-
Notifications
You must be signed in to change notification settings - Fork 2
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
11 changed files
with
14,579 additions
and
1 deletion.
There are no files selected for viewing
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,213 @@ | ||
/**************************************************************************/ | ||
/* audio.worklet.js */ | ||
/**************************************************************************/ | ||
/* This file is part of: */ | ||
/* GODOT ENGINE */ | ||
/* https://godotengine.org */ | ||
/**************************************************************************/ | ||
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ | ||
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ | ||
/* */ | ||
/* Permission is hereby granted, free of charge, to any person obtaining */ | ||
/* a copy of this software and associated documentation files (the */ | ||
/* "Software"), to deal in the Software without restriction, including */ | ||
/* without limitation the rights to use, copy, modify, merge, publish, */ | ||
/* distribute, sublicense, and/or sell copies of the Software, and to */ | ||
/* permit persons to whom the Software is furnished to do so, subject to */ | ||
/* the following conditions: */ | ||
/* */ | ||
/* The above copyright notice and this permission notice shall be */ | ||
/* included in all copies or substantial portions of the Software. */ | ||
/* */ | ||
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ | ||
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ | ||
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */ | ||
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ | ||
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ | ||
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ | ||
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ | ||
/**************************************************************************/ | ||
|
||
class RingBuffer { | ||
constructor(p_buffer, p_state, p_threads) { | ||
this.buffer = p_buffer; | ||
this.avail = p_state; | ||
this.threads = p_threads; | ||
this.rpos = 0; | ||
this.wpos = 0; | ||
} | ||
|
||
data_left() { | ||
return this.threads ? Atomics.load(this.avail, 0) : this.avail; | ||
} | ||
|
||
space_left() { | ||
return this.buffer.length - this.data_left(); | ||
} | ||
|
||
read(output) { | ||
const size = this.buffer.length; | ||
let from = 0; | ||
let to_write = output.length; | ||
if (this.rpos + to_write > size) { | ||
const high = size - this.rpos; | ||
output.set(this.buffer.subarray(this.rpos, size)); | ||
from = high; | ||
to_write -= high; | ||
this.rpos = 0; | ||
} | ||
if (to_write) { | ||
output.set(this.buffer.subarray(this.rpos, this.rpos + to_write), from); | ||
} | ||
this.rpos += to_write; | ||
if (this.threads) { | ||
Atomics.add(this.avail, 0, -output.length); | ||
Atomics.notify(this.avail, 0); | ||
} else { | ||
this.avail -= output.length; | ||
} | ||
} | ||
|
||
write(p_buffer) { | ||
const to_write = p_buffer.length; | ||
const mw = this.buffer.length - this.wpos; | ||
if (mw >= to_write) { | ||
this.buffer.set(p_buffer, this.wpos); | ||
this.wpos += to_write; | ||
if (mw === to_write) { | ||
this.wpos = 0; | ||
} | ||
} else { | ||
const high = p_buffer.subarray(0, mw); | ||
const low = p_buffer.subarray(mw); | ||
this.buffer.set(high, this.wpos); | ||
this.buffer.set(low); | ||
this.wpos = low.length; | ||
} | ||
if (this.threads) { | ||
Atomics.add(this.avail, 0, to_write); | ||
Atomics.notify(this.avail, 0); | ||
} else { | ||
this.avail += to_write; | ||
} | ||
} | ||
} | ||
|
||
class GodotProcessor extends AudioWorkletProcessor { | ||
constructor() { | ||
super(); | ||
this.threads = false; | ||
this.running = true; | ||
this.lock = null; | ||
this.notifier = null; | ||
this.output = null; | ||
this.output_buffer = new Float32Array(); | ||
this.input = null; | ||
this.input_buffer = new Float32Array(); | ||
this.port.onmessage = (event) => { | ||
const cmd = event.data['cmd']; | ||
const data = event.data['data']; | ||
this.parse_message(cmd, data); | ||
}; | ||
} | ||
|
||
process_notify() { | ||
if (this.notifier) { | ||
Atomics.add(this.notifier, 0, 1); | ||
Atomics.notify(this.notifier, 0); | ||
} | ||
} | ||
|
||
parse_message(p_cmd, p_data) { | ||
if (p_cmd === 'start' && p_data) { | ||
const state = p_data[0]; | ||
let idx = 0; | ||
this.threads = true; | ||
this.lock = state.subarray(idx, ++idx); | ||
this.notifier = state.subarray(idx, ++idx); | ||
const avail_in = state.subarray(idx, ++idx); | ||
const avail_out = state.subarray(idx, ++idx); | ||
this.input = new RingBuffer(p_data[1], avail_in, true); | ||
this.output = new RingBuffer(p_data[2], avail_out, true); | ||
} else if (p_cmd === 'stop') { | ||
this.running = false; | ||
this.output = null; | ||
this.input = null; | ||
this.lock = null; | ||
this.notifier = null; | ||
} else if (p_cmd === 'start_nothreads') { | ||
this.output = new RingBuffer(p_data[0], p_data[0].length, false); | ||
} else if (p_cmd === 'chunk') { | ||
this.output.write(p_data); | ||
} | ||
} | ||
|
||
static array_has_data(arr) { | ||
return arr.length && arr[0].length && arr[0][0].length; | ||
} | ||
|
||
process(inputs, outputs, parameters) { | ||
if (!this.running) { | ||
return false; // Stop processing. | ||
} | ||
if (this.output === null) { | ||
return true; // Not ready yet, keep processing. | ||
} | ||
const process_input = GodotProcessor.array_has_data(inputs); | ||
if (process_input) { | ||
const input = inputs[0]; | ||
const chunk = input[0].length * input.length; | ||
if (this.input_buffer.length !== chunk) { | ||
this.input_buffer = new Float32Array(chunk); | ||
} | ||
if (!this.threads) { | ||
GodotProcessor.write_input(this.input_buffer, input); | ||
this.port.postMessage({ 'cmd': 'input', 'data': this.input_buffer }); | ||
} else if (this.input.space_left() >= chunk) { | ||
GodotProcessor.write_input(this.input_buffer, input); | ||
this.input.write(this.input_buffer); | ||
} else { | ||
this.port.postMessage('Input buffer is full! Skipping input frame.'); | ||
} | ||
} | ||
const process_output = GodotProcessor.array_has_data(outputs); | ||
if (process_output) { | ||
const output = outputs[0]; | ||
const chunk = output[0].length * output.length; | ||
if (this.output_buffer.length !== chunk) { | ||
this.output_buffer = new Float32Array(chunk); | ||
} | ||
if (this.output.data_left() >= chunk) { | ||
this.output.read(this.output_buffer); | ||
GodotProcessor.write_output(output, this.output_buffer); | ||
if (!this.threads) { | ||
this.port.postMessage({ 'cmd': 'read', 'data': chunk }); | ||
} | ||
} else { | ||
this.port.postMessage('Output buffer has not enough frames! Skipping output frame.'); | ||
} | ||
} | ||
this.process_notify(); | ||
return true; | ||
} | ||
|
||
static write_output(dest, source) { | ||
const channels = dest.length; | ||
for (let ch = 0; ch < channels; ch++) { | ||
for (let sample = 0; sample < dest[ch].length; sample++) { | ||
dest[ch][sample] = source[sample * channels + ch]; | ||
} | ||
} | ||
} | ||
|
||
static write_input(dest, source) { | ||
const channels = source.length; | ||
for (let ch = 0; ch < channels; ch++) { | ||
for (let sample = 0; sample < source[ch].length; sample++) { | ||
dest[sample * channels + ch] = source[ch][sample]; | ||
} | ||
} | ||
} | ||
} | ||
|
||
registerProcessor('godot-processor', GodotProcessor); |
Loading
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
Oops, something went wrong.