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.GenerateFinalPort; 25import android.filterfw.core.MutableFrameFormat; 26 27/** 28 * @hide 29 */ 30public class RetargetFilter extends Filter { 31 32 @GenerateFinalPort(name = "target", hasDefault = false) 33 private String mTargetString; 34 35 private MutableFrameFormat mOutputFormat; 36 private int mTarget = -1; 37 38 public RetargetFilter(String name) { 39 super(name); 40 } 41 42 @Override 43 public void setupPorts() { 44 // Setup target 45 mTarget = FrameFormat.readTargetString(mTargetString); 46 47 // Add ports 48 addInputPort("frame"); 49 addOutputBasedOnInput("frame", "frame"); 50 } 51 52 @Override 53 public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) { 54 MutableFrameFormat retargeted = inputFormat.mutableCopy(); 55 retargeted.setTarget(mTarget); 56 return retargeted; 57 } 58 59 @Override 60 public void process(FilterContext context) { 61 // Get input frame 62 Frame input = pullInput("frame"); 63 64 // Create output frame 65 Frame output = context.getFrameManager().duplicateFrameToTarget(input, mTarget); 66 67 // Push output 68 pushOutput("frame", output); 69 70 // Release pushed frame 71 output.release(); 72 } 73 74} 75