xref: /third_party/ffmpeg/tools/seek_print.c (revision cabdff1a) 
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
33static 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
44int 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