Add waveform overview as possible library column

[Owen Williams]

It would be nice to see an RGB waveform overview as a library column, like cover art. We could reuse most of the coverart code and use the waveform generator code to generate a small png file.

[jus (jus)]

I`d like to see that too, but according to a previous discussion, it was kinda dismissed.
See https://bugs.launchpad.net/mixxx/+bug/1074392

[Owen Williams (ywwg)]

Resurrecting this, because I know other DJ apps have this feature. Our RGB overviews would translate well for this purpose, and we already have a cover art column so it shouldn't be too hard to implement.

[Be (be.ing)]

I think this is a nice idea. I am questioning how it would perform when scrolling in the library table. Prerendering PNGs would help, but it could also use a lot of storage space and won't resize smoothly.

[ronso0 (ronso0)]

Will a real waveform realy be helpful in the tracks table?
I mean, can the amplitude be recognized or should we use something simpler like a moodbar
http://en.wikipedia.org/wiki/Moodbar
lp:1074392

[Be (be.ing)]

I saw a DJ using this with Rekordbox the other day and thought it would be really helpful. Rekordbox also shows the cue points in this overview. Here is a screenshot: https://rekordbox.com/assets/img/function/func_dj_4deck_h.png

[Be (be.ing)]

Here is a video tutorial about this feature in Rekordbox:
https://www.youtube.com/watch?v=xurbCv8XKM0
This would be super useful. I think we should replace the current preview deck GUI with this.

[Jan Holthuis (holthuis-jan)]

This would be really nice. It's also a feature in Denon Engine Prime AFAIK.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/8207