1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "ffmpeg_subtitle_stream.h"
#include "raw_convert.h"
#include <libxml++/libxml++.h>
#include <boost/foreach.hpp>
#include <iostream>
using std::string;
using std::map;
using std::list;
using std::cout;
/** Construct a SubtitleStream from a value returned from to_string().
* @param t String returned from to_string().
* @param v State file version.
*/
FFmpegSubtitleStream::FFmpegSubtitleStream (cxml::ConstNodePtr node, int version)
: FFmpegStream (node)
{
if (version == 32) {
BOOST_FOREACH (cxml::NodePtr i, node->node_children ("Period")) {
/* In version 32 we assumed that from times were unique, so they weer
used as identifiers.
*/
add_subtitle (
raw_convert<string> (i->string_child ("From")),
ContentTimePeriod (
ContentTime (i->number_child<ContentTime::Type> ("From")),
ContentTime (i->number_child<ContentTime::Type> ("To"))
)
);
}
} else {
/* In version 33 we use a hash of various parts of the subtitle as the id */
BOOST_FOREACH (cxml::NodePtr i, node->node_children ("Subtitle")) {
add_subtitle (
raw_convert<string> (i->string_child ("Id")),
ContentTimePeriod (
ContentTime (i->number_child<ContentTime::Type> ("From")),
ContentTime (i->number_child<ContentTime::Type> ("To"))
)
);
}
}
}
void
FFmpegSubtitleStream::as_xml (xmlpp::Node* root) const
{
FFmpegStream::as_xml (root);
for (map<string, ContentTimePeriod>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
xmlpp::Node* node = root->add_child ("Subtitle");
node->add_child("Id")->add_child_text (i->first);
node->add_child("From")->add_child_text (raw_convert<string> (i->second.from.get ()));
node->add_child("To")->add_child_text (raw_convert<string> (i->second.to.get ()));
}
}
void
FFmpegSubtitleStream::add_subtitle (string id, ContentTimePeriod period)
{
DCPOMATIC_ASSERT (_subtitles.find (id) == _subtitles.end ());
_subtitles[id] = period;
}
list<ContentTimePeriod>
FFmpegSubtitleStream::subtitles_during (ContentTimePeriod period, bool starting) const
{
list<ContentTimePeriod> d;
/* XXX: inefficient */
for (map<string, ContentTimePeriod>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
if ((starting && period.contains (i->second.from)) || (!starting && period.overlaps (i->second))) {
d.push_back (i->second);
}
}
return d;
}
ContentTime
FFmpegSubtitleStream::find_subtitle_to (string id) const
{
map<string, ContentTimePeriod>::const_iterator i = _subtitles.find (id);
DCPOMATIC_ASSERT (i != _subtitles.end ());
return i->second.to;
}
/** Add some offset to all the times in the stream */
void
FFmpegSubtitleStream::add_offset (ContentTime offset)
{
for (map<string, ContentTimePeriod>::iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
i->second.from += offset;
i->second.to += offset;
}
}
|
