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 17 package com.android.camera.one.v2.sharedimagereader.util; 18 19 import com.android.camera.one.v2.camera2proxy.ForwardingImageProxy; 20 import com.android.camera.one.v2.camera2proxy.ImageProxy; 21 import com.android.camera.one.v2.sharedimagereader.ticketpool.Ticket; 22 23 import java.util.concurrent.atomic.AtomicBoolean; 24 25 import javax.annotation.concurrent.ThreadSafe; 26 27 /** 28 * Combines an {@link ImageProxy} with a {@link Ticket}. 29 */ 30 @ThreadSafe 31 public class TicketImageProxy extends ForwardingImageProxy { 32 private final Ticket mTicket; 33 private final AtomicBoolean mClosed; 34 35 public TicketImageProxy(ImageProxy image, Ticket ticket) { 36 super(image); 37 mTicket = ticket; 38 mClosed = new AtomicBoolean(false); 39 } 40 41 @Override 42 public void close() { 43 if (mClosed.getAndSet(true)) { 44 return; 45 } 46 // The ticket must be closed *after* the image is closed to avoid a race 47 // condition here in which another image is reserved before this one is 48 // actually released. 49 super.close(); 50 mTicket.close(); 51 } 52 } 53
