blob: e154619b710444c9996fbf54bbe59ed387d0a1e7 (
plain)
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
|
/*
Copyright (C) 2014 Matthias P. Braendli (http://www.opendigitalradio.org)
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 3 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, see <http://www.gnu.org/licenses/>.
faad_decoder.h
Use libfaad to decode the AAC content of the DAB+ subchannel
Authors:
Matthias P. Braendli <matthias@mpb.li>
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <sstream>
#include <vector>
#include <neaacdec.h>
#ifndef __FAAD_DECODER_H_
#define __FAAD_DECODER_H_
class FaadHandle
{
public:
FaadHandle()
{
decoder = NeAACDecOpen();
}
FaadHandle(const FaadHandle&)
{
this->decoder = NeAACDecOpen();
}
FaadHandle& operator=(const FaadHandle&)
{
this->decoder = NeAACDecOpen();
return *this;
}
~FaadHandle()
{
NeAACDecClose(decoder);
decoder = NULL;
}
NeAACDecHandle decoder;
};
struct audio_statistics_t {
int16_t average_level_left;
int16_t average_level_right;
int16_t peak_level_left;
int16_t peak_level_right;
};
class FaadDecoder
{
public:
FaadDecoder();
~FaadDecoder();
FaadDecoder& operator=(FaadDecoder&& other);
FaadDecoder(FaadDecoder&& other);
FaadDecoder(const FaadDecoder&) = delete;
FaadDecoder& operator=(const FaadDecoder&) = delete;
void open(std::string filename, bool ps_flag, bool aac_channel_mode,
bool dac_rate, bool sbr_flag, int mpeg_surround_config);
bool decode(std::vector<std::vector<uint8_t> > aus);
bool is_initialised(void) { return m_initialised; }
audio_statistics_t get_audio_statistics(void) const;
private:
int get_aac_channel_configuration();
size_t m_data_len;
audio_statistics_t m_stats;
std::string m_filename;
FILE* m_fd;
/* Data needed for FAAD */
bool m_ps_flag;
bool m_aac_channel_mode;
bool m_dac_rate;
bool m_sbr_flag;
int m_mpeg_surround_config;
int m_channels;
int m_sample_rate;
bool m_initialised;
FaadHandle m_faad_handle;
};
#endif
|
