[LMMS-devel] Looking for things to do?

[Vesa <di...@nb...>]

Couple of bugs in master branch which should be easy to fix. I'd fix
them myself, but I thought this would be a good opportunity for our
newer developers to get a bit more familiar with our codebase -
especially the core part of it, not just the GUI.

#1 - track muting doesn't work
Probably caused by recent changes in NotePlayHandles and AudioPorts. I
think this can be fixed in AudioPort, where all the NPH's output is
mixed to the AudioPort - add a check if the instrument track that is
associated with the AudioPort is muted, and if so, skip the processing
of the AudioPort, including its fx chain, and don't write its output to
the FxMixer.

#2 - adding new instrument tracks while song is playing sometimes causes
LMMS to hang
Might be a bit trickier, this one I think has to do with threading and
thread affinity - might need to look into Qt docs for this one. However,
don't let that scare you, it's a great opportunity to learn about Qt
here. I suggest looking into TrackContainer for starters.

#3 - noise at the end when playing sample previews
This should be very easy to fix. Look into SamplePlayHandle - there's
some part where the end of the buffer isn't cleared when the sample ends
mid-buffer, leaving some random data in the audio buffer. A simple
memset in the right place should fix this.

I don't think any of these have github issues yet, so please notify here
if you want to work on one of these, to prevent duplicate work. First
come, first served!