165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/* 265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Copyright (C) 2011 The Android Open Source Project 365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Licensed under the Apache License, Version 2.0 (the "License"); 565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * you may not use this file except in compliance with the License. 665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * You may obtain a copy of the License at 765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * http://www.apache.org/licenses/LICENSE-2.0 965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * 1065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * Unless required by applicable law or agreed to in writing, software 1165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * distributed under the License is distributed on an "AS IS" BASIS, 1265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * See the License for the specific language governing permissions and 1465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * limitations under the License. 1565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 1665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 1765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 1865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpackage android.filterpacks.base; 1965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport java.util.Set; 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Filter; 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FilterContext; 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.Frame; 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.FrameFormat; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.GenerateFieldPort; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.GenerateFinalPort; 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.core.MutableFrameFormat; 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennimport android.filterfw.format.ObjectFormat; 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/** 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * @hide 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic class ObjectSource extends Filter { 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "object") 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Object mObject; 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFinalPort(name = "format", hasDefault = true) 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private FrameFormat mOutputFormat = FrameFormat.unspecified(); 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @GenerateFieldPort(name = "repeatFrame", hasDefault = true) 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn boolean mRepeatFrame = false; 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Frame mFrame; 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public ObjectSource(String name) { 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(name); 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setupPorts() { 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn addOutputPort("frame", mOutputFormat); 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void process(FilterContext context) { 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // If no frame has been created, create one now. 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mFrame == null) { 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mObject == null) { 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new NullPointerException("ObjectSource producing frame with no object set!"); 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn FrameFormat outputFormat = ObjectFormat.fromObject(mObject, FrameFormat.TARGET_SIMPLE); 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame = context.getFrameManager().newFrame(outputFormat); 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.setObjectValue(mObject); 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.setTimestamp(Frame.TIMESTAMP_UNKNOWN); 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Push output 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn pushOutput("frame", mFrame); 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Wait for free output 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (!mRepeatFrame) { 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn closeOutputPort("frame"); 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void tearDown(FilterContext context) { 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.release(); 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void fieldPortValueUpdated(String name, FilterContext context) { 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Release our internal frame, so that it is regenerated on the next call to process(). 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (name.equals("object")) { 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mFrame != null) { 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.release(); 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame = null; 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 94