[PD-dev] low priority array operations

[cyrille henry]

hello,

sorry if I missunderstood, but : what's the differences with vasp?

cvs\externals\grill\vasp\readme.txt :

"VASP is a package for PD or MaxMSP consisting of a number of externals 
extending
these systems with functions for non-realtime array-based audio data 
processing.
VASP is capable of working in the background, therefore not influencing 
eventual
dsp signal processing."

cyrille


Tim Blechmann wrote:

> hi all,
> 
> i'm currently investigating the possibilities of making pd's array
> operations threadsafe to avoid audio dropouts...
> 
> apart from objects that fill arrays in realtime, there are two
> possibilities of working on arrays:
> - soundfiler
> - messages to arrays
> 
> one of pd's language basics is that messages should be processed at
> once. the problem of this is, that if the array operation takes too
> long, it results an audio dropout.
> 
> my proposal:
> we could implement two different behaviours for messages to arrays and
> the soundfiler:
> - the soundfiler works in a low priority thread on the array,
>   syncronizing with the patch by a message to the outlet of the
>   soundfiler when done...
> - messages to arrays should be processed at once and may result audio
>   dropouts
> this way, we won't have to break with pd's message handling ...
> 
> to achieve this, we will definitely have to add a thread lock for
> arrays. i'm willing to implement that, but i'd like to hear, what the
> other developers think about that...
> 
> cheers...
> 
>  Tim                          mailto:TimBlechmann at gmx.de
>                               ICQ: 96771783
> --
> The only people for me are the mad ones, the ones who are mad to live,
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> 
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