[3.2][HTML5] Port inline JS code to libraries, AudioWorklet support. #43454
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The size of the audio buffer was incorrectly doubled when creating the script processor. latencyHint is expressed in seconds, not milliseconds. Additionally, on some browsers it actually affect the performance and stability of the audio driver. For this reason it has been completely disabled (interactive) and a not has been left for future reference.
The API is implemented in javascript, and generates C functions that can be called from godot. This allows much cleaner code replacing all `EM_ASM` calls in our C++ code with plain C function calls. This also gets rid of few hacks and comes with few optimizations (e.g. custom cursor shapes should be much faster now).
Rewrote AudioDriverJavaScript to support multiple processor nodes. The old (and deprecated) ScriptProcessorNode when threads are not available, and the new AudioWorklet API when threads are enabled. The new implementation uses two ring buffers and a shared state to communicated with the AudioWorklet thread. The audio.worklet.js JavaScript file is always added to the export template, but only really used (and download) in the thread build.
Yes, the |
akien-mga
approved these changes
Nov 11, 2020
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Thanks! |
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3.2version of: #43358 + #43443 .This PR introduces some C++11 style (member initializers) to the JavaScript platform code (which I understand is fine), so the audio driver is almost the same in
4.0and3.2in an effort to make cherry picking easier, though not necessarily completely straight-forward.