Foxyz/sync_replay_project
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Relay HLS/DASH-only pages as pieces tracks (protocol 11)

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A track can be served as pieces: the server writes a VOD playlist whose
entries are its own piece URLs (segments, init maps, AES-128 keys; byte
ranges folded in; yt-dlp's DASH fragments become the same list). A piece
buffer per track fills like the byte buffer. Picks a single file, then a
split byte pair, then pieces. DRM, live, master playlists are refused.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
foxyzandClaude Opus 5.5 committed 2026-10-09 23:35:31 +03:00
1 parent 05f9e794a9
commit fe5d6c3b3f
18 files changed
+1593 -207
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apps/desktop/lib/src/session/session_coordinator.dart
+19 -12
View File
@@ -544,9 +544,10 @@ class SessionCoordinator {
}
}
/// This viewer's `/r/` URL; an mpv EDL of every track when there are
/// several (a page's separate video and audio).
String _relayMediaUrlFor(String name, int mediaId, [int tracks = 1]) =>
/// This viewer's `/r/` URL; with tracks, a pieces track's playlist, or
/// an mpv EDL of every track when there are several (a page's separate
/// video and audio).
String _relayMediaUrlFor(String name, int mediaId, [List<RelayTrackSpec> tracks = const []]) =>
relayViewerUrl('http://$_wsHost:$_wsPort/r/default/${sync.token}/$mediaId', name, tracks: tracks);
/// Serves [media] for media [mediaId] on this member's relay channel.
@@ -687,7 +688,7 @@ class SessionCoordinator {
_awaitLiveFor = r.mediaId;
health.value = const HealthStatus(HealthSeverity.info, 'the server is getting the video…');
} else {
await _openMedia(_relayMediaUrlFor(name, r.mediaId, relay.tracks.length));
await _openMedia(_relayMediaUrlFor(name, r.mediaId, relay.tracks));
}
} else {
var url = stateMediaUrl(r);
@@ -707,7 +708,7 @@ class SessionCoordinator {
} else if (_awaitLiveFor == r.mediaId && (stateMediaRelay(r)?.live ?? false)) {
_awaitLiveFor = -1;
await _openMedia(
_relayMediaUrlFor((r.media?['name'] as String?) ?? '', r.mediaId, stateMediaRelay(r)!.tracks.length));
_relayMediaUrlFor((r.media?['name'] as String?) ?? '', r.mediaId, stateMediaRelay(r)!.tracks));
}
_jellyfinTransport(r);
_relayStatus(r);
@@ -1262,21 +1263,27 @@ class SessionCoordinator {
return null;
}
if (relay == LinkRelay.me) {
// This computer reads it: a file, or a page's formats (one file, or
// separate video and audio tracks).
// This computer reads it: a file, or a page's formats (one file,
// separate video and audio tracks, or segmented playlists).
if (probe == null) return 'cannot pass this link on: $probeError';
final problem = probe.relayProblem;
if (problem != null) return problem;
final y = await ytDlp.ytDlp;
final check = LinkRelayMedia(uri, ytDlp: y, probe: probe);
var size = 0;
final List<String> kinds;
final List<RelayTrackSpec> specs;
try {
final tracks = await check.open().timeout(const Duration(seconds: 15));
for (final t in tracks) {
size += await t.bytes.size().timeout(const Duration(seconds: 15));
// A playlist is read (DRM and live refused) but has no size.
final pieces = t.pieces;
if (pieces != null) {
await pieces.list().timeout(const Duration(seconds: 15));
} else {
size += await t.bytes!.size().timeout(const Duration(seconds: 15));
}
}
kinds = [for (final t in tracks) t.kind];
specs = relayTrackSpecs(tracks);
} catch (e) {
return 'cannot pass this link on: $e';
} finally {
@@ -1284,11 +1291,11 @@ class SessionCoordinator {
}
_pendingOrigin = _LinkOrigin(url, probe, y);
_swap(HelloMedia(
name: name, size: size, duration: 0, relay: MediaRelay(tracks: kinds.length > 1 ? kinds : const [])));
name: name, size: size, duration: 0, relay: MediaRelay(tracks: specs)));
return null;
}
// The server reads it with its own yt-dlp; only a page this app knows
// it cannot relay (live, no video file) is refused here (the server
// it cannot relay (live, nothing a relay can read) is refused here (the server
// may reach what this computer cannot).
if (probe != null && probe.isPage && probe.info != null && probe.relayProblem != null) {
return probe.relayProblem;