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dl-fldigi/src/rsid/rsid.cxx

1020 wiersze
27 KiB
C++
Czysty Bezpośredni odnośnik Wina Historia

// ----------------------------------------------------------------------------
//
// rsid.cxx
//
// Copyright (C) 2008-2012
// Dave Freese, W1HKJ
// Copyright (C) 2009-2012
// Stelios Bounanos, M0GLD
// Copyright (C) 2012
// John Douyere, VK2ETA
//
// This file is part of fldigi.
//
// Fldigi 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.
//
// Fldigi 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 fldigi. If not, see <http://www.gnu.org/licenses/>.
// ----------------------------------------------------------------------------
#include <config.h>
#include <string>
#include <cmath>
#include <cstring>
#include <float.h>
#include <samplerate.h>
#include "rsid.h"
#include "filters.h"
#include "misc.h"
#include "trx.h"
#include "fl_digi.h"
#include "configuration.h"
#include "confdialog.h"
#include "qrunner.h"
#include "notify.h"
#include "debug.h"
#include "main.h"
#include "arq_io.h"
#include "data_io.h"
LOG_FILE_SOURCE(debug::LOG_MODEM);
#include "rsid_defs.cxx"
#define RSWINDOW 1
const int cRsId::Squares[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15,
0, 2, 4, 6, 8,10,12,14, 9,11,13,15, 1, 3, 5, 7,
0, 3, 6, 5,12,15,10, 9, 1, 2, 7, 4,13,14,11, 8,
0, 4, 8,12, 9,13, 1, 5,11,15, 3, 7, 2, 6,10,14,
0, 5,10,15,13, 8, 7, 2, 3, 6, 9,12,14,11, 4, 1,
0, 6,12,10, 1, 7,13,11, 2, 4,14, 8, 3, 5,15, 9,
0, 7,14, 9, 5, 2,11,12,10,13, 4, 3,15, 8, 1, 6,
0, 8, 9, 1,11, 3, 2,10,15, 7, 6,14, 4,12,13, 5,
0, 9,11, 2,15, 6, 4,13, 7,14,12, 5, 8, 1, 3,10,
0,10,13, 7, 3, 9,14, 4, 6,12,11, 1, 5,15, 8, 2,
0,11,15, 4, 7,12, 8, 3,14, 5, 1,10, 9, 2, 6,13,
0,12, 1,13, 2,14, 3,15, 4, 8, 5, 9, 6,10, 7,11,
0,13, 3,14, 6,11, 5, 8,12, 1,15, 2,10, 7, 9, 4,
0,14, 5,11,10, 4,15, 1,13, 3, 8, 6, 7, 9, 2,12,
0,15, 7, 8,14, 1, 9, 6, 5,10, 2,13,11, 4,12, 3
};
const int cRsId::indices[] = {
2, 4, 8, 9, 11, 15, 7, 14, 5, 10, 13, 3
};
cRsId::cRsId()
{
int error;
src_state = src_new(progdefaults.sample_converter, 1, &error);
if (error) {
LOG_ERROR("src_new error %d: %s", error, src_strerror(error));
abort();
}
src_data.end_of_input = 0;
reset();
rsfft = new g_fft<rs_fft_type>(RSID_ARRAY_SIZE);
memset(fftwindow, 0, sizeof(fftwindow));
if (RSWINDOW) {
for (int i = 0; i < RSID_ARRAY_SIZE; i++)
// fftwindow[i] = blackman ( 1.0 * i / RSID_ARRAY_SIZE );
fftwindow[i] = hamming ( 1.0 * i / RSID_ARRAY_SIZE );
// fftwindow[i] = hanning ( 1.0 * i / RSID_ARRAY_SIZE );
// fftwindow[i] = 1.0;
}
pCodes1 = new unsigned char[rsid_ids_size1 * RSID_NSYMBOLS];
memset(pCodes1, 0, sizeof(pCodes1) * sizeof(unsigned char));
pCodes2 = new unsigned char[rsid_ids_size2 * RSID_NSYMBOLS];
memset(pCodes2, 0, sizeof(pCodes2) * sizeof(unsigned char));
// Initialization of assigned mode/submode IDs.
unsigned char* c;
for (int i = 0; i < rsid_ids_size1; i++) {
c = pCodes1 + i * RSID_NSYMBOLS;
Encode(rsid_ids_1[i].rs, c);
}
for (int i = 0; i < rsid_ids_size2; i++) {
c = pCodes2 + i * RSID_NSYMBOLS;
Encode(rsid_ids_2[i].rs, c);
}
#if 0
printf("pcode 1\n");
printf(",rs, name, mode,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14\n");
for (int i = 0; i < rsid_ids_size1; i++) {
printf("%d,%d,%s,%d", i, rsid_ids_1[i].rs, rsid_ids_1[i].name, rsid_ids_1[i].mode);
for (int j = 0; j < RSID_NSYMBOLS + 1; j++)
printf(",%d", pCodes1[i*(RSID_NSYMBOLS + 1) + j]);
printf("\n");
}
printf("\npcode 2\n");
printf(", rs, name, mode,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14\n");
for (int i = 0; i < rsid_ids_size2; i++) {
printf("%d,%d,%s,%d", i, rsid_ids_2[i].rs, rsid_ids_2[i].name, rsid_ids_2[i].mode);
for (int j = 0; j < RSID_NSYMBOLS + 1; j++)
printf(",%d", pCodes2[i*(RSID_NSYMBOLS+ 1) + j]);
printf("\n");
}
#endif
nBinLow = 3;
nBinHigh = RSID_FFT_SIZE - 32; // - RSID_NTIMES - 2
outbuf = 0;
symlen = 0;
reset();
}
cRsId::~cRsId()
{
delete [] pCodes1;
delete [] pCodes2;
delete [] outbuf;
delete rsfft;
src_delete(src_state);
}
void cRsId::reset()
{
iPrevDistance = iPrevDistance2 = 99;
bPrevTimeSliceValid = bPrevTimeSliceValid2 = false;
found1 = found2 = false;
rsid_secondary_time_out = 0;
memset(aInputSamples, 0, (RSID_ARRAY_SIZE * 2) * sizeof(float));
memset(aFFTcmplx, 0, RSID_ARRAY_SIZE * sizeof(rs_cpx_type));
memset(aFFTAmpl, 0, RSID_FFT_SIZE * sizeof(rs_fft_type));
memset(fft_buckets, 0, RSID_NTIMES * RSID_FFT_SIZE * sizeof(int));
int error = src_reset(src_state);
if (error)
LOG_ERROR("src_reset error %d: %s", error, src_strerror(error));
src_data.src_ratio = 0.0;
inptr = RSID_FFT_SIZE;
hamming_resolution = progdefaults.RsID_label_type;
}
void cRsId::Encode(int code, unsigned char *rsid)
{
rsid[0] = code >> 8;
rsid[1] = (code >> 4) & 0x0f;
rsid[2] = code & 0x0f;
for (int i = 3; i < RSID_NSYMBOLS; i++)
rsid[i] = 0;
for (int i = 0; i < 12; i++) {
for (int j = RSID_NSYMBOLS - 1; j > 0; j--)
rsid[j] = rsid[j - 1] ^ Squares[(rsid[j] << 4) + indices[i]];
rsid[0] = Squares[(rsid[0] << 4) + indices[i]];
}
}
void cRsId::CalculateBuckets(const rs_fft_type *pSpectrum, int iBegin, int iEnd)
{
rs_fft_type Amp = 0.0, AmpMax = 0.0;
int iBucketMax = iBegin - 2;
int j;
for (int i = iBegin; i < iEnd; i += 2) {
if (iBucketMax == i - 2) {
AmpMax = pSpectrum[i];
iBucketMax = i;
for (j = i + 2; j < i + RSID_NTIMES + 2; j += 2) {
Amp = pSpectrum[j];
if (Amp > AmpMax) {
AmpMax = Amp;
iBucketMax = j;
}
}
}
else {
j = i + RSID_NTIMES;
Amp = pSpectrum[j];
if (Amp > AmpMax) {
AmpMax = Amp;
iBucketMax = j;
}
}
fft_buckets[RSID_NTIMES - 1][i] = (iBucketMax - i) >> 1;
}
}
void cRsId::receive(const float* buf, size_t len)
{
if (len == 0) return;
int srclen = static_cast<int>(len);
double src_ratio = RSID_SAMPLE_RATE / active_modem->get_samplerate();
if (rsid_secondary_time_out > 0) {
rsid_secondary_time_out -= 1.0 * len / active_modem->get_samplerate();
if (rsid_secondary_time_out <= 0) {
LOG_INFO("%s", "Secondary RsID timed out");
reset();
}
}
if (src_data.src_ratio != src_ratio) {
src_data.src_ratio = src_ratio;
src_set_ratio(src_state, src_data.src_ratio);
}
while (srclen > 0) {
src_data.data_in = const_cast<float*>(buf);
src_data.input_frames = srclen;
src_data.data_out = &aInputSamples[inptr];
src_data.output_frames = RSID_ARRAY_SIZE * 2 - inptr;
src_data.input_frames_used = 0;
int error = src_process(src_state, &src_data);
if (unlikely(error)) {
LOG_ERROR("src_process error %d: %s", error, src_strerror(error));
return;
}
size_t gend = src_data.output_frames_gen;
size_t used = src_data.input_frames_used;
inptr += gend;
buf += used;
srclen -= used;
while (inptr >= RSID_ARRAY_SIZE) {
search();
memmove(&aInputSamples[0], &aInputSamples[RSID_FFT_SAMPLES],
(RSID_BUFFER_SIZE - RSID_FFT_SAMPLES)*sizeof(float));
inptr -= RSID_FFT_SAMPLES;
}
}
}
void cRsId::search(void)
{
if (progdefaults.rsidWideSearch) {
nBinLow = 3;
nBinHigh = RSID_FFT_SIZE - 32;
}
else {
float centerfreq = active_modem->get_freq();
float bpf = 1.0 * RSID_ARRAY_SIZE / RSID_SAMPLE_RATE;
nBinLow = (int)((centerfreq - 100.0 * 2) * bpf);
nBinHigh = (int)((centerfreq + 100.0 * 2) * bpf);
}
if (nBinLow < 3) nBinLow = 3;
if (nBinHigh > RSID_FFT_SIZE - 32) nBinHigh = RSID_FFT_SIZE - 32;
bool bReverse = !(wf->Reverse() ^ wf->USB());
if (bReverse) {
nBinLow = RSID_FFT_SIZE - nBinHigh;
nBinHigh = RSID_FFT_SIZE - nBinLow;
}
if (RSWINDOW) {
for (int i = 0; i < RSID_ARRAY_SIZE; i++)
aFFTcmplx[i] = cmplx(aInputSamples[i] * fftwindow[i], 0);
} else {
for (int i = 0; i < RSID_ARRAY_SIZE; i++)
aFFTcmplx[i] = cmplx(aInputSamples[i], 0);
}
rsfft->ComplexFFT(aFFTcmplx);
memset(aFFTAmpl, 0, sizeof(aFFTAmpl));
static const double pscale = 4.0 / (RSID_FFT_SIZE * RSID_FFT_SIZE);
if (unlikely(bReverse)) {
for (int i = 0; i < RSID_FFT_SIZE; i++)
aFFTAmpl[RSID_FFT_SIZE - 1 - i] = norm(aFFTcmplx[i]) * pscale;
} else {
for (int i = 0; i < RSID_FFT_SIZE; i++)
aFFTAmpl[i] = norm(aFFTcmplx[i]) * pscale;
}
int bucket_low = 3;
int bucket_high = RSID_FFT_SIZE - 32;
if (bReverse) {
bucket_low = RSID_FFT_SIZE - bucket_high;
bucket_high = RSID_FFT_SIZE - bucket_low;
}
memmove(fft_buckets,
&(fft_buckets[1][0]),
(RSID_NTIMES - 1) * RSID_FFT_SIZE * sizeof(int));
memset(&(fft_buckets[RSID_NTIMES - 1][0]), 0, RSID_FFT_SIZE * sizeof(int));
CalculateBuckets ( aFFTAmpl, bucket_low, bucket_high - RSID_NTIMES);
CalculateBuckets ( aFFTAmpl, bucket_low + 1, bucket_high - RSID_NTIMES);
int symbol_out_1 = -1;
int bin_out_1 = -1;
int symbol_out_2 = -1;
int bin_out_2 = -1;
if (rsid_secondary_time_out <= 0) {
found1 = search_amp(bin_out_1, symbol_out_1, pCodes1);
if (found1) {
if (symbol_out_1 != RSID_ESCAPE) {
if (bReverse)
bin_out_1 = 1024 - bin_out_1 - 31;
apply(bin_out_1, symbol_out_1, 0);
reset();
return;
} else {
// 10 rsid_gap + 15 symbols + 2 for timing errors
rsid_secondary_time_out = 27 * RSID_SYMLEN;
return;
}
} else
return;
}
found2 = search_amp(bin_out_2, symbol_out_2, pCodes2);
if (found2) {
if (symbol_out_2 != RSID_NONE2) {
if (bReverse)
bin_out_2 = 1024 - bin_out_2 - 31;
apply(bin_out_2, symbol_out_2, 1);
}
reset();
}
}
void cRsId::setup_mode(int iSymbol)
{
switch (iSymbol) {
case RSID_RTTY_ASCII_7:
progdefaults.rtty_baud = 5;
progdefaults.rtty_bits = 1;
progdefaults.rtty_shift = 9;
REQ(&set_rtty_tab_widgets);
break;
case RSID_RTTY_ASCII_8:
progdefaults.rtty_baud = 5;
progdefaults.rtty_bits = 2;
progdefaults.rtty_shift = 9;
REQ(&set_rtty_tab_widgets);
break;
case RSID_RTTY_45:
progdefaults.rtty_baud = 1;
progdefaults.rtty_bits = 0;
progdefaults.rtty_shift = 3;
REQ(&set_rtty_tab_widgets);
break;
case RSID_RTTY_50:
progdefaults.rtty_baud = 2;
progdefaults.rtty_bits = 0;
progdefaults.rtty_shift = 3;
REQ(&set_rtty_tab_widgets);
break;
case RSID_RTTY_75:
progdefaults.rtty_baud = 4;
progdefaults.rtty_bits = 0;
progdefaults.rtty_shift = 9;
REQ(&set_rtty_tab_widgets);
break;
// DominoEX / FEC
case RSID_DOMINOEX_4: case RSID_DOMINOEX_5: case RSID_DOMINOEX_8:
case RSID_DOMINOEX_11: case RSID_DOMINOEX_16: case RSID_DOMINOEX_22:
progdefaults.DOMINOEX_FEC = false;
REQ(&set_dominoex_tab_widgets);
break;
case RSID_DOMINOEX_4_FEC: case RSID_DOMINOEX_5_FEC: case RSID_DOMINOEX_8_FEC:
case RSID_DOMINOEX_11_FEC: case RSID_DOMINOEX_16_FEC: case RSID_DOMINOEX_22_FEC:
progdefaults.DOMINOEX_FEC = true;
REQ(&set_dominoex_tab_widgets);
break;
// olivia parameters
case RSID_OLIVIA_4_125:
progdefaults.oliviatones = 1;
progdefaults.oliviabw = 0;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_4_250:
progdefaults.oliviatones = 1;
progdefaults.oliviabw = 1;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_4_500:
progdefaults.oliviatones = 1;
progdefaults.oliviabw = 2;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_4_1000:
progdefaults.oliviatones = 1;
progdefaults.oliviabw = 3;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_4_2000:
progdefaults.oliviatones = 1;
progdefaults.oliviabw = 4;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_8_125:
progdefaults.oliviatones = 2;
progdefaults.oliviabw = 0;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_8_250:
progdefaults.oliviatones = 2;
progdefaults.oliviabw = 1;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_8_500:
progdefaults.oliviatones = 2;
progdefaults.oliviabw = 2;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_8_1000:
progdefaults.oliviatones = 2;
progdefaults.oliviabw = 3;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_8_2000:
progdefaults.oliviatones = 2;
progdefaults.oliviabw = 4;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_16_500:
progdefaults.oliviatones = 3;
progdefaults.oliviabw = 2;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_16_1000:
progdefaults.oliviatones = 3;
progdefaults.oliviabw = 3;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_16_2000:
progdefaults.oliviatones = 3;
progdefaults.oliviabw = 4;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_32_1000:
progdefaults.oliviatones = 4;
progdefaults.oliviabw = 3;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_32_2000:
progdefaults.oliviatones = 4;
progdefaults.oliviabw = 4;
REQ(&set_olivia_tab_widgets);
break;
case RSID_OLIVIA_64_2000:
progdefaults.oliviatones = 5;
progdefaults.oliviabw = 4;
REQ(&set_olivia_tab_widgets);
break;
// contestia parameters
case RSID_CONTESTIA_4_125:
progdefaults.contestiatones = 1;
progdefaults.contestiabw = 0;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_4_250:
progdefaults.contestiatones = 1;
progdefaults.contestiabw = 1;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_4_500:
progdefaults.contestiatones = 1;
progdefaults.contestiabw = 2;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_4_1000:
progdefaults.contestiatones = 1;
progdefaults.contestiabw = 3;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_4_2000:
progdefaults.contestiatones = 1;
progdefaults.contestiabw = 4;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_8_125:
progdefaults.contestiatones = 2;
progdefaults.contestiabw = 0;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_8_250:
progdefaults.contestiatones = 2;
progdefaults.contestiabw = 1;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_8_500:
progdefaults.contestiatones = 2;
progdefaults.contestiabw = 2;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_8_1000:
progdefaults.contestiatones = 2;
progdefaults.contestiabw = 3;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_8_2000:
progdefaults.contestiatones = 2;
progdefaults.contestiabw = 4;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_16_500:
progdefaults.contestiatones = 3;
progdefaults.contestiabw = 2;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_16_1000:
progdefaults.contestiatones = 3;
progdefaults.contestiabw = 3;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_16_2000:
progdefaults.contestiatones = 3;
progdefaults.contestiabw = 4;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_32_1000:
progdefaults.contestiatones = 4;
progdefaults.contestiabw = 3;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_32_2000:
progdefaults.contestiatones = 4;
progdefaults.contestiabw = 4;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_64_500:
progdefaults.contestiatones = 5;
progdefaults.contestiabw = 2;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_64_1000:
progdefaults.contestiatones = 5;
progdefaults.contestiabw = 3;
REQ(&set_contestia_tab_widgets);
break;
case RSID_CONTESTIA_64_2000:
progdefaults.contestiatones = 5;
progdefaults.contestiabw = 4;
REQ(&set_contestia_tab_widgets);
break;
default:
break;
} // switch (iSymbol)
}
void cRsId::apply(int iBin, int iSymbol, int extended)
{
ENSURE_THREAD(TRX_TID);
double rsidfreq = 0, currfreq = 0;
int n, mbin = NUM_MODES;
int tblsize;
const RSIDs *p_rsid;
if (extended) {
tblsize = rsid_ids_size2;
p_rsid = rsid_ids_2;
}
else {
tblsize = rsid_ids_size1;
p_rsid = rsid_ids_1;
}
currfreq = active_modem->get_freq();
rsidfreq = (iBin + RSID_NSYMBOLS - 0.5) * RSID_SAMPLE_RATE / 2048.0;
for (n = 0; n < tblsize; n++) {
if (p_rsid[n].rs == iSymbol) {
mbin = p_rsid[n].mode;
break;
}
}
if (mbin == NUM_MODES) {
char msg[50];
if (n < tblsize) // RSID known but unimplemented
snprintf(msg, sizeof(msg), "RSID: %s unimplemented",
p_rsid[n].name);
else // RSID unknown; shouldn't happen
snprintf(msg, sizeof(msg), "RSID: code %d unknown", iSymbol);
put_status(msg, 4.0);
LOG_VERBOSE("%s", msg);
return;
}
if (progdefaults.rsid_rx_modes.test(mbin)) {
LOG_VERBOSE("RSID: %s @ %0.1f Hz",
p_rsid[n].name, rsidfreq);
}
else {
LOG_DEBUG("Ignoring RSID: %s @ %0.1f Hz",
p_rsid[n].name, rsidfreq);
return;
}
if (mailclient || mailserver)
REQ(pskmail_notify_rsid, mbin);
if (progdefaults.rsid_auto_disable)
REQ(toggleRSID);
if (!progdefaults.disable_rsid_warning_dialog_box)
REQ(notify_rsid, mbin, rsidfreq);
if (progdefaults.rsid_notify_only) {
if (data_io_enabled == KISS_IO) {
bcast_rsid_kiss_frame(rsidfreq, mbin, (int) active_modem->get_txfreq(),
active_modem->get_mode(), RSID_KISS_NOTIFY);
}
return;
}
if (progdefaults.rsid_mark) // mark current modem & freq
REQ(note_qrg, false, "\nBefore RSID: ", "\n",
active_modem->get_mode(), 0LL, currfreq);
if(active_modem) // Currently only effects Olivia, Contestia and MT63.
active_modem->rx_flush();
setup_mode(iSymbol);
if (progdefaults.rsid_squelch)
REQ(init_modem_squelch, mbin, progdefaults.disable_rsid_freq_change ? currfreq : rsidfreq);
else
REQ(init_modem, mbin, progdefaults.disable_rsid_freq_change ? currfreq : rsidfreq);
}
inline int cRsId::HammingDistance(int iBucket, unsigned char *p2)
{
int dist = 0;
for (int i = 0, j = 1; i < RSID_NSYMBOLS; i++, j += 2) {
if (fft_buckets[j][iBucket] != p2[i]) {
++dist;
if (dist > hamming_resolution)
break;
}
}
return dist;
}
bool cRsId::search_amp( int &bin_out, int &symbol_out, unsigned char *pcode)
{
int i, j;
int iDistanceMin = 1000; // infinity
int iDistance = 1000;
int iBin = -1;
int iSymbol = -1;
int tblsize;
const RSIDs *prsid;
if (pcode == pCodes1) {
tblsize = rsid_ids_size1;
prsid = rsid_ids_1;
} else {
tblsize = rsid_ids_size2;
prsid = rsid_ids_2;
}
unsigned char *pc = 0;
for (i = 0; i < tblsize; i++) {
pc = pcode + i * RSID_NSYMBOLS;
for (j = nBinLow; j < nBinHigh - RSID_NTIMES; j++) {
iDistance = HammingDistance(j, pc);
if (iDistance < iDistanceMin) {
iDistanceMin = iDistance;
iSymbol = prsid[i].rs;
iBin = j;
if (iDistanceMin == 0) break;
}
}
}
if (iDistanceMin <= hamming_resolution) {
symbol_out = iSymbol;
bin_out = iBin;
return true;
}
return false;
}
//=============================================================================
// transmit rsid code for current mode
//=============================================================================
bool cRsId::assigned(trx_mode mode) {
rmode = RSID_NONE;
rmode2 = RSID_NONE2;
switch (mode) {
case MODE_RTTY :
if (progdefaults.rtty_baud == 5 && progdefaults.rtty_bits == 1 && progdefaults.rtty_shift == 9)
rmode = RSID_RTTY_ASCII_7;
else if (progdefaults.rtty_baud == 5 && progdefaults.rtty_bits == 1 && progdefaults.rtty_shift == 9)
rmode = RSID_RTTY_ASCII_8;
else if (progdefaults.rtty_baud == 1 && progdefaults.rtty_bits == 0 && progdefaults.rtty_shift == 3)
rmode = RSID_RTTY_45;
else if (progdefaults.rtty_baud == 2 && progdefaults.rtty_bits == 0 && progdefaults.rtty_shift == 3)
rmode = RSID_RTTY_50;
else if (progdefaults.rtty_baud == 4 && progdefaults.rtty_bits == 0 && progdefaults.rtty_shift == 9)
rmode = RSID_RTTY_75;
else
return false;
return true;
break;
case MODE_OLIVIA:
case MODE_OLIVIA_4_250:
case MODE_OLIVIA_8_250:
case MODE_OLIVIA_4_500:
case MODE_OLIVIA_8_500:
case MODE_OLIVIA_16_500:
case MODE_OLIVIA_8_1000:
case MODE_OLIVIA_16_1000:
case MODE_OLIVIA_32_1000:
case MODE_OLIVIA_64_2000:
if (progdefaults.oliviatones == 1 && progdefaults.oliviabw == 0)
rmode = RSID_OLIVIA_4_125;
else if (progdefaults.oliviatones == 1 && progdefaults.oliviabw == 1)
rmode = RSID_OLIVIA_4_250;
else if (progdefaults.oliviatones == 1 && progdefaults.oliviabw == 2)
rmode = RSID_OLIVIA_4_500;
else if (progdefaults.oliviatones == 1 && progdefaults.oliviabw == 3)
rmode = RSID_OLIVIA_4_1000;
else if (progdefaults.oliviatones == 1 && progdefaults.oliviabw == 4)
rmode = RSID_OLIVIA_4_2000;
else if (progdefaults.oliviatones == 2 && progdefaults.oliviabw == 0)
rmode = RSID_OLIVIA_8_125;
else if (progdefaults.oliviatones == 2 && progdefaults.oliviabw == 1)
rmode = RSID_OLIVIA_8_250;
else if (progdefaults.oliviatones == 2 && progdefaults.oliviabw == 2)
rmode = RSID_OLIVIA_8_500;
else if (progdefaults.oliviatones == 2 && progdefaults.oliviabw == 3)
rmode = RSID_OLIVIA_8_1000;
else if (progdefaults.oliviatones == 2 && progdefaults.oliviabw == 4)
rmode = RSID_OLIVIA_8_2000;
else if (progdefaults.oliviatones == 3 && progdefaults.oliviabw == 2)
rmode = RSID_OLIVIA_16_500;
else if (progdefaults.oliviatones == 3 && progdefaults.oliviabw == 3)
rmode = RSID_OLIVIA_16_1000;
else if (progdefaults.oliviatones == 3 && progdefaults.oliviabw == 4)
rmode = RSID_OLIVIA_16_2000;
else if (progdefaults.oliviatones == 4 && progdefaults.oliviabw == 3)
rmode = RSID_OLIVIA_32_1000;
else if (progdefaults.oliviatones == 4 && progdefaults.oliviabw == 4)
rmode = RSID_OLIVIA_32_2000;
else if (progdefaults.oliviatones == 5 && progdefaults.oliviabw == 4)
rmode = RSID_OLIVIA_64_2000;
else
return false;
return true;
break;
case MODE_CONTESTIA:
if (progdefaults.contestiatones == 1 && progdefaults.contestiabw == 0)
rmode = RSID_CONTESTIA_4_125;
else if (progdefaults.contestiatones == 1 && progdefaults.contestiabw == 1)
rmode = RSID_CONTESTIA_4_250;
else if (progdefaults.contestiatones == 1 && progdefaults.contestiabw == 2)
rmode = RSID_CONTESTIA_4_500;
else if (progdefaults.contestiatones == 1 && progdefaults.contestiabw == 3)
rmode = RSID_CONTESTIA_4_1000;
else if (progdefaults.contestiatones == 1 && progdefaults.contestiabw == 4)
rmode = RSID_CONTESTIA_4_2000;
else if (progdefaults.contestiatones == 2 && progdefaults.contestiabw == 0)
rmode = RSID_CONTESTIA_8_125;
else if (progdefaults.contestiatones == 2 && progdefaults.contestiabw == 1)
rmode = RSID_CONTESTIA_8_250;
else if (progdefaults.contestiatones == 2 && progdefaults.contestiabw == 2)
rmode = RSID_CONTESTIA_8_500;
else if (progdefaults.contestiatones == 2 && progdefaults.contestiabw == 3)
rmode = RSID_CONTESTIA_8_1000;
else if (progdefaults.contestiatones == 2 && progdefaults.contestiabw == 4)
rmode = RSID_CONTESTIA_8_2000;
else if (progdefaults.contestiatones == 3 && progdefaults.contestiabw == 2)
rmode = RSID_CONTESTIA_16_500;
else if (progdefaults.contestiatones == 3 && progdefaults.contestiabw == 3)
rmode = RSID_CONTESTIA_16_1000;
else if (progdefaults.contestiatones == 3 && progdefaults.contestiabw == 4)
rmode = RSID_CONTESTIA_16_2000;
else if (progdefaults.contestiatones == 4 && progdefaults.contestiabw == 3)
rmode = RSID_CONTESTIA_32_1000;
else if (progdefaults.contestiatones == 4 && progdefaults.contestiabw == 4)
rmode = RSID_CONTESTIA_32_2000;
else if (progdefaults.contestiatones == 5 && progdefaults.contestiabw == 2)
rmode = RSID_CONTESTIA_64_500;
else if (progdefaults.contestiatones == 5 && progdefaults.contestiabw == 3)
rmode = RSID_CONTESTIA_64_1000;
else if (progdefaults.contestiatones == 5 && progdefaults.contestiabw == 4)
rmode = RSID_CONTESTIA_64_2000;
else
return false;
return true;
break;
case MODE_DOMINOEX4:
if (progdefaults.DOMINOEX_FEC)
rmode = RSID_DOMINOEX_4_FEC;
break;
case MODE_DOMINOEX5:
if (progdefaults.DOMINOEX_FEC)
rmode = RSID_DOMINOEX_5_FEC;
break;
case MODE_DOMINOEX8:
if (progdefaults.DOMINOEX_FEC)
rmode = RSID_DOMINOEX_8_FEC;
break;
case MODE_DOMINOEX11:
if (progdefaults.DOMINOEX_FEC)
rmode = RSID_DOMINOEX_11_FEC;
break;
case MODE_DOMINOEX16:
if (progdefaults.DOMINOEX_FEC)
rmode = RSID_DOMINOEX_16_FEC;
break;
case MODE_DOMINOEX22:
if (progdefaults.DOMINOEX_FEC)
rmode = RSID_DOMINOEX_22_FEC;
break;
case MODE_MT63_500S:
rmode = RSID_MT63_500_ST;
break;
case MODE_MT63_500L:
rmode = RSID_MT63_500_LG;
break;
case MODE_MT63_1000S:
rmode = RSID_MT63_1000_ST;
break;
case MODE_MT63_1000L:
rmode = RSID_MT63_1000_LG;
break;
case MODE_MT63_2000S:
rmode = RSID_MT63_2000_ST;
break;
case MODE_MT63_2000L:
rmode = RSID_MT63_2000_LG;
break;
}
// if rmode is still unset, look it up
// Try secondary table first
if (rmode == RSID_NONE) {
for (size_t i = 0; i < sizeof(rsid_ids_2)/sizeof(*rsid_ids_2); i++) {
if (mode == rsid_ids_2[i].mode) {
rmode = RSID_ESCAPE;
rmode2 = rsid_ids_2[i].rs;
break;
}
}
if (rmode2 == RSID_NONE2) {
for (size_t i = 0; i < sizeof(rsid_ids_1)/sizeof(*rsid_ids_1); i++) {
if (mode == rsid_ids_1[i].mode) {
rmode = rsid_ids_1[i].rs;
break;
}
}
}
}
if (rmode == RSID_NONE) {
LOG_DEBUG("%s mode is not assigned an RSID", mode_info[mode].sname);
return false;
}
return true;
}
void cRsId::send(bool preRSID)
{
trx_mode mode = active_modem->get_mode();
if (!progdefaults.rsid_tx_modes.test(mode)) {
LOG_DEBUG("Mode %s excluded, not sending RSID", mode_info[mode].sname);
return;
}
if (!progdefaults.rsid_post && !preRSID)
return;
if (!assigned(mode)) return;
unsigned char rsid[RSID_NSYMBOLS];
double sr;
size_t len;
int iTone;
double freq, phaseincr;
double fr;
double phase;
Encode(rmode, rsid);
sr = active_modem->get_samplerate();
len = (size_t)floor(RSID_SYMLEN * sr);
if (unlikely(len != symlen)) {
symlen = len;
delete [] outbuf;
outbuf = new double[symlen];
}
// transmit 5 symbol periods of silence at beginning of rsid
memset(outbuf, 0, symlen * sizeof(*outbuf));
for (int i = 0; i < 5; i++)
active_modem->ModulateXmtr(outbuf, symlen);
// transmit sequence of 15 symbols (tones)
fr = 1.0 * active_modem->get_txfreq() - (RSID_SAMPLE_RATE * 7 / 1024);
phase = 0.0;
for (int i = 0; i < 15; i++) {
iTone = rsid[i];
if (active_modem->get_reverse())
iTone = 15 - iTone;
freq = fr + iTone * RSID_SAMPLE_RATE / 1024;
phaseincr = 2.0 * M_PI * freq / sr;
for (size_t j = 0; j < symlen; j++) {
phase += phaseincr;
if (phase > 2.0 * M_PI) phase -= 2.0 * M_PI;
outbuf[j] = sin(phase);
}
active_modem->ModulateXmtr(outbuf, symlen);
}
if (rmode == RSID_ESCAPE && rmode2 != RSID_NONE2) {
// transmit 10 symbol periods of silence between rsid sequences
memset(outbuf, 0, symlen * sizeof(*outbuf));
for (int i = 0; i < 10; i++)
active_modem->ModulateXmtr(outbuf, symlen);
Encode(rmode2, rsid);
sr = active_modem->get_samplerate();
len = (size_t)floor(RSID_SYMLEN * sr);
if (unlikely(len != symlen)) {
symlen = len;
delete [] outbuf;
outbuf = new double[symlen];
}
// transmit sequence of 15 symbols (tones)
fr = 1.0 * active_modem->get_txfreq() - (RSID_SAMPLE_RATE * 7 / 1024);
phase = 0.0;
for (int i = 0; i < 15; i++) {
iTone = rsid[i];
if (active_modem->get_reverse())
iTone = 15 - iTone;
freq = fr + iTone * RSID_SAMPLE_RATE / 1024;
phaseincr = 2.0 * M_PI * freq / sr;
for (size_t j = 0; j < symlen; j++) {
phase += phaseincr;
if (phase > 2.0 * M_PI) phase -= 2.0 * M_PI;
outbuf[j] = sin(phase);
}
active_modem->ModulateXmtr(outbuf, symlen);
}
}
// 5 symbol periods of silence at end of transmission
// and between RsID and the data signal
int nperiods = 5;
memset(outbuf, 0, symlen * sizeof(*outbuf));
for (int i = 0; i < nperiods; i++)
active_modem->ModulateXmtr(outbuf, symlen);
}
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