1 /*
2 * Copyright (c) 2013 Nicolas George
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 License
8 * 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
14 * GNU Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public License
17 * along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "config.h"
22 #if HAVE_UNISTD_H
23 #include <unistd.h> /* getopt */
24 #endif
25
26 #include "libavformat/avformat.h"
27 #include "libavutil/timestamp.h"
28
29 #if !HAVE_GETOPT
30 #include "compat/getopt.c"
31 #endif
32
usage(int ret)33 static void usage(int ret)
34 {
35 fprintf(ret ? stderr : stdout,
36 "Usage: seek_print file [command ...]\n"
37 "Commands:\n"
38 " read\n"
39 " seek:stream:min_ts:ts:max_ts:flags\n"
40 );
41 exit(ret);
42 }
43
main(int argc,char ** argv)44 int main(int argc, char **argv)
45 {
46 int opt, ret, stream, flags;
47 const char *filename;
48 AVFormatContext *avf = NULL;
49 int64_t min_ts, max_ts, ts;
50 AVPacket packet;
51
52 while ((opt = getopt(argc, argv, "h")) != -1) {
53 switch (opt) {
54 case 'h':
55 usage(0);
56 default:
57 usage(1);
58 }
59 }
60 argc -= optind;
61 argv += optind;
62 if (!argc)
63 usage(1);
64 filename = *argv;
65 argv++;
66 argc--;
67
68 if ((ret = avformat_open_input(&avf, filename, NULL, NULL)) < 0) {
69 fprintf(stderr, "%s: %s\n", filename, av_err2str(ret));
70 return 1;
71 }
72 if ((ret = avformat_find_stream_info(avf, NULL)) < 0) {
73 fprintf(stderr, "%s: could not find codec parameters: %s\n", filename,
74 av_err2str(ret));
75 return 1;
76 }
77
78 for (; argc; argc--, argv++) {
79 if (!strcmp(*argv, "read")) {
80 ret = av_read_frame(avf, &packet);
81 if (ret < 0) {
82 printf("read: %d (%s)\n", ret, av_err2str(ret));
83 } else {
84 AVRational *tb = &avf->streams[packet.stream_index]->time_base;
85 printf("read: %d size=%d stream=%d dts=%s (%s) pts=%s (%s)\n",
86 ret, packet.size, packet.stream_index,
87 av_ts2str(packet.dts), av_ts2timestr(packet.dts, tb),
88 av_ts2str(packet.pts), av_ts2timestr(packet.pts, tb));
89 av_packet_unref(&packet);
90 }
91 } else if (sscanf(*argv, "seek:%i:%"SCNi64":%"SCNi64":%"SCNi64":%i",
92 &stream, &min_ts, &ts, &max_ts, &flags) == 5) {
93 ret = avformat_seek_file(avf, stream, min_ts, ts, max_ts, flags);
94 printf("seek: %d (%s)\n", ret, av_err2str(ret));
95 } else {
96 fprintf(stderr, "'%s': unknown command\n", *argv);
97 return 1;
98 }
99 }
100
101 avformat_close_input(&avf);
102
103 return 0;
104 }
105