Sample track standalone recorder

[Reflexe]

Hello guys,

I'm currently working on a standalone sound recorder for LMMS. Most of the code is already there (SampleRecordHandle). The only thing I've implemented is the actual recording for each device type (e.g. ALSA, JACK, ...).

Surprisingly, for JACK, it was pretty trivial so now JACK and PortAudio support recording and therefore support sample track recording too.

Just before I take another step, am I doing it right? Way was this feature disabled?

Thank you all :)

[tresf]

@Reflexe thanks for running with this! In regards to why the feature was removed, I don't think any of the current project maintainers were around when that decision was made. The feature was added 9 years ago by the original author, Toby but it appears to have been coded by Csaba Hruska: 1410f2b.

Thanks for the warm welcome. We're also over on Discord in the #devtalk channel if you wish to use that as a medium as well.

Related: #1471

[Reflexe]

OK. I think I learnt a few things in the last few years. One of which is how to manage tasks.

The output of this task should be a series of PRs that looks like:

• Infra/Core modifications for recordings
• Add recording support for a backend as a proof of concept

Afterwards, we will many ways to improve from:

• Add recording to more backends
• Add on-the-fly visualization support
• Refactor recording to use a ringbuffer
• Refactor SampleBuffer to use std::vector instead of the current mess
• etc

I am currently looking on the code and trying to do some cherry-picking for the first stage (I have some free time finally :))

[qnebra]

I think "on-the-fly visualisation support" could be easier due to 'soon to be merged' @douglasdgi overhaul of how sample tracks are visualised.

[Reflexe]

@qnebra Can you please link the PR? Thanks

[LostRobotMusic]

#5927