Re: [fluid-dev] New voice overflow code committed

[Jim Henry]

On 8/1/2010 11:21 AM, David Henningsson wrote:
> 2010-08-01 19:00, Elimar Green skrev:
>    
> > On Sat, Jul 31, 2010 at 2:00 PM, David Henningsson
> > <address@hidden>  wrote:
> >      
> > > As a side note, I also added the possibility to have polyphony up to
> > > 65535 voices (which should be enough even for jOrgan users!) and that
> > > the polyphony can increase on-the-fly, which did not work before. Having
> > > so many voices might mean some overhead (and memory usage) even if
> > > they're not used though.
> > >        
> > I think the way it worked before (or at least should have worked) is
> > that the initial value for the polyphony set the maximum allowed value
> > (and the memory requirements), you could then adjust it to be less
> > than the system maximum.
> >      
> Actually synth->nvoices was set to synth->polyphony and not 4095 (the
> previous maximum).
>    
> > With this new change, does that mean that the memory allocation is
> > always for 64k voices?  That is probably a significant amount of
> > memory if so (64k * sizeof (FluidVoice) at least).
> >      
> The array will be reallocated, and new voices created, when the
> polyphony is updated.
There are at least 6 people testing the current version of FluidSynth 
using the Miditzer virtual theatre organ on Windows. The Miditzer 
doesn't use a wide variety of FluidSynth features but these testers 
should at least give the synthesis engine some pretty good exercise. The 
Miditzer uses an MSVC build of libfluidsynth.dll. I have discovered that 
it needs at least libglib-2.0-0.dll 
<http://site.virtualorgan.com/community/download/file.php?id=2008>, 
libgthread-2.0-0.dll 
<http://site.virtualorgan.com/community/download/file.php?id=2005>, and 
msvcr100.dll 
<http://site.virtualorgan.com/community/download/file.php?id=2006> as 
helpers. <http://site.virtualorgan.com/community/download/file.php?id=2006>

We have also discovered that there is probably something more required 
as a helper because when the polyphony is increased it causes a crash 
except on my development machine. To me that suggests that I have 
something on my machine that is not on the others. Can anyone make a 
suggestion of what that might be?

Thanks,
Jim Henry