[PD-dev] Can somebody help to create a desktop / VST / AU version of a PD / libPD / app ?

Dan Wilcox danomatika at gmail.com
Thu Apr 23 06:01:49 CEST 2015 

Actually yeah, looks good. Is there anyway this particular patch can be backported to the 0.46-6 release? Or will there be a 0.46-7 coming up soon? I ask because I’m having libpd checkout pure-data release tags. Not a huge deal if not, since this is still in testing.

Just to confirm:

Current git log for the pure-data sources I’m using:

> danomatika:pure-data dano$ git log
> commit 35151c473827260c86cc864cc4cd058b24e67139
> Author: Miller Puckette <msp at ucsd.edu>
> Date:   Wed Apr 22 14:06:36 2015 -0700
> 
>     make list of signals local to a pd instance to fix libpd crasher


Performed:

cd libpd
make clobber
make
cd samples/c/pdtest_multi
make clobber
make
./pdtest_multi test.pd ./

Got:

> start 80c04a90
> stop 80c04a90
> continue start 80c04a90
> stop 80c04a90
> print: 0
> 1003-frequency: bang
> start 80c04a90
> stop 80c04a90
> continue start 80c04a90
> start 80c04db0
> stop 80c04db0
> continue start 80c04db0
> stop 80c04db0
> print: 0
> 1004-frequency: bang
> start 80c04db0
> stop 80c04db0
> continue start 80c04db0
> 1003-frequency: 1
> 1004-frequency: 2
> 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 
> print: 1
> 0.999944 0.999944 0.999943 0.999943 0.999942 0.999942 0.999941 0.999941 
> print: 1
> 0.999815 0.999815 0.999810 0.999810 0.999804 0.999804 0.999799 0.999799 
> print: 2
> print: 2

I got the same response with building libpd with & without -03.

--------
Dan Wilcox
@danomatika
danomatika.com <http://danomatika.com/>
robotcowboy.com <http://robotcowboy.com/>
> On Apr 22, 2015, at 8:27 PM, Miller Puckette <msp at ucsd.edu> wrote:
> 
> Hmm... and (just checking) - you did a make clean and rebuilt everything?
> The pd_instance structure changed....
> 
> I can't get it to fail over here any more...
> 
> cheers
> Miller
> 
> On Wed, Apr 22, 2015 at 05:30:20PM -0400, Dan Wilcox wrote:
>> Thanks. Unfortunately still a crash, but now at a different place. I also confirmed that it still runs fine when libpd is compiled with -O3 aka make DEBUG=true.
>> 
>> #0  signal_cleanup [inlined] () at /Users/dano/src/pd/libpd/pure-data/src/d_ugen.c:364
>> #1  0x0000000100026680 in ugen_stop () at d_ugen.c:562
>> #2  0x000000010002670e in ugen_start () at d_ugen.c:569
>> #3  0x000000010003197e in glob_dsp (dummy=0x100102e00, s=0x0, argc=<value temporarily unavailable, due to optimizations>, argv=0x100102e20) at g_canvas.c:1086
>> #4  0x000000010006d286 in pd_typedmess (x=0x1000a5760, s=0x0, argc=1055232, argv=0x100102e20) at m_class.c:699
>> #5  0x0000000100096fb8 in libpd_message [inlined] () at /Users/dano/src/pd/libpd/libpd_wrapper/z_libpd.c:236
>> #6  0x0000000100096fb8 in libpd_finish_message (recv=<value temporarily unavailable, due to optimizations>, msg=0x100000f67 "dsp") at z_libpd.c:562
>> #7  0x0000000100000b8f in main ()
>> 
>> In detail:
>> 
>> #0  signal_cleanup [inlined] () at /Users/dano/src/pd/libpd/pure-data/src/d_ugen.c:364
>> 364	        pd_this->pd_signals = sig->s_nextused;
>> (gdb) frame 1
>> #1  0x0000000100026680 in ugen_stop () at d_ugen.c:562
>> 364	        pd_this->pd_signals = sig->s_nextused;
>> (gdb) frame 2
>> #2  0x000000010002670e in ugen_start () at d_ugen.c:569
>> 569	    ugen_stop();
>> (gdb) frame 3
>> #3  0x000000010003197e in glob_dsp (dummy=0x100102e00, s=0x0, argc=<value temporarily unavailable, due to optimizations>, argv=0x100102e20) at g_canvas.c:1086
>> 1086	    ugen_start();
>> (gdb) frame 4
>> #4  0x000000010006d286 in pd_typedmess (x=0x1000a5760, s=0x0, argc=1055232, argv=0x100102e20) at m_class.c:699
>> 699	            else (*((t_messgimme)(m->me_fun)))(x, s, argc, argv);
>> (gdb) frame 5
>> #5  0x0000000100096fb8 in libpd_message [inlined] () at /Users/dano/src/pd/libpd/libpd_wrapper/z_libpd.c:236
>> 236	  pd_typedmess(dest, gensym(msg), n, v);
>> (gdb) frame 6
>> #6  0x0000000100096fb8 in libpd_finish_message (recv=<value temporarily unavailable, due to optimizations>, msg=0x100000f67 "dsp") at z_libpd.c:562
>> 236	  pd_typedmess(dest, gensym(msg), n, v);
>> (gdb) frame 7
>> #7  0x0000000100000b8f in main ()
>> 
>> --------
>> Dan Wilcox
>> @danomatika
>> danomatika.com <http://danomatika.com/> <http://danomatika.com/ <http://danomatika.com/>>
>> robotcowboy.com <http://robotcowboy.com/> <http://robotcowboy.com/ <http://robotcowboy.com/>>
>>> On Apr 22, 2015, at 5:12 PM, Miller Puckette <msp at ucsd.edu> wrote:
>>> 
>>> OK ... I think I fixed it... pull newest from git and try.
>>> 
>>> thanks
>>> M
>>> 
>>> On Wed, Apr 22, 2015 at 12:35:10PM -0700, Miller Puckette wrote:
>>>> Aha - sometimes things crash on OSX because of "minor" buffer overruns that
>>>> linux just soldiers past.  I'll break out a mac and try again...
>>>> 
>>>> M
>>>> 
>>>> On Wed, Apr 22, 2015 at 03:03:09AM -0400, Dan Wilcox wrote:
>>>>> Weird. It crashes for me on OSX when libpd is built with -O3 and the program is built with or without -O3.
>>>>> 
>>>>> *Note: I just finished reorganizing the libpd samples by language name. If you do a pull, the multi instance test is now located in samples/c/pdtest_multi 
>>>>> 
>>>>> Rebuilding and running it again yields:
>>>>> 
>>>>> Program received signal EXC_BAD_ACCESS, Could not access memory.
>>>>> Reason: 13 at address: 0x0000000000000000
>>>>> outlet_float (x=0x3f7ffc2a3f7ffc38, f=0) at m_obj.c:388
>>>>> 388	    for (oc = x->o_connections; oc; oc = oc->oc_next)
>>>>> 
>>>>> #0  outlet_float (x=0x3f7ffc2a3f7ffc38, f=0) at m_obj.c:388
>>>>> #1  0x000000010006f0b9 in outlet_bang (x=<value temporarily unavailable, due to optimizations>) at m_obj.c:363
>>>>> #2  0x00000001000953f9 in metro_tick (x=0x10021ad90) at x_time.c:162
>>>>> #3  0x0000000100071010 in sched_tick () at m_sched.c:418
>>>>> #4  0x0000000100096733 in libpd_process_float (ticks=1, inBuffer=<value temporarily unavailable, due to optimizations>, outBuffer=<value temporarily unavailable, due to optimizations>) at z_libpd.c:185
>>>>> #5  0x0000000100000d67 in main ()
>>>>> 
>>>>> some frame detail:
>>>>> 
>>>>> (gdb) frame 0
>>>>> #0  outlet_float (x=0x3f7ffc2a3f7ffc38, f=0) at m_obj.c:388
>>>>> 388	    for (oc = x->o_connections; oc; oc = oc->oc_next)
>>>>> (gdb) frame 1
>>>>> #1  0x000000010006f0b9 in outlet_bang (x=<value temporarily unavailable, due to optimizations>) at m_obj.c:363
>>>>> 363	        pd_bang(oc->oc_to);
>>>>> (gdb) frame 2
>>>>> #2  0x00000001000953f9 in metro_tick (x=0x10021ad90) at x_time.c:162
>>>>> 162	    outlet_bang(x->x_obj.ob_outlet);
>>>>> (gdb) frame 3
>>>>> #3  0x0000000100071010 in sched_tick () at m_sched.c:418
>>>>> 418	        (*c->c_fn)(c->c_owner);
>>>>> (gdb) frame 4
>>>>> #4  0x0000000100096733 in libpd_process_float (ticks=1, inBuffer=<value temporarily unavailable, due to optimizations>, outBuffer=<value temporarily unavailable, due to optimizations>) at z_libpd.c:185
>>>>> 185	  PROCESS(,)
>>>>> (gdb) frame 5
>>>>> #5  0x0000000100000d67 in main ()
>>>>> 
>>>>> --------
>>>>> Dan Wilcox
>>>>> @danomatika
>>>>> danomatika.com <http://danomatika.com/>
>>>>> robotcowboy.com <http://robotcowboy.com/>
>>>>>> On Apr 22, 2015, at 12:15 AM, Miller Puckette <msp at ucsd.edu> wrote:
>>>>>> 
>>>>>> I think it was optimized since I had already made libpd, not from the
>>>>>> sampes/.../multi directory.  But anyhow I re-did it as you suggest with
>>>>>> the same result....  can't make it fail...
>>>>>> 
>>>>>> cheers
>>>>>> M
>>>>>> 
>>>>>> On Wed, Apr 22, 2015 at 12:03:28AM -0400, Dan Wilcox wrote:
>>>>>>> You ran it without the optimizations since I added the debug option. Remove DEBUG=true from line 33 in the Makefile: https://github.com/libpd/libpd/blob/master/samples/c_samples/multi/Makefile#L33 <https://github.com/libpd/libpd/blob/master/samples/c_samples/multi/Makefile#L33> and do a full clean before rebuilding:
>>>>>>> 
>>>>>>> cd ../../../ && make clobber && cd - && make
>>>>>>> --------
>>>>>>> Dan Wilcox
>>>>>>> @danomatika
>>>>>>> danomatika.com <http://danomatika.com/>
>>>>>>> robotcowboy.com <http://robotcowboy.com/>
>>>>>>>> On Apr 21, 2015, at 11:57 PM, Miller Puckette <msp at ucsd.edu> wrote:
>>>>>>>> 
>>>>>>>> Hi Dan et al -
>>>>>>>> 
>>>>>>>> I gave this a try:
>>>>>>>> 
>>>>>>>> git clone https://github.com/libpd/libpd.git
>>>>>>>> 
>>>>>>>> [copies pd sources into libpd/pure-data]
>>>>>>>> 
>>>>>>>> cd libpd
>>>>>>>> make
>>>>>>>> 
>>>>>>>> cd samples/c_samples/multi/
>>>>>>>> make
>>>>>>>> ./multi_pdtest multi_test.pd `pwd`
>>>>>>>> 
>>>>>>>> and got output:
>>>>>>>> 
>>>>>>>> print: 0
>>>>>>>> 1003-frequency: bang
>>>>>>>> print: 0
>>>>>>>> 1004-frequency: bang
>>>>>>>> 1003-frequency: 1
>>>>>>>> 1004-frequency: 2
>>>>>>>> 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 
>>>>>>>> print: 1
>>>>>>>> 0.999944 0.999944 0.999943 0.999943 0.999942 0.999942 0.999941 0.999941 
>>>>>>>> print: 1
>>>>>>>> 0.999815 0.999815 0.999810 0.999810 0.999804 0.999804 0.999799 0.999799 
>>>>>>>> print: 2
>>>>>>>> print: 2
>>>>>>>> 
>>>>>>>> This on Fedora 21, 64 bits, Intel hardware.  
>>>>>>>> 
>>>>>>>> I guess something subtle is happening, maybe in Pd and unrelated to libpd?
>>>>>>>> 
>>>>>>>> cheers
>>>>>>>> Miller
>>>>>>>> 
>>>>>>>> On Tue, Apr 21, 2015 at 06:00:15PM -0400, Dan Wilcox wrote:
>>>>>>>>> Howdy Miller,
>>>>>>>>> 
>>>>>>>>> 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:
>>>>>>>>>> 
>>>>>>>>>> 55d54
>>>>>>>>>> <   sys_time = 0;
>>>>>>>>>> 110c109
>>>>>>>>>> <   sched_tick(sys_time + sys_time_per_dsp_tick);
>>>>>>>>>> ---
>>>>>>>>>>> 
>>>>>>>>>> sched_tick();
>>>>>>>>>> 
>>>>>>>>>> 130c129
>>>>>>>>>> <     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:
>>>>>>>>> 
>>>>>>>>> print: 0
>>>>>>>>> 1003-frequency: bang
>>>>>>>>> print: 0
>>>>>>>>> 1004-frequency: bang
>>>>>>>>> 1003-frequency: 1
>>>>>>>>> 1004-frequency: 2
>>>>>>>>> 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 
>>>>>>>>> print: 1
>>>>>>>>> 0.999944 0.999944 0.999943 0.999943 0.999942 0.999942 0.999941 0.999941 
>>>>>>>>> print: 1
>>>>>>>>> 0.999815 0.999815 0.999810 0.999810 0.999804 0.999804 0.999799 0.999799 
>>>>>>>>> print: 2
>>>>>>>>> print: 2
>>>>>>>>> 
>>>>>>>>> --------
>>>>>>>>> Dan Wilcox
>>>>>>>>> @danomatika
>>>>>>>>> danomatika.com <http://danomatika.com/>
>>>>>>>>> robotcowboy.com <http://robotcowboy.com/>
>>>>>>>>>> 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
>>>>>>>>>> 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>
>>>>>>>>>>> 
>>>>>>>>>>> 
>>>>>>>>>>> Hi,
>>>>>>>>>>> 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.
>>>>>>>>>>> 
>>>>>>>>>>> Cheers,
>>>>>>>>>>> Oliver
>>>>>>>>>>> 
>>>>>>>>>>> info at o-g-sus.de <mailto:info at o-g-sus.de>
>>>>>>>>>> 
>>>>>>>>>> _______________________________________________
>>>>>>>>>> Pd-dev mailing list
>>>>>>>>>> Pd-dev at lists.iem.at <mailto:Pd-dev at lists.iem.at>
>>>>>>>>>> http://lists.puredata.info/listinfo/pd-dev <http://lists.puredata.info/listinfo/pd-dev>
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>> 
>>>>>>>> 
>>>>>>>>> _______________________________________________
>>>>>>>>> Pd-dev mailing list
>>>>>>>>> Pd-dev at lists.iem.at
>>>>>>>>> http://lists.puredata.info/listinfo/pd-dev
>>>>>>>> 
>>>>>>> 
>>>>> 
>>>> 
>>>> _______________________________________________
>>>> Pd-dev mailing list
>>>> Pd-dev at lists.iem.at
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