QjackCtl - JACK Audio Connection Tookit

Downloads and Change Log

You can browse all files available for download, including binary packages, at QjackCtl Files on SourceForge.net.

Latest release

2024-10-29 - An Autumn'24 Release.
qjackctl-1.0.3.tar.gz

Long missing D-Bus method slot added: "reset" (dbus-send --system / org.rncbc.qjackctl.reset).
Graph: Node reference positioning changed to the top-left corner, improving the base snapping-to-grid perception.
Prepping up next development cycle (Qt >= 6.8)

Previous release

2024-09-17 - An End-of-Summer'24 Release.
qjackctl-1.0.2.tar.gz

Graph: when visible the thumb-view may now be drag-moved over to a different corner position anytime.
Session: introducing new Save session name/directory dialog.
Connections: connector line colors are now uniquely mapped on a (readable/output) client name basis.

Older releases

2024-08-01 - A Summer'24 Release.
qjackctl-1.0.1.tar.gz

Graph: thumb-view repositions and resizes immediately when visible.
Graph: Implement patchbay node search functionality: adds a floating text-entry field, which appears when typing in the canvas, selecting nodes that contains the typed text (maybe regular expression).
Graph: fixed a potential use-after-free issue on canvas nodes refresh and recycle.

2024-06-19 - An Unthinkable Release.
qjackctl-1.0.0.tar.gz

Making up the unthinkable (aka. v1.0.0)
Cancel button option added to close to system-tray icon message.
Graph: Introducing thumbview context-menu.

2024-05-01 - A Spring'24 Release Candidate 2.
qjackctl-0.9.91.tar.gz

Prepping the unthinkable (aka. v1.0.0-rc2)
Graph: Introducing the View/Thumbview option as a whole graph thumbnail overview helper.
Updated to latest framework level (Qt >= 6.7)

2024-04-10 - A Spring'24 Release Candidate.
qjackctl-0.9.90.tar.gz

Prepping the unthinkable (aka. v1.0.0-rc1)
Custom color themes are now file based (*.conf); legacy still preserved ntl.
Old generic "Portuguese" translation (pt) has been corrected to the more proper "Portuguese (Brazil)" locale (pt_BR).
Simplified and shortened the main window title.

2024-01-24 - A Winter'24 Release.
qjackctl-0.9.13.tar.gz

Graph: Make the main canvas background to mid-gray, when on non-dark color themes.
Turkish (tr) translation added (by Orkun Arapoglu, thanks).
Updated copyright headers into the New Year (2024).

2023-09-09 - An End-of-Summer'23 Release.
qjackctl-0.9.12.tar.gz

Setup: disable Settings parameters altogether, except frames/period (aka. buffer-size) if running in the so called 'Active' pure-client mode (eg. under PipeWire's pw-jack substitution).
Connections: Fixed an old JACK client/ports aliases malfunction, hopefully.
Graph: Ctrl+left or middle-button click-dragging for panning, is now a lot smoother, hopefully.
Graph: Click-dragging with the mouse middle-button is now used for panning only, not to start a selection anymore.
Preppings to next development cycle (Qt >= 6.6)

2023-06-01 - A Spring'23 Release.
qjackctl-0.9.11.tar.gz

Graph: Soft incremental bounds constraints now imposed to all new and old nodes positioning.
Prepping into the next development cycle (with Qt >= 6.5).

2023-03-23 - An Early-Spring'23 Release.
qjackctl-0.9.10.tar.gz

Setup: revert to previous settings when dismissing the dialog.
Graph: Attempt to make port labels as short as possible.
Graph: introducing touch pinch-gesture for zooming.

2022-12-28 - An End-of-Year'22 Release.
qjackctl-0.9.9.tar.gz

Graph: whether to draw connectors through or around nodes is a new user preference option (cf. View > Connect Through Nodes).
Graph: Allow middle mouse button for grabbing and dragging the main canvas.
Make up visual immediate feedback connectlons.

2022-10-03 - An Early-Autumn'22 Release.
qjackctl-0.9.8.tar.gz

Graph: View / Repel Overlapping Nodes option added.
Avoid nagging on D-BUS error messsage windows (or bubbles) when trying to start in pure JACK client mode (Active).
Add current system user-name to the singleton/unique application instance identifier.
Graph/Connect and Disconnect keyboard shortcuts added to existing [Ins] and [Del], as [Ctrl+C] and [Ctrl+D] respectively; also added [F2] as brand new keyboard shortcut for Edit/Rename...

2022-04-02 - A Spring'22 Release.
qjackctl-0.9.7.tar.gz

Main application icon is now presented in scalable format (SVG).
Migrated command line parsing to QCommandLineParser/Option (Qt >= 5.2)
Fixed translations path to be relative to application runtime.

2022-01-09 - A Winter'22 Release.
qjackctl-0.9.6.tar.gz

Dropped autotools (autoconf, automake, etc.) build system.
Limit or mitigate fast auto-scrolling when moving Graph client nodes off the viewport.
Whenever possible, adopt the previous named default preset, when starting the JACK-server on premises.
Conditional fix to MacOSX and FreeBSD builds.

2021-10-05 - An Autumn'21 Release.
qjackctl-0.9.5.tar.gz

Streamlined Windows and MacOSX deliverables (by Alexis Murzeau).
Korean (ko) translation added (by JungHee Lee).

2021-07-04 - An Early-Summer'21 Release.
qjackctl-0.9.4.tar.gz

All builds default to Qt6 (Qt >= 6.1) where available.
CMake is now the official build system.

2021-05-11 - A Spring'21 Release.
qjackctl-0.9.3.tar.gz

Graph connection lines drop-shadow eye-candy has been optimized, improving a lot on moving highly-connected nodes, especially the ones with plenty of backward-curved connections.
All packaging builds switching to CMake.
Fixed default preset/aliases switching and reloading when entering pure-client mode (ie. "Active" status).

2021-03-14 - An End-of-Winter'21 Release.
qjackctl-0.9.2.tar.gz

Clock source, Self-connect mode and Server synchronous mode options are now always enabled on the Setup / Settings dialog, although only available or effective to jackd2.
Graph Disconnect now applies to selected connections or nodes only.

2021-02-07 - A Winter'21 Release.
qjackctl-0.9.1.tar.gz

Graph Disconnect now applies to all selected ports and connections.
Main window is now freely resizable, while keeping all the buttons stretched to the same aspect ratio.
Warning to confirm application close is now back in business when functioning as client only (Active).
Graph items are automatically raised when created or high-lighted (incremental z-value).
Add a little but straight horizontal line-gap to the Graph connections.
Customize the Graph zoom slider widget to reset upon mouse middle-button click.
Add Clear preset button to Setup dialog.
Use default values for most preset parameters: sample rate, frames/period (aka. buffer-size), periods/buffer, realtime priority, port maximum, client timeout, word length, wait time, channel maximum.

2020-12-17 - A Winter'20 Release.
qjackctl-0.9.0.tar.gz

List only available backend drivers when JACK D-BUS is enabled.
Graph client-name / node-title aliases persistence have been hopefully fixed.
Get rid of those "JACK has crashed" red-herrings from latest Windows(tm) builds.
Early fixing to build for Qt >= 6.0.0 and comply with C++17 standard.

2020-07-31 - A Summer'20 Release.
qjackctl-0.6.3.tar.gz

Clock source and Self connect restriction options have been added to Setup / Settings / Advanced (only enabled when JACK D-BUS control interface is in effect).
Added preliminary support for JACK CV signal-type ports and JACK OSC event-type ports (Graph only).
Left-clicking on the system-tray icon now simply toggles the main widget visibility, disregarding if already hidden undercover to other windows.
Graph nodes and ports are now presented with some gradient background.
Fixed Setup dialog Cancel (or close) behavior when Settings > Parameters > Frames/Period (aka. buffer- size) it's the only setting that's changed.
Early fixing to build for Qt >= 5.15.0.

2020-03-24 - A Spring'20 Release.
qjackctl-0.6.2.tar.gz

A scalable (.svg) icon version has been added.
Make man page compression reproducible (after request by Jelle van der Waa, while on the Vee-Ones, thanks).
Ditching deprecated QTime methods for QElapsedTimer's (in compliance to Qt >= 5.14.0).
Bumped copyright headers into the New Year (2020).

2019-12-22 - The Winter'19 Release.
qjackctl-0.6.1.tar.gz

Custom color (palette) theme editor introduced; color (palette) theme changes are now effective immediately, except on default.
Second attempt to fix the yet non-official though CMake build configuration.
When using autotools and ./configure --with-qt=..., it is also necessary to adjust the PKG_CONFIG_PATH environment variable (after a merge request by plcl aka. Pedro López-Cabanillas, while on qmidinet, thanks).

2019-10-17 - An Autumn'19 Release.
qjackctl-0.6.0.tar.gz

Graph: avoid self-connecting over their own ports when client nodes are selected as a whole group; also try to match port-types in a oderly fashion when connecting multiple selected ports.
Changing current JACK buffer size from Setup dialog (cf. Settings / Frames/Period) may now take effect just immediately ;)
An 'Apply' button as been added to the Setup dialog; ask whether to restart the JACK audio server, if any settings are changed.
Added alternate yet non-official CMake build option.
Fix HiDPI display screen effective support (Qt >= 5.6).
Command line arguments (--start, --preset=[label] and --active-patchbay=[path]) are passed and take effect on the current singleton/unique application instance, when enabled and already running.
System-tray icon context menu has been refactored to be exactly the same as the main-window context menu that is re-instantiated on demand.
Make sure compiler flags comply to c++11 as standard.

2019-07-12 - A Summer'19 Release.
qjackctl-0.5.9.tar.gz

Updated for the newer Qt5 translation tools (>= 5.13).
Configure updated to check for qtchooser availability.

2019-05-25 - A Spring'19 Release.
qjackctl-0.5.8.tar.gz

When enabled the current default preset settings are now read from the last known JACK D-BUS configuration.
Minor update to Debian packaging control file.
Removed all the remaining leftovers of old pre-FFADO 'freebob' driver support.

2019-04-11 - A Spring-Break Release.
qjackctl-0.5.7.tar.gz

Graph node and port title renaming and nodes position move changes are now undo/redo-able.
Graph client and port title in-place renaming is now integrated to native aliases and JACK metadata (aka. pretty-names).
Refactored all native client/port name aliases.
Re-defined all main application UNIX signal handling.

2019-03-11 - Pre-LAC2019 Release Frenzy.
qjackctl-0.5.6.tar.gz

Refactored all singleton/unique application instance setup logic away from X11/Xcb hackery.
At last, JACK freewheel mode is now being detected as to postpone any active patchbay scans as much as possible.
Removed old pre-FFADO 'freebob' driver support.
HiDPI display screen support (Qt >= 5.6).
Graph port temporary highlighting while hovering, if and only if connecting ports of same type and complementary modes.
Bumped copyright headers into the New Year (2019).

2018-11-23 - A Black-Friday'18 Release.
qjackctl-0.5.5.tar.gz

Old deprecated Qt4 build support is no more.
Graph port sort options added as View / Sort menu.
System tray options now subject to current desktop environment availability.
Also disable Setup / Misc / Other / Save JACK server configuration to (.jackdrc) when JACK D-Bus interface is enabled.
Whether to use server synchronous mode option added to Setup / Settings / Parameters (only applied when JACK D-BUS interface is enabled).
Disable some Setup / Settings / Advanced parameters when JACK D-Bus interface is enabled and vice-versa.
Attempt to power-cycle JACK D-Bus service on demand;
Marked as probably useless anyway, old "H/W Monitor" option (-H) is now being ditched from Setup / Settings / Advanced tab.

2018-09-24 - An Early Autumn'18 Release.
qjackctl-0.5.4.tar.gz

Graph port-type colors are now configurable (cf. menu View > Colors.
Make Graph nodes (ie. client boxes) transparent for yet some eye-candiness ;). Also keep the (Graph) current selection across port (dis)connections.
Drawing patchbay connector lines as (bezier) curves is now a difinitive and fixed feature (as long as no more remains from the so called "Cambric explosion era" are still lurking in there).
AppStream metadata updated to be the most compliant with latest freedesktop.org specification and recommendation.
Graph auto-layout improvement for brand new node clients.
Avoid showing setup warning when no server settings have changed.
Fixed JACK D-Bus settings for MIDI driver parameter.

2018-07-22 - A Summer'18 Release.
qjackctl-0.5.3.tar.gz

Portuguese (pt) translation added (by Heitor Rocha).
AppData/AppStream metadata is now settled under an all permisssive license (FSFAP).
Improved Graph rubberband add (Shift) and toggle (Ctrl) multiple (de)selections.
Added user preference option: Setup / Misc / Buttons / Replace Connections with Graph button (on main window).
Added a zoom slider control to the Graph view status bar.

2018-05-27 - Pre-LAC2018 release frenzy hotfix.
qjackctl-0.5.2.tar.gz

Respect ALSA Sequencer support option also on Graph view.
Regression to new Graph node/ports sorting comparator; also fixed multiple and many port removals, most probably causing it to crash due to double-free/delete potential.
Fixed the automatic aggregation of new Graph client nodes that are split as either input or output only (ie. system, terminal, physical or otherwise non-duplex nodes).
Added View/Zoom Range mode option to Graph tool.

2018-05-21 - Pre-LAC2018 release frenzy.
qjackctl-0.5.1.tar.gz

Half a decade later, recent new custom entries may now get removed from Session Infra-client list.
Some rather old, better said "Cambric explosion era", user preference options have been ditched altogether: Display / Time Format; Display / Shiny glass light effect; Display / Connections/Draw connections and patchbay lines as Bezier curves; Misc/Configure as temporary server.
A brand new and way long overdue connections Graph widget is finally introduced, only to be accessible through the context menu at this time.
Extended multi-selection is now supported on all Connections client/port lists, allowing for multiple (dis)connections at once.
Disable singleton/unique application instance setup logic when the display server platform is not X11.
A little hardening on the configure (autoconf) macro side.

2017-12-16 - End of Autumn'17 release.
qjackctl-0.5.0.tar.gz

Current preset is always taken into account if ever changes while the Setup dialog is hidden (eg. via context menu).
Desktop entry specification file is now finally independent from build/configure template chains.
Updated target path for freedesktop.org's AppStream metainfo file (formerly AppData).

2017-04-27 - Pre-LAC2017 release frenzy.
qjackctl-0.4.5.tar.gz

On some desktop-shells, the system tray icon blinking on XRUN ocurrences, have been found responsible to excessive CPU usage, an "eye-candy" effect which is now optional as far as Setup/Display/Blink server mode indicator goes.
Added French man page (by Olivier Humbert, thanks).
Make builds reproducible byte for byte, by getting rid of the configure build date and time stamps.

2016-11-14 - A Fall'16 release.
qjackctl-0.4.4.tar.gz

Fixed an early crash when the singleton/unique application instance setup option is turned off.
Almost complete overhaul on the configure script command line options, wrt. installation directories specification, eg. --prefix, --bindir, --libdir, --datadir and --mandir.

2016-09-14 - End of Summer'16 release.
qjackctl-0.4.3.tar.gz

Fix build error caused by variable length array.
Fix some tooltip spelling (patch by Jaromír Mikeš, thanks).
Translation (not) fix for the default server name "(default)".
Old "Start minimized to system tray" option returns to setup.
Dropped the --enable-qt5 from configure as found redundant given that's the build default anyway (suggestion by Guido Scholz, while for Qtractor, thanks).
Late again French (fr) translation update (by Olivier Humbert aka. trebmuh, thanks).

2016-04-05 - Spring'16 release frenzy.
qjackctl-0.4.2.tar.gz

Added a brand new "Enable JACK D-BUS interface" option, split from the old common "Enable D-BUS interface" setup option which now refers to its own self D-BUS interface exclusively.
Dropped old "Start minimized to system tray" option from setup.
Add double-click action (toggle start/stop) to systray (a pull request by Joel Moberg, thanks).
Added application keywords to freedesktop.org's AppData.
System-tray icon context menu has been fixed/hacked to show up again on Plasma 5 (aka. KDE5) notification status area.
Switched column entries in the unified interface device combo- box to make it work for macosx/coreaudio again.
Blind fix to a FTBFS on macosx/coreaudio platforms, a leftover from the unified interface device selection combo-box inception, almost two years ago.
Prevent x11extras module from use on non-X11/Unix plaforms.
Late French (fr) translation update (by Olivier Humbert, thanks).

2015-10-28 - A Fall'15 release.
qjackctl-0.4.1.tar.gz

Probing portaudio audio device in a separate thread (by Kjetil Matheussen, thanks).
Messages standard output capture has been improved again, now in both ways a non-blocking pipe may get.
Regression fix for invalid system-tray icon dimensions reported by some desktop environment frameworks.
New hi-res application icon (by Uttrup Renzel, Max Christian Pohle, thanks).
System tray icon red background now blinks when a XRUN occurs.
Desktop environment session shutdown/logout management has been also adapted to Qt5 framework.
Single/unique application instance control adapted to Qt5/X11.
Prefer Qt5 over Qt4 by default with configure script.
Overrideable tooltips with latency info (re. Connections JACK client/ports: patch by Xavier Mendez, thanks).
Complete rewrite of Qt4 vs. Qt5 configure builds.
French (fr) translation update (by Olivier Humbert, thanks).

2015-07-15 - Summer'15 release frenzy.
qjackctl-0.4.0.tar.gz

Some windows fixes added (patch by Kjetil Matheussen, thanks).
Most advanced Setup/Settings are moved into new Setup/Advanced settings tab; limit range for the real-time priority setting, now having 6 as absolute minimum valid value (after patches by Robin Gareus, thanks).
A new top-level widget window geometry state save and restore sub-routine is now in effect (EXPERIMENTAL)
Delayed geometry setup for widget windows upon startup has been deprecated and scrapped altogether.
Setup/settings dialog tab is going into some layout changes; also got rid of old patchbay auto-refresh timer cruft, which was previously hidden/disabled.
New socket names are now automatically inferred from selected client names while on the Patchbay widget, Socket dialog.
Fixed for some strict tests for Qt4 vs. Qt5 configure builds.
German (de) translation update (by Guido Scholz, thanks).

2015-03-25 - Pre-LAC2015 release frenzy.
qjackctl-0.3.13.tar.gz

Added application description as freedesktop.org's AppData.
Setup dialog form is now modeless.
Introducing brand new active patchbay reset/disconnect-all user preference option.
Current highlighted client/port connections are now drawn with thicker connector lines.
New user preference option on whether to show the nagging 'program will keep running in the system tray' message, on main window close.
Connections lines now drawn with anti-aliasing; connections splitter handles width is now reduced.
Drop missing or non-existent patchbay definition files from the most recent used list.

2014-10-19 - JACK Pretty-names aliasing.
qjackctl-0.3.12.tar.gz

JACK client/port pretty-name (metadata) support is being introduced and seamlessly integrated with old Connections client/port aliases editing (rename) (refactored from an original patch by Paul Davis, thanks). (EXPERIMENTAL)
Application close confirm warning is now raising the main window as visible and active for due top level display, especially applicable when minimized to the system tray.
Messages standard output capture has been slightly improved as for non-blocking i/o, whenever available.
Translations install directory change.
Allow the build system to include an user specified LDFLAGS.
Missing input/output-latency parameter settings now settled for the D-BUS controlled JACK server and firewire back-end driver.

2013-12-31 - A fifth of a Jubilee.
qjackctl-0.3.11.tar.gz

More preparations for Qt5 configure build.
Interface device selection is now unified, by moving the old '>' pop-up menu into the customized combo-box drop-down list showing all available card/device names and descriptions (on a patch by Arnout Engelen, thanks).
Added include to shut up gcc 4.7 build failures (patch by Alexis Ballier, thanks).

2013-04-01 The singing swan rehearsal.
qjackctl-0.3.10.tar.gz

Session infra-client management finally being added.
Preparations for Qt5 migration.
Transport tempo (BPM) precision display fixed to 4 digits.
Color-candy (dang old ANSI terminal?) escape sequences are now silently stripped from jackdbus messages captured log (one-liner from original patch by Brendan Jones, thanks).
List ALSA device card id. string instead of device number, while on setup dialog.
Japanese (ja) translation added (by Takashi Sakamoto).

2012-05-18 The last of the remnants.
qjackctl-0.3.9.tar.gz

Killing D-BUS controlled JACK server is now made optional, cf. Setup/Misc/Stop JACK audio server on application exit. (a patch by Roland Mas, thanks).
Added include to shut up gcc 4.7 build failures.
Make(ing) -jN parallel builds now available for the masses.
A mis-quoting bug at the command line argument string may have been crippling the (unmaintained) Windows port since ever, leaving its main function to start jackd dead in the water, belly down :) now hopefully fixed (following a mail transaction with Stephane Letz and Mathias Nagorni, thanks).
Currently a JACK2-only feature, the JACK version string display at the About dialog box, must now be explicitly enabled on configure time (--enable-jack-version).
A new so called "Server Suffix" parameter option appears to rescue on the situations where QjackCtl falls short on extra, exquisite and/or esoteric command line options eg. (net)jack1/2 differences.
Fixed D-Bus Input/Output device parameter settings, filled when either interface is selected for Capture/Playback only. (probable fix for bug #3441860).
Fixed Makefile.in handling of installation directories to the configure script eg. --datadir, --localedir, --mandir. (after an original patch from h3xx, thanks).
Main window is now brought to front and (re)activated when clicking on the system tray icon instead of just hiding it.
Add current xrun count to the system tray icon tooltip, if not zero (after patch #3314633 by Colin Fletcher, thanks).

2011-07-01 JACK Session versioning.
qjackctl-0.3.8.tar.gz

Debugging stacktrace now applies to all working threads.
Session "Save" button now a drop-down menu, replacing the session save type combo-box/drop-down list selection. Also, an early session directory versioning/numbering scheme is now in place, although optional.
Probable fix to debian bug report #624198 - segfault when pressing the stop button (by Grant Adrian Diffey, after a patch from Adrian Knoth, thanks).
Desktop environment session shutdown (eg. logout) is now tapped for graceful application exit, even though the main window is active (visible) and minimizing to system tray is enabled. Both were causing first shutdown/logout attempt to abort. Not anymore, hopefully ;).
Make sure all activated patchbay definition files are in their complete and absolute directory path forms.
Connections refresh button now does an immediate and true reconstruction of all clients and their respective ports and connections, unconditionally.
Command line server start option (-s, --start) is now made independent from configuration setup option (cf. Setup/Misc /Start JACK audio server on application startup).
Now handling cable socket types properly to let patchbay definitions work correctly, whenever having sockets with the very same literal name (twisted from patch #3183467, by Karsten, thanks;).
Abrupt focus behavior when any of the keyboard modifiers (Shift, Ctrl, Alt, Caps Lock) is hit while on Connections client/port aliases editing (rename) has been fixed.
Russian (ru) translation updated (by Alexandre Prokoudine).
Added include "errno.h" alegedly missing for BSD style systems (applying patch for bug #3126091).

2010-11-30 JACK Session managerism.
qjackctl-0.3.7.tar.gz

Session widget has session save type preserved as well.
Connections and the new Messages/Status widgets now have their last open tab preserved across program run-cycles.
Connections and Patchbay widgets have been finally given up on an old feature request: an Expand All items button.
A significant UI layout has been made: the Messages and Status widgets were merged into one, giving space to the brand new Session wigdet to be easy accessible from the main panel control window.
libX11 is now being added explicitly to the build link phase, as seen necessary on some bleeding-edge distros eg. Fedora 13, Debian 6. (closing bug #3050915).
Input/Output latency options were missing but now finally enabled for the firewire back-end.
General standard dialog buttons layout is now in place.
Avoid pre-loading a stalled patchbay definition filename and its nagging error on startup (fixes bug #3017078).
Client connection retrial logic scrapped. Being a leftover from early ages, when machines were slower and JACK server startup times were longer... now, if it can't connect first time as client, it will tear down the server whether it's starting up still or not at all. (cf. Setup/Settings/Start Delay for the rescue).
Server name is finally part of the server settings presets, thanks to Fons Adriaensen for the heads-up.
As a workaround regarding issues switching jack2's backends, Robin Gareus sends us yet another D-Bus metho slot: "preset", (dbus-send --system / org.rncbc.qjackctl.preset string:PRESET). Thanks again.
Another D-Bus interface slot makes it through implementation: "quit" (eg. usage: dbus-send --system / org.rncbc.qjackctl.quit). Besides, there's also these new JACK session management actions which were being overlooked as well: "load", "save", "savequit" and "savetemplate" are also available as D-Bus method slots.
Make sure that Patchbay socket names are unique when adding or copying, fixing previous patch by Dominic Sacré.
JACK version is now being shown on the About box (jack2).
Slight Connections widget behavioral change: (dis)connecting a client (from) to one single port, (dis)connections will be applied in sequence from (to) all client output ports to (from) as many input ports there are in below, one by one (satisfying a 5 year old request from Yann Orlarey, thanks:).
JACK session support is being introduced.
Ignore first XRUN occurrence option dropped from statistics.
Initial widget geometry and visibility persistence logic has been slightly revised as much to avoid crash failures due to wrong main widget hidden state.
Double-quotes are now being added to device names which include blank characters and were rendering invalid all command line invocation of the classic JACK server (eg. specially due for Portaudio device names on Windows).
Transport play (rolling) status is now being guarded to avoid backfiring from extraneous transport state changes.
General source tree layout and build configuration change.
Italian (it) translation added (by Sergio Atzori).
Post-shutdown script invocation logic slightly refactored in attempt to enforce its execution on application quit.

2010-03-08 Full D-Busification!
qjackctl-0.3.6.tar.gz

Make sure socket names are unique on each side of the Patchbay (another patch from Dominic Sacre, thanks).
A bunch of primitive D-Bus interface slots have been added, allowing shortcut access to most of main applications actions like toggling Messages, Status, Connections, Patchbay widget pop-ups, reset stats, transport and so on. New bindings are given eg. via dbus-send --system / org.rncbc.qjackctl.(main, messages, status, connections, patchbay, setup, about, reset, rewind, backward, play, pause, forward). (from an original idea from Sebastian Gutsfeld, thanks).
Patchbay snapshot now tolerates JACK client port strings that have more than one semi-colon in it, honoring just the first one exactly as everywhere else eg. Connections. (a glitch as reported by Geoff Beasley while using a2jmidid).
Most modal message dialog boxes (eg. critical errors) are now replaced by system tray icon bubble messages where available (mitigating feature request #2936455).
Comply with jackd >= 0.118.0 which now runs in real-time mode by default; use of -R is now deprecated from the jackd command line interface options; use -r to run in non-real-time-scheduling.
A man page has beed added.
Got rid of a pretty old and never really useful "jackd-realtime" server path option--actually, it was only seen available on the now defunct old Mandrake Linux distro.
D-Bus support, as provided by org.jackaudio.service aka jackdbus, is now being introduced and used wherever available and whenever enabled. Configuring, starting, stopping and logging the JACK back-end server through the "infamous" jackdbus service is now being seamlessly exploited.
Global configuration state is now explicitly saved/committed to disk when Setup dialog changes are accepted and applied.
Server name command line option added (-n, --server-name).
Single application instance restriction option added (X11).
Setup for the netjack (slave) "net" driver has now sample-rate and frames per buffer (period size) settings disabled and/or ignored, as those are pretty much auto-detected by default; also, a new "netone" backend driver option has been introduced (as suggested by Torben Hohn).
Czech (cs) translation added (by Pavel Fric).
Fixed some main window keyboard shortcuts. Escape key now closes Connections, Patchbay, Status and Messages widgets as usual (bug #2871548).
Fixed glitch on configure portaudio support, specially when the library is not detected as available.

2009-09-30 Slipped away!
qjackctl-0.3.5.tar.gz

Late support for UTF-8 encoded client/port names.
Allow only one single patchbay connection to or from an exclusive socket (mitigating bug #2859119).
Automatic crash-dump reports, debugger stack-traces (gdb), back- traces, whatever, are being introduced as a brand new configure option (--enable-stacktrace) and default enabled on debug build targets (--enable-debug).
Probable fix on the audio connections with regard to client/port (re)name changes (an ancient bug reported by Fons Adriaensen).
Portaudio device selector is now available (after a patch handed by Torben Hohn and Stephane Letz).
A couple of primitive D-Bus interface slots have been introduced, giving the option to start/stop the jackd server from the system bus eg. via dbus-send --system / org.rncbc.qjackctl.start (.stop), (a nice addition supplied by Robin Gareus, thanks).
New command line option (-a, --active-patchbay=path) to specify and activate a given patchbay definition file (a simple patch sent by John Schneiderman, thanks).
Added one significant digit to DSP Load percentage status display.
Tentative support for netjack (slave) by adding the "net" driver to the existing backend driver options on the Setup/Settings section.
Converted obsolete QMessageBox forms to standard buttons.
New patchbay snapshot now raises the dirty flag and allows for the immediate salvage of patchbay definition profile.
Conditional build for JACK port aliases support (JACK >= 0.109.2).
Alternate icon sizes other than default 16x16, are now effective to the Connections widget (Setup/Dislay/Connections Window/Icon size).

2008-12-05 Patchbay snapshot revamp.
qjackctl-0.3.4.tar.gz

Introducing the very first and complete translations in-package: German (de), Spanish (es), French (fr) and Russian (ru); credits in TRANSLATORS.
At last, after years of retarded procrastination, the old infamous patchbay snapshot feature has been the subject of a almost complete rewrite and it does try to give a way better mapping of all actual and current running client/port connections, both JACK (audio, MIDI) and ALSA MIDI, of course ;)
On Setup/Settings/Parameters dialog, all device selection options are now reset to default when disabled interactively.
Grayed/disabled palette color group fix for dark color themes.
Qt Software logo update.
Fait-divers: desktop menu file touched to openSUSE conventions.
ALSA PCM devices now only listed/enumerated iif strictly compliant with the audio mode criteria (Duplex, Capture-only or Playback-only) as kindly suggested by Nedko Ardaunov.
JACK client/port aliases may now be displayed as a global user option (see Setup/Display/Connections/JACK client/port aliases).
Lighten up the connections line and highlight colors, as seen to fit best on some darker background themes.
Patchbay snapshot fixed to differentiate socket clients according to its type (Audio, MIDI or ALSA-Seq), avoiding the mess and gross mistake of hanging disparate type ports under the same client item.
JACK_DEFAULT_SERVER environment variable is now appended to the X11 unique application identifier, allowing for having multiple instances each controlling its own JACK server, besides the default one.
Due to some trouble with newer Qt >= 4.4 applications regarding font size configuration, a new global user option is now available to the rescue: Setup/Misc/Defaults/Base font size (default is no-op).

2008-06-07 Patchbay JACK-MIDI, file logging and X11 uniqueness.
qjackctl-0.3.3.tar.gz

Attempt to load Qt's own translation support and get rid of the ever warning startup message, unless built in debug mode. (transaction by Guido Scholz, while on qsynth-devel, thanks).
Messages file logging makes its first long overdue appearance, with user configurable settings in Setup/Options/Logging.
Only one application instance is now allowed to be up and running, with immediate but graceful termination upon startup iif an already running instance is detected, which will see its main widget shown up and the server started automatically (Qt/X11 platform only).
Finally, full JACK MIDI support sneaks into the patchbay; socket types now differ in Audio, MIDI and ALSA, following the very same nomenclature as found on the Connections widget tabs.
Sun driver support (by Jacob Meuser).
Delay window positioning at startup option is now being disabled, on the Setup/Misc tab, when Minimize to system tray is enabled.
Cosmetic fix: Setup/Settings tab, 'Input Device' text label was using a slightly smaller font than the rest of the application (bug#1872545, reported by Jouni Rinne).

2007-12-20 Patchbay heads-up with season greetings.
qjackctl-0.3.2.tar.gz

Patchbay port matching has been slightly extended, this time allowing for the multiple or as many-to-many connections between socket plugs, provided these are specified in proper regex form (after a patch proposed by Dave Moore, thanks).
A new option to start the program minimized when the system tray icon is enabled, is now available from Setup/Misc/Start minimized to system tray (as kindly suggested by Marc-Olivier Barre).
Regression from QSystemTrayIcon (Qt4 >= 4.2) implementation, at least on X11 environments: while the main application widget was minimized to the system-tray, closing any other top-level widget was causing the immediate and unexpected application shutdown.
Some portaudio backend settings are now being enabled, specially suited for the jackdmp flavouring.
Server mode display blinking, usually shown as the RT indicator, is now an option (Setup/Display/Blink server mode indicator when started).
Tool/child windows position and size preservation fixed.
The connections/patchbay auto-refresh option has been finally removed due to several user requests, although deprecated for quite some time now it has been the probable cause of some periodic xrun occurrences due to graph-locking in jackd (while making Geoff Beasley angry in the process:).
Messages line limit was not being checked, now honored.
Simple as it could ever be, the build executive summary report is now given on configure.
Patchbay snapshot got its socket and port ordering back.
ALSA Sequencer support is now an optional feature on setup, preventing the annoying "MIDI patchbay will be not available" warning message, ruining window placement on Linux systems where the snd-midi-seq kernel module is not loaded or not favorable (eg. OSS) at startup (by request from Jussi Laako).
Get configure to try and detect the correct qmake location and insert it the search order, so let the qt4 tools take precedence when --with-qt option is given and older qt3 ones coexist and are found located ahead in the PATH.
The connections widget is now being properly refreshed, due to some quirk in the QTreeWidget which was preventing some items, specially the expanded ones, to disappear in the void. Meanwhile, with a hand from Stephane Letz, the client/port lookup method was changed to prevent duplicated, missing entries or worse, crashes due to weird behaved windows applications.
The xrun count stats can now be reset simply by middle clicking on the systray icon or the main window's display area (thanks to patch sent by Dominic Sacré).
An improved version of the "shiny" background image was issued. The original somehow looked like two different images put together, probably most apparent on a bright TFT screen (by Dominic Sacré).
A warning is now being issued, asking whether one wants to remove a corresponding Patchbay connection, when client/ports are being disconnected over the Connections window, thus avoiding automatic reconnection annoyance due to normal active Patchbay behavior.
The infamous "Keep child windows always on top" global option is now supposed to behave a little better when disabled, layering child windows as naturally as far the window manager dictates.
Input/Output Channel setting is now allowed to be greater than 32; the special default text is now displayed, also on Input/Output Latency and Priority settings spin-boxes.
Andreas Persson just sent a patch that makes it possible to compile and run qjackctl with Qt version 4.1. Applied without hesitation, thanks.

2007-07-19 System-tray tooltip icon crash fix.
qjackctl-0.3.1a.tar.gz

2007-07-18 Shallowed bug-fix release.
qjackctl-0.3.1.tar.gz

The current DSP load percentage activity is now also displayed on the system-tray icon tooltip.
An illusive but nasty Connections/Patchbay item tooltip crash bug has been hopefully fixed (Qt >= 4.3).
Now using QSystemTrayIcon class facility if available (Qt4 >= 4.2) making the system-tray option available on most platforms, notably on Windows and Mac OS X.
Usage of QProcess class has been severely refactored, now using QProcess::start() instead of QProcess::startDetached(), giving much tighter control over the started jackd(mp) process. Drawbacks are that QjackCtl lost its ability and option to leave the process detached upon quitting the application. Too bad.
A new eye-candy bit has sneaked in: server mode display, that is the RT indicator, now blinks when server/client is started/active.
Combo-box setup history has been corrected on restore, which was discarding the very initial default (factory) contents.
Now that Qt4 is accessible to open-source Windows appplications, there's some experimental stuff sneaking in for jackdmp support on win32.

2007-07-10 Qt4 migration was complete.
qjackctl-0.3.0.tar.gz

Qt4 migration was complete. Care must be taken with this new configuration file and location: this release starts a new one from scratch and won't reuse any of the previous existing ones, although cut and paste might help if you know what you're doing :)
On a last-minute addition, the "firewire" audio backend driver option has been also included, supporting the ffado.org project which is evolving where "freebob" is leaving (thanks to Klaus Zimmermann for this one).

2007-07-02 - JACK MIDI support debut.
qjackctl-0.2.23.tar.gz

JACK MIDI support is now being introduced. Connections window now has a brand new MIDI tab, the older being renamed to ALSA, as for the ALSA/MIDI sequencer conveniency. The server settings now include the MIDI driver setup option (ALSA backend only).
Application icon is now installed to ${prefix}/share/pixmaps; application desktop entry file is now included in installation; spec file (RPM) is now a bit more openSUSE compliant; initial debianization.
Invalidation of the JACK client handle is now forced right on jack_shutdown notification, preventing a most probable fatal crash due to jack_deactivate and/or jack_client_close being called after the jack_watchdog kicks in.
Default font option names were adjusted to "Sans Serif" and "Monospace", wherever available.
The "keep child windows always on top" option is not set as default anymore, because window focus behavior gets tricky on some desktop environments (eg. Mac OS X, Gnome).
Autoconf (configure) scripting gets an update.

2007-03-31 - Long overdue but better late than never.
qjackctl-0.2.22.tar.gz

Fixed default settings for the freebob backend (JACK >= 0.103.0).
CPU Load status label now says correctly DSP Load.
The most recently used patchbay definitions can now be correctly selected in round-robin fashion from its drop-down list widget.
Avoid mixing JACK MIDI ports with regular audio ports on the Connections and Patchbay widgets; strictly list only audio ports.
Added 192k sample rate to setup settings drop down list (as kindly reminded by Klaus Zimmermann, thanks).
Most top-level widgets were missing the normal-widget flag, which were causing some sticky size behavior on some window managers.

2006-10-07 - Shrinking on screen real-estate.
qjackctl-0.2.21.tar.gz

GPL address update.
All window captions can now be set smaller as tool-widgets. This option takes effect when child windows are kept always on top.
For the brave of heart, specially the ones brave enough to try with Stephane Letz's jackdmp, a win32 build should be now possible.
The main window button text labels are now optional (after a kind suggestion by Geoff Beasley, thanks).
Increased the default maximum number of ports setting from 128 to 256.
Initial freebob backend driver support. Also changed the coreaudio backend driver command line device name/id parameter.
Closing the main window while not as an active JACK client, nor under a server running state, will just quit the whole application, even though the system-tray icon option is in effect.
The most relevant transport commands (Rewind, Play and Pause) are now made available on the main window context pop-up menu.
The post-shutdown script is now also being called when using the Stop button, whether the jackd server has been started internally or not. The initial hard-coded default is now on and set to `killall jackd` (as a workaround to an old request from Stephane Letz).
The main window buttons display are now optional. One can choose whether the left, right and/or transport buttons are hidden, making it for a total of six different modes for the main window presentation (after a much simpler suggestion from Paul Davis and Stephane Letz).
Added configure support for x86_64 libraries (UNTESTED).

2006-03-05 - Featuring patchbay socket forwarding.
qjackctl-0.2.20.tar.gz

Server path setting now accepts custom command line parameters (after a kind suggestion from Jussi Laako).
The internal XRUN callback notification statistics and reporting has been changed to be a bit less intrusive.
Patchbay socket dialog gets some more eye-candy as icons have been added to the client and plug selection (combobox) widgets.
Connections and patchbay lines coloring has changed just slightly :)
New patchbay socket forwarding feature. Any patchbay socket can now be set to have all its connections replicated (i.e. forwarded) to another one, which will behave actively as a clone of the former. Forward connections are shown by vertical directed colored lines, and can be selected either on socket dialog or from context menu (currently experimental, only applicable to input/writable sockets).
Optional specification of alternate JACK and/or ALSA installation paths on configure time (after a patch from Lucas Brasilino, thanks).

2005-11-28 - MIDI aliases are back in town.
qjackctl-0.2.19a.tar.gz

ALSA sequencer client/port name aliases are functional again; all 1 actual MIDI sequencer client/port numerical identifier prefixes are also back in business.

2005-11-19 - MRU patchbay selection, Mac OS X and other fixes.
qjackctl-0.2.19.tar.gz

Connections widget views are now properly refreshed after renaming client/ports (aliases).
Disabled system tray and ALSA sequencer support on configure time, whenever building for MacOSX as default.
Fixed the major issues with selecting an audio interface on Mac OSX; the button the right of the interface combo is now much better looking than it was before; input/output channel counts are also updated automatically now (thanks to Jesse Chappell for the patch).
Prevent the setting of the coreaudio device id on the jackd command line (-n) whenever the default interface is being selected.
The connections and patchbay windows are now allowed to have a wider connection lines frame panel; splitter width sizes are now persistent across application sessions (thanks to Filipe Tomás for the hint).
Activation toggling feedback on the patchbay widget has been fixed; additionally and as found convenient, the most recently used patchbay definitions can now be loaded immediately by selecting from a drop-down list widget, which replaces the old static patchbay name status text, and adds a lil'icon too :)
All widget captions changed to include proper application title prefix.
Attempt to bring those aging autoconf templates to date; sample SPEC file for RPM build is now being included and generated at configure time.
The current selected device is now shown with a checkmark on the device selection menu(s), while on the settings dialog.
Set to use QApplication::setMainWidget() instead of registering the traditional lastWindowClosed() signal to quit() slot, just to let the -geometry command line argument have some effect on X11.

2005-07-18 - The mantra of bugfixes stays on.
qjackctl-0.2.18.tar.gz

A freezing and endless loop condition on the patchbay socket item duplication (copy) has been fixed.
Fixed output disability when messages limit option is turned off (thanks again to Wolfgang Woehl for spotting this one).

2005-06-17 - Systemic I/O Latency settings are in.
qjackctl-0.2.17.tar.gz

Systemic I/O Latency settings are now featured for the alsa, oss and coreaudio backends, letting you specify the known latency of external hardware for client aware compensation purposes (thanks to Wolfgang Woehl, for the reminder).
Update on last backstage changes to the coreaudio backend options (due to Stéphane Letz. Thanks).

2005-06-13 - OSS device name selection and Mac OS X breakthrough.
qjackctl-0.2.16.tar.gz

ALSA sequencer client/port name changes are now properly detected on the MIDI connections widget (as noted by Chris Cannam. Thanks).
Long overdue transport buttons (rewind, backward and forward) finally landed onto the main control window, at last :).
Duplication (copy) of patchbay socket items was added.
Do not ever try to start the JACK server if there's one already found running, on which case the client-only mode of operation is then activated (as kindly suggested by Orm Finnendahl, thanks).
After several Mac OS X user requests, ALSA/MIDI sequencer support is now an option, otherwise detected at configure time and conditionally compiled in if, and only if, ALSA is found available (which has been a primordial assumption on Linux systems:). Ah, and that just makes for the blind inclusion of another backend driver option: coreaudio.
Actual OSS device selection menu now featured on setup dialog; these adds to the device selection button menus for the OSS driver settings.
Delayed geometry setup of windows upon startup was added as an optional workaround to subtle problems due to window decoration information not being available at window creation time on some window managers (as patch proposed by Dirk Jagdmann. Thanks).
Fixed some minor but rather old bug that was quitting the application abruptly, when one switches off the system tray icon while the main application widget is hidden.
Cancel is now an option when creating a new patchbay definition.
Context menus are finally littered with icons.
Minor configure and Makefile install fixes, as Debian and Mac OS X specialties. Also, install does the right thing with target file modes (thanks to Matt Flax and Ebrahim Mayat, for pointing these out).

2005-02-09 - Return of the paranoid.
qjackctl-0.2.15a.tar.gz

Regression from 0.2.13, of the not so stupid pseudo-mutex guards on the connections management framework, after fixing some crash reports from Fernando Pablo Lopez-Lezcano and Dave Phillips (thanks!); it pays to be such a paranoid after all :).

2005-02-06 - Client/port names aliasing and other minors.
qjackctl-0.2.15.tar.gz

JACK/ALSA client and port name aliasing (renaming) is now an optional feature for the connections window; all client/port aliases are saved on a per preset basis (as proposed for Lionstracs' Mediastation).
Server state now shown (back gain) on the system tray icon tooltip; speaking of which, tooltips are now also featured on connections, status and patchbay windows.
New actual hardware device selection menu featured on setup dialog; these new button menus are only available for the ALSA driver settings.
Server path factory default to jackd instead of jackstart; preset setup button icons are back.
Fixed rare connection port item removal/disconnection dangling pointer bug.

2005-01-23 - More progressive optimizations.
qjackctl-0.2.14.tar.gz

Put a limit on XRUN callback messages and statistics report rate, preventing the potential hosing of the GUI due to a XRUN cascade storm. The maximum reasonable report rate has been fixed to be one XRUN callback occurrence per second.
Set to ignore the SIGPIPE ("Broken pipe") signal, where available, as the default handler is usually fatal when a JACK client is zombified abruptly.
All conection view items are now sorted in natural case insensitive order, not just as audio port names as was before.
Got rid of those nonsense paranoid and rather stupid pseudo-mutex guards on the connections management framework and event notifications (nuff said :).
Optional confirmation warning on audio server shutdown, if there's some audio clients still active and connected (as suggested by Sampo Savolainen).
Check for "jack/statistics.h" on configure time (as of JACK 0.99.42+ CVS).
"Unlock memory" server setup option was added, allowing the release of memory used by common toolkit libraries (GTK+, Qt, FLTK, Wine) that were being superfluously locked on every GUI JACK client; number of periods has now the minimum allowed value of 2; server start delay widget converted to spinbox; setup dialog layout slighly changed.
Removed stand-alone usx2y driver support. Since JACK 0.99.41+ CVS, the special "rawusb" support on the Tascam US-122/224/428 USB Audio/MIDI interface controllers have been merged and properly integrated into the regular alsa backend driver. Being still experimental, this special mode of operation is now triggered only when "hw:N,2" is specified as the alsa device name (N = soundcard index of snd-usb-usx2y module).
Messages window limit is now enforced only when the line count exceeds in one third the user configured line count maximum; if Qt 3.2.0+ is in use, the QTextView widget is otherwise set to the optimized Qt::LogText format.
XRUN status items are kept double-dashed if none has been detected.

2004-11-21 - Retouches and minor optimizations.
qjackctl-0.2.13.tar.gz

Main window is now properly minimized instead of simply hidden when the system tray icon is not available nor opted in (as suggested by Florian Schmidt).
Some informational status items are now updated 10 times less frequently (e.g. CPU Load, Sample Rate, Buffer Size, Realtime Mode, etc.), lowering the CPU burden of most probably redundant status updates.
XRUN detection and statistics are being conditionally included if jack_get_xrun_delayed_usecs() is available (as of JACK 0.99.7+ CVS).
Fixed ancient bug on client shutdown event handling, which was invoking the xrun notification handler by mistake.
Support for maximum scheduling delay status added; this status relies on jack_get_max_delayed_usecs() function availability at configure time, depending on a Lee Revell's non-official JACK patch.
Patchbay Activate button is now a toggle button widget, allowing the deactivation of the current patchbay profile.
Reset-status icon has been changed to a simple red circle instead of previous one which was much like a power-switch symbol.
Preset selection has been added to the context menu.

2004-10-11 - Audio connections now naturally sorted.
qjackctl-0.2.12a.tar.gz

Client port list on audio connections are now hopefully fixed for good; the sort comparison function now takes full natural order into account.

2004-10-08 - Larger icons and font option on connections/patchbay.
qjackctl-0.2.12.tar.gz

Fixed some old and slow memory-leak due to redundand and repetitive call to jack_port_by_name() (discovered and solved, thanks to Jesse Chappell); some other free() and configure fixes were also applied.
Shiny display effect toggling has immediate feedback on setup dialog.
Added new usx2y driver support.
New scaled connections/patchbay icons were added; meanwhile, all inline XPM icons were removed and brainlessly converted to PNG format.
New setup options as for the connections/patchbay view apprearence: larger icon sizes and font selection are now possible, to better ease manipulation on a touchscreen (feature requested for Lionstracs' Mediastation).
Connection line width follows icon size in discrete proportion.
"Other" setup options moved to a new dialog tab, "Misc"; new extreme item values, 32 and 16 frames, added to the drop-down list of the Frames/Buffer setting (as suggested by Mark Knetch).

2004-09-10 - Shiny display now optional and other fixes.
qjackctl-0.2.11.tar.gz

Fixed Input/Output channels settings, being now either enabled when the ALSA driver is selected for Capture/Playback only.
Shiny display effect: after some conservative user complaints this pure cosmetic feature is now made optional ;)

2004-09-04 - Shiny display and curved connections.
qjackctl-0.2.10.tar.gz

New pre-shutdown script setup option, allowing to specify a shell-script to be run before the JACK server daemon is shutted-down. This overrides any previous shutdown script setting, which should be now moved onto the existing post-shutdown script option, as to keep old procedural behaviour.
Avoid stopping JACK prematurely with QProcess::kill() (oneliner fix); stopping JACK will now take a little bit longer, but hopefully will take the time to cleanup properly (thanks to Kjetil Matheussen).
ALSA driver Duplex mode accepts alternate Input or Output device name.
Context menu reset option is now always enabled (yet another suggestion from Sampo Savolainen).
Main display background gets shinny effect; adjusted system tray background palette color mode.
Priority and setup control is now a spinbox ranging from 0..89 (as suggested by Florian Schmidt). Same for Periods/Buffer.
Patchbay connection lines are now drawn correctly when items are scrolled out of view. Additionally, the connection lines can now be optionally drawn as bezier spline curves (big thanks to Wilfried Huss).

2004-07-04 - Sloppy boy fixes and minor featuritis.
qjackctl-0.2.9.tar.gz

Patchbay socket dialog client and plug list option items are now properly escaped as regular expressions.
JACK callbacks are now internally mapped to QCustomeEvent's instead of using the traditional pipe notifications.
The system tray popup menu is now featured as a context menu on the main application window too.
The reset status option is now included in the system tray popup menu.
Server stop command button now enabled during client startup interval; this makes it possible to stop the server just in case the client can't be activated for any reason.
Top level sub-windows are now always raised and set with active focus when shown to visibility.

2004-04-30 - System tray icon and menu option.
qjackctl-0.2.8.tar.gz

New option for system tray icon and menu, which is known to be effective on KDE enabled desktops; support for freedesktop.org's system tray protocol specification has been included so this maybe also effective on Gnome2.
Capture or Playback-only optional alternate device interface name may now be specified for the ALSA audio driver server settings.
Maximum number of ports setting was added to server setup.
The dash (-) is now a legal character for preset names.

2004-04-05 - OSS driver setup fix.
qjackctl-0.2.7b.tar.gz

OSS driver halfduplex setup operation is now fixed, thanks to Jussi Laako.

2004-04-05 - Compilation fix for Qt 3.1.
qjackctl-0.2.7a.tar.gz

QSplitter::setChildrenCollapsible call is now conditionally compiled, applied only on Qt 3.2+.

2004-04-04 - User-interface refinements and OSS driver support.
qjackctl-0.2.7.tar.gz

Connections and patchbay windows horizontal layout are now user configurable via splitter widgets.
Refresh on connections window now take effect on both tabs, Audio (JACK) and MIDI (ALSA).
OSS driver support and no-mlock option added to server settings, setup dialog (as of JACK 0.95.7+).
Temporary server configuration option added, applicable to the auto-start server feature on client applications, whether the server shall exit once all clients are closed.
Server mode (RT) status display added.
Warning messages are now prompted to the user when there are any pending changes not saved nor applied while on the setup dialog.
Translation support for the default preset name "(default)".
Messages window pops up whenever a critical error message is issued.

2004-02-29 - More work in progress.
qjackctl-0.2.6.tar.gz

Message window line limit is now a configurable option on setup, as is whether the command-line local configuration file gets saved at all; the first argument of the command-line configuration is stuffed to be the executable server command absolute path, when possible.
Warning message issued if ALSA sequencer is not available on startup; also if server settings are changed while client is currently active.
Server autostart magic is locally disabled by forcing the environment variable JACK_NO_START_SERVER at startup; with any luck this will maintain qjackctl's behaviour whether the JACK server is already started or not.
Makefile.cvs makes its late entrance on the build toolset.

2004-02-16 - Server survival option and command-line wrapper feature.
qjackctl-0.2.5.tar.gz

New option on application exit for leaving the JACK server daemon running, surviving the parent process; the confirmation prompt on application close now features a "Terminate", "Leave" and "Cancel" button options.
New command-line wrapper feature for JACK client applications, thus giving a convenient head start for the JACK audio server as needed (as suggested by Fernando Pablo Lopez-Lezcano, of Planet CCRMA fame).
Messages, Status, Connections and Patchbay pop-up windows are not hinted as dialogs anymore and thus are not centered relative to parent main window which has become a strict Qt dialog widget behaviour (as of Qt 3.3+).
Patchbay window content changes are now properly updated, without the need for a later manual refresh to redraw stalled connection lines.
The snapshot option for creating a new patchbay definition from current actual connections now takes client and port names as regular expressions and smart enough when regarding more than two contiguous decimal digits :)
Patchbay socket list view ordering is now properly preserved; socket dialog gets plug list handling ehancements; active patchbay gets reloaded when commited and saved to file; connections redraw on socket removal has been fixed.
Server literal command-line is now saved into local configuration file (~/.jackdrc) for convenience of future auto-start client applications.
New setup option on wether all child windows are kept on top of the main window, or otherwise floating with probable taskbar entries of their own.
Setup changes that are only effective next time the program is run gets an informational message box shown to the user.

2004-02-01 - Exclusive patchbay sockets.
qjackctl-0.2.4.tar.gz

Patchbay definitions may now be configured with exclusive sockets; this way, only one defined connection is allowed as soon as it's available, being all others immediatelly disconnected whenever attempted.
On the connections view, current connected client ports are now slightly highlighted (blue) whenever a client or port is selected on the opposite column (as suggested by Lawrie Abbott).
Connections and patchbay drag and drop feature is now bilateral; you can now drag and drop an item from right to left to establish the connection.

2004-01-19 - Tenths, hundredths, milliseconds, whatever..
qjackctl-0.2.3a.tar.gz

A qt-designer copy-paste leftover has been fixed; sloppy boy I am ;)
Custom time format setup for all elapsed times, allowing the display of tenths, hundredths or even milliseconds instead of just hundredths of second for transport time code.

2004-01-16 - Hundredths are back.
qjackctl-0.2.2.tar.gz

Transport time is now shown with hundredths of second (hh:mm:ss.ddd), as it was once before but not constant zero.
Client start delay now configurable on setup; this may be of help for slow machines or unusual long server driver startups (e.g. portaudio).
Client-only mode restart has been fixed.
Messages color retouching.
Popup menus memory leak fixed.

2003-12-29 - The fix of fixes.
qjackctl-0.2.1.tar.gz

Fixed jackstart/jackd command line parameter argument concatenation.
Front panel status display font can now be customized.
Some connection graph changes were being silently missed, now fixed.
Messages window fallback fix; stdout handling has been retouched to be more line buffer oriented.

2003-12-12 - ALSA sequencer patchbay entrance.
qjackctl-0.2.0.tar.gz

ALSA sequencer subscription patchbay feature, complementing current audio service with a MIDI application connection graph, gracefuly included on the same front-end.
Current preset name is shown on main window caption title. New button and form icons. Messages window blankness rendering fix.
Immediate server startup option was made persistent and therefore remembered across sessions.
Standard output/error stream capture setup option.

2003-11-26 - Server settings profile/preset feature.
qjackctl-0.1.3.tar.gz

Server setup settings can now be profiled, named and saved as presets. Command line preset name option and scripting argument meta-symbols are also featured for convenience (kindly suggested by Sampo Savolainen).
New configure time argument debugging support.

2003-11-16 - More work in progress.
qjackctl-0.1.2.tar.gz

Qmake project file (qjackctl.pro) now generated by configure (autoconf), introducing the explicit binding support to libqt-mt (multi-thread).
Main window is not hinted as a dialog anymore, giving room to the minimize button on some other window managers; application close confirm warning is now an option.
Removed deprecated settings options: temporary directory and ASIO mode; new available settings for the ALSA driver: force 16bit format, maximum input channels and output channels (as of JACK 0.90.x).
Transport time display looses static hundredth seconds decimal digits.

2003-11-01 - Whatever happened to OK button icons.
qjackctl-0.1.1a.tar.gz

Restored missing OK button icons.

2003-10-29 - Minor feature enhancements and bugfixes.
qjackctl-0.1.1.tar.gz

Main window display items are now made fixed in width, at least those more prone to change frequently and thus caused some display jitter.
Messages, status, connections and patchbay module windows are now reopened automagicaly on startup as they were on previous session.
New patchbay definition snapshot option from current actual connections; current active patchbay filename status indication on title.
New icons patchbay editor window and socket dialogs; own stdout/stdin is now properly captured and shown on messages log window.
Fixed an obvious patchbay connection scan freezing bug; default .xml file extension enforcement on save.

2003-10-22 - Major user interface redesign.
qjackctl-0.1.0.tar.gz

Main application window complete redesign, now more like a multimedia/LCD control panel -- old main window dialog tabs are now splitted in separate pop-up windows/dialogs; big time display options. In other words, this sums up to a nice complete application rewrite.
Deprecated options for forcing aRTs and jackd daemons are no longer available; this functionality can be officially superceded by the more generic startup/shutdown script options.
Seamless support for externally started JACK server, providing a client-only mode of operation; if the JACK daemon is already started, qjackctl enters in client detached mode automagically.
Messages window font is configurable and saved across sessions (by Jack O'Quin's humble request). Some colorization has been introduced on some event messages.
Preliminary patchbay persistence feature is under way. A patchbay definition editor is already included, following an alternative socket-plug patchbay model that aliases and is a direct map to the client-port JACK connections model. The patchbay definitions are stored as text/xml files.
New post-startup script option; immediate JACK server startup command line option (as suggested by Kasper Souren).

2003-10-03 - Tiny bugfixes.
qjackctl-0.0.9a.tar.gz

Startup/shutdown script options now correctly saved and restored.
Dummy driver wait parameter is now properly set on startup.
Confirmation warning on disconnecting all ports (as suggested by Robert Jonsson).

2003-09-25 - Work in progress.
qjackctl-0.0.9.tar.gz

New connection port item pixmaps that distinguishes physical from logical ports.
History of most recently used values gets saved for some settings and options comboboxes widgets.
New startup and shutdown script options, intended to supersede the mess of forcing artsd and jackd itself, in a near future ;) this way, one can also include the operation of the LADCCA daemon (following a suggestion from Kasper Souren).
Connections command buttons are now shortly disabled after clicking, avoiding accidental duplicated connections.

2003-09-19 - Preliminary transport and buffer size status control:
qjackctl-0.0.8.tar.gz

Transport status and control introduced (requires JACK 0.80.0+).
Statistics tab renamed to Status, where the transport state info and simple play/pause control buttons are now placed.
Buffer size status is yet another item on the list view.

2003-09-15 - Minor bugfixes:
qjackctl-0.0.7.tar.gz

Inverse alphabetic ordering fixed on Connections port listing, and connect/disconnect buttons are now properly enabled.
Verbose option added; messages view font size fix; about Qt dialog now accessible; logo pixmap retouched.
Configure script now checks for Qt 3.1.1 or greater.

2003-09-12 - Drag-n-drop and more feature enhancements and bufixes:
qjackctl-0.0.6.tar.gz

Patchbay connection user interface handling has been fairly rewritten; (features new bugs while fixing old ones ;-)
Reset XRUN statistics button added; reset time recorded on statistics; calculated latency is now shown on settings; ASIO mode disables Periods/Buffer setting (all suggestions by Lawrie Abbott).
Context popup menu introduced for port connection handling; includes new command for disconnecting all currently connected ports.
Closing the application while JACK is running, is now presented with a warning confirmation message (preventing accidental Esc key press? :).
Patchbay port lists ordering are now more numerical-friendly than ever, taking account for sub-numbering port names (following yet another suggestion from Lawrie).
Connection drag-and-drop is now featured after many, many requests.
Corrected the configure script to properly recognize Qt 3.0.1 or greater.

2003-09-05 - Minor feature ehancements and bugfixes:
qjackctl-0.0.5.tar.gz

Internationalization support added; future qjackctl_$LANG.qm translation files are to be located on prefix/share/locale .
New dummy and portaudio driver support (as of JACK 0.80.0+).
A couple of silent memory leak bugs have been corrected.

2003-08-28 - Minor changes and bugfixes:
qjackctl-0.0.4.tar.gz

The patchbay port lists are now sorted in a more numerical friendly manner (as suggested by Steve Harris); the sort code has been "borrowed" from qjackconnect, yet again.
Patchbay port connection lines are now always visible, even if their respective connected port items aren't.
Multiple simultaneous port connections can now be handled when a client application item is selected for connection/disconnection (again, suggested by Steve Harris), replicating and extending qjackconnect's similar behaviour.
An auto-refresh option for the patchbay connections is now available, for those cases when client code just can't handle properly some callbacks.
Window positioning and sizing is now almost persistent across sessions; as before, position is saved for the minimal view mode; but now, the details dialog view mode gets its position and size independantly saved also.

2003-08-07 - A visual patchbay has been integrated:
qjackctl-0.0.3.tar.gz

A patchbay for jack port connections is now integrated, much like the greatest Mathias Nagorni's qjackconnect

2003-08-02 - Client code features have been introduced:
qjackctl-0.0.2.tar.gz

JACK library and header files are checked on configure.
Server CPU load, sample rate and time elapsed since last XRUN detected, are now displayed on statistics.

2003-07-26 - The very first release is here:
qjackctl-0.0.1.tar.gz

Git Access

This project's Git repository can be checked out through anonymous (https) access with the following instructions:

git clone https://git.code.sf.net/p/qjackctl/code qjackctl-git

Hopefully, you'll be now with a proper source tree, ready for build.

Note

For quite some time there are alternate Git repositories which are kept in sync with the above sf.net one:

However, this doesn't mean that the QjackCtl 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.

QjackCtl JACK Audio Connection Kit - Qt GUI Interface