release resource. stop caputuring when webrtc ends

src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java

@@ -18,6 +18,7 @@ import android.widget.Toast;
 import com.google.common.base.Optional;
 import com.google.common.collect.ImmutableList;
 
+import org.webrtc.RendererCommon;
 import org.webrtc.SurfaceViewRenderer;
 import org.webrtc.VideoTrack;
 
@@ -241,6 +242,8 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
 
     @Override
     public void onStop() {
+        binding.remoteVideo.release();
+        binding.localVideo.release();
         releaseProximityWakeLock();
         //TODO maybe we want to finish if call had ended
         super.onStop();

src/main/java/eu/siacs/conversations/xmpp/jingle/WebRTCWrapper.java

@@ -139,6 +139,7 @@ public class WebRTCWrapper {
     private AppRTCAudioManager appRTCAudioManager = null;
     private Context context = null;
     private EglBase eglBase = null;
+    private Optional<CameraVideoCapturer> optionalCapturer;
 
     public WebRTCWrapper(final EventCallback eventCallback) {
         this.eventCallback = eventCallback;
@@ -167,10 +168,10 @@ public class WebRTCWrapper {
 
         final MediaStream stream = peerConnectionFactory.createLocalMediaStream("my-media-stream");
 
-        final Optional<CameraVideoCapturer> optionalCapturer = getVideoCapturer();
+         this.optionalCapturer = getVideoCapturer();
 
-        if (optionalCapturer.isPresent()) {
+        if (this.optionalCapturer.isPresent()) {
-            final CameraVideoCapturer capturer = optionalCapturer.get();
+            final CameraVideoCapturer capturer = this.optionalCapturer.get();
             final VideoSource videoSource = peerConnectionFactory.createVideoSource(false);
             SurfaceTextureHelper surfaceTextureHelper = SurfaceTextureHelper.create("webrtc", eglBase.getEglBaseContext());
             capturer.initialize(surfaceTextureHelper, requireContext(), videoSource.getCapturerObserver());
@@ -207,6 +208,16 @@ public class WebRTCWrapper {
         if (audioManager != null) {
             mainHandler.post(audioManager::stop);
         }
+        this.localVideoTrack = null;
+        this.remoteVideoTrack = null;
+        if (this.optionalCapturer.isPresent()) {
+            try {
+                this.optionalCapturer.get().stopCapture();
+            } catch (InterruptedException e) {
+                Log.e(Config.LOGTAG,"unable to stop capturing");
+            }
+        }
+        eglBase.release();
     }
 
     public boolean isMicrophoneEnabled() {
@@ -326,7 +337,7 @@ public class WebRTCWrapper {
     private Optional<CameraVideoCapturer> getVideoCapturer() {
         final CameraEnumerator enumerator = getCameraEnumerator();
         final String[] deviceNames = enumerator.getDeviceNames();
-        for (String deviceName : deviceNames) {
+        for (final String deviceName : deviceNames) {
             if (enumerator.isFrontFacing(deviceName)) {
                 return Optional.fromNullable(enumerator.createCapturer(deviceName, null));
             }

src/main/res/layout/activity_rtp_session.xml

@@ -35,24 +35,28 @@
 
         </android.support.design.widget.AppBarLayout>
 
-
-        <org.webrtc.SurfaceViewRenderer
-            android:id="@+id/local_video"
-            android:layout_width="100dp"
-            android:layout_height="100dp"
-            android:layout_below="@+id/app_bar_layout"
-            android:layout_alignParentEnd="true"
-            android:layout_alignParentRight="true"
-            android:visibility="gone" />
-
         <org.webrtc.SurfaceViewRenderer
             android:id="@+id/remote_video"
-            android:layout_width="100dp"
+            android:layout_width="match_parent"
             android:layout_height="100dp"
             android:layout_below="@+id/app_bar_layout"
             android:layout_alignParentStart="true"
             android:layout_alignParentLeft="true"
-            android:visibility="gone" />
+            android:layout_alignParentBottom="true"
+            android:visibility="visible" />
+
+        <org.webrtc.SurfaceViewRenderer
+            android:id="@+id/local_video"
+            android:layout_width="80dp"
+            android:layout_height="128dp"
+            android:layout_below="@+id/app_bar_layout"
+            android:layout_alignParentEnd="true"
+            android:layout_alignParentRight="true"
+            android:layout_marginTop="24dp"
+            android:layout_marginEnd="24dp"
+            android:layout_marginRight="24dp"
+            android:visibility="visible" />
+
 
         <RelativeLayout
             android:layout_width="288dp"