AIFF, WAVPack, Monkey's Audio, ASF/WMA, DSF, DSD support

[OxygenCobalt]

With #346, the door is theoretically opened for the addition of more obscure audio formats like those specified in the title. To do this, I would have to:

1. Await SAF-based music loading #322 so I can detect these formats myself. Android isn't really aware of these mime types, so they will consider these files generic "documents" and not include them in the media database.
2. Write my own container parsers for ExoPlayer. ExoPlayer only supports generic container formats, which won't apply to these. This is also where I would implement metadata support for things like APE comments.
3. Plug the codecs into the FFMpeg extension, as there is no native android support for them.

This is relatively low-priority right now.

[OxygenCobalt]

Theoretically, I may try to take this further by effectively gutting most of the ExoPlayer internals and just using FFMpeg for audio decoding and format/metadata parsing. Again, basically what the big proprietary music players do. Depends on how good FFMpeg's metadata support is (i.e Multi-value capabilities).

Edit: This is much harder than I originally thought. I would have to do a huge amount of work in order to get the proper format support set up here.

[dreamsyntax]

Since this is a difficult to implement solution, would you be opposed to a hacky fix that works?

[OxygenCobalt]

If it's sufficiently stable @dreamsyntax.

There is a lot of taped together stuff in Auxio (the bottom sheet system is...rough...), but the end stability is what matters.

[OxygenCobalt]

I think the idea somehow @dreamsyntax would be to make an ExoPlayer Extractor that somehow does everything ExoPlayer expects from one solely through JNI calls to a C++ library that shims over ffmpeg. You don't have to worry about metadata, likely going to switch parsers in #924. If you (or you and Claude 3.5 idk) can figure that out, that would be unironically awesome. It would instantly catapult Auxio to Poweramp-tier format support.

[dreamsyntax]

Not sure who Claude is in this context, but I can give it a try.
No promises on timeline as I don't have experience in this area. I'll at least update when attempted.

I would very much like to be able to play .wma files, and several of my peers would appreciate the feature, so I am motivated.

[OxygenCobalt]

Not sure who Claude is in this context, but I can give it a try.

I was just joking about the AI model 😅, it's pretty helpful as an assistant when you're doing some really exotic stuff you're not familiar with.

[dreamsyntax]

I was just joking about the AI model

Sorry, same here. It was too good to pass up. IMO LLMs usually do more harm than good unless you already generally know a topic, but that debate is offtopic for here :P