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 
IfElseFilter(MffContext context, String name)35     public IfElseFilter(MffContext context, String name) {
36         super(context, name);
37     }
38 
39     @Override
getSignature()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
onProcess()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