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77 lines
2.6 KiB
77 lines
2.6 KiB
/* |
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* Copyright (c) 2012 Clément Bœsch |
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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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#ifndef AVFORMAT_SUBTITLES_H |
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#define AVFORMAT_SUBTITLES_H |
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#include <stdint.h> |
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#include "avformat.h" |
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#include "libavutil/bprint.h" |
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typedef struct { |
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AVPacket *subs; ///< array of subtitles packets |
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int nb_subs; ///< number of subtitles packets |
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int allocated_size; ///< allocated size for subs |
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int current_sub_idx; ///< current position for the read packet callback |
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} FFDemuxSubtitlesQueue; |
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/** |
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* Insert a new subtitle event. |
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* |
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* @param event the subtitle line, may not be zero terminated |
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* @param len the length of the event (in strlen() sense, so without '\0') |
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* @param merge set to 1 if the current event should be concatenated with the |
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* previous one instead of adding a new entry, 0 otherwise |
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*/ |
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AVPacket *ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q, |
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const uint8_t *event, int len, int merge); |
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/** |
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* Set missing durations and sort subtitles by PTS, and then byte position. |
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*/ |
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void ff_subtitles_queue_finalize(FFDemuxSubtitlesQueue *q); |
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/** |
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* Generic read_packet() callback for subtitles demuxers using this queue |
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* system. |
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*/ |
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int ff_subtitles_queue_read_packet(FFDemuxSubtitlesQueue *q, AVPacket *pkt); |
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/** |
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* Remove and destroy all the subtitles packets. |
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*/ |
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void ff_subtitles_queue_clean(FFDemuxSubtitlesQueue *q); |
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/** |
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* SMIL helper to load next chunk ("<...>" or untagged content) in buf. |
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* |
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* @param c cached character, to avoid a backward seek |
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*/ |
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int ff_smil_extract_next_chunk(AVIOContext *pb, AVBPrint *buf, char *c); |
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/** |
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* SMIL helper to point on the value of an attribute in the given tag. |
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* |
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* @param s SMIL tag ("<...>") |
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* @param attr the attribute to look for |
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*/ |
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const char *ff_smil_get_attr_ptr(const char *s, const char *attr); |
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#endif /* AVFORMAT_SUBTITLES_H */
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