content: /*
   * 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.GenerateFinalPort;
  import android.filterfw.core.MutableFrameFormat;
  
  /**
   * @hide
   */
  public class RetargetFilter extends Filter {
  
      @GenerateFinalPort(name = "target", hasDefault = false)
      private String mTargetString;
  
      private MutableFrameFormat mOutputFormat;
      private int mTarget = -1;
  
      public RetargetFilter(String name) {
          super(name);
      }
  
      @Override
      public void setupPorts() {
          // Setup target
          mTarget = FrameFormat.readTargetString(mTargetString);
  
          // Add ports
          addInputPort("frame");
          addOutputBasedOnInput("frame", "frame");
      }
  
      @Override
      public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) {
          MutableFrameFormat retargeted = inputFormat.mutableCopy();
          retargeted.setTarget(mTarget);
          return retargeted;
      }
  
      @Override
      public void process(FilterContext context) {
          // Get input frame
          Frame input = pullInput("frame");
  
          // Create output frame
          Frame output = context.getFrameManager().duplicateFrameToTarget(input, mTarget);
  
          // Push output
          pushOutput("frame", output);
  
          // Release pushed frame
          output.release();
      }
  
  }
  