| /* |
| * 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.legacy; |
| |
| import android.hardware.camera2.utils.CameraBinderDecorator; |
| import android.util.AndroidException; |
| |
| import static android.system.OsConstants.ENODEV; |
| |
| /** |
| * Utility class containing exception handling used solely by the compatibility mode shim. |
| */ |
| public class LegacyExceptionUtils { |
| private static final String TAG = "LegacyExceptionUtils"; |
| |
| /** |
| * Checked exception thrown when a BufferQueue has been abandoned by its consumer. |
| */ |
| public static class BufferQueueAbandonedException extends AndroidException { |
| public BufferQueueAbandonedException () {} |
| |
| public BufferQueueAbandonedException(String name) { |
| super(name); |
| } |
| |
| public BufferQueueAbandonedException(String name, Throwable cause) { |
| super(name, cause); |
| } |
| |
| public BufferQueueAbandonedException(Exception cause) { |
| super(cause); |
| } |
| } |
| |
| /** |
| * Throw error codes used by legacy device methods as exceptions. |
| * |
| * <p>Non-negative return values are passed through, negative return values are thrown as |
| * exceptions.</p> |
| * |
| * @param errorFlag error to throw as an exception. |
| * @throws {@link BufferQueueAbandonedException} for -ENODEV. |
| * @throws {@link UnsupportedOperationException} for an unknown negative error code. |
| * @return {@code errorFlag} if the value was non-negative, throws otherwise. |
| */ |
| public static int throwOnError(int errorFlag) throws BufferQueueAbandonedException { |
| if (errorFlag == CameraBinderDecorator.NO_ERROR) { |
| return CameraBinderDecorator.NO_ERROR; |
| } else if (errorFlag == -ENODEV) { |
| throw new BufferQueueAbandonedException(); |
| } |
| |
| if (errorFlag < 0) { |
| throw new UnsupportedOperationException("Unknown error " + errorFlag); |
| } |
| return errorFlag; |
| } |
| |
| private LegacyExceptionUtils() { |
| throw new AssertionError(); |
| } |
| } |