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DSDplus library: interim state #4

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This commit is contained in:
f4exb 2016-04-10 19:59:39 +02:00
parent a448a8e462
commit f6ac20cbb0
6 changed files with 313 additions and 2 deletions
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2
dsdplus/CMakeLists.txt
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@ -7,6 +7,7 @@ set(dsdplus_SOURCES
dsd_mbe.cpp
dsd_opts.cpp
dsd_state.cpp
dstar.cpp
)
set(dsdplus_HEADERS
@ -16,6 +17,7 @@ set(dsdplus_HEADERS
dsd_mbe.h
dsd_opts.h
dsd_state.h
dstar.h
)
include_directories(

2
dsdplus/dmr_data.cpp
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@ -212,7 +212,7 @@ void DSDDMRData::preProcess()
if (m_dsdDecoder->m_opts.errorbars == 1)
{
printf("%s %s ", m_dsdDecoder->m_state.slot0light, m_dsdDecoder->m_state.slot1light);
fprintf(m_dsdDecoder->m_state.logfile, "%s %s ", m_dsdDecoder->m_state.slot0light, m_dsdDecoder->m_state.slot1light);
}
}

14
dsdplus/dsd_decoder.cpp
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@ -26,7 +26,8 @@ DSDDecoder::DSDDecoder() :
m_hasSync(0),
m_mbeDecoder(this),
m_dsdDMRVoice(this),
m_dsdDMRData(this)
m_dsdDMRData(this),
m_dsdDstar(this)
{
resetSymbol();
resetFrameSync();
@ -71,6 +72,15 @@ void DSDDecoder::run(short sample)
case DSDprocessDMRvoice:
m_dsdDMRVoice.process();
break;
case DSDprocessDMRdata:
m_dsdDMRData.process();
break;
case DSDprocessDSTAR:
m_dsdDstar.process();
break;
case DSDprocessDSTAR_HD:
m_dsdDstar.processHD();
break;
default:
break;
}
@ -1646,6 +1656,7 @@ void DSDDecoder::processFrame()
m_state.nac = 0;
sprintf(m_state.fsubtype, " VOICE ");
m_dsdDstar.init();
m_fsmState = DSDprocessDSTAR;
}
else if ((m_state.synctype == 18) || (m_state.synctype == 19))
@ -1665,6 +1676,7 @@ void DSDDecoder::processFrame()
m_state.nac = 0;
sprintf(m_state.fsubtype, " DATA ");
m_dsdDstar.init();
m_fsmState = DSDprocessDSTAR_HD;
}
else

3
dsdplus/dsd_decoder.h
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@ -23,6 +23,7 @@
#include "dsd_mbe.h"
#include "dmr_voice.h"
#include "dmr_data.h"
#include "dstar.h"
/*
* Frame sync patterns
@ -67,6 +68,7 @@ class DSDDecoder
friend class DSDMBEDecoder;
friend class DSDDMRVoice;
friend class DSDDMRData;
friend class DSDDstar;
public:
typedef enum
{
@ -132,6 +134,7 @@ private:
// Frame decoders
DSDDMRVoice m_dsdDMRVoice;
DSDDMRData m_dsdDMRData;
DSDDstar m_dsdDstar;
};
} // namespace dsdplus

229
dsdplus/dstar.cpp Normal file
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@ -0,0 +1,229 @@
///////////////////////////////////////////////////////////////////////////////////
// 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/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <string.h>
#include "dstar.h"
#include "dsd_decoder.h"
namespace DSDplus
{
const int DSDDstar::dW[72] = {
// 0-11
0, 0,
3, 2,
1, 1,
0, 0,
1, 1,
0, 0,
// 12-23
3, 2,
1, 1,
3, 2,
1, 1,
0, 0,
3, 2,
// 24-35
0, 0,
3, 2,
1, 1,
0, 0,
1, 1,
0, 0,
// 36-47
3, 2,
1, 1,
3, 2,
1, 1,
0, 0,
3, 2,
// 48-59
0, 0,
3, 2,
1, 1,
0, 0,
1, 1,
0, 0,
// 60-71
3, 2,
1, 1,
3, 3,
2, 1,
0, 0,
3, 3,
};
const int DSDDstar::dX[72] = {
// 0-11
10, 22,
11, 9,
10, 22,
11, 23,
8, 20,
9, 21,
// 12-23
10, 8,
9, 21,
8, 6,
7, 19,
8, 20,
9, 7,
// 24-35
6, 18,
7, 5,
6, 18,
7, 19,
4, 16,
5, 17,
// 36-47
6, 4,
5, 17,
4, 2,
3, 15,
4, 16,
5, 3,
// 48-59
2, 14,
3, 1,
2, 14,
3, 15,
0, 12,
1, 13,
// 60-71
2, 0,
1, 13,
0, 12,
10, 11,
0, 12,
1, 13,
};
DSDDstar::DSDDstar(DSDDecoder *dsdDecoder) :
m_dsdDecoder(dsdDecoder)
{
}
DSDDstar::~DSDDstar()
{
}
void DSDDstar::init()
{
if (m_dsdDecoder->m_opts.errorbars == 1) {
fprintf(m_dsdDecoder->m_state.logfile, "e:");
}
if (m_dsdDecoder->m_state.synctype == 18) {
framecount = 0;
m_dsdDecoder->m_state.synctype = 6;
} else if (m_dsdDecoder->m_state.synctype == 19) {
framecount = 0;
m_dsdDecoder->m_state.synctype = 7;
} else {
framecount = 1; //just saw a sync frame; there should be 20 not 21 till the next
}
sync_missed = 0;
bitbuffer = 0;
m_symbolIndex = 0;
}
void DSDDstar::initVoiceFrame()
{
memset(ambe_fr, 0, 96);
// voice frame
w = dW;
x = dX;
}
void DSDDstar::process()
{
if (m_symbolIndex < 72) // voice frame
{
if (m_symbolIndex == 0) {
initVoiceFrame();
}
processVoice();
}
else if (m_symbolIndex < 97) // data frame
{
}
m_symbolIndex++;
}
void DSDDstar::processHD()
{
}
void DSDDstar::processVoice()
{
int dibit = m_dsdDecoder->getDibit(); // get dibit from symbol and store it in cache
m_dibitCache[m_symbolIndex] = dibit;
if (m_symbolIndex == 72-1) // last dibit in voice frame
{
for (int i = 0; i < 72; i++)
{
int dibit = m_dibitCache[i];
bitbuffer <<= 1;
if (dibit == 1) {
bitbuffer |= 0x01;
}
if ((bitbuffer & 0x00FFFFFF) == 0x00AAB468)
{
// we're slipping bits
fprintf(m_dsdDecoder->m_state.logfile, "sync in voice after i=%d, restarting\n", i);
//ugh just start over
i = 0;
w = dW;
x = dX;
framecount = 1;
continue;
}
ambe_fr[*w][*x] = (1 & dibit);
w++;
x++;
}
m_dsdDecoder->m_mbeDecoder.processFrame(0, ambe_fr, 0);
}
}
void DSDDstar::processData()
{
}
} // namespace DSDplus

65
dsdplus/dstar.h Normal file
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@ -0,0 +1,65 @@
///////////////////////////////////////////////////////////////////////////////////
// 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 DSDPLUS_DSTAR_H_
#define DSDPLUS_DSTAR_H_
namespace DSDplus
{
class DSDDecoder;
class DSDDstar
{
public:
DSDDstar(DSDDecoder *dsdDecoder);
~DSDDstar();
void init();
void process();
void processHD();
private:
void initVoiceFrame();
void processVoice();
void processData();
DSDDecoder *m_dsdDecoder;
int m_symbolIndex; //!< Current symbol index
int m_dibitCache[97]; // has to handle a voice + data frame (97 dibits)
int m_dibitIndex; // index in dibit cache
// DSTAR
char ambe_fr[4][24];
unsigned char data[9];
unsigned int bits[4];
int framecount;
int sync_missed;
unsigned char slowdata[4];
unsigned int bitbuffer;
const int *w, *x;
// DSTAR-HD
int radioheaderbuffer[660];
// constants
static const int dW[72];
static const int dX[72];
};
} // namespace DSDplus
#endif /* DSDPLUS_DSTAR_H_ */