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
|
/*
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.
*/
#include "audio_decoder.h"
#include "audio_buffers.h"
#include "exceptions.h"
#include "log.h"
#include "resampler.h"
#include "i18n.h"
using std::stringstream;
using std::list;
using std::pair;
using std::cout;
using boost::optional;
using boost::shared_ptr;
AudioDecoder::AudioDecoder (shared_ptr<const Film> film, shared_ptr<const AudioContent> content)
: Decoder (film)
, _audio_content (content)
, _last_audio (0)
{
if (content->output_audio_frame_rate() != content->content_audio_frame_rate() && content->audio_channels ()) {
_resampler.reset (new Resampler (content->content_audio_frame_rate(), content->output_audio_frame_rate(), content->audio_channels ()));
}
}
void
AudioDecoder::audio (shared_ptr<const AudioBuffers> data, ContentTime time)
{
if (_resampler) {
data = _resampler->run (data);
}
_pending.push_back (shared_ptr<DecodedAudio> (new DecodedAudio (data, time)));
_last_audio = time + (data->frames() * TIME_HZ / _audio_content->output_audio_frame_rate());
}
void
AudioDecoder::flush ()
{
if (!_resampler) {
return;
}
shared_ptr<const AudioBuffers> b = _resampler->flush ();
if (b) {
audio (b, _last_audio);
}
}
|
