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.filterfw.core; 1965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn/** 2165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn * @hide 2265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn */ 2365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Rennpublic abstract class InputPort extends FilterPort { 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn protected OutputPort mSourcePort; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public InputPort(Filter filter, String name) { 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(filter, name); 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setSourcePort(OutputPort source) { 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mSourcePort != null) { 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException(this + " already connected to " + mSourcePort + "!"); 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mSourcePort = source; 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public boolean isConnected() { 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return mSourcePort != null; 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void open() { 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super.open(); 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mSourcePort != null && !mSourcePort.isOpen()) { 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mSourcePort.open(); 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void close() { 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mSourcePort != null && mSourcePort.isOpen()) { 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mSourcePort.close(); 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super.close(); 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public OutputPort getSourcePort() { 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return mSourcePort; 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public Filter getSourceFilter() { 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return mSourcePort == null ? null : mSourcePort.getFilter(); 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public FrameFormat getSourceFormat() { 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return mSourcePort != null ? mSourcePort.getPortFormat() : getPortFormat(); 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public Object getTarget() { 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return null; 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public boolean filterMustClose() { 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return !isOpen() && isBlocking() && !hasFrame(); 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public boolean isReady() { 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return hasFrame() || !isBlocking(); 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public boolean acceptsFrame() { 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return !hasFrame(); 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public abstract void transfer(FilterContext context); 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 86