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 * MPL2 subtitles format demuxer
28 #include "subtitles.h"
31 FFDemuxSubtitlesQueue q
;
34 static int mpl2_probe(AVProbeData
*p
)
39 const unsigned char *ptr
= p
->buf
;
40 const unsigned char *ptr_end
= ptr
+ p
->buf_size
;
42 for (i
= 0; i
< 2; i
++) {
43 if (sscanf(ptr
, "[%"SCNd64
"][%"SCNd64
"]%c", &start
, &end
, &c
) != 3 &&
44 sscanf(ptr
, "[%"SCNd64
"][]%c", &start
, &c
) != 2)
46 ptr
+= ff_subtitles_next_line(ptr
);
50 return AVPROBE_SCORE_MAX
;
53 static int read_ts(char **line
, int64_t *pts_start
, int *duration
)
59 if (sscanf(*line
, "[%"SCNd64
"][]%c%n",
60 pts_start
, &c
, &len
) >= 2) {
65 if (sscanf(*line
, "[%"SCNd64
"][%"SCNd64
"]%c%n",
66 pts_start
, &end
, &c
, &len
) >= 3) {
67 *duration
= end
- *pts_start
;
74 static int mpl2_read_header(AVFormatContext
*s
)
76 MPL2Context
*mpl2
= s
->priv_data
;
77 AVStream
*st
= avformat_new_stream(s
, NULL
);
81 return AVERROR(ENOMEM
);
82 avpriv_set_pts_info(st
, 64, 1, 10);
83 st
->codec
->codec_type
= AVMEDIA_TYPE_SUBTITLE
;
84 st
->codec
->codec_id
= AV_CODEC_ID_MPL2
;
86 while (!avio_feof(s
->pb
)) {
89 const int64_t pos
= avio_tell(s
->pb
);
90 int len
= ff_get_line(s
->pb
, line
, sizeof(line
));
97 line
[strcspn(line
, "\r\n")] = 0;
99 if (!read_ts(&p
, &pts_start
, &duration
)) {
102 sub
= ff_subtitles_queue_insert(&mpl2
->q
, p
, strlen(p
), 0);
104 return AVERROR(ENOMEM
);
106 sub
->pts
= pts_start
;
107 sub
->duration
= duration
;
111 ff_subtitles_queue_finalize(&mpl2
->q
);
115 static int mpl2_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
117 MPL2Context
*mpl2
= s
->priv_data
;
118 return ff_subtitles_queue_read_packet(&mpl2
->q
, pkt
);
121 static int mpl2_read_seek(AVFormatContext
*s
, int stream_index
,
122 int64_t min_ts
, int64_t ts
, int64_t max_ts
, int flags
)
124 MPL2Context
*mpl2
= s
->priv_data
;
125 return ff_subtitles_queue_seek(&mpl2
->q
, s
, stream_index
,
126 min_ts
, ts
, max_ts
, flags
);
129 static int mpl2_read_close(AVFormatContext
*s
)
131 MPL2Context
*mpl2
= s
->priv_data
;
132 ff_subtitles_queue_clean(&mpl2
->q
);
136 AVInputFormat ff_mpl2_demuxer
= {
138 .long_name
= NULL_IF_CONFIG_SMALL("MPL2 subtitles"),
139 .priv_data_size
= sizeof(MPL2Context
),
140 .read_probe
= mpl2_probe
,
141 .read_header
= mpl2_read_header
,
142 .read_packet
= mpl2_read_packet
,
143 .read_seek2
= mpl2_read_seek
,
144 .read_close
= mpl2_read_close
,
145 .extensions
= "txt,mpl2",