Android: Handle SurfaceTextureHelper ctor failure for decoder and capturer

webrtc/api/java/android/org/webrtc/VideoCapturerAndroid.java

 /*
  *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 351 matching lines @@
 
   // Note that this actually opens the camera, and Camera callbacks run on the
   // thread that calls open(), so this is done on the CameraThread.
   @Override
   public void startCapture(
       final int width, final int height, final int framerate,
       final SurfaceTextureHelper surfaceTextureHelper, final Context applicationContext,
       final CapturerObserver frameObserver) {
     Logging.d(TAG, "startCapture requested: " + width + "x" + height + "@" + framerate);
     if (surfaceTextureHelper == null) {
-      throw new IllegalArgumentException("surfaceTextureHelper not set.");
+      frameObserver.onCapturerStarted(false /* success */);
+      if (eventsHandler != null) {
+        eventsHandler.onCameraError("No SurfaceTexture created.");
+      }
+      return;
     }
     if (applicationContext == null) {
       throw new IllegalArgumentException("applicationContext not set.");
     }
     if (frameObserver == null) {
       throw new IllegalArgumentException("frameObserver not set.");
     }
     synchronized (handlerLock) {
       if (this.cameraThreadHandler != null) {
         throw new RuntimeException("Camera has already been started.");
@@ skipping 356 matching lines @@
       // Undo the mirror that the OS "helps" us with.
       // http://developer.android.com/reference/android/hardware/Camera.html#setDisplayOrientation(int)
       transformMatrix =
           RendererCommon.multiplyMatrices(transformMatrix, RendererCommon.horizontalFlipMatrix());
     }
     cameraStatistics.addFrame();
     frameObserver.onTextureFrameCaptured(captureFormat.width, captureFormat.height, oesTextureId,
         transformMatrix, rotation, timestampNs);
   }
 }