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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 Edouard Griffiths, F4EXB. //
// //
// 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 as version 3 of the License, or //
// //
// 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 V3 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/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef DSDCC_DSTAR_H_
#define DSDCC_DSTAR_H_
#include <string>
#include "viterbi3.h"
#include "crc.h"
#include "locator.h"
#include "export.h"
namespace DSDcc
{
class DSDDecoder;
class DSDCC_API DSDDstar
{
public:
explicit DSDDstar(DSDDecoder *dsdDecoder);
~DSDDstar();
void init(bool header = false);
void process();
void processHD();
const std::string& getRpt1() const { return m_header.m_rpt1; }
const std::string& getRpt2() const { return m_header.m_rpt2; }
const std::string& getYourSign() const { return m_header.m_yourSign; }
const std::string& getMySign() const { return m_header.m_mySign; }
const char *getInfoText() const { return m_slowData.text; }
const char *getLocator() const { return m_slowData.locator; }
int getBearing() const { return m_slowData.bearing; }
float getDistance() const { return m_slowData.distance; }
private:
typedef enum
{
DStarVoiceFrame,
DStarDataFrame,
DStarSyncFrame
} DStarFrameTYpe;
struct DStarHeader
{
void clear()
{
m_rpt1.clear();
m_rpt2.clear();
m_yourSign.clear();
m_mySign.clear();
m_rpt1FromHD = false;
m_rpt2FromHD = false;
m_yourSignFromHD = false;
m_mySignFromHD = false;
}
void setRpt1(const char *rpt1, bool fromHD)
{
if (!m_rpt1FromHD || fromHD)
{
m_rpt1 = std::string(rpt1, 8);
m_rpt1FromHD = fromHD;
}
}
void setRpt2(const char *rpt2, bool fromHD)
{
if (!m_rpt2FromHD || fromHD)
{
m_rpt2 = std::string(rpt2, 8);
m_rpt2FromHD = fromHD;
}
}
void setYourSign(const char *yourSign, bool fromHD)
{
if (!m_yourSignFromHD || fromHD)
{
m_yourSign = std::string(yourSign, 8);
m_yourSignFromHD = fromHD;
}
}
void setMySign(const char *mySign, const char *mySignInfo, bool fromHD)
{
if (!m_mySignFromHD || fromHD)
{
m_mySign = std::string(mySign, 8);
m_mySign += '/';
m_mySign += std::string(mySignInfo, 4);
m_mySignFromHD = fromHD;
}
}
std::string m_rpt1;
std::string m_rpt2;
std::string m_yourSign;
std::string m_mySign;
bool m_rpt1FromHD;
bool m_rpt2FromHD;
bool m_yourSignFromHD;
bool m_mySignFromHD;
};
typedef enum
{
DStarSlowData0,
DStarSlowData1,
DStarSlowData2,
DStarSlowDataGPS,
DStarSlowDataText,
DStarSlowDataHeader,
DStarSlowDataFiller,
DStarSlowDataNone,
} DStarSlowDataType;
struct DStarSlowData
{
void init()
{
counter = 0;
radioHeaderIndex = 0;
textFrameIndex = 0;
memset(radioHeader, 0, 41);
memset(text, 0x20, 20);
text[20] = '\0';
memset(gpsNMEA, 0, 256);
gpsIndex = 0;
gpsStart = true;
memset(locator, 0x20, 6);
locator[6] = '\0';
bearing = 0;
distance = 0.0;
currentDataType = DStarSlowDataNone;
}
int counter;
char radioHeader[41];
int radioHeaderIndex;
char text[20+1];
int textFrameIndex;
char gpsNMEA[256];
int gpsIndex;
bool gpsStart;
char locator[6+1];
int bearing;
float distance;
DStarSlowDataType currentDataType;
};
struct DPRS
{
DPRS() :
m_lon(0.0f),
m_lat(0.0f)
{}
bool matchDSTAR(const char *d);
unsigned int getCRC(const char *d);
float m_lon;
float m_lat;
LocPoint m_locPoint;
};
void initVoiceFrame();
void initDataFrame();
void processVoice();
void processData();
void processSlowData(bool firstFrame);
void processSlowDataByte(unsigned char byte);
void processSlowDataGroup();
void processDPRS();
void processSync();
void dstar_header_decode();
void reset_header_strings();
void storeSymbolDV(int bitindex, unsigned char bit, bool lsbFirst = true);
DSDDecoder *m_dsdDecoder;
int m_voiceFrameCount;
DStarFrameTYpe m_frameType;
int m_symbolIndex; //!< Current symbol index in non HD sequence
int m_symbolIndexHD; //!< Current symbol index in HD sequence
Viterbi3 m_viterbi;
DStarCRC m_crcDStar;
CRC m_crc;
// DSTAR
unsigned char nullBytes[4];
unsigned char slowdata[4];
unsigned int slowdataIx;
const int *w, *x;
// DSTAR-HD
DStarHeader m_header;
DStarSlowData m_slowData;
DPRS m_dprs;
// constants
static const int dW[72];
static const int dX[72];
static const unsigned char m_terminationSequence[48];
};
} // namespace DSDcc
#endif /* DSTAR_H_ */
|
