Re: [linux-audio-dev] High-level sound API for python?

2007-03-31 Thread Paul Davis
On Sat, 2007-03-31 at 13:17 +0200, Dennis Schulmeister wrote: Thanks Paul and Pau for pointing me to GStreamer. I took a glimpse on some tutorials yesterday and my impression is that GStreamer is easier to handle than I thought. whatever you do, don't forget to start using the playbin element

Re: [linux-audio-dev] High-level sound API for python?

2007-03-30 Thread Paul Davis
On Fri, 2007-03-30 at 16:28 +0200, Dennis Schulmeister wrote: Hi, My question is if there's any high-level sound API for python. I don't want to process audio. Instead I'm looking for an API (or a combination thereof) which could be used to implement a small media player feeding several

Re: [linux-audio-dev] Getting out of the software game

2007-03-15 Thread Paul Davis
On Thu, 2007-03-15 at 13:12 +0100, Malte Steiner wrote: I wonder what are the alternatives, if there are any I would jump instantly. Windows Vista in which nothing works and wastes CPU cycles to spy and torture you? OSX which comes with a hefty price, limits your choice (and money) and

Re: [linux-audio-dev] Getting out of the software game

2007-03-14 Thread Paul Davis
On Wed, 2007-03-14 at 08:56 -0400, Paul Coccoli wrote: Besides, what you want is probably impossible. You can't have pre-comiled, binary-only drivers *and* a custom kernel. in theory, you certainly can. but the kernel development team, and linus in particular, are not interested in an

Re: [linux-audio-dev] Getting out of the software game

2007-03-14 Thread Paul Davis
On Wed, 2007-03-14 at 10:21 -0400, Lee Revell wrote: Why should Linux sacrifice stability just so vendors can keep their hardware interfaces secret? although i broadly agree with lee on most things, i think that this way of approaching this issue is unnecessarily confrontational. just flip it

Re: [linux-audio-dev] Re: processing plugin standard wrapper

2007-02-19 Thread Paul Davis
On Mon, 2007-02-19 at 14:18 +0100, Stefano D'Angelo wrote: How often are more than one plugin with the same control inputs used in paralel? I was rather thinking of colapsing (or swapping) plugins in series. They'd have to be linear and time invariant, of course. Or maybe plugins could

Re: [linux-audio-dev] Re: processing plugin standard wrapper

2007-02-19 Thread Paul Davis
On Mon, 2007-02-19 at 18:10 +0100, Stefano D'Angelo wrote: nope. thats not a linear arrangement of the two mono plugins, but a parallel arrangement. the signal going to each instance of the mono plugin is different. I'm obscure even in Italian, I can just imagine how it can sound like

Re: [linux-audio-dev] What does it mean for jack to be rolling (newby)

2007-02-19 Thread Paul Davis
On Mon, 2007-02-19 at 13:33 -0800, Jonathan Ryshpan wrote: On Mon, 2007-02-19 at 13:18 -0800, vreuzon wrote: Jonathan Ryshpan a écrit : The above recording session was done while jack was Stopped. Would jack work better if it were Rolling? This play button refers to jack transport

Re: [linux-audio-dev] [completely OT] c++ and UTF-8 question

2007-02-19 Thread Paul Davis
On Mon, 2007-02-19 at 19:49 -0300, Camilo Polyméris wrote: Julien Claassen wrote: Hi! I'm sorry to ask that here, but it seems I can't get an anser anywhere else. Does the libstdc++ support UTF-8 strings? Or is there some simple example code snippet somewhere to derive/modify

Re: [linux-audio-dev] Old hat - comparison against windows

2007-01-31 Thread Paul Davis
On Wed, 2007-01-31 at 21:35 +0100, David Olofson wrote: On Wednesday 31 January 2007 21:02, Michael Ost wrote: [...] We have a 32 sample setting (.7 msecs) in Receptor which I have yet to see in a Windows driver. And it actually works with some plugins, even a large sampler like Synthogy

Re: [linux-audio-dev] LADSPA needs wishes

2007-01-27 Thread Paul Davis
On Sat, 2007-01-27 at 16:05 +1100, Fraser wrote: Hi All, I've been converting my old VST plugins over to LADSPA and have come across something in the api which I really miss - the inability separate the algorithmic to the displayed value of a parameter. I'm finding this inability is leading

Re: [linux-audio-dev] Sound processing objects architecture, is it possible?

2007-01-24 Thread Paul Davis
On Wed, 2007-01-24 at 16:06 +0100, Jay Vaughan wrote: At 20:08 +0100 22/1/07, Stefano D'Angelo wrote: What I'd like to work on is a sound processing architecture (LADSPA, VST, DSSI, etc.) wrapper, which hides the details of a particular implementation to audio program developers. Nice idea.

[linux-audio-dev] a new patent for us to challenge

2007-01-24 Thread Paul Davis
http://www.freshpatents.com/Low-latency-real-time-audio-streaming-dt20060406ptan20060074637.php?type=description in which Microsoft patents designs partially implemented by OSS 10 years ago and fully implemented by ALSA 5 years ago. Wrapping this up in windows API nonsense obscures the basic fact

Re: [linux-audio-dev] Sample Rate Converter Comparison

2007-01-23 Thread Paul Davis
On Tue, 2007-01-23 at 14:31 +, John Rigg wrote: On Tue, Jan 23, 2007 at 08:53:13AM +1100, Erik de Castro Lopo wrote: Hi all, SecretRabbitCode was recently included in a test of a number of commercially available sample rate converters and while it wasn't the best, it certainly

Re: [linux-audio-dev] Sample Rate Converter Comparison

2007-01-22 Thread Paul Davis
On Tue, 2007-01-23 at 08:53 +1100, Erik de Castro Lopo wrote: Hi all, SecretRabbitCode was recently included in a test of a number of commercially available sample rate converters and while it wasn't the best, it certainly didn't disgrace itself either. congrats Erik. as you said, not the

Re: [Consortium] Re: [linux-audio-user] Re: [linux-audio-dev] LAD/LAU/LAA/Consortium/...

2007-01-19 Thread Paul Davis
On Fri, 2007-01-19 at 11:54 +0100, Marc-Olivier Barre wrote: Ok, Apparently forum addicts have decided to hijack this thread though, the original question was : do you want LA* _lists_ (LIST is the keyword here, can't stress it enough) to be moved to linuxaudio.org. I have noting

Re: [linux-audio-dev] Recommended books for new audio developers

2007-01-16 Thread Paul Davis
On Tue, 2007-01-16 at 07:30 -0500, Dave Phillips wrote: Damon Chaplin wrote: What are the recommended books to read for people new to audio development? (Covering things like synthesis techniques, effects processing and basic acoustics stuff.) On the bottom of the Documentation section of

Re: [linux-audio-dev] an relevant link about Vista

2007-01-15 Thread Paul Davis
On Mon, 2007-01-15 at 20:00 +0100, Richard Spindler wrote: 2007/1/15, Dave Phillips [EMAIL PROTECTED]: This link may have been posted here before now, but it bears repetition : http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.txt Nasty stuff planned in Redmond. It seems as

Re: [linux-audio-dev] alsa mixing

2007-01-10 Thread Paul Davis
On Mon, 2007-01-08 at 23:23 +0100, Milan Mimica wrote: Hello! We're designing a new sound subsystem for allegro game programming library, and we would like to take advantages of multiple hardware voice capabilities. very few audio interfaces have this feature anymore. most h/w makers seem

Re: [linux-audio-dev] alsa mixing

2007-01-10 Thread Paul Davis
On Wed, 2007-01-10 at 18:02 +0200, Jussi Laako wrote: Paul Davis wrote: in general, you should forget about the h/w capabilities of an audio interface. for every user that has a device with some interesting qualities, there will be 10 who do not. welcome to winmodem for audio

Re: [linux-audio-dev] Simple music sequencer/sample player (drummmachine?)

2007-01-03 Thread Paul Davis
On Wed, 2007-01-03 at 16:28 -0500, kind king knight wrote: I need a framework of a sequenced sample player. This is becouse I want to start my own project, and don't want to invent everything from scratch. Ofcourse there is lot of this kind opensource applications, but I need the simplest. -

Re: [linux-audio-dev] plugin loaders

2006-12-20 Thread Paul Davis
On Wed, 2006-12-20 at 15:43 -0800, Anthony Green wrote: I understand that LADSPA and friends specifically exclude any functionality around how to find and load plugins, but it seems that a lot can be gained by introducing some standards in this area. As a package of audio apps/plugins for

Re: [linux-audio-dev] plugin loaders

2006-12-20 Thread Paul Davis
On Thu, 2006-12-21 at 02:02 +0100, Leonard Ritter wrote: Hi Anthony, I guess most of us use the sample enumeration c code included with the LADSPA sources as starting point. This code expects a LADSPA_PATH variable to be set. As a fallback, I suppose most programmers added

Re: [linux-audio-dev] Audio Driver Sample Code

2006-12-18 Thread Paul Davis
On Sun, 2006-12-17 at 19:43 -0800, oscar si wrote: Hello: Could anyone please tell me if there are sample driver codes for PCI based sound card that are not using either alsa or oss? why would you want such a thing?

Re: [linux-audio-dev] restarting jack

2006-11-22 Thread Paul Davis
On Wed, 2006-11-22 at 15:40 +0100, conrad berhörster wrote: Hello all, is there a way to restart jack out of an application, or is this the reason, why ardour need a running jackd. i want to write an application with a reinit app button and need a way to restart jackd, if it has been

Re: [linux-audio-dev] Anyone to Desktop Architects Meeting 3?

2006-11-16 Thread Paul Davis
On Thu, 2006-11-16 at 18:50 +0100, Takashi Iwai wrote: Hi, is anyone interested in participating in the third Desktop Architects Meething (DAM) on December 7-8 in Beaverton near Portland, Oregon? I'm not able to attend it (I'll be in vacation in Japan exactly at that time), and hope someone

Re: [linux-audio-user] Re: [linux-audio-dev] M$/SuSE/ALSA ?

2006-11-12 Thread Paul Davis
On Sun, 2006-11-12 at 22:02 +0700, Patrick Shirkey wrote: They might pay Stephane Letz some money to port JACK though ;-) Stephane has already ported JACK to windows.

Re: [linux-audio-dev] [ANN] kbdz 0.2.0a

2006-11-08 Thread Paul Davis
On Wed, 2006-11-08 at 23:19 +0100, Elthariel wrote: Thk you for testing it. You build problem looks quite strange, is there any error message about other EV_XXX identifier missing. EV_SW is a macro defined in linux/input.h can you send me your version of the kernel and your

Re: [linux-audio-dev] OSS will be back (was Re: alsa, oss , efficiency?)

2006-11-06 Thread Paul Davis
On Mon, 2006-11-06 at 16:38 -0500, Paul Winkler wrote: On Mon, Nov 06, 2006 at 01:39:43PM -0500, Lee Revell wrote: Real linux drivers reside in the mainline kernel. Out of tree stuff is is irrelevant. I don't think that's a fair blanket statement given that drivers often begin life

Re: [linux-audio-dev] alsa, oss , efficiency?

2006-11-02 Thread Paul Davis
On Thu, 2006-11-02 at 20:58 +0100, Jens M Andreasen wrote: On Thu, 2006-11-02 at 10:33 +0100, lemmel wrote: Lots of people have been wondering, but this is the meat I think: and even randomly truncated, The difference in behaviour /might/ arise from differences in philosophy of

Re: [linux-audio-dev] Re: alsa, oss , efficiency?

2006-11-01 Thread Paul Davis
On Wed, 2006-11-01 at 22:32 +0100, lemmel wrote: Well, all the files, that I will play, will have the same charactistics, do I really need to bother with an hi-level API [2] ? [1] I noticed that a lot of applications still use OSS, and I thought it was because the migration to ALSA was

Re: [Jackit-devel] [linux-audio-dev] Re: Multiplexing 4 channels on SPDIF

2006-10-30 Thread Paul Davis
On Mon, 2006-10-30 at 18:52 +0100, Fons Adriaensen wrote: - hardware presents itself as 2 * 96 kHz - user wants to see a device with 4 * 48 kHz. interestingly, ADAT devices do the opposite to get to SR's above 48kHZ: - hardware runs as N * 48 kHz channels - data is

Re: [linux-audio-dev] best option for audiovisual synchrony

2006-10-20 Thread Paul Davis
On Fri, 2006-10-20 at 22:44 +0200, Tim Goetze wrote: [Fons Adriaensen] Input the vertical video sync signal via the audio card and analyse its timing in terms of audio samples (e.g. using a DLL). This will enable you to predict where the next sync will be in the audio input. Back in the

Re: [linux-audio-dev] Paper on dynamic range compression

2006-10-17 Thread Paul Davis
On Tue, 2006-10-17 at 11:56 +0200, Fons Adriaensen wrote: 'THE SAMPLES ARE NOT THE SIGNAL'. The real peak level of a signal when converted to the analog domain can be several dB above that of the highest sample. indeed. there are people who are coming to believe that this error is responsible

Re: [linux-audio-dev] Re: very nice looking HW

2006-09-06 Thread Paul Davis
On Wed, 2006-09-06 at 22:11 +0100, John Rigg wrote: Hmm. The manufacturer's web page describes it as a 32 channel interface but I could only count 16 :(

Re: [linux-audio-dev] Re: very nice looking HW

2006-09-06 Thread Paul Davis
On Wed, 2006-09-06 at 22:11 +0100, John Rigg wrote: Hmm. The manufacturer's web page describes it as a 32 channel interface but I could only count 16 :( many companies count input + output separately. RME, for example.

[linux-audio-dev] i'd like my software back (ICube MIDI sensor kit)

2006-08-30 Thread Paul Davis
several years ago, i wrote an system to control an ICube MIDI Sensor interface, described here: http://equalarea.com/paul/icube unfortunately, the actual software has gone missing, even google cannot find it. if anyone has a copy of the software, i'd like to get a copy of it.

Re: [linux-audio-dev] job offer... [Fwd: Algorithm Development Manager (Full-Time)]

2006-08-25 Thread Paul Davis
On Fri, 2006-08-25 at 17:02 +, carmen wrote: i guess everyone has to pay the rent somehow...but do a indeed/simplyhired search for linux audio, or similar. and check out the names of the top 10 entriesSony, Avid, Qualcomm. id rather work at starbucks than give them more intellectual

Re: [linux-audio-dev] Linux kernel HZ, audio latency and how to measure?

2006-08-19 Thread Paul Davis
On Sat, 2006-08-19 at 05:16 -0700, Stephen Cameron wrote: On Fri, 2006-08-18 at 20:39 -0400, Stephen Sinclair wrote: Audio doesn't use setitimer()-driven sleeping. It's interrupt-driven, not timer-driven. Yes, the driver is interrupt driven, but the driver interrupt handler is only

Re: [linux-audio-dev] scaling jackinput to dbSPL

2006-08-15 Thread Paul Davis
The db inside jack are dbFS with a maximum possible signal of 0 db. Now, both jacqeq and jackmix give you a maximum conrol level at +6dB. It mean at +6dB in those EQ is equal to 0dbFS in jack. there are no dB units inside of JACK. some JACK applications use dBFS, that much is true. however, it

Re: [linux-audio-dev] Re: Akai's MPC4000 Sampler/Workstation Open Source Project

2006-07-27 Thread Paul Davis
Someone called illiac wrote: Linux as it is ordinarily distributed is not a small-footprint real- time operating system. You will notice that your cell phone does not run Linux. There is a reason for that. i am sure nokia will be interested in your reason, since they don't seem to have

Re: [linux-audio-dev] diskstream and jack

2006-07-14 Thread Paul Davis
On Fri, 2006-07-14 at 13:27 +0200, conrad berhörster wrote: Hello maarten and dmitry and the rest, thanks for the quick answers. Faster means, that the workerthread is called more often than the jackthread no, the workerthread should *not* be called more often than the jackthread. either

Re: [linux-audio-dev] light C++ set for WAV

2006-07-13 Thread Paul Davis
On Thu, 2006-07-13 at 21:11 +0200, Dirk Jagdmann wrote: Libsndsfile is plain C, but will do what you want without any fuss. You could write a WAV specific C++ wrapper on top of this in a few minutes. libsndfile is superb, but sometimes you don't want to link against external libraries in

Re: [linux-audio-dev] memory-mapped wav files

2006-07-13 Thread Paul Davis
On Fri, 2006-07-14 at 00:56 +0400, Dmitry Baikov wrote: If you need to stream a file, mmap'ed variant will eat memory up to file size. Given large enough file, it will eat all you memory and then will begin to page out unused portions of the file. Of course, details on when and where will vary

Re: [linux-audio-dev] light C++ set for WAV

2006-07-13 Thread Paul Davis
On Fri, 2006-07-14 at 06:48 +1000, Erik de Castro Lopo wrote: but I am not a fan nor a great user of C++. The wrapper should really be written by someone with a love for the language. LOL! that's pretty great. not a fan translates in real world terms into one of LAD's most persistent critics of

Re: [linux-audio-dev] realtimeness: pthread_cond_signal vs. pipe write

2006-07-11 Thread Paul Davis
On Tue, 2006-07-11 at 17:06 -0400, Dave Robillard wrote: Semaphores seem about perfect for this to me.. am I missing something? Why doesn't anyone ever recommend them? i think mostly because in 2000-2001, they were very slow.

Re: [linux-audio-dev] Converting a 24bit sample to 16bit

2006-07-08 Thread Paul Davis
On Sat, 2006-07-08 at 13:34 +0100, James Courtier-Dutton wrote: Hi, Is there a standard way of converting a 24bit sample to 16bit? I ask because I think that in different scenarios, one would want a different result. 1) scale a 24bit value to a 16bit by simple multiplication by a fraction.

Re: LinuxSampler license, was Re: [linux-audio-dev] fst, VST 2.0, kontakt

2006-07-04 Thread Paul Davis
On Tue, 2006-07-04 at 07:48 +0200, Andreas Kuckartz wrote: I have a simple question: Which companies are (or have been) distributing LinuxSampler as part of a package also including hardware and/or proprietary software? as noted liontracs do, and that means that is incumbent upon me to

Re: LinuxSampler license, was Re: [linux-audio-dev] fst, VST 2.0, kontakt

2006-07-03 Thread Paul Davis
On Mon, 2006-07-03 at 02:26 +0700, Patrick Shirkey wrote: If they really want to get people to give money then they should just make it so that you have to pay or contribute code/time for a while to get access to the newest downloads from their site. Keep the stable version far enough

Re: LinuxSampler license, was Re: [linux-audio-dev] fst, VST 2.0, kontakt

2006-07-03 Thread Paul Davis
On Tue, 2006-07-04 at 10:22 +1000, Ryan Heise wrote: On Mon, Jul 03, 2006 at 05:55:11PM -0400, Paul Davis wrote: both guesses are wrong. i think it will be precise enough to say that a company expressed what appeared to be a serious interest in leveraging the existence of LS for its own

Re: [linux-audio-dev] fst, VST 2.0, kontakt

2006-06-29 Thread Paul Davis
On Thu, 2006-06-29 at 18:35 -0400, Forest Bond wrote: I've been looking at fst, and was going to package it for Ubuntu. you cannot legally package FST. please do not do this. its not likely that steinberg will come after you, and neither torben nor I are likely to either, but its a violation of

Re: [linux-audio-dev] What valgrind says

2006-06-24 Thread Paul Davis
On Sat, 2006-06-24 at 23:26 +0100, [EMAIL PROTECTED] wrote: Hi peeps. I've just been running an app through valgrind and I'm getting a few of these: ==11955== Syscall param write(buf) points to uninitialised byte(s) ==11955==at 0x4D51BDB: (within /lib64/libpthread-2.4.so) ==11955==

Re: [linux-audio-dev] LV2 update

2006-06-20 Thread Paul Davis
On Tue, 2006-06-20 at 15:26 +0100, Steve Harris wrote: On Tue, Jun 20, 2006 at 09:39:30 -0400, Dave Robillard wrote: I can make the plugin validating host check the latency primitively (eg run a single sample through the buffer) and fail if it isn't reported correctly, so we're sure the

[linux-audio-dev] libsndfile stuff

2006-06-20 Thread Paul Davis
svn should once again have working (better than before the libsndfile changes) support for tape tracks. what a total pain this has been, but i think the end result is worth it - a standard library shared with other apps. let me know if you have issues with it. it may not work with existing

Re: [linux-audio-dev] LADSPA Extension for Extra GUI Data

2006-06-19 Thread Paul Davis
On Tue, 2006-06-20 at 00:57 +0200, Fons Adriaensen wrote: It's not beyond the realms of the possible to describe the mathematical relationship between the octave pitch unit and Hz, but it's probably excessive. A well-designed set of tags like the ones you show above would probably solve

Re: [linux-audio-dev] Re: Writing LADSPA plugins in high level language?

2006-06-15 Thread Paul Davis
On Thu, 2006-06-15 at 16:32 +0900, David Cournapeau wrote: I am in no way as experienced as most people on this list for audio programming, but I don't see why C/C++ should be the only way to write software to handle audio stream, neither do I see why GC would be the only useful feature. For

Re: [linux-audio-dev] Jack's IPC overhead

2006-06-15 Thread Paul Davis
On Thu, 2006-06-15 at 10:49 -0700, Michael Ost wrote: As we looked over the Jack docs, it seems like a natural for supporting this kind of architecture. We would break out our VST support into a separate app and connect them to our Host app via Jack. This seems to be how FST is implemented and

Re: [linux-audio-dev] realtimeness: pthread_cond_signal vs. pipe write

2006-06-07 Thread Paul Davis
On Wed, 2006-06-07 at 11:12 +0300, Jussi Laako wrote: Paul Davis wrote: writing to a pipe is not 100% RT safe, but if the pipe is created in a shm filesystem, its as close to it as you will get without ... Nowadays, there's also available a very good interface from POSIX RT extensions

Re: [linux-audio-dev] realtimeness: pthread_cond_signal vs. pipe write

2006-06-05 Thread Paul Davis
On Mon, 2006-06-05 at 01:21 +0200, Stefan Westerfeld wrote: Hi! I am trying to notify a high priority (nice -20 or nice -19) thread from a realtime thread (from a jack callback to be precise). Of course I want the realtime thread to not block, but I want the high priority thread to react

Re: [linux-audio-dev] precise event timer examples (HPET?)

2006-05-30 Thread Paul Davis
On Tue, 2006-05-30 at 09:23 +0200, Clemens Ladisch wrote: If you want to avoid the syscall overhead, you can try to call mmap() on /dev/hpet and read the timer directly. In that case, you don't need to use any header. and as a reminder, there is code within JACK now to do this, if you want an

Re: [linux-audio-dev] crossplatform atomics

2006-05-24 Thread Paul Davis
On Thu, 2006-05-25 at 02:44 +0200, Jens M Andreasen wrote: On Thu, 2006-05-25 at 02:24 +0200, Jens M Andreasen wrote: I am looking for a cross-platform implementation of an atomic integer. sizeof(int) is your friend int speedy; as well, since int is defined to be the fastest

Re: [linux-audio-dev] [ANN] Sonic Visualiser: An application for audio visualisation and analysis

2006-05-23 Thread Paul Davis
On Tue, 2006-05-23 at 13:54 +0200, Alexandre DENIS wrote: 3. dlopen libjack from within the program and continue if it fails I haven't tried that; is it a reasonable option? It would require to dlsym() every libjack symbol. A better option seems to be: i don't believe that is true.

Re: [linux-audio-dev] Skype, ekiga, audacity, other audio util probs.

2006-05-20 Thread Paul Davis
On Sat, 2006-05-20 at 02:31 -0500, Gene Heskett wrote: I should add another program which is crippled by this same problem Lee, is grip. It can rip a cd, but cannot play the cd even when not ripping it. And the ripped sound isn't up to the usual quality, often sounding as if the

Re: [linux-audio-dev] Skype, ekiga, audacity, other audio util probs.

2006-05-20 Thread Paul Davis
On Sat, 2006-05-20 at 09:27 -0500, Gene Heskett wrote: Paul Davis wrote: On Sat, 2006-05-20 at 02:31 -0500, Gene Heskett wrote: I should add another program which is crippled by this same problem Lee, is grip. It can rip a cd, but cannot play the cd even when not ripping

Re: [linux-audio-dev] [ANN] Sonic Visualiser: An application for audio visualisation and analysis

2006-05-19 Thread Paul Davis
On Fri, 2006-05-19 at 15:27 +0100, Chris Cannam wrote: Announcing Sonic Visualiser, an application for viewing and analysing the contents of music audio files. http://www.sonicvisualiser.org/ massive props! err, does that make me sound a like 40-something father of 3 trying to be cool?

Re: [linux-audio-dev] LADSPA2: logarithmic hint

2006-05-02 Thread Paul Davis
On Tue, 2006-05-02 at 17:57 +0200, Alfons Adriaensen wrote: I can't imagine any sane interface standard for audio controls without a way to say that the natural way to represent a port's range is exponential. saying that the port range is exponential doesn't pin it down very much. it still

Re: [linux-audio-dev] Todays LADSPA2 update

2006-04-26 Thread Paul Davis
On Wed, 2006-04-26 at 11:51 +0100, Steve Harris wrote: I've written a first cut at an ontology/schema for the plugin RDF: http://plugin.org.uk/ladspa2/ladspa-2.ttl The term schema is a bit misleading, as it doesn't really enforce anything, it really just gives you some hints about what to

Re: [linux-audio-dev] Todays LADSPA2 update

2006-04-26 Thread Paul Davis
On Wed, 2006-04-26 at 12:22 +0100, Steve Harris wrote: Paul, while I've got your attention, are you OK with droppping runAdding? You're the person who most likly to have implemented it I think. 99% of my plugins support it, but it would have made my life much easier if they didn't.

Re: [linux-audio-dev] LADSPA 2

2006-04-25 Thread Paul Davis
On Tue, 2006-04-25 at 22:05 -0400, Phil Frost wrote: You are not alone on this one. I think it's great to have as much data as possible in a place that need not be dlopened to access. However, if I have to learn to use some whizz-bang library to read yet another markup language, spend an hour

Re: [linux-audio-dev] Re: [linux-audio-user] [ANN] Snd-ls V0.9.6.2

2006-04-14 Thread Paul Davis
On Fri, 2006-04-14 at 16:47 +0200, [EMAIL PROTECTED] wrote: P == Paul Davis [EMAIL PROTECTED] writes: P P On Thu, 2006-04-13 at 17:45 -0700, Kjetil S. Matheussen wrote: The biggest thing about this release of Snd-ls is probably that the rt-player is enabled by default. The rt-player

[linux-audio-dev] Re: [linux-audio-user] [ANN] Snd-ls V0.9.6.2

2006-04-13 Thread Paul Davis
On Thu, 2006-04-13 at 17:45 -0700, Kjetil S. Matheussen wrote: The biggest thing about this release of Snd-ls is probably that the rt-player is enabled by default. The rt-player is an alternative player engine for SND that plays soundfiles using the rt-extension and reads data from disk

Re: [linux-audio-user] Re: [linux-audio-dev] music engine

2006-04-12 Thread Paul Davis
On Wed, 2006-04-12 at 08:40 -0400, Dave Robillard wrote: On Tue, 2006-04-11 at 12:10 -0700, Kjetil Svalastog Matheussen wrote: Paul Davis: As an interface designer, the first thing I look for on an engine's project site is some sort of asynchronous API - I should never concern myself

Re: [linux-audio-dev] [ot] How do GUI-libs notify the program of changes?

2006-04-10 Thread Paul Davis
On Mon, 2006-04-10 at 12:26 -0400, Dave Robillard wrote: If you want this in C++, you definitely want to use libsigc++. (Keyword definitely) actually, its worse than that. if you do this in C++ and you do not use libsigc++, then a team of ninja open source developers will enter your house

Re: [linux-audio-dev] [ot] How do GUI-libs notify the program of changes?

2006-04-10 Thread Paul Davis
On Mon, 2006-04-10 at 21:02 +0200, Julien Claassen wrote: In Apr 10 A.D. 2006 Paul Davis scripsit: On Mon, 2006-04-10 at 12:26 -0400, Dave Robillard wrote: If you want this in C++, you definitely want to use libsigc++. (Keyword definitely) actually, its worse than that. if you

Re: [linux-audio-user] Re: [linux-audio-dev] music engine

2006-04-10 Thread Paul Davis
On Mon, 2006-04-10 at 14:58 -0800, Patrick Stinson wrote: Paul, Everyone, What kind of assumptions can we make about the performance of the various FIFO pipe/socket/whatever mechanisms on a POSIX machine? This is by no means my area of expertise, but I currently hold the assumption that a

Re: [linux-audio-user] Re: [linux-audio-dev] music engine

2006-04-07 Thread Paul Davis
On Fri, 2006-04-07 at 14:23 -0800, Patrick Stinson wrote: As an added note to my previous comments, I really like the app interface that mpd uses. Writing ascii events using some spec or another to a file descriptor (socket in mpd's case) seems to be a terrific way to communicated with apps

Re: [linux-audio-user] Re: [linux-audio-dev] music engine

2006-04-06 Thread Paul Davis
On Thu, 2006-04-06 at 11:48 -0400, Lee Revell wrote: On Thu, 2006-04-06 at 04:14 -0800, Patrick Stinson wrote: I've been looking for a high-performance music engine. It must have an asynchronous control (socket, pipe?) mechanism to seperate the application from the audio thread. I'm

Re: [linux-audio-dev] GPL Audio Hardware

2006-04-03 Thread Paul Davis
On Mon, 2006-04-03 at 22:58 -0400, Lee Revell wrote: On Mon, 2006-04-03 at 21:33 -0500, Richard Smith wrote: The following post came across the the Open graphics list from one of the founders of the project looking for other things to do with the technology they have developed. Heh... I

[linux-audio-dev] Re: [linux-audio-user] [ANN] Kontroll

2006-03-26 Thread Paul Davis
On Mon, 2006-03-27 at 01:08 +0200, Florian Schmidt wrote: On Mon, 27 Mar 2006 00:49:04 +0200 Florian Schmidt [EMAIL PROTECTED] wrote: http://tapas.affenbande.org/?page_id=42 Oh and i forgot to ask a question: What is the canonical way for a gtk app to receive hotkey press events

Re: [linux-audio-dev] CLI wanted - Need PCM to generic SBout on Smoothwall-2 stock kernel

2006-03-15 Thread Paul Davis
On Wed, 2006-03-15 at 10:11 -0800, muzak24h wrote: The DSP can be from port 0x210 to 0x260. (there's code to find it) The IRQ number can be found too. (there's code there to find it too) controlling a DSP requires writing to registers, not just memory-mapped ports. it also typically requires an

Re: [linux-audio-dev] Re: Letter to kernel developers?

2006-03-13 Thread Paul Davis
On Mon, 2006-03-13 at 00:34 -0500, Lee Revell wrote: On Mon, 2006-03-13 at 00:23 -0500, Paul wrote: Are these the threads you are refering to? 2.6.X, NPTL, SCHED_FIFO and JACK : http://lkml.org/lkml/2004/6/30/104 I was looking for the thread(s) referenced in the above message:

Re: [linux-audio-user] Re: [linux-audio-dev] [ANN] netjack-0.9rc1

2006-03-13 Thread Paul Davis
On Mon, 2006-03-13 at 16:45 -0500, Lee Revell wrote: On Mon, 2006-03-13 at 22:21 +0100, [EMAIL PROTECTED] wrote: On Sun, Mar 12, 2006 at 03:50:26PM -0500, Lee Revell wrote: On Sun, 2006-03-12 at 14:06 +0100, [EMAIL PROTECTED] wrote: netjack-0.9rc1 is here... endianess issues fixed.

Re: [linux-audio-user] Re: [linux-audio-dev] [ANN] netjack-0.9rc1

2006-03-13 Thread Paul Davis
On Mon, 2006-03-13 at 23:10 +0100, fons adriaensen wrote: On Mon, Mar 13, 2006 at 10:21:39PM +0100, [EMAIL PROTECTED] wrote: On Sun, Mar 12, 2006 at 03:50:26PM -0500, Lee Revell wrote: Why do you use big-endian on the wire, requiring a double swap for x86 - x86? Wouldn't LE make more

Re: [linux-audio-user] Re: [linux-audio-dev] [ANN] netjack-0.9rc1

2006-03-13 Thread Paul Davis
On Tue, 2006-03-14 at 00:21 +0100, fons adriaensen wrote: On Mon, Mar 13, 2006 at 11:59:15PM +0100, stefan kersten wrote: as paul stated, network byte order is defined to be big-endian, so yes, you have to convert 32 bit floats (and doubles, for that matter) on intel, because they are

Re: [linux-audio-dev] Writing PCM to left and right channel sperately?

2006-03-09 Thread Paul Davis
On Thu, 2006-03-09 at 16:28 +0100, Tobias Scharnberg wrote: Hello List, I'm new to audio programming and have problems finding the right solutions for the development I work on right now: I need to use the left and the right audio channel seperately. The device is an ARM based board with

Re: [linux-audio-dev] Writing PCM to left and right channel sperately?

2006-03-09 Thread Paul Davis
On Thu, 2006-03-09 at 17:01 +0100, Tobias Scharnberg wrote: What do you mean - there are many ways when using ALSA or are there also ways when using OSS. I know - this is RTFM worthy - but I have no time for that, so a pointer would be very helpful! if you use OSS the kernel will print a

Re: [linux-audio-dev] Juce now has ALSA support!

2006-03-02 Thread Paul Davis
no, it would provide names like MOTU 828 mkII channel 1+2 RME HDSP (#1) Builtin Audio to the user. it would also fix a myriad of other problems in ALSA, such as its reliance on interrupts that occur at regular sample-based intervals, Can you suggest

Re: [linux-audio-dev] Juce now has ALSA support!

2006-03-01 Thread Paul Davis
On Thu, 2006-03-02 at 00:09 +0100, David Kastrup wrote: Lee Revell [EMAIL PROTECTED] writes: On Wed, 2006-03-01 at 22:32 +0100, David Kastrup wrote: What happens now if I do aplay -D spdif something.wav ? Most certainly not the soundcard with the S/PDIF output gets used. Instead some

Re: [linux-audio-dev] Juce now has ALSA support!

2006-03-01 Thread Paul Davis
On Wed, 2006-03-01 at 17:28 -0500, Lee Revell wrote: On Wed, 2006-03-01 at 17:18 -0500, Paul Davis wrote: now that's what i call a sick joke. if only i had more time, i'd be writing CoreAudio for linux right this very second. Which would magically make 5 zillion different sound

Re: [linux-audio-dev] Juce now has ALSA support!

2006-02-28 Thread Paul Davis
On Tue, 2006-02-28 at 21:49 +, Julian Storer wrote: Hi folks A while ago there was some talk on the newsgroup about my Juce library, and people were asking if/when I'd add support for audio under Linux.. well it's taken me a while to get round to it, but I finally battled through the

Re: [linux-audio-dev] Karlsruhe

2006-02-27 Thread Paul Davis
On Mon, 2006-02-27 at 19:24 +0100, Christoph Eckert wrote: * There are some old towns nearby worth a visit like Worms, Speyer, Freiburg and Strasbourg. The last one really is worth a visit, and you have even been to France/Alsace :) Ahem. Hiedelberg? The jewel of the Neckar ? Also, the

[linux-audio-dev] Re: [linux-audio-user] Free Software vs. Open Source: Where do *you* stand?

2006-02-20 Thread Paul Davis
On Mon, 2006-02-20 at 14:55 -0500, Pete Bessman wrote: So let's hear it! WHAT is your NAME? WHAT is your QUEST? i can hack ardour part time while i work. i can hack ardour full time while i live the rest of my life. but i know for sure that i definitely can't get into philosophical debates

Re: [linux-audio-dev] Programming Synth Knobs?

2006-02-10 Thread Paul Davis
On Sat, 2006-02-11 at 02:29 +0100, [EMAIL PROTECTED] wrote: Does anyone know a good way to write code that renders synth knobs/potis/controllers? I was looking around to rotate an image which only worked in opengl... Creating a circle took too much time in sdl. the gimp has/had an animation

Re: [linux-audio-dev] open standards for file formats

2006-01-30 Thread Paul Davis
On Mon, 2006-01-30 at 11:13 +, cdr wrote: i know design by committee can be horrible but these situations usually utilize vastly similar yet incompatible formats, so its sort of biting off something small, i hope.. :) (1) Peak Files some of my favorite wav files have 10 metafiles

[linux-audio-dev] Re: [linux-audio-user] LAD site, linuxdj.com needs a new home

2006-01-30 Thread Paul Davis
On Mon, 2006-01-30 at 11:29 +0100, Benno Senoner wrote: Hi LADers, During the last months the LAD website ( http://www.linuxdj.com/audio/lad ) was hosted on the lionstracs.com server. Domenico from Lionstracs told me that he does not want do host the LAD site anymore since it consumes

[linux-audio-dev] xt2 coming to linux

2006-01-27 Thread Paul Davis
Screenshot: http://www.kvraudio.com/forum/viewtopic.php? t=114488postdays=0postorder=aschighlight=linuxstart=105 i will be interested to see just how good its audio handling capabilities are. --p

Re: [linux-audio-dev] xt2 coming to linux

2006-01-27 Thread Paul Davis
On Fri, 2006-01-27 at 14:13 +, Chris Cannam wrote: On Friday 27 Jan 2006 14:03, Michael Bohle wrote: I don't like dssi-vst so much, too buggy Your bug reports and fixes have been invaluable. It dosn't work with fst 1.7 because of a graphical prob. I notice jacklab.net offers a

Re: [linux-audio-dev] xt2 coming to linux

2006-01-27 Thread Paul Davis
fer cryin out loud, will you guys *look* at the screenshot! it already has JACK working! Hmm, must have something on my eyes, see only screenshots with dssi-vst wrapping eXT. OK, dssi-vst working as a Jackclient... but where for hell is the screenshot of a native build of a jackified eXT?

Re: [linux-audio-dev] xt2 coming to linux

2006-01-27 Thread Paul Davis
On Fri, 2006-01-27 at 20:43 +0100, Richard Spindler wrote: Writing against the native ALSA API is a pain, because it requires much more low level stuff, that I don't really care for. And on top of that it'd also require me to setup my own thread for the callback mechanism. i thought this too

Re: [linux-audio-dev] xt2 coming to linux

2006-01-27 Thread Paul Davis
On Fri, 2006-01-27 at 18:21 -0500, Lee Revell wrote: On Fri, 2006-01-27 at 23:04 +, Chris Cannam wrote: Lee Revell: Won't help if the code is to be part of a GPL'd application. The Linux kernel is a GPL'ed application yet Nvidia gets away with linking into it.

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