1/* 2 * Copyright (C) 2011 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 18package android.filterpacks.performance; 19 20import android.filterfw.core.Filter; 21import android.filterfw.core.FilterContext; 22import android.filterfw.core.Frame; 23import android.filterfw.core.FrameFormat; 24import android.filterfw.core.GenerateFieldPort; 25import android.filterfw.format.ObjectFormat; 26import android.os.SystemClock; 27 28/** 29 * @hide 30 */ 31public class ThroughputFilter extends Filter { 32 33 @GenerateFieldPort(name = "period", hasDefault = true) 34 private int mPeriod = 5; 35 36 private long mLastTime = 0; 37 38 private int mTotalFrameCount = 0; 39 private int mPeriodFrameCount = 0; 40 41 private FrameFormat mOutputFormat; 42 43 public ThroughputFilter(String name) { 44 super(name); 45 } 46 47 @Override 48 public void setupPorts() { 49 // Add input ports 50 addInputPort("frame"); 51 52 // Add output ports 53 mOutputFormat = ObjectFormat.fromClass(Throughput.class, FrameFormat.TARGET_SIMPLE); 54 addOutputBasedOnInput("frame", "frame"); 55 addOutputPort("throughput", mOutputFormat); 56 } 57 58 @Override 59 public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 60 return inputFormat; 61 } 62 63 @Override 64 public void open(FilterContext env) { 65 mTotalFrameCount = 0; 66 mPeriodFrameCount = 0; 67 mLastTime = 0; 68 } 69 70 @Override 71 public void process(FilterContext context) { 72 // Pass through input frame 73 Frame input = pullInput("frame"); 74 pushOutput("frame", input); 75 76 // Update stats 77 ++mTotalFrameCount; 78 ++mPeriodFrameCount; 79 80 // Check clock 81 if (mLastTime == 0) { 82 mLastTime = SystemClock.elapsedRealtime(); 83 } 84 long curTime = SystemClock.elapsedRealtime(); 85 86 // Output throughput info if time period is up 87 if ((curTime - mLastTime) >= (mPeriod * 1000)) { 88 FrameFormat inputFormat = input.getFormat(); 89 int pixelCount = inputFormat.getWidth() * inputFormat.getHeight(); 90 Throughput throughput = new Throughput(mTotalFrameCount, 91 mPeriodFrameCount, 92 mPeriod, 93 pixelCount); 94 Frame throughputFrame = context.getFrameManager().newFrame(mOutputFormat); 95 throughputFrame.setObjectValue(throughput); 96 pushOutput("throughput", throughputFrame); 97 mLastTime = curTime; 98 mPeriodFrameCount = 0; 99 } 100 } 101 102 103} 104