[LAA] Qtractor 0.7.1 - The Meson Dope beta release

Rui Nuno Capela rncbc at rncbc.org
Fri Oct 9 17:42:43 UTC 2015


   Here's to all southerners for whom the so called Summer'15 didn't 
made much sense...

   Beg your pardon yet and again, but it's that time of year when 
grapefruit is about ripening, pretty fast and maybe late, at least on 
the northern hemisphere. No worries: harvesting has already been carried 
away. So it's your call now, wether it makes for ugly bad wine or, 
pretty good vinegar...

   "Quickly, bring me a beaker of wine so that I may wet my mind and say 
something clever." --Aristophanes

never mind,

   Qtractor 0.7.1 (meson dope beta) is released!

   Now, for the clueless:

   Qtractor [1] is an audio/MIDI multi-track sequencer application 
written in C++ with the Qt framework [2]. Target platform is Linux, 
where the Jack Audio Connection Kit (JACK [3]) for audio and the 
Advanced Linux Sound Architecture (ALSA [4]) for MIDI are the main 
infrastructures to evolve as a fairly-featured Linux desktop audio 
workstation GUI, specially dedicated to the personal home-studio.

   And for the ones who can aptly tell a TL;DR apart from a hangover:

   Besides the incidental bug-fixes and proverbial business-as-usual 
stance for this dot release, the most probable and hopefully significant 
news about it, is that this will the last to build against Qt4 by 
default. The time has come to move on up to Qt5. Remember that a Qt5 
build is and has been possible already for ages now but somewhat 
relegated on a subpar status due to the once lack of support for all 
non-Qt5 LV2 plug-ins GUIs out there. Not anymore! Starting from this 
very release onwards there's this so called <em>native</em> LV2 GTK2 and 
X11 UI support on Qt5. Also thriving, drobilla's libsuil is being 
updated to par just that as well. So things are all aligning up nigh.

   A special note to the voluntary packager: if you choose, for any 
reason you may find commendable, to build, package and distribute a Qt5 
build (via ./configure --enable-qt5 ...) please be sure that every LV2 
plug-ins around that take Qt as its UI framework are also build, 
packaged and distributed on the same premises, otherwise they might just 
fail and crash Qtractor [1] on show. Among those are of course the one 
comprised by the 'Vee One Suite', namely synthv1 [9], samplv1 [10] and 
drumkv1 [11], of course.

   Also as a(nother) side note: It has been for quite some time there's 
an alternate github.com [7] repository which is kept in sync with the 
sf.net one [8]. However, this doesn't mean that the Qtractor [1] project 
is about to migrate to brand new hosting whatsoever: the original 
upstream source code repository is, will be, as ever was, always kept 
somewhere else still in this world and universe. It's a Git [12] world 
out nowadays and as the mottos says, --everything-is-local, 
--distributed-is-the-new-centralized ;)



Project page:


- source tarball:

- source package (openSUSE 13.2):

- binary packages (openSUSE 13.2):

- wiki (help wanted!):

Weblog (upstream support):

   Qtractor [1] is free, open-source Linux Audio [5] software, 
distributed under the terms of the GNU General Public License (GPL [6]) 
version 2 or later.

- Fixed an ages old MIDI track/channel instrument mapping (bank, 
program) issue that prevented normal all-shut-up messages from being 
sent to MIDI output buses/ports on playback stop.
- Messages standard output capture has been improved again, now in both 
ways a non-blocking pipe may get.
- Fixed port on MIDI 14-bit controllers input caching.
- Fixed false value readings on the MIDI clip editor (aka. piano-roll) 
tool-tips, when dragging a note velocity or controller value outside the 
acceptable nominal range (eg. 0-127).
- Added LV2_BUF_SIZE__nominalBlockLength option support (patch by falktx 
aka. Filipe Coelho, thanks).
- Fixed wrong initial tempo/time-signature display when session is 
loaded from command line.
- LV2 plug-in UI GTK2 and X11 in Qt5 host native support added.
- Transport/Auto Backward feature now honoring (auto return) to same 
current location precedence as Transport/Backward.
- Single/unique application instance control adapted to Qt5/X11 (cf. 
configure --enable-xunique).
- MIDI Tools/Transpose, Resize duration display format (frames, time or 
BBT) have been fixed.
- Build fix for Qt5.5 (patch by KaOS, thanks).
- MIDI Tools/Quantize et al. are tentatively being corrected to take 
event times as relative to THE beginning of session, instead of MIDI 
clip start location.


[1]  Qtractor - An audio/MIDI multi-track sequencer

[2]  Qt framework, C++ class library and tools for
      cross-platform application and UI development

[3]  JACK Audio Connection Kit

[4]  ALSA, Advanced Linux Sound Architecture

[5]  Linux Audio consortium of libre software for audio-related work

[6]  GPL - GNU General Public License

[7]  Qtractor Git repository on github.com

[8]  Qtractor Git repository on sourceforge.net

[9]  synthv1 - an old-school polyphonic synthesizer

[10] samplv1 - an old-school polyphonic sampler

[11] drumkv1 - an old-school drum-kit sampler

[12] Git distributed version control system

See also:

Enjoy && have fun.
rncbc aka. Rui Nuno Capela

More information about the Linux-audio-announce mailing list