1 /* 2 * Copyright (C) 2015 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; 18 19 import com.android.camera.debug.Log.Tag; 20 import com.android.camera.debug.Logger; 21 import com.android.camera.one.v2.camera2proxy.ForwardingImageProxy; 22 import com.android.camera.one.v2.camera2proxy.ForwardingImageReader; 23 import com.android.camera.one.v2.camera2proxy.ImageProxy; 24 import com.android.camera.one.v2.camera2proxy.ImageReaderProxy; 25 26 import java.util.concurrent.atomic.AtomicBoolean; 27 import java.util.concurrent.atomic.AtomicInteger; 28 29 import javax.annotation.Nullable; 30 31 final class LoggingImageReader extends ForwardingImageReader { 32 private class LoggingImageProxy extends ForwardingImageProxy { 33 private final AtomicBoolean mClosed; 34 LoggingImageProxy(ImageProxy proxy)35 public LoggingImageProxy(ImageProxy proxy) { 36 super(proxy); 37 mClosed = new AtomicBoolean(false); 38 } 39 40 @Override close()41 public void close() { 42 if (!mClosed.getAndSet(true)) { 43 super.close(); 44 decrementOpenImageCount(); 45 } 46 } 47 } 48 49 private final Logger mLog; 50 private final AtomicInteger mNumOpenImages; 51 LoggingImageReader(ImageReaderProxy delegate, Logger.Factory logFactory)52 public LoggingImageReader(ImageReaderProxy delegate, Logger.Factory logFactory) { 53 super(delegate); 54 mLog = logFactory.create(new Tag("LoggingImageReader")); 55 mNumOpenImages = new AtomicInteger(0); 56 } 57 58 @Override 59 @Nullable acquireNextImage()60 public ImageProxy acquireNextImage() { 61 return decorateNewImage(super.acquireNextImage()); 62 } 63 64 @Override 65 @Nullable acquireLatestImage()66 public ImageProxy acquireLatestImage() { 67 return decorateNewImage(super.acquireLatestImage()); 68 } 69 70 @Nullable decorateNewImage(@ullable ImageProxy image)71 private ImageProxy decorateNewImage(@Nullable ImageProxy image) { 72 if (image == null) { 73 return null; 74 } 75 incrementOpenImageCount(); 76 return new LoggingImageProxy(image); 77 } 78 79 @Override close()80 public void close() { 81 mLog.d("Closing: " + toString()); 82 super.close(); 83 } 84 incrementOpenImageCount()85 private void incrementOpenImageCount() { 86 int numOpenImages = mNumOpenImages.incrementAndGet(); 87 if (numOpenImages >= getMaxImages()) { 88 mLog.e(String.format("Open Image Count (%d) exceeds maximum (%d)!", 89 numOpenImages, getMaxImages())); 90 } 91 } 92 decrementOpenImageCount()93 private void decrementOpenImageCount() { 94 int numOpenImages = mNumOpenImages.decrementAndGet(); 95 } 96 } 97