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

Jellyfin.Plugin.Enigma2/LiveTvService.cs

@@ -36,6 +36,8 @@ namespace Jellyfin.Plugin.Enigma2
         private readonly LiveStreamProbe _streamProbe;
         private readonly LiveStreamRelay _streamRelay;
         private readonly ILibraryManager _library;
+        private readonly PlaybackFeedback _feedback;
+        private readonly ContinuityStreams _continuity;
 
         private string tvBouquetSRef;
         private List<ChannelInfo> tvChannelInfos = new List<ChannelInfo>();
@@ -46,13 +48,15 @@ namespace Jellyfin.Plugin.Enigma2
 
         public static LiveTvService Instance { get; private set; }
 
-        public LiveTvService(ILogger<LiveTvService> logger, IHttpClientFactory httpClientFactory, InternetEpg internetEpg, LiveStreamProbe streamProbe, LiveStreamRelay streamRelay, ILibraryManager library)
+        public LiveTvService(ILogger<LiveTvService> logger, IHttpClientFactory httpClientFactory, InternetEpg internetEpg, LiveStreamProbe streamProbe, LiveStreamRelay streamRelay, ILibraryManager library, PlaybackFeedback feedback = null, ContinuityStreams continuity = null)
         {
             _logger = logger;
             _httpClientFactory = httpClientFactory;
             _streamProbe = streamProbe;
             _streamRelay = streamRelay;
             _library = library;
+            _feedback = feedback;
+            _continuity = continuity;
             Instance = this;
         }
 
@@ -1143,7 +1147,15 @@ namespace Jellyfin.Plugin.Enigma2
         public async Task<MediaSourceInfo> GetChannelStream(string channelOid, string mediaSourceId, CancellationToken cancellationToken)
         {
             _logger.LogInformation("[Enigma2] Start GetChannelStream");
-
+            PlaybackFeedback.Attempt feedback = null;
+            if (_feedback != null)
+            {
+                try { feedback = await _feedback.Begin(channelOid, cancellationToken).ConfigureAwait(false); }
+                catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested) { throw; }
+                catch { /* Feedback is optional and must not affect playback. */ }
+            }
+            try
+            {
             var requestedReference = channelOid;
             IEnumerable<ChannelInfo> currentChannels = Array.Empty<ChannelInfo>();
             using (var lookupDeadline = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
@@ -1214,14 +1226,23 @@ namespace Jellyfin.Plugin.Enigma2
 
             var streamUrl = string.Format("{0}/{1}{2}", baseUrl, channelOid, trancodingUrl);
             streamUrl = _streamRelay.Register(streamUrl);
+            // Background recordings keep the original source: never record an
+            // endless status slate or guess a viewer language for a timer.
+            if (Plugin.Instance.Configuration.EnableContinuitySlates && _continuity != null && feedback != null)
+            {
+                feedback.Report("waiting_for_stream");
+                return await _continuity.Open(streamUrl, feedback.Language, cancellationToken).ConfigureAwait(false);
+            }
             var fields = channelOid.Split(':');
             var programme = !Plugin.Instance.Configuration.TranscodedStream && fields.Length > 3 && int.TryParse(fields[3], NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var sid) ? sid : (int?)null;
-            var streams = await _streamProbe.Get(streamUrl, cancellationToken, programme).ConfigureAwait(false);
+            var probe = _streamProbe.Get(streamUrl, cancellationToken, programme);
+            var streams = await (_feedback == null ? probe : _feedback.AwaitStream(probe, feedback, cancellationToken)).ConfigureAwait(false);
 
             // A live TS may enumerate its EPG/data PID before AV on the next open.
             // Jellyfin maps positions in MediaStreams rather than MPEG-TS PID values.
             // Its supported unknown-index path selects AV automatically and omits data.
             streams = streams.Select(s => LiveStreamProbe.ParseLiveMetadata(s)).ToList();
+            feedback?.Report("ready");
 
             return new MediaSourceInfo
             {
@@ -1235,7 +1256,11 @@ namespace Jellyfin.Plugin.Enigma2
                 SupportsDirectPlay = false,
                 MediaStreams = streams
             };
-            throw new ResourceNotFoundException(string.Format("Could not stream channel {0}", channelOid));
+            }
+            catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
+            { feedback?.Report("cancelled"); throw; }
+            catch
+            { feedback?.Report("failed"); throw; }
         }
 
 
@@ -1628,6 +1653,7 @@ namespace Jellyfin.Plugin.Enigma2
 
         public async Task CloseLiveStream(string id, CancellationToken cancellationToken)
         {
+            _continuity?.Close(id);
             await Task.Factory.StartNew<string>(() =>
             {
                 _logger.LogDebug("[Enigma2] LiveTvService.CloseLiveStream: closed stream for subscriptionId: {id}", id);