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 18 package android.filterpacks.base; 19 20 import android.filterfw.core.Filter; 21 import android.filterfw.core.FilterContext; 22 import android.filterfw.core.Frame; 23 import android.filterfw.core.FrameFormat; 24 import android.filterfw.core.GenerateFieldPort; 25 import android.filterfw.core.GenerateFinalPort; 26 27 /** 28 * @hide 29 */ 30 public class FrameSource extends Filter { 31 32 @GenerateFinalPort(name = "format") 33 private FrameFormat mFormat; 34 35 @GenerateFieldPort(name = "frame", hasDefault = true) 36 private Frame mFrame = null; 37 38 @GenerateFieldPort(name = "repeatFrame", hasDefault = true) 39 private boolean mRepeatFrame = false; 40 41 public FrameSource(String name) { 42 super(name); 43 } 44 45 @Override 46 public void setupPorts() { 47 addOutputPort("frame", mFormat); 48 } 49 50 @Override 51 public void process(FilterContext context) { 52 if (mFrame != null) { 53 // Push output 54 pushOutput("frame", mFrame); 55 } 56 57 if (!mRepeatFrame) { 58 // Close output port as we are done here 59 closeOutputPort("frame"); 60 } 61 } 62 63 } 64
