From 7c9f9685ae2d45d5bbb939483a01266622e8f14c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Cl=C3=A9ment=20B=C5=93sch?= Date: Fri, 22 Jun 2012 21:56:30 +0200 Subject: lavf: add internal demuxer helpers for subtitles. --- libavformat/subtitles.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 libavformat/subtitles.h (limited to 'libavformat/subtitles.h') diff --git a/libavformat/subtitles.h b/libavformat/subtitles.h new file mode 100644 index 0000000000..8a75161d5e --- /dev/null +++ b/libavformat/subtitles.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2012 Clément Bœsch + * + * 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 + */ + +#ifndef AVFORMAT_SUBTITLES_H +#define AVFORMAT_SUBTITLES_H + +#include +#include "avformat.h" + +typedef struct { + AVPacket *subs; ///< array of subtitles packets + int nb_subs; ///< number of subtitles packets + int allocated_size; ///< allocated size for subs + int current_sub_idx; ///< current position for the read packet callback +} FFDemuxSubtitlesQueue; + +/** + * Insert a new subtitle event. + * + * @param event the subtitle line, may not be zero terminated + * @param len the length of the event (in strlen() sense, so without '\0') + * @param merge set to 1 if the current event should be concatenated with the + * previous one instead of adding a new entry, 0 otherwise + */ +AVPacket *ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q, + const uint8_t *event, int len, int merge); + +/** + * Set missing durations and sort subtitles by PTS, and then byte position. + */ +void ff_subtitles_queue_finalize(FFDemuxSubtitlesQueue *q); + +/** + * Generic read_packet() callback for subtitles demuxers using this queue + * system. + */ +int ff_subtitles_queue_read_packet(FFDemuxSubtitlesQueue *q, AVPacket *pkt); + +/** + * Remove and destroy all the subtitles packets. + */ +void ff_subtitles_queue_clean(FFDemuxSubtitlesQueue *q); + +#endif /* AVFORMAT_SUBTITLES_H */ -- cgit v1.2.3