On Tuesday 14 February 2006 20:59, Ben McAllister wrote:

> 1) "The default is 1024" - is this default (and other cmdline
> defaults) taken from SOLELY from .csoundrc, or is there another spot
> in addition to .csoundrc where these are defined i.e somewhere in the
> source?

The defaults are in the source code, and depend on platform. For example,
-B really defaults to 1024 on Linux, but the default is 4096 on MacOS X,
and 16384 on Windows (so that MME on Win9x will not have dropouts).
Of course, the settings in .csoundrc (if any) override these, and you can
set there whatever "default" you like.

> If so, could we externalize it all to .csoundrc?

So, what would happend then if .csoundrc is removed ? Some defaults
do need to be present in the source code.

> 2) I alluded to this question before, but now I'll ask it outright: 
> what is the expected behavior, on Windows, for the interaction between
> the control panel/driver for a given device, and this -B option.  I
> would expect the DMA buffer size for my device to be controlled by
> this setting, and it SOUNDS like it is, though the Control Panel UI
> for two different sound cards fails to update.

In the case of PortAudio, the -B parameter (more precisely, -B / sr) is
passed as the "suggested latency" value. Other than that, Csound has no
control over how PortAudio interprets the parameter.