/* * 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_w8(s->pb, '\n'); } 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_w8(avf->pb, '\n'); 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, };