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.base; 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.core.GenerateFinalPort; 26import android.filterfw.core.KeyValueMap; 27import android.filterfw.core.MutableFrameFormat; 28 29/** 30 * @hide 31 */ 32public class RetargetFilter extends Filter { 33 34 @GenerateFinalPort(name = "target", hasDefault = false) 35 private String mTargetString; 36 37 private MutableFrameFormat mOutputFormat; 38 private int mTarget = -1; 39 40 public RetargetFilter(String name) { 41 super(name); 42 } 43 44 @Override 45 public void setupPorts() { 46 // Setup target 47 mTarget = FrameFormat.readTargetString(mTargetString); 48 49 // Add ports 50 addInputPort("frame"); 51 addOutputBasedOnInput("frame", "frame"); 52 } 53 54 @Override 55 public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 56 MutableFrameFormat retargeted = inputFormat.mutableCopy(); 57 retargeted.setTarget(mTarget); 58 return retargeted; 59 } 60 61 @Override 62 public void process(FilterContext context) { 63 // Get input frame 64 Frame input = pullInput("frame"); 65 66 // Create output frame 67 Frame output = context.getFrameManager().duplicateFrameToTarget(input, mTarget); 68 69 // Push output 70 pushOutput("frame", output); 71 72 // Release pushed frame 73 output.release(); 74 } 75 76} 77