Pd-dev May 2006

pd-dev@lists.iem.at

35 participants
63 discussions

pollfns for [hid]?
by Hans-Christoph Steiner 29 May '06

29 May '06

I am thinking that it would be nice to have [hid] callback based to reduce latency (or so that you don't have to poll at 1ms to get low latency). Could I use the pollfn stuff for this? On GNU/Linux, the input data comes from a file device, so it seems that a pollfn is meant to do that. But I recall from my [linuxmouse] object that it only updated when there was pd<->gui network traffic. .hc ________________________________________________________________________ ____ "Looking at things from a more basic level, you can come up with a more direct solution... It may sound small in theory, but it in practice, it can change entire economies." - Amy Smith

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Re: [PD-dev] debugging pd with gdb or ddd
by Georg Holzmann 29 May '06

29 May '06

Hallo! > How do you get gdb to find the sources for externals? It seems to find > the Pd source fine, but not the source the objects I am working on. hm ... you are right, break file:nr also doesn't work for me ... I just read somewhere that maybe you can set "break main" and then when the program stops set the breakpoints for the libraries ... but I don't know ... > What platform are you on? I am on Mac OS X. debian on a pc LG Georg -- Bis zu 70% Ihrer Onlinekosten sparen: GMX SmartSurfer! Kostenlos downloaden: http://www.gmx.net/de/go/smartsurfer

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hid crashing (again...) +fixes
by IOhannes m zmoelnig 27 May '06

27 May '06

hi using hid i had problems with my joystick, crashing immediately as soon as i used the throttle. the reason turned out to be a fixed-sized character array which was limited to 7(!) characters and strcpy'ing names without any checks. unfortunately my "abs_throttle" is a bit longer than 7 characters. now i am wondering why all the event-name handling is done via character-arrays and not with pd symbols? pollution of the symbol-table can not be the problem, since what is going on is something like that: 1. (hid_linux): get the name (*char) 2. (hid_linux): copy it to to event_name (char[7]) 3. (hid_linux): pass &event_name to hid::hid_output_event() 4. (hid): gensym(event_name) and output it i don't see any good reason to not generate the t_symbol's much earlier in the process, in order to allow names of any length (and let pd handle the allocation): 1. (hid_linux); get the name (char*) and gensym() it 2. (hid_linux): pass the symbol to hid::hid_output_event() 3. (hid): output the symbol i have committed several changes to the CVS, but since i didn't want to break the API where i cannot test (osX), i have only changed hid_linux.c; this complicates the code a bit to: 1. (hid_linux); get the name (char*) and gensym() it 2. (hid_linux): pass the char* in the symbol (s->s_name) to hid::hid_output_event() 3. (hid): gensym() it again and output this involves 2 symhashtable lookups instead of just one. so the question is: is this by (bad) design? any objections to change (in hid.[ch]) void hid_output_event(t_hid *x, char *type, char *code, t_float value); to void hid_output_event(t_hid *x, t_symbol*type, t_symbol*code, t_float value); ?? mfga.sdr. IOhannes PS: i also did some other (small) changes, in order to make it possible to compile this object without having 80MB of code checked out

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Re: [PD-dev] debugging pd with gdb or ddd
by Georg Holzmann 27 May '06

27 May '06

Hallo! >> hm ... you could try: >> >> break function(types) >> >> think this should work ... > > So luck there. This didn't work: Don't know why, but for me this works ... (also "break function" without arguments - I just have tried it ...) But I read somewhere that there can be problems with shared libraries and you can also set breakpoints with "break Main.cpp:47" (file:linenr) LG Georg -- Bis zu 70% Ihrer Onlinekosten sparen: GMX SmartSurfer! Kostenlos downloaden: http://www.gmx.net/de/go/smartsurfer

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Re: [PD-dev] debugging pd with gdb or ddd
by Georg Holzmann 27 May '06

27 May '06

Hallo! > Ok, that's a start, I've gotten that far before. I want to be able to > set breakpoints in the functions of my object. But when I do this: > > (gdb) break hid_free > Function "hid_free" not defined. hm ... you could try: break function(types) think this should work ... LG Georg -- Bis zu 70% Ihrer Onlinekosten sparen: GMX SmartSurfer! Kostenlos downloaden: http://www.gmx.net/de/go/smartsurfer

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debugging pd with gdb or ddd
by Hans-Christoph Steiner 26 May '06

26 May '06

This question has been asked in the past, but not really answered, at least as far as I can find. Can anyone give a brief HOWTO for using ddd or gdb with Pd? .hc ________________________________________________________________________ ____ If you are not part of the solution, you are part of the problem. - Eldridge Cleaver

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when to add "x_" to your object's struct elements
by Hans-Christoph Steiner 25 May '06

25 May '06

I was wondering if there is any kind of logic for when a struct element should start with x_ and when it shouldn't. Here's the struct from a new object I am working on: typedef struct _usbhid { t_object x_obj; /* usbhid types */ HIDInterface *x_hidinterface; u_int8_t x_iSerialNumber; hid_return x_hid_return; /* internal state */ unsigned int debug_level; // control debug messages to the console t_int x_device_number; t_int x_read_element_count; t_int *x_read_elements; t_int x_write_element_count; t_int *x_write_elements; t_int report_size; // size in bytes of the HID report /* output */ t_atom *output; // holder for a list of atoms to be outputted t_int output_count; // number of atoms in in x->output t_outlet *x_data_outlet; t_outlet *x_status_outlet; } t_usbhid; Which elements should start with "x_" and which shouldn't? .hc ________________________________________________________________________ ____ "Terrorism is not an enemy. It cannot be defeated. It's a tactic. It's about as sensible to say we declare war on night attacks and expect we're going to win that war. We're not going to win the war on terrorism." - retired U.S. Army general, William Odom

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configure.in changes for PortAudio on Intel Macs
by chris clepper 24 May '06

24 May '06

The configure.in for Miller's 0.39-2 (and CVS) makes the assumption that Darwin is always big endian and defines -DPA_BIG_ENDIAN. I manually changed the resulting makefile to the little endian flag for Pd to work. Also, I used the version of Tcl/Tk that comes with OSX which is in /System/Library/Frameworks/ so I changed that in the makefile as well. cgc

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[ pure-data-Bugs-1494449 ] configure script change for intel Mac
by SourceForge.net 24 May '06

24 May '06

Bugs item #1494449, was opened at 2006-05-24 17:03 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478070&aid=1494449&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: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: christopher clepper (cclepper) Assigned to: Nobody/Anonymous (nobody) Summary: configure script change for intel Mac Initial Comment: Attached diff to detect for x86 or PowerPc based Macs ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478070&aid=1494449&group_…

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EDIROL UA-101. Am I helpless?
by Julian Villegas 24 May '06

24 May '06

Hi list, I've been trying to configure an Edirol UA-101 in WinXp to use it with Pd (0.38.4-extended-RC8), and although the sound is pretty neat, the latency is about 70ms (!!!) ... I wish I could use a hammerfall, but I'm afraid I can't, I have read some posts of other edirol cards, with similar problems but they were a little out date and I was wondering if anyone out there have been successfully configured it in Windows. Thanks in advance! Julian Villegas University of Aizu Synthetic Worlds Laboratory Aizu - Wakamatsu Fukushima Japan 965 - 8580 Me pregunto de un modo pensativo Que significa ser colombiano? No se le respondi. Es un acto de fe JLB. --------------------------------- Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.

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Pd-dev May 2006