I would like to add multiple music formats to the LibGdx library, like .vgm, .mod, .s3m, .xm and so on. I already have the Java code to do so, but it’s hard to integrate it with LibGdx code.

I know there is a backend class named OpenALLwjgl3Audio that has the following code:

    registerSound("ogg", Ogg.Sound.class);
    registerMusic("ogg", Ogg.Music.class);
    registerSound("wav", Wav.Sound.class);
    registerMusic("wav", Wav.Music.class);
    registerSound("mp3", Mp3.Sound.class);
    registerMusic("mp3", Mp3.Music.class);

So it would be nice to call this registerMusic(“vgm”, Vgm.Music.class) from outside this class.

1. Unfortunately, as it is a backend class, I can’t access it from ‘core’ project:

    ((OpenALLwjgl3Audio) Gdx.audio).registerMusic("vgm", Vgm.Music.class);
    => Error: OpenALLwjgl3Audio can't be resolved to a type
   

2. I tried to access the audio variable in the ‘desktop’ project (DesktopLauncher.java), but it is null until the application is instantiated, and then it enter in a loop:

    ((OpenALLwjgl3Audio) Gdx.audio).registerMusic("vgm", Vgm.Music.class);
    => Nullpointer Exception, as audio is null until the code below executes:
    ...
    new Lwjgl3Application(new Game(), config);
   

3. Creating the class Vgm.Music.class in the LibGdx library itself, along with Mp3.class, Ogg.class and so on and edit the OpenALLwjgl3Audio directly. BUT: I would need to use a particular fork of the LibGdx code, as it probably wouldn’t enter in the main develop branch, making it harder to keep my project updated.

Any guidelines to achieve this goal?