Merge pull request #43358 from Faless/js/4.x_audio_latency_fix

[HTML5] Fix audio buffer size and latency hint.

platform/javascript/audio_driver_javascript.cpp

@@ -100,7 +100,7 @@ Error AudioDriverJavaScript::init() {
 	int latency = GLOBAL_GET("audio/output_latency");
 
 	channel_count = godot_audio_init(mix_rate, latency);
-	buffer_length = closest_power_of_2((latency * mix_rate / 1000) * channel_count);
+	buffer_length = closest_power_of_2(latency * mix_rate / 1000);
 	buffer_length = godot_audio_create_processor(buffer_length, channel_count);
 	if (!buffer_length) {
 		return FAILED;

platform/javascript/native/library_godot_audio.js

@@ -47,7 +47,7 @@ var GodotAudio = {
 	godot_audio_init: function(mix_rate, latency) {
 		GodotAudio.ctx = new (window.AudioContext || window.webkitAudioContext)({
 			sampleRate: mix_rate,
-			latencyHint: latency
+			// latencyHint: latency / 1000 // Do not specify, leave 'interactive' for good performance.
 		});
 		return GodotAudio.ctx.destination.channelCount;
 	},