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.GenerateFieldPort;
25
26import java.io.OutputStream;
27import java.io.IOException;
28import java.nio.ByteBuffer;
29
30/**
31 * @hide
32 */
33public class OutputStreamTarget extends Filter {
34
35    @GenerateFieldPort(name = "stream")
36    private OutputStream mOutputStream;
37
38    public OutputStreamTarget(String name) {
39        super(name);
40    }
41
42    @Override
43    public void setupPorts() {
44        addInputPort("data");
45    }
46
47    @Override
48    public void process(FilterContext context) {
49        Frame input = pullInput("data");
50        ByteBuffer data;
51
52        if (input.getFormat().getObjectClass() == String.class) {
53            String stringVal = (String)input.getObjectValue();
54            data = ByteBuffer.wrap(stringVal.getBytes());
55        } else {
56            data = input.getData();
57        }
58        try {
59            mOutputStream.write(data.array(), 0, data.limit());
60            mOutputStream.flush();
61        } catch (IOException exception) {
62            throw new RuntimeException(
63                "OutputStreamTarget: Could not write to stream: " + exception.getMessage() + "!");
64        }
65    }
66}
67