Subject: Re: [linux-audio-dev] soft synth as a plugin
From: nikodimka (nikodimka_AT_yahoo.com)
Date: Fri Oct 18 2002 - 01:22:43 EEST
Oh yeah I forgot!
And there's another question I _realy_ want to know the answer for:
Until we have such instrument plugin API, what is the
right way to implement the the system
(30 softsynths working together)
with what we have
I mean a bunch of software synths /dev/midi -> /dev/dsp
Can I use these together right now?
Is there a right way to control them all via
a single sequencer and to get their output
into one place?
nikodimka
--- nick wrote:
> Hi
>
> IMO running each synth in its own thread with many synths going is
> definitely _not_ the way forward. The host should definitely be the only
> process, much how VST, DXi, pro tools et. al. work.
>
> No, there is no real "instrument" or "synth" plugin API. but since my
> original post I have been brewing something up. its quite vst-like in
> some ways, but ive been wanting to make it more elegant before
> announcing it. It does, however, work, and is totally C++ based ATM. You
> just inherit the "Instrument" class and voila. (ok, so it got renamed
> along the way)
>
> Although in light of Tommi's post (mastajuuri) i have to reconsider
> working on my API. My only problem with mastajuuri is its dependance on
> QT (if im not mistaken), sorry.
>
> If people would like to my work-in-progress, i could definitely use some
> feedback ;-)
>
> This discussion is open!
>
> -Nick
>
> On Thu, 2002-10-17 at 20:53, nikodimka wrote:
> >
> > Guys,
> >
> > This answer appeared just after I decided to ask the very same question.
> >
> > Is it true that there is no _common_ "instrument" or "synth" plugin API on linux?
> >
> > Is it true that there is no the same kind of media for out-of-process instruments?
> >
> > I see that there are some kinds of possible plugin APIs:
> > -- MusE's LADSPA extensions
> > -- mustajuuri plugin
> > -- maybe there's some more (MAIA? OX?)
> > -- I remember Juan Linietsky working on binding sequencer with softsynths
> > But I dont remember to hear anything about the results
> >
> > So can anyone _please_ answer:
> >
> > What is the right way to use the multiple (e.g. thirty)
> > softsynths together simultaneously with one host?
> > I mean working completely inside my computer
> > to have just one (or even none) midi keyboard as input.
> > So all the synthesys, mixing, processing goes on inside.
> > And to send one audio channel out to any sound card.
> >
> >
> > thanks,
> > nikodimka
> >
> >
> > =======8<==== Tommi Ilmonen wrote: ===8<=================
> >
> > Hi.
> >
> > Sorry to come in very late. The Mustajuuri plugin interface includes all
> > the bits you need. In fact I already have two synthesizer engines under
> > the hood.
> >
> > With Mustajuuri you can write the synth as a plugin and the host is only
> > responsible for delivering the control messages to it.
> >
> > Alternatively you could write a new voice type for the Mustajuuri synth,
> > which can lead to smaller overhead ... or not, depending on what you are
> > after.
> >
> > http://www.tml.hut.fi/~tilmonen/mustajuuri/
> >
> > On 3 Jul 2002, nick wrote:
> >
> > > Hi all
> > >
> > > I've been scratching my head for a while now, planning out how im going
> > > to write amSynthe (aka amSynth2)
> > >
> > > Ideally i don't want to be touching low-level stuff again, and it makes
> > > sense to write it as a plugin for some host. Obviously in the Win/Mac
> > > world theres VST/DXi/whatever - but that doesnt really concern me as I
> > > dont use em ;) I just want to make my music on my OS of choice..
> > >
> > > Now somebody please put me straight here - as far as I can see, there's
> > > LADSPA and JACK. (and MuSE's own plugins?). Now, I'm under the
> > > impression that these only deal with the audio data - only half what I
> > > need for a synth. Or can LADSPA deal with MIDI?
> > >
> > > So how should I go about it?
> > > Is it acceptable to (for example) read the midi events from the ALSA
> > > sequencer in the audio callback? My gut instinct is no, no, no!
> > >
> > > Even if that's feasible with the alsa sequencer, it still has problems -
> > > say the host wanted to "render" the `song' to an audio file - using the
> > > sequencer surely it would have to be done in real time?
> > >
> > > I just want to get on, write amSynthe and then everyone can enjoy it,
> > > but this hurdle is bigger than it seems.
> > >
> > > Thanks,
> > > Nick
> > >
> > >
> > > _________________________________________________________
> > > Do You Yahoo!?
> > > Get your free @yahoo.com address at http://mail.yahoo.com
> > >
> >
> > Tommi Ilmonen Researcher
> > >=> http://www.hut.fi/u/tilmonen/
> > Linux/IRIX audio: Mustajuuri
> > >=> http://www.tml.hut.fi/~tilmonen/mustajuuri/
> > 3D audio/animation: DIVA
> > >=> http://www.tml.hut.fi/Research/DIVA/
> >
> > __________________________________________________
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