[RFC] Add TASing functions to RMG

[jgcodes2020]

The SM64 TASing community currently uses this to make TASes: mkdasher/mupen64-rr-lua-

The features we've added over the emulator include:

• input recording and playback
• direct video capture from the emulator
• Lua-based custom scripting

We've been considering rebasing our tools on Mupen64Plus for a while now; this seems like a good base for it. Is this project willing to take such features upstream, or should they stay in a fork?

[Rosalie241]

I'm not sure what kinda features you're planing to add or where, could you clarify it a little?

I'd also like to mention that RMG uses upstream mupen64plus-core mainly, though sometimes I merge pending PRs for RMG myself while we wait for the slow upstream maintainers to merge it.

If you're talking about adding UI features to RMG then I wouldn't mind including those optionally behind a compile time option, though there will need to be some form of discussion.

[jgcodes2020]

I'm not sure what kinda features you're planing to add or where, could you clarify it a little?

Basically, the things I mentioned above:

1. Record input sequences to a file (optionally with a savestate where the file's inputs start), and to play those sequences back later.
2. Encode the emulator's output (audio/video) directly to a video file
3. A scripting system that can be used to automate specific actions within the emulator, or to render overlays on top of it (our old one used Lua)

• Item 1 requires some features to be implemented into upstream core, which I plan to do.
• Item 2 either requires me to merge some features into core, or add extra hooks into RMG-Audio to extract audio data. I'd also need to depend on FFmpeg for the video encoding functionality.
• Item 3 would be implemented entirely on the frontend; probably in a new folder called RMG-Scripting or the like.

[Rosalie241]

Those general ideas sound fine to me, as long as they're a compile time build option I won't have an objection to having it upstream here as long as you're not expecting me to maintain those parts by myself which is hopefully understandable!