1227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/* 2227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Copyright (C) 2012 The Android Open Source Project 3227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 4227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Licensed under the Apache License, Version 2.0 (the "License"); 5227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * you may not use this file except in compliance with the License. 6227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * You may obtain a copy of the License at 7227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 8227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * http://www.apache.org/licenses/LICENSE-2.0 9227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * 10227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Unless required by applicable law or agreed to in writing, software 11227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * distributed under the License is distributed on an "AS IS" BASIS, 12227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * See the License for the specific language governing permissions and 14227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * limitations under the License. 15227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks */ 16227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 17227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendrickspackage androidx.media.filterpacks.numeric; 18227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 19227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport android.util.Log; 20227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.Filter; 21227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.FrameType; 22227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.FrameValue; 23227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.MffContext; 24227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.OutputPort; 25227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricksimport androidx.media.filterfw.Signature; 26227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 27227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks/** 28227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * Filter to calculate the 2-norm of the inputs. i.e. sqrt(x^2 + y^2) 29227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks * TODO: Add support for more norms in the future. 30227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks */ 31227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendrickspublic final class NormFilter extends Filter { 32227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private static final String TAG = "NormFilter"; 33227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks private static boolean mLogVerbose = Log.isLoggable(TAG, Log.VERBOSE); 34227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 35227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public NormFilter(MffContext context, String name) { 36227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks super(context, name); 37227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 38227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 39227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 40227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks public Signature getSignature() { 41227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameType floatT = FrameType.single(float.class); 42227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks return new Signature() 43227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .addInputPort("x", Signature.PORT_REQUIRED, floatT) 44227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .addInputPort("y", Signature.PORT_REQUIRED, floatT) 45227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .addOutputPort("norm", Signature.PORT_REQUIRED, floatT) 46227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks .disallowOtherPorts(); 47227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 48227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 49227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks @Override 50227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks protected void onProcess() { 51227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameValue xFrameValue = getConnectedInputPort("x").pullFrame().asFrameValue(); 52227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks float xValue = ((Float)xFrameValue.getValue()).floatValue(); 53227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameValue yFrameValue = getConnectedInputPort("y").pullFrame().asFrameValue(); 54227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks float yValue = ((Float)yFrameValue.getValue()).floatValue(); 55227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks 56227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks float norm = (float) Math.hypot(xValue, yValue); 57227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks if (mLogVerbose) Log.v(TAG, "Norm = " + norm); 58227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks OutputPort outPort = getConnectedOutputPort("norm"); 59227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks FrameValue outFrame = outPort.fetchAvailableFrame(null).asFrameValue(); 60227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks outFrame.setValue(norm); 61227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks outPort.pushFrame(outFrame); 62227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks } 63227b47625d7482b5b47ad0e4c70ce0a246236adeBenjamin Hendricks} 64