Development Roadmap

Development Roadmap

Main Design Principles

These are some core goals which are critical for Mixxx to become a world-class application, somewhat in order of importance:

• Stability - Having a stable platform for DJs to work from is key
• Performance - Optimize latency over throughput
• Support a good level of latency for as many configurations as possible
• Follow Real-time application design principles which will result in optimal latency even on non-RT systems.
• Follow the C++ software optimization guide to choose data and program structures that will compile into the most efficient code.
• Usability - Most functions must be bonehead-easy to use. The manual must not be required reading!
• Good hardware support
• For as many devices as possible
• With easiest possible setup
• Support all likely input formats
• Features
• Should be guided by feedback from DJs
• Great care should be taken to ensure that stability is not compromised by new features
• Mixxx doesn't need to make the coffee, features should demonstrably improve the user experience

Release Schedule

1.7.3

Bug-fix release. See https://launchpad.net/mixxx/+milestone/1.7.3 May be bumped by 1.8.0 release.

1.8.0

// Release Schedule //

• Nov 16 2009 -- Feature Freeze
• Feb 5 2010 -- private(-ish) beta testing
• Feb 15 2010 -- Mixxx 1.8.0 Beta 1
• Mar 2010 -- Mixxx 1.8.0 Final

We're trying to sync up with the Ubuntu release cycle. Feature freeze for Lucid Lynx is February 18th, 2010.

To-do list

New main features:

• Looping
• New Library
• True Pitchbend
• Multiple MIDI device support
• Shoutcast
• M4A support

Side Projects

• Build Server!
• Test Evangelism
• SConscript Refactor

Bugs fixed: https://bugs.launchpad.net/mixxx/+milestone/1.8.0

1.9.0 .. 1.10.0 ?

Release Date: September 2010

Under the Hood Improvements

• Revamped Control System
• SSE Enhanced Engine
• Timing engine
• Rubber Band support
• BPM detection rework

New Features

• LADSPA/LV2 Effects
• DVS mode
• n-Deck
• External Mixer Mode
• Incremental Library Enhancements (e.g. inline track previews)

???.???

Please don't add new features here unless there is a specification for them. To add to the list of ideas that would be cool in Mixxx, add them to feature_discussion or file a Wishlist bug at Launchpad.

Random ideas for new features:

• Skinning Engine
• Single-Deck Vinyl Control
• Internationalization, see also Qt Linguist and Launchpad translations
• Performance improvements
• Macro/script playback
• Sampler
• Inline track previews

Previous Release Roadmaps

1.7.0

Released August 6, 2009

1.7.0 to do list (historical)

New features:

• MIDI Learning
• MIDI Scripting
• Support for new controllers added, see the hardware compatibility page
• Some performance improvements

Bugs fixed: See https://launchpad.net/mixxx/+milestone/1.7.0

Changelog

Since Mixxx 1.6.0 was released, the following changes have been made:

• MIDI Scripting functionality has been added
• MIDI Learning functionality has been added

---

Since Mixxx 1.5.0 was released (March 4th, 2007), the following changes have been made:

• New MIDI mappings for Tascam US-428, M-Audio X-Session Pro, Evolution X-Session, FaderFox DJ2, and the M-Audio Torq Xponent
• ALSA Sequencer MIDI support courtesy of Cedric Gestes
• A couple of MIDI bug fixes (knobs now center properly, thanks to Sacha Berger)
• Added support for 14-bit MIDI pitch wheel controllers (thanks to Adam Sugerman)
• Hercules support on Linux improved (jog wheels work again)
• New nCut skin from Frank Willascheck
• (Trancer skin?)
• Big stability improvements (3 bug fixes)
• Multiple soundcards can now be used for output (master/headphones), in case you don't have a soundcard with 4 outputs on it.
• Adam's wicked colour scheme support for skins
• Can now change skins without restarting Mixxx (more hard work from Adam)
• Channel VU meters are now pre-fader
• VU meters are now much more smooth
• Added clipping indicators (courtesy of John Sully)
• Higher quality EQs and other sound quality improvements (also from John Sully)
• Adjustable EQ shelves
• New MIDI mapping format now in XML, supports controlling LEDs
• Better Hercules support on Windows and Linux
• Initial support for recording output
• New BPM detection algorithm (Micah Lee/GSoC)
• New media library (Nathan Prado/GSoC)
• LADSPA effects support (Pawel Bartkiewicz/GSoC)
• BPM Tap tempo
• Library search function
• Ported to QT4 (!)
• Moved build system to SCONS
• Redesigned preferences dialogs
• Rewritten audio core (Albert)
• Vinyl control support for Serato, Traktor Scratch, and FinalScratch (FS needs work, but the others are good)
• Software preamp for vinyl control (can use turntables without a preamp)
• Track info editor (double-click in library)
• New library browse mode (CTAF)
• Starts in fullscreen mode if launched with the -f flag.
• Several MP3 decoder performance and stability improvements (John Sully)
• Support for merengue
• Reorganized "File" menu
• NEXT mode now works as expected (plays the next track in the table)
• Lots of little OS X improvements
• Improved consistency of fullscreen mode
• Customizable constant power crossfader curve
• Slow fade and fast cut crossfader curves
• Play queue
• Revamped playlist interface, editing
• Experimental Shoutcast support
• Somewhat intelligent library rescanning