feat: add plugins management (#3909)

android/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java

@@ -123,6 +123,7 @@ import com.brentvatne.common.react.VideoEventEmitter;
 import com.brentvatne.common.toolbox.DebugLog;
 import com.brentvatne.react.BuildConfig;
 import com.brentvatne.react.R;
+import com.brentvatne.react.ReactNativeVideoManager;
 import com.brentvatne.receiver.AudioBecomingNoisyReceiver;
 import com.brentvatne.receiver.BecomingNoisyListener;
 import com.facebook.react.bridge.LifecycleEventListener;
@@ -258,6 +259,9 @@ public class ReactExoplayerView extends FrameLayout implements
     private long lastDuration = -1;
 
     private boolean viewHasDropped = false;
+
+    private String instanceId = String.valueOf(UUID.randomUUID());
+
     private void updateProgress() {
         if (player != null) {
             if (playerControlView != null && isPlayingAd() && controls) {
@@ -756,6 +760,7 @@ public class ReactExoplayerView extends FrameLayout implements
                 .setLoadControl(loadControl)
                 .setMediaSourceFactory(mediaSourceFactory)
                 .build();
+        ReactNativeVideoManager.Companion.getInstance().onInstanceCreated(instanceId, player);
         refreshDebugState();
         player.addListener(self);
         player.setVolume(muted ? 0.f : audioVolume * 1);
@@ -1150,6 +1155,7 @@ public class ReactExoplayerView extends FrameLayout implements
             player.removeListener(this);
             trackSelector = null;
 
+            ReactNativeVideoManager.Companion.getInstance().onInstanceRemoved(instanceId, player);
             player = null;
         }
 

android/src/main/java/com/brentvatne/exoplayer/ReactExoplayerViewManager.java

@@ -20,6 +20,7 @@ import com.brentvatne.common.api.SubtitleStyle;
 import com.brentvatne.common.react.VideoEventEmitter;
 import com.brentvatne.common.toolbox.DebugLog;
 import com.brentvatne.common.toolbox.ReactBridgeUtils;
+import com.brentvatne.react.ReactNativeVideoManager;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
 import com.facebook.react.common.MapBuilder;
@@ -97,12 +98,14 @@ public class ReactExoplayerViewManager extends ViewGroupManager<ReactExoplayerVi
     @NonNull
     @Override
     protected ReactExoplayerView createViewInstance(@NonNull ThemedReactContext themedReactContext) {
+        ReactNativeVideoManager.Companion.getInstance().registerView(this);
         return new ReactExoplayerView(themedReactContext, config);
     }
 
     @Override
     public void onDropViewInstance(ReactExoplayerView view) {
         view.cleanUpResources();
+        ReactNativeVideoManager.Companion.getInstance().unregisterView(this);
     }
 
     @Override

android/src/main/java/com/brentvatne/react/RNVPlugin.kt

@@ -0,0 +1,22 @@
+package com.brentvatne.react
+
+/**
+ * Plugin interface definition
+ */
+interface RNVPlugin {
+    /**
+     * Function called when a new player is created
+     * @param id: a random string identifying the player
+     * @param player: the instantiated player reference
+     */
+    fun onInstanceCreated(id: String, player: Any)
+
+    /**
+     * Function called when a player should be destroyed
+     * when this callback is called, the plugin shall free all
+     * resources and release all reference to Player object
+     * @param id: a random string identifying the player
+     * @param player: the player to release
+     */
+    fun onInstanceRemoved(id: String, player: Any)
+}

android/src/main/java/com/brentvatne/react/ReactNativeVideoManager.kt

@@ -0,0 +1,71 @@
+package com.brentvatne.react
+
+import com.brentvatne.common.toolbox.DebugLog
+import com.brentvatne.exoplayer.ReactExoplayerViewManager
+
+/**
+ * ReactNativeVideoManager is a singleton class which allows to manipulate / the global state of the app
+ * It handles the list of <Video view instanced and registration of plugins
+ */
+class ReactNativeVideoManager : RNVPlugin {
+    companion object {
+        private const val TAG = "ReactNativeVideoManager"
+
+        @Volatile
+        private var instance: ReactNativeVideoManager? = null
+
+        /**
+         * Singleton accessor
+         */
+        fun getInstance(): ReactNativeVideoManager =
+            instance ?: synchronized(this) {
+                instance ?: ReactNativeVideoManager().also { instance = it }
+            }
+    }
+
+    private var instanceList: ArrayList<ReactExoplayerViewManager> = ArrayList()
+    private var pluginList: ArrayList<RNVPlugin> = ArrayList()
+
+    /**
+     * register a new ReactExoplayerViewManager in the managed list
+     */
+    fun registerView(newInstance: ReactExoplayerViewManager): () -> Boolean =
+        {
+            if (instanceList.size > 2) {
+                DebugLog.d(TAG, "multiple Video displayed ?")
+            }
+            instanceList.add(newInstance)
+        }
+
+    /**
+     * unregister existing ReactExoplayerViewManager in the managed list
+     */
+    fun unregisterView(newInstance: ReactExoplayerViewManager): () -> Boolean =
+        {
+            instanceList.remove(newInstance)
+        }
+
+    /**
+     * register a new plugin in the managed list
+     */
+    fun registerPlugin(plugin: RNVPlugin) {
+        pluginList.add(plugin)
+        return
+    }
+
+    /**
+     * unregister a plugin from the managed list
+     */
+    fun unregisterPlugin(plugin: RNVPlugin) {
+        pluginList.remove(plugin)
+        return
+    }
+
+    override fun onInstanceCreated(id: String, player: Any) {
+        pluginList.forEach { it.onInstanceCreated(id, player) }
+    }
+
+    override fun onInstanceRemoved(id: String, player: Any) {
+        pluginList.forEach { it.onInstanceRemoved(id, player) }
+    }
+}