[PD] [PD-announce] pd 0.44-0 test 1 released

[Roman Haefeli]

On Die, 2012-12-25 at 13:00 -0800, Miller Puckette wrote:
> Hi all -
> I'm afraid to 'fix' this riht now, but will look at it at least.  Alternatively
> I could add a message to pd to restort DSP without stopping/starting the
> audio I/O, which I'm hoping will at least reduce the need to start/stop
> SDP all the time.
> 
> The change that caused this problem is that I fixed Pd not to have the audio
> system open whern DSP isn't running so that, on APIs in which audio is exclusive
> (e.g., ALSA) you can turn DSP off in Pd and go off and use another device
> with Pd remining open.

The problem arises when there is one message trying to control many
different tasks:
 * switch DSP computing on/off (save CPU time)
 * free/occupy the audio back-end (save soundcard time)
 * mute/unmute Pd (save ears)
 * force recompilation of the DSP graph

> An alternative would be to have Pd automatically close audio devices on ALSA,
> OSS, and MMIO but always keep it open when using jack.  But then what about
> portaudio?  I somply don't know the correct way to deal with this.

I'd say it's preferable if Pd's behavior is independent from the
back-end currently in use. Rather, I suggest to use different messages
for different tasks. IMHO, 'dsp 0' really should only turn computation
of tilde-objects off as this is what it means and what one expects. What
about a new message to pd 'card 0|1' to free devices which would work
completely independently from 'dsp 0|1'? This would allow to record a
signal to a soundfile without occupying the soundcard, for instance.

Roman  


> And merry Christmas too...
> 
> On Mon, Dec 24, 2012 at 10:09:37PM +0100, IOhannes m zmölnig wrote:
> > On 12/22/2012 02:48, Miller Puckette wrote:
> > >Hi all,
> > >
> > >Pd version 0.44-0test1 is available on http://crca.ucsd.edu/~msp/software.htm
> > >or via git from sourceforge:
> > >   git clone git://pure-data.git.sourceforge.net/gitroot/pure-data/pure-data
> > >
> > 
> > 
> > cool, but...
> > 
> > >mostly audio, MIDI, scheduling, and OS compatibility bug fixes.
> > 
> > ...i'm unsure what to think about the current jack situation.
> > as it is (at least is in my cop of pd-0.44), taken from todays git),
> > if i turn on/off audio, the Pd-jack client appears/disappears.
> > roman reported this as a bug and i thought this was going to be
> > fixed for 0.44, but it seems that it is still there.
> > what are the plans for this?
> > 
> > 
> > fgamsdr
> > IOhannes
> > 
> > 
> > PS: merry christmas!
> > 
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