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 * SubViewer v1 subtitle demuxer
28 #include "subtitles.h"
31 FFDemuxSubtitlesQueue q
;
34 static int subviewer1_probe(AVProbeData
*p
)
36 const unsigned char *ptr
= p
->buf
;
38 if (strstr(ptr
, "******** START SCRIPT ********"))
39 return AVPROBE_SCORE_EXTENSION
;
43 static int subviewer1_read_header(AVFormatContext
*s
)
47 SubViewer1Context
*subviewer1
= s
->priv_data
;
48 AVStream
*st
= avformat_new_stream(s
, NULL
);
51 return AVERROR(ENOMEM
);
52 avpriv_set_pts_info(st
, 64, 1, 1);
53 st
->codec
->codec_type
= AVMEDIA_TYPE_SUBTITLE
;
54 st
->codec
->codec_id
= AV_CODEC_ID_SUBVIEWER1
;
56 while (!avio_feof(s
->pb
)) {
58 int len
= ff_get_line(s
->pb
, line
, sizeof(line
));
64 if (!strncmp(line
, "[DELAY]", 7)) {
65 ff_get_line(s
->pb
, line
, sizeof(line
));
66 sscanf(line
, "%d", &delay
);
69 if (sscanf(line
, "[%d:%d:%d]", &hh
, &mm
, &ss
) == 3) {
70 const int64_t pos
= avio_tell(s
->pb
);
71 int64_t pts_start
= hh
*3600LL + mm
*60LL + ss
+ delay
;
73 len
= ff_get_line(s
->pb
, line
, sizeof(line
));
74 line
[strcspn(line
, "\r\n")] = 0;
77 sub
->duration
= pts_start
- sub
->pts
;
79 sub
= ff_subtitles_queue_insert(&subviewer1
->q
, line
, len
, 0);
81 return AVERROR(ENOMEM
);
89 ff_subtitles_queue_finalize(&subviewer1
->q
);
93 static int subviewer1_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
95 SubViewer1Context
*subviewer1
= s
->priv_data
;
96 return ff_subtitles_queue_read_packet(&subviewer1
->q
, pkt
);
99 static int subviewer1_read_seek(AVFormatContext
*s
, int stream_index
,
100 int64_t min_ts
, int64_t ts
, int64_t max_ts
, int flags
)
102 SubViewer1Context
*subviewer1
= s
->priv_data
;
103 return ff_subtitles_queue_seek(&subviewer1
->q
, s
, stream_index
,
104 min_ts
, ts
, max_ts
, flags
);
107 static int subviewer1_read_close(AVFormatContext
*s
)
109 SubViewer1Context
*subviewer1
= s
->priv_data
;
110 ff_subtitles_queue_clean(&subviewer1
->q
);
114 AVInputFormat ff_subviewer1_demuxer
= {
115 .name
= "subviewer1",
116 .long_name
= NULL_IF_CONFIG_SMALL("SubViewer v1 subtitle format"),
117 .priv_data_size
= sizeof(SubViewer1Context
),
118 .read_probe
= subviewer1_probe
,
119 .read_header
= subviewer1_read_header
,
120 .read_packet
= subviewer1_read_packet
,
121 .read_seek2
= subviewer1_read_seek
,
122 .read_close
= subviewer1_read_close
,