Pd-list June 2004

pd-list@lists.iem.at

128 participants
192 discussions

String editing
by Thomas Sivertsen 02 Jul '04

02 Jul '04

Hello list, I was wondering if there is a possibility in PD to parse a message like "symbol /home/thomas/qt/regnbueromskip.mov" and then remove the "symbol" within that string? It's a simple string. I need to prepend a read message to the specific file to read it into pdp_qt from Yves Degoyons playlist object. For some reason it doesn't send a message, but a message with a symbol identifier in front. prepending it doesn't work. Something like: [symbol /home/thomas/qt/regnbueromskip.mov] <-- messagebox | [remove the symbol and space] <-- ???? object | [prepend read /home/thomas/qt/regnbueromskip.mov] <-- prepend object Any examples? Thanks in advance! .thomas

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Re: [PD] processing webcam input with GEM
by Max Neupert 02 Jul '04

02 Jul '04

the computers specs are: winXP SP1 Intel 2.28GHz 1GB RAM NVIDIA graphics card. does that help? Am 16.06.2004 um 22:13 schrieb Ian Smith-Heisters: > Huh, that's exactly the camera I was using, only without any problems > :\ Maybe some conflict with your video card? I literally plugged the > camera in and it worked in PD. Weird indeed. What are your comp's > specs? > > Ian > > Max Neupert wrote: > >> That's interesting; i recently had a project (yesterday) where i >> tried to use pd, GEM and a Logitech Quickcam (Pro 4000) on a WinXP >> and pd crashed when i loaded a pd patch using GEM objects. after >> uninstalling the Logitech software pd ran nicely again - but i could >> not use the cam. >> weired. >> >> max >> >> Am 16.06.2004 um 18:19 schrieb Ian Smith-Heisters: >> >>> I recently did a project in WinXP with a webcam, PD, and GEM and it >>> worked beutifully. I was able to have 9 concurrently running >>> captures and 3D without a decent framerate. I think there are some >>> GEM picture analysis objects, but I'm not familiar with them. >>> PDP+PiDiP on Linux is the best way to do this, but WinXP and GEM, >>> perhaps with an OSC connection to something like Eyesweb will work. >>> I used a Logitech Quickcam. >>> >>> -Ian >>> >>> metafor(a)gmx.net wrote: >>> >>>> hi vasily >>>> >>>> i did this kind of things (colordetection) with pd and pdp+pidip. >>>> it works >>>> like a charm and it's fast, even if you use an object multiple >>>> times, in my case >>>> 17. it's linux and macOSX only. but i think you should give >>>> dynebolic (dynebolic.org) a try, >>>> it's a linux live-cd and i think the mentioned software should run >>>> without >>>> installing anything. >>>> http://ydegoyon.free.fr/pidip.html >>>> >>>> if there is no 3D involved i think you rather take this then using >>>> gem. >>>> most people i know working with linux and webcams are using the >>>> ones from philips. >>>> i think 740 (yellow rubber focus, not red) but i tried logitech and >>>> it worked as well, >>>> have a look on the supported models list of the pwc-driver: >>>> http://www.smcc.demon.nl/webcam/ >>>> >>>> if you need to stay on win i don't have much idea what to use, >>>> probably eyesweb >>>> could do this kind of things. (OSC communication with pd) >>>> >>>> M >>>> >>>> >>>> Vasily Kuznetsov wrote: >>>> >>>>> 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] problem with GEM 0.90 on win2k
by rainer _ 01 Jul '04

01 Jul '04

>>what does incredibly slow mean to you: not even heavy videoprocessing, just playing back a uncompressed avi 720x576. it's 10 or maybe 20% of the speed with gem0.90 compared with gem0.87+CVS on the same comp. i've tried diffrent patches videoprocessing & openGL processing - all over the same: incredibly slow. no other processes in background, excluding my personal firewall and windows system stuff. maybe it has something to do with the glut libs?? no idea cheers rainer _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus

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gate
by raymond 01 Jul '04

01 Jul '04

Hi is there an object in pd that works like gate on max. the problem i have with spigot is that i can't route the data through diferent outlets. is there any gate like object? thanks raymond

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questions about plugins (audiounits, vst, ladspa) on mac
by d. daniell 30 Jun '04

30 Jun '04

Questions regarding using PD as a plugin host on a Mac: * what's the current status of PD's VST plugin support under PD for OSX? I have only been able to find the Windows vst~ externs and k_vst~ for Linux. * has anyone done any work on an AudioUnit hosting extern for PD, to support AudioUnit plugins? * is it at all possible to get LADSPA running on OS X? Thanks. Just trying to see what the options are... - dwd

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problem with GEM 0.90 on win2k
by beau 30 Jun '04

30 Jun '04

Hi jepoxy I am using a very similar system, athlon 1.5 + nvideo dx9 win2k. I noticed a slow down too, but turning the antivirus software and all other programs solved it. One other problem is that if you stop rendering and there is any change in the gem window inbetween renders then pd crashes. hi list, i have a problem with GEM 0.90 on win2000. gem is loading fine on startup, no error messages in the console window. the only drawback: everything is running incredibly slowly (compared with gem0.87+cvs, on the same computer) specs: amd athlon 1.4 GHz, Geforce2 GTS pro + fresh nvidia drivers directx 9.0b, all HW acceleration enabled pd version 0.37-1 on an other machine (p4 2.4GHz, Geforce4, win2k) everything's ok. http://geocities.com/recursionvideolab/

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Re: [PD] mjpeg playback in pdp_qt
by olsen 30 Jun '04

30 Jun '04

Thomas Sivertsen wrote: > olsen wrote: > >> buenas >> I've some problems with the mjpeg-playback in pdp. playing the file >> with lqtplay - fine. >> opening it in pdp_qt get the errror: >> dlopen failed for /usr/lib/libquicktime/lqt_mjpeg.so: >> libquicktime_mjpeg.so.0: cannot open shared object file: No such file >> or directory >> pdp_qt: video stream found (600x480 pixels, 30 fps, 663 frames, jpeg >> codec) >> pdp_qt: audio stream found (2 channels, 44100 Hz, 975492 samples, >> chunksize 1471) >> pdp_qt: WARNING: unsupported video codec >> pdp_qt: ERROR: no usable video stream found. >> quicktime_delete_vcodec_stub called > > soluti thomas > > I get the same error, and have not found a solution yet. Any help > would be appreciated! It's not only the mjpeg codec, it's all > Quicktime codecs. I tried symliunking them in different places, but > not working. > you have a lqt_mjpeg.so in /usr/lib/ ? check your installed quicktime .deb libs (dpkg -l |grep libquick) remove them and then recompile pdp with /only/ the libquicktime source compiled by 'hand'? for the dependencies you've to chop the dependency tree... best olsen btw to prevent overloading your troubles use libquicktime-0.9.1 like yves recommended and check after configure your output (...checking for libjpeg... yes checking for libavcodec... yes checking for libpng... yes ....) if you're on the way. i would recommend to install libquicktime from the sources : http://prdownloads.sourceforge.net/libquicktime/libquicktime-0.9.1.tar.gz ( ./configure; make; make install ) then to add the line : /usr/local/lib in /etc/ld.so.conf and finally to run 'ldconfig -v' so that it could find the new library. cheers, sevy > It seems to be wanting to find the libraries in the wrong places, even > though I copmpiled from the sources and installed per README. I had no > problems on a previous system, but this one (knoppix 3.4), is giving > me loads of trouble. could be my distribution, or it could be some > changes from 0.12-xx to the current version (sorry, can't check > exactly which one it is atm). > > BTW, I'm new to the list. Hi all! > > .thomas > >

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RE: [PD] PD for Audio Manipulation/Mangling
by John Potter 30 Jun '04

30 Jun '04

Awesome - thanks for the insight. I've been a general business software developer (Visual Basic & Web Stuff primarily) for the past 10 years and thinking I don't want to spend the next 10 years doing the same. I have a pretty good understanding of synthesis and sound manipulation (effects) and a broad overview of the ins and outs of DSP (IIR, FIR, FFT, Windowing, etc). If there's one thing I'm above average at - it's starting from a blank slate, reading, playing, knocking my head against the wall but eventually becoming fluent and at least mildly dangerous. DSP is an area that interests me and I thought PD & Max would be a great place to start as you have a something to start with and then can move on in terms of writing externals and ultimately write something from scratch if I decide to. Anyone know if Audiomulch allows you to write your own "externals" - other than going the VST route. Any of these - PD, Max/MSP, Audiomulch support something like rewire? The audio processing question is because I have an immediate need that I'd like to fulfill but it's really where my interest lies. Thanks again for the thoughtful answers! John -----Original Message----- From: derek holzer [mailto:derek@x-i.net] Sent: Wednesday, June 23, 2004 10:48 AM To: John Potter Cc: Jamie Bullock; pd-list(a)iem.at Subject: Re: [PD] PD for Audio Manipulation/Mangling John Potter wrote: > Should I want to check out PD or MSP for the learning experience does > one work better than the other for this sort of application? My own evolution was from Audiomulch to Reaktor to Pure Data. I saw it as a process of "growing out" of each software's limitations and on to the next. I use PD largely for realtime manipulation of incoming audio and samples, and I can say that it is very well suited for the purpose, provided you are willing to do some work and even learn a few new things to get there. In terms of audio processing, MSP and PD are virtually identical. [The fcat that one is a commercial development of the other might have something to do with that.] I would say that main difference is in the level of Do-I-Yourself which comes along with PD. In MAX/MSP, there are a lot of ready mades which might get you going a little faster, but these ready-mades are also often "black-boxes" which you cannot see or change the internal workings of. On the other hand, in PD you will spend more time developing patches from low-level objects up, but you will gain a better understanding of how they work and will be able to customize them completely for your own needs and sounds. In other words, you won't just be fiddling with someone else's sliders. good luck, d. -- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 137: "Repetition is a form of change"

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problem with GEM 0.90 on win2k
by rainer _ 30 Jun '04

30 Jun '04

hi list, i have a problem with GEM 0.90 on win2000. gem is loading fine on startup, no error messages in the console window. the only drawback: everything is running incredibly slowly (compared with gem0.87+cvs, on the same computer) specs: amd athlon 1.4 GHz, Geforce2 GTS pro + fresh nvidia drivers directx 9.0b, all HW acceleration enabled pd version 0.37-1 on an other machine (p4 2.4GHz, Geforce4, win2k) everything's ok. any ideas? thanks rainer _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus

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Re: [PD] thread_sf - possible patch changes needed
by Tim Blechmann 30 Jun '04

30 Jun '04

> I tested it on OSX a little while ago and couldn't get it to compile. > If you go back to the list history I sent in all my error messages and > that type of thing. > I think you even responded to me. > Have there been changes since then? i did some changes in initializing the thread ... but i haven't got any response about the osx behaviour of that since then ... i'd really like to hear if it's working now ... if not, i'll probably have to stop the main thread until the helper thread is ready... cheers... -- mailto:TimBlechmann@gmx.de ICQ: 96771783 After one look at this planet any visitor from outer space would say "I want to see the manager." William S. Burroughs

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Pd-list June 2004