118 lines
3.2 KiB
TypeScript
118 lines
3.2 KiB
TypeScript
export type MediaSessionHandlers = {
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play?: () => void;
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pause?: () => void;
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stop?: () => void;
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previoustrack?: () => void;
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nexttrack?: () => void;
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togglemicrophone?: () => void;
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togglecamera?: () => void;
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hangup?: () => void;
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seekbackward?: (details: MediaSessionActionDetails) => void;
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seekforward?: (details: MediaSessionActionDetails) => void;
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seekTo?: ((details: MediaSessionActionDetails) => void);
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};
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interface MediaMetadataParameters {
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title?: string;
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artist?: string;
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album?: string;
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artwork?: MediaImage[];
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}
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const DEFAULT_HANDLERS = {
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play: undefined,
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pause: undefined,
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seekbackward: undefined,
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seekforward: undefined,
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previoustrack: undefined,
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nexttrack: undefined,
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stop: undefined,
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seekTo: undefined,
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};
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export function registerMediaSession(metadata?: MediaMetadata, handlers?: MediaSessionHandlers) {
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const { mediaSession } = window.navigator;
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if (mediaSession) {
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if (metadata) updateMetadata(metadata);
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if (handlers) setMediaSessionHandlers(handlers);
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} else {
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// eslint-disable-next-line no-console
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console.warn('MediaSession API not supported in this browser');
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}
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}
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export function updateMetadata(metadata?: MediaMetadata) {
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const { mediaSession } = window.navigator;
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if (mediaSession) {
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// eslint-disable-next-line no-null/no-null
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mediaSession.metadata = metadata ?? null;
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}
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}
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export function setMediaSessionHandlers(handlers: MediaSessionHandlers) {
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const { mediaSession } = window.navigator;
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if (mediaSession) {
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Object.entries({ ...DEFAULT_HANDLERS, ...handlers }).forEach(([key, handler]) => {
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try {
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// @ts-ignore API not standardized yet
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mediaSession.setActionHandler(key, handler);
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} catch (err) {
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// Handler not supported, ignoring
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}
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});
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}
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}
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export function clearMediaSession() {
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const { mediaSession } = window.navigator;
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if (mediaSession) {
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// eslint-disable-next-line no-null/no-null
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mediaSession.metadata = null;
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setMediaSessionHandlers(DEFAULT_HANDLERS);
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if (mediaSession.playbackState) mediaSession.playbackState = 'none';
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mediaSession.setPositionState?.();
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}
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}
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export function setPlaybackState(state: 'none' | 'paused' | 'playing' = 'none') {
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const { mediaSession } = window.navigator;
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if (mediaSession && mediaSession.playbackState) {
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mediaSession.playbackState = state;
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}
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}
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export function setPositionState(state?: MediaPositionState) {
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if (!state || state.position === undefined || state.duration === undefined) return;
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state.position = Math.min(state.position, state.duration);
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const { mediaSession } = window.navigator;
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mediaSession?.setPositionState?.(state);
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}
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export function setMicrophoneActive(active: boolean) {
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const { mediaSession } = window.navigator;
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mediaSession?.setMicrophoneActive?.(active);
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}
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export function setCameraActive(active: boolean) {
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const { mediaSession } = window.navigator;
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mediaSession?.setCameraActive?.(active);
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}
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export function buildMediaMetadata({
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title, artist, album, artwork,
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}: MediaMetadataParameters) {
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if ('MediaMetadata' in window) {
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return new window.MediaMetadata({
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title,
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artist,
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album,
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artwork,
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});
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}
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return undefined;
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}
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