feat: Get video duration from chromecast native plugin

android/src/main/kotlin/it/aesys/flutter_video_cast/ChromeCastController.kt

@@ -9,6 +9,7 @@ import com.google.android.gms.cast.framework.CastButtonFactory
 import com.google.android.gms.cast.framework.CastContext
 import com.google.android.gms.cast.framework.Session
 import com.google.android.gms.cast.framework.SessionManagerListener
+import com.google.android.gms.cast.framework.media.RemoteMediaClient
 import com.google.android.gms.common.api.PendingResult
 import com.google.android.gms.common.api.Status
 import io.flutter.plugin.common.BinaryMessenger
@@ -20,7 +21,7 @@ class ChromeCastController(
         messenger: BinaryMessenger,
         viewId: Int,
         context: Context?
-) : PlatformView, MethodChannel.MethodCallHandler, SessionManagerListener<Session>, PendingResult.StatusListener {
+) : PlatformView, MethodChannel.MethodCallHandler, SessionManagerListener<Session>, PendingResult.StatusListener, RemoteMediaClient.ProgressListener {
     private val channel = MethodChannel(messenger, "flutter_video_cast/chromeCast_$viewId")
     private val chromeCastButton = MediaRouteButton(ContextThemeWrapper(context, R.style.Theme_AppCompat_NoActionBar))
     private val sessionManager = CastContext.getSharedInstance()?.sessionManager
@@ -36,6 +37,7 @@ class ChromeCastController(
             val media = MediaInfo.Builder(url).build()
             val options = MediaLoadOptions.Builder().build()
             val request = sessionManager?.currentCastSession?.remoteMediaClient?.load(media, options)
+            sessionManager?.currentCastSession?.remoteMediaClient?.addProgressListener(this, 1000)
             request?.addStatusListener(this)
         }
     }
@@ -122,6 +124,7 @@ class ChromeCastController(
                 result.success(null)
             }
             "chromeCast#stopCasting" -> {
+                sessionManager?.currentCastSession?.remoteMediaClient?.removeProgressListener(this)
                 sessionManager?.endCurrentSession(true)
                 result.success(null)
             }
@@ -173,4 +176,11 @@ class ChromeCastController(
             channel.invokeMethod("chromeCast#requestDidComplete", null)
         }
     }
+
+    override fun onProgressUpdated(progress: Long, duration: Long) {
+        val data = HashMap<String, String>()
+        data[DURATION] = duration.toString()
+        data[PROGRESS] = progress.toString()
+        channel.invokeMethod("chromeCast#getVideoProgress", data)
+    }
 }

android/src/main/kotlin/it/aesys/flutter_video_cast/Contants.kt

@@ -0,0 +1,4 @@
+package it.aesys.flutter_video_cast
+
+const val DURATION = "duration"
+const val PROGRESS = "progress"

example/ios/Podfile.lock

@@ -38,4 +38,4 @@ SPEC CHECKSUMS:
 
 PODFILE CHECKSUM: aafe91acc616949ddb318b77800a7f51bffa2a4c
 
-COCOAPODS: 1.9.2
+COCOAPODS: 1.9.1

example/lib/main.dart

@@ -126,7 +126,6 @@ class _CastSampleState extends State<CastSample> {
   }
 
   Future<void> _onRequestCompleted() async {
-    print('_onRequestCompleted');
     final playing = await _controller.isPlaying();
     setState(() {
       _state = AppState.mediaLoaded;
@@ -135,8 +134,6 @@ class _CastSampleState extends State<CastSample> {
   }
 
   Future<void> _onRequestFailed(String error) async {
-    print('_onRequestFailed');
-
     setState(() => _state = AppState.error);
     print(error);
   }

ios/Classes/ChromeCastController.swift

@@ -8,7 +8,7 @@
 import Flutter
 import GoogleCast
 
-class ChromeCastController: NSObject, FlutterPlatformView {
+class ChromeCastController: NSObject, FlutterPlatformView, GCKRemoteMediaClientListener {
 
     // MARK: - Internal properties
 
@@ -104,6 +104,10 @@ class ChromeCastController: NSObject, FlutterPlatformView {
         case "chromeCast#removeSessionListener":
             removeSessionListener()
             result(nil)
+        case "chromeCast#stopCasting":
+            sessionManager.currentCastSession?.remoteMediaClient?.remove(self)
+            sessionManager.endSession()
+            result(nil)
         default:
             result(nil)
             break
@@ -122,8 +126,19 @@ class ChromeCastController: NSObject, FlutterPlatformView {
         if let request = sessionManager.currentCastSession?.remoteMediaClient?.loadMedia(mediaInformation) {
             request.delegate = self
         }
+        sessionManager.currentCastSession?.remoteMediaClient?.add(self)
     }
 
+    public func remoteMediaClient(_ client: GCKRemoteMediaClient, didUpdate mediaStatus: GCKMediaStatus?) {
+        if let mediaStatusPosition = mediaStatus?.streamPosition, let duration = mediaStatus?.mediaInformation?.streamDuration {
+             channel.invokeMethod("chromeCast#getVideoProgress", arguments: [
+                "position": String(mediaStatusPosition * 1000),
+                       "duration":  String(duration * 1000)
+                   ])
+        }
+
+    }
+
     private func play() {
         if let request = sessionManager.currentCastSession?.remoteMediaClient?.play() {
             request.delegate = self

lib/flutter_video_cast.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 
 import 'package:flutter_video_cast/src/chrome_cast/chrome_cast_platform.dart';
 import 'package:flutter_video_cast/src/air_play/air_play_platform.dart';
+import 'package:flutter_video_cast/src/chrome_cast/video_progress_model.dart';
 
 part 'src/chrome_cast/chrome_cast_controller.dart';
 part 'src/chrome_cast/chrome_cast_button.dart';

lib/src/chrome_cast/chrome_cast_controller.dart

@@ -57,6 +57,10 @@ class ChromeCastController {
     return _chromeCastPlatform.stopCasting(id: id);
   }
 
+  Stream<VideoProgress> getVideoProgress() {
+    return _chromeCastPlatform.progressStreamEvents;
+  }
+
   /// Returns `true` when a cast session is connected, `false` otherwise.
   Future<bool> isConnected() {
     return _chromeCastPlatform.isConnected(id: id);

lib/src/chrome_cast/chrome_cast_platform.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_video_cast/src/chrome_cast/chrome_cast_event.dart';
 import 'package:flutter_video_cast/src/chrome_cast/method_channel_chrome_cast.dart';
+import 'package:flutter_video_cast/src/chrome_cast/video_progress_model.dart';
 
 /// The interface that platform-specific implementations of `flutter_video_cast` must extend.
 abstract class ChromeCastPlatform {
@@ -12,6 +13,8 @@ abstract class ChromeCastPlatform {
   /// Defaults to [MethodChannelChromeCast].
   static get instance => _instance;
 
+  Stream<VideoProgress> get progressStreamEvents;
+
   /// Initializes the platform interface with [id].
   ///
   /// This method is called when the plugin is first initialized.

lib/src/chrome_cast/method_channel_chrome_cast.dart

@@ -5,6 +5,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_video_cast/src/chrome_cast/chrome_cast_event.dart';
 import 'package:flutter_video_cast/src/chrome_cast/chrome_cast_platform.dart';
+import 'package:flutter_video_cast/src/chrome_cast/video_progress_model.dart';
 import 'package:stream_transform/stream_transform.dart';
 
 /// An implementation of [ChromeCastPlatform] that uses [MethodChannel] to communicate with the native code.
@@ -25,10 +26,17 @@ class MethodChannelChromeCast extends ChromeCastPlatform {
   // different stream views of this Controller.
   final _eventStreamController = StreamController<ChromeCastEvent>.broadcast();
 
+  final _progressStreamController = StreamController<VideoProgress>.broadcast();
+
   // Returns a filtered view of the events in the _controller, by id.
   Stream<ChromeCastEvent> _events(int id) =>
       _eventStreamController.stream.where((event) => event.id == id);
 
+  @override
+  Stream<VideoProgress> get progressStreamEvents =>
+  _progressStreamController.stream;
+
+
   @override
   Future<void> init(int id) {
     MethodChannel channel;
@@ -130,6 +138,10 @@ class MethodChannelChromeCast extends ChromeCastPlatform {
         _eventStreamController
             .add(RequestDidFailEvent(id, call.arguments['error']));
         break;
+      case 'chromeCast#getVideoProgress':
+        var progress = VideoProgress.fromJson(call.arguments.cast<String,String>());
+        _progressStreamController.sink.add(VideoProgress.fromJson(call.arguments.cast<String,String>()));
+        break;
       default:
         throw MissingPluginException();
     }

lib/src/chrome_cast/video_progress_model.dart

@@ -0,0 +1,13 @@
+class VideoProgress {
+  Duration currentProgress;
+  Duration videoDuration;
+
+  VideoProgress({this.currentProgress, this.videoDuration});
+
+  VideoProgress.fromJson(Map<String, String> map) {
+    currentProgress =
+        Duration(milliseconds: double.parse(map['progress']).toInt());
+    videoDuration =
+        Duration(milliseconds: double.parse(map['duration']).toInt());
+  }
+}