FFmpeg
Main Page
Related Pages
Modules
Namespaces
Data Structures
Files
Examples
File List
Globals
•
All
Data Structures
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Macros
Groups
Pages
libavformat
vplayerdec.c
Go to the documentation of this file.
1
/*
2
* Copyright (c) 2012 Clément Bœsch
3
*
4
* This file is part of FFmpeg.
5
*
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.
10
*
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.
15
*
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
19
*/
20
21
/**
22
* @file
23
* VPlayer subtitles format demuxer
24
*/
25
26
#include "
avformat.h
"
27
#include "
internal.h
"
28
#include "
subtitles.h
"
29
30
typedef
struct
{
31
FFDemuxSubtitlesQueue
q
;
32
}
VPlayerContext
;
33
34
static
int
vplayer_probe
(
AVProbeData
*p)
35
{
36
char
c
;
37
const
unsigned
char
*ptr = p->
buf
;
38
39
if
(sscanf(ptr,
"%*d:%*d:%*d.%*d%c"
, &c) == 1 && strchr(
": ="
, c))
40
return
AVPROBE_SCORE_MAX
;
41
return
0;
42
}
43
44
static
int64_t
read_ts
(
char
**
line
)
45
{
46
char
c
;
47
int
hh, mm, ss, ms,
len
;
48
49
if
(sscanf(*line,
"%d:%d:%d.%d%c%n"
,
50
&hh, &mm, &ss, &ms, &c, &len) >= 5) {
51
*line +=
len
;
52
return
(hh*3600LL + mm*60LL + ss) * 100LL + ms;
53
}
54
return
AV_NOPTS_VALUE
;
55
}
56
57
static
int
vplayer_read_header
(
AVFormatContext
*
s
)
58
{
59
VPlayerContext
*vplayer = s->
priv_data
;
60
AVStream
*st =
avformat_new_stream
(s,
NULL
);
61
62
if
(!st)
63
return
AVERROR
(ENOMEM);
64
avpriv_set_pts_info
(st, 64, 1, 100);
65
st->
codec
->
codec_type
=
AVMEDIA_TYPE_SUBTITLE
;
66
st->
codec
->
codec_id
=
AV_CODEC_ID_VPLAYER
;
67
68
while
(!
avio_feof
(s->
pb
)) {
69
char
line
[4096];
70
char
*p = line;
71
const
int64_t pos =
avio_tell
(s->
pb
);
72
int
len
=
ff_get_line
(s->
pb
, line,
sizeof
(line));
73
int64_t pts_start;
74
75
if
(!len)
76
break
;
77
78
line[strcspn(line,
"\r\n"
)] = 0;
79
80
pts_start =
read_ts
(&p);
81
if
(pts_start !=
AV_NOPTS_VALUE
) {
82
AVPacket
*sub;
83
84
sub =
ff_subtitles_queue_insert
(&vplayer->
q
, p, strlen(p), 0);
85
if
(!sub)
86
return
AVERROR
(ENOMEM);
87
sub->
pos
= pos;
88
sub->
pts
= pts_start;
89
sub->
duration
= -1;
90
}
91
}
92
93
ff_subtitles_queue_finalize
(&vplayer->
q
);
94
return
0;
95
}
96
97
static
int
vplayer_read_packet
(
AVFormatContext
*
s
,
AVPacket
*
pkt
)
98
{
99
VPlayerContext
*vplayer = s->
priv_data
;
100
return
ff_subtitles_queue_read_packet
(&vplayer->
q
, pkt);
101
}
102
103
static
int
vplayer_read_seek
(
AVFormatContext
*
s
,
int
stream_index,
104
int64_t min_ts, int64_t ts, int64_t max_ts,
int
flags
)
105
{
106
VPlayerContext
*vplayer = s->
priv_data
;
107
return
ff_subtitles_queue_seek
(&vplayer->
q
, s, stream_index,
108
min_ts, ts, max_ts, flags);
109
}
110
111
static
int
vplayer_read_close
(
AVFormatContext
*
s
)
112
{
113
VPlayerContext
*vplayer = s->
priv_data
;
114
ff_subtitles_queue_clean
(&vplayer->
q
);
115
return
0;
116
}
117
118
AVInputFormat
ff_vplayer_demuxer
= {
119
.
name
=
"vplayer"
,
120
.long_name =
NULL_IF_CONFIG_SMALL
(
"VPlayer subtitles"
),
121
.priv_data_size =
sizeof
(
VPlayerContext
),
122
.
read_probe
=
vplayer_probe
,
123
.
read_header
=
vplayer_read_header
,
124
.
read_packet
=
vplayer_read_packet
,
125
.read_seek2 =
vplayer_read_seek
,
126
.
read_close
=
vplayer_read_close
,
127
.extensions =
"txt"
,
128
};
Generated on Sun Mar 8 2015 02:35:13 for FFmpeg by
1.8.2