[pulseaudio-discuss] PulseAudio, PortAudio or what to use as application developer?

[Jonas Finnemann Jensen]

> With this patch applied, you app should work nicely with the following
> pipeline:
>
> App -> PortAudio -> Alsa -> Pulse -> Sound H/W -> Ears -> Brain
>
Well, then I could just go with PortAudio and rely on Ubuntu to patch their
thing someday :)

Lennart wrote a nice article about Audio APIs recently:
> http://0pointer.de/blog/projects/guide-to-sound-apis.html
>
> May make for some nice reading :)
>
Thanks, I've been looking for something like that...

--
Regards Jonas Finnemann Jensen.


On Tue, Jan 27, 2009 at 13:34, Colin Guthrie <gmane at colin.guthr.ie> wrote:

> 'Twas brillig, and Jonas Finnemann Jensen at 27/01/09 11:18 did gyre and
> gimble:
> > Hi,
> >
> > I don't know if this is the right list to post this question, if not I'm
> > very sorry and feel free to ignore me :)
> > (I think maybe this should have gone to PortAudio list, but it's down
> > for the moment).
> >
> > I'm doing a free platform independent application in C# using mono...
> > Now I wish to do audio playback, so far I've found some C# bindings for
> > PortAudio, and as far as I can see it should be easy to include and
> > distribute PortAudio in a windows release...
> >
> > However, I'm running Ubuntu 8.10, and when playing music with PortAudio
> > other applications can't play anything... I think this is because
> > PortAudio uses ALSA directly...
>
> This shouldn't be a problem as alsa can be directed to pulseaudio.
>
> I'm going to hazard a guess and say that Ubuntu probably hasn't included
> Kevin Kofler's patches in their portaudio package that makes it play
> nice with the alsa->pulse plugin? You should look in the Fedora or
> Mandriva portaudio packages for this patch. I'm not sure if it's gone
> upstream.
>
>
> http://svn.mandriva.com/cgi-bin/viewvc.cgi/packages/cooker/portaudio/current/SOURCES/portaudio-19-alsa_pulse.patch?revision=313993&view=markup
>
> With this patch applied, you app should work nicely with the following
> pipeline:
>
> App -> PortAudio -> Alsa -> Pulse -> Sound H/W -> Ears -> Brain
>
> > I'd admit that I don't know much about audio playback and sound
> > architecture... But should I be using PulseAudio instead of PortAudio,
> > or should I use some specific backend in PortAudio, or a specific
> > setting for ALSA when using it from PortAudio?
> >
> > What is the most portable and easy way to audio playback, from the
> > applications developers perspective?
> > And how do I avoid blocking other applications from playing sounds?
>
> Lennart wrote a nice article about Audio APIs recently:
> http://0pointer.de/blog/projects/guide-to-sound-apis.html
>
> May make for some nice reading :)
>
> Col
>
> --
>
> Colin Guthrie
> gmane(at)colin.guthr.ie
> http://colin.guthr.ie/
>
> Day Job:
>   Tribalogic Limited [http://www.tribalogic.net/]
> Open Source:
>   Mandriva Linux Contributor [http://www.mandriva.com/]
>   PulseAudio Hacker [http://www.pulseaudio.org/]
>   Trac Hacker [http://trac.edgewall.org/]
>
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>
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