android: custom initialization of the WebRTC module

Set our own audio device manager so we can tweak it if need be (enabling /
disabling the HW AEC on specific devices).

Switch to using the software video encoder / decoder. This may feel like a
downgrade, but it has advantages:

- simulcast is now working (on par with iOS)
- certain devices have broken VP8 HW encoders (I'm looking at you Samsung Galaxy
S7) so this fixes that

android/sdk/src/main/java/org/jitsi/meet/sdk/ReactInstanceManagerHolder.java

@@ -29,6 +29,17 @@ import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.common.LifecycleState;
 import com.facebook.react.devsupport.DevInternalSettings;
 import com.facebook.react.modules.core.DeviceEventManagerModule;
+import com.facebook.react.uimanager.ViewManager;
+import com.oney.WebRTCModule.RTCVideoViewManager;
+import com.oney.WebRTCModule.WebRTCModule;
+
+import org.webrtc.SoftwareVideoDecoderFactory;
+import org.webrtc.SoftwareVideoEncoderFactory;
+import org.webrtc.VideoDecoderFactory;
+import org.webrtc.VideoEncoderFactory;
+import org.webrtc.audio.AudioDeviceModule;
+import org.webrtc.audio.JavaAudioDeviceModule;
+import org.webrtc.voiceengine.WebRtcAudioManager;
 
 import java.lang.reflect.Constructor;
 import java.util.ArrayList;
@@ -47,8 +58,7 @@ class ReactInstanceManagerHolder {
      */
     private static ReactInstanceManager reactInstanceManager;
 
-    private static List<NativeModule> createNativeModules(
-            ReactApplicationContext reactContext) {
+    private static List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
         List<NativeModule> nativeModules
             = new ArrayList<>(Arrays.<NativeModule>asList(
                 new AndroidSettingsModule(reactContext),
@@ -66,6 +76,21 @@ class ReactInstanceManagerHolder {
             nativeModules.add(new RNConnectionService(reactContext));
         }
 
+        // Initialize the WebRTC module by hand, since we want to override some
+        // initialization options.
+        WebRTCModule.Options options = new WebRTCModule.Options();
+
+        AudioDeviceModule adm = JavaAudioDeviceModule.builder(reactContext)
+            .createAudioDeviceModule();
+        VideoDecoderFactory videoDecoderFactory = new SoftwareVideoDecoderFactory();
+        VideoEncoderFactory videoEncoderFactory = new SoftwareVideoEncoderFactory();
+
+        options.setAudioDeviceModule(adm);
+        options.setVideoDecoderFactory(videoDecoderFactory);
+        options.setVideoEncoderFactory(videoEncoderFactory);
+
+        nativeModules.add(new WebRTCModule(reactContext, options));
+
         try {
             Class<?> amplitudeModuleClass = Class.forName("org.jitsi.meet.sdk.AmplitudeModule");
             Constructor constructor = amplitudeModuleClass.getConstructor(ReactApplicationContext.class);
@@ -77,6 +102,13 @@ class ReactInstanceManagerHolder {
         return nativeModules;
     }
 
+    private static List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+        return Arrays.<ViewManager>asList(
+            // WebRTC, see createNativeModules for details.
+            new RTCVideoViewManager()
+        );
+    }
+
     /**
      * Helper function to send an event to JavaScript.
      *
@@ -158,7 +190,6 @@ class ReactInstanceManagerHolder {
                 new com.facebook.react.shell.MainReactPackage(),
                 new com.oblador.vectoricons.VectorIconsPackage(),
                 new com.ocetnik.timer.BackgroundTimerPackage(),
-                new com.oney.WebRTCModule.WebRTCModulePackage(),
                 new com.reactnativecommunity.asyncstorage.AsyncStoragePackage(),
                 new com.reactnativecommunity.webview.RNCWebViewPackage(),
                 new com.rnimmersive.RNImmersivePackage(),
@@ -168,6 +199,10 @@ class ReactInstanceManagerHolder {
                     public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
                         return ReactInstanceManagerHolder.createNativeModules(reactContext);
                     }
+                    @Override
+                    public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+                        return ReactInstanceManagerHolder.createViewManagers(reactContext);
+                    }
                 }));
 
         try {