Pd-list December 2008

pd-list@lists.iem.at

112 participants
182 discussions

so when does pd get rounded corners?
by Dan Wilcox 10 Dec '08

10 Dec '08

So when does pd get rounded corners ala Max 5? I want to squint at anti-aliased fonts too. --- Dan Wilcox danomatika.com robotcowboy.com

6 8

reading the textlist of the patch I'm in...
by Ed Kelly 09 Dec '08

09 Dec '08

Hi chaps, I've come up against something I can't solve without a deeper understanding of pd's internal structure, I wonder if anyone can help. I'm trying to build patches that know about each instance of themselves when called as an abstraction, without the specification of creation arguments to identify multiple instances of the same patch. Basically I want to read the list of the ultimate parent from memory, like you would if you read the pd patch into a text editor such as emacs. I often edit patches in such an editor,and I find it allows access to information about the patch in a sequential form that is hard to get in PD (how many obj(ects) there are and in what order, what they are etc.) and now I am trying to build patches that extend themselves in realtime, I need to be able to read the patch I'm in. If there are any PD builtin functions or symbols I can use to do this, I'd love to find out what they are! I may be missing something obvious, but an enclosed example might help. Of course this doesn't work - [s sinclick] and [cup] don't work because by the time you get to use them, they have all [loadbang] ed. But, how does one object know it is the first, the 2nd etc? And how do they send the number to the next instance? Well, another question imminent. This will unlock a big can of good worms for me! #ed Check out the brand new EP by Lone Shark: "Synchromatic" at http://www.pyramidtransmissions.com/store. Available through iTunes from December 8th

4 3

question regarding a compile warning
by Ivica Ico Bukvic 09 Dec '08

09 Dec '08

Hi all, I have been encountering now regularly following warning during compile time of various externals: ld: warning: cannot find entry symbol xport_dynamic; defaulting to 0000000000002210 (not sure if this is always the same number) When I manually convert -export_dynamic in makefile to --export_dynamic, the error goes away on all objects so far except for the wiimote external which reports: ld: unrecognized option '--export_dynamic' The interesting thing is that objects compiled one way or the other still appear to work. The objects are being compiled against the pd-extended 0.40.3 source on Intrepid (Ubuntu 8.10). Any ideas? Ico

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[PD-announce] chdh live in Paris
by cyrille henry 08 Dec '08

08 Dec '08

Hello, For the end of my exhibition, chdh will perform live in Paris : chdh :: ars longa wednesday 10 dec :: 20h free 67 avenue parmentier :: paris 11 http://www.chdh.net http://www.arslonga.info Hope to see you there Cyrille and Nicolas _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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still not understanding "local" sssad in abstractions using variables
by Joe Newlin 08 Dec '08

08 Dec '08

Hi, I've looked at the sssad examples and searched the list (including a discussion this week on the topic) and I still have questions about using sssad to save settings of GUI objects in a particular abstraction or subpatch while ignoring sssad objects used in other subpatches or abstractions within the parent patch. I've looked through the sssad abstractions to try to figure out how arguments are passed along, and just kind of got lost without understanding what was doing what. I've found the sssad implementation in McCormick's s-abstractions to be extremely useful, and I'd like to make a couple of tweaks to it so it will work for this specific purpose. I'll try to be specific with my questions: 1. do I need to add an argument or $0 variable to the sssad instance within the abstraction that gets the special sssad treatment? 2. do i need to add arguments or variables to any of the sssad or SSSAD objects, sends & receives & such, within the sssad patches? I hope this makes sense. Joe

2 8

how to optimize system for pd performance?
by Roman Haefeli 08 Dec '08

08 Dec '08

hi all i encountered, that 'ondemand' cpu scaling doesn't work correctly when running pd with realtime priority. even if pd is using 80% or more resources (of one core), the cpu frequency is not raised and staying at 800MHz. i can force it to go up by running an instance of 'burnMMX' (or something else, that burns as many cycles as possible). when running pd with '-nrt', automatic scaling works fine. also, as a workaround, i can set the scaling_governor to 'userspace' and then set the cpu frequency manually. could it be, that when pd is running in realtime mode, its priority is higher then the one of the process, that controls the cpu frequency, so that cpu time is assigned rather to pd and only at times, when pd is not using it, the governor can adjust the frequency (which would be the loweset, since pd is not using much cpu at that time)? i wonder, what other people do in a performative situation? do you simply turn automatic scaling off and set frequency to the highest value? or is it only me having this issue? while we are at priorities: i figured out, that all four combinatios are possible: pd -rt, jackd -R pd -nrt, jackd -R pd -rt, jackd pd -nrt, jackd i guess, that the first one should be used for best performance, right? but how to set priorities between jackd and pd? can this be fine-tuned at all (i know you can fine-tune jackd) ? if so, which should have higher priority? roman ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de

5 9

getting mousedown/mouseup
by Hans-Christoph Steiner 07 Dec '08

07 Dec '08

Anyone know a way to get mousedown and mouseup events for a specific spot in a Pd patch? Basically, I want to be able to press a button and hold it at 1, then release it and get 0. .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

4 7

Re: [PD] iem vcf crashes feedback loop
by Ed Kelly 07 Dec '08

07 Dec '08

> seems to be the combo of the iem filters with the [block~ 1] > do you really need that small blocksize? Yes, because if you set the delay by pitch as well as by time. But you're right - [block~ 4] works fine up to MIDI 112 (5274Hz - easily high enough for most people). I think it needed a power of 2 before it would work. Thanks, Ed

4 4

Video stream player / giss
by Nicolas Montgermont 07 Dec '08

07 Dec '08

Hi list, I was searching a video stream player in pd, ogg theora format for example, but can't find any... Is there an object/ solution I have miss? and btw, is giss still accepting new mount point? I've tried twice last days and haven't receive the confirmation mail. thx in advance, nicolas -- http://nim.on.free.fr

6 14

[list-quicksort]
by Matt Barber 07 Dec '08

07 Dec '08

Hello, Attached is a [list-quicksort] abstraction, which sorts lists of numbers using (you guessed it!) a quicksort algorithm... it should function as a drop-in replacement for the recent [list-*sort] abstractions, and it should be quite a bit faster than [list-sort], and faster than [list-shellsort] for lists of maybe 50 or more. It will not perform as well as [list-shellsort] for lists that have a ton of duplicates, and it uses more memory than the shellsort. I believe there are faster sorting algorithms which begin with quicksort and then move to another kind of sort for short partitions or if the partitioning gets too deep, but I wanted to do a pure quicksort for simplicity. Anything significantly faster would probably need an external, but like I said before I love this kind of thing just for the constrained problem solving, and for the pedagogical value for anyone who uses list-abs. I don't think we "need" a heapsort or anything else, but I'd be happy to put one together in a couple of weeks. There were a few persistent bugs in this one that I think I've ironed out, but I'd like to have one or two people try to break it. =o) Thanks, Matt

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Pd-list December 2008