59244a8e4faecd1cecbac27c964c39bb9f311909
[libav.git] / tools / aviocat.c
1 /*
2 * Copyright (c) 2012 Martin Storsjo
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <stdio.h>
22 #include <stdlib.h>
23
24 #include "libavutil/time.h"
25 #include "libavformat/avformat.h"
26
27 static int usage(const char *argv0, int ret)
28 {
29 fprintf(stderr, "%s [-b bytespersec] [-d duration] input_url output_url\n", argv0);
30 return ret;
31 }
32
33 int main(int argc, char **argv)
34 {
35 int bps = 0, duration = 0, ret, i;
36 const char *input_url = NULL, *output_url = NULL;
37 int64_t stream_pos = 0;
38 int64_t start_time;
39 char errbuf[50];
40 AVIOContext *input, *output;
41
42 av_register_all();
43 avformat_network_init();
44
45 for (i = 1; i < argc; i++) {
46 if (!strcmp(argv[i], "-b") && i + 1 < argc) {
47 bps = atoi(argv[i + 1]);
48 i++;
49 } else if (!strcmp(argv[i], "-d") && i + 1 < argc) {
50 duration = atoi(argv[i + 1]);
51 i++;
52 } else if (!input_url) {
53 input_url = argv[i];
54 } else if (!output_url) {
55 output_url = argv[i];
56 } else {
57 return usage(argv[0], 1);
58 }
59 }
60 if (!output_url)
61 return usage(argv[0], 1);
62
63 ret = avio_open2(&input, input_url, AVIO_FLAG_READ, NULL, NULL);
64 if (ret) {
65 av_strerror(ret, errbuf, sizeof(errbuf));
66 fprintf(stderr, "Unable to open %s: %s\n", input_url, errbuf);
67 return 1;
68 }
69 if (duration && !bps) {
70 int64_t size = avio_size(input);
71 if (size < 0) {
72 av_strerror(ret, errbuf, sizeof(errbuf));
73 fprintf(stderr, "Unable to get size of %s: %s\n", input_url, errbuf);
74 goto fail;
75 }
76 bps = size / duration;
77 }
78 ret = avio_open2(&output, output_url, AVIO_FLAG_WRITE, NULL, NULL);
79 if (ret) {
80 av_strerror(ret, errbuf, sizeof(errbuf));
81 fprintf(stderr, "Unable to open %s: %s\n", output_url, errbuf);
82 goto fail;
83 }
84
85 start_time = av_gettime_relative();
86 while (1) {
87 uint8_t buf[1024];
88 int n;
89 n = avio_read(input, buf, sizeof(buf));
90 if (n <= 0)
91 break;
92 avio_write(output, buf, n);
93 stream_pos += n;
94 if (bps) {
95 avio_flush(output);
96 while ((av_gettime_relative() - start_time) * bps / AV_TIME_BASE < stream_pos)
97 av_usleep(50 * 1000);
98 }
99 }
100
101 avio_flush(output);
102 avio_close(output);
103
104 fail:
105 avio_close(input);
106 avformat_network_deinit();
107 return ret ? 1 : 0;
108 }