Qtractor - An Audio/MIDI multi-track sequencer
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Transcript of Qtractor - An Audio/MIDI multi-track sequencer
SAPO Codebits 2008SAPO Codebits 2008
QtractorQtractorAn Audio/MIDI multi-track sequencerAn Audio/MIDI multi-track sequencer
Rui Nuno CapelaRui Nuno Capelarncbc.orgrncbc.org
http://qtractor.sourceforge.nethttp://qtractor.sourceforge.net
November 2008November 2008
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 2
What is Qtractor ? (1)What is Qtractor ? (1)
Yet another Audio / MIDI sequencer ?Yet another Audio / MIDI sequencer ?
Yes ;-)Yes ;-) Multi-track recorder paradigmMulti-track recorder paradigm GNU / LinuxGNU / Linux JACKJACK ALSA SequencerALSA Sequencer C++C++ Qt 4Qt 4 GPLGPL
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 3
What is Qtractor ? (2)What is Qtractor ? (2)● Home-studio DAW GUIHome-studio DAW GUI● Intuitive and easy to use (hopefully)Intuitive and easy to use (hopefully)● Music-making playgroundMusic-making playground● Not for the erudite (no score editor)Not for the erudite (no score editor)● Techno-boy bedroom studio, anyone?Techno-boy bedroom studio, anyone?● Not a revolution, will evolve . . .Not a revolution, will evolve . . .
● Why not Ardour, Rosegarden ?Why not Ardour, Rosegarden ?
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 4
Who is behind ?Who is behind ?
Hobby work of one developerHobby work of one developer● me, rncbc a.k.a. Rui Nuno Capelame, rncbc a.k.a. Rui Nuno Capela
LAD PortfolioLAD Portfolio● QjackCtlQjackCtl● QsynthQsynth● QsamplerQsampler
A A gift economygift economy player :-) player :-)
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 5
But why ?But why ?● Just for funJust for fun● The motive . . .The motive . . .
Long time enthusiasm on electronic musicLong time enthusiasm on electronic music
● The skill . . .The skill . . . A half-life on programming (>20y)A half-life on programming (>20y)
● The moment . . .The moment . . . An extraordinary event alignment occurred in An extraordinary event alignment occurred in
the whole Universe . . .the whole Universe . . .
So that was it !So that was it !
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 6
Where can get it ?Where can get it ?
qtractor.sourceforge.netqtractor.sourceforge.net● AlphaAlpha still, but... still, but...● Fully functional (no Fully functional (no not-implemented-yetsnot-implemented-yets))● What You See Is What What You See Is What IsIs Working Working● Bugs'R'UsBugs'R'Us● WIPWIP
Open for Business (no money involved)Open for Business (no money involved)● users, developers, players, nurturers . . . users, developers, players, nurturers . . .
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 7
What do I need ? (1)What do I need ? (1)
RequirementsRequirements MandatoryMandatory
Qt 4 (core, gui, xml)Qt 4 (core, gui, xml) JACKJACK ALSAALSA libsndfilelibsndfile LADSPA (SDK)LADSPA (SDK)
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 8
What do I need ? (2)What do I need ? (2)
RequirementsRequirements OptionalOptional
libvorbis (enc, file)libvorbis (enc, file) libmadlibmad libsampleratelibsamplerate librubberbandlibrubberband DSSI (SDK)DSSI (SDK) VST (SDK)VST (SDK)
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Featuritis (1)Featuritis (1)● Multi-track audio and MIDI sequencing and Multi-track audio and MIDI sequencing and
recording.recording.● Developed on pure Qt4 C++ application Developed on pure Qt4 C++ application
framework (no Qt3 / KDE dependencies).framework (no Qt3 / KDE dependencies).● Uses JACK for audio and ALSA sequencer Uses JACK for audio and ALSA sequencer
for MIDI, as multimedia infrastructures.for MIDI, as multimedia infrastructures.● Traditional multi-track tape recorder control Traditional multi-track tape recorder control
paradigm.paradigm.
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Featuritis (2)Featuritis (2)● Audio file formats support: OGG (libvorbis), Audio file formats support: OGG (libvorbis),
MP3 (libmad, playback only), WAV, FLAC, MP3 (libmad, playback only), WAV, FLAC, AIFF and many, many more (libsndfile).AIFF and many, many more (libsndfile).
● Standard MIDI files support (format 0 and 1).Standard MIDI files support (format 0 and 1).● Non-destructive, non-linear editing.Non-destructive, non-linear editing.● Unlimited number of tracks per Unlimited number of tracks per
session/project.session/project.● Unlimited number of overlapping clips per Unlimited number of overlapping clips per
track.track.
Featuritis (3)Featuritis (3)● Built-in mixer and monitor controls.Built-in mixer and monitor controls.● Built-in connection patch-bay control and Built-in connection patch-bay control and
persistence (QjackCtl;).persistence (QjackCtl;).● LADSPA, DSSI and native VSTi plug-ins LADSPA, DSSI and native VSTi plug-ins
support.support.● Unlimited number of plug-ins per track or Unlimited number of plug-ins per track or
bus.bus.● Plug-in presets, programs and Plug-in presets, programs and
chunk/configurations support.chunk/configurations support.
Featuritis (4)Featuritis (4)● Audio/MIDI clip fade-in/out (linear, quadratic, Audio/MIDI clip fade-in/out (linear, quadratic,
cubic).cubic).● Audio/MIDI clip gain, normalize, export.Audio/MIDI clip gain, normalize, export.● Audio clip time-stretching (WSOLA-like, Audio clip time-stretching (WSOLA-like,
librubberband).librubberband).● Audio clip pitch-shifting (librubberband).Audio clip pitch-shifting (librubberband).● Audio clip seamless sample-rate conversion Audio clip seamless sample-rate conversion
(libsamplerate).(libsamplerate).● Audio/MIDI track export (mix-down, merge).Audio/MIDI track export (mix-down, merge).● Audio/MIDI metronome bar/beat clicks.Audio/MIDI metronome bar/beat clicks.
Featuritis (5)Featuritis (5)● MIDI clip editor (piano-roll / matrix editor).MIDI clip editor (piano-roll / matrix editor).● MIDI instrument definitions (Cakewalk(tm))MIDI instrument definitions (Cakewalk(tm))● JACK transport sync master.JACK transport sync master.● MMC control surface enabled.MMC control surface enabled.● Configurable keyboard shortcuts.Configurable keyboard shortcuts.
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 14
Screenshot!Screenshot!
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 15
Monolith (1)Monolith (1)
OSkernel
AudioAudiodriverdriver
MIDIMIDIdriverdriver
Ax
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 16
Monolith (2)Monolith (2)
OSOSkernelkernel
AudioAudiodriverdriver
MIDIMIDIdriverdriver
AxAx
P1P1 P3P3
P2P2 P4P4
PnPn
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Pipe Mania (1)Pipe Mania (1)
LinuxLinuxkernelkernel
ALSAALSAdriverdriver
JACKJACK
A1A1 A3A3
A2A2 A4A4
AnAn
ALSAALSAsequencersequencer
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 18
Pipe Mania (2)Pipe Mania (2)
LinuxLinuxkernelkernel
ALSAALSAdriverdriver
JACKJACK
A1A1 A3A3
A2A2 A4A4
AnAn
P1P1 P3P3
P2P2
PnPn
P1P1 P3P3
P2P2
PnPn
ALSAALSAsequencersequencer
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Studio Setup (1)Studio Setup (1)
DAWDAW
Analog AudioAnalog Audio
Digital AudioDigital Audio
MIDI / MMCMIDI / MMC
MIDIMIDI
USBUSB
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 20
Studio Setup (2)Studio Setup (2)
DAWDAW
Synth / SamplerSynth / Sampler
Analog AudioAnalog Audio
Digital AudioDigital Audio
MIDI / MMCMIDI / MMC
MIDIMIDI
USB
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Studio Setup (3)Studio Setup (3)
DAWDAW
Synth/SamplerSynth/Sampler
Recorder/SequencerRecorder/Sequencer
Analog AudioAnalog Audio
Digital AudioDigital Audio
MIDI / MMCMIDI / MMC
MIDIMIDI
USBUSB
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 22
Evil Flow DiagramEvil Flow Diagram
......
inin outoutInputInputBusBus
OutputOutputBusBusmonitormonitor
......
InputInputBusBus
OutputOutputBusBusmonitormonitorinin outout
= Volume / Pan= Volume / Pan Plug-insPlug-ins
RR
MM
SS
= Record= Record
= Mute= Mute
= Solo= Solo
TrackTrackRR MM SS
monitormonitor
ClipsClips
TrackTrackRR MM SS
monitormonitor
ClipsClips
TrackTrackRR MM SS
monitormonitor
ClipsClips
TrackTrackRR MM SS
monitormonitor
ClipsClips
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 23
What's missing ? (1)What's missing ? (1)● Loop recording (takes)Loop recording (takes)● Dynamic curves / Automation (volume, pan, Dynamic curves / Automation (volume, pan,
plug-in parameters, controllers)plug-in parameters, controllers)● Auto-cross fadingAuto-cross fading● Location markersLocation markers● LV2 Plug-insLV2 Plug-ins● JACK-MIDIJACK-MIDI
2008-11-14Qtractor - SAPO Codebits 2008 - rncbc.org 24
What's missing ? (2)What's missing ? (2)● MIDI Time Code / SMPTEMIDI Time Code / SMPTE● MIDI Clock syncMIDI Clock sync● OSC interfaceOSC interface● Integrated scripting (angelscript?)Integrated scripting (angelscript?)● Tempo and time signature mapTempo and time signature map
● Your suggestion(s) here !Your suggestion(s) here !
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Q & AQ & A
QtractorQtractorAn Audio/MIDI multi-track sequencerAn Audio/MIDI multi-track sequencer
http://qtractor.sourceforge.nethttp://qtractor.sourceforge.net
Qtractor is free / open-source software; you can redistribute it and / Qtractor is free / open-source software; you can redistribute it and / or modify it under the terms of the GNU General Public License or modify it under the terms of the GNU General Public License version 2 or later.version 2 or later.
It is being possible through the knowledgeable, direct and / or It is being possible through the knowledgeable, direct and / or indirect collaborative efforts of the Linux Audio Developers and indirect collaborative efforts of the Linux Audio Developers and Users communities.Users communities.
Thank you all.Thank you all.