Pd-list February 2013

pd-list@lists.iem.at

106 participants
200 discussions

fixing pow~
by Jonathan Wilkes 19 Feb '13

19 Feb '13

Hi list, A question: * are pow~ and exp~ common enough objects to warrant adding the perf8 optimized dsp function? -Jonathan

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gem segfault when opening video
by Charles Goyard 19 Feb '13

19 Feb '13

Hi, when opening a .mov file on pd-extended on linux, I get : verbose(5): gmerlin support verbose(5): quicktime4linux support [pix_film]: opening /home/charles/w/enversdudehors/endo/fev2013-2.mov with format 1908 [pix_film:track] No video decoder found for fourcc avc1 (0x61766331) track 0 does not contain a video-stream: skipping Pixelformat not specified for video frame verbose(5): gmerlin: succeeded [pix_film]: loaded file: /home/charles/w/enversdudehors/endo/fev2013-2.mov with 211432 frames (576x576) at 60.000000 fps Segmentation fault (core dumped) On the command line, gmerlin fails to open the file as well, with the same message, but lqtplay is able to play the movie. However, it seems these messages are contradictory : [pix_film:track] No video decoder found for fourcc avc1 (0x61766331) verbose(5): gmerlin: succeeded I'm not sure it's a bug. Maybe there's a way to force pix_film to use a specific backend ? According to ffmpeg, the stream is : Video: h264 (Main) (avc1 / 0x31637661), yuv420p Thanks, -- Charles

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Multi-channel sound from pd on raspberry pi: can someone confirm?
by Alexander Wilson 19 Feb '13

19 Feb '13

Hello. I'm trying to find a straight answer to this question in the forums. Is anyone using pd on Rpi with more than two channels of audio output? and is it sounding ok? I have tried with a cmedia cm6202 6 channel (5.1) but can only get it to work adequately if I deactivate output multiple audio channels (more than 2). I need at least 6 channels and preferably 8. Has anyone tried to plug in several cheap stereo usb interfaces onto the Rpi through a hub, and setting the different interfaces as multi outs in audio settings, in order to multiply the outputs? Does this work? I would also like to know if anyone has tried an hdmi decoder with more than 2 channels from pd, and whether this actually works. I'm confused about how multichannel sound is handled in hdmi, but would live to know if there is a possibility of outputing 8 channels of analog audio if, say, one of these hdmi decoders were plugged onto the rpi: http://www.allaboutadapters.com/hddodtsdihdo.html If nothing else works, I'm considering just buying 3 more raspberry pis, and linking them somehow... I just want to make sure I'm not missing something, before I spend money on these. Many thanks....

2 1

GUI abstraction issues
by Esteban Viveros 19 Feb '13

19 Feb '13

Hi list, I'm initiating to do gui abstractions, and I have two issues in pd-extended. First: When I use the inlet object, can I name it? This is because I would like to have the name inlet in "Autotips" mode. This in pd-extended and l2ork. Second: In pd-extended .43.4, when I try to use a canvas with graph on parents, I can't see the inlets and outlets.. Is as if graph on parents is below of the canvas object, I'm sending an objects to explain better this issue. Thanks.. -- Esteban Viveros (27) 8815 7170 (27) 3066 0359 (11) 95761 4125 (11) 2738 7868 www.bandpage.com/estebanviveros <http://soundcloud.com/estebanviveros> https://www.facebook.com/estebanviveros.art http://www.papodecompositor-es.blogspot.com.br/ http://expurgacao.art.br/

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[PD-announce] Workshop: WebPd for online “jamming” applications at NMF 2013
by Holger 19 Feb '13

19 Feb '13

The second Network Music Festival will take place in Birmingham (UK) on 22-24 February 2013. Sébastien Piquemal will hold a WebPd workshop as part of the festival. //////////////////// More about the workshop: WebPd for online “jamming” applications. Saturday 23rd February 11am-1pm & Sunday 24th February 10am-12.30pm Level: beginner-intermediate WebPd is an open-source library written in JavaScript, allowing to run Pure Data patches on the web. In this workshop, we will program an online jamming application with JavaScript and WebPd. This application will consist in a simple web page, where every user can “jam” with other online users with mouse clicks, key presses or moving objects – all in sound. Each attendee will make his own application. A workflow will be proposed : firstly designing the interaction and the jamming system, secondly prototyping the sound in Pure Data, and finally writing the JavaScript code and integrating the sound to the web page. At the end of the day, we will gather, try everybody’s jamming app and make some noise. Attendees will first receive a quick introduction to Pure Data and to JavaScript. They will learn how to get started with both technologies, write a simple web page with a dash of JavaScript and make a simple Pure Data patch. Then, they will learn how to use WebPd to sonify a web page. Everybody is welcome. People with no previous knowledge in the technologies will focus on learning, people with JavaScript and/or Pure Data knowledge will be able to explore deeper the possibilities of WebPd of making web pages sound better. Sébastien Piquemal, born in France in 1986, is a computer engineer, musician and sound designer based in Helsinki. He has been working as a web developer at Futurice Ltd. since 2010, mostly developing Futurice’s internal services and IT infrastructure. Sébastien is also studying sound design in Helsinki Media Lab, and on his free-time, developing open-source projects such as WebPd – a Javascript library for running Pure Data patches on the web. http://networkmusicfestival.org/programme-2/workshops/#webpd //////////////////// All workshops will take place at The Edge, 79-81 Cheapside, Deritend, Birmingham, B12 0QH The workshop is free to attend for NMF2013 ticket holders but spaces are limited so please sign up in advance by emailing networkmusicfestival(a)gmail.com or ask at the information desk at the festival. //////////////////// Network Music Festival presents a weekend of hi-tech musical performances, installations and workshops that presents new musical forms and ideas where networking is central to the aesthetics, creation or performance practice of the work. More about the festival: http://networkmusicfestival.org/ _______________________________________________ Pd-announce mailing list Pd-announce(a)iem.at http://lists.puredata.info/listinfo/pd-announce

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some vanilla objects disappeared!
by Raphael Raccuia 19 Feb '13

19 Feb '13

Hi, I use 0.43.4, which is installed on twoUbuntu12.04,from repositories, and I've just noticed some basic objects like [expr] and [cnv] 'couldn't create' on onesystem, but not on the other...?!?

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Raspberry Pi : I²S audio codec ?
by Pierre Massat 19 Feb '13

19 Feb '13

Hi, I just found this : http://www.openmusiclabs.com/projects/codec-shield/ Apparently the latest revision of the Pi has GPIO pins specifically for I²S (http://www.raspberrypi.org/archives/1929 , see Additional I/O expansion). Though i can't find anything on the web right now, it should be possible to connect this codec to the Pi, what do you think ? I m very excited but i reckon I have a lot to learn... Cheers, Pierre.

2 1

sdl on RPI (was pdp on RPI (was RPi - GEM openGL))
by me.grimm 18 Feb '13

18 Feb '13

pdp_sdl gives me a window. no image in the window though. not sure if its hardware GPU accelerated or all though CPU. https://www.dropbox.com/s/wdnuivvlbrn1jd5/rpi-pdp_sdl-screenshot.png m On Sun, Feb 17, 2013 at 6:39 PM, olm-e <ol(a)ogeem.be> wrote: > hello, > > to my knowledge, and following what I already tried, the xvideo > extention is not usable due to the restrictions on the gpu chip, > and even gstreamer is not capable of using it : > > result of collective efforts and experiments during the last puredata > patching circle in Brussels : > > http://variable.constantvzw.org/define/index.php/PiEye > > if anyone can leverage this it will be good... (but I don't have too > much hope) > > Olm-e > http://ogeem.be > http://patchingcircles.be > >> >> ------------------------------ >> >> Date: Sun, 17 Feb 2013 14:47:51 -0500 >> From: "me.grimm" <megrimm(a)gmail.com> >> Subject: Re: [PD] pdp on RPI (was RPi - GEM openGL) >> To: Simon Wise <simonzwise(a)gmail.com> >> Cc: "pd-list(a)iem.at" <pd-list(a)iem.at> >> Message-ID: >> <CACE5Q1637Szqx8cPhLYd4-AgeetxJs-Zie1DsCy4VXnqgDN3Pg(a)mail.gmail.com> >> Content-Type: text/plain; charset=ISO-8859-1 >> >> ok i just went with the apt-get install pd-pdp >> >> so when i do this: >> >> $ xvinfo >> >> i get extention "xvideo" missing and no xvideo extention on :0 >> >> $ xdpyinfo >> >> yeilds no module such as xv anything. >> >> can someone confirm that xv even exists as a working extention on rpi? >> maybe i have to load v4l manually? >> not sure how to do that >> >> m >> >> On Sun, Feb 17, 2013 at 10:50 AM, Simon Wise <simonzwise(a)gmail.com> wrote: >>> On 17/02/13 23:33, me.grimm wrote: >>>> That's what I was assuming. How to build just pdp.pd_linux minus the >>>> pdp_opengl.pd_linux is the question >>>> >>>> I'll try later this afternoon if I get the chance >>> >>> does the raspbian package fail on raspbian?? I guess it must build, it has >>> been built in the main debian repos for both armhf and armel for quite a >>> long time. >>> >>> It does have the pdp-opengl binary, and it does depend on gsl etc so they >>> must be there even if not working. >>> >>> http://archive.raspbian.org/raspbian/pool/main/p/pdp/ >>> >>> >>> Simon >> >> > > > _______________________________________________ > Pd-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list -- ____________________ m.e.grimm | m.f.a | ed.m. megrimm(a)gmail.com _________________________________

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Question on PD with csoundapi~
by Mike McGonagle 18 Feb '13

18 Feb '13

I'm wondering if anyone can direct me to some documentation on using csoundapi~? are the options for the external the same as the commandline version of csound? I have a copy of the external and the example with it, but the csd file it references are not there and I get several errors when loading the example. Thanks, Mike

1 0

IEM lib in Debian ?
by Pierre Massat 18 Feb '13

18 Feb '13

Dear List, I need a filter in the iemlib included in pd-extended. I'm using vanilla on Rasbian, and pd-iemlib doesn't seem to exist in the repos. Iemnet, iemmatrix and iemambi seem to exist, but not iemlib. Anybody knows how i could install this library ? On the IEM website there a list of downloads but the most recent one requires the sources of Pd 0.39 ... Cheers, Pierre.

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Pd-list February 2013