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 class StreamPort extends InputPort { 2465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private Frame mFrame; 2665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn private boolean mPersistent; 2765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 2865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public StreamPort(Filter filter, String name) { 2965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn super(filter, name); 3065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 3165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 3265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 3365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void clear() { 3465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mFrame != null) { 3565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.release(); 3665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame = null; 3765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 3865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 3965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 4165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void setFrame(Frame frame) { 4265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn assignFrame(frame, true); 4365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 4465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 4565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 4665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public void pushFrame(Frame frame) { 4765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn assignFrame(frame, false); 4865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 4965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn protected synchronized void assignFrame(Frame frame, boolean persistent) { 5165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn assertPortIsOpen(); 5265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn checkFrameType(frame, persistent); 5365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 5465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (persistent) { 5565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mFrame != null) { 5665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.release(); 5765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 5865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } else if (mFrame != null) { 5965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException( 6065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn "Attempting to push more than one frame on port: " + this + "!"); 6165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame = frame.retain(); 6365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.markReadOnly(); 6465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mPersistent = persistent; 6565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 6665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 6765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 6865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public synchronized Frame pullFrame() { 6965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Make sure we have a frame 7065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mFrame == null) { 7165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn throw new RuntimeException("No frame available to pull on port: " + this + "!"); 7265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 7365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 7465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn // Return a retained result 7565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn Frame result = mFrame; 7665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mPersistent) { 7765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame.retain(); 7865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } else { 7965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn mFrame = null; 8065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return result; 8265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 8565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public synchronized boolean hasFrame() { 8665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return mFrame != null; 8765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 8865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 8965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 9065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public String toString() { 9165953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn return "input " + super.toString(); 9265953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9365953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn 9465953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn @Override 9565953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn public synchronized void transfer(FilterContext context) { 9665953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn if (mFrame != null) { 9765953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn checkFrameManager(mFrame, context); 9865953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 9965953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn } 10065953da4636fbf5f0a24b8f5f2b5fa7d76ff13d9Marius Renn} 101