yading@11: /*
yading@11:  * MicroDVD subtitle muxer
yading@11:  * Copyright (c) 2010  Aurelien Jacobs <aurel@gnuage.org>
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #include <inttypes.h>
yading@11: #include "avformat.h"
yading@11: #include "internal.h"
yading@11: 
yading@11: static int microdvd_write_header(struct AVFormatContext *s)
yading@11: {
yading@11:     AVCodecContext *avctx = s->streams[0]->codec;
yading@11:     AVRational tb = avctx->time_base;
yading@11: 
yading@11:     if (s->nb_streams != 1 || avctx->codec_id != AV_CODEC_ID_MICRODVD) {
yading@11:         av_log(s, AV_LOG_ERROR, "Exactly one MicroDVD stream is needed.\n");
yading@11:         return -1;
yading@11:     }
yading@11: 
yading@11:     if (avctx->extradata && avctx->extradata_size > 0) {
yading@11:         avio_write(s->pb, "{DEFAULT}{}", 11);
yading@11:         avio_write(s->pb, avctx->extradata, avctx->extradata_size);
yading@11:         avio_flush(s->pb);
yading@11:     }
yading@11: 
yading@11:     avpriv_set_pts_info(s->streams[0], 64, tb.num, tb.den);
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int microdvd_write_packet(AVFormatContext *avf, AVPacket *pkt)
yading@11: {
yading@11:     avio_printf(avf->pb, "{%"PRId64"}", pkt->pts);
yading@11:     if (pkt->duration < 0)
yading@11:         avio_write(avf->pb, "{}", 2);
yading@11:     else
yading@11:         avio_printf(avf->pb, "{%"PRId64"}", pkt->pts + pkt->duration);
yading@11:     avio_write(avf->pb, pkt->data, pkt->size);
yading@11:     avio_write(avf->pb, "\n", 1);
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: AVOutputFormat ff_microdvd_muxer = {
yading@11:     .name           = "microdvd",
yading@11:     .long_name      = NULL_IF_CONFIG_SMALL("MicroDVD subtitle format"),
yading@11:     .mime_type      = "text/x-microdvd",
yading@11:     .extensions     = "sub",
yading@11:     .write_header   = microdvd_write_header,
yading@11:     .write_packet   = microdvd_write_packet,
yading@11:     .flags          = AVFMT_NOTIMESTAMPS,
yading@11:     .subtitle_codec = AV_CODEC_ID_MICRODVD,
yading@11: };