Pd-list March 2010

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152 participants
270 discussions

data structures: variable array element + variable resolution?
by João Pais 15 Mar '10

15 Mar '10

Hi, I had a couple of questions about data structures: - I have an array based on template X. I wanted to make variations on the drawing of that array, by changing a variable in template X. The thing is, I can't access X when it's inside an array. Is there a way to get a pointer to the X templates inside an array? I also tried creating an extra instance of X and change the variable of that template. Unfortunately it had no effect on the same templates inside the array. - I have a variable being plotted with a step value of 1: [plot -y y(0:100)(-1:1)(1) ...]. I wanted to change the step value on the fly, but when I wrote (step) instead of (1), there was a "parse error". Does that mean that the step is always the same at each template? Is isn't possible to assign a variable to the step value? If if isn't possible to do any of these operations, I might be able to circumvent the problem by deleting and creating new objects. Afaik it isn't possible to edit an object, it's necessary to cut it and create a new one. Am I correct, or is there a new possibility I don't know yet? Thanks, JoÃ£o Pais -- Friedenstr. 58 10249 Berlin (Deutschland) Tel +49 30 42020091 | Mob +49 162 6843570 Studio +49 30 69509190 jmmmpais(a)googlemail.com | skype: jmmmpjmmmp

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Re: [PD] Compiling pdvjtools - cannot find lswscale
by slario＠gmail.com 14 Mar '10

14 Mar '10

Hello Markus, check if you have the development files for libswscale installed libswscale-dev hope that helps, Sergi. pdvjtools site: http://hangar.org/pdvjtools   Message: 3 Date: Fri, 12 Mar 2010 15:55:29 +0100 From: Markus Demmel <az(a)zankapfel.org> Subject: [PD] Compiling pdvjtools - cannot find lswscale To: pd-list(a)iem.at Message-ID: <4B9A55E1.1020600(a)zankapfel.org> Content-Type: text/plain; charset=windows-1252; format=flowed Hi, i'm using pd-0.42-5 with Gem 0.92-2 built from source and now i want to compile the pdvjtools, which worked fine on my other computer, but is missing swscale. when i run make: cc -DPD -I/home/az/PureData/pd/pd/src -Wall -W -g -I../pdp/include -I../../Gem/src -I/usr/include/ffmpeg -fPIC -O6 -funroll-loops -fomit-frame-pointer -o "colorgrid/colorgrid.o" -c "colorgrid/colorgrid.c" colorgrid/colorgrid.c: In function ?colorgrid_draw_new?: . . . colorgrid/colorgrid.c: In function ?colorgrid_free?: colorgrid/colorgrid.c:1560: warning: unused parameter ?x? cc -Wl,--export-dynamic -shared -fPIC -o "colorgrid/colorgrid.pd_linux" "colorgrid/colorgrid.o" -lavcodec -lavformat -lavutil -lswscale -lquicktime -lstdc++ -lc /usr/bin/ld: cannot find -lswscale collect2: ld returned 1 exit status make: *** [colorgrid/colorgrid.pd_linux] Fehler 1 I get this error. locate swscale: /usr/lib/libswscale.so.0 /usr/lib/libswscale.so.0.7.1 /usr/lib/i686/cmov/libswscale.so.0 /usr/lib/i686/cmov/libswscale.so.0.7.1 /usr/share/doc/libswscale0 And then i tried to add -L/usr/lib but i still get the same error. Any ideas? Regards, Markus ------------------------------

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Image in a patch?
by Pierre Massat 14 Mar '10

14 Mar '10

Hi all! I'd like to make a simple audio program for very young kids, something to train them at identitying sounds (like "meow!" --> cat). The audio part won't be a problem, but i not sure what i can do graphically with Pd (i ve used it for sounds only). For now i just need a way to embed images in my patch, so that the kids can click on the right animal when they hear it. As far as i know GEM is not what i'm looking for since everything is displayed in another window (and there can be more than one apparently). All i need is just a simple control with a texture, or just a canvas with an image in it. Is this possible at all in Pd? Any hint? Pierre

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Check out my photos on Facebook
by Matt Davey 14 Mar '10

14 Mar '10

Hi Pd, I set up a Facebook profile where I can post my pictures, videos and events and I want to add you as a friend so you can see it. First, you need to join Facebook! Once you join, you can also create your own profile. Thanks, Matt To sign up for Facebook, follow the link below: http://www.facebook.com/p.php?i=570391438&k=5XE6P6SX4T6G6BD1YE55YVPWR6BAYUZ… Already have an account? Add this email address to your account http://www.facebook.com/n/?merge_accounts.php&e=pd-list@iem.kug.ac.at&c=4f1… was invited to join Facebook by Matt Davey. If you do not wish to receive this type of email from Facebook in the future, please click on the link below to unsubscribe. http://www.facebook.com/o.php?k=3fc537&u=100000871282141&mid=20706fdG5af344… Facebook's offices are located at 1601 S. California Ave., Palo Alto, CA 94304.

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Re: [PD] Pd-Dom for abstraction chaining
by Marco Donnarumma 14 Mar '10

14 Mar '10

> The focus of Pd-Dom is very different though, it does dynamically > "chain" abstractions that send and receive audio. It handles also > loadbang to the freshly created instances. This should all be error free > and within 0 latency (using subpatches). > Hi Enrique, Pd-Dom works looks great, thanks for sharing it. Just a question (I know i should simply try it myself, but I don't have the time atm, apologies)... Can Pd-Dom manage GOP abstractions with different dimension than a non-GOP object? I'm curious 'cause I'm actually working on something really similar to Pd-Dom but with a slightly different approach. I'm trying to use dynamic patching to easily build GUI chains with whatever GOP abstraction. I use unofficial dyn-patching methods too, and iemguts. although I still have to fix few bugs the method works pretty fine so far. So now I wonder whether implement your Pd-Dom.. thanks, -- Marco Donnarumma aka TheSAD Independent New Media Arts Professional, Performer, Teacher - Edinburgh, UK PORTFOLIO: http://marcodonnarumma.com LAB: http://www.thesaddj.com | http://cntrl.sourceforge.net | http://www.flxer.net EVENT: http://www.liveperformersmeeting.net

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Re: [PD] adding audio signals
by Derek Holzer 14 Mar '10

14 Mar '10

No difference really. Audio inputs in Pd are summing already. Using [+~] just makes it explicit, perhaps not a bad idea for documentation. D. On 3/13/10 10:49 PM, ailo wrote: > From some of the examples in the Help Browser I've noticed the use > of [+~] when adding audio signals to one single signal. > > Until now, I've mostly just connected several signal outputs to a > single input, not using [+~]. And there doesn't seem to be any > problem. > > What would be the difference in these two approaches? -- ::: derek holzer ::: http://macumbista.net ::: ---Oblique Strategy # 83: "How would someone else do it?"

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adding audio signals
by ailo 13 Mar '10

13 Mar '10

From some of the examples in the Help Browser I've noticed the use of [+~] when adding audio signals to one single signal. Until now, I've mostly just connected several signal outputs to a single input, not using [+~]. And there doesn't seem to be any problem. What would be the difference in these two approaches?

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Nightly Ubuntu Builds
by Jonathan Wilkes 12 Mar '10

12 Mar '10

Hi list, The jaunty and hardy builds since the 10th of March seem to have shrunk in size and are corrupted. -Jonathan

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Re: [PD] Pd-Dom for abstraction chaining
by Enrique Erne 12 Mar '10

12 Mar '10

> GridFlow 0.9.7 has [#many], which is an abstraction that makes a GOP > with many IEMGUI together. It doesn't support abstractions yet, which > requires some extra hacks that I'm adding soon. But I'm using several > externals for doing all that, because doing it without externals is too > limited to my taste. This sounds very promising. I can imagine that without externals it is way to limited. Especially deleting/changing existing stuff. The focus of Pd-Dom is very different though, it does dynamically "chain" abstractions that send and receive audio. It handles also loadbang to the freshly created instances. This should all be error free and within 0 latency (using subpatches). Pd-Dom itself has actually nothing to do with GUI. An example usage could be dynamically chaining of: [tone-generator] -> [filter] -> [envelope] -> [effect] or an FM orgy. All you need at the moment is an [pdom.r~] and [pdom.s~] inside your abstraction (this abs name subject to change). Each abstraction instance gets a $1 parameter and can be loaded (multiple times) in parallel. So you could do: [mega-synth] -> [delay] -> [mega-synth] -> [delay] -> [delay] Whether the abstraction adds to the incoming signal or modifies it, has to be decided by the abstraction author. IMO a compressor/limiter should change the incoming signal (*~), whereas a synth should only add signal (+~). Pd-Dom can also mixin abstractions that don't do dsp, and wont waste any cpu on additional send and receives. just use pd-dom.r (without the ~) One of the examples does dynamically create a GUI for testing purpose, but I think the examples should not have any dependencies on externals. Naturally if one would write an example using gridflow, I would like to add it. Just fork it on git and send me a pull request! :) At the moment Pd-Dom has 3 methods (messages) "add", "delete" and "set", that allow you to add an abstraction to the sound-chain or delete/set an existing one. There is some additional methods like vis that lets you open a specific instance of one instantiated abstraction. Pd-Dom for now is build with unofficial dyn-patching methods and works with Pd-Vanilla. In the future I'd like to build it, additionally, on top of dyn~. This with exactly same API so it works on both or fallback to pd-vanilla. eni

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Compiling pdvjtools - cannot find lswscale
by Markus Demmel 12 Mar '10

12 Mar '10

Hi, i'm using pd-0.42-5 with Gem 0.92-2 built from source and now i want to compile the pdvjtools, which worked fine on my other computer, but is missing swscale. when i run make: cc -DPD -I/home/az/PureData/pd/pd/src -Wall -W -g -I../pdp/include -I../../Gem/src -I/usr/include/ffmpeg -fPIC -O6 -funroll-loops -fomit-frame-pointer -o "colorgrid/colorgrid.o" -c "colorgrid/colorgrid.c" colorgrid/colorgrid.c: In function ‘colorgrid_draw_new’: . . . colorgrid/colorgrid.c: In function ‘colorgrid_free’: colorgrid/colorgrid.c:1560: warning: unused parameter ‘x’ cc -Wl,--export-dynamic -shared -fPIC -o "colorgrid/colorgrid.pd_linux" "colorgrid/colorgrid.o" -lavcodec -lavformat -lavutil -lswscale -lquicktime -lstdc++ -lc /usr/bin/ld: cannot find -lswscale collect2: ld returned 1 exit status make: *** [colorgrid/colorgrid.pd_linux] Fehler 1 I get this error. locate swscale: /usr/lib/libswscale.so.0 /usr/lib/libswscale.so.0.7.1 /usr/lib/i686/cmov/libswscale.so.0 /usr/lib/i686/cmov/libswscale.so.0.7.1 /usr/share/doc/libswscale0 And then i tried to add -L/usr/lib but i still get the same error. Any ideas? Regards, Markus

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Pd-list March 2010