| /* |
| * 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; |
| |
| /** |
| * @hide |
| */ |
| public class OutputPort extends FilterPort { |
| |
| protected InputPort mTargetPort; |
| protected InputPort mBasePort; |
| |
| public OutputPort(Filter filter, String name) { |
| super(filter, name); |
| } |
| |
| public void connectTo(InputPort target) { |
| if (mTargetPort != null) { |
| throw new RuntimeException(this + " already connected to " + mTargetPort + "!"); |
| } |
| mTargetPort = target; |
| mTargetPort.setSourcePort(this); |
| } |
| |
| public boolean isConnected() { |
| return mTargetPort != null; |
| } |
| |
| public void open() { |
| super.open(); |
| if (mTargetPort != null && !mTargetPort.isOpen()) { |
| mTargetPort.open(); |
| } |
| } |
| |
| public void close() { |
| super.close(); |
| if (mTargetPort != null && mTargetPort.isOpen()) { |
| mTargetPort.close(); |
| } |
| } |
| |
| public InputPort getTargetPort() { |
| return mTargetPort; |
| } |
| |
| public Filter getTargetFilter() { |
| return mTargetPort == null ? null : mTargetPort.getFilter(); |
| } |
| |
| public void setBasePort(InputPort basePort) { |
| mBasePort = basePort; |
| } |
| |
| public InputPort getBasePort() { |
| return mBasePort; |
| } |
| |
| public boolean filterMustClose() { |
| return !isOpen() && isBlocking(); |
| } |
| |
| public boolean isReady() { |
| return (isOpen() && mTargetPort.acceptsFrame()) || !isBlocking(); |
| } |
| |
| @Override |
| public void clear() { |
| if (mTargetPort != null) { |
| mTargetPort.clear(); |
| } |
| } |
| |
| @Override |
| public void pushFrame(Frame frame) { |
| if (mTargetPort == null) { |
| throw new RuntimeException( |
| "Attempting to push frame on unconnected port: " + this + "!"); |
| } |
| mTargetPort.pushFrame(frame); |
| } |
| |
| @Override |
| public void setFrame(Frame frame) { |
| assertPortIsOpen(); |
| if (mTargetPort == null) { |
| throw new RuntimeException( |
| "Attempting to set frame on unconnected port: " + this + "!"); |
| } |
| mTargetPort.setFrame(frame); |
| } |
| |
| @Override |
| public Frame pullFrame() { |
| throw new RuntimeException("Cannot pull frame on " + this + "!"); |
| } |
| |
| @Override |
| public boolean hasFrame() { |
| return mTargetPort == null ? false : mTargetPort.hasFrame(); |
| } |
| |
| @Override |
| public String toString() { |
| return "output " + super.toString(); |
| } |
| } |