61 lines
2.3 KiB
TypeScript
61 lines
2.3 KiB
TypeScript
/**
|
|
* Copyright (c) 2018 The xterm.js authors. All rights reserved.
|
|
* @license MIT
|
|
*/
|
|
|
|
import { ITerminal, ISoundManager } from './Types';
|
|
|
|
// Source: https://freesound.org/people/altemark/sounds/45759/
|
|
// This sound is released under the Creative Commons Attribution 3.0 Unported
|
|
// (CC BY 3.0) license. It was created by 'altemark'. No modifications have been
|
|
// made, apart from the conversion to base64.
|
|
export const DEFAULT_BELL_SOUND = 'data:audio/wav;base64,UklGRigBAABXQVZFZm10IBAAAAABAAEARKwAAIhYAQACABAAZGF0YQQBAADpAFgCwAMlBZoG/wdmCcoKRAypDQ8PbRDBEQQTOxRtFYcWlBePGIUZXhoiG88bcBz7HHIdzh0WHlMeZx51HmkeUx4WHs8dah0AHXwc3hs9G4saxRnyGBIYGBcQFv8U4RPAEoYRQBACD70NWwwHC6gJOwjWBloF7gOBAhABkf8b/qv8R/ve+Xf4Ife79W/0JfPZ8Z/wde9N7ijtE+wU6xvqM+lb6H7nw+YX5mrlxuQz5Mzje+Ma49fioeKD4nXiYeJy4pHitOL04j/jn+MN5IPkFOWs5U3mDefM55/ogOl36m7rdOyE7abuyu8D8Unyj/Pg9D/2qfcb+Yn6/vuK/Qj/lAAlAg==';
|
|
|
|
export class SoundManager implements ISoundManager {
|
|
private _audioContext: AudioContext;
|
|
|
|
constructor(
|
|
private _terminal: ITerminal
|
|
) {
|
|
}
|
|
|
|
public playBellSound(): void {
|
|
const audioContextCtor: typeof AudioContext = (<any>window).AudioContext || (<any>window).webkitAudioContext;
|
|
if (!this._audioContext && audioContextCtor) {
|
|
this._audioContext = new audioContextCtor();
|
|
}
|
|
|
|
if (this._audioContext) {
|
|
const bellAudioSource = this._audioContext.createBufferSource();
|
|
const context = this._audioContext;
|
|
this._audioContext.decodeAudioData(this._base64ToArrayBuffer(this._removeMimeType(this._terminal.options.bellSound)), (buffer) => {
|
|
bellAudioSource.buffer = buffer;
|
|
bellAudioSource.connect(context.destination);
|
|
bellAudioSource.start(0);
|
|
});
|
|
} else {
|
|
console.warn('Sorry, but the Web Audio API is not supported by your browser. Please, consider upgrading to the latest version');
|
|
}
|
|
}
|
|
|
|
private _base64ToArrayBuffer(base64: string): ArrayBuffer {
|
|
const binaryString = window.atob(base64);
|
|
const len = binaryString.length;
|
|
const bytes = new Uint8Array(len);
|
|
|
|
for (let i = 0; i < len; i++) {
|
|
bytes[i] = binaryString.charCodeAt(i);
|
|
}
|
|
|
|
return bytes.buffer;
|
|
}
|
|
|
|
private _removeMimeType(dataURI: string): string {
|
|
// Split the input to get the mime-type and the data itself
|
|
const splitUri = dataURI.split(',');
|
|
|
|
// Return only the data
|
|
return splitUri[1];
|
|
}
|
|
}
|