Comment 7 for bug 753301

Cool, what is your plan? Do you have a powerful development environment?
This link should help to set one up.
http://www.mixxx.org/wiki/doku.php/bugfix_workflow

Here some ideas:

To solve this bug, we need a bunch of smaller changes in Mixxx.

We need a way to store downbeats in our BeatGrid and BeatMap classes.
Please keep in mind that only "most" music has a 4/4 measure.

We need a way to render downbeats on the waveform.

We need to investigate if the is a way to detect downbeats (bars).

I think the code is in place to detect the phase offset between beats. You may extend this to get the downbeat offset.

The phase indicator widget, can base on the slider widgets. This can connect to a new phase ControlObject.
Unfortunately we need a high update rate for this, similar to the spinny or the Waveform display.
So you may consider to integrate the phase indicator to the spinny or the waveform.

A GUI Mockup could be helpful to discuss, a scribble with you favorite drawing tool would be fine.

We need a method (workflow) to add the downbeat infos to the track metadata.

It would be great, if we where able to add an auto downbeat detection.
So a research about it would also help a lot.

There is currently a related PR waiting for review.
https://github.com/mixxxdj/mixxx/pull/812
Reading this will help to get into the code. And I would be happy about any comment and test.

You see a lot of places to start. :-)

If you have some other ideas, fine.
Just ask, so that we can give you a helping hand.