1 // Copyright (c) Charles J. Cliffe
2 // SPDX-License-Identifier: GPL-2.0+
3
4 #include "ModemASK.h"
5
ModemASK()6 ModemASK::ModemASK() : ModemDigital() {
7 demodASK2 = modem_create(LIQUID_MODEM_ASK2);
8 demodASK4 = modem_create(LIQUID_MODEM_ASK4);
9 demodASK8 = modem_create(LIQUID_MODEM_ASK8);
10 demodASK16 = modem_create(LIQUID_MODEM_ASK16);
11 demodASK32 = modem_create(LIQUID_MODEM_ASK32);
12 demodASK64 = modem_create(LIQUID_MODEM_ASK64);
13 demodASK128 = modem_create(LIQUID_MODEM_ASK128);
14 demodASK256 = modem_create(LIQUID_MODEM_ASK256);
15 demodASK = demodASK2;
16 cons = 2;
17 }
18
factory()19 ModemBase *ModemASK::factory() {
20 return new ModemASK;
21 }
22
~ModemASK()23 ModemASK::~ModemASK() {
24 modem_destroy(demodASK4);
25 modem_destroy(demodASK8);
26 modem_destroy(demodASK16);
27 modem_destroy(demodASK32);
28 modem_destroy(demodASK64);
29 modem_destroy(demodASK128);
30 modem_destroy(demodASK256);
31 }
32
getName()33 std::string ModemASK::getName() {
34 return "ASK";
35 }
36
getSettings()37 ModemArgInfoList ModemASK::getSettings() {
38 ModemArgInfoList args;
39
40 ModemArgInfo consArg;
41 consArg.key = "cons";
42 consArg.name = "Constellation";
43 consArg.description = "Modem Constellation Pattern";
44 consArg.value = std::to_string(cons);
45 consArg.type = ModemArgInfo::Type::STRING;
46 std::vector<std::string> consOpts;
47 consOpts.push_back("2");
48 consOpts.push_back("4");
49 consOpts.push_back("8");
50 consOpts.push_back("16");
51 consOpts.push_back("32");
52 consOpts.push_back("64");
53 consOpts.push_back("128");
54 consOpts.push_back("256");
55 consArg.options = consOpts;
56 args.push_back(consArg);
57
58 return args;
59 }
60
writeSetting(std::string setting,std::string value)61 void ModemASK::writeSetting(std::string setting, std::string value) {
62 if (setting == "cons") {
63 int newCons = std::stoi(value);
64 updateDemodulatorCons(newCons);
65 }
66 }
67
readSetting(std::string setting)68 std::string ModemASK::readSetting(std::string setting) {
69 if (setting == "cons") {
70 return std::to_string(cons);
71 }
72 return "";
73 }
74
updateDemodulatorCons(int cons_in)75 void ModemASK::updateDemodulatorCons(int cons_in) {
76 cons = cons_in;
77 switch (cons_in) {
78 case 2:
79 demodASK = demodASK2;
80 break;
81 case 4:
82 demodASK = demodASK4;
83 break;
84 case 8:
85 demodASK = demodASK8;
86 break;
87 case 16:
88 demodASK = demodASK16;
89 break;
90 case 32:
91 demodASK = demodASK32;
92 break;
93 case 64:
94 demodASK = demodASK64;
95 break;
96 case 128:
97 demodASK = demodASK128;
98 break;
99 case 256:
100 demodASK = demodASK256;
101 break;
102 }
103 }
104
demodulate(ModemKit * kit,ModemIQData * input,AudioThreadInput *)105 void ModemASK::demodulate(ModemKit *kit, ModemIQData *input, AudioThreadInput * /* audioOut */) {
106 auto *dkit = (ModemKitDigital *)kit;
107
108 digitalStart(dkit, demodASK, input);
109
110 for (size_t i = 0, bufSize = input->data.size(); i < bufSize; i++) {
111 modem_demodulate(demodASK, input->data[i], &demodOutputDataDigital[i]);
112 }
113 updateDemodulatorLock(demodASK, 0.005f);
114
115 digitalFinish(dkit, demodASK);
116 }
117