Pd-dev June 2006

pd-dev@lists.iem.at

29 participants
58 discussions

heavy bug in pd 0.39-1 (and maybe others?)
by Christian Klippel 04 Sep '06

04 Sep '06

hi all, this happens on linux..... maybe on other platforms and/or pd-versions as well ... try the following (close all other applications first): 1. create a bang 2. edit its properties 3. as label enter \\ 4. apply the machine becomes sluggish almost instantly, x doesnt react to anything anymore, and heavy disk activity is going on .... only a emergency reboot helps ... greets, chris

2 1

HTTP requests external : cURL threads ?
by Alexandre Quessy 20 Jul '06

20 Jul '06

Hi, I am working on a simple external to do HTTP requests from PD. The idea is to implement a simple way to send and receive simple data to a web server. This is intended to work together with a set of classes that will interpret the GET variables as key and values pairs where the values can be similar to FUDI protocol messages. The web page would then answer with a FUDI message or so. I don't use Python because I want it to be very fast, totally portable and easy to install. (I also agree with Hans regarding small tools to make a constellation of low level objects) Here are my bugs : perhaps I am not very good yet with strings in C, but I have several errors when I try to execute this code from within PD as an external. Well, when I get malloc errors, it must be only about memory size arithmetics, but when it gets into segmentation faults, I was just wondering if it could be because cURL starts a new thread. I think that thread are not much appropriate in PD's context. Do you think this is the problem, or I am just still a bit bad with memory maths ? Also, if you have ideas about this external, please don't hesitate. I think I will rename it to http, as it is not intended in downloading whole files, but just for simple HTTP requests. See below for the current code, the makefile and one of the errors it creates. Alexandre Quessy http://alexandre.quessy.net ============================= error when using it ==================== pd wget-help.pd STACK_END old=0xbf9e5ffc; new=0xbf9efffc PDP: pure data packet PDP: version 0.12.4 * About to connect() to alexandre.quessy.net port 80 * Trying 64.15.134.165... * connected * Connected to alexandre.quessy.net (64.15.134.165) port 80 > GET /pd/curlme.php?asd=qwe+123 HTTP/1.1 User-Agent: Pure Data Host: alexandre.quessy.net Accept: */* < HTTP/1.1 200 OK < Date: Mon, 19 Jun 2006 16:03:44 GMT < Server: Apache < X-Powered-By: PHP/4.3.10-16 < Connection: close < Transfer-Encoding: chunked < Content-Type: text/html * Closing connection #0 socket receive error: Connection reset by peer (104) Erreur de segmentation ================== makefile ==================================== all: wget.pd_linux @echo "making wget" wget.pd_linux: wget.c gcc -DPD -O2 -funroll-loops -fomit-frame-pointer \ -Wall -W -Wshadow -Wstrict-prototypes \ -Wno-unused -Wno-parentheses -Wno-switch -o wget.o -c wget.c ld -export_dynamic -shared -o wget.pd_linux wget.o -lcurl -lc -lm strip --strip-unneeded wget.pd_linux rm wget.o ================== code : wget.c ================================ /** * [wget] is a Pure Data object for simple HTTP requests. * * @url http://alexandre.quessy.net/ * @author Alexandre Quessy <alexandre(a)quessy.net> * @license GNU General Public License 2006 */ #define PDWGET_VERSION "0.1.0" /* PD includes */ #include "m_pd.h" /* cURL and standard C libraries */ #include <curl/curl.h> #include <string.h> #include <stdlib.h> /* Download callback function prototype */ size_t wget_callBack(void *ptr, size_t size, size_t nmemb, void *x); /** * variables of the pd object */ typedef struct wget { t_object x_ob; /* The instance. Contains inlets and outlets */ t_outlet *x_outlet0; /* result string */ t_outlet *x_outlet1; /* HTTP error codes */ } t_wget; /** * HTTP request. */ void wget_request(t_wget *x, t_symbol *s, int argc, t_atom *argv) { post("wget : called request."); //curl_global_init(CURL_GLOBAL_NOTHING);//CURL_GLOBAL_ALL //t_symbol *sym_tmp = atom_getsymbol(&argv[0]); if (argc < 1) { post("wget : Error : needs arguments."); } else { t_symbol *sym_tmp = atom_getsymbolarg(0, argc, argv); char *url = sym_tmp->s_name; post("wget : requesting : %s", url); /* cURL context */ CURL *pContext = curl_easy_init(); if (pContext == NULL) { post("wget : Error : Null cURL handle."); } else { /* cURL options */ CURLcode pCode = curl_easy_setopt(pContext, CURLOPT_URL, url); curl_easy_setopt(pContext, CURLOPT_WRITEFUNCTION, wget_callBack, (void *) x); curl_easy_setopt(pContext, CURLOPT_VERBOSE, 1); curl_easy_setopt(pContext, CURLOPT_HEADER, 0); curl_easy_setopt(pContext, CURLOPT_NOPROGRESS, 1); curl_easy_setopt(pContext, CURLOPT_USERAGENT, "Pure Data"); curl_easy_setopt(pContext, CURLOPT_NOSIGNAL, 1); curl_easy_setopt(pContext, CURLOPT_TIMEOUT, (long) 5); /* cURL performing */ post("wget : Performing the request."); const CURLcode result = curl_easy_perform(pContext); if(CURLE_OK != result) { post("wget : Error from cURL: %s", curl_easy_strerror(result)); } else { /* HTTP code */ long lHttpCode; curl_easy_getinfo(pContext, CURLINFO_RESPONSE_CODE, &lHttpCode); post("wget : HTTP response code: %ld ", lHttpCode); //outlet_float(x->x_outlet1, (float) lHttpCode); } } post("[wget] cleaning up..."); /* cURL cleanup */ curl_easy_cleanup(pContext); post("[wget] Local cleaned up."); //curl_global_cleanup(); post("[wget] Global cleaned up."); //outlet_list(x->x_outlet0, gensym("A_FLOAT"), numCols+1, &atoms); // &atoms ?? } // else } /** * The representation of the class in PD. */ t_class *wget_class; /** * constructor */ void *wget_new(t_symbol *selector, int argc, t_atom *argv) { post("wget : creating a new object."); t_wget *x = (t_wget *) pd_new(wget_class); x->x_outlet0 = outlet_new(&x->x_ob, gensym("list")); x->x_outlet1 = outlet_new(&x->x_ob, gensym("float")); return (void *)x; } /** * setup */ void wget_setup(void) { curl_global_init(CURL_GLOBAL_NOTHING); wget_class = class_new(gensym("wget"), (t_newmethod) wget_new, 0, sizeof(t_wget), 0, A_GIMME, 0); class_addmethod(wget_class, (t_method)wget_request, gensym("request"), A_GIMME, 0); post("----------------------------------------------------"); post(" [wget] %s (c) GPL Copyleft 2006 Alexandre Quessy", PDWGET_VERSION); post(" Simple HTTP requests for Pure Data."); post("----------------------------------------------------"); } /** * Callback implementation */ size_t wget_callBack(void *ptr, size_t size, size_t nmemb, void *x) { size_t totalSize = nmemb * size; char *dest = malloc(totalSize + 1); //(sizeof(char)) strcpy(dest, (char *) ptr); post("[wget] : Getting data."); dest[totalSize] = '\0'; post("result :"); post("==============================="); post("%s", dest); post("==============================="); //outlet_symbol(((t_wget *)x)->x_outlet0, gensym(dest)); //free(dest); return(totalSize); }

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object name in GOP abstraction
by Federico 10 Jul '06

10 Jul '06

hello list(s), I have a problem: must create a small graph-on-parent abstraction. but I can't keep it small, because the object name and it's creation arguments enlarge the effective graph size. so if I set 20x20px as GOP size, but the object instance is: [myobj $0 foo bar 0 0 0 1] the instantiated object is too wide. is it possible to hide the object name (for GOP abstractions) or force it to not overflow dimensions set in canvas properties? (i write CC to the developer list, because i think if this is not possible, would be nice at least discuss about it... my little C programming skills don't help me in looking at the code and submitting an appropriate patch, but i think it won't get too difficult to change this... just want to see if other people experienced similar problems) bye -- Federico

4 3

displaying when an arg has been overridden
by Hans-Christoph Steiner 06 Jul '06

06 Jul '06

I just ran into a bug which I quite common in Pd, and thought of a simple, graphical way to show status which would make such bugs trivial to spot. Basically, I had a [+ 17] which I had mistakenly input data on the right inlet. I then was debugging the logic since I thought the [+ 17] was adding 17. So I was thinking that whenever an argument is overridden by data on an inlet, the argument should change color to clearly display that that argument is no longer in effect. Right now Pd is very black-and-white, and I support not adding extraneous colors. But I think that we should be using color to show things, and this is a simple example where I think it makes sense. .hc ------------------------------------------------------------------------ If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of everyone, and the receiver cannot dispossess himself of it. - Thomas Jefferson

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externals for Mac/Intel
by Thomas Grill 30 Jun '06

30 Jun '06

Hi Miller, browsing your s_loader.c code i realized there's a separate case called .pd_imac, which seems to be .pd_darwin for Mac/Intel. I don't think this is necessary (and i find it rather confusing), as separate build architectures are correctly recognized by the OSX loader routines. I just made a xsample universal build external which loaded just ok. To combine binaries you would use lipo, as in lipo -create i386/xsample.pd_darwin ppc/xsample.pd_darwin -o ub/ xsample.pd_darwin greetings, Thomas

2 1

[ pure-data-Patches-1413364 ] fix name clash - specialize PD's portaudio function names
by SourceForge.net 30 Jun '06

30 Jun '06

Patches item #1413364, was opened at 2006-01-24 01:28 Message generated for change (Settings changed) made by xovo You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478072&aid=1413364&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: puredata-dev Group: bugfix Status: Open Resolution: None Priority: 5 Submitted By: Thomas Grill (xovo) >Assigned to: Miller Puckette (millerpuckette) Summary: fix name clash - specialize PD's portaudio function names Initial Comment: Hi all, when compiling the latest Portaudio V19 source some name clashes arise between some PD portaudio-related functions (pablio/ringbuffer stuff) and portaudio itself (which now internally uses a ringbuffer as well). To get around that issue it seems to be cleanest to rename the respective PD functions. This is what the attached patch does. It is relative to pd-devel, but should be somehow usable for main pd too. best greetings, Thomas ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478072&aid=1413364&group_…

1 0

[ pure-data-Patches-1515177 ] pd crashes on loading bogus patcher file
by SourceForge.net 30 Jun '06

30 Jun '06

Patches item #1515177, was opened at 2006-06-30 14:59 Message generated for change (Settings changed) made by xovo You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478072&aid=1515177&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: puredata Group: bugfix Status: Open Resolution: None Priority: 5 Submitted By: Thomas Grill (xovo) >Assigned to: Miller Puckette (millerpuckette) Summary: pd crashes on loading bogus patcher file Initial Comment: this is a small patch avoiding a crash on loading something like <<<<<<< .mine #N canvas 735 22 869 1052 10; #X obj 92 438 s pd; ... ... etc. this only cures the symptoms - there should probably be a more refined way of checking patcher file integrity.... ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478072&aid=1515177&group_…

1 0

[ pure-data-Patches-1515177 ] pd crashes on loading bogus patcher file
by SourceForge.net 30 Jun '06

30 Jun '06

Patches item #1515177, was opened at 2006-06-30 14:59 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478072&aid=1515177&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: puredata Group: bugfix Status: Open Resolution: None Priority: 5 Submitted By: Thomas Grill (xovo) Assigned to: Nobody/Anonymous (nobody) Summary: pd crashes on loading bogus patcher file Initial Comment: this is a small patch avoiding a crash on loading something like <<<<<<< .mine #N canvas 735 22 869 1052 10; #X obj 92 438 s pd; ... ... etc. this only cures the symptoms - there should probably be a more refined way of checking patcher file integrity.... ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478072&aid=1515177&group_…

1 0

pd/src/obj files in devel?
by james tittle 30 Jun '06

30 Jun '06

...I just noticed that my pd-devel pd/obj file is over 75MB's: it's full of directories named 0 to F, each containing at least 100 files named with seeming random strings of letters and numbers, and the files go back at least a year... ...where/why are these being generated (scons?), and how can I get rid of 'em? I doubt I need that much object coverage... thanx, jamie

4 3

using ugen_getsortno() in an external
by Hans-Christoph Steiner 28 Jun '06

28 Jun '06

So it sounds like ugen_getsortno() is what I need for my idea to have the first executed instance of an [hid] get the data from the OS while the rest just output from an array. But ugen_getsortno() is only declared in d_delay.c. Are there any externals that have used ugen_getsortno() before? Is there any change of this becoming an external function, even in the alpha s_stuff.h sense? .hc ------------------------------------------------------------------------ The arc of history bends towards justice. - Dr. Martin Luther King, Jr.

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Pd-dev June 2006