1 /*
2 * Copyright (c) 2012 Martin Storsjo
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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
usage(const char * argv0,int ret)27 static int usage(const char *argv0, int ret)
28 {
29 fprintf(stderr, "%s [-b bytespersec] [-d duration] [-oi <options>] [-oo <options>] [-v] input_url output_url\n", argv0);
30 fprintf(stderr, "<options>: AVOptions expressed as key=value, :-separated\n");
31 return ret;
32 }
33
main(int argc,char ** argv)34 int main(int argc, char **argv)
35 {
36 int bps = 0, duration = 0, verbose = 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 avformat_network_init();
46
47 for (i = 1; i < argc; i++) {
48 if (!strcmp(argv[i], "-b") && i + 1 < argc) {
49 bps = atoi(argv[i + 1]);
50 i++;
51 } else if (!strcmp(argv[i], "-d") && i + 1 < argc) {
52 duration = atoi(argv[i + 1]);
53 i++;
54 } else if (!strcmp(argv[i], "-oi") && i + 1 < argc) {
55 if (av_dict_parse_string(&in_opts, argv[i + 1], "=", ":", 0) < 0) {
56 fprintf(stderr, "Cannot parse option string %s\n",
57 argv[i + 1]);
58 return usage(argv[0], 1);
59 }
60 i++;
61 } else if (!strcmp(argv[i], "-oo") && i + 1 < argc) {
62 if (av_dict_parse_string(&out_opts, argv[i + 1], "=", ":", 0) < 0) {
63 fprintf(stderr, "Cannot parse option string %s\n",
64 argv[i + 1]);
65 return usage(argv[0], 1);
66 }
67 i++;
68 } else if (!strcmp(argv[i], "-v")) {
69 verbose = 1;
70 } else if (!input_url) {
71 input_url = argv[i];
72 } else if (!output_url) {
73 output_url = argv[i];
74 } else {
75 return usage(argv[0], 1);
76 }
77 }
78 if (!output_url)
79 return usage(argv[0], 1);
80
81 ret = avio_open2(&input, input_url, AVIO_FLAG_READ, NULL, &in_opts);
82 if (ret) {
83 av_strerror(ret, errbuf, sizeof(errbuf));
84 fprintf(stderr, "Unable to open %s: %s\n", input_url, errbuf);
85 return 1;
86 }
87 if (verbose) {
88 int64_t size = avio_seek(input, 0, AVSEEK_SIZE);
89 if (size >= 0) {
90 fprintf(stderr, "aviocat: input size: %"PRId64"\n", size);
91 } else {
92 fprintf(stderr, "aviocat: input size: unknown\n");
93 }
94 }
95 if (duration && !bps) {
96 int64_t size = avio_size(input);
97 if (size < 0) {
98 av_strerror(ret, errbuf, sizeof(errbuf));
99 fprintf(stderr, "Unable to get size of %s: %s\n", input_url, errbuf);
100 goto fail;
101 }
102 bps = size / duration;
103 }
104 ret = avio_open2(&output, output_url, AVIO_FLAG_WRITE, NULL, &out_opts);
105 if (ret) {
106 av_strerror(ret, errbuf, sizeof(errbuf));
107 fprintf(stderr, "Unable to open %s: %s\n", output_url, errbuf);
108 goto fail;
109 }
110
111 start_time = av_gettime_relative();
112 while (1) {
113 uint8_t buf[1024];
114 int n;
115 n = avio_read(input, buf, sizeof(buf));
116 if (n <= 0)
117 break;
118 avio_write(output, buf, n);
119 if (output->error) {
120 av_strerror(output->error, errbuf, sizeof(errbuf));
121 fprintf(stderr, "Unable to write %s: %s\n", output_url, errbuf);
122 break;
123 }
124 stream_pos += n;
125 if (bps) {
126 avio_flush(output);
127 while ((av_gettime_relative() - start_time) * bps / AV_TIME_BASE < stream_pos)
128 av_usleep(50 * 1000);
129 }
130 }
131
132 avio_flush(output);
133 avio_close(output);
134
135 fail:
136 av_dict_free(&in_opts);
137 av_dict_free(&out_opts);
138 avio_close(input);
139 avformat_network_deinit();
140 return ret ? 1 : 0;
141 }
142