Re: Re: External PCM plugin SDK

Re: Re: External PCM plugin SDK

[Peter Zubaj]

Looks like your oss plugin saved lot of 4Front time. :-)

Peter Zubaj



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>>> POZOR ZMENA - KONCERT PRESUNUTY NA 28.2.2005
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Re: Re: External PCM plugin SDK

[Takashi Iwai]

At Wed, 9 Feb 2005 16:35:46 +0100,
Peter Zubaj wrote:
> 
> Looks like your oss plugin saved lot of 4Front time. :-)

Well, don't expect that it works flawlessly :)
It's just a proof of concept how crazy you can set up a system.
For example, you can do like the following with these plugins:

OSS app -> aoss wrapper -> ALSA JACK plugin - > JACK client ->
  JACK server -> ALSA OSS plugin -> OSS kernel emulation ->
  ALSA kernel driver


Takashi


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External PCM plugin SDK

[Takashi Iwai]

Hi,

I now commited a patch to add the external PCM plugin SDK to
alsa-lib.  This allows you to create ALSA PCM plugin outside the
alsa-lib tree.  It's still a draft version, and currently only the I/O
plugin (e.g. for implementation of user-space driver) is provided.
The filter-type plugin SDK (e.g. for effects) and the control plugin
SDK will follow later.

No documentation yet.  Look at the code :)

Example I/O plugins are found in alsa-plugins tree.  So far, two
plugins, OSS and JACK plugins.  The former one is the plugin to
emulate ALSA API with the OSS driver.  The latter is almost identical
with the one in alsa-lib/src/pcm/ext.

I think this SDK can be used for better implementaion of BT-SCO and
FireWire.

Note that the sync of CVS tree on sourceforge is often delayed.
If you don't see it on anon tree, please wait for a while...


Takashi


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Re: External PCM plugin SDK

[Alexander E. Patrakov]

Takashi Iwai wrote:

> Example I/O plugins are found in alsa-plugins tree.  So far, two
> plugins, OSS and JACK plugins.  The former one is the plugin to
> emulate ALSA API with the OSS driver.  The latter is almost identical
> with the one in alsa-lib/src/pcm/ext.

Does the existence of the OSS plugin mean that dmix now exists e.g. for
FreeBSD?

-- 
Alexander E. Patrakov



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Re: Re: External PCM plugin SDK

[Takashi Iwai]

At Wed, 09 Feb 2005 20:28:09 +0500,
Alexander E. Patrakov wrote:
> 
> Takashi Iwai wrote:
> 
> > Example I/O plugins are found in alsa-plugins tree.  So far, two
> > plugins, OSS and JACK plugins.  The former one is the plugin to
> > emulate ALSA API with the OSS driver.  The latter is almost identical
> > with the one in alsa-lib/src/pcm/ext.
> 
> Does the existence of the OSS plugin mean that dmix now exists e.g. for
> FreeBSD?

No, it doesn't work since the required features are missing in OSS.


Takashi


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