| /* |
| * 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.filterpacks.base; |
| |
| import android.filterfw.core.Filter; |
| import android.filterfw.core.FilterContext; |
| import android.filterfw.core.Frame; |
| import android.filterfw.core.FrameFormat; |
| import android.filterfw.core.GenerateFieldPort; |
| import android.filterfw.core.GenerateFinalPort; |
| |
| /** |
| * @hide |
| */ |
| public class FrameFetch extends Filter { |
| |
| @GenerateFinalPort(name = "format", hasDefault = true) |
| private FrameFormat mFormat; |
| |
| @GenerateFieldPort(name = "key") |
| private String mKey; |
| |
| @GenerateFieldPort(name = "repeatFrame", hasDefault = true) |
| private boolean mRepeatFrame = false; |
| |
| public FrameFetch(String name) { |
| super(name); |
| } |
| |
| @Override |
| public void setupPorts() { |
| addOutputPort("frame", mFormat == null ? FrameFormat.unspecified() : mFormat); |
| } |
| |
| public void process(FilterContext context) { |
| Frame output = context.fetchFrame(mKey); |
| if (output != null) { |
| pushOutput("frame", output); |
| if (!mRepeatFrame) { |
| closeOutputPort("frame"); |
| } |
| } else { |
| delayNextProcess(250); |
| } |
| } |
| |
| } |