dtourolle
ad48d89dfe
Formatting was configured but never enforced: `bun run format:check` reported 199 unformatted files and ran in no workflow and in no git hook, so .prettierrc (printWidth 100, trailing commas) described an intention rather than the tree. This is the one-time sweep that makes the check gateable. Whitespace and token-reflow only -- no behavioural change: `bun run check` reports 0 errors and all 1053 frontend tests pass before and after. Kept out of every other commit on purpose. A 199-file diff mixed with real changes is unreviewable, and the next commit turns format:check into a hard CI gate so this cannot silently accumulate again.
104 lines
3.5 KiB
TypeScript
104 lines
3.5 KiB
TypeScript
/**
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* Webview audio controller — the frontend half of audio-only playback on
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* platforms with no native audio backend (currently Windows).
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*
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* The Rust `WebviewAudioBackend` emits a `webview_audio_load` event carrying the
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* stream URL whenever a track loads. This controller owns a single hidden
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* `<audio>` element, plays that URL through a {@link WebviewAudioAdapter}, and
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* registers the adapter with the player facade so backend `control_command`
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* events (play/pause/seek — routed by playerEvents.ts) reach the element. The
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* adapter reports state/position back through the standard `player_report_*`
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* round-trip, keeping the Rust controller the single source of truth.
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*
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* No-op on platforms with a native audio backend (Linux/Android): the backend
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* never emits `webview_audio_load` there, so even if initialized this listener
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* stays idle. We still gate initialization on platform to avoid mounting a stray
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* element.
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*
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* TRACES: UR-003, UR-005 | DR-004
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*/
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import { type UnlistenFn } from "@tauri-apps/api/event";
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import { events } from "$lib/api/bindings";
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import { playerController } from "$lib/player";
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import { createRustReportHost } from "$lib/player/adapters/rustReportHost";
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import { WebviewAudioAdapter } from "$lib/player/adapters/webviewAudioAdapter";
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import { getPlaybackCapabilities } from "$lib/services/playbackCapabilities";
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let unlisten: UnlistenFn | null = null;
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let audioEl: HTMLAudioElement | null = null;
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let adapter: WebviewAudioAdapter | null = null;
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/**
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* Initialize the webview audio controller. Safe to call unconditionally from the
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* root layout; it self-gates on platform and is idempotent.
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*/
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export async function initWebviewAudio(): Promise<void> {
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if (unlisten) return;
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// Whether this platform needs the webview element is a backend fact, so Rust
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// answers it. This used to sniff `navigator.userAgent` for "android"/"linux"
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// — a duplicate of the Rust cfg gate that could drift out of step with the
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// backends it was trying to describe.
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const { usesWebviewAudio } = await getPlaybackCapabilities();
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if (!usesWebviewAudio) return;
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audioEl = document.createElement("audio");
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audioEl.hidden = true;
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audioEl.preload = "auto";
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// Kept in the DOM so the browser keeps decoding it when not focused.
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document.body.appendChild(audioEl);
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unlisten = await events.playerStatusEvent.listen((event) => {
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const p = event.payload;
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if (p.type !== "webview_audio_load") return;
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void handleLoad(p.url, p.media_id, p.position, p.autoplay);
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});
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}
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async function handleLoad(
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url: string,
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mediaId: string | null,
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position: number,
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autoplay: boolean,
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): Promise<void> {
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if (!audioEl) return;
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// Fresh host/adapter per load so reporting targets the current media id.
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const host = createRustReportHost(mediaId ?? "", {});
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adapter = new WebviewAudioAdapter(audioEl, host);
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playerController.setActiveAdapter(adapter);
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await adapter.load(url, {
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mediaId: mediaId ?? "",
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mediaSourceId: null,
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needsTranscoding: false,
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initialPosition: position,
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isLive: false,
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audioTrackIndex: null,
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knownDuration: 0,
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subtitleTracks: [],
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});
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if (!autoplay) {
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await adapter.pause();
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}
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}
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/** Tear down the controller (idempotent). */
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export function cleanupWebviewAudio(): void {
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if (unlisten) {
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unlisten();
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unlisten = null;
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}
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if (adapter) {
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playerController.clearActiveAdapter(adapter);
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void adapter.dispose();
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adapter = null;
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}
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if (audioEl) {
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audioEl.remove();
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audioEl = null;
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}
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}
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