Add basic cast support

android/build.gradle

@@ -45,7 +45,7 @@ allprojects {
 }
 
 dependencies {
-    implementation 'com.bitmovin.player:player:3.45.0+jason'
+    api 'com.bitmovin.player:player:3.45.0+jason'
     implementation 'com.fasterxml.jackson.module:jackson-module-kotlin:2.14.1'
     implementation 'androidx.concurrent:concurrent-futures-ktx:1.1.0'
 }

android/src/main/kotlin/com/bitmovin/player/flutter/FlutterPlayer.kt

@@ -99,6 +99,10 @@ class FlutterPlayer(
             Methods.GET_SUBTITLE -> subtitle?.let { JSubtitleTrack(it).toJsonString() } ?: Unit
             Methods.SET_SUBTITLE -> setSubtitle(arg.asOptionalString)
             Methods.REMOVE_SUBTITLE -> removeSubtitle(arg.asString)
+            Methods.IS_CAST_AVAILABLE -> isCastAvailable
+            Methods.IS_CASTING -> isCasting
+            Methods.CAST_VIDEO -> castVideo()
+            Methods.CAST_STOP -> castStop()
             else -> throw NotImplementedError()
         }
 

android/src/main/kotlin/com/bitmovin/player/flutter/Methods.kt

@@ -2,8 +2,10 @@ package com.bitmovin.player.flutter
 
 class Methods {
     companion object {
-        // Player related methods
+        // Static methods
         const val CREATE_PLAYER = "createPlayer"
+
+        // Player related methods
         const val LOAD_WITH_SOURCE_CONFIG = "loadWithSourceConfig"
         const val LOAD_WITH_SOURCE = "loadWithSource"
         const val PLAY = "play"
@@ -24,6 +26,10 @@ class Methods {
         const val SET_SUBTITLE = "setSubtitle"
         const val GET_SUBTITLE = "getSubtitle"
         const val REMOVE_SUBTITLE = "removeSubtitle"
+        const val IS_CAST_AVAILABLE = "isCastAvailable"
+        const val IS_CASTING = "isCasting"
+        const val CAST_VIDEO = "castVideo"
+        const val CAST_STOP = "castSTop"
 
         // Player view related methods
         const val DESTROY_PLAYER_VIEW = "destroyPlayerView"
@@ -33,5 +39,10 @@ class Methods {
         // Widevine DRM related methods
         const val WIDEVINE_PREPARE_MESSAGE = "widevinePrepareMessage"
         const val WIDEVINE_PREPARE_LICENSE = "widevinePrepareLicense"
+
+        // Cast related methods
+        const val CAST_MANAGER_INITIALIZE = "castManagerInitialize"
+        const val CAST_MANAGER_UPDATE_CONTEXT = "castManagerUpdateContext"
+        const val CAST_MANAGER_SEND_MESSAGE = "castManagerSendMessage"
     }
 }

android/src/main/kotlin/com/bitmovin/player/flutter/PlayerPlugin.kt

@@ -1,5 +1,9 @@
 package com.bitmovin.player.flutter
 
+import android.app.Activity
+import com.bitmovin.player.casting.BitmovinCastManager
+import com.bitmovin.player.flutter.json.JBitmovinCastManagerOptions
+import com.bitmovin.player.flutter.json.JBitmovinCastManagerSendMessageArgs
 import com.bitmovin.player.flutter.json.JCreatePlayerArgs
 import com.bitmovin.player.flutter.json.JMethodArgs
 import com.bitmovin.player.flutter.json.JsonMethodHandler
@@ -11,6 +15,7 @@ import java.lang.ref.WeakReference
 
 class PlayerPlugin : FlutterPlugin, ActivityAware {
     private var flutterPluginBindingReference = WeakReference<FlutterPlugin.FlutterPluginBinding>(null)
+    private var activity = WeakReference<Activity?>(null)
 
     private fun register(registrar: FlutterPlugin.FlutterPluginBinding) {
         registrar
@@ -24,6 +29,9 @@ class PlayerPlugin : FlutterPlugin, ActivityAware {
     ): Any =
         when (method) {
             Methods.CREATE_PLAYER -> createPlayer(arguments.asCreatePlayerArgs) != null
+            Methods.CAST_MANAGER_INITIALIZE -> initializeCastManager(arguments.asCastManagerOptions)
+            Methods.CAST_MANAGER_UPDATE_CONTEXT -> castManagerUpdateContext()
+            Methods.CAST_MANAGER_SEND_MESSAGE -> sendCastMessage(arguments.asCastSendMessageArgs)
             else -> throw NotImplementedError()
         }
 
@@ -43,6 +51,22 @@ class PlayerPlugin : FlutterPlugin, ActivityAware {
             )
         }
 
+    private fun initializeCastManager(options: JBitmovinCastManagerOptions) {
+        val wasInitialized = BitmovinCastManager.isInitialized()
+        BitmovinCastManager.initialize(options.applicationId, options.messageNamespace)
+        if (!wasInitialized) castManagerUpdateContext()
+    }
+
+    private fun castManagerUpdateContext() {
+        activity.get()?.let {
+            BitmovinCastManager.getInstance().updateContext(it)
+        }
+    }
+
+    private fun sendCastMessage(options: JBitmovinCastManagerSendMessageArgs) {
+        BitmovinCastManager.getInstance().sendMessage(options.message, options.messageNamespace)
+    }
+
     override fun onAttachedToEngine(flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
         flutterPluginBindingReference = WeakReference(flutterPluginBinding)
         val handler = JsonMethodHandler(this::onMethodCall)
@@ -54,14 +78,20 @@ class PlayerPlugin : FlutterPlugin, ActivityAware {
     }
 
     override fun onAttachedToActivity(binding: ActivityPluginBinding) {
+        activity = WeakReference(binding.activity)
         flutterPluginBindingReference.get()?.let {
             register(it)
         }
+        if (BitmovinCastManager.isInitialized()) {
+            castManagerUpdateContext()
+        }
     }
 
     override fun onDetachedFromActivityForConfigChanges() {}
 
     override fun onReattachedToActivityForConfigChanges(binding: ActivityPluginBinding) {}
 
-    override fun onDetachedFromActivity() {}
+    override fun onDetachedFromActivity() {
+        activity = WeakReference(null)
+    }
 }

android/src/main/kotlin/com/bitmovin/player/flutter/json/JsonObjects.kt

@@ -8,6 +8,7 @@ import com.bitmovin.player.api.media.subtitle.SubtitleTrack
 import com.bitmovin.player.api.source.SourceType
 import com.bitmovin.player.api.source.TimelineReferencePoint
 import com.bitmovin.player.api.ui.ScalingMode
+import com.bitmovin.player.casting.BitmovinCastManager
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import io.flutter.plugin.common.MethodCall
 import java.security.InvalidParameterException
@@ -162,6 +163,16 @@ internal class JPlayerConfig(override var map: Map<*, *>) : JStruct {
     val licensingConfig by structGetter(::JLicensingConfig)
     val liveConfig by structGetter(::JLiveConfig)
     val analyticsConfig by structGetter(::JAnalyticsConfig)
+    val remoteControlConfig by structGetter(::JRemoteControlConfig)
+}
+
+internal class JRemoteControlConfig(override var map: Map<*, *>) : JStruct {
+    val receiverStylesheetUrl by GetString
+    val customReceiverConfig by GetStringMap
+    val isCastEnabled by GetBool
+    val sendManifestRequestsWithCredentials by GetBool
+    val sendSegmentRequestsWithCredentials by GetBool
+    val sendDrmLicenseRequestsWithCredentials by GetBool
 }
 
 internal class JSubtitleTrack(override var map: Map<*, *>) : JStruct {
@@ -191,9 +202,23 @@ internal class JSubtitleTrack(override var map: Map<*, *>) : JStruct {
 internal value class JMethodArgs(private val call: MethodCall) {
     val asCreatePlayerArgs get() = JCreatePlayerArgs(asMap)
     val asPlayerMethodArgs get() = JPlayerMethodArg(asMap)
+    val asCastManagerOptions get() = JBitmovinCastManagerOptions(asMap)
+    val asCastSendMessageArgs get() = JBitmovinCastManagerSendMessageArgs(asMap)
     private val asMap get() = call.arguments as Map<*, *>
 }
 
+/** Arguments for [BitmovinCastManager.initialize]*/
+internal class JBitmovinCastManagerOptions(override var map: Map<*, *>) : JStruct {
+    val applicationId by GetString
+    val messageNamespace by GetString
+}
+
+/** Arguments for [BitmovinCastManager.sendMessage]*/
+internal class JBitmovinCastManagerSendMessageArgs(override var map: Map<*, *>) : JStruct {
+    val message by GetString
+    val messageNamespace by GetString
+}
+
 /** Arguments for [Player.create]. */
 internal class JCreatePlayerArgs(override var map: Map<*, *>) : JStruct {
     val id by GetString.require()

android/src/main/kotlin/com/bitmovin/player/flutter/json/JsonToNative.kt

@@ -7,6 +7,7 @@ import com.bitmovin.analytics.api.SourceMetadata
 import com.bitmovin.player.api.LicensingConfig
 import com.bitmovin.player.api.PlaybackConfig
 import com.bitmovin.player.api.PlayerConfig
+import com.bitmovin.player.api.casting.RemoteControlConfig
 import com.bitmovin.player.api.drm.DrmConfig
 import com.bitmovin.player.api.drm.WidevineConfig
 import com.bitmovin.player.api.live.LiveConfig
@@ -71,6 +72,7 @@ internal fun JPlayerConfig.toNative() =
         playbackConfig?.let { config.playbackConfig = it.toNative() }
         licensingConfig?.let { config.licensingConfig = it.toNative() }
         liveConfig?.let { config.liveConfig = it.toNative() }
+        remoteControlConfig?.let { config.remoteControlConfig = it.toNative() }
     }
 
 internal fun JAnalyticsConfig.toNative(): AnalyticsConfig =
@@ -159,6 +161,18 @@ internal fun JLiveConfig.toNative() =
         liveEdgeOffset?.let { config.liveEdgeOffset = it }
     }
 
+internal fun JRemoteControlConfig.toNative() =
+    RemoteControlConfig().also { config ->
+        receiverStylesheetUrl?.let { config.receiverStylesheetUrl = it }
+        customReceiverConfig?.let { config.customReceiverConfig = it }
+        isCastEnabled?.let { config.isCastEnabled = it }
+        sendManifestRequestsWithCredentials?.let { config.sendManifestRequestsWithCredentials = it }
+        sendSegmentRequestsWithCredentials?.let { config.sendSegmentRequestsWithCredentials = it }
+        sendDrmLicenseRequestsWithCredentials?.let {
+            config.sendDrmLicenseRequestsWithCredentials = it
+        }
+    }
+
 internal fun JSubtitleTrack.toNative() =
     SubtitleTrack(
         url = url,

example/android/app/build.gradle

@@ -75,4 +75,8 @@ flutter {
 dependencies {
     implementation "androidx.appcompat:appcompat:1.6.1"
     implementation "androidx.multidex:multidex:2.0.1"
+
+    // only needed if the casting feature is used
+    implementation "com.google.android.gms:play-services-cast-framework:21.3.0"
+    implementation "androidx.mediarouter:mediarouter:1.3.1"
 }

example/android/app/src/main/AndroidManifest.xml

@@ -11,7 +11,7 @@
             android:name=".MainActivity"
             android:exported="true"
             android:launchMode="singleTop"
-            android:theme="@style/LaunchTheme"
+            android:theme="@style/Theme.AppCompat.NoActionBar"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">
@@ -35,5 +35,27 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+
+
+        <!-- Cast control activity. Only needed for casting. -->
+        <activity
+            android:name="com.bitmovin.player.casting.ExpandedControllerActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:launchMode="singleTask"
+            android:screenOrientation="portrait">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+            </intent-filter>
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value="com.bitmovin.player.flutter.example.MainActivity" />
+        </activity>
+
+       <!-- Meta-data needed for Google cast usage -->
+       <meta-data
+           android:name="com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME"
+           android:value="com.bitmovin.player.casting.BitmovinCastOptionsProvider" />
+
     </application>
 </manifest>

example/android/app/src/main/kotlin/com/bitmovin/player/flutter/example/MainActivity.kt

@@ -1,5 +1,21 @@
 package com.bitmovin.player.flutter.example
 
-import io.flutter.embedding.android.FlutterActivity
+import android.os.Bundle
+import android.util.Log
+import com.google.android.gms.cast.framework.CastContext
+import io.flutter.embedding.android.FlutterFragmentActivity
 
-class MainActivity : FlutterActivity()
+// Bitmovin Cast SDK requires the Activity to be a subclass of `FragmentActivity`.
+class MainActivity : FlutterFragmentActivity() {
+    @Override
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        try {
+            // Load Google Cast context eagerly in order to ensure that
+            // the cast state is updated correctly.
+            CastContext.getSharedInstance(this, Runnable::run)
+        } catch (e: Exception) {
+            Log.w("MainActivity", "Could not initialize cast context", e)
+        }
+    }
+}

example/lib/main.dart

@@ -1,6 +1,7 @@
 import 'package:bitmovin_player_example/pages/analytics.dart';
 import 'package:bitmovin_player_example/pages/audio_only.dart';
 import 'package:bitmovin_player_example/pages/basic_playback.dart';
+import 'package:bitmovin_player_example/pages/cast.dart';
 import 'package:bitmovin_player_example/pages/custom_html_ui.dart';
 import 'package:bitmovin_player_example/pages/drm_playback.dart';
 import 'package:bitmovin_player_example/pages/event_subscription.dart';
@@ -33,6 +34,7 @@ class _MyAppState extends State<MyApp> {
         EventSubscription.routeName: (_) => const EventSubscription(),
         CustomHtmlUi.routeName: (_) => const CustomHtmlUi(),
         FullscreenHandling.routeName: (_) => const FullscreenHandling(),
+        Cast.routeName: (_) => const Cast(),
       },
       home: const Scaffold(
         body: Home(),