Pd-list December 2001

pd-list@lists.iem.at

51 participants
89 discussions

midi questions
by CK 30 Dec '01

30 Dec '01

hi, firstly I'm wondering how one would go about using multiple midi interfaces with pd (my edirol usb interface has two ports + I occasoinally use virtual midi devices / pipes to control other apps or vice versa. on a second note I experience a much higher latency when using pd with external controllers than other software (could be distorted perception though) the patches are very simple i.e. midi -> osc -> adsr -> dac | | ------------- and the audiobuf settings don't change much of this behaviour. regards, x -- chris(a)lo-res.org Postmodernism is german romanticism with better http://pilot.fm/ special effects. (Jeff Keuss / via ctheory.com)

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buffer question
by Mirko Petrovich 29 Dec '01

29 Dec '01

Hi list, I need to know what would be the equivalence for setting buffer parameters between max/msp (in which the parameter is called I/O vector size), jmax (Im guessing the equivalent to "I/O vector" size is "AudioBuffer" size) and PD, in which there is a lot of parameters that have me confused. Im trying to do some latency comparisons, so I need an equivalent three-way-parameter. I guess audiobuffer=frags times blocksize but I'm not sure. Thank you very much. MP

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SDIF
by Andrew (Andy) W. Schmeder 28 Dec '01

28 Dec '01

Hi. Has anyone made externals to integrate the SDIF library with PD? andy

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adc~ failing?
by Joseph Zitt 28 Dec '01

28 Dec '01

I seem to be stepping into all the weird stuff here... For the past few hours, I can't seem to get any input via adc~, in places where it worked before and in test patches. The input works OK in the GNOME sound recorder (and I've also booted into Windoze and confirmed that it works there), but nothing seems to come in via adc~ objects in PD. Hooking it through snapshot~ into a VU meter and number box (adapting the test patch in 5.reference/snapshot~.pd ) I get no result from input, just the same low-level noise that I see when I'm not sounding. I may have missed something again... (The more I work with PD and like it, the more I wish there was a solid manual for it. If I could afford it, I'd immerse myself in the software and write one from the existing sources and what I learn...) -- |> ~The only thing that is not art is inattention~ --- Marcel Duchamp <| | jzitt(a)metatronpress.com http://www.metatronpress.com/jzitt | | Latest CDs: Collaborations/ All Souls http://www.mp3.com/josephzitt | | Comma: Voices of New Music Silence: the John Cage Discussion List |

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tables are dangerous (if renamed)
by Krzysztof Czaja 28 Dec '01

28 Dec '01

hi, an attached `crash-table.pd' is the `check-array.pd' from my previous post, but modified to encapsulate array in a table. It crashes Pd after a message (any message really) is sent to a renamed array through a table object. A check for null return from pd_findbyclass() in table_anything() in g_canvas.c would help... Krashtof #N canvas 207 232 521 362 12; #X msg 85 138 bang; #X obj 34 234 tabwrite~ mew; #X obj 287 234 table mew; #X msg 34 28 bang \; pd dsp 1 \; kitty rename grrr...; #X obj 287 181 r kitty; #X msg 289 28 \; kitty squeal; #X connect 0 0 1 0; #X connect 3 0 1 0; #X connect 4 0 2 0;

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Arrays of arrays?
by Joseph Zitt 27 Dec '01

27 Dec '01

Another newbie question... I'm trying to figure out how to make an array of arrays, or at least I think I am. What I'd like to do is to sample sounds from adc~ into a table or array (and I remain a bit confiused over whether they're the same thing, and the necessary relation of the visual array diagram to them), and them append each of them into an array of those, from which I can pick them out and play them as needed or randomly. Part of this seems to require creating templates, but from going through all the docs that I can find and playing around with them, I remain unclear on the whole template thing. I have a feeling that the documentation is assuming some paradigm that I haven't gotten yet. Any clues? -- |> ~The only thing that is not art is inattention~ --- Marcel Duchamp <| | jzitt(a)metatronpress.com http://www.metatronpress.com/jzitt | | Latest CDs: Collaborations/ All Souls http://www.mp3.com/josephzitt | | Comma: Voices of New Music Silence: the John Cage Discussion List |

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[devel] self-destruction
by Krzysztof Czaja 27 Dec '01

27 Dec '01

hi, like on so many occasions already, my original hasty response to ``dynamic etern/subpatch instantiation'' post was not precise. I must say, first of all, that in all cases reported below, it is hard to find any real bugs. These are `misfeatures', which do not break any promises -- and the safeguards could have been omitted for performance sake, or code simplicity, or whatever other reason... 1. I was right pointing at corrupted bindlist as a source of the original ``duplicated toplevel patch'' crash. The proof is here (toppatch.pd can be any patch file, [del 1000] is inserted in order to wait through any window raising delays): #N canvas 213 96 518 300 12; #X obj 25 41 loadbang; #X msg 25 91 bang \; pd open toppatch.pd . \; pd open toppatch.pd .; #X obj 25 176 del 1000; #X msg 25 231 \; pd-toppatch.pd menuclose; #X connect 0 0 1 0; #X connect 1 0 2 0; #X connect 2 0 3 0; static void bindlist_anything(t_bindlist *x, t_symbol *s, int argc, t_atom *argv) { t_bindelem *e = x->b_list; #if CRASHY /* the loop we have now */ for (e = x->b_list; e; e = e->e_next) pd_typedmess(e->e_who, s, argc, argv); #else /* safer loop */ while (e) { t_pd *who = e->e_who; e = e->e_next; pd_typedmess(who, s, argc, argv); } #endif } 2. I was wrong adding an example of a similar crash. The main theme in both cases was self-destruction, but my example was much more nasty. A direct cause of crashing in this case was such: #N canvas 296 127 450 300 12; #X obj 44 40 loadbang; #X obj 44 79 del 1000; #X msg 44 117 \; pd-crash find r \; x please do not crash; #N canvas 43 0 376 332 crash 1; #X obj 110 138 outlet; #X obj 110 68 r x; #X connect 1 0 0 0; #X restore 44 202 pd crash; #X msg 44 239 \; pd-crash cut; #X connect 0 0 1 0; #X connect 1 0 2 0; #X connect 3 0 4 0; void outlet_anything(t_outlet *x, t_symbol *s, int argc, t_atom *argv) { t_outconnect *oc = x->o_connections; char c; if (&c < stacklimit) outlet_stackerror(x); #if CRASHY /* the loop we have now */ else for (oc = x->o_connections; oc; oc = oc->oc_next) typedmess(oc->oc_to, s, argc, argv); #else /* safer loop */ else while (oc) { t_pd *dest = oc->oc_to; oc = oc->oc_next; typedmess(dest, s, argc, argv); } #endif } 3. Of course my original `test.pd' example would keep crashing, until the two safeguards are not applied to bang message, i.e. we need to embellish also bindlist_bang() and outlet_bang(). 4. In order to be really on the safe side, there always need to be a [del 1000] object inserted after any patch-modifying loadbang. Btw. under Gnome this delay may need to be even longer (I think there is a window raising bug in Gnome or Sawfish; in my Gnome system it is so annoying, that I finally deleted `after-raise' command from pdtk_canvas_new in pd.tk; no such trouble under fvwm2). 5. But even after adding all these safeguards, there would still be crashes, if the fatal message was clicked, instead of being loadbanged. For example, using safer version of outlet_bang(), the following (if named `crash-message.pd') will not crash upon loading, but will crash after clicking ``please do not crash'' message. #N canvas 296 127 424 295 12; #X obj 44 18 loadbang; #X obj 44 65 del 1000; #X msg 44 112 \; pd-crash-message.pd selectall \; x please do not crash; #X obj 44 195 r x; #X msg 44 243 \; pd-crash-message.pd cut; #X connect 0 0 1 0; #X connect 1 0 2 0; #X connect 3 0 4 0; The simplest safeguard would be just an insertion of ``if (!y) return;'' into message_click(). 6. Yet another source of crashing is sending `cut' message to any canvas which is not visible. Crashtof

1 1

gem (4lin) lib fails on load
by /dmotd: 27 Dec '01

27 Dec '01

hallo list.. i have run up against a problem getting gem4lin running on my linux box if anyone has any suggestions or ideas on how to get gem running this would be much appreciated................ i have configured + compiled gem 0.84-6 on my mandrake box (8.0 on kernel 2.4.3) without error (after inserting the include string.h to several files), however when i attempt to load the library, i receive this error message on start... -------------------- /home/dmotd/gem-0.84/Gem.pd_linux: /home/dmotd/gem-0.84/Gem.pd_linux: undefined symbol: _ZN8GLTTFont12setPrecisionEd /home/dmotd/gem-0.84/Gem: can't load library -------------------- this error leaves me to assume that there must be something wrong with the gltt library.. yet i have all the dependencies required and am using gltt 2.5-1 + the devel package as recommended by someone on the list previously.. any ideas? thanks //[patrick] ps.. i did attempt to compile gem 0.86.. but ran into some errors and haven't tried it again since..

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Does PD run on Windows XP ?
by dauphin 26 Dec '01

26 Dec '01

Hi, Has anybody tried to run PD on Windows XP ? Thanks, Michel

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problems getting ALSA to work under 2.4.16
by Ben Bogart - FMPM/F1999 23 Dec '01

23 Dec '01

Hello PD people, I tried sending this to the ALSA mailinglist but have gotten no reply. Does anyone have any pointers on why I can get ALSA by itself working? otherwise I guess i'll have to try OSS/free... Thanks a bunch. Hello all, I'm running ALSA 0.9.0B7 with a 2.4.16 kernel lib, util and driver all compile fine I then insert the snd-card-ens1371 module into my kernel for my SB PCI 128. When I try and run aplay I get this error: ALSA lib pcm_hw.c:580:(snd_pcm_hw_open) SNDRV_PCM_IOCTL_PVERSION failed: Inappropriate ioctl for device aplay: main:429: audio open error: Inappropriate ioctl for device I was sure to run the ./snddevices script. lsmod output: Module Size Used by Tainted: P snd-card-ens1371 9704 0 (unused) snd-rawmidi 11808 0 [snd-card-ens1371] snd-seq-device 3904 0 [snd-rawmidi] snd-pcm 45984 0 [snd-card-ens1371] snd-timer 9672 0 [snd-pcm] snd-ac97-codec 22992 0 [snd-card-ens1371] snd 21220 0 [snd-card-ens1371 snd-rawmidi snd-seq-device snd-pcm snd-timer snd-ac97-codec] gcc 2.95.3 make 3.79.1 2.4.16 kernel with base sound support. Any suggestions would be appriciated. anyone running ALSA without OSS emulation in 2.4.16? Thanks Ben B. Bogart ---------

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Pd-list December 2001