Pd-list January 2008

pd-list@lists.iem.at

133 participants
232 discussions

pdp_yqt
by Luiz Naveda 08 Jan '08

08 Jan '08

Dear list, Problems with pdp_yqt - dozens of codecs tested (suggestions found here), all get: pdp_yqt: unsupported video codec Problems with pdp_qt also System: MACBOOK PRO 2.4, MAC OSX 10.5 running Pd version 0.40.3-extended-20071231 Any suggestion? Best Luiz -- Luiz Naveda _________________________________ Mobile: + 32 0487 245594 IPEM - Dep. of Musicology Blandijnberg 2 Ghent University, Ghent, B-9000 Belgium ^v^ ^v^ ^v^ ^~^~^~^~^~^~^~^~~^~~^~~^~^~^~~~^^~^~~~~ ^~^~^~^~^~^~^~^~^~^~~^~~^~~^~^~^~~~^~~~

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maxlib help files makefile cvs
by robcanning 08 Jan '08

08 Jan '08

seems the make file for maxlib in cvs is looking for help/help-*.pd instead of help/*-help.pd cp: cannot stat `help/help-*.pd': No such file or directory localhost:/home/robc/pd/externals/maxlib/help# ls allow-help.pd etc. rob c

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Re: [PD] text based pd patching
by alex 08 Jan '08

08 Jan '08

On Mon, 2008-01-07 at 19:35 +0100, Frank Barknecht wrote: > [bang( > x > | [r stop] > | x > | | > x x > [until] > x > | > x > [; stop bang( Yep that would be quick to adapt to. To save me doing more reverse engineering are there some docs for the (tcl?) .pd file? cheers alex

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building a reactable
by Agent Engram 08 Jan '08

08 Jan '08

just so everyone knows why I am trying to get all this working. I have most of it working in windows, i have also written a Java server to Pd for full OCS level resolution, willing to share. I am really hoping I can get this working in linux instead. I am going to post a blog on this, I will make sure everyone here finds out more as it proceeds. THANKS to everyone for helping me! -- ----------- i am an agent implanted into your unconscious when you abducted by the travelers. look for signs of me in your life.

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Installing GridFlow on MacOSX
by Jack 07 Jan '08

07 Jan '08

Small improvement but i get an error. If someone could help me ? (I want to create a tutorial for MacOsX users after). thx Jack ~/Desktop/Mickael/gridflow-0.9.0 rybn12$ ./configure This is the GridFlow 0.9.0 configurator within Ruby version 1.8.1-2003-12-25 [gcc3] GNU C++ Compiler 3 (or 4): --------------------------------------------> found [stl] C++ Standard Template Library: -----------------------------------------> found [gcc64] GNU C++ in 64-bit mode: ----------------------------------------------> missing (gcc: error: 'off_t' was not declared in this scope) [libruby] Ruby as a dynamic library: -----------------------------------------> found [librubystatic] Ruby as a static library: ------------------------------------> disabled (using libruby instead) [libtclh] Tcl headers <tcl.h>: -----------------------------------------------> found [libtcl] Tcl as a dynamic library: -------------------------------------------> found [pentium] Pentium-compatible CPU: --------------------------------------------> missing (powerpc-darwin instead) [mmx] MMX-compatible CPU (using NASM): ---------------------------------------> disabled (would need pentium) [usb] USB Library: -----------------------------------------------------------> missing (where is usb.h ?) [x11] X11 Display Protocol: --------------------------------------------------> found [x11_shm] X11 acceleration by shared memory (XSHM plugin): -------------------> found [sdl] Simple Directmedia Layer (experimental support): -----------------------> missing (gcc compilation error) [objcpp] GNU/Apple ObjectiveC++ Compiler: ------------------------------------> found [quartz] Apple Quartz/Cocoa Display: -----------------------------------------> found [aalib] Ascii Art Library: ---------------------------------------------------> found [jpeg] JPEG Library: ---------------------------------------------------------> found [png] PNG Library <libpng12/png.h>: ------------------------------------------> found [videodev] Video4linux Digitizer Driver Interface: ---------------------------> missing (where is linux/videodev.h ?) [mpeg3] HeroineWarrior LibMPEG3 <libmpeg3/libmpeg3.h>: -----------------------> missing (where is libmpeg3/libmpeg3.h ?) [mpeg3] HeroineWarrior LibMPEG3 <libmpeg3.h>: --------------------------------> missing (where is libmpeg3.h ?) [quicktimeapple] Apple's QuickTime: ------------------------------------------> found [quicktimehw] Plaum's LibQuickTime (try #1) <lqt/quicktime.h>: ---------------> disabled (using quicktimeapple instead) [quicktimehw] Plaum's LibQuickTime (try #1) <quicktime/quicktime.h>: ---------> disabled (using quicktimeapple instead) [quicktimehw] Plaum's LibQuickTime (try #2) <lqt/quicktime.h>: ---------------> disabled (using quicktimeapple instead) [quicktimehw] Plaum's LibQuickTime (try #2) <quicktime/quicktime.h>: ---------> disabled (using quicktimeapple instead) [puredata] PureData (or DesireData): -----------------------------------------> found [desiredata] DesireData: -----------------------------------------------------> missing (gcc: error: 'gobj_subscribe' was not declared in this scope) [gem09] PureData GEM (source code) with m_holdname: --------------------------> missing (gcc: error: `CPPExtern' has not been declared) [gem08] PureData GEM (source code) without m_holdname: -----------------------> missing (gcc compilation error) [opencv] Intel OpenCV: -------------------------------------------------------> missing (gcc compilation error) [fftw] FFTW (Fastest Fourier Transform in the West): -------------------------> missing (gcc compilation error) generating ./config.make generating config.h See ./config.log if you want the details of the configuration tests. If you are satisfied with that configuration, you may go on, and do "make". "make install" is not needed anymore, just move your gridflow directory to "lib/pd/extra". If you get stuck, you could contact the author about it, but first make sure you read "doc/install.html". ~/Desktop/Mickael/gridflow-0.9.0 rybn12$ make ruby -w base/source_filter.rb base/grid.h base/grid.h.fcs ruby -w base/source_filter.rb base/main.c base/main.c.fcs g++ -I/sw/include -I/usr/local/include -I/Users/rybn12/include -I. -xc ++ -fno-operator-names -fno-omit-frame-pointer -I/usr/X11R6/include - I/sw/lib/ruby/1.8/powerpc-darwin -I/usr/include -I../Gem/src -I../Gem/ src -falign-functions=16 -DMACOSX -Wall -Wno-unused -Wunused-variable -g -fPIC -I. -O2 -funroll-loops -c base/main.c.fcs -o base/main.o base/main.c.fcs:39:22: error: execinfo.h: No such file or directory base/main.c.fcs: In function `void blargh()': base/main.c.fcs:522: error: 'backtrace' was not declared in this scope base/main.c.fcs:523: error: 'backtrace_symbols' was not declared in this scope base/main.c.fcs: At global scope: base/main.c.fcs:297: warning: 'ciFObject' defined but not used make: *** [base/main.o] Error 1

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gem: can't load library
by Agent Engram 07 Jan '08

07 Jan '08

i figured out how to build pd, i needed the tcl-devel stuff. i was hoping that Gem built with it but alas that would be too easy. when I run: pd -lib gem i get... gem: can't load library so do I have to build Gem? that is a major pain in linux... -- ----------- i am an agent implanted into your unconscious when you abducted by the travelers. look for signs of me in your life.

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tabread4~ and using it varispeed with long soundfiles
by David McCarthy 07 Jan '08

07 Jan '08

hello Im trying to re-create something like traktor dj program on pd using tabread4~ Coming up against that problem when you use big soundfiles (a kind of bit depth distortion) Wondering has anyone found a solution for this? much obliged, David.

3 2

mrpeach tcpclient float to string decoder, mayby str ?
by Damien Henry - Voxler 07 Jan '08

07 Jan '08

Hello ! I'm testing tcpclient from mrpeach, my goal is to use julian (http://julius.sourceforge.jp/en_index.php?q=en/index.html) as an hmm decoder for realtime speech recogition. I use tcpclient to establish the link beetween julian and it works perfectly. Of course tcpclient returns lists of floats as it is designed for this, but i need to convert thoses lists of floats to list of symbols. I've guess that the str object (also from mrpeach) is there for this purpose, is it right ? Anyway I don't succed to create some outlets of the str object (I've read the doc, the lib is well installed, and some dummy str are created, even when I pass an argument to it). So here my 2 questions : 1) is STR the solution, and then how to use it ? 2) if str is not design to transforms the lists of floats into strings, does somebody has already done this and whant to share it with me ? Thanks in advance, Cheers, Damien.

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Re: [PD] per-pixel time based(with memory) effects, is it possible with fragment shaders?
by vade 07 Jan '08

07 Jan '08

Hi You can completely do what you want on the GPU with a shader or shaders. In fact, the very shader you describe exists from cycling74 and is included with jitter. As for dealing with color planes, the RGBA values, its VERY easy to do with shaders. You simply sample a texture with: vec4 mytexture = texture2DRect(textureSampler, textureCoordinate); and then you can address you individual vector components with mytexture.a mytexture.r mytexture.g mytexture.b each as a floating point value. :) On Jan 7, 2008, at 12:28 AM, Batuhan Bozkurt wrote: > This is a very elegant solution for a delay effect I should say. > I've never known something called "3d texture" exists but it > completely makes sense. I've searched through documentation and the > list for gem support for such thing but no luck yet. But thanks for > the shader and the idea anyways! > > The problem here is that, I actually need a more generalised > framework of working with time and past frames(or pixels) when > dealing with time based effects. This vertex shader approach with 3D > texture and a 2D map probably would not help let's say, if I wanted > to use an averaging lowpass filter(depending on past pixel values) > to the R G and B values of each pixel seperately. > > I'd like to know if there is any way to hold values back in > buffers(like arrays) on shader level and make operations on that > data by shader programming. So maybe I could say "get current value > and average it with the previous value and set it as the new current > value" or something like that. If there is a way, than I'd like to > dig more deeply into it, but if this question looks very stupid than > I'm probably getting the concept of graphics pipeline and purpose of > shading language completely wrong so maybe I should stop wasting > time on thinking like this and try to find other approaches. > > BB > > vade wrote: >> This is entirely possible, however you would want to use a 3D >> texture, something on the order of dimensions 320 by 240 by x >> (where x is how many frames of time 'back' you want to go). This >> will be relatively heavy video memory wise I would imagine. >> However, I have a shader for you that does this. >> >> Absolutely no idea what so over if GEM can deal with 3D textures. >> Id assume since it has low level openGl support it should be able >> to, but how to get 2D video frames into that 3D texture via pix_xxx >> I have no idea. >> >> Here is the shader, written by Andrew Benson from Cycling74 iirc. >> >> This is sans vertex shader, but the vertex shader is basically a >> passthrough, so its very simple. >> >> texa is a 2d lookup table - greyscale, where the luminance of the >> pixel at the point determines how far back in time to go. This >> shader assumes a 512x512 map, but you could make that dynamic by >> passing a varying variable from the vertex shader that looks at the >> dims of the 3D texture. >> >> HTH. >> >> varying vec2 texcoord0; >> varying vec2 texcoord1; >> uniform float slice; >> uniform sampler3D texo; >> uniform sampler2DRect texa; >> const vec4 coeff = vec4(0.299, .587, 0.114, 0.); >> >> void main( void ) >> { >> float v1 = dot(texture2DRect(texa,texcoord0*vec2(512.)),coeff); >> //assumes 512 x 512 slice map. Pretty arbitrary... >> vec4 v0 = texture3D(texo, vec3(texcoord0.xy,v1)); >> gl_FragColor = v0; >> } >> >> >> On Jan 6, 2008, at 4:21 AM, Batuhan Bozkurt wrote: >> >>> Hello, >>> >>> Let me start off by saying that I don't have much experience with >>> computer graphics, so my knowledge is very limited on this area, I'm >>> more of an audio guy but I have some ideas in mind that would >>> apply to >>> graphics well. I just want to experiment. >>> >>> I want to give a simple example to show my question. Suppose I >>> have a >>> video running and I want to delay each pixel between 0 and a maximum >>> time seperately. This is the most basic time based effect I can >>> think >>> of. So for a 320x200 video for example, I would need 64000 delaying >>> units running seperately and to be able to do this in realtime, I >>> think >>> I'd need to use GPU for computation. >>> >>> So I'm thinking of using pixel shaders. But I'm not really sure if >>> this >>> is possible or not with it. I grabbed the orange book to have an >>> idea >>> about the process, I did not have much time tolook in detail but I >>> could >>> not find any references to such an operation that made me think >>> that I'm >>> on the wrong track. So before going any further learning GLSL, I'd >>> like >>> to have your ideas on this. >>> >>> Is GLSL along with GEM is a nice way to do such an operation? Is >>> it even >>> possible to do it in realtime? >>> If GPU powered realtime operation is not possible, is there any tool >>> that you know that is capable of doing such things(realtime or >>> offline)? >>> I have many ideas on processes that modifies pixels which are >>> dependant >>> on the states of pixels before them(i.e. with memory) and I'm >>> trying to >>> find a way to implement them. Any help is appreciated. >>> >>> Thanks >>> BB >>> >>> _______________________________________________ >>> PD-list(a)iem.at mailing list >>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list >> >> >

2 3

per-pixel time based(with memory) effects, is it possible with fragment shaders?
by Batuhan Bozkurt 07 Jan '08

07 Jan '08

Hello, Let me start off by saying that I don't have much experience with computer graphics, so my knowledge is very limited on this area, I'm more of an audio guy but I have some ideas in mind that would apply to graphics well. I just want to experiment. I want to give a simple example to show my question. Suppose I have a video running and I want to delay each pixel between 0 and a maximum time seperately. This is the most basic time based effect I can think of. So for a 320x200 video for example, I would need 64000 delaying units running seperately and to be able to do this in realtime, I think I'd need to use GPU for computation. So I'm thinking of using pixel shaders. But I'm not really sure if this is possible or not with it. I grabbed the orange book to have an idea about the process, I did not have much time tolook in detail but I could not find any references to such an operation that made me think that I'm on the wrong track. So before going any further learning GLSL, I'd like to have your ideas on this. Is GLSL along with GEM is a nice way to do such an operation? Is it even possible to do it in realtime? If GPU powered realtime operation is not possible, is there any tool that you know that is capable of doing such things(realtime or offline)? I have many ideas on processes that modifies pixels which are dependant on the states of pixels before them(i.e. with memory) and I'm trying to find a way to implement them. Any help is appreciated. Thanks BB

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Pd-list January 2008