Linux-audio-dev

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1 participants
7518 discussions

[linux-audio-dev] convenient ogg vorbis wrapper

by Richard Spindler

Hi, I'm looking for a convenient wrapper library for ogg vorbis, because what I've found on the xiph.org pages looks a little overengineered to me. I've used libsndfile most of the time, so this is the API Style that I'd prefer, basically I need 4 functions I believe: what_samplerate_are_you( vorbis_file ); how_long_are_you( vorbis_file ); seek_to_position( vorbis_file, 23456 ); read_data( vorbis_file, buffer ); libvorbis and libogg however have to interact in some obscure way and I honestly don't want to waste my time reinventing the wheel, while I could be hacking on a new asskicking application ;) -Richard

20 years, 2 months

[linux-audio-dev] research on lau / lad -statistics

by Michael Iber

Hello administrators, hello list members, for my research for a lecture I will be holding on opensource and audio in October in Stuttgart the following informations would be very interesting: How many people are subscribed to the lau / lad -lists. How many participate actively ? Is it possible to roughly estimate, where they are from (Amerika, US, Asia, part of Europe, Germany). Is anybody capable of providing those informations? Thank you very much, Michael

20 years, 2 months

[linux-audio-dev] JACK error 4294967295

by Hans Fugal

2.6.13.1-rt6, rlimits-patched pam and configured thus: # in /etc/security/limits.conf * - rt_priority 0 * - nice 0 @audio - rt_priority 50 @audio - nice -10 jack starts happily with realtime enabled, and the xruns are very few. But no jack application will start, they all give this error: jack_create_thread: error -1 switching current thread to rt for inheritance: Unknown error 4294967295 It's like the ol' jack is root apps can't connect days, but I thought rtlimits was supposed to make it possible for a user to get rt_priority. Am I missing something? Ah! It came to me just now - I set the priority field in qjackctl to 0 instead of 1 (where it was) and now jack apps can start. Heads up there. Maybe applications need a way to recognize what rt_priority level to ask for based on what jack is running at? On a tangent, how exactly does that work? Is rt_priority=0 sufficiently prioritized? (because it is the only thing running realtime) -- Hans Fugal | If more of us valued food and cheer and http://hans.fugal.net/ | song above hoarded gold, it would be a http://gdmxml.fugal.net/ | merrier world. | -- J.R.R. Tolkien --------------------------------------------------------------------- GnuPG Fingerprint: 6940 87C5 6610 567F 1E95 CB5E FC98 E8CD E0AA D460

20 years, 3 months

[linux-audio-dev] Re: Impulse response visualize tools

by Juhana Sadeharju

>From: Anders Torger <torger(a)ludd.luth.se> > >Does anyone know of a tool especially useful for visualizing room >impulse response measurements? Magnitude responses, waterfall plots and >such. Did you find anything? I just started browsing http://www.opendx.org which should be open source. It is a modular visualization system. Don't know if it helps but the gallery looks advanced. I have a problem in checking out the CVS, though. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

20 years, 3 months

[linux-audio-dev] [OT] problem with parallel gcc

by Julien Claassen

Hi! I wonder if someone could provide me with the right hint, for I feel it is not much to get me where I want. I have an old suse system (gcc3.2 glibc 2.2.5), now I wanted to install a newer gcc (3.4.3). It compiled fine and I can compile other programs with it. Yet there is - apparently - some configuration problem. For if I start linuxsampler or ecasound compiled with new gcc it says, it has a problem with libgcc_s.so.1. It can't find some symbol VERSION_3_3 or something to that effect. I tried ldd on those programs and it told me that they contain both libgcc_s.so.1 from /lib and /usr/local/gcc343/lib. What am I doing wrong. For I know this can work fine. I recompiled my libstdc++ (from the 3.4.3 package) with my already installed compiler to prevent it from including the old libgcc_s, but no effect. What can I do? Should I put the new library-paths at a specific point in my /etc/ld.so.conf? Set some special environment variable? Any help is GREATLY APPRECIATED! Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net - the Linux TextBased Studio guide

20 years, 3 months

[linux-audio-dev] swh-plugin errors with gcc4 - RedHat FC4

by Michael Stein

I am having issues getting my FC4 - x86-64 - GCC4.0 box to compile swh-plugins cleanly. I have applyed the patches that I have seen on this list but I still get errors ranging from not determining the proper -march value to simply failing with the following error: /bin/sh ./libtool --tag=CC --mode=link gcc -march=k8 -O3 -module -avoid-version -Wc,-nostartfiles -o hermes_filter_1200.la -rpath /usr/local/lib/ladspa hermes_filter_1200.lo util/libblo.a -lrt -lm -lm -lm *** Warning: Linking the shared library hermes_filter_1200.la against the *** static library util/libblo.a is not portable! gcc -shared .libs/hermes_filter_1200.o util/libblo.a -lrt -lm -march=k8 -nostartfiles -Wl,-soname -Wl,hermes_filter_1200.so -o .libs/hermes_filter_1200.so /usr/bin/ld: util/libblo.a(libblo_a-blo.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC util/libblo.a: could not read symbols: Bad value collect2: ld returned 1 exit status make[2]: *** [hermes_filter_1200.la] Error 1 make[2]: Leaving directory `/usr/local/src/audio_apps/swh-plugins-0.4.13' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/local/src/audio_apps/swh-plugins-0.4.13' make: *** [all] Error 2 Any help would be appreciated.

20 years, 3 months

[linux-audio-dev] Impulse response visualize tools

by Anders Torger

Does anyone know of a tool especially useful for visualizing room impulse response measurements? Magnitude responses, waterfall plots and such. I'd prefer something more efficient and quicker to work with than octave and gnuplot. /Anders Torger

20 years, 3 months

[linux-audio-dev] Re: Re: ALSA features

by Ben Loftis

Full-duplex I/O with a minimal number of intervening buffers required (i.e. very low throughput latency), preferably accessed through a callback interface like JACK's. Last time I tried this it was quite complicated. Maybe this has gotten easier in the last 2 years, but the docs don't seem to be any different. -Ben > OK. > > So what exactly is meant here by "synchronized I/O"? > > Lee > >

20 years, 3 months

[linux-audio-dev] Theremin 0.1

by james＠dis-dot-dat.net

First release. Sorry for the clanlib dependency, but it's what I could do quickly. You'll possibly need to point the makefile in the right place. A build system will appear some day. http://blog.dis-dot-dat.net/2005/09/theremin-01.html James -- "I'd crawl over an acre of 'Visual This++' and 'Integrated Development That' to get to gcc, Emacs, and gdb. Thank you." (By Vance Petree, Virginia Power)

20 years, 3 months

[linux-audio-dev] Re: ALSA features

by Ben Loftis

How about a nicer interface to do synchronized I/O ? Currently the docs say, in effect: "this is really hard .. just use JACK". I like JACK but there are someinstances where it is not needed. -Ben

20 years, 3 months

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Linux-audio-dev