2 * Copyright (c) 2003 Fabrice Bellard
3 * Copyright (c) 2007 Michael Niedermayer
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/common.h"
28 #include "libavutil/mathematics.h"
30 #include "libavformat/avformat.h"
32 static char buffer
[20];
34 static const char *ret_str(int v
)
37 case AVERROR_EOF
: return "-EOF";
38 case AVERROR(EIO
): return "-EIO";
39 case AVERROR(ENOMEM
): return "-ENOMEM";
40 case AVERROR(EINVAL
): return "-EINVAL";
42 snprintf(buffer
, sizeof(buffer
), "%2d", v
);
47 static void ts_str(char buffer
[60], int64_t ts
, AVRational base
)
50 if (ts
== AV_NOPTS_VALUE
) {
51 strcpy(buffer
, " NOPTS ");
54 tsval
= ts
* av_q2d(base
);
55 snprintf(buffer
, 60, "%9f", tsval
);
58 int main(int argc
, char **argv
)
61 AVFormatContext
*ic
= NULL
;
62 int i
, ret
, stream_id
;
64 AVDictionary
*format_opts
= NULL
;
66 av_dict_set(&format_opts
, "channels", "1", 0);
67 av_dict_set(&format_opts
, "sample_rate", "22050", 0);
69 /* initialize libavcodec, and register all codecs and formats */
73 printf("usage: %s input_file\n"
80 ret
= avformat_open_input(&ic
, filename
, NULL
, &format_opts
);
81 av_dict_free(&format_opts
);
83 fprintf(stderr
, "cannot open %s\n", filename
);
87 ret
= avformat_find_stream_info(ic
, NULL
);
89 fprintf(stderr
, "%s: could not find codec parameters\n", filename
);
95 AVStream
*av_uninit(st
);
99 ret
= av_read_frame(ic
, &pkt
);
102 st
= ic
->streams
[pkt
.stream_index
];
103 ts_str(dts_buf
, pkt
.dts
, st
->time_base
);
104 ts_str(ts_buf
, pkt
.pts
, st
->time_base
);
105 printf("ret:%-10s st:%2d flags:%d dts:%s pts:%s pos:%7" PRId64
" size:%6d", ret_str(ret
), pkt
.stream_index
, pkt
.flags
, dts_buf
, ts_buf
, pkt
.pos
, pkt
.size
);
106 av_packet_unref(&pkt
);
108 printf("ret:%s", ret_str(ret
)); // necessary to avoid trailing whitespace
114 stream_id
= (i
>>1)%(ic
->nb_streams
+1) - 1;
115 timestamp
= (i
*19362894167LL) % (4*AV_TIME_BASE
) - AV_TIME_BASE
;
117 st
= ic
->streams
[stream_id
];
118 timestamp
= av_rescale_q(timestamp
, AV_TIME_BASE_Q
, st
->time_base
);
120 //FIXME fully test the new seek API
121 if(i
&1) ret
= avformat_seek_file(ic
, stream_id
, INT64_MIN
, timestamp
, timestamp
, 0);
122 else ret
= avformat_seek_file(ic
, stream_id
, timestamp
, timestamp
, INT64_MAX
, 0);
123 ts_str(ts_buf
, timestamp
, stream_id
< 0 ? AV_TIME_BASE_Q
: st
->time_base
);
124 printf("ret:%-10s st:%2d flags:%d ts:%s\n", ret_str(ret
), stream_id
, i
&1, ts_buf
);
127 avformat_close_input(&ic
);