1/*
2 * Copyright (C) 2011 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
18package android.filterpacks.base;
19
20import android.filterfw.core.Filter;
21import android.filterfw.core.FilterContext;
22import android.filterfw.core.Frame;
23import android.filterfw.core.FrameFormat;
24import android.filterfw.core.GenerateFinalPort;
25import android.filterfw.core.MutableFrameFormat;
26
27/**
28 * @hide
29 */
30public class RetargetFilter extends Filter {
31
32    @GenerateFinalPort(name = "target", hasDefault = false)
33    private String mTargetString;
34
35    private MutableFrameFormat mOutputFormat;
36    private int mTarget = -1;
37
38    public RetargetFilter(String name) {
39        super(name);
40    }
41
42    @Override
43    public void setupPorts() {
44        // Setup target
45        mTarget = FrameFormat.readTargetString(mTargetString);
46
47        // Add ports
48        addInputPort("frame");
49        addOutputBasedOnInput("frame", "frame");
50    }
51
52    @Override
53    public FrameFormat getOutputFormat(String portName, FrameFormat inputFormat) {
54        MutableFrameFormat retargeted = inputFormat.mutableCopy();
55        retargeted.setTarget(mTarget);
56        return retargeted;
57    }
58
59    @Override
60    public void process(FilterContext context) {
61        // Get input frame
62        Frame input = pullInput("frame");
63
64        // Create output frame
65        Frame output = context.getFrameManager().duplicateFrameToTarget(input, mTarget);
66
67        // Push output
68        pushOutput("frame", output);
69
70        // Release pushed frame
71        output.release();
72    }
73
74}
75