mirror of
https://github.com/Tonejs/Tone.js
synced 2025-01-14 04:43:54 +00:00
aaf880c925
* WIP moving tests to web-test-runner * updating thresholds * Adding file extensions * Testing integrations * linting * fixing dep * moving back to root dir * prettier all of the files * updating eslint rules to use with prettier * remove import package * moving tsignore around * removing unneeded ignores * all tests run on puppeteer, no need for testing guards * linting * import type syntax * cleaning up * Update package.json
89 lines
2.3 KiB
TypeScript
89 lines
2.3 KiB
TypeScript
import { version } from "../version.js";
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import {
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AnyAudioContext,
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hasAudioContext,
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theWindow,
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} from "./context/AudioContext.js";
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import { Context } from "./context/Context.js";
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import { DummyContext } from "./context/DummyContext.js";
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import { BaseContext } from "./context/BaseContext.js";
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import { OfflineContext } from "./context/OfflineContext.js";
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import {
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isAudioContext,
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isOfflineAudioContext,
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} from "./util/AdvancedTypeCheck.js";
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/**
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* This dummy context is used to avoid throwing immediate errors when importing in Node.js
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*/
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const dummyContext = new DummyContext();
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/**
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* The global audio context which is getable and assignable through
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* getContext and setContext
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*/
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let globalContext: BaseContext = dummyContext;
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/**
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* Returns the default system-wide {@link Context}
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* @category Core
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*/
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export function getContext(): BaseContext {
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if (globalContext === dummyContext && hasAudioContext) {
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setContext(new Context());
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}
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return globalContext;
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}
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/**
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* Set the default audio context
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* @param context
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* @param disposeOld Pass `true` if you don't need the old context to dispose it.
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* @category Core
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*/
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export function setContext(
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context: BaseContext | AnyAudioContext,
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disposeOld = false
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): void {
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if (disposeOld) {
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globalContext.dispose();
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}
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if (isAudioContext(context)) {
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globalContext = new Context(context);
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} else if (isOfflineAudioContext(context)) {
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globalContext = new OfflineContext(context);
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} else {
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globalContext = context;
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}
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}
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/**
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* Most browsers will not play _any_ audio until a user
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* clicks something (like a play button). Invoke this method
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* on a click or keypress event handler to start the audio context.
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* More about the Autoplay policy
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* [here](https://developers.google.com/web/updates/2017/09/autoplay-policy-changes#webaudio)
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* @example
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* document.querySelector("button").addEventListener("click", async () => {
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* await Tone.start();
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* console.log("context started");
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* });
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* @category Core
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*/
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export function start(): Promise<void> {
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return globalContext.resume();
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}
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/**
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* Log Tone.js + version in the console.
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*/
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if (theWindow && !theWindow.TONE_SILENCE_LOGGING) {
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let prefix = "v";
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if (version === "dev") {
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prefix = "";
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}
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const printString = ` * Tone.js ${prefix}${version} * `;
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// eslint-disable-next-line no-console
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console.log(`%c${printString}`, "background: #000; color: #fff");
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}
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