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
17package androidx.media.filterfw.samples.simplecamera;
18
19import android.util.Log;
20import androidx.media.filterfw.Filter;
21import androidx.media.filterfw.FrameBuffer2D;
22import androidx.media.filterfw.FrameImage2D;
23import androidx.media.filterfw.FrameType;
24import androidx.media.filterfw.FrameValue;
25import androidx.media.filterfw.MffContext;
26import androidx.media.filterfw.OutputPort;
27import androidx.media.filterfw.Signature;
28
29
30public 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