2 * MicroDVD subtitle muxer
3 * Copyright (c) 2010 Aurelien Jacobs <aurel@gnuage.org>
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 static int microdvd_write_header(struct AVFormatContext
*s
)
28 AVCodecContext
*avctx
= s
->streams
[0]->codec
;
29 AVRational tb
= avctx
->time_base
;
31 if (s
->nb_streams
!= 1 || avctx
->codec_id
!= AV_CODEC_ID_MICRODVD
) {
32 av_log(s
, AV_LOG_ERROR
, "Exactly one MicroDVD stream is needed.\n");
36 if (avctx
->extradata
&& avctx
->extradata_size
> 0) {
37 avio_write(s
->pb
, "{DEFAULT}{}", 11);
38 avio_write(s
->pb
, avctx
->extradata
, avctx
->extradata_size
);
42 avpriv_set_pts_info(s
->streams
[0], 64, tb
.num
, tb
.den
);
46 static int microdvd_write_packet(AVFormatContext
*avf
, AVPacket
*pkt
)
48 avio_printf(avf
->pb
, "{%"PRId64
"}", pkt
->pts
);
49 if (pkt
->duration
< 0)
50 avio_write(avf
->pb
, "{}", 2);
52 avio_printf(avf
->pb
, "{%"PRId64
"}", pkt
->pts
+ pkt
->duration
);
53 avio_write(avf
->pb
, pkt
->data
, pkt
->size
);
54 avio_write(avf
->pb
, "\n", 1);
58 AVOutputFormat ff_microdvd_muxer
= {
60 .long_name
= NULL_IF_CONFIG_SMALL("MicroDVD subtitle format"),
61 .mime_type
= "text/x-microdvd",
63 .write_header
= microdvd_write_header
,
64 .write_packet
= microdvd_write_packet
,
65 .flags
= AVFMT_NOTIMESTAMPS
,
66 .subtitle_codec
= AV_CODEC_ID_MICRODVD
,