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| 1 | +/**************************************************************************/ |
| 2 | +/* godot.audio.position.worklet.js */ |
| 3 | +/**************************************************************************/ |
| 4 | +/* This file is part of: */ |
| 5 | +/* GODOT ENGINE */ |
| 6 | +/* https://godotengine.org */ |
| 7 | +/**************************************************************************/ |
| 8 | +/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ |
| 9 | +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ |
| 10 | +/* */ |
| 11 | +/* Permission is hereby granted, free of charge, to any person obtaining */ |
| 12 | +/* a copy of this software and associated documentation files (the */ |
| 13 | +/* "Software"), to deal in the Software without restriction, including */ |
| 14 | +/* without limitation the rights to use, copy, modify, merge, publish, */ |
| 15 | +/* distribute, sublicense, and/or sell copies of the Software, and to */ |
| 16 | +/* permit persons to whom the Software is furnished to do so, subject to */ |
| 17 | +/* the following conditions: */ |
| 18 | +/* */ |
| 19 | +/* The above copyright notice and this permission notice shall be */ |
| 20 | +/* included in all copies or substantial portions of the Software. */ |
| 21 | +/* */ |
| 22 | +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ |
| 23 | +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ |
| 24 | +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */ |
| 25 | +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ |
| 26 | +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ |
| 27 | +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ |
| 28 | +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ |
| 29 | +/**************************************************************************/ |
| 30 | + |
| 31 | +const POST_THRESHOLD_S = 0.1; |
| 32 | + |
| 33 | +class GodotPositionReportingProcessor extends AudioWorkletProcessor { |
| 34 | + constructor(...args) { |
| 35 | + super(...args); |
| 36 | + this.lastPostTime = currentTime; |
| 37 | + this.position = 0; |
| 38 | + this.ended = false; |
| 39 | + |
| 40 | + this.port.onmessage = (event) => { |
| 41 | + if (event?.data?.type === 'ended') { |
| 42 | + this.ended = true; |
| 43 | + } |
| 44 | + }; |
| 45 | + } |
| 46 | + |
| 47 | + process(inputs, _outputs, _parameters) { |
| 48 | + if (this.ended) { |
| 49 | + return false; |
| 50 | + } |
| 51 | + |
| 52 | + if (inputs.length > 0) { |
| 53 | + const input = inputs[0]; |
| 54 | + if (input.length > 0) { |
| 55 | + this.position += input[0].length; |
| 56 | + } |
| 57 | + } |
| 58 | + |
| 59 | + // Posting messages is expensive. Let's limit the number of posts. |
| 60 | + if (currentTime - this.lastPostTime > POST_THRESHOLD_S) { |
| 61 | + this.lastPostTime = currentTime; |
| 62 | + this.port.postMessage({ type: 'position', data: this.position }); |
| 63 | + } |
| 64 | + |
| 65 | + return true; |
| 66 | + } |
| 67 | +} |
| 68 | + |
| 69 | +registerProcessor('godot-position-reporting-processor', GodotPositionReportingProcessor); |
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