| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| package android.filterfw.core; |
| |
| import java.util.Random; |
| import java.util.Vector; |
| |
| import android.filterfw.core.Filter; |
| import android.filterfw.core.Scheduler; |
| |
| /** |
| * @hide |
| */ |
| public class RandomScheduler extends Scheduler { |
| |
| private Random mRand = new Random(); |
| |
| public RandomScheduler(FilterGraph graph) { |
| super(graph); |
| } |
| |
| @Override |
| public void reset() { |
| } |
| |
| @Override |
| public Filter scheduleNextNode() { |
| Vector<Filter> candidates = new Vector<Filter>(); |
| for (Filter filter : getGraph().getFilters()) { |
| if (filter.canProcess()) |
| candidates.add(filter); |
| } |
| if (candidates.size() > 0) { |
| int r = mRand.nextInt(candidates.size()); |
| return candidates.elementAt(r); |
| } |
| return null; |
| } |
| } |