Pd-list July 2004

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129 participants
204 discussions

transparent video or: how to concatenate strings?
by andreithomaz 22 Jul '04

22 Jul '04

hello Malte, yes, I think you missed the point or I wasn't clear enough :-) I don't want to make all the video transparente; I want to use video as if I was using a 32-bit image, with full alpha support: that is, with some parts fully opaque, and others fully transparents, and some with some transparency. I received some e-mails about that; I am trying to use a lot of TIF files, and I am using makefilename (thanks to claudius) to change the images (so, I am simulating a video with an image sequence). It is working until now ;-) bye, andrei Message: 6 Date: Wed, 21 Jul 2004 13:26:46 +0200 From: Malte Steiner <steiner(a)block4.com> Reply-To: steiner(a)block4.com Organization: block 4 To: pd-list(a)iem.at Subject: Re: [PD] transparent video or: how to concatenate strings? andreithomaz wrote: >> hello list, >> >> I am using GEM on WindowsXP. I would like to mix videos with >> transparency (that is, with alpha channel). But I cann't find a codec >> that supports that. Do you know anyone? >> > > How do you mean that, do you just want to blend video into each other? No problem with that, you can add an alpha blending to each Gem stream. Something like [gemhead 50] | [color 1 1 1 0.5] | [alpha] | [pix_movie] | [square 4] makes one videotexture half transparent (the 0.5 is it), double it and put another number in gemhead, 51 maybe, for the other video. >> A way to solve the problem would be to show a image sequence (PNG files >> with 32 bit color). But, for that, I would have to transform a number >> into a string, and concatenate it with a string (for exemple, "frame" + >> number + ".png"). Is it possible to make that? >> >> thanks a lot, >> andrei >> > > But maybe I miss the point of your mail... Malte -- Malte Steiner media art + development -www.block4.com- -- RGB Design Digital www.rgbdesigndigital.com.br

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linux audio hardware
by ba 21 Jul '04

21 Jul '04

does anyone know of any audio interfaces (firewire or usb) that have 8 outs and work with linux? I need the 8 outs for a specific surround sound setup (16 bit is fine, 24 bit prreferable). i looked through the alsa guide, but I couldn't locate specific types. there are a lot of gaming cards or extremely expensive hardware. I'm looking for something in the middle, like the Firewire 410. actually, if that one works that would be perfect.

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Mandrake PPC 9.1+PD Installation
by slimboyfatboyslim 21 Jul '04

21 Jul '04

hi, I've tried to install 0.37 RPM distribution in Mandrake PPC 9.1 and I've the strange error of PD keeping asking for libtcl.so.0 and libtk.so.0, so I create a symbolic link to tcl8.3 and tk8.3, but it said the package doesn't match the architecture, so I -rpm -i --nodeps --ignorearch pd....rpm, I've installed the files under /usr/lib but when I typed pd, it said can't execute binary. I've also tried to compile the source by myself and it said it doesn't match the architecture and there's error for the port audio when I make install. Anyone try to install PD under Mandrake PPC 9.1 with PB 15'' 1 Gz, ATI radeon 8500 successfully? slimboyfatboyslim http://www.slimboyfatboyslim.org

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transparent video or: how to concatenate strings?
by andreithomaz 21 Jul '04

21 Jul '04

hello list, I am using GEM on WindowsXP. I would like to mix videos with transparency (that is, with alpha channel). But I cann't find a codec that supports that. Do you know anyone? A way to solve the problem would be to show a image sequence (PNG files with 32 bit color). But, for that, I would have to transform a number into a string, and concatenate it with a string (for exemple, "frame" + number + ".png"). Is it possible to make that? thanks a lot, andrei -- RGB Design Digital www.rgbdesigndigital.com.br

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Re: [PD] Iterative processes on textures in GEM
by thewade 21 Jul '04

21 Jul '04

Thanks I.M.Z. and all! I think that pix_biffer* is what Im looking for, but now I have a question of a different sort. I have GEM 0.90 running on my windows box (I never did get GEM to run without crashing PD in linux Fedora Core 2) and I can mae the [pix_buffer_write] and [pix_buffer_read] objects but the [pix_buffer] object as it complains of bad arguments: What are the arguments for each of these objects, and what are the inlets? Thanks for the continued help! -thewade PS. Im Going to use this to do some A-Life cellular automata stuff, has anyone else attempted this before using GEM or PDP?

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pd-0.37-1 failing to compile at vexp_if.c
by alexander 20 Jul '04

20 Jul '04

hi there, i´m trying to compile pd-0.37-1 on gentoo linux and it fails at the file extra/expr~/vexp_if.c i´m getting the following compiler error: vexp_if.c:47: warning: declaration of `exp' shadows a global declaration <built-in>:0: warning: shadowed declaration is here my gcc version is 3.3.2 what seems to happen here is that gcc takes exp as a reserved word, probably from math.h. which is kind of strange since math.h doesn´t get included at all here. i could be totally off with my guess, too, though... does anyone know what versions of gcc are not affected by this? or if this is a bug in gcc or if gcc will handle things like that this way from now on? any insight in this would be greatly appriciated, alexander -- alexander polzin | /dev/stderr fork unstable media http://www.fork.de

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types of distortion
by ba 20 Jul '04

20 Jul '04

what kinds of distortion are there other than clipping and foldover? I figure fold over is where the signal is flipped back instead of clipping. what are some other common waveshaping effects?

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display bitmap [errata corr]
by Lazzaro N. Ciccolella 20 Jul '04

20 Jul '04

Hi all, exists an object that simply can show one single bitmap within a patch of PD (like a bgimage, or better, like a pict-button)? for display images it is necessary to install a big lib as gem or exists a single external? pidip...? (apologize, pidip is a big video manipulation library, I meant to say gripd instead) GrIPD can make those ? thanks -- Lazzaro

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Re: Re: [PD] readanysf~ for os x
by n m 20 Jul '04

20 Jul '04

Hello, I have posted a zip file of the v0.13 readanysf~.pd_darwin that I've been using on PD under OS 10.3.4 here: http://www.cse.unsw.edu.au/~nickm/pd/ I'm fairly sure it should work without anything else when placed in the pd/extra directory. August - hope you don't mind - let me know if that's not ok by you. I'll remove the file in a few weeks. Nick -----Original Message----- From: august <august(a)alien.mur.at> To: Etienne Desautels <titi(a)sat.qc.ca> Date: Wed, 14 Jul 2004 23:03:33 +0200 (CEST) Subject: Re: [PD] readanysf~ for os x On Wed, 14 Jul 2004, Etienne Desautels wrote: > and i was wondering if you have release the OS X version and if there's > a binary somewhere? Right now I'm using sfread~ to play some sound > files because I need to be able to loop, seek and start to play the > file quickly but the seek function doesn't seem to work. So I would > like to use readanysf~ ! Etienne, yes, the new 0.13 release has succesfully been compiled and tested on OSX. However, I don't have the time to make a OSX package or binary. I know some on the list have it already running on OSX, so maybe they can give you binary if they have it. you will need gcc (comes with Xcode): download and "./configure, make, make install" the following: libsamplerate libmad libogg libvorbis libflac you will also need to install flext somewhere. then, for readanysf~, do another "./configure", and "make" wish there weren't so many dependancies, but that's how it is right now. best of luck -august. _______________________________________________ PD-list mailing list PD-list(a)iem.at to manage your subscription (including un-subscription) see http://iem.at/cgi-bin/mailman/listinfo/pd-list

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pdp+pidip Segmentation fault
by Lazzaro N. Ciccolella 19 Jul '04

19 Jul '04

Hi, I have installed pdp, and I have tried the patch of example: /pure-data/externals/pdp/doc/introduction/quicktime.pd I have loaded a movie (14 Mg) and all has worked perfectly. After I have installed pidip I reopen the same patch and if the libs (pdp/pidip) are both loaded when I load the same movie and try to start it PD close with this error message: Segmentation fault socket receive error: Connection reset by peer (104) I run jackd -d alsa and pd -jack -rt What I have mistaken ? Apologize if it is a basic question. -- Lazzaro

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Pd-list July 2004