1 /*
2 * Copyright (C) 2018
3 * Matthias P. Braendli (matthias.braendli@mpb.li)
4 *
5 * Copyright (C) 2017
6 * Albrecht Lohofener (albrechtloh@gmx.de)
7 *
8 * This file is based on SDR-J
9 * Copyright (C) 2010, 2011, 2012
10 * Jan van Katwijk (J.vanKatwijk@gmail.com)
11 *
12 * This file is part of the welle.io.
13 * Many of the ideas as implemented in welle.io are derived from
14 * other work, made available through the GNU general Public License.
15 * All copyrights of the original authors are recognized.
16 *
17 * welle.io is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21 *
22 * welle.io is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 *
27 * You should have received a copy of the GNU General Public License
28 * along with welle.io; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 *
31 */
32
33 #include <iostream>
34 #include "channels.h"
35
36 using namespace std;
37
38 string Channels::firstChannel = "5A";
39
Channels()40 Channels::Channels()
41 {
42 // Band III
43 frequencyMap["5A"] = 174928000;
44 frequencyMap["5B"] = 176640000;
45 frequencyMap["5C"] = 178352000;
46 frequencyMap["5D"] = 180064000;
47 frequencyMap["6A"] = 181936000;
48 frequencyMap["6B"] = 183648000;
49 frequencyMap["6C"] = 185360000;
50 frequencyMap["6D"] = 187072000;
51 frequencyMap["7A"] = 188928000;
52 frequencyMap["7B"] = 190640000;
53 frequencyMap["7C"] = 192352000;
54 frequencyMap["7D"] = 194064000;
55 frequencyMap["8A"] = 195936000;
56 frequencyMap["8B"] = 197648000;
57 frequencyMap["8C"] = 199360000;
58 frequencyMap["8D"] = 201072000;
59 frequencyMap["9A"] = 202928000;
60 frequencyMap["9B"] = 204640000;
61 frequencyMap["9C"] = 206352000;
62 frequencyMap["9D"] = 208064000;
63 frequencyMap["10A"] = 209936000;
64 frequencyMap["10B"] = 211648000;
65 frequencyMap["10C"] = 213360000;
66 frequencyMap["10D"] = 215072000;
67 frequencyMap["11A"] = 216928000;
68 frequencyMap["11B"] = 218640000;
69 frequencyMap["11C"] = 220352000;
70 frequencyMap["11D"] = 222064000;
71 frequencyMap["12A"] = 223936000;
72 frequencyMap["12B"] = 225648000;
73 frequencyMap["12C"] = 227360000;
74 frequencyMap["12D"] = 229072000;
75 frequencyMap["13A"] = 230784000;
76 frequencyMap["13B"] = 232496000;
77 frequencyMap["13C"] = 234208000;
78 frequencyMap["13D"] = 235776000;
79 frequencyMap["13E"] = 237488000;
80 frequencyMap["13F"] = 239200000;
81
82 // Band L
83 frequencyMap["LA"] = 1452960000;
84 frequencyMap["LB"] = 1454672000;
85 frequencyMap["LC"] = 1456384000;
86 frequencyMap["LD"] = 1458096000;
87 frequencyMap["LE"] = 1459808000;
88 frequencyMap["LF"] = 1461520000;
89 frequencyMap["LG"] = 1463232000;
90 frequencyMap["LH"] = 1464944000;
91 frequencyMap["LI"] = 1466656000;
92 frequencyMap["LJ"] = 1468368000;
93 frequencyMap["LK"] = 1470080000;
94 frequencyMap["LL"] = 1471792000;
95 frequencyMap["LM"] = 1473504000;
96 frequencyMap["LN"] = 1475216000;
97 frequencyMap["LO"] = 1476928000;
98 frequencyMap["LP"] = 1478640000;
99
100 // Init with first frequency
101 currentChannel = firstChannel;
102 currentFrequency = getFrequency(firstChannel);
103 currentFrequencyIndex = 0;
104 }
105
getFrequency(const string & channelName)106 int Channels::getFrequency(const string& channelName)
107 {
108 int frequency = 0;
109
110 try {
111 frequency = frequencyMap.at(channelName);
112 }
113 catch (const std::out_of_range&) {
114 clog << "DABConstants: Frequency doesn't exist" << endl;
115 frequency = 0;
116 }
117
118 currentFrequency = frequency;
119 currentChannel = channelName;
120
121 // Get index of current fequency
122 for (int i=0; i<NUMBEROFCHANNELS; i++) {
123 if (getChannelNameAtIndex(i) == channelName) {
124 currentFrequencyIndex = i;
125 }
126 }
127
128 return frequency;
129 }
130
getNextChannel(void)131 string Channels::getNextChannel(void)
132 {
133 currentFrequencyIndex++;
134
135 if (currentFrequencyIndex >= NUMBEROFCHANNELS)
136 return "";
137 else
138 return getChannelNameAtIndex(currentFrequencyIndex);
139 }
140
getCurrentChannel(void)141 string Channels::getCurrentChannel(void)
142 {
143 return currentChannel;
144 }
145
getCurrentFrequency(void)146 int Channels::getCurrentFrequency(void)
147 {
148 return currentFrequency;
149 }
150
getCurrentIndex()151 int Channels::getCurrentIndex()
152 {
153 return currentFrequencyIndex;
154 }
155
getChannelNameAtIndex(int index)156 string Channels::getChannelNameAtIndex(int index)
157 {
158 string channelName = "";
159
160 switch(index)
161 {
162 // Band III
163 case 0: channelName = "5A"; break;
164 case 1: channelName = "5B"; break;
165 case 2: channelName = "5C"; break;
166 case 3: channelName = "5D"; break;
167 case 4: channelName = "6A"; break;
168 case 5: channelName = "6B"; break;
169 case 6: channelName = "6C"; break;
170 case 7: channelName = "6D"; break;
171 case 8: channelName = "7A"; break;
172 case 9: channelName = "7B"; break;
173 case 10: channelName = "7C"; break;
174 case 11: channelName = "7D"; break;
175 case 12: channelName = "8A"; break;
176 case 13: channelName = "8B"; break;
177 case 14: channelName = "8C"; break;
178 case 15: channelName = "8D"; break;
179 case 16: channelName = "9A"; break;
180 case 17: channelName = "9B"; break;
181 case 18: channelName = "9C"; break;
182 case 19: channelName = "9D"; break;
183 case 20: channelName = "10A"; break;
184 case 21: channelName = "10B"; break;
185 case 22: channelName = "10C"; break;
186 case 23: channelName = "10D"; break;
187 case 24: channelName = "11A"; break;
188 case 25: channelName = "11B"; break;
189 case 26: channelName = "11C"; break;
190 case 27: channelName = "11D"; break;
191 case 28: channelName = "12A"; break;
192 case 29: channelName = "12B"; break;
193 case 30: channelName = "12C"; break;
194 case 31: channelName = "12D"; break;
195 case 32: channelName = "13A"; break;
196 case 33: channelName = "13B"; break;
197 case 34: channelName = "13C"; break;
198 case 35: channelName = "13D"; break;
199 case 36: channelName = "13E"; break;
200 case 37: channelName = "13F"; break;
201
202 // Band L
203 case 38: channelName = "LA"; break;
204 case 39: channelName = "LB"; break;
205 case 40: channelName = "LC"; break;
206 case 41: channelName = "LD"; break;
207 case 42: channelName = "LE"; break;
208 case 43: channelName = "LF"; break;
209 case 44: channelName = "LG"; break;
210 case 45: channelName = "LH"; break;
211 case 46: channelName = "LI"; break;
212 case 47: channelName = "LJ"; break;
213 case 48: channelName = "LK"; break;
214 case 49: channelName = "LL"; break;
215 case 50: channelName = "LM"; break;
216 case 51: channelName = "LN"; break;
217 case 52: channelName = "LO"; break;
218 case 53: channelName = "LP"; break;
219 default: clog << "DABConstants:"
220 << "No channel name at index" <<
221 to_string(index) << endl;
222 }
223
224 return channelName;
225 }
226
getChannelForFrequency(int frequency)227 std::string Channels::getChannelForFrequency(int frequency)
228 {
229 for (const auto c_f : frequencyMap) {
230 if (c_f.second == frequency) {
231 return c_f.first;
232 }
233 }
234 throw out_of_range("frequency is outside channel list");
235 }
236