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Add opt-in FFmpeg continuity slates with per-viewer localization

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michal
2026-10-23 22:35:40 +02:00
parent d097aad032
commit 5f6b0b5ff6
22 changed files with 1407 additions and 30 deletions
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web/decoder-channel-playback.js
+70 -10
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@@ -34,12 +34,48 @@ window.DecoderChannelPlayback = async () => class DecoderChannelPlayback {
try { appHost.getDeviceProfile = getDeviceProfile; }
catch { /* A client exposing a read-only host keeps its native negotiation. */ }
}
let generation = 0, starting = null, cancelButton = null, watcher = null;
const clearControls = () => { clearInterval(watcher); watcher = null; cancelButton?.remove(); cancelButton = null; };
// Jellyfin's globalize module sets <html lang> to the current user's UI
// language, including an explicit choice that differs from browser locale.
const fallback = { header: 'Television', preparing: 'Preparing channel…',
checking_stream: 'Waiting for video and audio…', waiting_for_stream: 'Still waiting for a usable stream…',
ready: 'Stream detected. Starting player…', failed: 'Unable to prepare the stream.', buffering: 'Buffering video…',
help: 'The receiver may need several seconds. You can cancel or press Esc.', cancel: 'Stop and return to channels',
elapsed: 'Waiting: {seconds} s', timeout: 'The channel is not providing video. Returning to the channel list.',
play_error: 'Unable to start the channel.' };
let messages = fallback;
const text = key => messages[key] || fallback[key];
const loadMessages = async api => {
let timer;
try {
const language = document.documentElement?.lang || '';
const response = await Promise.race([
api.ajax({ type: 'GET', dataType: 'json', url: api.getUrl('DecoderIntegration/StartupMessages', { language }) }),
new Promise(resolve => { timer = setTimeout(() => resolve(null), 1000); })
]);
return response?.Texts ? { ...fallback, ...response.Texts } : fallback;
} catch { return fallback; } finally { clearTimeout(timer); }
};
let generation = 0, starting = null, cancelButton = null, watcher = null, statusPanel = null, statusText = null, elapsedText = null, playbackSequence = 0;
const clearControls = () => { clearInterval(watcher); watcher = null; cancelButton?.remove(); cancelButton = null; statusPanel?.remove(); statusPanel = statusText = elapsedText = null; };
events.on(playbackManager, 'playbackstop', () => { if (!starting) clearControls(); });
events.on(playbackManager, 'playbackstart', () => { ++playbackSequence; });
document.addEventListener('fullscreenchange', () => {
if (cancelButton) (document.fullscreenElement || document.body).append(cancelButton);
if (statusPanel) (document.fullscreenElement || document.body).append(statusPanel);
});
const showStatus = (channelName) => {
statusPanel = document.createElement('section'); statusPanel.id = 'decoderPlaybackStatus';
statusPanel.setAttribute('role', 'status'); statusPanel.setAttribute('aria-live', 'polite');
statusPanel.style.cssText = 'position:fixed;inset:0;z-index:2147483646;background:#101723;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:30px;box-sizing:border-box;color:#f4f7fc;text-align:center;font:18px system-ui';
const icon = document.createElement('div'); icon.setAttribute('aria-hidden', 'true');
icon.style.cssText = 'width:112px;height:76px;border:5px solid #58bfee;border-radius:14px;display:grid;place-items:center;color:#58bfee;font:bold 26px system-ui'; icon.textContent = 'TV';
const title = document.createElement('h2'); title.textContent = channelName || text('header'); title.style.cssText = 'margin:6px;max-width:90vw;overflow-wrap:anywhere;font-size:28px';
statusText = document.createElement('p'); statusText.textContent = text('preparing'); statusText.style.cssText = 'margin:0;font-size:22px';
const help = document.createElement('p'); help.textContent = text('help'); help.style.cssText = 'max-width:560px;color:#b1bdce;margin:0;line-height:1.5';
elapsedText = document.createElement('span'); elapsedText.setAttribute('aria-hidden', 'true'); elapsedText.style.cssText = 'color:#91a4bb;font-variant-numeric:tabular-nums';
statusPanel.append(icon, title, statusText, help, elapsedText); document.body.append(statusPanel);
};
const stageText = phase => ['preparing', 'checking_stream', 'waiting_for_stream', 'ready', 'failed'].includes(phase) ? text(phase) : null;
const leave = async () => {
++generation; starting = null; clearControls();
try { await playbackManager.stop(); } finally { loading.hide(); await appRouter.show('livetv?tab=2'); }
@@ -51,29 +87,53 @@ window.DecoderChannelPlayback = async () => class DecoderChannelPlayback {
request = (async () => {
const api = window.ApiClient;
if (!api?.getCurrentUserId() || (serverId && api.serverId() !== serverId)) return false;
const item = await api.getItem(api.getCurrentUserId(), id);
const [item, localized] = await Promise.all([api.getItem(api.getCurrentUserId(), id), loadMessages(api)]);
if (ticket !== generation) return false;
messages = localized;
if (item.Type !== 'TvChannel') throw Error('Expected a TV channel');
clearControls();
cancelButton = document.createElement('button');
cancelButton.id = 'decoderPlaybackExit'; cancelButton.textContent = 'Zatrzymaj i wróć do kanałów';
cancelButton.id = 'decoderPlaybackExit'; cancelButton.textContent = text('cancel');
cancelButton.style.cssText = 'position:fixed;right:16px;top:72px;z-index:2147483647;background:#252525;color:white;border:1px solid #aaa;border-radius:6px;padding:12px;font:16px system-ui;cursor:pointer';
cancelButton.onclick = () => void leave(); document.body.append(cancelButton);
showStatus(item.Name);
// Allow the bounded metadata probe (25 s) plus HLS startup (20 s).
let opened = false, opening = false; const deadline = Date.now() + 45000;
let opened = false, opening = false, hasPlayed = false, polling = false, pollFailures = 0, lastPoll = -Infinity;
const began = Date.now(), deadline = began + 45000, initialVideo = document.querySelector('video'), initialSource = initialVideo?.currentSrc, initialSequence = playbackSequence;
watcher = setInterval(() => {
if (ticket !== generation) return;
const video = document.querySelector('video');
const player = playbackManager.getCurrentPlayer();
if (player?.isLocalPlayer === false) { clearControls(); return; }
if (!opened && !opening && video?.readyState >= 1 && player) {
const currentVideo = video && (video !== initialVideo || video.currentSrc !== initialSource || playbackSequence > initialSequence);
if (elapsedText) elapsedText.textContent = text('elapsed').replace('{seconds}', Math.floor((Date.now() - began) / 1000));
if (!opened && !opening && currentVideo && video.readyState >= 1 && player) {
opening = true;
Promise.resolve(appRouter.showVideoOsd()).then(() => { opened = true; })
.catch(() => { /* A cancelled/unready native route can be retried. */ })
.finally(() => { opening = false; });
}
if (video?.readyState >= 2 && video.currentTime > 0) return;
if (Date.now() >= deadline) { void leave(); toast('Kanał nie przesyła obrazu. Powrót do listy kanałów.'); }
if (currentVideo && video.readyState >= 2 && video.currentTime > 0) {
hasPlayed = true; if (statusPanel) statusPanel.style.display = 'none'; return;
}
if (hasPlayed) {
if (statusPanel) statusPanel.style.display = video?.paused ? 'none' : 'flex';
if (statusText) statusText.textContent = text('buffering');
return; // A later buffer underrun must not reuse the startup deadline.
}
if (currentVideo && video.readyState >= 1 && statusText) statusText.textContent = text('buffering');
if (!polling && pollFailures < 3 && Date.now() - lastPoll >= 1500 && api.ajax && api.getUrl) {
polling = true; lastPoll = Date.now();
Promise.resolve().then(() => api.ajax({ type: 'GET', dataType: 'json',
url: api.getUrl('DecoderIntegration/PlaybackProgress', { channelId: item.Id }) }))
.then(snapshot => {
if (ticket !== generation || hasPlayed || (currentVideo && video.readyState >= 1)) return;
const text = snapshot?.Available && Date.parse(snapshot.StartedUtc) >= began - 1000 && stageText(snapshot.Phase);
if (text && statusText) statusText.textContent = text;
}).catch(() => { ++pollFailures; })
.finally(() => { polling = false; });
}
if (Date.now() >= deadline) { void leave(); toast(text('timeout')); }
}, 250);
try { await playbackManager.play({ items: [item], fullscreen: true }); }
catch (error) { if (ticket !== generation) return false; await leave(); throw error; }
@@ -106,7 +166,7 @@ window.DecoderChannelPlayback = async () => class DecoderChannelPlayback {
query.delete('decoderPlay');
history.replaceState(null, '', location.pathname + location.search + route.split('?')[0] + (query.size ? '?' + query : ''));
try { await play(id, query.get('serverId')); }
catch (error) { console.error('Decoder channel playback failed', error); toast('Nie udało się uruchomić kanału.'); }
catch (error) { console.error('Decoder channel playback failed', error); toast(text('play_error')); }
};
void attempt();
};
@@ -123,7 +183,7 @@ window.DecoderChannelPlayback = async () => class DecoderChannelPlayback {
event.preventDefault(); event.stopImmediatePropagation();
void play(id, card.dataset.serverid).catch(error => {
console.error('Decoder channel playback failed', error);
toast('Nie udało się uruchomić kanału.');
toast(text('play_error'));
});
}, true);
}