am trying to learn how to write a DSP patch, and I have some success
when using the creative driver.  I am much more interested in getting
it to work with alsa, however.  I think I am just dumb, as I can't
figure out what is the correct way to load a binary patch in alsa.
I understand creative's dspmgr will not work, but what is used instead?
There obviously should be *some* way, as otherwise what would be the
point of having an alsa as10k1?





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Re: emu10k1: Loading DSP patches

[Takashi Iwai]

Hi,

At Mon, 05 Aug 2002 05:56:43 -0400,
Boris Shingarov wrote:
> 
> I am trying to learn how to write a DSP patch, and I have some success
> when using the creative driver.  I am much more interested in getting
> it to work with alsa, however.  I think I am just dumb, as I can't
> figure out what is the correct way to load a binary patch in alsa.

no, it's not your fault, you just hit a wrong place :)
the dsp patch management is not implemented well on alsa, and one of
the TODO's.

so far, only very basic functions are implemented.
you can load dsp codes via ioctl through hwdep, but it's not a patch,
i.e. you need to load the whole image.


> I understand creative's dspmgr will not work, but what is used instead?
> There obviously should be *some* way, as otherwise what would be the
> point of having an alsa as10k1?

alsa version's as10k1 exists in alsa-tools package.  but i'm not sure
whether it works currently...


Takashi


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