Release Notes for DrumGizmo-0.9.20

Roadmap: version_0920

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This release was originally intended as a bugfix release, but quite a few features also managed to find their way in.

Noteworthy bugs that has been fixed:

  • Software regression error in cymbal choke code has been fixed. So now choking of cymbals using both directed chokes and after-touch midi events work again as expected.
  • A compilation error due to an update in LV2 API (we used an obsolete LV2 type) has been fixed, so now compilation should work for everybody again.
  • Code can now properly be compiled with NSL support disabled at configure time.
  • Compilation with the modern gcc-11 compiler has been fixed.

On top of this a lot of crash-bugs has been fixed.

Thanks to corrados, this version adds support for midi input through the alsa seq driver for the command line version of drumgizmo. So now drumgizmo can be run from the commandline entirely without the need for jack.


  • Fix compilation with gcc-11 (deva)
  • Remove sndfile.h from audiofile header
  • Fix missing backslash in libdg includepaths
  • Fix compiler warning.
  • Add missing include
  • Fix compilation issue when compiling without nls enabled. (deva)
    • Fix compiling without nls.
  • Make configure fail if nls is enabled but gettext tools not found. (deva)
    • Make configure fail if nls is enabled but the gettext tools are not found.


  • Prevent processing jack clients that are being deleted.
  • Fix crash when loading a drum-kit that has more channels than the engine is compiled
    • Fix crash when loading a kit with more channels than the engine was compiled for.
  • Fix crash when pressing play while loading a drumkit. See IRC (deva/chaot4)
    • Skip events whose audio-files has not yet been loaded.
  • Fix crash when loading Crocell kit in ardour (stack allocation issue) - see Ardour bug report. (deva)
    • Get rid of big stack allocation during resampler (re-)configuration.
  • Fix cli crash when using async-load (deva/corrados)
    • Fix crash when doing async-load in cli.


  • Make aftertouch choke if velocities > 0 instead of == 0 as this seem to be the vdrum vendor concensus. (deva)
    • Aftertouch choke if velocities > 0 instead of == 0 as this seem to be the vdrum vendor concensus.
  • Fixed directed-chokes regression error. (deva)
    • Fix directed choke regression error.
  • Fix after-touch chokes regression error. (deva)
    • Fix aftertouch choke regression error.
  • Clear all active events (ie. stop playing samples) when loading a new kit.
  • This should fix wrong sample selection with two samples.
  • Fix ALSA output frame size change. (corrados)
    • added getBufferSize function for alsa out


  • Record and measure real cymbal choke-time and use this value instead of the current 68ms. (deva)
    • Adjust choke ramp-down time to better reflect the actual dampening time of a hand-dampened cymbal.
  • Add support for triggering multiple instruments with one note. (deva)
    • Add support for a single midi note that plays multiple instruments.
  • Add voice-limit parameters to cli (corrados)
    • added voice limit cli parameters
  • Add setting for controlling ALSA periods to output module.
  • Add ALSA MIDI seq support (corrados)
    • Add ALSA midi input support.


  • Add unit-test for EventsDS::clear() method.
  • Add clear member function to EventsDS.
  • Add assert to break infinite loop in case of a bug.
  • Add -Wextra to debug compilation flags.
  • Make it possible to (only) build unit-test in parrallel.
  • Add dggui namespace to libdggui components.
  • Split UI code into application/plugin UI and UI library.
  • Run and fix unit-tests on windows. (deva)
    • Fix unit-test compilation on windows.
  • Make rcgen compile and work on windows again through autotools. (deva)
    • Fix rcgen on windows.
  • Improve macOS rendering speed. (deva/veticus)
    • Remove redraw on all cocoa/macOS events to speed up UI rendering.
  • Reduce UI window height to fit on “small” displays
    • Make main window slightly less tall to better fit on low-res displays.


  • Bent Bisballe Nyeng
  • André Nusser
  • Volker Fischer
  • French translations by Olivier Humbert

Special thanks to Veticus for support in the macOS optimizations.

changelog/drumgizmo-0.9.20.txt · Last modified: 2022/07/04 20:17 by deva
Trace: drumgizmo-0.9.20
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