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
|
/*
Copyright (C) 2014 CSP Innovazione nelle ICT s.c.a r.l. (http://www.csp.it/)
Copyright (C) 2017 Matthias P. Braendli (http://www.opendigitalradio.org)
Copyright (C) 2015 Data Path
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/>.
Authors:
Sergio Sagliocco <sergio.sagliocco@csp.it>
Matthias P. Braendli <matthias@mpb.li>
/ | |- ')|) |-|_ _ (|,_ .| _ ,_ \
Data Path \(|(||_(|/_| (||_||(a)_||||(|||.(_()|||/
*/
#include "figs.hpp"
#include <cstdio>
#include <cstring>
#include <map>
#include <unordered_set>
static std::unordered_set<int> services_seen;
bool fig0_18_is_complete(int services_id)
{
bool complete = services_seen.count(services_id);
if (complete) {
services_seen.clear();
}
else {
services_seen.insert(services_id);
}
return complete;
}
// FIG 0/18 Announcement support
// ETSI EN 300 401 8.1.6.1
fig_result_t fig0_18(fig0_common_t& fig0, const display_settings_t &disp)
{
uint32_t key;
uint16_t SId, Asu_flags;
uint8_t i = 1, j, Rfa, Number_clusters;
fig_result_t r;
uint8_t* f = fig0.f;
while (i < (fig0.figlen - 4)) {
// iterate over announcement support
// SId, Asu flags, Rfa, Number of clusters
SId = ((uint16_t)f[i] << 8) | (uint16_t)f[i+1];
r.complete |= fig0_18_is_complete(SId);
Asu_flags = ((uint16_t)f[i+2] << 8) | (uint16_t)f[i+3];
Rfa = (f[i+4] >> 5);
Number_clusters = (f[i+4] & 0x1F);
r.msgs.push_back(strprintf("SId=0x%X", SId));
r.msgs.push_back(strprintf("Asu flags=0x%04x", Asu_flags));
if (Rfa != 0) {
r.errors.push_back(strprintf("Rfa=%d invalid value", Rfa));
}
r.msgs.push_back(strprintf("Number of clusters=%d", Number_clusters));
key = ((uint32_t)fig0.oe() << 17) | ((uint32_t)fig0.pd() << 16) | (uint32_t)SId;
r.msgs.push_back(strprintf("database key=0x%05x", key));
// CEI Change Event Indication
if ((Number_clusters == 0) && (Asu_flags == 0)) {
r.msgs.emplace_back("CEI");
}
i += 5;
for(j = 0; (j < Number_clusters) && (i < fig0.figlen); j++) {
// iterate over Cluster Id
r.msgs.emplace_back(1, strprintf("Cluster Id=0x%X", f[i]));
i++;
}
if (j < Number_clusters) {
r.errors.push_back("missing Cluster Id, fig length too short !");
}
// decode announcement support types
for (j = 0; j < 16; j++) {
if (Asu_flags & (1 << j)) {
r.msgs.emplace_back(1, strprintf("Announcement support=%s", get_announcement_type(j)));
}
}
}
return r;
}
|
