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
|
/*
Copyright (C) 2012 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.
*/
/** @file src/encoder.h
* @brief Parent class for classes which can encode video and audio frames.
*/
#include "encoder.h"
#include "util.h"
using namespace boost;
int const Encoder::_history_size = 25;
/** @param s FilmState of the film that we are encoding.
* @param o Options.
* @param l Log.
*/
Encoder::Encoder (shared_ptr<const FilmState> s, shared_ptr<const Options> o, Log* l)
: _fs (s)
, _opt (o)
, _log (l)
{
}
/** @return an estimate of the current number of frames we are encoding per second,
* or 0 if not known.
*/
float
Encoder::current_frames_per_second () const
{
boost::mutex::scoped_lock lock (_history_mutex);
if (int (_time_history.size()) < _history_size) {
return 0;
}
struct timeval now;
gettimeofday (&now, 0);
return _history_size / (seconds (now) - seconds (_time_history.back ()));
}
void
Encoder::frame_done ()
{
boost::mutex::scoped_lock lock (_history_mutex);
struct timeval tv;
gettimeofday (&tv, 0);
_time_history.push_front (tv);
if (int (_time_history.size()) > _history_size) {
_time_history.pop_back ();
}
}
|
