Pd-list November 2005

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143 participants
298 discussions

OS X Makefiles
by david golightly 21 Nov '05

21 Nov '05

Hello again list, I'm trying to figure out how to write (or autogenerate) a makefile for Darwin that will turn source into a *.pd_darwin binary, including the appropriate libraries etc. There's got to be a simple answer for this but I'm just not looking the right places. By the way, I'm putting together a wiki page on how to get around in the darwin shell and compile things for GUI-spoiled OS X users like myself. It's easy enough to learn enough C to write a simple external from source, in fact Mr. Zmoelnig's How-To does an excellent job of explaining how to write the source but it doesn't include this one little crucial detail for compiling. Thanks in advance, David - ---=---^--- -^- -=- - - ^------ - -^---^- -- --^^ --=== homepage: http://www.davidgolightly.net

3 2

sndfiler - threaded soundfiler
by Georg Holzmann 21 Nov '05

21 Nov '05

Hallo! a threaded soundfiler for PD using libsndfile. by Tim Blechmann for pd_devel - also adapted now to have a threaded resize and to work with main pd. binaries+source here: http://grh.mur.at/software/sndfiler.html or in cvs ... LG Georg PS: README file: REQUIREMENTS: - pd >= 0.39 - libsndfile - for main PD you will also need threadlib: http://grh.mur.at/software/threadlib.html FEATURES: - threaded reading of multichannel soundfiles into arrays - threaded resize of arrays For more information look at the help patch ! See the file INSTALL for installation instructions.

5 14

vorbis_info_clear?? (Gem / linux)
by jake elliott 21 Nov '05

21 Nov '05

pdeople, i'm trying to run Gem with ubuntu's installs, but i get an error: /usr/lib/pd/extra/Gem.pd_linux: undefined symbol: vorbis_info_clear Gem: can't load library has anyone seen this before? i have all the vorbis libs + headers installed. why is Gem even talking about vorbis? thanks, jake

4 3

PD and latency on kernel 2.6.14.2-lsm
by thewade 21 Nov '05

21 Nov '05

Hi again! I am having trouble getting the latency of PD down. I asked the linux-audio-users list about kernel and jack related optimizations, so now I ask you: How do I tune PD to run as fast as possible? For example I can get jackd to run with a 10ms latency without XRUNS, but when I open pd and move the window around or change windows I get pops. I know this is largely because of gnome (and I would like some hints there as well), but what can I do about PD? Thanks! -thewade

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pd, jackd and connections
by Lazzaro Nicolò Ciccolella 21 Nov '05

21 Nov '05

Hi, if I launch pd with the options "-jack -audiodev 1 -channels 8", pd make a connection betwen all its eight channels to the in/out of the audio card. I would want to find a way to launch pd without to connect some channel to jack in order then being able to make some connections in independent way with the utility jack_connect. I am running 0.39-1, many thanks -- Lazzaro

3 2

Equation question
by day 5 21 Nov '05

21 Nov '05

Hallo, what formula might one be using to determine periodicity as rate in ms ? For example, say you know total frames of a video file and you know this file is 24 fps. You can say that it vibrates at 24 Hz so what is the periodicity of the wave in ms ? the appended patch implements an incomplete version the idea using [pix_film] ideally settings would be initialized using a [loadbang]. #N canvas 523 243 478 419 10; #X obj 38 178 pix_film; #X obj 37 138 gemhead; #X msg 130 122 bang; #X obj 130 142 openpanel; #X msg 130 162 open \$1; #X msg 130 101 auto \$1; #X obj 131 82 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1 ; #X obj 62 218 unpack 0 0 0; #X floatatom 61 250 5 0 0 0 - - -; #X floatatom 102 250 5 0 0 0 - - -; #X floatatom 142 250 5 0 0 0 - - -; #X text 53 267 length; #X text 99 267 width; #X text 142 267 height; #X obj 37 290 pix_texture; #X obj 36 322 rectangle 4 3; #N canvas 0 22 454 304 gemwin 0; #X obj 132 136 gemwin; #X obj 67 89 outlet; #X obj 67 10 inlet; #X msg 67 70 set destroy; #X msg 132 112 create \, 1; #X msg 198 112 destroy; #X msg 156 71 set create; #X obj 67 41 route create; #X connect 2 0 7 0; #X connect 3 0 1 0; #X connect 4 0 0 0; #X connect 5 0 0 0; #X connect 6 0 1 0; #X connect 7 0 3 0; #X connect 7 0 4 0; #X connect 7 1 6 0; #X connect 7 1 5 0; #X restore 216 327 pd gemwin; #X msg 216 308 destroy; #X text 212 287 Create window:; #X obj 36 105 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1 1 ; #X obj 167 219 random; #X obj 148 195 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1 1; #X floatatom 227 177 5 0 0 0 - - -; #X obj 168 195 metro 500; #X obj 213 103 random 250; #X obj 214 125 + 1; #X obj 213 43 random 250; #X obj 214 65 + 1; #X obj 255 65 spigot; #X obj 292 42 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1 ; #X floatatom 279 84 5 0 0 0 - - -; #X obj 228 151 spigot; #X obj 265 131 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1; #X floatatom 90 5 5 0 0 0 - - -; #X text 132 3 << manual frame index; #X obj 101 43 counter 240; #X msg 126 23 2; #X obj 102 25 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X msg 155 23 1; #X text 273 177 << WHAT TO MAKE THIS; #X text 288 191 TO GET RESULT THAT IS; #X text 273 205 IDENTICAL TO THE ORIGINAL; #X text 291 219 RATE OF PLAYBACK ???; #X connect 0 0 14 0; #X connect 0 1 7 0; #X connect 1 0 0 0; #X connect 2 0 3 0; #X connect 3 0 4 0; #X connect 4 0 0 0; #X connect 5 0 0 0; #X connect 6 0 5 0; #X connect 7 0 8 0; #X connect 7 0 20 1; #X connect 7 1 9 0; #X connect 7 2 10 0; #X connect 14 0 15 0; #X connect 16 0 17 0; #X connect 17 0 16 0; #X connect 19 0 1 0; #X connect 21 0 23 0; #X connect 22 0 23 1; #X connect 23 0 20 0; #X connect 23 0 24 0; #X connect 23 0 26 0; #X connect 23 0 35 0; #X connect 24 0 25 0; #X connect 25 0 31 0; #X connect 26 0 27 0; #X connect 27 0 28 0; #X connect 28 0 30 0; #X connect 29 0 28 1; #X connect 30 0 24 1; #X connect 31 0 22 0; #X connect 32 0 31 1; #X connect 33 0 0 1; #X connect 35 0 0 1; #X connect 36 0 35 1; #X connect 37 0 35 0; #X connect 38 0 35 1; any help appreciated ! ./d5

3 3

threadlib
by Georg Holzmann 20 Nov '05

20 Nov '05

Hallo! threadlib is a library for threaded patching and threaded PD externals heavily based on pd_devel code by Tim Blechmann (his detach/join for pd_devel) you can get it there (also binaries): http://grh.mur.at/software/threadlib.html or in cvs ... LG Georg PS: README file: ------------------------------------------------------------------------ PD objects for threaded patching: - detach run part of the patch in a helper thread - join synchronize messages to pd's main thread - sleep blocks the system for a specific time - threadedsf modified threaded soundfiler from pd_devel_0.38 WARNING: these objects (especially detach/join) are very experimental and may crash your patches if you use them in the wrong way, because some externals/internals are not threadsafe! Features for PD external programmers: - lockfree FIFO from pd_devel - callback system like in pd_devel: Instead of the idle callbacks, which are not really useable in current main pd, it uses clock callbacks - USAGE: you have to link your externals against threadlib (see sndfiler as an example) - ADVANTAGES: so it's possible to write threaded externals for main and devel pd with the same source code (using the lockfree FIFO and sys_callback) Many thanks to Tim Blechmann for his code and help! ------------------------------------------------------------------------ detach: Detach is working on control objects only, creates a helper thread and runs all functions of the following objects in this helper thread. If a message from that thread reaches a join object a callback for running the outlet function will be placed in the scheduler and run in the next scheduler loop - so you can synchronize the message with pd's main thread again. Detach is useful if you have a control operation that would be too CPU-intensive and would disturb dsp. join: The message to the inlet will be sent to the outlet during the next clock callback of the scheduler. It doesn't matter, which thread the message was coming from. Messages from the main pd thread will be rescheduled. Join can be used everywhere, where a message has to be rescheduled, this is also useful to place behind any threaded external calling the outlet functions from the helper thread, to make sure the following messages are being run in the main pd thread. !!! WARNING: !!! detach/join provide the possibility of threaded patching. beware of the risks: - not every pd object is thread-safe (if unsure, look at the source code or ask at the pd-list or me) - pd is not completely thread-safe itself - everything that is triggered by the detached message will be detached. don't mix threaded and non-threaded message paths unless you know what you are doing. use the join external to synchronize with the main pd thread!!!! - if detach/join crashes pd during a performance, don't complain ... - both detach and join have an overhead ... so only use them, if you really need threaded patching, e.g. have a subpatch that has to run for quite some time and would interrupt audio or something else

1 0

plugin~
by Ken 20 Nov '05

20 Nov '05

does not seem to be working for me with the latest cvs build. print sent to control yields, no method message. control messages do nothing to change parameters. pd 39-1 from cvs. is this working for anyone else?

2 1

osc-pd on win32
by Jeremy Giordano 20 Nov '05

20 Nov '05

I am pretty new to the world of pd, and as I learn more I am getting hooked. I would love to implement the OSC-PD external, but cannot seem to find it for windows. Does anyone know where to find a windows installer/ zip for Open Sound Control-PD? All of the links that I have tried seem to be broken. Thanks! --------------------------------- Yahoo! FareChase - Search multiple travel sites in one click.

2 1

Waveguide Modeling with [z~]
by Spencer Russell 20 Nov '05

20 Nov '05

Hullo, List, I'm playing around with some waveguide modeling stuff, mostly modeling strings, and my first trial patch is basically just a delay line that feeds back through a lowpass filter. It seems that the delay object of choice for long strings of delay (for if I want to apply non-linear interactions) is [z~] from zexy, but I can't change the delay time dynamically, and I'd like to be able to change the tuning on the fly. Is there a different delay object that I should be using? I'm just starting to look into waveguide modeling, with the intent of playing around with sympathetic vibrations, like on a sitar, where the input signal induces vibrations in a collection of tuned strings. If anyone has any nice waveguide example patches, I'd be interested to see them. thanks, spencer

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Pd-list November 2005