aviocat: Support avio options
[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] [-oi <options>] [-oo <options>] input_url output_url\n", argv0);
30 fprintf(stderr, "<options>: AVOptions expressed as key=value, :-separated\n");
31 return ret;
32 }
33
34 int main(int argc, char **argv)
35 {
36 int bps = 0, duration = 0, ret, i;
37 const char *input_url = NULL, *output_url = NULL;
38 int64_t stream_pos = 0;
39 int64_t start_time;
40 char errbuf[50];
41 AVIOContext *input, *output;
42 AVDictionary *in_opts = NULL;
43 AVDictionary *out_opts = NULL;
44
45 av_register_all();
46 avformat_network_init();
47
48 for (i = 1; i < argc; i++) {
49 if (!strcmp(argv[i], "-b") && i + 1 < argc) {
50 bps = atoi(argv[i + 1]);
51 i++;
52 } else if (!strcmp(argv[i], "-d") && i + 1 < argc) {
53 duration = atoi(argv[i + 1]);
54 i++;
55 } else if (!strcmp(argv[i], "-oi") && i + 1 < argc) {
56 if (av_dict_parse_string(&in_opts, argv[i + 1], "=", ":", 0) < 0) {
57 fprintf(stderr, "Cannot parse option string %s\n",
58 argv[i + 1]);
59 return usage(argv[0], 1);
60 }
61 i++;
62 } else if (!strcmp(argv[i], "-oo") && i + 1 < argc) {
63 if (av_dict_parse_string(&out_opts, argv[i + 1], "=", ":", 0) < 0) {
64 fprintf(stderr, "Cannot parse option string %s\n",
65 argv[i + 1]);
66 return usage(argv[0], 1);
67 }
68 i++;
69 } else if (!input_url) {
70 input_url = argv[i];
71 } else if (!output_url) {
72 output_url = argv[i];
73 } else {
74 return usage(argv[0], 1);
75 }
76 }
77 if (!output_url)
78 return usage(argv[0], 1);
79
80 ret = avio_open2(&input, input_url, AVIO_FLAG_READ, NULL, &in_opts);
81 if (ret) {
82 av_strerror(ret, errbuf, sizeof(errbuf));
83 fprintf(stderr, "Unable to open %s: %s\n", input_url, errbuf);
84 return 1;
85 }
86 if (duration && !bps) {
87 int64_t size = avio_size(input);
88 if (size < 0) {
89 av_strerror(ret, errbuf, sizeof(errbuf));
90 fprintf(stderr, "Unable to get size of %s: %s\n", input_url, errbuf);
91 goto fail;
92 }
93 bps = size / duration;
94 }
95 ret = avio_open2(&output, output_url, AVIO_FLAG_WRITE, NULL, &out_opts);
96 if (ret) {
97 av_strerror(ret, errbuf, sizeof(errbuf));
98 fprintf(stderr, "Unable to open %s: %s\n", output_url, errbuf);
99 goto fail;
100 }
101
102 start_time = av_gettime_relative();
103 while (1) {
104 uint8_t buf[1024];
105 int n;
106 n = avio_read(input, buf, sizeof(buf));
107 if (n <= 0)
108 break;
109 avio_write(output, buf, n);
110 stream_pos += n;
111 if (bps) {
112 avio_flush(output);
113 while ((av_gettime_relative() - start_time) * bps / AV_TIME_BASE < stream_pos)
114 av_usleep(50 * 1000);
115 }
116 }
117
118 avio_flush(output);
119 avio_close(output);
120
121 fail:
122 av_dict_free(&in_opts);
123 av_dict_free(&out_opts);
124 avio_close(input);
125 avformat_network_deinit();
126 return ret ? 1 : 0;
127 }