1 /*
2  * Copyright (C) 2015 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 #include <new>
18 #include <memory>
19 #include <fstream>
20 #include <iostream>
21 #include <fec/io.h>
22 
23 using namespace std;
24 const unsigned bufsize = 2 * 1024 * FEC_BLOCKSIZE;
25 
main(int argc,char ** argv)26 int main(int argc, char **argv)
27 {
28     if (argc != 3) {
29         cerr << "usage: " << argv[0] << " input output" << endl;
30         return 1;
31     }
32 
33     unique_ptr<uint8_t[]> buffer(new (nothrow) uint8_t[bufsize]);
34 
35     if (!buffer) {
36         cerr << "failed to allocate buffer" << endl;
37         return 1;
38     }
39 
40     fec::io input(argv[1]);
41 
42     if (!input) {
43         return 1;
44     }
45 
46     ofstream output(argv[2], ios::binary | ios::trunc);
47 
48     if (!output) {
49         cerr << "failed to open " << argv[2] << endl;
50         return 1;
51     }
52 
53     ssize_t count;
54 
55     do {
56         count = input.read(buffer.get(), bufsize);
57 
58         if (count == -1) {
59             return 1;
60         } else if (count > 0) {
61             output.write(reinterpret_cast<const char *>(buffer.get()), count);
62 
63             if (!output) {
64                 cerr << "write" << endl;
65                 return 1;
66             }
67         }
68     } while (count > 0);
69 
70     return 0;
71 }
72