WIP: avm2,audio: Implement SampleDataEvent

[torokati44]

Fixes: #14156
Also fixes z0r.de loops: 5885, 7024 (issue #7879), 7312
Probably fixes (to be tested): #9171, #13655

It's quite rough (full of unwrap()s for example, and overall unfinished) but it "just started working".

Mostly pushing to show that it's in progress - any ideas on how to improve the architecture are welcome.

An unexpected (to me at least) problem is that sound synthesis in AS3 needs to do quite a lot of math really fast, so on my machine, even in release mode, the content linked above could barely keep up with real time sound generation, or not at all. Profiling and optimization is yet to be done (probably related: #7920).

[SN902]

Most NSFW video games depend on this commit, here still no any SFX, but now they panics after the end of the first loop (need to wait for the issue reproduction)

Twi_Armor.zip

thread 'main' panicked at 'not too many sounds: TooManySounds', core\src\avm2\globals\flash\media\sound.rs:179:14 note: run with RUST_BACKTRACE=1environment variable to display a backtrace AVM2 stack trace: at flash.media::Sound/flash::media::Sound::play() at mp3pl::MP3Player/play() at appleblitz_fla::MainTimeline/playsounds() at appleblitz_fla::MainTimeline/loopend() at appleblitz_fla::MainTimeline/frame1() error: process didn't exit successfully:target\release\ruffle_desktop.exe (exit code: 0xc0000409, STATUS_STACK_BUFFER_OVERRUN)

upd: here one my favorite chiptune site, music is playing http://zxtunes.com/author.php?id=446&sort=playing :D

[torokati44]

TBD:

• verify that the architecture is correct - the load_called method, how AudioManager and AudioBackend and Mixer keep track of what, the new stream types, etc.
• test all the games/animations mentioned above, and actually make them work properly
• some kind of regression test
• see if any more events need to be dispatched

[Lord-McSweeney]

Shouldn't failing to read a float result in the read loop terminating early?

[torokati44]

that is to be tested :|