/*
  * MicroDVD subtitle muxer
  * Copyright (c) 2010  Aurelien Jacobs <aurel@gnuage.org>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 

 #include <inttypes.h>

 #include "avformat.h"

 #include "internal.h"

 
 static int microdvd_write_header(struct AVFormatContext *s)
 {

     AVCodecParameters *par = s->streams[0]->codecpar;
     AVRational framerate = s->streams[0]->avg_frame_rate;

     if (s->nb_streams != 1 || par->codec_id != AV_CODEC_ID_MICRODVD) {

         av_log(s, AV_LOG_ERROR, "Exactly one MicroDVD stream is needed.\n");
         return -1;
     }
 

     if (par->extradata && par->extradata_size > 0) {

         avio_write(s->pb, "{DEFAULT}{}", 11);

         avio_write(s->pb, par->extradata, par->extradata_size);

         avio_flush(s->pb);
     }

     avpriv_set_pts_info(s->streams[0], 64, framerate.num, framerate.den);

     return 0;
 }
 
 static int microdvd_write_packet(AVFormatContext *avf, AVPacket *pkt)
 {
     avio_printf(avf->pb, "{%"PRId64"}", pkt->pts);
     if (pkt->duration < 0)
         avio_write(avf->pb, "{}", 2);
     else
         avio_printf(avf->pb, "{%"PRId64"}", pkt->pts + pkt->duration);
     avio_write(avf->pb, pkt->data, pkt->size);
     avio_write(avf->pb, "\n", 1);

     return 0;
 }
 
 AVOutputFormat ff_microdvd_muxer = {
     .name           = "microdvd",
     .long_name      = NULL_IF_CONFIG_SMALL("MicroDVD subtitle format"),
     .mime_type      = "text/x-microdvd",
     .extensions     = "sub",
     .write_header   = microdvd_write_header,

     .write_packet   = microdvd_write_packet,

     .flags          = AVFMT_NOTIMESTAMPS,

     .subtitle_codec = AV_CODEC_ID_MICRODVD,

 };