Native Dolby Vision & High-Quality Audio Support (Windows), with external player

lib/l10n/app_en.arb

@@ -2570,5 +2570,17 @@
   "@groupedFoldersDescription": {},
   "downloadTranscoded": "Download transcoded",
   "downloadOriginal": "Download original",
-  "today": "Today"
+  "today": "Today",
+  "dvPlayerSelectionTitle": "Dolby Vision Player",
+  "dvPlayerSelectionDesc": "Choose how to play Dolby Vision on Windows. Energy Player is required for native vision and high-quality audio passthrough (Atmos, 5.1).",
+  "dvPlayerAsk": "Always ask",
+  "dvPlayerDisabled": "Disabled (Internal player)",
+  "dvPlayerEnergyPlayer": "Energy Player (External)",
+  "dvPlayerDialogTitle": "Play with...",
+  "dvPlayerDialogDesc": "This content is in native Dolby Vision. Use Energy Player for accurate HDR colors and advanced audio support (Atmos/5.1 passthrough). Internal playback may have dull colors or limited audio codec support.",
+  "dvRememberChoice": "Remember my choice",
+  "dvPlayerNotInstalled": "Energy Player is not installed. Would you like to download it from the Microsoft Store?",
+  "dvPlayerGetFromStore": "Get from Store",
+  "dvEnableInstruction": "Configuration for native Dolby Vision and Audio:\n• Enable 'Allow Dolby Vision decoding' in Energy Player 'Video/Audio settings'.\n• Enable relevant 'Passthrough' options for Atmos/5.1 support.\n• Ensure HDR is enabled in Windows Display settings.",
+  "dvSyncWarning": "Note: Playback state is saved within Energy Player only and will not sync back to Fladder."
 }

lib/models/items/media_streams_model.dart

@@ -71,6 +71,8 @@ class MediaStreamsModel {
 
   String? get mediaInfoTag => '${displayProfile?.value} ${resolution?.value}';
 
+  bool get hasDolbyVision => videoStreams.any((element) => element.isDolbyVision);
+
   Widget? audioIcon(
     BuildContext context,
     Function()? onTap,
@@ -257,6 +259,19 @@ class VideoStreamModel extends StreamModel {
       index: stream.index ?? -1,
     );
   }
+
+  bool get isDolbyVision {
+    final range = videoRangeType;
+    if (range == null) return false;
+    return range == VideoRangeType.dovi ||
+        range == VideoRangeType.doviwithhdr10 ||
+        range == VideoRangeType.doviwithhlg ||
+        range == VideoRangeType.doviwithsdr ||
+        range == VideoRangeType.doviwithel ||
+        range == VideoRangeType.doviwithhdr10plus ||
+        range == VideoRangeType.doviwithelhdr10plus;
+  }
+
   String get prettyName {
     return "${Resolution.fromVideoStream(this)?.value} - ${DisplayProfile.fromVideoStream(this).value} - (${codec.toUpperCase()})";
   }

lib/models/playback/direct_playback_model.dart

@@ -1,4 +1,4 @@
-import 'package:flutter/widgets.dart';
+import 'package:flutter/widgets.dart' hide RepeatMode;
 
 import 'package:collection/collection.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';

lib/models/playback/transcode_playback_model.dart

@@ -1,4 +1,4 @@
-import 'package:flutter/widgets.dart';
+import 'package:flutter/widgets.dart' hide RepeatMode;
 
 import 'package:collection/collection.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';

lib/models/settings/video_player_settings.dart

@@ -84,6 +84,7 @@ abstract class VideoPlayerSettingsModel with _$VideoPlayerSettingsModel {
     @Default(2.0) double speedBoostRate,
     @Default(true) bool enableDoubleTapSeek,
     @Default(false) bool enableAdvancedVideoOptions,
+    @Default(DVPlayerChoice.ask) DVPlayerChoice dvPlayerChoice,
   }) = _VideoPlayerSettingsModel;
 
   double get volume => switch (defaultTargetPlatform) {
@@ -245,3 +246,19 @@ Map<VideoHotKeys, KeyCombination> get _defaultVideoHotKeys => {
           VideoHotKeys.exit => KeyCombination(key: LogicalKeyboardKey.escape),
         },
     };
+
+enum DVPlayerChoice {
+  internalPlayer,
+  ask,
+  energyPlayer;
+
+  const DVPlayerChoice();
+
+  String label(BuildContext context) {
+    return switch (this) {
+      DVPlayerChoice.internalPlayer => context.localized.dvPlayerDisabled,
+      DVPlayerChoice.ask => context.localized.dvPlayerAsk,
+      DVPlayerChoice.energyPlayer => context.localized.dvPlayerEnergyPlayer,
+    };
+  }
+}

lib/providers/settings/video_player_settings_provider.dart

@@ -137,4 +137,6 @@ class VideoPlayerSettingsProviderNotifier extends StateNotifier<VideoPlayerSetti
   void setEnableDoubleTapSeek(bool value) => state = state.copyWith(enableDoubleTapSeek: value);
 
   void setEnableAdvancedVideoOptions(bool value) => state = state.copyWith(enableAdvancedVideoOptions: value);
+
+  void setDVPlayerChoice(DVPlayerChoice value) => state = state.copyWith(dvPlayerChoice: value);
 }

lib/screens/settings/player_settings_page.dart

@@ -138,6 +138,44 @@ class _PlayerSettingsPageState extends ConsumerState<PlayerSettingsPage> {
           ],
         ),
         const SizedBox(height: 12),
+        if (Platform.isWindows)
+          ...settingsListGroup(
+            context,
+            SettingsLabelDivider(label: context.localized.dvPlayerSelectionTitle),
+            [
+              SettingsListTile(
+                label: Text(context.localized.dvPlayerSelectionTitle),
+                subLabel: Text(context.localized.dvPlayerSelectionDesc),
+                trailing: EnumBox(
+                  current: videoSettings.dvPlayerChoice.label(context),
+                  itemBuilder: (context) => DVPlayerChoice.values
+                      .map(
+                        (entry) => ItemActionButton(
+                          label: Text(entry.label(context)),
+                          action: () => provider.setDVPlayerChoice(entry),
+                        ),
+                      )
+                      .toList(),
+                ),
+              ),
+              AnimatedFadeSize(
+                child: Column(
+                  children: [
+                    SettingsMessageBox(
+                      context.localized.dvEnableInstruction,
+                      messageType: MessageType.info,
+                    ),
+                    const SizedBox(height: 8),
+                    SettingsMessageBox(
+                      context.localized.dvSyncWarning,
+                      messageType: MessageType.warning,
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          ),
+        const SizedBox(height: 12),
         ...settingsListGroup(context, SettingsLabelDivider(label: context.localized.mediaSegmentActions), [
           ...videoSettings.segmentSkipSettings.entries.sorted((a, b) => b.key.index.compareTo(a.key.index)).map(
                 (entry) => Padding(