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33278 discussions

issues trying to use libpd_process_float()
by Eric Lennartson 05 Jun '23

05 Jun '23

Hello all, I have been experimenting with using python and libpd, and for the most part it works well. However, I have been trying to use the other processing methods such as libpd_process_float() or libpd_process_double(), but when I do I just get crazy noise. The code I'm working with is just a modified version of the echo.py file in the samples section of the libpd github page. Basically, all I have done is change the pyaudio format to paFloat32, created a dummy buffer to pass to the process method with array.array('f', range(libpd_blocksize()) and called libpd_process_float() instead. I did check to see if the format was supported using pyaudio's is_format_supported() method and it returned True. The pd patch itself is just a quite sine tone straight into the dac. So I'm really scratching my head here, what am I missing? Thanks for any insight you can provide. Eric

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example needed: rfft~ into magnitudes AND phases AND back
by Peter P. 03 Jun '23

03 Jun '23

Hi list, trying to work on phase angles of spectra I am looking for an easy example with actual Pd objects how to convert a [rfft~] output from real and imaginary to magnitudes and phases, eventually unwrap phases if required, and then convert magnitudes and phases back to a cartesian for [rifft~]. I know about the Dudas/Lippe pvoc tutorials for MaxMSP but can not find much in Pd's documentation. Perhaps I am missing something? Thanks for any pointers! best, Peter

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update on Gem for Apple Silicon?
by John Harrison 03 Jun '23

03 Jun '23

We're approaching 3 years now since Apple released the M1 and there's no Gem available for distribution on Apple Silicon that I'm aware of. I'm not finding a lot of conversation about it on this list and when searching in the Gem-dev list I found nothing. I tried compiling Gem for Apple Silicon myself and to my surprise it compiled and ran. There are some issues though. I didn't test thoroughly but quickly playing with some examples I saw artifacts when playing videos and general choppiness. Is Gem for Apple Silicon on anybody's radar? I'm up for being part of a team to get Gem on Apple Silicon if there's interest. -- John https://johnharrison.cc

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Help with Gem on Fedora
by Francisco Medeiros 01 Jun '23

01 Jun '23

I need to play vídeo files with Gem on Nobara linux which is Fedora based but when compiling Gem I can only get film-support to use QuickTime. Does anyone know a way to install gmerin on Fedora? or What kind of video codecs work well with quicktime4linux? It complains about a bad magic number no matter what kind of file I try to open. Thanks, F. Medeiros

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drawing poles and zeros (z-plane) in Gem?
by Peter P. 01 Jun '23

01 Jun '23

Hi has anyone already done a visualization of a z-plane with poles and zeros in Gem? cheersz, P

1 0

[text sequence] and rescheduling of updated buffers
by Peter P. 01 Jun '23

01 Jun '23

Hi list, I am using [text sequence] with wait times to generate timed events. The contents of my list buffer look something like 0 event1; 1000 event2; 1000 event3; When I insert a line into the buffer using [text insert 2] 1400 msecs after starting the sequencer, the text buffer looks like 0 event1; 1000 event2; 500 event2.5; 1000 event3; event2.5 will be output correctly, but event3 still fires 1000msecs after event2. I include a minimum working example. Since I would like to use this as a looping text sequencer, adding and deleting events while it is running, I am wondering what exactly happens behind the scenes when adding or deleting lines, and how I can achieve predictable behavior. At which times is [text sequence] reading in the buffer and (re)scheduling events? Thanks for any help, Peter

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Linux/Manjaro: use system file manager insteado of tcl/tk one?
by padovani 31 May '23

31 May '23

Hi, is it possible to change the behaviour of PD to use the system file manager (Dolphin [https://pasteboard.co/3M8II8KNYusE.png] or Nautilus [ https://pasteboard.co/I4iBUqqcBAXH.png]) when opening / saving patches and other files instead of the painfull tk ( https://pasteboard.co/0YVTUU6uUV44.png) one? Have recently switched from mac and this specific PD idiosyncrasy is taking me much more time to patch. Thanks in advance!

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Re: [PD] vbap for mac binary?
by Dan Wilcox 30 May '23

30 May '23

> * Dan Wilcox <danomatika(a)gmail.com <mailto:danomatika@gmail.com>> [2023-05-27 23:51]: >> >>> On May 26, 2023, at 11:28 PM, pd-list-request(a)lists.iem.at <mailto:pd-list-request@lists.iem.at> wrote: >>> * Dan Wilcox <danomatika(a)gmail.com <mailto:danomatika@gmail.com> <mailto:danomatika@gmail.com>> [2023-05-26 21:03]: >>>> It has been updated for pd-lib-builder and is very easy to compile from source: > Thanks again! If someone compiles vbap the way you described, which Mac > architectures will then be able to load the external? > > best, Peter The compiler, by default, builds for the native architecture of the build machine. If you need a multi-arch build, specify the archs on the command line using the "arch" pd-lib-builder Makefile variable: make arch="x86_64 arm64" Confirm the compiled archs via file: file vbap.pd_darwin which should spit out the compiled archs found. On my system I get: % file vbap.pd_darwin vbap.pd_darwin: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit bundle x86_64] [arm64:Mach-O 64-bit bundle arm64] vbap.pd_darwin (for architecture x86_64): Mach-O 64-bit bundle x86_64 vbap.pd_darwin (for architecture arm64): Mach-O 64-bit bundle arm64 You can zip the folder and send it someone else, however a Getkeeper check will be triggered since the dynamic libs are not signed or notarized. It should mean the person running Pd will be asked if they will allow to load the lib. If I remember correctly, if you allow once, then it will run ok afterwards. Note: the available architectures depend on which macOS version & command line tools/Xcode combination the build system has. Any newer macOS 10.15+ will support both x86_64 (Intel 64-bit) and arm64 (Apple Silicon). Also, the build system does *not* need the full Xcode installed to build a simple C + Makefile project. The command line tools installed via "Xcode-select --install" will suffice. I should probably add the above info the pd-lib-builder tips & tricks markdown... -------- Dan Wilcox @danomatika <http://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>

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Re: [PD] vbap for mac binary?
by Dan Wilcox 29 May '23

29 May '23

> On May 26, 2023, at 11:28 PM, pd-list-request(a)lists.iem.at wrote: > * Dan Wilcox <danomatika(a)gmail.com <mailto:danomatika@gmail.com>> [2023-05-26 21:03]: >> It has been updated for pd-lib-builder and is very easy to compile from source: >> >> https://github.com/pd-externals/vbap > Thanks Dan, me for my part I don't have a mac computer, but am trying to > help someone else (who doesn't know how to compile). 0. Install Pd (assume this is already done) 1. Open Terminal.app 2. Install command line tools (git, basic build system, etc): xcode-select --install 3. Navigate to the Pd Documents dir: cd ~/Documents/Pd/externals 3. Clone vbap and navigate inside: https://github.com/pd-externals/vbap.git cd vbap 4. Build vbap: make 5. Test: open ~/Documents/Pd/externals/vbap in Finder and open vbap-help.pd > What would be > needed to package such a binary for deken then? > best, P I don't actually know as I've not actually created a deken package myself. I assume zipping up the built folder to a deken-compatible format. Other people on this list know but... there is actually a README: https://github.com/pure-data/deken/blob/main/developer/README.md -------- Dan Wilcox @danomatika <http://twitter.com/danomatika> danomatika.com <http://danomatika.com/> robotcowboy.com <http://robotcowboy.com/>

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updated hid object?
by Ingo 27 May '23

27 May '23

Hi there, I'm having trouble with using my mouse with the relatively old [hid] (from 2004) on my Debian with Pd 0.49.0. The main problem is that "open by device type" is not working and I have to search the device number each time. I have some automated method for searching but it still takes up too much time when restarting frequently. Once I have the device number it works very well well, though! (I need 6-8 different mouse buttons . . . ) I remember seeing something a while ago about either a new or updated alternative [hid] object. However, I'm not sure what it was and I don't remember if this was even for Linux at all. Making a quick search didn't give me any results. Can anyone enlighten me if there is something working more reliably with finding the mouse without havin to search manually each time? Thanks Ingo

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