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