fix(player): 隔离播放资源所有权并修复黑屏

lib/pages/player/player_view.dart

@@ -90,7 +90,7 @@ class PlayerPage extends StatefulWidget {
     this.wallet,
     this.downloads,
     this.handoff,
-    this.isolatePlaybackSession = false,
+    this.revealAfterFirstFrame = false,
   });
 
   final Drama drama;
@@ -118,7 +118,7 @@ class PlayerPage extends StatefulWidget {
   final WalletController? wallet;
   final DownloadController? downloads;
   final PlayerPageHandoff? handoff;
-  final bool isolatePlaybackSession;
+  final bool revealAfterFirstFrame;
 
   @override
   State<PlayerPage> createState() => _PlayerPageState();
@@ -141,6 +141,7 @@ class _PlayerPageState extends State<PlayerPage>
   DateTime? _swipeStartedAt;
   bool _swipePrewarmCaptured = false;
   bool _presentationActive = false;
+  late bool _firstFrameReady;
   bool _leavingHandoff = false;
   bool _preparingFullPlayer = false;
   final Set<String> _precachedPosterUrls = {};
@@ -152,6 +153,7 @@ class _PlayerPageState extends State<PlayerPage>
   @override
   void initState() {
     super.initState();
+    _firstFrameReady = !widget.revealAfterFirstFrame;
     final handoff = widget.handoff;
     logic = PlayerBinding().create(
       history: context.read<WatchHistoryRepository>(),
@@ -169,12 +171,18 @@ class _PlayerPageState extends State<PlayerPage>
     WidgetsBinding.instance.addObserver(this);
     logic.start(
       factory: context.read<PlayerFactory>(),
-      coordinator: handoff == null && !widget.isolatePlaybackSession
+      coordinator: widget.embedded
           ? context.read<PlaybackCoordinator>()
           : PlaybackCoordinator(),
       initialUserWantsPlay: handoff?.sourceUserWantsPlay ?? true,
     );
     _pageController = logic.pages;
+    if (kDebugMode && widget.revealAfterFirstFrame) {
+      debugPrint(
+        '[player-entry] phase=waiting-first-frame '
+        'session=${identityHashCode(logic.session)}',
+      );
+    }
   }
 
   @override
@@ -594,6 +602,7 @@ class _PlayerPageState extends State<PlayerPage>
             PlayerRenderStack(
               pageController: _pageController,
               slots: _renderSlots(indices),
+              onCurrentVideoVisible: _handleCurrentVideoVisible,
             ),
             pageLayer,
           ],
@@ -660,16 +669,37 @@ class _PlayerPageState extends State<PlayerPage>
               ),
       ),
     );
-    if (widget.handoff == null) return player;
+    final revealContent =
+        !widget.revealAfterFirstFrame ||
+        _firstFrameReady ||
+        logic.session.isLocked ||
+        logic.ticketError != null ||
+        logic.blockedEpisodeId != null ||
+        logic.session.error != null;
+    final presentedPlayer = widget.revealAfterFirstFrame
+        ? Opacity(opacity: revealContent ? 1 : 0, child: player)
+        : player;
+    if (widget.handoff == null) return presentedPlayer;
     return PopScope<void>(
       canPop: _leavingHandoff,
       onPopInvokedWithResult: (didPop, _) {
         if (!didPop) unawaited(_leaveHandoff(context));
       },
-      child: player,
+      child: presentedPlayer,
     );
   }
 
+  void _handleCurrentVideoVisible() {
+    if (!mounted || _firstFrameReady) return;
+    setState(() => _firstFrameReady = true);
+    if (kDebugMode) {
+      debugPrint(
+        '[player-entry] phase=ready '
+        'session=${identityHashCode(logic.session)}',
+      );
+    }
+  }
+
   void _openCurrentMore() {
     final entry = logic.queue.entryAt(logic.session.currentIndex);
     _openMore(context, entry.episode);
@@ -1176,13 +1206,18 @@ class _PlayerPageState extends State<PlayerPage>
     _logFullPlayerRoute('present');
     setState(() => _presentationActive = true);
     final route = Navigator.of(context).push<void>(
-      MaterialPageRoute<void>(
-        builder: (_) => PlayerPage(
+      PageRouteBuilder<void>(
+        opaque: false,
+        barrierDismissible: false,
+        transitionDuration: Duration.zero,
+        reverseTransitionDuration: Duration.zero,
+        pageBuilder: (_, _, _) => PlayerPage(
           drama: seriesDrama,
           initialIndex: episodeIndex,
           handoff: handoff,
           wallet: logic.wallet,
           downloads: logic.downloads,
+          revealAfterFirstFrame: true,
         ),
       ),
     );