[linux-audio-dev] PTAF link and comments

[Nathaniel Virgo]

On Monday 03 February 2003 3:26 pm, ian wrote:
> On Mon, 3 Feb 2003, Steve Harris wrote:
> > > 	* No mix output mode; only replace. More overhead...
> >
> > But how many hosts use mix? As a plugin author, having to implement both
> > is a pain. I use code generation to make both functions.
>
> Mix is very useful for hosts that are running a lot of plugins. Take for
> example a modular soft synth. You can save a lot of memory by having
> plugins mix into buffers rather than allocating an output buffer for each
> plugin. It's not really that much effort to write a mix function as well
> as a replace function when you compare it to the actual plugin development
> time. I would be very sorry to see it go, as it would mean people would be
> able to get less out of their hardware.
> Ian

Indeed, and using code generation to get both isn't too hard.  If you're 
using C++ you can do it with templates (see the latest version of cmt for 
some LADSPA plugins I wrote that do this in an admittedly hacky way)