2 * Copyright (c) 2012 Clément Bœsch
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * PJS (Phoenix Japanimation Society) subtitles format demuxer
25 * @see http://subs.com.ru/page.php?al=pjs
30 #include "subtitles.h"
33 FFDemuxSubtitlesQueue q
;
36 static int pjs_probe(AVProbeData
*p
)
40 const unsigned char *ptr
= p
->buf
;
42 if (sscanf(ptr
, "%"SCNd64
",%"SCNd64
",%c", &start
, &end
, &c
) == 3) {
43 size_t q1pos
= strcspn(ptr
, "\"");
44 size_t q2pos
= q1pos
+ strcspn(ptr
+ q1pos
+ 1, "\"") + 1;
45 if (strcspn(ptr
, "\r\n") > q2pos
)
46 return AVPROBE_SCORE_MAX
;
51 static int64_t read_ts(char **line
, int *duration
)
55 if (sscanf(*line
, "%"SCNd64
",%"SCNd64
, &start
, &end
) == 2) {
56 *line
+= strcspn(*line
, "\"");
58 *duration
= end
- start
;
61 return AV_NOPTS_VALUE
;
64 static int pjs_read_header(AVFormatContext
*s
)
66 PJSContext
*pjs
= s
->priv_data
;
67 AVStream
*st
= avformat_new_stream(s
, NULL
);
71 return AVERROR(ENOMEM
);
72 avpriv_set_pts_info(st
, 64, 1, 10);
73 st
->codec
->codec_type
= AVMEDIA_TYPE_SUBTITLE
;
74 st
->codec
->codec_id
= AV_CODEC_ID_PJS
;
76 while (!avio_feof(s
->pb
)) {
79 const int64_t pos
= avio_tell(s
->pb
);
80 int len
= ff_get_line(s
->pb
, line
, sizeof(line
));
87 line
[strcspn(line
, "\r\n")] = 0;
89 pts_start
= read_ts(&p
, &duration
);
90 if (pts_start
!= AV_NOPTS_VALUE
) {
93 p
[strcspn(p
, "\"")] = 0;
94 sub
= ff_subtitles_queue_insert(&pjs
->q
, p
, strlen(p
), 0);
96 return AVERROR(ENOMEM
);
99 sub
->duration
= duration
;
103 ff_subtitles_queue_finalize(&pjs
->q
);
107 static int pjs_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
109 PJSContext
*pjs
= s
->priv_data
;
110 return ff_subtitles_queue_read_packet(&pjs
->q
, pkt
);
113 static int pjs_read_seek(AVFormatContext
*s
, int stream_index
,
114 int64_t min_ts
, int64_t ts
, int64_t max_ts
, int flags
)
116 PJSContext
*pjs
= s
->priv_data
;
117 return ff_subtitles_queue_seek(&pjs
->q
, s
, stream_index
,
118 min_ts
, ts
, max_ts
, flags
);
121 static int pjs_read_close(AVFormatContext
*s
)
123 PJSContext
*pjs
= s
->priv_data
;
124 ff_subtitles_queue_clean(&pjs
->q
);
128 AVInputFormat ff_pjs_demuxer
= {
130 .long_name
= NULL_IF_CONFIG_SMALL("PJS (Phoenix Japanimation Society) subtitles"),
131 .priv_data_size
= sizeof(PJSContext
),
132 .read_probe
= pjs_probe
,
133 .read_header
= pjs_read_header
,
134 .read_packet
= pjs_read_packet
,
135 .read_seek2
= pjs_read_seek
,
136 .read_close
= pjs_read_close
,