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
25 static int microdvd_write_header(struct AVFormatContext *s)
27 AVCodecContext *avctx = s->streams[0]->codec;
29 if (s->nb_streams != 1 || avctx->codec_id != AV_CODEC_ID_MICRODVD) {
30 av_log(s, AV_LOG_ERROR, "Exactly one MicroDVD stream is needed.\n");
34 if (avctx->extradata && avctx->extradata_size > 0) {
35 avio_write(s->pb, "{DEFAULT}{}", 11);
36 avio_write(s->pb, avctx->extradata, avctx->extradata_size);
42 AVOutputFormat ff_microdvd_muxer = {
44 .long_name = NULL_IF_CONFIG_SMALL("MicroDVD subtitle format"),
45 .mime_type = "text/x-microdvd",
47 .write_header = microdvd_write_header,
48 .write_packet = ff_raw_write_packet,
49 .flags = AVFMT_NOTIMESTAMPS,
50 .subtitle_codec = AV_CODEC_ID_MICRODVD,