Linux-audio-dev December 2011

linux-audio-dev@lists.linuxaudio.org

50 participants
39 discussions

by Alfs Kurmis

Hi Experts. I wanna gotta some info about my (mainly) sound files. Samplerate, Bitrate, VBR, Channels, Bits, Samples, Tag info ... and put em all in my C program variables or structure. Seems that MediaInfo support many formats, and it is really good. Can somebody gimme examples how to access sound/media files with MediaInfo API ? What exact #include's must be used ? How to compile ? Evtl. what include and lib dirs should be specified in GCC command line ? gcc -I... -L... -lmediainfo What is difference between /usr/include/MediaInfo and /usr/include/MediaInfoDLL ?? If i wanna use MediaInfo API, but not MediaInfo itself, is it enough when i emerge media-libs/libmediainfo or anyway i must emerge media-libs/libmediainfo AND media-video/mediainfo ? eix mediainfo [I] media-libs/libmediainfo Available versions: 0.7.45 ~0.7.48-r1 ~0.7.49 ~0.7.50 {curl doc mms static-libs} Installed versions: 0.7.45(12:05:57 AM 12/04/2011)(-curl -doc -mms -static-libs) Homepage: http://mediainfo.sourceforge.net/ Description: MediaInfo libraries [I] media-video/mediainfo Available versions: 0.7.45 ~0.7.48 ~0.7.49 ~0.7.50 {curl mms wxwidgets} Installed versions: 0.7.45(12:08:18 AM 12/04/2011)(-curl -mms -wxwidgets) Homepage: http://mediainfo.sourceforge.net Description: MediaInfo supplies technical and tag information about media files I fond this, but it does not help :( http://mediainfo.sourceforge.net/de/Support/SDK/Quick_Start#Example Tnx in advance @ all ----

13 years, 10 months

Santa LACus (your Xmas Linux Audio Conference 2012 reminder)

by Bruno Ruviaro

Hi all, Just a friendly reminder that JANUARY 11 is the deadline for all submissions to the Linux Audio Conference (LAC 2012), which will take place at CCRMA (Stanford, California) in April 2012!http://lac.linuxaudio.org/2012/ Santa LACus wishes a great paper-and-music-submitting holiday to all! Ho, ho. Bruno - - - - - - - - - LAC 2012: the Linux Audio Conference - Call for Participation April 12-15, 2012 @ CCRMA, Stanford University http://lac.linuxaudio.org/2012/ [Apologies for cross-postings] [Please distribute] Online submission of papers, music, installations and workshops is now open! On the website you will find up-to-date instructions, as well as important information about deadlines, travel, lodging, and so on. Read on for more details! We invite submissions of papers addressing all areas of audio processing based on Linux and open source software. Papers can focus on technical, artistic or scientific issues and can target developers or users. We are also looking for music that has been produced or composed entirely or mostly using Linux and other Open Source music software. The Deadline for all submissions is January 11th, 2012 The Linux Audio Conference (LAC) is an international conference that brings together musicians, sound artists, software developers and researchers, working with Linux as an open, stable, professional platform for audio and media research and music production. LAC includes paper sessions, workshops, and a diverse program of electronic music. The upcoming 2012 conference will be hosted at CCRMA, Stanford University, on April 12-15. The Center for Computer Research in Music and Acoustics (CCRMA) at Stanford University is a multi-disciplinary facility where composers and researchers work together using computer-based technology both as an artistic medium and as a research tool. CCRMA has been using and developing Linux as an audio platform since 1997. http://ccrma.stanford.edu Stanford University is located in the heart of Silicon Valley, about one hour south of San Francisco, California. This is the first time LAC will take place in the United States. http://www.stanford.edu We look forward to seeing you at Stanford in April! Sincerely, The LAC 2012 Organizing Team

13 years, 10 months

ANN: pd-faust 0.1

by Albert Graef

pd-faust is my latest stab at making the integration of Pd and Faust as simple and painless as possible. For those of you who've used my utilities for Faust and Pd before, pd-faust integrates the functionality of faust2pd and pure-faust into a collection of Pd objects written in the Pure programming language. It also sports the following major improvements over faust2pd: - Reload Faust modules at runtime and have the Pd GUI of the Faust dsp regenerated automatically and instantly. - The metadata in Faust programs is interpreted to adjust the GUI layout in a faust2pd-compatible fashion. - MIDI/OSC controller mappings are provided for the 'midi' and 'osc' metadata tags in the Faust source. - Built-in MIDI sequencer and OSC recorder which syncs MIDI and OSC playback and provides an OSC-based controller automation facility for all Faust dsps in a Pd patch. So in other words it's the Swiss army knife for Faust development in Pd. ;-) If you're into Faust and Pd, I hope that you'll find it useful. Bug reports and other feedback are appreciated. A brief overview is available here: http://code.google.com/p/pure-lang/wiki/Addons#pd-faust The obligatory screenshot: http://wiki.pure-lang.googlecode.com/hg/pd-faust.png Detailed documentation (including installation information): http://docs.pure-lang.googlecode.com/hg/pd-faust.html pd-faust is compiled to a native Pd object library which can be loaded with Pd's -lib option as usual. Note that besides Pd, Faust and pd-faust itself you'll also need the Pure interpreter and a couple of Pure addon packages to build and run this software. Please check the documentation linked to above for details. All the Pure-related downloads can be found on the Pure website: http://pure-lang.googlecode.com For your convenience, here are the direct download links for the required packages from the Pure project (source tarballs): http://pure-lang.googlecode.com/files/pure-0.50.tar.gz http://pure-lang.googlecode.com/files/pd-faust-0.1.tar.gz http://pure-lang.googlecode.com/files/pd-pure-0.15.tar.gz http://pure-lang.googlecode.com/files/pure-faust-0.6.tar.gz http://pure-lang.googlecode.com/files/pure-stldict-0.2.tar.gz You'll also need a recent version of Pd (0.43 has been tested) and Faust from git (0.9.45 and 2.0.a3 are both known to work fine). Happy holidays, Albert P.S.: Sorry for the excessive cross-posting, but the nature of this project which interfaces between three different environments, each with their own communities, made this seem appropriate. -- Dr. Albert Gr"af Dept. of Music-Informatics, University of Mainz, Germany Email: Dr.Graef(a)t-online.de, ag(a)muwiinfa.geschichte.uni-mainz.de WWW: http://www.musikinformatik.uni-mainz.de/ag

13 years, 10 months

Re: [LAD] FFADO midi ports

by harryhaaren＠gmail.com

On , thijs van severen <thijsvanseveren(a)gmail.com> wrote: > any ideas ? Yup! Tell jack to not use ALSA raw midi, use SEQ instead. QJackCtl->Setup dialog, bottom left is "MIDI Driver", play with that..? -Harry

13 years, 10 months

Code drops: ivory and proaudio-sound-control

by Gabriel M. Beddingfield

Friends, In the course of the year I did a couple of applications that I'm pretty proud of. For some good reasons, I've withheld releasing them publicly until now: Ivory - a multi-touch, virtual MIDI keyboard controller This was originally intended as a proof of concept, but was so much darn fun that I pushed it to a beta-level application. I don't recall if it works with a mouse or not... but it's not nearly as cool with a mouse. http://gitorious.org/gabrbedd/ivory proaudio-sound-control - one-stop shopping for Jack and Alsa control This is a mash-up of QJackCtl and QasMixer. It discards the GIMP-like multi-window interface of QJackCtl (which is a major pain on a mobile device). It also adds direct access to hardware mixer controls by re-casting QasMixer as a widget inside QJackCtl. Say way you want about the visual style of QasMixer, but it's the most complete GUI interface to ALSA I've found. https://gitorious.org/gabrbedd/proaudio-sound-control CAVEAT EMPTOR: This code is released AS-IS, and I have no plans to maintain them. It's released in the hope that someone can benefit from them.[1] DEMO: There's a video here that demos these on the Indamixx 2 (at the MeeGo conference last spring) http://www.engadget.com/2011/05/25/meego-conference-2011-sights-and-sounds-… If you're in a hurry, fast-forward to about 1:13. It mostly demos Ivory... but you also get brief views of proaudio-sound-control while Tony is switching windows. -gabriel [1] For proaudio-sound-control... if someone decides to continue this concept, you'll want to have a chat with me first. It works, but is implemented in an unmaintainable way.

13 years, 10 months

[ANN] Qtractor 0.5.2 - The Charlie X-ray gets through!

by Rui Capela

Aha, TYOQA is finally coming to an end. Are we getting 'pre-beta' status? No way. Not there yet. And quite frankly, it will never be. As most of you who know my stance on this alpha-and-omega-thing, may well rejoice: this is alphaaaaa!... Now, let's get some more cynicism to the extreme, an activity that I've been criticized more than often: the previous dot release nailed the day when a bitten-fruit boss passed away. I am no prophet, but could it be that we're witnessing the dawn of a brand 'new-age passover'? I wonder what will happen this time. Let's get over it, or better said, through it! Time will tell or else, never mind. Qtractor 0.5.2 (charlie x-ray) breaks out free! This solstice release comes with a long overdue loop-recording/takes 'featuritis' breakout. As a matter of fact, it is actually the relevant feature being introduced this season. BTW, happy holidays--before's too late ;) Well, I've tried to do something barely useful, at least for the lone, one-(wo)man-band and over-dubber, that is. There's still a point on the old motto, remember? That 'techno-boy(gal)-bedroom studio'? Now I think he/she can have a guitar ;) In other words, I'm not really sure this is going to be the best user-interface or paradigm, model, whatever. You tell me :) Release highlights: * Loop-recording/takes implementation (NEW) * Default session file format option (NEW) * LV2 State extension support (NEW) * Options dialog re-arrangement (FIX) * Improved in-flight recording display (FIX) * MIDI clip file revision numbering (FIX) * Clip "Unlink" option (NEW) Cheers! Website: http://qtractor.sourceforge.net Project page: http://sourceforge.net/projects/qtractor Downloads: - source tarball: http://downloads.sourceforge.net/qtractor/qtractor-0.5.2.tar.gz - source package (openSUSE 11.4): http://downloads.sourceforge.net/qtractor/qtractor-0.5.2-1.rncbc.suse121.sr… - binary packages (openSUSE 11.4): http://downloads.sourceforge.net/qtractor/qtractor-0.5.2-1.rncbc.suse121.i5… http://downloads.sourceforge.net/qtractor/qtractor-0.5.2-1.rncbc.suse121.x8… - one upon the time, eons ago: user manual: http://downloads.sourceforge.net/qtractor/qtractor-0.3.0-user-manual.pdf Weblog (upstream support): http://www.rncbc.org License: Qtractor is free, open-source software, distributed under the terms of the GNU General Public License (GPL) version 2 or later. Change-log: - Fixed a probably old lurking destructive bug, which was incidental to when an invalid or non audio file is imported, intentionally or by mistake, into new or existing audio clips (eg. importing a MIDI file where an audio file is expected). - Force audio file closing to occur on the very same disk-write (sync)thread, possibly mitigating an old random crash issue lurking in the vorbis reference encoder (recording) re. the non thread-safetyness of the vorbis_analysis() final call. - Fixed extraordinary shadow-playback of audio clips which extent were longer than the respective audio file length. - Default session file format option now promoted (see View/Options.../General/Session) in the way of whether file suffix gets honored upon session open or save (.qtr, .qts or .qtz). This brand new option also applies for default state file format on a JACK-session salvage context. - The View/Options... (aka. user preferences) dialog sees a new arranjement in layout, with some options moving into this brand new tab page called General. - LV2 State extension support has been added, which shall replace old LV2 Persist extension interface in the near future. It also replaces the LV2 Files extension from now on (thanks to Dave Robillard). - Dirty MIDI clips are now auto-saved when MIDI track properties get changed through its own dialog. - Fixed one probable too old crash when cancelling a new/add track dialog. - MIDI SysEx event list editing is now fixed. - Once again, make sure all recorded clips start and end at the very same position when multiple track recording is turned on/off, while playback is still rolling. - Fixed Makefile.in handling installation directories to the configure script eg. --datadir, --localedir. - Possible attempt to improve in-flight recording clip display, especially when looping and MIDI clips are involved. - MIDI clip revision (re)numbering paranoia has been improved as much to avoid MIDI file clashes as much as possible while editing multiple MIDI clips which reference the same SMF and track/channel. - Creating new or updating existing buses with exact same names of any current dedicated inputs/outputs (which are implemented as special covert buses) is now disallowed (preventing bug #3430406). - Loop-recording/takes functionality is now ready for the masses and accessible from brand new Clip/Take menu (Select, First, Previous, Next, Last, Reset and Range...; the latter is actually being provided as bonus feature :) as to fold any given clip into so-called takes, simulating loop-recording mode over an arbitrary range). - Loop-recording/takes infrastructure integration is sneaking in: all clips recorded under a loop/cycle range may now get split (folded) into one or more so-called takes. A new option is now provided, as to select which take is about to retain after the recording ends, either the First or the Last one. Just turn this mode off (None) and keep with the old recording behavior, where clips are laid out unfolded through the timeline, as usual (see menu View/Options.../Display/Loop recording mode). - Improved robustness in face of disabled audio buses when global maximum number of JACK (audio) ports is surpassed (mitigating bug #3421911). - Improved single-track clip selection status logic (possibly fixing bug #3419141). - Clip/Unlink action is now available for detaching linked/ref-counted MIDI clips, renaming and saving into auto-incremental SMF filenames. - Temporary session archive directory now (pre)fixed whith program name (eg. /tmp/qtractor). - Fixed VST GUI editor window title on first show. - Fixed build for ancient VST-SDK 2.3 (32bit only). Enjoy! -- rncbc aka Rui Nuno Capela rncbc(a)rncbc.org

13 years, 10 months

ALAC codec being added to libsndfile

by Erik de Castro Lopo

Hi all, Just an FYI. I am in the process of adding support for Apple's lossless Audio Codec (ALAC) [0] to libsndfile. Should be done my the end of the weekend. Cheers, Erik [0] http://alac.macosforge.org/ -- ---------------------------------------------------------------------- Erik de Castro Lopo http://www.mega-nerd.com/

13 years, 10 months

More midi related questions

by gene heskett

Greetings all; Still trying to sort reasons why a java app can't access the midi synth in my sound card. From an aplaymidi -l: [root@coyote modprobe.d]# aplaymidi -l Port Client name Port name 14:0 Midi Through Midi Through Port-0 16:0 SB Audigy 2 Value [SB0400] Audigy MPU-401 (UART) 16:32 SB Audigy 2 Value [SB0400] Audigy MPU-401 #2 17:0 Emu10k1 WaveTable Emu10k1 Port 0 17:1 Emu10k1 WaveTable Emu10k1 Port 1 17:2 Emu10k1 WaveTable Emu10k1 Port 2 17:3 Emu10k1 WaveTable Emu10k1 Port 3 Can I make the inference that a .mid file sent to 14:0 should find its way to one of the 17:n ports? It only works if I -s to 17:0(thru 3) Java, by its scanning methods, finds a huge list of ports, but only the semi-broken, internal to java, synth actually makes a noise. If I switch to amidi -l, the list is a bit shorter: Dir Device Name IO hw:0,0 Audigy MPU-401 (UART) IO hw:0,1 Audigy MPU-401 #2 IO hw:0,2 Emu10k1 Synth MIDI (16 subdevices) IO hw:0,3 Emu10k1 Synth MIDI (16 subdevices) but sending a midi file to the latter pair, while taking the normal play time for the file, is also silent. KMix gain is turned up quite a ways. From the lengthy output of amixer contents: numid=7,iface=MIXER,name='Synth Playback Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=100,step=0 : values=72,72 | dBscale-min=-40.00dB,step=0.40dB,mute=1 But since aplaymidi works, I'm confused, does mute=1 mean it is live, not off? When java scans for synths, I get at the end of the listing, a realtime_synth as device #68 in base 0. But I haven't a clue if that is the audigy2's synths, but its silent in any event. The target here is to somehow link this so the java system can actually use the hardware synths in an Audigy2 Value card. But any attempt to send to a (hw0:0) thru (hw0:3) path is silent, however aplaymidi always uses the same amount of time to send the file. Suggestions of what to check next?, please as I am lost in whatever translations actually take place because there seems to be 2 different methods of accessing a device and I can't find how they correlate. Thank you. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> "The Amiga is the only personal computer where you can run a multitasking operating system and get realtime performance, out of the box." -- Peter da Silva

13 years, 10 months

easiest way to serialize messages for sending over a ringbuffer?

by Iain Duncan

Hi everyone, I have a fairly simple, known size message format, it's just five numbers, either ints or floats, wrapped in a structure. I guess I need some kind of serialization to send this over a jack ringbuffer, but I've zero experience with serialization in C++. Can anyone tell me what the easiest or best way to do this is? Should I use the boost serialization library? FWIW, I would like to eventually add osc messaging in too if that affects the best choice. Thanks! Iain

13 years, 10 months

[LAA] gxtuner-1.6 update

by hermann

Hello A update release of gxtuner is available a simple, small and lightweight guitar/bass tuner for jack (a break out of the guitarix tuner module) This update is for those, who's like to use a simple tuner with a analogue style like interface It resolve some user requests and primary added some more command-line options. Also it added all configuration options to be restored by the jack session manager. gxtuner-1.6 changes: * add command-line option reference pitch control * add command-line option threshold control * add command-line option window size * add command-line option window position * add all options to be restored by jack session manager gxtuner comes with a analogue like, full arbitrary scaling interface (scale), show the tune, the octave and the accumulated frequency in Hz, gxtuner comes with full jack-session support. gxtuner use a equal-tempered scale based on A4 = 440 Hz (427Hz <-> 453Hz) gxtuner is licensed under the GPL. for more information please read the included README file. get it here: http://sourceforge.net/projects/guitarix/files/gxtuner/ direct link http://sourceforge.net/projects/guitarix/files/gxtuner/gxtuner-1.6.tar.bz2/… have fun Guitarix developers _______________________________________________ Linux-audio-announce mailing list Linux-audio-announce(a)lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-announce

13 years, 10 months

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Linux-audio-dev December 2011