| /* |
| * 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 abstract class InputPort extends FilterPort { |
| |
| protected OutputPort mSourcePort; |
| |
| public InputPort(Filter filter, String name) { |
| super(filter, name); |
| } |
| |
| public void setSourcePort(OutputPort source) { |
| if (mSourcePort != null) { |
| throw new RuntimeException(this + " already connected to " + mSourcePort + "!"); |
| } |
| mSourcePort = source; |
| } |
| |
| public boolean isConnected() { |
| return mSourcePort != null; |
| } |
| |
| public void open() { |
| super.open(); |
| if (mSourcePort != null && !mSourcePort.isOpen()) { |
| mSourcePort.open(); |
| } |
| } |
| |
| public void close() { |
| if (mSourcePort != null && mSourcePort.isOpen()) { |
| mSourcePort.close(); |
| } |
| super.close(); |
| } |
| |
| public OutputPort getSourcePort() { |
| return mSourcePort; |
| } |
| |
| public Filter getSourceFilter() { |
| return mSourcePort == null ? null : mSourcePort.getFilter(); |
| } |
| |
| public FrameFormat getSourceFormat() { |
| return mSourcePort != null ? mSourcePort.getPortFormat() : getPortFormat(); |
| } |
| |
| public Object getTarget() { |
| return null; |
| } |
| |
| public boolean filterMustClose() { |
| return !isOpen() && isBlocking() && !hasFrame(); |
| } |
| |
| public boolean isReady() { |
| return hasFrame() || !isBlocking(); |
| } |
| |
| public boolean acceptsFrame() { |
| return !hasFrame(); |
| } |
| |
| public abstract void transfer(FilterContext context); |
| } |