Pd-list October 2003

pd-list@lists.iem.at

141 participants
275 discussions

gem renderchain question..
by doktorp 26 Oct '03

26 Oct '03

Hi. I have a quick question regarding gem and its renderchain. I have a patch : ( http://homepage.mac.com/doktorp/vade.tar.gz ) that im expermineting with. very rudimentary.. forgive me =X im using send and receive13 to bounce gem renderchains through filters/effects. or, I was attempting to do that. If I have a pix_filmYUV object that is being sent out, say, pix_one, and then I have a pix_texture2 object thats displaying it via a (msg) 'pix_one' -> 'prepend set' ->receive13 -> 'rectangle 4 3' (this is all a bit more clear in the patch). I can see the image just fine. now: if I set ANOTHER effect, say pix_blur, to only RECEIVE pix_one (and not set the destination to explicitly SHOW the output from pix_blur (namely 1_blur is the name of the output), *I still see the blur effect on pix_one, even though the pix_blur is not connected to the output* Im sure this is how GEM defaults, but not how im used to working (with jitter). is there a way to separate (yes I tried the separate object, that only works for translations -documentation..) these renderchains. essentially id like to have just one destination and be able to set up a filterchain by connecting a few of these things together, and just toggling the output. sorry to bother you with this but im confused as to how the renderchain actually works. thanks for any information and comments about the patch. I want to do things as efficiently as possible. thanks! -dok

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GEM Docs
by 0 26 Oct '03

26 Oct '03

Is there any up to date documentation of GEM? The manual that comes with it says there is no way to process a video file, but those docs were written before pix_film. Any one know of anything? Thanks

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mandrake linux pd.rpm? -stream es1370
by Pixelcorrection＠wmconnect.com 26 Oct '03

26 Oct '03

hay frank In the pd documentation, on page x3.htm#s4, it list under the LINUX only commands -stream as being a command line argument to envoke an es1370 audio card. See below. (linux specific audio:) -frags -- specify number of audio fragments (defeats audiobuf) -fragsize -- specify log of fragment size ('blocksize' is better...) -stream -- use stream mode audio (e.g., for es1370 audio cards) -alsa -- use ALSA audio drivers-alsadev -- ALSA device # (counting from 1) or name: default hw:0,0 bye, pixelc.

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Re: GEM vs Jitter a newbie request for opinions (newbie sez thanks)
by JHAVE 25 Oct '03

25 Oct '03

Thanks to all for the helpful info. Especially, to Ben for widening my idea of what resources exist. > > There are a large number of Graphics/Video libs for PD including: GridFlow > (matrix operations), Framestein (windows only), PDP (something more like > softVideo), and PiDiP (nice extra stuff on top of PDP), and of course Gem. So now my task is to try to narrow my search to the appropriate tools for the task. Here is what I am planning (its not too complex): grab video from camera in real-time periodically save it to a file(s) chroma key it as it is displayed concurrently display previously-saved video(s) behind the current real-time video apply diverse effects in real-time to the previously-saved video files that have been loaded in vary the amount of these effects according to gradiant input from a motion sensor Could anyone suggest what combination of these tools might be most appropriately suited for this set of tasks? Thanks in advance, Jhave

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mandrake linux pd.rpm? -stream es1371
by Pixelcorrection＠wmconnect.com 25 Oct '03

25 Oct '03

Hello, Does anyone know of a good rpm for mandrake 9.1, so that I can run pd using the "-stream" command for the motherboard es-1371 sound driver? I want to get ALSA and Jack eventually, but for now it would be nice to get some results while I learn more about rebuilding the kernal. Please help a Windoz trying to build his first Linux PD box. -pixelc.

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MP3cast~ [os x]
by __|||a||kdg 25 Oct '03

25 Oct '03

hi, having this error below when trying to load any mp3~ object, they are supposed to be correctly installed in: lib/pd/extra] nmp% ls . . mp3amp~.pd_darwin mp3cast~.pd_darwin mp3fileout~.pd_darwin mp3streamin~.pd_darwin mp3streamout~.pd_darwin mp3write~.pd_darwin . . this is the error message: dyld: /usr/local/bin/pd Undefined symbols: _get_lame_version _lame_close _lame_encode_buffer_interleaved _lame_encode_flush _lame_get_num_channels _lame_init _lame_init_bitstream _lame_init_params _lame_set_brate _lame_set_copyright _lame_set_disable_reservoir _lame_set_emphasis _lame_set_in_samplerate _lame_set_mode _lame_set_num_channels _lame_set_original _lame_set_out_samplerate _lame_set_padding_type _lame_set_quality pd_gui: pd process exited /Applications/Pd.command: line 3: 9925 Trace/BPT trap /usr/local/bin/pd -rt logout [Process completed] i hope anyone out there is using this objects happily in OSX/ ------< h.c? [I WILL TRY TO COMPILE PiDiP ALSO, ANYONE CAN POST ON THAT? os x related] thanks again /nmp ps: i have installed finally ffmpeg-0.4.8 and lame -3.93.1 both reside in::: :/usr/local/bin] nmp# ls .DS_Store bzfgrep bzmore ffplay gsbj gsnd pdf2dsc pf2afm ps2epsi ps2ps bdftops bzgrep cyclist fixmswrd.pl gsdj lame pdf2ps pfbtopfa ps2pdf pv.sh bz2cat bzip2 dvipdf font2c gsdj500 lprsetup.sh pdfopt pj-gs.sh ps2pdf12 sysvlp.sh bzcat bzip2recover eps2eps gnutar gslj lpstyl pdreceive printafm ps2pdf13 unix-lpr.sh bzegrep bzless ffmpeg gs gslp pd pdsend ps2ascii ps2pdfwr wftopfa

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OSC for pd?
by David Kendall 25 Oct '03

25 Oct '03

Hello Everyone I am new to this list, so you will have to excuse me if this message is redundant. here is my question: I have just downloaded Open Sound Control and can not get it running. Is there is something obvious that I am missing? I would appreciate any help... thanks! David

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Re: [PD] GEM vs Jitter a newbie request for opinions
by zmoelnig＠iem.at 25 Oct '03

25 Oct '03

Zitiere chris clepper <cgc(a)humboldtblvd.com>: > easily top anything a Max based solution could produce. Another > option would be to embed some sort of scripting right into Pd/GEM > that would allow for things like : > 5000.do(rotate(triangle(size,position.random),random(x,y,z))) which > would give you 5000 randomly positioned and rotated triangles. Try > that in _any_ of these current systems and you'll see why I'm > suggesting this alternative! while it really gets unhandy when the random positions should be kept during rendering cycles (see attached file tritest2.pd) i think it the gem-code stays elegant if the random position/rotation is allowed to be recalculated each frame. but of course, sc code is most often the most elegant solution for multiple instances of objects (due to its very nature) and of course, 5000 triangles without display-lists is slow (as in the example). > > Which is easier to learn? Well if you have used Max/Pd for audio or > midi then GEM is probably easier because it follows Max conventions a > bit better. but on the other hand, it really confuses people, because it is scene-graph based (exept for the pix_ thingies) instead of signal-flow based. mfg.asdr. IOhannes

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PDP vs Gridflow
by Yves Degoyon 25 Oct '03

25 Oct '03

hi, about this thread comparing PDP and Gridflow, there's one thing good into having typed data is that they don't need expensive conversion whenever you want to use them in an i/o operation. and i care about performance... recently, a video artist also told me : "mm, jitter, yeh, that's about doing abstract math with images but i don't actually need to do that" ( and me neither ) so i don't think i'll go that way... but, it's good to have different and complementary tools... so, stop the war. cheers, sevy

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Re: PD and Digi 002 on OS X
by Mitchell Turner 25 Oct '03

25 Oct '03

Stefan, I have this same problem with the newest DigiCore Audio driver and the Mbox. I was able to use Pd and the Mbox with the DigiCoreAudio driver 1.2. You might try using that Driver version with the 002. I still have a copy of the DMG file, if you mail me off list I'll send you a copy. Mitch On Friday, October 24, 2003, at 04:49 PM, pd-list-request(a)iem.at wrote: > Message: 5 > Date: Fri, 24 Oct 2003 19:13:28 +0200 > From: Stefan Tiedje <Stefan-Tiedje(a)addcom.de> > To: pd-List <pd-list(a)iem.at> > Subject: [PD] PD and Digi 002 on OS X > > Congratulations to the OS X Installer, but I have a problem which is > probably digidesigns fault (if you are not hooked on ProTools (I am) I > strongly advise everybody not to invest in dizzydesign) > > Of course it would be nice if it is possibly to use the Digi 002 with > pd, as its sitting here and has obviously better and more converters > than the G4 built in audio ;-) > > But i get the following messages into the terminal when starting: > > sh-2.05a$ /usr/local/bin/pd; exit > DigiCoreAudioDriver> Found 10 entries in 'SupportedApps.txt'. > Error number -9997 occured opening portaudio stream > Error message: Invalid device ID. > > When adding PD in the Digidesign Core Audio Setup application it tells > me its selected already (but does not show it in the list) > > Beside this problem, I have not found a very basic Documentation or > Getting Started for PD. Whats listed at pure-data.org seems to be way > too advanced or specialized. (Even for old Maxers as I am) > > Best > > Stefan > Mitchell Turner, Ph.D. Assistant Professor of Music LaGrange College 601 Broad Street LaGrange, GA 30240 USA Office: 706-880-8015 FAX: 706-880-8028 mturner(a)lagrange.edu http://mmturner.home.mindspring.com

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Pd-list October 2003