Pd-list June 2004

pd-list@lists.iem.at

128 participants
192 discussions

sharing pd-files
by Roman Haefeli 17 Jun '04

17 Jun '04

hi i'd like to build a small pd-music-community with a few friends. i am looking for a possibility to share patches that one of us made with the others, so that you can store online-abstractions. is anyone experienced in that kind of stuff? the best would be to set a -path [web-folder] in the .bat-file (or pd-command or whatever). thanks for inputs roman

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Re: [PD] please test: threaded soundfiler & garray locks
by Tim Blechmann 17 Jun '04

17 Jun '04

hi carmen, first of all, thanks for your response! > d_soundfile.c: In function `open_soundfile': > d_soundfile.c:247: warning: unused variable `param' > d_soundfile.c:206: warning: unused variable `format' this is the original code... > d_soundfile.c: In function `soundfiler_thread': > d_soundfile.c:1002: too many arguments to function > `sched_setscheduler' hm ... it seems that the windows pthread packages uses another definition of sched_setscheduler than linux ... i'll look into it tomorrow... i'm curious how this is handled on osx... > did i forget a -D er something? my output is: tim@laptop:~/pd/pd/src> make gcc -DPD -DUNIX -Wall -W -Wstrict-prototypes -Wno-unused -Wno-parentheses -Wno-switch -march=pentium4 -mmmx -msse -msse2 -mfpmath=sse -O6 -funroll-loops -fomit-frame-pointer -DDL_OPEN -DPA_USE_OSS -DPA_LITTLE_ENDIAN -DUSEAPI_OSS -I../portaudio/pa_common -I../portaudio/pablio -I../portaudio/portmidi-macosx -fno-strict-aliasing -DUSE_FFTW -DTHREADED_GUI -DTHREADED_SF -DGARRAY_THREAD_LOCK -D_GNU_SOURCE -DINSTALL_PREFIX=\"/usr/local\" -I. -c -o ../obj/d_soundfile.o d_soundfile.c i suppose you miss the -Wno-unused > when you say multithreaded, and i'll confess i haevnt read the source, > do you mean one secondary thread per object, so if it recieves 32 > messages in quick succesion, its going to do those sequentially, or is > it goign to launch 32 threads at once? based on the choking-death > scenario im thinking it is the latter? you would know more than me > here...i suppose a single detached thread that waits for one file to > finish before stating another would be the ideal compromise... i'm using one helper thread that's working on a queue of processes. these processes will be run sequencial. the queue is not only able to perform soundfiler operations but all operations that match the api can be scheduled there. for the soundfiler routines (read, write, resize) a new buffer will be allocated, prepared and after locking the system with sys_lock() the pointers will be set to the new array. cheers... -- Tim mailto:TimBlechmann@gmx.de ICQ: 96771783 -- The only people for me are the mad ones, the ones who are mad to live, mad to talk, mad to be saved, desirous of everything at the same time, the ones who never yawn or say a commonplace thing, but burn, burn, burn, like fabulous yellow roman candles exploding like spiders across the stars and in the middle you see the blue centerlight pop and everybody goes "Awww!" Jack Kerouac

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readsf problem
by jim ruxton 16 Jun '04

16 Jun '04

I'm trying to play some .wav files that I downloaded and for some reason I can't get them to play using readsf or sfplay from Zexy. I have some files that I previously created myself and they work fine but the ones I download aren't working. I just get noise. Any thoughts as to what I may be doing wrong? Thanks, Jim

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processing webcam input with GEM
by Vasily Kuznetsov 16 Jun '04

16 Jun '04

Hi list, My friend is doing a project where he will need to process the image from a webcam in realtime, to detect changes in the color of certain areas within it's view. I thought PD/GEM might be a good tool for this. Has anyone had any experience, working with webcams from PD? Which webcams are the easiest to connect to PD? What other externals/packages will I need? Thank you in advance, Best regards, Vasily mailto: kvas at naumen dot ru Now paused: Andrey Kiritchenko - Polnoch P.S. BTW, the OS used will most likely be WinXP

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Re: [PD] gem & openGL
by chris clepper 16 Jun '04

16 Jun '04

On Jun 16, 2004, at 4:51 AM, andreas.poegl wrote: > thanx for answering.. > my problem is that i want to create chladni-figures resulting from an > analysis within pd > the chladni code uses forms like 'for' and i don't know how to > implement in gem. > ist there are kind of GEMfor ? > here is thwe oGL code Since you already have the C code then it only makes sense to write an external. this will be far faster to write and also run a whole lot better as well. Implementing the following using wrapper objects is going to be nothing but frustration. I have no idea how you would do Paul Bourke's Eval and CalcNormals in a sane manner either. There is a good chance the next release of GEM might have an object or two based on a few of Bourke's ideas. cgc > du = TWOPI / (double)resolution; /* Theta */ > dv = PI / (double)resolution; /* Phi */ > > > glBegin(GL_QUADS); > for (i=0;i<resolution;i++) { > u = i * du; > for (j=0;j<resolution;j++) { > v = j * dv; > q[0] = Eval(u,v); > n[0] = CalcNormal(q[0], > Eval(u+du/10,v), > Eval(u,v+dv/10)); > c[0] = GetColour(u,0.0,TWOPI,colourmap); > glNormal3f(n[0].x,n[0].y,n[0].z); > glColor3f(c[0].r,c[0].g,c[0].b); > glVertex3f(q[0].x,q[0].y,q[0].z); > > > q[1] = Eval(u+du,v); > n[1] = CalcNormal(q[1], > Eval(u+du+du/10,v), > Eval(u+du,v+dv/10)); > c[1] = GetColour(u+du,0.0,TWOPI,colourmap); > glNormal3f(n[1].x,n[1].y,n[1].z); > glColor3f(c[1].r,c[1].g,c[1].b); > glVertex3f(q[1].x,q[1].y,q[1].z); > > > q[2] = Eval(u+du,v+dv); > n[2] = CalcNormal(q[2], > Eval(u+du+du/10,v+dv), > Eval(u+du,v+dv+dv/10)); > c[2] = GetColour(u+du,0.0,TWOPI,colourmap); > glNormal3f(n[2].x,n[2].y,n[2].z); > glColor3f(c[2].r,c[2].g,c[2].b); > glVertex3f(q[2].x,q[2].y,q[2].z); > > > q[3] = Eval(u,v+dv); > n[3] = CalcNormal(q[3], > Eval(u+du/10,v+dv), > Eval(u,v+dv+dv/10)); > c[3] = GetColour(u,0.0,TWOPI,colourmap); > glNormal3f(n[3].x,n[3].y,n[3].z); > glColor3f(c[3].r,c[3].g,c[3].b); > glVertex3f(q[3].x,q[3].y,q[3].z); > } > } > glEnd(); > > > regards andreas

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readsf~ harddisc access
by Johannes Burström 16 Jun '04

16 Jun '04

Hi list I have some questions about readsf~. Recently i have had some trouble with my audio getting all cracked up, forcing me to restart pd to get everything to work again. I've always blamed winxp and my audiophile usb soundcard for everything, but today I experienced it again, with a very simple patch - just a rather large soundfile played back by readsf~ fed into a munger~. After a sound breakdown with pd cpu usage spiking up to 97%+ i decided to defragment my drive, after which everything went as it should, and still is. so i have a few questions: Does this (harddisc access problems = total audio breakdown) make any sense, or is it just a coincidence? after playing some live gigs with pd, i'm starting to believe in fairies and ghosts. Could i set the buffer size argument in readsf~ in any way to prevent this from happening, even from a not-so-tidy hard drive? The help file for readsf~ tells me to wait "a few seconds" after opening a file to start the playback. Is this time related to the buffer size? Thanks for helping out. Johannes

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Re: Use 'make' to compile externals?......
by chun lee 16 Jun '04

16 Jun '04

Hi there: Thanks for your reply, its a bit clearer to me now. I have not used CVS before, so perhaps it time for me to do so. Any tips? Cheers CHUN >Hallo, >chun lee hat gesagt: // chun lee wrote: > >> I am pretty new to Linux, which is the platform I like to write external in. >> do I just use the 'make' command to compile the object? > >Often yes, but for that you need to have a file called Makefile or >makefile. Makefils are make what to do. There are many docs and >introduction to makefiles on the web or maybe already on your >harddisk, try "info make". But normally you would just use some other >Makefile and edit it. A good Makefile to start with is in the CVS in >externals/build/linux/makefile You can probably use it without any >changes. > >Ciao >-- > Frank Barknecht

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pasic equalizer problem
by nexyufuli evo 15 Jun '04

15 Jun '04

hi list . .i try to build a equalizer . . .but i got some problem.in neutral position the output isent linear with a multipliation be -1 in one band it is better but not perfect . .but i dont understand the reasen . . could please giving me a hand . .? thanx nos #N canvas 284 276 582 514 10; #N canvas 0 0 492 550 equalizer 1; #X obj 24 6 inlet~; #X obj 67 238 inlet; #X obj 197 208 lop~; #X obj 183 164 hip~; #X obj 353 164 hip~; #X obj 27 264 *~ 1; #X obj 198 266 *~ 1; #X obj 353 264 *~ 1; #X obj 65 402 outlet~; #X obj 239 236 inlet; #X obj 389 234 inlet; #X obj 197 228 lop~; #X obj 183 184 hip~; #X obj 353 184 hip~; #X obj 27 214 lop~; #X obj 27 234 lop~; #X obj 421 82 loadbang; #X msg 183 99 250; #X msg 269 99 1500; #X obj 183 184 hip~; #X obj 248 318 +~; #X obj 65 356 +~; #X obj 155 119 f; #X obj 303 119 f; #X obj 24 34 s~ \$0-input; #X obj 28 132 r~ \$0-input; #X obj 184 132 r~ \$0-input; #X obj 353 132 r~ \$0-input; #X obj 252 286 *~ -1; #X connect 0 0 24 0; #X connect 1 0 5 1; #X connect 2 0 11 0; #X connect 3 0 12 0; #X connect 3 0 19 0; #X connect 4 0 13 0; #X connect 5 0 21 0; #X connect 6 0 20 0; #X connect 7 0 20 1; #X connect 9 0 6 1; #X connect 10 0 7 1; #X connect 11 0 6 0; #X connect 13 0 7 0; #X connect 14 0 15 0; #X connect 15 0 5 0; #X connect 16 0 18 0; #X connect 16 0 17 0; #X connect 17 0 22 0; #X connect 18 0 23 0; #X connect 19 0 2 0; #X connect 20 0 21 1; #X connect 21 0 8 0; #X connect 22 0 14 1; #X connect 22 0 15 1; #X connect 22 0 3 1; #X connect 22 0 12 1; #X connect 23 0 2 1; #X connect 23 0 11 1; #X connect 23 0 4 1; #X connect 23 0 13 1; #X connect 25 0 14 0; #X connect 26 0 3 0; #X connect 27 0 4 0; #X restore 178 164 pd equalizer; #X obj 223 71 vsl 20 60 0 4 0 0 empty empty empty 0 -8 0 8 -262144 -1 -1 1475 1; #X obj 259 70 vsl 20 60 0 4 0 0 empty empty empty 0 -8 0 8 -262144 -1 -1 1475 1; #X obj 296 71 vsl 20 60 0 4 0 0 empty empty empty 0 -8 0 8 -262144 -1 -1 1475 1; #X obj 84 58 noise~; #N canvas 0 0 460 310 rfft 0; #X obj 326 58 inlet~; #X obj 326 112 rfft~; #X obj 326 145 *~; #X obj 357 145 *~; #X obj 326 175 sqrt~; #X obj 404 213 metro 200; #X obj 1 213 tabwrite~ \$0_spectrum; #N canvas 0 0 452 302 graph1 0; #X array \$0_spectrum 128 float 0; #X coords 0 200 128 0 128 100 1; #X restore 168 9 graph; #X obj 43 108 tgl 15 0 empty empty empty 0 -6 0 8 -24198 -262144 -1 1 1; #X floatatom 43 180 5 0 0 0 - - -; #X obj 325 88 *~ 1; #X obj 88 141 loadbang; #X obj 325 35 block~ 1024 1; #X msg 43 158 4; #X msg 40 69 1; #X obj 33 30 loadbang; #X connect 0 0 10 0; #X connect 1 0 2 0; #X connect 1 0 2 1; #X connect 1 1 3 0; #X connect 1 1 3 1; #X connect 2 0 4 0; #X connect 3 0 4 0; #X connect 4 0 6 0; #X connect 5 0 6 0; #X connect 8 0 5 0; #X connect 9 0 10 1; #X connect 10 0 1 0; #X connect 11 0 13 0; #X connect 13 0 9 0; #X connect 14 0 8 0; #X connect 15 0 14 0; #X coords 0 0 1 1 200 140 1; #X restore 178 260 pd rfft; #X msg 363 51 1; #X obj 106 112 *~; #X obj 142 112 *~; #X obj 16 160 tgl 15 0 empty empty empty 0 -6 0 8 -258699 -262144 -1 0 1; #X obj 42 278 expr 1 - $f1; #X text 25 173 on = equalizer; #X obj 396 22 loadbang; #X obj 16 16 loadbang; #X msg 13 45 1; #X obj 400 123 osc~; #X floatatom 424 93 5 0 0 0 - - -; #X obj 398 196 *~ 0.7; #X connect 0 0 5 0; #X connect 1 0 0 1; #X connect 2 0 0 2; #X connect 3 0 0 3; #X connect 4 0 7 0; #X connect 4 0 8 0; #X connect 6 0 3 0; #X connect 6 0 2 0; #X connect 6 0 1 0; #X connect 7 0 5 0; #X connect 8 0 0 0; #X connect 9 0 10 0; #X connect 9 0 8 1; #X connect 10 0 7 1; #X connect 12 0 6 0; #X connect 13 0 14 0; #X connect 14 0 9 0; #X connect 15 0 17 0; #X connect 16 0 15 0;

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basic pd-jack question
by Ciccolella Lazzaro Nicolò 15 Jun '04

15 Jun '04

I start pd (pd-0.37-1) with this line: -jack -rt -noadc -channels 6 -mididev 1,2,3,4 pd automatically connects all its audio outputs to the imputs of alsa_pcm (as i see in qjackctl). There is a way in order to avoid that this happens ? I would want to be able to decide I to which imput to connect the audio outputs of pd. many thanks -- Lazzaro

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Gem in Mandrake 9.1
by andreithomaz 15 Jun '04

15 Jun '04

hello list, i would like very much to work with Gem and Pure Data, but I got to make them work only in WindowsXP. Does anybody work with them in Mandrake 9.1.? I cann't compile all that I need to do.... thanks, andrei -- RGB Design Digital www.rgbdesigndigital.com.br

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Pd-list June 2004