3 * Copyright (c) 2010 Anton Khirnov
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/dict.h"
29 static void write_escape_str(AVIOContext
*s
, const uint8_t *str
)
31 const uint8_t *p
= str
;
34 if (*p
== '#' || *p
== ';' || *p
== '=' || *p
== '\\' || *p
== '\n')
41 static void write_tags(AVIOContext
*s
, AVDictionary
*m
)
43 AVDictionaryEntry
*t
= NULL
;
44 while ((t
= av_dict_get(m
, "", t
, AV_DICT_IGNORE_SUFFIX
))) {
45 write_escape_str(s
, t
->key
);
47 write_escape_str(s
, t
->value
);
52 static int write_header(AVFormatContext
*s
)
54 avio_write(s
->pb
, ID_STRING
, sizeof(ID_STRING
) - 1);
55 avio_w8(s
->pb
, '1'); // version
61 static int write_trailer(AVFormatContext
*s
)
65 write_tags(s
->pb
, s
->metadata
);
67 for (i
= 0; i
< s
->nb_streams
; i
++) {
68 avio_write(s
->pb
, ID_STREAM
, sizeof(ID_STREAM
) - 1);
70 write_tags(s
->pb
, s
->streams
[i
]->metadata
);
73 for (i
= 0; i
< s
->nb_chapters
; i
++) {
74 AVChapter
*ch
= s
->chapters
[i
];
75 avio_write(s
->pb
, ID_CHAPTER
, sizeof(ID_CHAPTER
) - 1);
77 avio_printf(s
->pb
, "TIMEBASE=%d/%d\n", ch
->time_base
.num
, ch
->time_base
.den
);
78 avio_printf(s
->pb
, "START=%"PRId64
"\n", ch
->start
);
79 avio_printf(s
->pb
, "END=%"PRId64
"\n", ch
->end
);
80 write_tags(s
->pb
, ch
->metadata
);
86 static int write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
91 AVOutputFormat ff_ffmetadata_muxer
= {
93 .long_name
= NULL_IF_CONFIG_SMALL("FFmpeg metadata in text"),
94 .extensions
= "ffmeta",
95 .write_header
= write_header
,
96 .write_packet
= write_packet
,
97 .write_trailer
= write_trailer
,
98 .flags
= AVFMT_NOTIMESTAMPS
| AVFMT_NOSTREAMS
,