| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.hardware.camera2.utils; |
| |
| import android.os.DeadObjectException; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import java.lang.reflect.Method; |
| |
| /** |
| * Translate camera service status_t return values into exceptions. |
| * |
| * @see android.hardware.camera2.utils.CameraBinderDecorator#newInstance |
| * @hide |
| */ |
| public class CameraServiceBinderDecorator extends CameraBinderDecorator { |
| |
| private static final String TAG = "CameraServiceBinderDecorator"; |
| |
| static class CameraServiceBinderDecoratorListener |
| extends CameraBinderDecorator.CameraBinderDecoratorListener { |
| |
| // Pass through remote exceptions, unlike CameraBinderDecorator |
| @Override |
| public boolean onCatchException(Method m, Object[] args, Throwable t) { |
| |
| if (t instanceof DeadObjectException) { |
| // Can sometimes happen (camera service died) |
| // Pass on silently |
| } else if (t instanceof RemoteException) { |
| // Some other kind of remote exception - this is not normal, so let's at least |
| // note it before moving on |
| Log.e(TAG, "Unexpected RemoteException from camera service call.", t); |
| } |
| // All other exceptions also get sent onward |
| return false; |
| } |
| |
| } |
| |
| /** |
| * <p> |
| * Wraps the type T with a proxy that will check 'status_t' return codes |
| * from the native side of the camera service, and throw Java exceptions |
| * automatically based on the code. |
| * </p> |
| * |
| * @param obj object that will serve as the target for all method calls |
| * @param <T> the type of the element you want to wrap. This must be an interface. |
| * @return a proxy that will intercept all invocations to obj |
| */ |
| public static <T> T newInstance(T obj) { |
| return Decorator.<T> newInstance(obj, new CameraServiceBinderDecoratorListener()); |
| } |
| } |