RefCountedBufferQueueController.java revision 9c94ab32a69a1ad3642a0f1e38e68bcfd97d3511
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.camera.async; 18 19/** 20 * Wraps a {@link BufferQueueController} with reference counting. 21 */ 22public class RefCountedBufferQueueController<T> implements BufferQueueController<T> { 23 private final RefCountBase<BufferQueueController> mBuffer; 24 25 public RefCountedBufferQueueController(BufferQueueController<T> stream) { 26 mBuffer = new RefCountBase<BufferQueueController>(stream, 1); 27 } 28 29 @Override 30 public void update(T element) { 31 mBuffer.get().update(element); 32 } 33 34 @Override 35 public boolean isClosed() { 36 return mBuffer.get().isClosed(); 37 } 38 39 public void addRef() { 40 mBuffer.addRef(); 41 } 42 43 @Override 44 public void close() { 45 mBuffer.close(); 46 } 47} 48