Spaces:
Running
Running
Delete hey-buddy-worklet.js
Browse files- hey-buddy-worklet.js +0 -86
hey-buddy-worklet.js
DELETED
@@ -1,86 +0,0 @@
|
|
1 |
-
/** @module worklet */
|
2 |
-
|
3 |
-
// Called with `audioWorker.addModule('worklet.js')`
|
4 |
-
// Defines the following global variables:
|
5 |
-
// - sampleRate
|
6 |
-
// - registerProcessor
|
7 |
-
|
8 |
-
/**
|
9 |
-
* The `Processor` class is an AudioWorkletProcessor that resamples the input audio to a target sample rate.
|
10 |
-
*/
|
11 |
-
class Processor extends AudioWorkletProcessor {
|
12 |
-
/**
|
13 |
-
* @param {object} options - The options object.
|
14 |
-
* @param {object} options.processorOptions - The processor options object.
|
15 |
-
* @param {number} options.processorOptions.targetSampleRate - The target sample rate.
|
16 |
-
*/
|
17 |
-
constructor(options) {
|
18 |
-
super(options);
|
19 |
-
this.targetSampleRate = options.processorOptions.targetSampleRate;
|
20 |
-
this.inputBuffer = new Float32Array(this.inputFrameSize);
|
21 |
-
this.inputBufferSize = 0;
|
22 |
-
this.outputBuffer = new Float32Array(this.targetFrameSize);
|
23 |
-
}
|
24 |
-
|
25 |
-
/**
|
26 |
-
* The size of the input frame.
|
27 |
-
* @type {number}
|
28 |
-
*/
|
29 |
-
get inputFrameSize() {
|
30 |
-
return Math.round(sampleRate / 50);
|
31 |
-
}
|
32 |
-
|
33 |
-
/**
|
34 |
-
* The size of the target frame.
|
35 |
-
* @type {number}
|
36 |
-
*/
|
37 |
-
get targetFrameSize() {
|
38 |
-
return Math.round(this.targetSampleRate / 50);
|
39 |
-
}
|
40 |
-
|
41 |
-
/**
|
42 |
-
* Flushes the input buffer to the output buffer, resampling the audio.
|
43 |
-
* Then sends the output buffer to the main thread using the port.
|
44 |
-
*/
|
45 |
-
async flush() {
|
46 |
-
const ratio = sampleRate / this.targetSampleRate;
|
47 |
-
this.outputBuffer.fill(0);
|
48 |
-
for (let i = 0; i < this.targetFrameSize; i++) {
|
49 |
-
const index = i * ratio;
|
50 |
-
const left = Math.floor(index);
|
51 |
-
const right = Math.min(left + 1, this.targetFrameSize - 1);
|
52 |
-
const weight = index - left;
|
53 |
-
this.outputBuffer[i] = this.inputBuffer[left] * (1 - weight) + this.inputBuffer[right] * weight;
|
54 |
-
}
|
55 |
-
await this.port.postMessage(this.outputBuffer);
|
56 |
-
}
|
57 |
-
|
58 |
-
/**
|
59 |
-
* Pushes audio to the input buffer.
|
60 |
-
* @param {Float32Array} inputArray - The input audio.
|
61 |
-
*/
|
62 |
-
pushAudio(inputArray) {
|
63 |
-
const inputLength = inputArray.length;
|
64 |
-
const remainingLength = this.inputFrameSize - this.inputBufferSize;
|
65 |
-
if (inputLength < remainingLength) {
|
66 |
-
this.inputBuffer.set(inputArray, this.inputBufferSize);
|
67 |
-
this.inputBufferSize += inputLength;
|
68 |
-
return;
|
69 |
-
}
|
70 |
-
this.inputBuffer.set(inputArray.subarray(0, remainingLength), this.inputBufferSize);
|
71 |
-
this.flush();
|
72 |
-
this.inputBufferSize = 0;
|
73 |
-
this.pushAudio(inputArray.subarray(remainingLength));
|
74 |
-
}
|
75 |
-
|
76 |
-
/**
|
77 |
-
* Processes the input audio (the main worklet loop).
|
78 |
-
*/
|
79 |
-
process(inputArray, outputArray, parameters) {
|
80 |
-
this.pushAudio(inputArray[0][0]);
|
81 |
-
return true;
|
82 |
-
}
|
83 |
-
}
|
84 |
-
|
85 |
-
// Registers the processor with the name "hey-buddy".
|
86 |
-
registerProcessor("hey-buddy", Processor);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|