[PD-dev] Can somebody help to create a desktop / VST / AU version of a PD / libPD / app ?
danomatika at gmail.com
Wed Apr 22 00:00:15 CEST 2015
Following up from the dev list last year, I added your multi instance test to the c samples included with libpd: https://github.com/libpd/libpd/tree/master/samples/c_samples/multi <https://github.com/libpd/libpd/tree/master/samples/c_samples/multi>
The one thing I want to double check is the changes to z_libpd.c you mentioned in http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html: <http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html:>
> Here's how I modified libpd_wrapper/z_libpd.c:
> < sys_time = 0;
> < sched_tick(sys_time + sys_time_per_dsp_tick);
> < sched_tick(sys_time + sys_time_per_dsp_tick); \
> sched_tick(); \
Currently, that line is https://github.com/libpd/libpd/blob/master/libpd_wrapper/z_libpd.c#L171 <https://github.com/libpd/libpd/blob/master/libpd_wrapper/z_libpd.c#L171> and I’m getting a segfault if I replace it with sched_tick(); AND set gcc optimization to -O3
Here’s a gdb backtrace:
#0 0x0000000100091f2f in outlet_float (x=0x3f7ffc2a3f7ffc38, f=0.999937057) at m_obj.c:388
#1 0x00000001000ac572 in pdfloat_bang (x=0x10021ac20) at x_connective.c:89
#2 0x0000000100093d58 in pd_bang (x=0x10021ac20) at m_pd.c:267
#3 0x0000000100091ddd in outlet_bang (x=0x10021ae20) at m_obj.c:363
#4 0x00000001000c45e4 in metro_tick (x=0x10021ada0) at x_time.c:162
#5 0x0000000100095021 in sched_tick () at m_sched.c:418
#6 0x00000001000c5d4d in libpd_process_float (ticks=1, inBuffer=0x7fff5fbffa50, outBuffer=0x7fff5fbff750) at z_libpd.c:173
#7 0x0000000100000d18 in main ()
If I don’t optimize, it works fine:
1.000000 1.000000 0.999999 0.999999 0.999998 0.999998 0.999997 0.999997
1.000000 1.000000 0.999998 0.999998 0.999996 0.999996 0.999995 0.999995
0.999944 0.999944 0.999943 0.999943 0.999942 0.999942 0.999941 0.999941
0.999815 0.999815 0.999810 0.999810 0.999804 0.999804 0.999799 0.999799
> On Apr 21, 2015, at 10:56 AM, Kjetil Matheussen <k.s.matheussen at gmail.com> wrote:
> But for libpd, are you sure you need to add anything? Can't just the user
> call the pdinstance_new and pd_setinstance functions directly?
> http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html <http://lists.puredata.info/pipermail/pd-dev/2014-05/019832.html>
> (BTW. When I wrote about libpds, I hadn't forgotten about the support for pd instances,
> but since I didn't have all details in my head then, I didn't mention it. I should have though.)
> On Tue, Apr 21, 2015 at 4:42 PM, Dan Wilcox <danomatika at gmail.com <mailto:danomatika at gmail.com>> wrote:
> This should be possible with the current version of libpd which includes Miller’s multiple instance updates, see http://lists.puredata.info/pipermail/pd-dev/2014-05/019839.html <http://lists.puredata.info/pipermail/pd-dev/2014-05/019839.html>
> I just haven’t gotten around to adding libpd-specific wrapper functions for this yet, but Miller provides code in that dev list exchange.
> Dan Wilcox
> danomatika.com <http://danomatika.com/>
> robotcowboy.com <http://robotcowboy.com/>
>> On Apr 21, 2015, at 6:00 AM, pd-dev-request at lists.iem.at <mailto:pd-dev-request at lists.iem.at> wrote:
>> From: Oliver Greschke <info at o-g-sus.de <mailto:info at o-g-sus.de>>
>> Subject: [PD-dev] Can somebody help to create a desktop / VST / AU version of a PD / libPD / app ?
>> Date: April 21, 2015 at 3:15:44 AM EDT
>> To: pd-dev at lists.iem.at <mailto:pd-dev at lists.iem.at>
>> I am the creator of the Elastic Drums iOS app (with great PD help from Matt Davey).
>> It’s made with PureData, libPD and Objective-C.
>> I got asked a couple of times now, if there will be ever a standalone desktop version or even better Plugin (VST, AU) version of the app.
>> As far as I know, there are not ready to use workarounds to do so. Which is sad, because I can imagine a lot of fantastic plugins emerging from PD
>> Has somebody here some experience with doing such ports?
>> Then please contact me.
>> info at o-g-sus.de <mailto:info at o-g-sus.de>
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