Audio effect stream

[fire]

Describe the project you are working on:

Unreleased game.

Describe the problem or limitation you are having in your project:

VOIP support is crucial to the game's use.

Describe how this feature / enhancement will help you overcome this problem or limitation:

The previous pull requests by Saracen have been reverted.

godotengine/godot#30468 (comment)

The goal is to get specific sized chunks from a ring buffer saving the current effect.

The effect streams the current bus so that we get either zero or equally sized vector of floats in left / right format. This allows something like opus to have same sized buffers to use as input for VOIP.

This is an audio server implementation.

Show a mock up screenshots/video or a flow diagram explaining how your proposal will work:

None.

Describe implementation detail for your proposal (in code), if possible:

See description. See pull request godotengine/godot#35402

If this enhancement will not be used often, can it be worked around with a few lines of script?:

Effects can only be written in the core engine. The script approach causes stuttering.

Is there a reason why this should be core and not an add-on in the asset library?:

Effects can only be written in the core engine.