Subject: Re: [linux-audio-dev] alsa and ... ?
From: dunk fordyce (him_AT_dunkfordyce.co.uk)
Date: Wed Jun 19 2002 - 19:40:19 EEST
ok jack looks good..
ill try that
thanks for all the help
On Wed, 19 Jun 2002 12:16:23 -0400
Paul Davis <pbd_AT_op.net> wrote:
> >im trying to write a sequencer using alsa .9 and c++
> >
> >at the moment all i want to do is trigger samples using a specific bpm
> >
> >at a later stage i may want to send out and recieve midi events
> >
> >is the alsa sequencer the right thing to use?
> >
> >can anyone point me at any examples or would u be kind enough to show me even
> >some pseudo code?
>
> check out rythmnlab or greenbox or any of the other rythmn boxes
> listed on dave phillips linux sound+midi pages.
>
> but please note something potentially really important. the design you
> use to do this when writing around a blocking i/o API like ALSA's PCM
> (audio) API is generally rather different than the one you use with a
> callback driven API like JACK, PortAudio or LADPSA.
>
> you may wish to consider very carefully whether you want to go down
> the pathway of using the ALSA PCM API. i say this because i ported
> rythmnlab to use JACK and it was quite hard to do. the math is really
> rather different between a case where you have control over how much
> audio you generate at a time and one where you don't.
>
> --p
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