[PD-dev] preparing phasor~&Co. for double precision Pd

[IOhannes m zmölnig]

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On 07/28/2011 02:15 AM, katja wrote:
> I was looking for a suitable spot in the code to do this. First looked at
> dac~, but since there may be many dac~s instantiated this is not most
> efficient. Then I found sys_send_dacs(), where the integrated sample values
> are checked for max absolute value. It is however not possible to do a
> simple typecast here because samples are just stored back into *sys_soundin
> and *sys_soundout which are type t_sample. Maybe dac~ should integrate
> samplevalues in an intermediate vector of type t_sample. And then, in
> sys_send_dacs(),
> integrated samples could be checked, cast to float and stored into
> *sys_soundout
> vector of type float. And something similar for the input. That's what I'll
> try.
> 

imho, the only sensible place to do this is the actual audio backend
code (s_audio_*.c), since your audio backend might support double floats
(e.g. jackd is prepared for that already, though i don't known whether
anybody ever used it that way).

you don't want to do the calculations in double, then convert to single
only to output as double, do you?

fgmadr
IOhannes
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