GSoC 2022 Ideas

Student Project Ideas for Google Summer of Code 2022

This page lists the suggested tasks to build a GSoC medium or large project for Google Summer of Code 2022. Please pick one or two of these task and define your own project from it by putting it into a time frame and extend it with our own ideas for improving Mixxx.

If you are interested in applying to GSoC, read GSoC Advice before applying or getting involved. Only students that are active members of the Mixxx community are accepted. If this is not the case yet, just say hello at https://mixxx.zulipchat.com and discuss your Ideas and use cases with us.

Spin-Up/Spin-Down effect

Some Controller mappings have implemented a Spin-Up/Spin-Down to mimic the inertia of a turn table. This should be moved into the engine, so that it is accessible without a controller. https://bugs.launchpad.net/mixxx/+bug/1692261

Fader-Start Feature

Some Controller mappings have implemented a Fader-Start feature. This allows to start a track by pulling the line fader-up. This should be accessible without a controller. https://bugs.launchpad.net/mixxx/+bug/661917

Scratch smoothing.

Our scratching algorithm suffers from jitter noise created by the latency of the midi messages. This can be improved by considering the time stamps of the midi messages. https://bugs.launchpad.net/mixxx/+bug/1157573

Sharp Scratching

Currently crossfader changes are stretched on audio buffer time to avoid pop sounds. This is too long for some scratching styles. https://bugs.launchpad.net/mixxx/+bug/1703475

Resample options

Mixxx uses a linear resample when scratching. This is blazing fast, but the sound can be improved. Here Mixxx should provide more resample options. https://bugs.launchpad.net/mixxx/+bug/1775164

Graceful recovery of controllers

If a controller is accidentally unplugged it has to be manually reconfigured, which is a party stopper. Mixxx should do it automatically.

Graceful syspend/resume support:

Mixxx should be able to continue playing after cumming back from the suspend state of the PC. https://bugs.launchpad.net/mixxx/+bug/1744641

Graceful recovery of soundcards

If a soundcard is unplugged it has to be manually reconfigured, which is a party stopper. Mixxx should do it automatically. https://bugs.launchpad.net/mixxx/+bug/364803

Auto Updater for Windows and MacOs

Mixxx should look up our download page and automatically update itself in case an update is available.

Track suggestion feature

Mixxx shall suggest compatible tracks matching the current playing one. The feature may use existing meta data like bpm genre and key or tab online resources like LastFM and similar. https://bugs.launchpad.net/mixxx/+bug/889898

Transpose / Pitch shift effect

There should be an independent effect for pitch shifting. This should be implemented as a freely iterated effect. https://bugs.launchpad.net/mixxx/+bug/1299035

Native Jack/Pipewire client

Currently the sound devices are directly accessed through the jack API. This should be changed to a mode where Mixxx exposes all outputs a Jack ports ready to be routed with an external tool like QJackCtrl https://bugs.launchpad.net/mixxx/+bug/1172299

Something Else!

As always with Summer of Code, you aren't limited to the suggestions we've made here. If you've got a great idea for a project involving Mixxx then we're looking forward to hearing about it. We recommend spending more than a few days using Mixxx and participating in the community to develop a better understanding of areas where Mixxx could use improvement. Our bug tracker is full of wishlist bugs and other ideas scattered throughout, so if you browse through it, you may find many more ideas for GSoC projects.

IMPORTANT: You should contact us first to get feedback if you're going to submit a proposal for your own project idea! We very rarely approve ideas students propose. If you're not already experienced with DJ equipment, we recommend sticking with one of the ideas above.