Add Function to Change/ADD subtitle and change the audio track (#91)

Author: rikaweb

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 3.0.7
+* Updates MobileVLC to allow for changing of subtitles and adding subtiles . 
+credits to @rikaweb(https://github.com/rikaweb) and Mitch Ross (https://github.com/mitchross)
+
 ## 3.0.6
 * Updates MobileVLC to allow for handling of vlc error.
 credits to Alireza Setayesh (https://github.com/alr2413)

android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip

android/src/main/java/software/solid/fluttervlcplayer/FlutterVideoView.java

@@ -185,6 +185,18 @@ public void onMethodCall(MethodCall methodCall, @NonNull MethodChannel.Result re
             case "dispose":
                 this.dispose();
                 break;
+            case "changeSound":
+                int audioNumber = Integer.parseInt((String) methodCall.argument("audioNumber"));
+                mediaPlayer.setAudioTrack(audioNumber);
+                break;
+            case "changeSubtitle":
+                int subtitleNumber = Integer.parseInt((String) methodCall.argument("subtitleNumber"));
+                mediaPlayer.setSpuTrack(subtitleNumber);
+                break;
+            case "addSubtitle":
+                String filePath =(String) methodCall.argument("filePath");
+                mediaPlayer.addSlave(0,filePath,true);
+                break;
             case "changeURL":
                 if (libVLC == null)
                     result.error("VLC_NOT_INITIALIZED", "The player has not yet been initialized.", false);
@@ -285,6 +297,11 @@ public void onEvent(MediaPlayer.Event event) {
                 eventObject.put("height", height);
                 eventObject.put("width", width);
                 eventObject.put("length", mediaPlayer.getLength());
+                //add support for changing audio track and subtitle
+                eventObject.put("audioCount", mediaPlayer.getAudioTracksCount());
+                eventObject.put("activeAudioTracks", mediaPlayer.getAudioTrack());
+                eventObject.put("spuCount", mediaPlayer.getSpuTracksCount());
+                eventObject.put("activeSpu", mediaPlayer.getSpuTrack());
                 eventSink.success(eventObject.clone());
                 break;
 

example/ios/Flutter/.last_build_id

@@ -1 +1 @@
-b51a9eab8a58462f1b870a104119b683
+fac0ff2a1b783f751f7b7af21b136b52

ios/Classes/SwiftFlutterVlcPlayerPlugin.swift

@@ -147,6 +147,32 @@ public class VLCView: NSObject, FlutterPlatformView {
                     result(nil)
                     return
 
+                case .changeSound:
+                    let audioNumber = arguments["audioNumber"] as? String ?? ""
+                    let audioNumberInt = Int32(audioNumber) ?? 0
+                    self.player.audioChannel = audioNumberInt
+                    return
+                
+                case .changeSubtitle:
+                    let subtitleNumber = arguments["subtitleNumber"] as? String ?? ""
+                    let subtitleInt = Int32(subtitleNumber) ?? 0
+
+                    self.player.currentVideoSubTitleIndex = subtitleInt
+                    return
+                
+                case .addSubtitle:
+                
+                    guard let  urlString = arguments["filePath"] as? String, let url = URL(string: urlString) else {
+                        
+                        result(FlutterError(code: "500",
+                                            message: "subtitle file path failed",
+                                            details: nil)
+                        )
+                        return
+                    }
+                    self.player.addPlaybackSlave(url, type: .subtitle, enforce: true)
+                    return
+                    
                 default:
                     result(FlutterMethodNotImplemented)
                     return
@@ -196,6 +222,13 @@ class VLCPlayerEventStreamHandler:NSObject, FlutterStreamHandler, VLCMediaPlayer
         var height = 0
         var width =  0
 
+        //subtitle
+        let audioCount =  player?.numberOfAudioTracks ?? 0
+        let activeAudioTracks =  player?.audioChannel ?? 0
+        let spuCount =  player?.numberOfSubtitlesTracks ?? 0
+        let activeSpu = player?.currentVideoSubTitleIndex ?? 0
+        
+        
         if player?.currentVideoTrackIndex != -1 {
             if (player?.currentVideoTrackIndex) != nil {
                 track =  tracks[0] as! NSDictionary
@@ -226,7 +259,12 @@ class VLCPlayerEventStreamHandler:NSObject, FlutterStreamHandler, VLCMediaPlayer
                     "ratio": NSNumber(value: ratio),
                     "height": height,
                     "width": width,
-                    "length": value
+                    "length": value,
+                    "audioCount": audioCount,
+                    "activeAudioTracks": activeAudioTracks,
+                    "spuCount": spuCount,
+                    "activeSpu": activeSpu
+                    
                 ])
             }
             return
@@ -311,4 +349,7 @@ enum FlutterMethodCallOption :String {
     case setPlaybackSpeed = "setPlaybackSpeed"
     case setTime = "setTime"
     case setVolume = "setVolume"
+    case changeSound = "changeSound"
+    case changeSubtitle = "changeSubtitle"
+    case addSubtitle = "addSubtitle"
 }

lib/flutter_vlc_player.dart

@@ -175,6 +175,15 @@ class VlcPlayerController {
   MethodChannel _methodChannel;
   EventChannel _eventChannel;
 
+  int get audioCount => _audioCount;
+  int _audioCount = 1;
+  int get activeAudioNum => _activeAudioNum;
+  int _activeAudioNum = 1;
+  int get activeSubtitleNum => _activeSubtitleNum;
+  int _activeSubtitleNum;
+  int get subtitleCount => _subtitleCount;
+  int _subtitleCount = 0;
+
   VoidCallback _onInit;
   List<VoidCallback> _eventHandlers;
 
@@ -297,6 +306,12 @@ class VlcPlayerController {
             _size = new Size(event['width'], event['height']);
           if (event['length'] != null) _duration = event['length'];
           if (event['ratio'] != null) _aspectRatio = event['ratio'];
+          if (event['audioCount'] != null) _audioCount = event['audioCount'];
+          if (event['activeAudioTracks'] != null)
+            _activeAudioNum = event['activeAudioTracks'];
+          if (event['spuCount'] != null) _subtitleCount = event['spuCount'];
+          if (event['activeSpu'] != null)
+            _activeSubtitleNum = event['activeSpu'];
 
           _playingState =
               event['value'] ? PlayingState.PLAYING : PlayingState.STOPPED;
@@ -375,4 +390,18 @@ class VlcPlayerController {
   void dispose() {
     _methodChannel.invokeMethod("dispose");
   }
+
+  void changeSound(int audioNumber) {
+    _methodChannel
+        .invokeMethod("changeSound", {'audioNumber': audioNumber.toString()});
+  }
+
+  void changeSubtitle(int subtitleNumber) {
+    _methodChannel.invokeMethod(
+        "changeSubtitle", {'subtitleNumber': subtitleNumber.toString()});
+  }
+
+  void addSubtitle(String filePath) {
+    _methodChannel.invokeMethod("addSubtitle", {'filePath': filePath});
+  }
 }

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_vlc_player
 description: A VLC-powered alternative to Flutter's video_player. Supports multiple players on one screen.
-version: 3.0.6
+version: 3.0.7
 homepage: https://github.com/solid-software/flutter_vlc_player
 
 environment: