fix: loudnorm out of range (#1371)

lib/models/video/play/url.dart

@@ -1,3 +1,5 @@
+import 'dart:math' show max, min;
+
 import 'package:PiliPlus/models/common/video/audio_quality.dart';
 import 'package:PiliPlus/models/common/video/video_quality.dart';
 import 'package:PiliPlus/utils/extension.dart';
@@ -341,9 +343,18 @@ class Volume {
     );
   }
 
-  @override
-  String toString() =>
-      'measured_I=$measuredI:measured_LRA=$measuredLra:measured_TP=$measuredTp:measured_thresh=$measuredThreshold';
+  String format(Map<String, num> config) {
+    final lra = max(config['lra'] ?? 11, measuredLra);
+    num i = config['i'] ?? targetI;
+    final tp = min(config['tp'] ?? targetTp, measuredTp);
+    final offset = config['offset'] ?? targetOffset;
+    num measuredI = this.measuredI;
+    if (measuredI > 0) {
+      i -= measuredI;
+      measuredI = 0;
+    }
+    return 'LRA=$lra:I=$i:TP=$tp:offset=$offset:linear=true:measured_I=$measuredI:measured_LRA=$measuredLra:measured_TP=$measuredTp:measured_thresh=$measuredThreshold';
+  }
 
   bool get isNotEmpty =>
       measuredI != 0 ||

lib/plugin/pl_player/controller.dart

@@ -747,7 +747,7 @@ class PlPlayerController {
     }
   }
 
-  static final loudnormRegExp = RegExp('loudnorm=[^,]+');
+  static final loudnormRegExp = RegExp('loudnorm=([^,]+)');
 
   // 配置播放器
   Future<Player> _createVideoController(
@@ -845,7 +845,15 @@ class PlPlayerController {
       if (volume != null && volume.isNotEmpty) {
         audioNormalization = audioNormalization.replaceFirstMapped(
           loudnormRegExp,
-          (i) => '${i[0]}:$volume',
+          (i) =>
+              'loudnorm=${volume.format(
+                Map.fromEntries(
+                  i.group(1)!.split(':').map((item) {
+                    final parts = item.split('=');
+                    return MapEntry(parts[0].toLowerCase(), num.parse(parts[1]));
+                  }),
+                ),
+              )}',
         );
       } else {
         audioNormalization = audioNormalization.replaceFirst(