Linux-audio-dev April 2012

linux-audio-dev@lists.linuxaudio.org

44 participants
30 discussions

by Pedro Lopez-Cabanillas

On Friday 06 January 2012, you wrote: > btw: is there a way to list available clients/ports from the api. > I know that aconnect -i / -o does this, but is there a c/c++ function? > > Dave The functions are: snd_seq_query_next_client() and snd_seq_query_next_port(); you need to loop calling these functions while they return a correct answer. For instance, this is the relevant code in "aconnect.c" : static void do_search_port(snd_seq_t *seq, int perm, action_func_t do_action) { snd_seq_client_info_t *cinfo; snd_seq_port_info_t *pinfo; int count; snd_seq_client_info_alloca(&cinfo); snd_seq_port_info_alloca(&pinfo); snd_seq_client_info_set_client(cinfo, -1); while (snd_seq_query_next_client(seq, cinfo) >= 0) { /* reset query info */ snd_seq_port_info_set_client(pinfo, snd_seq_client_info_get_client(cinfo)); snd_seq_port_info_set_port(pinfo, -1); count = 0; while (snd_seq_query_next_port(seq, pinfo) >= 0) { if (check_permission(pinfo, perm)) { do_action(seq, cinfo, pinfo, count); count++; } } } } See: http://git.alsa-project.org/?p=alsa-utils.git;a=blob;f=seq/aconnect/aconnec… I guess you already know the reference documentation site: http://www.alsa-project.org/alsa-doc/alsa-lib/seq.html Just for comparison, a similar enumeration using Drumstick looks like this: QListIterator<PortInfo> it(m_Client->getAvailableOutputs()); while(it.hasNext()) { PortInfo p = it.next(); cout << p.getClientName() << ":" << p.getPort(); } See Drumstick's example "drumgrid": http://drumstick.sourceforge.net/docs/drumgrid.cpp-example.html Regards, Pedro

10 years, 11 months

Faust MIDI?

by Carlo Capocasa

Hi, is it possible to send and receive MIDI with a FAUST program? Carlo

11 years, 11 months

Possible gpl validation

by hermann

Hi all For some time now there is a website witch offer a USB stick, a slackware based Audio bundle full with GPL'd software. I have some discussions with the provider, because he wouldn't make the source available to his (possible) users, and he wouldn't make them aware that they have the right to receive the source. I have contacted license-violation(a)gpl-violations.org and get a fast response first. On my question if they see a GPL validation they wrote after visit the site : > Looks like it. On the website he/she claims that everything is under > GPL. I would suggest contacting the person in question, gently > pointing > out to his/her obligations. > > If you have already done so, let us know and we'll try again. Well, I let them know that I've try it without success. Unfortunately I didn't hear any more from them for more the 2 weaks. Is anyone here on the list knowing what is to do now, what could we do to make the provider aware that he must offer the source in the same way then the binary's, and that he must make clear that users have the right to receive the source. I guess most of the Copyright-holders from the used applications are members of this list. At least, I still believe that no one how buy this stick, ever have a interest in the source, so it is just a mater of respect for the GPL, but, it's a shame for me to see the GPL validate in such a way and get on top of that a response from the provider in a "Fuck off" attitude. To bad that I need to provide the link to this crap here, so that you could have a look at it: http://www.getstudio1337.com/ here is the discussion about the issue: http://www.linuxmusicians.com/viewtopic.php?f=4&t=7928 any Ideas what to do ? Or I'm completely wrong in my understand of the GPL? greets hermann

11 years, 12 months

Linux Audio Conference 2012 at CCRMA - live stream coverage starting tomorrow

by Jörn Nettingsmeier

Hi *! On behalf of the conference organizers, we would like to invite you to join the Linux Audio Conference 2012, kindly hosted by the Center for Computer Research in Music and Acoustics (CCRMA) at Stanford University. The conference will start tomorrow, Thursday April 12, at 10:00 PST (that's UTC - 0700). Please refer to the schedule at http://lac.linuxaudio.org/2012/program for detailed information. We will be streaming all paper presentations live in Ogg Theora/Ogg Vorbis format. Users of the Firefox browser should be able to watch this natively without any plugins. For users of other browsers, we recommend VLC, a cross-platform media player which you can download from http://videolan.org. You are invited to join us on IRC while you're watching the streams, the conference channel is #lac2012 on freenode.net, to be accessed with the chat client of your choice, or via http://webchat.freenode.net/?channels=lac2012 Remote participants can post their questions or remarks on this channel, and a local chat operator here in Stanford will then relay them to the presenters and the local audience. You can also use this channel to get help in case of viewing problems. All presentations will be recorded and uploaded for off-line watching within a day or so. Needless to say, access to all streams is free of charge. This is all about open source after all :) The primary stream relay is available at http://ccrma.stanford.edu:8080 (located on the west coast of the US). A secondary relay which is preferrable for European users is at http://streamer.stackingdwarves.net (located in Germany). Best regards, the LAC stream team.

11 years, 12 months

changes in gcc

by Emanuel Rumpf

Now ... isn't this a bit frustrating, if scripts stop to work after only 5 years ?? I tried to compile ladspa-sdk, which failed. As I found out, it is due to (nowadays) invalid argument order: failed: $(CC) $(CFLAGS) $(LIBRARIES) -o ../bin/listplugins listplugins.o works: $(CC) $(CFLAGS) -o ../bin/listplugins listplugins.o $(LIBRARIES) gcc 4.6.3

11 years, 12 months

LoMus 2012

by Thierry Coduys

Désolé en cas d’envois multiples / sorry for possible crossposting The dead line for software submission was extended to the April 29th _______________ LoMus 2012 À la recherche des logiciels libres pour la création sonore et intermedia Pour sa quatrième édition, LoMus 2012 s’adresse à tous ceux qui s’aventurent dans le développement de logiciels libres musicaux ou de logiciels libres qui peuvent contribuer au processus de la création musicale. Un prix sera remis aux logiciels qui font preuve non seulement d’innovation, mais notamment d’inventivité face aux enjeux actuels de la création musicale. Calendrier 6 avril 2012 - Appel à soumissions 29 avril 2012 - Date limite de soumission des logiciels 5 mai 2012 - Notification d'acceptation 11 mai 2012 - Remise du prix lors des JIM 2012 Info : http://concours.afim-asso.org/ JIM2012 : http://www.jim2012.be LoMus 2012 In search of open-source software for musical and intermedia creation For its fourth edition, LoMus 2012 invites music and audio open-source software creators to submit original projects that either directly or indirectly contribute to musical creation. A prize will be awarded to open-source sofware that proves to be not only innovatory but also inventive in the present context of music and audio creation. Calendar April 6, 2012 - Call for submissions April 29, 2012 - Submission deadline May 5, 2012 - Admission notification May 11, 2012 - JIM Awards Ceremony Info: http://concours.afim-asso.org/ JIM2012 : http://www.jim2012.be http://www.le-hub.org/

12 years

Re: [LAD] jackmixdesk undefined references

by Ulrich-Lorenz Schlüter

Am 19.04.2012 18:05, schrieb Emanuel Rumpf: > Am 19. April 2012 14:41 schrieb Ulrich-Lorenz Schlüter <audio-mobster(a)gmx.de>: >> /home/uli/workspace/jackmixdesk/trunk/mixdesk_gtk.c:2859: undefined >> reference to `phat_fan_slider_set_value' >> > install libphat-dev package (if ubuntu) > > post output of > > ls /usr/lib/libph* > ls /usr/lib/x86_64-linux-gnu/libph* > > cat /etc/ld.so.conf > cat /etc/ld.so.conf.d/* > I need a resizeable phat knob for my project, jackmixdesk. I want to make my this project available for all users without fumbling, so I don't want a dependency on the development package of phat. Phat dev is even uninstallable for gentoo right now. With best regards Uli

12 years

jackmixdesk undefined references

by Ulrich-Lorenz Schlüter

Hello there. Can these files be a reason for undefined references when compiling? I have to compile them into the binary, because phat from svn makes problems. configure.ac > dnl Require autoconf version >= 2.57 > AC_PREREQ(2.57) > > dnl ############# Initialization > > AC_INIT([jackmixdesk], [0.4], [audio-mobster(a)gmx.de]) > > AC_CONFIG_SRCDIR([mixdesk.c]) > AC_CANONICAL_SYSTEM > > dnl Version 1.7 of automake is recommended > AM_INIT_AUTOMAKE([1.7]) > AM_CONFIG_HEADER([config.h]) > > > dnl ############# Compiler and tools Checks > > AC_PROG_CC > AC_PROG_INSTALL > AC_PROG_LN_S > AC_C_INLINE > > > dnl ############## Library Checks > > AC_CHECK_LIB([m], [sqrt], , [AC_MSG_ERROR(Can't find libm)]) > AC_CHECK_LIB([m], [powf]) > > # Check for libjack (need 0.100.0 for jack_client_open) > PKG_CHECK_MODULES(JACK, jack >= 0.100.0) > > # Check for liblash > PKG_CHECK_MODULES(LASH, lash-1.0) > > # Check for liblo > PKG_CHECK_MODULES(LO, liblo >= 0.23) > > # Check for libxml2 > PKG_CHECK_MODULES(XML2, libxml-2.0 >= 2.6.27) > > # Check for GTK 2.0 > PKG_CHECK_MODULES(GTK, gtk+-2.0, HAVE_GTK="Yes", HAVE_GTK="No") > > # Check for libX11 > PKG_CHECK_MODULES(X11, x11, HAVE_X11="Yes", HAVE_X11="No") > > # Check for libgnomecanvas > PKG_CHECK_MODULES(LIBGNOMECANVAS, libgnomecanvas-2.0, > HAVE_LIBGNOMECANVAS="Yes", HAVE_LIBGNOMECANVAS="No") > > # Check for libidn > PKG_CHECK_MODULES(IDN, libidn, HAVE_IDN="Yes", HAVE_IDN="No") > > > dnl ############## Decide what to build > > BUILD_PROGRAMS="jackmixdesk" > > if test "x$HAVE_GTK" == "xYes" > test "x$HAVE_LIBGNOMECANVAS" == "xYes" > test "x$HAVE_IDN" == "xYes" > test "x$HAVE_X11" == "xYes" > then > BUILD_PROGRAMS="$BUILD_PROGRAMS jackmixdesk_gtk" > else > AC_MSG_WARN([Not building GTK frontend due to missing libraries]) > fi > > AC_SUBST(BUILD_PROGRAMS) > > > > dnl ############## Header Checks > > AC_HEADER_STDC > AC_CHECK_HEADERS([stdlib.h string.h strings.h sys/time.h unistd.h]) > > # Checks for typedefs, structures, and compiler characteristics. > AC_C_CONST > AC_C_INLINE > AC_TYPE_SIZE_T > AC_TYPE_SIGNAL > > # Checks for library functions. > AC_FUNC_MALLOC > > AC_CONFIG_FILES([Makefile]) > > AC_OUTPUT Makefile.am > AUTOMAKE_OPTIONS = foreign > > bin_PROGRAMS = @BUILD_PROGRAMS@ > EXTRA_PROGRAMS = jackmixdesk jackmixdesk_gtk > > jackmixdesk_SOURCES = mixdesk.c db.h > > jackmixdesk_CFLAGS = -Wall -O2 @JACK_CFLAGS@ @LASH_CFLAGS@ @LO_CFLAGS@ > @XML2_CFLAGS@ > > jackmixdesk_LDFLAGS = -lm @JACK_LIBS@ @LASH_LIBS@ @LO_LIBS@ @XML2_LIBS@ > > jackmixdesk_gtk_SOURCES = config.h phatknob.h phatknob.c \ > phatvfanslider.c phathfanslider.c \ > phatkeyboard.c phatpad.h phatvkeyboard.h phatkeyboard.h phatprivate.h \ > phathfanslider.h phathkeyboard.c phatprivate.c phatfanslider.h\ > phathkeyboard.h phatpad.c phatvfanslider.h mixdesk_gtk.c > > jackmixdesk_gtk_CFLAGS = -Wall -O2 @JACK_CFLAGS@ @IDN_CFLAGS@ > @LO_CFLAGS@ \ > @GTK_CFLAGS@ @LIBGNOMECANVAS_CFLAGS@ @LASH_CFLAGS@ @XML2_CFLAGS@ > @X11_CFLAGS@ -DINSTALL_DIR=\"$(datadir)\" > > jackmixdesk_gtk_LDFLAGS = -lm @JACK_LIBS@ @IDN_LIBS@ @LO_LIBS@ > @GTK_LIBS@ @X11_LIBS@ @LIBGNOMECANVAS_LIBS@ @LASH_LIBS@ @XML2_LIBS@ > > pixmapdir =$(datadir)/$(PACKAGE)/pixmaps > pixmap_DATA = knob.png > > licensedir =$(datadir)/doc/$(PACKAGE)-$(VERSION) > license_DATA = COPYING > > readmedir =$(datadir)/doc/$(PACKAGE)-$(VERSION) > readme_DATA = README > > svgdiagramdir =$(datadir)/doc/$(PACKAGE)-$(VERSION) > svgdiagram_DATA = jackmixdesk.svg > > pngdiagramdir =$(datadir)/doc/$(PACKAGE)-$(VERSION) > pngdiagram_DATA = jackmixdesk.png > > tododir =$(datadir)/doc/$(PACKAGE)-$(VERSION) > todo_DATA = TODO > > EXTRA_DIST = autogen.sh TODO doc/jackmixdesk.svg mixdesk_gtk.c > #include "phatfanslider.h" > #include "phatvfanslider.h" > #include "phathfanslider.h" console > /home/uli/workspace/jackmixdesk/trunk/mixdesk_gtk.c:2859: undefined > reference to `phat_fan_slider_set_value' Thanks a lot Uli

12 years

lac repercussions

by Robin Gareus

All right! While LAC is waning, there's a few things we should announce: Most importantly Krzysztof Gawlas won our LAC soundtrack competition. You'll hear his piece as soon as we get the video archive of the conference online which will likely be next week-end. Thanks to everyone who submitted a soundtrack. For all who did not tune into the live-stream of the closing-ceremony: LAC2013 will take place at IEM, Graz; in spring 2013. If you have been at LAC and took picture or video recordings, we'd like to hear from you - please send us a link to lac(a)linuxaudio.org greetings from CCRMA, robin

12 years

B-Control MIDI Implementation

by Jens M Andreasen

An interesting PDF about the undocumented SysEx of BCR/BCF2000 - page 49 was the kicker for me http://home.kpn.nl/f2hmjvandenberg281/download/BC/BC%20MIDI% 20Implementation.pdf -- JMA - Harlequin http://web.comhem.se/mx44turbo/cute/harlequin.mp3

12 years

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Linux-audio-dev April 2012