Pd-dev July 2003

pd-dev@lists.iem.at

17 participants
15 discussions

Pdplay?
by Nicola Bernardini 21 Oct '04

21 Oct '04

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear all, at the SOb project (http://www.soundobject.org) we're writing some really cool physical model objects which we are soon going to package and propose to the pure-data externals repository (they are GNU/GPL). However, we now have a problem that we want to solve soon: we need standalone versions of some demo applications (possibly running griPD etc.) we did. It would be nice to have a sort of MaxPlay type of thing (how about PdPlay?). I have some ideas on how to do it and it could be trivial, and therefore it is very probable that someone has already done it somewhere. If no one has done it, I'll hack up one solution and report back to the list as soon as it is done (it is going to be GNU/GPL anyway :). Thank you in advance for all the help you will want to give. nicb +--------------------------------------------------------------------+ |Nicola Bernardini | |E-mail: nicb(a)centrotemporeale.it | |GPG Fingerprint = 6AE6 AF21 E160 D9B3 396E EBAC 906C CFAE 4D65 D910| |Neither MS-Word nor MS-PowerPoint attachments please: | |http://www.fsf.org/philosophy/no-word-attachments.html | +--------------------------------------------------------------------+ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.0 (GNU/Linux) Comment: Made with pgp4pine 1.75-6 iD8DBQE9mf2qkGzPrk1l2RARAqi/AJ92NXY9HoDWlMbRcu59RkUQNH8E7gCeLU07 +ocbGJWYRzzrrdQO/cG0BcM= =TT6i -----END PGP SIGNATURE-----

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Gem/MarkEx now in pd-externals
by Hans-Christoph Steiner 06 Aug '03

06 Aug '03

I just finished integrating the MarkEx objects from Gem into the pd-externals CVS. These are objects from GEM which don't have any dependencies besides libc and are generally useful. What I moved is the entire contents of Gem/src/MarkEx except [hsv2rsb] and the vector lib. [hsv2rsb] depends on some Gem functions. The vector lib could be included as well, but it would be non-trivial to make those objects into single files, so I left it. [abs~] is now in creb and [reson~] is now in cxc, so I didn't include those. Also, all of the objects have been separated into one file per object. You can find these in externals/markex. Hopefully they will be removed from Gem since they are now a part of the pure-data CVS. Also, this solves a few name conflicts: [average] with maxlib, [counter] with cxc and cyclone, and [change] with pd. I have renamed all of these using gem_ as a prefix, i.e. [gem_average] and included them. I compiled them under Linux and MacOS X, and will try to compile under Win2k later tonight. .hc

4 6

multi-channel audio codec sources for PD
by zack 31 Jul '03

31 Jul '03

I am looking for multi-channel audio encoder/decoders (e.g. AAC, A52, vorbis, AC3 etc.) suitable for implementation as a pd extern, or better yet, already implemented in pd and I just haven't heard about it. Would anyone have any leads on this? thanks -ZS

3 2

Flext and array allocation
by bbogart＠ryerson.ca 31 Jul '03

31 Jul '03

Hello all, I'm working on my first flext project. I'm slowly getting the hang on things (c++ in particular) I need to create an array with the number of elements specified by the creation arguments of the object. I also need this array to be available to all functions in the class. How to I create the array? Where do I define it? (in the constructor?) then how do I access it from another function? Any suggestions/examples would be appreciated. Thanks Ben (now that I'm in windows I realize it would have been nice to send the current code, now I can't)

3 2

defining a widget behavior (GUI externals)
by Thomas Grill 23 Jul '03

23 Jul '03

Hi all, flext (cvs version) now contains an attribute editor that can be accessed with the "properties" context menu function of any attribute-enabled flext-based external . However, i'm not really satisfied with the implementation... maybe someone can help me with that: Is there a portable way to e.g use only the "properties" or the "save" method of the widget behavior but leave the others as they are (for normal object box behavior)? Using these functions is a good thing for non-graphical objects also. Currently, there seem to be only two non-satisfying ways: 1) when the class setup function is called by PD the class widget-structure is already initialized with the functions for normal object behavior. Copy these to a new structure and modify only the needed ones (e.g. only the "save" method") (as implemented in flext now) This has the drawback that the class structure must be known, which implies the usage of m_imp.h instead of m_pd.h which is not available publicly in /usr/include for linux installations 2) Initialize the new widget behavior structure with the PD-internal widget methods along with one new "save" method. However, these internal PD methods are not exposed in m_pd.h but statically defined. To use them the API has to be changed. Am i missing something obvious? Are there other ways, or how can the situation be made better? thanks for any input, Thomas

4 5

[GEM] compiling gem cvs
by Thomas Grill 23 Jul '03

23 Jul '03

Hi GEM maintainers, i have had some trouble compiling GEM from cvs for Windows (with VC7): - i had to change all occurences of GL_BGRA or GL_BGR to GL_BGRA_EXT and GL_BGR_EXT, respectively (i hope that's exactly the same....) - in text2d.h the GLTTPixmapFont is defined in the class, but the header file "GLTTPixmapFont.h" is only included for linux and OSX. There doesn't seem to be a necessity for that. (and why is FTGL defined for other platforms but for Windows it is GLTT?) - the particle and pspray projects have absolute file positions which makes them practically unusable - in pspray.cpp, line 139 the pow function is neither float, nor double precision... it's necessary to make the constant 0.3333f - there's an interesting warning for glm.c, line 1485 that model->texcoords is of type GLfloat *, which can't easily be printed as an integer.... (should that be numtexcoords?) the most important problem is that some of the FT*.c of the GLTT 2.5.2 distribution don't seem to match to their corresponding FT*.h files. They also have different dates. Which GLTT version is typically used with GEM? many thanks, T

3 2

problem defining t_outlet array
by Brian Sheehan 18 Jul '03

18 Jul '03

Hi, I'm having problems trying to define an array of type t_outlet. here's the code: #include "m_pd.h" typedef struct _shapetape { t_object x_obj; t_clock *x_clock; double x_deltime; int x_hit; t_int points; t_outlet outlets[NUM_OUTLETS];//problem code double *x, *y, *z; t_atom *x_out, *y_out, *z_out; } t_shapetape; The compiler (gcc3 w/ Project Builder) gives this error: shapetape.c:17: field `outlets' has incomplete type I noticed in m_pd.h that t_outlet is #define'd to EXTERN_STRUCT _outlet; Does this mean to include some other header for the definition of _outlet? The only place I could find a definition was m_obj.c... thanks, Brian p.s. The external I'm developing is for reading data from a serial device called the Shapetape (http://www.measurand.com/products/shapetape.html), which I'll be using as the dynamic system to scan in a scanned synthesis (http://www.csounds.com/scanned/) instrument. If anyone has any advice on developing this sort of external, it would be much appreciated... this is my first ever pd (or max!) object. Also, if anyone out there is interested in scanned synthesis, mail me and I can give more details about my planned digital instrument. __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com

2 3

Real-time sound from rigid-body physics simulator?
by Randy Demsetz 13 Jul '03

13 Jul '03

Hello all, I'm brand new to this list. I'm a game developer working on an upcoming title. I'd like to use the impact forces, velocities, etc. from the game's collision detection and physics engine (rigid body, not deformable) to create realistic physical sounds (such a ball rolling on a floor, or a box striking a wall and bouncing to the floor). It has to be real-time, where the physics engine's values can only be sampled at 1/120th of a second intervals. It has to take up less than 5% of a 1.5GHz CPU processing time. Can it be done? Are there code samples of this already done (free or licensable)? Thanks, Randy

3 4

quitting pd
by Thomas Grill 10 Jul '03

10 Jul '03

Hi Miller, hi all, i noticed that there is a sys_quit flag in m_schedule.c that, when set, causes PD to exit. Is there any reason that _exit() is used (in sys_bail) instead of this flag, which would be much cleaner and the better choice for applications which just load pd as a shared library and still have the control when PD has terminated (e.g. for restarting PD again). I tried and naturally there is a short delay and an "audio stuck" console printout, but this is purely cosmetical and can be suppressed as well. If you find _exit to be the better choice one could still add a pd_quit() function which sets the sys_quit flag. best greetings, Thomas

2 2

jack and pd question
by vanDongen/Gilcher 09 Jul '03

09 Jul '03

Hi all, I am working on some jack-utility externals, to make and query port connections from within pd. If the jack-folks decide on the transport API I will add controls for that too. My questions: In jackified pd, what is run inside the jack process callback. My externals don't do any audio processing, and get their own jack-client id, so they can be run with the -noaudio flag. But can they be run in pd _with_ jack-audio, or do I need to make them multi threaded for that? They will give problems if run _inside_ the process callback. regards Gerard

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Pd-dev July 2003