Add a way to control when a playing track is added to History when using external mixers

[jonahclarsen]

Feature Description

I don't use the faders in Mixxx, I just have both decks feed into different Ableton Live tracks using virtual cables and fade between them there. Thus, Mixxx has no idea that when I queue a song and start playing it for a few seconds, it's only in my headphones and shouldn't be added to the history. Thus, as I'm browsing my library and trying to find a good song to play next, even if I listen to a song for only a few seconds, it gets added to the history, so the history ends up having a lot of songs that weren't actually in my set, which adds a lot of manual labor (and room for error) in creating playlists of past sets.

I think this would be quite easily remedied if I could change the "playtime until a song is added to history" that I'm guessing is hard-coded right now. It seems like right now it's around 2-5 seconds, personally I think I'd set it to more like 30-60s, but it would be great to have it fully customizable in settings.

Even if someone could point me to where this value is in the code so I could modify it on my own fork and build it myself, that would be awesome!

[Swiftb0y]

There is no playtime until song is added to history. Take a look at PlayerInfo::updateCurrentPlayingDeck() I'm sure you can hack some heuristic that suits you in there.

[jonahclarsen]

There is no playtime until song is added to history. Take a look at PlayerInfo::updateCurrentPlayingDeck() I'm sure you can hack some heuristic that suits you in there.

Sorry, I might have not been super clear. I'm not concerned with the "playtime" in the history at all, but rather how long it takes from when I start to play a song to when it gets added to the history. I would prefer if I could preview a song by playing it for 20-30 seconds before it's added to the history (as already seems to happen if you play a song for <2s or so, I just want to change that ~"2 second" value to ~30s).

[ronso0]

The magic happens in PlayerInfo:
there is an auto-repeating timer with a timeout of 2 seconds, and the timerEvent() calls PlayerInfo::updateCurrentPlayingDeck(). This tries to figure if the playing deck changed and eventually emits a signal which, amongst other things, add that deck's track to the History.

Since with an external mixer the corssfader and Volume faders all remain in their initial position (center & full yopen), and there's usually no other feedback from the mixer, every track that's played is added.

[jonahclarsen]

Ah, I see now, thanks. So I guess if it's on a self-repeating timer of 2 seconds, it's not going to be as simple as changing the interval time, although it would at least improve the situation somewhat. Thanks for your help.

[ronso0]

I might be wrong: looks like same happens when a track is loaded.

Not sure if setting another timeout will fix it.

[ronso0]

Dupe / related: #11148