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      1 /*
      2  * Copyright 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package androidx.media.filterfw.samples.simplecamera;
     18 
     19 import android.util.Log;
     20 import androidx.media.filterfw.Filter;
     21 import androidx.media.filterfw.FrameBuffer2D;
     22 import androidx.media.filterfw.FrameImage2D;
     23 import androidx.media.filterfw.FrameType;
     24 import androidx.media.filterfw.FrameValue;
     25 import androidx.media.filterfw.MffContext;
     26 import androidx.media.filterfw.OutputPort;
     27 import androidx.media.filterfw.Signature;
     28 
     29 
     30 public class IfElseFilter extends Filter {
     31 
     32     private static final String TAG = "IfElseFilter";
     33     private static boolean mLogVerbose = Log.isLoggable(TAG, Log.VERBOSE);
     34 
     35     public IfElseFilter(MffContext context, String name) {
     36         super(context, name);
     37     }
     38 
     39     @Override
     40     public Signature getSignature() {
     41         FrameType imageIn = FrameType.image2D(FrameType.ELEMENT_RGBA8888, FrameType.READ_GPU);
     42         FrameType videoIn = FrameType.image2D(FrameType.ELEMENT_RGBA8888, FrameType.READ_GPU);
     43         FrameType imageOut = FrameType.image2D(FrameType.ELEMENT_RGBA8888, FrameType.WRITE_GPU);
     44 
     45         return new Signature().addInputPort("falseResult", Signature.PORT_REQUIRED, imageIn)
     46                 .addInputPort("trueResult", Signature.PORT_REQUIRED, videoIn)
     47                 .addInputPort("condition", Signature.PORT_REQUIRED, FrameType.single(boolean.class))
     48                 .addOutputPort("output", Signature.PORT_REQUIRED, imageOut)
     49                 .disallowOtherPorts();
     50     }
     51 
     52     @Override
     53     protected void onProcess() {
     54         OutputPort outPort = getConnectedOutputPort("output");
     55         FrameImage2D trueFrame = getConnectedInputPort("trueResult").pullFrame().asFrameImage2D();
     56         FrameImage2D falseFrame = getConnectedInputPort("falseResult").pullFrame().asFrameImage2D();
     57         FrameValue boolFrameValue = getConnectedInputPort("condition").pullFrame().asFrameValue();
     58         boolean condition = (Boolean) boolFrameValue.getValue();
     59         FrameBuffer2D outputFrame;
     60         // If the condition is true, then we want to use the camera, else use the gallery
     61         if (condition) {
     62             outputFrame = trueFrame;
     63         } else {
     64             outputFrame = falseFrame;
     65         }
     66         outPort.pushFrame(outputFrame);
     67 
     68     }
     69 
     70 }
     71