Remove tracks that has no note events

[happymimimix]

This is an addon suggestion for remove empty tracks. Not only it removes all the empty tracks but also removes all the tracks that has no note events.
Even when the track is not empty, if it only contains events like pitch bend and volume but no note on or note off, it will be removed.
This is different to include only note events and remove empty tracks selected at the same time.
I still want to keep the pitch bend and volume for the tracks that has note events, not completely removing all CC controllers.

[DixelU]

Yeah, this was an actual feature in early SAFC versions and probably versions 1.0-1.1.
I'll look up if there's something i can do about it :)

I should note though that these events actually affect the notes on that channel, not only the said track. So it wouldn't be as useful.
You could try collapsing the midi, and then make midi channel split (afaik it can be done in one go), and remove empty tracks 🤔

[happymimimix]

Yeah, this was an actual feature in early SAFC versions and probably versions 1.0-1.1. I'll look up if there's something i can do about it :)

I should note though that these events actually affect the notes on that channel, not only the said track. So it wouldn't be as useful. You could try collapsing the midi, and then make midi channel split (afaik it can be done in one go), and remove empty tracks 🤔

I am aware of the events affecting things on that channel not only that track. I know that.
But in some special cases I do need them to be removed.
So please consider adding an additional switch for this.

[happymimimix]

Yeah, this was an actual feature in early SAFC versions and probably versions 1.0-1.1. I'll look up if there's something i can do about it :)

I should note though that these events actually affect the notes on that channel, not only the said track. So it wouldn't be as useful. You could try collapsing the midi, and then make midi channel split (afaik it can be done in one go), and remove empty tracks 🤔

When will you make this alternative empty track removal function a reality? @DixelU

[DixelU]

Dunno, like it could be replicated with running the midi several times through safc

First you separate note events into separate midi
Then you separate all non-note events and enable midi collapse - it will put everything into one track
Then you just inplace merge these two and you have perfectly fine midi with everything you need in the first track :)

[happymimimix]

Dunno, like it could be replicated with running the midi several times through safc

First you separate note events into separate midi Then you separate all non-note events and enable midi collapse - it will put everything into one track Then you just inplace merge these two and you have perfectly fine midi with everything you need in the first track :)

No! That's not what I wanted.

I want this:
Trk 1: note on, note off, note on, note on, note off, note off
Trk 2: pitchbend, volume
Trk 3: note on, note on, volume, note off, note off
Trk 4:
Trk 5: pitchbend

Expected output:
Trk 1: note on, note off, note on, note on, note off, note off
Trk 2: note on, note on, volume, note off, note off

There are specific use cases for this mode. I am aware of the pitchbend and volume event on track 2 being removed, that IS what I'm expecting.
The original remove empty tracks function should not be replaced, I still need that. What I mean here is add an additional switch to let it remove all tracks that has no note events or only remove the tracks that are really empty.

Could you add that switch plz? @DixelU

[DixelU]

@happymimimix This already exists, you just tick these checkboxes

• Remove empty tracks
• Remove pitch bends
• Remove tempo
• Replace all instruments with piano
• Ignore everything except specified

[happymimimix]

@happymimimix This already exists, you just tick these checkboxes

• Remove empty tracks
• Remove pitch bends
• Remove tempo
• Replace all instruments with piano
• Ignore everything except specified

NO! You misunderstood me again.
Doing that would produce this:
Trk 1: note on, note off, note on, note on, note off, note off
Trk 2: pitchbend, volume
Trk 3: note on, note on, volume, note off, note off
Trk 4:
Trk 5: pitchbend
Output:
Trk 1: note on, note off, note on, note on, note off, note off
Trk 2: note on, note on, note off, note off

This is want I want:
Trk 1: note on, note off, note on, note on, note off, note off
Trk 2: pitchbend, volume
Trk 3: note on, note on, volume, note off, note off
Trk 4:
Trk 5: pitchbend
Output:
Trk 1: note on, note off, note on, note on, note off, note off
Trk 2: note on, note on, volume, note off, note off

The volume event on track 3 preserves because track 3 has note events.
But the pitchbend and volume event on track 2 gets removed because track 2 does not have any note events.

[DixelU]

At first I thought that this was implemented in safc v0, but looked up the code and it seems like it doesn't account for non tempo meta events only when checking the emptiness of the track...
Rn it is not quite possible to do that easily in the latest version, as events count isn't tracked
Ofc you could add that yourself, and if it doesn't affect performance, it will get into the next release 👀

[happymimimix]

At first I thought that this was implemented in safc v0, but looked up the code and it seems like it doesn't account for non tempo meta events only when checking the emptiness of the track... Rn it is not quite possible to do that easily in the latest version, as events count isn't tracked Ofc you could add that yourself, and if it doesn't affect performance, it will get into the next release 👀

I of course know checking whether the current track contains note events or not takes a lot more time than simply checking for the emptiness. So I'm asking you to make it into a switch. I can totally tolerate the slightly slower speed if it can do what I wanted.
When I only want to keep the tracks the contain note events and exclude tracks that contain only CC and meta events, I can enable that option.
If I want to keep all meta events and CC, only remove the tracks that are really empty, I can disable that option and theoretically the speed of the normal empty track removal shouldn't be affected.

[happymimimix]

@DixelU hello

[DixelU]

@DixelU hello

Uh, it's not like I'm gonna do that by snapping my fingers.
I have a couple of ideas, but I'm busy rn. Maybe I'll get to it at the end of the week, not earlier :c

[DixelU]

#17