| /* |
| * 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, |
| }; |