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
|
/*
Copyright (C) 2013 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 "silence_decoder.h"
#include "null_content.h"
#include "audio_buffers.h"
using std::min;
using boost::shared_ptr;
SilenceDecoder::SilenceDecoder (shared_ptr<const Film> f, shared_ptr<NullContent> c)
: Decoder (f)
, AudioDecoder (f, c)
{
}
void
SilenceDecoder::pass ()
{
shared_ptr<const Film> film = _film.lock ();
assert (film);
Time const this_time = min (_audio_content->length() - _next_audio, TIME_HZ / 2);
shared_ptr<AudioBuffers> data (new AudioBuffers (MAX_AUDIO_CHANNELS, film->time_to_audio_frames (this_time)));
data->make_silent ();
audio (data, _next_audio);
}
void
SilenceDecoder::seek (Time t)
{
_next_audio = t;
}
Time
SilenceDecoder::next () const
{
return _next_audio;
}
|
