Start restructuring the YSF code.
This commit is contained in:
parent
8362e3f38c
commit
1d9f4dc29e
6 changed files with 289 additions and 141 deletions
222
YSFControl.cpp
222
YSFControl.cpp
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@ -12,23 +12,18 @@
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*/
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#include "YSFControl.h"
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#include "YSFFICH.h"
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#include "Utils.h"
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#include "Sync.h"
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#include "Log.h"
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#include <cstdio>
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#include <cassert>
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#include <cstring>
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#include <ctime>
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// #define DUMP_YSF
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/*
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* TODO:
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* AMBE FEC reconstruction.
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* Callsign extraction + late entry.
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* Uplink and downlink callsign addition.
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*/
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CYSFControl::CYSFControl(const std::string& callsign, IDisplay* display, unsigned int timeout, bool duplex, bool parrot) :
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m_display(display),
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m_duplex(duplex),
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@ -37,7 +32,6 @@ m_state(RS_RF_LISTENING),
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m_timeoutTimer(1000U, timeout),
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m_interval(),
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m_frames(0U),
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m_fich(),
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m_source(NULL),
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m_dest(NULL),
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m_payload(),
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@ -79,10 +73,11 @@ bool CYSFControl::writeModem(unsigned char *data)
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if (type == TAG_LOST)
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return false;
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bool valid = m_fich.decode(data + 2U);
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CYSFFICH fich;
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bool valid = fich.decode(data + 2U);
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if (valid && m_state == RS_RF_LISTENING) {
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unsigned char fi = m_fich.getFI();
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unsigned char fi = fich.getFI();
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if (fi == YSF_FI_TERMINATOR)
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return false;
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@ -98,27 +93,85 @@ bool CYSFControl::writeModem(unsigned char *data)
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if (m_state != RS_RF_AUDIO)
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return false;
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unsigned char fi = m_fich.getFI();
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if (valid && fi == YSF_FI_TERMINATOR) {
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unsigned char fi = fich.getFI();
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if (valid && fi == YSF_FI_HEADER) {
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CSync::addYSFSync(data + 2U);
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m_fich.encode(data + 2U);
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unsigned char fn = fich.getFN();
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unsigned char ft = fich.getFT();
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unsigned char dt = fich.getDT();
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unsigned char cm = fich.getCM();
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unsigned char fn = m_fich.getFN();
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unsigned char ft = m_fich.getFT();
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unsigned char dt = m_fich.getDT();
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unsigned char orig[YSF_FRAME_LENGTH_BYTES];
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::memcpy(orig, data + 2U, YSF_FRAME_LENGTH_BYTES);
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unsigned int errs = m_fich.getErrors();
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fich.encode(data + 2U);
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valid = m_payload.processHeader(data + 2U);
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LogDebug("YSF, FI=%X FN=%u FT=%u DT=%X Errs=%u", fi, fn, ft, dt, errs);
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unsigned int errs = calculateBER(orig, data + 2U);
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LogDebug("YSF, FI=%u FN=%u FT=%u DT=%u BER=%.1f%%", fi, fn, ft, dt, float(errs) / 9.6F);
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// m_payload.process(data + 2U, fi, fn, ft, dt);
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if (m_duplex) {
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fich.setMR(YSF_MR_BUSY);
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fich.encode(data + 2U);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeQueue(data);
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}
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if (m_parrot != NULL) {
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fich.setMR(YSF_MR_NOT_BUSY);
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fich.encode(data + 2U);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeParrot(data);
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}
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if (valid)
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m_source = m_payload.getSource();
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if (cm == YSF_CM_GROUP) {
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m_dest = (unsigned char*)"CQCQCQ ";
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} else {
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if (valid)
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m_dest = m_payload.getDest();
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}
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#if defined(DUMP_YSF)
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writeFile(data + 2U);
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#endif
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if (m_source != NULL && m_dest != NULL)
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LogMessage("YSF, received header from %10.10s to %10.10s", m_source, m_dest);
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else if (m_source == NULL && m_dest != NULL)
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LogMessage("YSF, received header from ?????????? to %10.10s", m_dest);
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else if (m_source != NULL && m_dest == NULL)
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LogMessage("YSF, received header from %10.10s to ??????????", m_source);
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else
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LogMessage("YSF, received header from ?????????? to ??????????");
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} else if (valid && fi == YSF_FI_TERMINATOR) {
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CSync::addYSFSync(data + 2U);
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unsigned char fn = fich.getFN();
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unsigned char ft = fich.getFT();
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unsigned char dt = fich.getDT();
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unsigned char orig[YSF_FRAME_LENGTH_BYTES];
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::memcpy(orig, data + 2U, YSF_FRAME_LENGTH_BYTES);
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fich.encode(data + 2U);
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m_payload.processTrailer(data + 2U);
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unsigned int errs = calculateBER(orig, data + 2U);
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LogDebug("YSF, FI=%u FN=%u FT=%u DT=%u BER=%.1f%%", fi, fn, ft, dt, float(errs) / 9.6F);
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m_frames++;
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if (m_duplex) {
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m_fich.setMR(YSF_MR_BUSY);
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m_fich.encode(data + 2U);
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fich.setMR(YSF_MR_BUSY);
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fich.encode(data + 2U);
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data[0U] = TAG_EOT;
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data[1U] = 0x00U;
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@ -126,8 +179,8 @@ bool CYSFControl::writeModem(unsigned char *data)
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}
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if (m_parrot != NULL) {
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m_fich.setMR(YSF_MR_NOT_BUSY);
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m_fich.encode(data + 2U);
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fich.setMR(YSF_MR_NOT_BUSY);
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fich.encode(data + 2U);
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data[0U] = TAG_EOT;
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data[1U] = 0x00U;
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@ -142,66 +195,62 @@ bool CYSFControl::writeModem(unsigned char *data)
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writeEndOfTransmission();
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return false;
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} else {
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} else if (valid) {
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CSync::addYSFSync(data + 2U);
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if (valid) {
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m_fich.encode(data + 2U);
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unsigned char cm = fich.getCM();
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unsigned char fn = fich.getFN();
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unsigned char ft = fich.getFT();
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unsigned char dt = fich.getDT();
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unsigned char cm = m_fich.getCM();
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unsigned char fn = m_fich.getFN();
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unsigned char ft = m_fich.getFT();
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unsigned char dt = m_fich.getDT();
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unsigned char orig[YSF_FRAME_LENGTH_BYTES];
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::memcpy(orig, data + 2U, YSF_FRAME_LENGTH_BYTES);
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unsigned int errs = m_fich.getErrors();
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fich.encode(data + 2U);
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m_payload.processData(data + 2U, fn, dt);
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LogDebug("YSF, FI=%X FN=%u FT=%u DT=%X Errs=%u", fi, fn, ft, dt, errs);
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unsigned int errs = calculateBER(orig, data + 2U);
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LogDebug("YSF, FI=%u FN=%u FT=%u DT=%u BER=%.1f%%", fi, fn, ft, dt, float(errs) / 9.6F);
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// m_payload.process(data + 2U, fi, fn, ft, dt);
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bool change = false;
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bool change = false;
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if (m_dest == NULL) {
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if (cm == YSF_CM_GROUP) {
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m_dest = (unsigned char*)"CQCQCQ ";
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change = true;
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} else {
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m_dest = m_payload.getDest();
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if (m_dest != NULL)
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change = true;
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}
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}
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if (m_source == NULL) {
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m_source = m_payload.getSource();
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if (m_source != NULL)
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if (m_dest == NULL) {
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if (cm == YSF_CM_GROUP) {
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m_dest = (unsigned char*)"CQCQCQ ";
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change = true;
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} else {
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m_dest = m_payload.getDest();
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if (m_dest != NULL)
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change = true;
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}
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}
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if (change) {
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if (m_source != NULL && m_dest != NULL) {
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m_display->writeFusion((char*)m_source, (char*)m_dest);
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LogMessage("YSF, received transmission from %10.10s to %10.10s", m_source, m_dest);
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}
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if (m_source != NULL && m_dest == NULL) {
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m_display->writeFusion((char*)m_source, "??????????");
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LogMessage("YSF, received transmission from %10.10s to ??????????", m_source);
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}
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if (m_source == NULL && m_dest != NULL) {
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m_display->writeFusion("??????????", (char*)m_dest);
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LogMessage("YSF, received transmission from ?????????? to %10.10s", m_dest);
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}
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if (m_source == NULL) {
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m_source = m_payload.getSource();
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if (m_source != NULL)
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change = true;
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}
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if (change) {
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if (m_source != NULL && m_dest != NULL) {
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m_display->writeFusion((char*)m_source, (char*)m_dest);
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LogMessage("YSF, received transmission from %10.10s to %10.10s", m_source, m_dest);
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}
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if (m_source != NULL && m_dest == NULL) {
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m_display->writeFusion((char*)m_source, "??????????");
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LogMessage("YSF, received transmission from %10.10s to ??????????", m_source);
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}
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if (m_source == NULL && m_dest != NULL) {
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m_display->writeFusion("??????????", (char*)m_dest);
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LogMessage("YSF, received transmission from ?????????? to %10.10s", m_dest);
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}
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} else {
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// Reconstruct FICH based on the last valid frame
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m_fich.setFI(YSF_FI_COMMUNICATIONS); // Communication channel
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}
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m_frames++;
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if (m_duplex) {
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m_fich.setMR(YSF_MR_BUSY);
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m_fich.encode(data + 2U);
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fich.setMR(YSF_MR_BUSY);
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fich.encode(data + 2U);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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}
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if (m_parrot != NULL) {
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m_fich.setMR(YSF_MR_NOT_BUSY);
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m_fich.encode(data + 2U);
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fich.setMR(YSF_MR_NOT_BUSY);
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fich.encode(data + 2U);
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeParrot(data);
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}
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#if defined(DUMP_YSF)
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writeFile(data + 2U);
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#endif
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} else {
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CSync::addYSFSync(data + 2U);
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m_frames++;
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if (m_duplex) {
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeQueue(data);
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}
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if (m_parrot != NULL) {
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data[0U] = TAG_DATA;
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data[1U] = 0x00U;
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writeParrot(data);
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}
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#if defined(DUMP_YSF)
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writeFile(data + 2U);
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#endif
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@ -352,3 +421,18 @@ void CYSFControl::closeFile()
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m_fp = NULL;
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}
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}
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unsigned int CYSFControl::calculateBER(const unsigned char* orig, const unsigned char *curr) const
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{
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unsigned int errors = 0U;
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for (unsigned int i = 0U; i < YSF_FRAME_LENGTH_BYTES; i++) {
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unsigned char v = orig[i] ^ curr[i];
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while (v != 0U) {
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v &= v - 1U;
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errors++;
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}
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}
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return errors;
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}
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@ -26,7 +26,6 @@
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#include "YSFParrot.h"
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#include "Display.h"
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#include "Defines.h"
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#include "YSFFICH.h"
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#include "Timer.h"
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#include "Modem.h"
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@ -51,7 +50,6 @@ private:
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CTimer m_timeoutTimer;
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CStopWatch m_interval;
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unsigned int m_frames;
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CYSFFICH m_fich;
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unsigned char* m_source;
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unsigned char* m_dest;
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CYSFPayload m_payload;
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@ -66,6 +64,8 @@ private:
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bool openFile();
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bool writeFile(const unsigned char* data);
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void closeFile();
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unsigned int calculateBER(const unsigned char* orig, const unsigned char* curr) const;
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};
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#endif
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24
YSFFICH.cpp
24
YSFFICH.cpp
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@ -55,17 +55,13 @@ const unsigned int INTERLEAVE_TABLE[] = {
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38U, 78U, 118U, 158U, 198U};
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CYSFFICH::CYSFFICH() :
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m_bytes(NULL),
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m_fich(NULL),
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m_errors(0U)
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m_fich(NULL)
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{
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m_bytes = new unsigned char[YSF_FICH_LENGTH_BYTES];
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m_fich = new unsigned char[6U];
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}
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CYSFFICH::~CYSFFICH()
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{
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delete[] m_bytes;
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delete[] m_fich;
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}
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// Skip the sync bytes
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bytes += YSF_SYNC_LENGTH_BYTES;
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// Save a copy of the FICH for later error rate calculations
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::memcpy(m_bytes, bytes, YSF_FICH_LENGTH_BYTES);
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CYSFConvolution viterbi;
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viterbi.start();
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n++;
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WRITE_BIT1(bytes, n, s1);
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}
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// Calculate the errors
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m_errors = 0U;
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for (unsigned int i = 0U; i < YSF_FICH_LENGTH_BYTES; i++) {
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unsigned char v = bytes[i] ^ m_bytes[i];
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while (v != 0U) {
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v &= v - 1U;
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m_errors++;
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}
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}
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}
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unsigned char CYSFFICH::getFI() const
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@ -220,8 +203,3 @@ void CYSFFICH::setVoIP(bool on)
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else
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m_fich[2U] &= 0xFBU;
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}
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unsigned int CYSFFICH::getErrors() const
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{
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return m_errors;
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}
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@ -28,8 +28,6 @@ public:
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void encode(unsigned char* bytes);
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unsigned int getErrors() const;
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unsigned char getFI() const;
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unsigned char getCM() const;
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unsigned char getFN() const;
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@ -41,9 +39,7 @@ public:
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void setVoIP(bool set);
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private:
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unsigned char* m_bytes;
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unsigned char* m_fich;
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unsigned int m_errors;
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};
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#endif
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171
YSFPayload.cpp
171
YSFPayload.cpp
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@ -91,16 +91,10 @@ CYSFPayload::~CYSFPayload()
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delete[] m_dest;
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}
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void CYSFPayload::process(unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char ft, unsigned char dt)
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void CYSFPayload::processData(unsigned char* bytes, unsigned char fn, unsigned char dt)
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{
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assert(bytes != NULL);
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// Header and trailer
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if (fi == YSF_FI_HEADER || fi == YSF_FI_TERMINATOR) {
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processHeader(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES);
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return;
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}
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switch (dt) {
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case YSF_DT_VD_MODE1:
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processVDMode1(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES, fn);
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@ -120,7 +114,7 @@ void CYSFPayload::process(unsigned char* bytes, unsigned char fi, unsigned char
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}
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}
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void CYSFPayload::processHeader(unsigned char* data)
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bool CYSFPayload::processHeader(unsigned char* data)
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{
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unsigned char dch[45U];
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@ -147,13 +141,13 @@ void CYSFPayload::processHeader(unsigned char* data)
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unsigned char output[23U];
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conv.chainback(output, 180U);
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bool ret = CCRC::checkCCITT162(output, 22U);
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if (ret) {
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bool valid = CCRC::checkCCITT162(output, 22U);
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if (valid) {
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for (unsigned int i = 0U; i < 20U; i++)
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output[i] ^= WHITENING_DATA[i];
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CUtils::dump("Header/Trailer, Source", output + 0U, 10U);
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CUtils::dump("Header/Trailer, Destination", output + 10U, 10U);
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CUtils::dump("Header, Source", output + 0U, 10U);
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CUtils::dump("Header, Destination", output + 10U, 10U);
|
||||
|
||||
if (m_source == NULL) {
|
||||
m_source = new unsigned char[10U];
|
||||
|
@ -236,19 +230,129 @@ void CYSFPayload::processHeader(unsigned char* data)
|
|||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
return valid;
|
||||
}
|
||||
|
||||
void CYSFPayload::processTrailer(unsigned char* data)
|
||||
{
|
||||
unsigned char dch[45U];
|
||||
|
||||
unsigned char* p1 = data;
|
||||
unsigned char* p2 = dch;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p2, p1, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
|
||||
CYSFConvolution conv;
|
||||
conv.start();
|
||||
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
uint8_t s0 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
n++;
|
||||
uint8_t s1 = READ_BIT1(dch, n) ? 1U : 0U;
|
||||
|
||||
conv.decode(s0, s1);
|
||||
}
|
||||
|
||||
unsigned char output[23U];
|
||||
conv.chainback(output, 180U);
|
||||
|
||||
bool valid = CCRC::checkCCITT162(output, 22U);
|
||||
if (valid) {
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CUtils::dump("Trailer, Source", output + 0U, 10U);
|
||||
CUtils::dump("Trailer, Destination", output + 10U, 10U);
|
||||
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CCRC::addCCITT162(output, 22U);
|
||||
output[22U] = 0x00U;
|
||||
|
||||
unsigned char convolved[45U];
|
||||
conv.encode(output, convolved, 180U);
|
||||
|
||||
unsigned char bytes[45U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
p1 = data;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
}
|
||||
|
||||
::memset(output, ' ', 20U);
|
||||
if (m_downlink != NULL)
|
||||
::memcpy(output + 0U, m_downlink, 10U);
|
||||
if (m_uplink != NULL)
|
||||
::memcpy(output + 10U, m_uplink, 10U);
|
||||
for (unsigned int i = 0U; i < 20U; i++)
|
||||
output[i] ^= WHITENING_DATA[i];
|
||||
|
||||
CCRC::addCCITT162(output, 22U);
|
||||
output[22U] = 0x00U;
|
||||
|
||||
unsigned char convolved[45U];
|
||||
conv.encode(output, convolved, 180U);
|
||||
|
||||
unsigned char bytes[45U];
|
||||
unsigned int j = 0U;
|
||||
for (unsigned int i = 0U; i < 180U; i++) {
|
||||
unsigned int n = INTERLEAVE_TABLE_9_20[i];
|
||||
|
||||
bool s0 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
bool s1 = READ_BIT1(convolved, j) != 0U;
|
||||
j++;
|
||||
|
||||
WRITE_BIT1(bytes, n, s0);
|
||||
|
||||
n++;
|
||||
WRITE_BIT1(bytes, n, s1);
|
||||
}
|
||||
|
||||
p1 = data + 9U;
|
||||
p2 = bytes;
|
||||
for (unsigned int i = 0U; i < 5U; i++) {
|
||||
::memcpy(p1, p2, 9U);
|
||||
p1 += 18U; p2 += 9U;
|
||||
}
|
||||
}
|
||||
|
||||
void CYSFPayload::processVDMode1(unsigned char* data, unsigned char fn)
|
||||
{
|
||||
// Regenerate the AMBE FEC
|
||||
unsigned int errors = 0U;
|
||||
errors += m_fec.regenerateDMR(data + 9U);
|
||||
errors += m_fec.regenerateDMR(data + 27U);
|
||||
errors += m_fec.regenerateDMR(data + 45U);
|
||||
errors += m_fec.regenerateDMR(data + 63U);
|
||||
errors += m_fec.regenerateDMR(data + 81U);
|
||||
// unsigned int errors = 0U;
|
||||
// errors += m_fec.regenerateDMR(data + 9U);
|
||||
// errors += m_fec.regenerateDMR(data + 27U);
|
||||
// errors += m_fec.regenerateDMR(data + 45U);
|
||||
// errors += m_fec.regenerateDMR(data + 63U);
|
||||
// errors += m_fec.regenerateDMR(data + 81U);
|
||||
|
||||
LogMessage("YSF, V/D Mode 1, AMBE FEC %u/235 (%.1f%%)", errors, float(errors) / 2.35F);
|
||||
// LogMessage("YSF, V/D Mode 1, AMBE FEC %u/235 (%.1f%%)", errors, float(errors) / 2.35F);
|
||||
|
||||
unsigned char dch[45U];
|
||||
|
||||
|
@ -297,11 +401,6 @@ void CYSFPayload::processVDMode1(unsigned char* data, unsigned char fn)
|
|||
|
||||
break;
|
||||
|
||||
case 2U:
|
||||
CUtils::dump("V/D Mode 1, Rem 1+2", output + 0U, 10U);
|
||||
CUtils::dump("V/D Mode 1, Rem 3+4", output + 10U, 10U);
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
@ -403,12 +502,6 @@ void CYSFPayload::processVDMode2(unsigned char* data, unsigned char fn)
|
|||
::memcpy(m_source, output, 10U);
|
||||
}
|
||||
break;
|
||||
case 4U:
|
||||
CUtils::dump("V/D Mode 2, Rem 1+2", output, 10U);
|
||||
break;
|
||||
case 5U:
|
||||
CUtils::dump("V/D Mode 2, Rem 3+4", output, 10U);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
@ -516,10 +609,6 @@ void CYSFPayload::processDataFRMode(unsigned char* data, unsigned char fn)
|
|||
|
||||
break;
|
||||
|
||||
case 1U:
|
||||
CUtils::dump("Data FR Mode, Rem 1+2", output + 0U, 10U);
|
||||
CUtils::dump("Data FR Mode, Rem 3+4", output + 10U, 10U);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
@ -633,14 +722,14 @@ void CYSFPayload::processDataFRMode(unsigned char* data, unsigned char fn)
|
|||
void CYSFPayload::processVoiceFRMode(unsigned char* data)
|
||||
{
|
||||
// Regenerate the AMBE FEC
|
||||
unsigned int errors = 0U;
|
||||
errors += m_fec.regenerateYSF3(data + 0U);
|
||||
errors += m_fec.regenerateYSF3(data + 18U);
|
||||
errors += m_fec.regenerateYSF3(data + 36U);
|
||||
errors += m_fec.regenerateYSF3(data + 54U);
|
||||
errors += m_fec.regenerateYSF3(data + 72U);
|
||||
// unsigned int errors = 0U;
|
||||
// errors += m_fec.regenerateYSF3(data + 0U);
|
||||
// errors += m_fec.regenerateYSF3(data + 18U);
|
||||
// errors += m_fec.regenerateYSF3(data + 36U);
|
||||
// errors += m_fec.regenerateYSF3(data + 54U);
|
||||
// errors += m_fec.regenerateYSF3(data + 72U);
|
||||
|
||||
LogMessage("YSF, V Mode 3, AMBE FEC %u/720 (%.1f%%)", errors, float(errors) / 7.2F);
|
||||
// LogMessage("YSF, V Mode 3, AMBE FEC %u/720 (%.1f%%)", errors, float(errors) / 7.2F);
|
||||
}
|
||||
|
||||
void CYSFPayload::setUplink(const std::string& callsign)
|
||||
|
|
|
@ -28,7 +28,9 @@ public:
|
|||
CYSFPayload();
|
||||
~CYSFPayload();
|
||||
|
||||
void process(unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char ft, unsigned char dt);
|
||||
bool processHeader(unsigned char* bytes);
|
||||
void processData(unsigned char* bytes, unsigned char fn, unsigned char dt);
|
||||
void processTrailer(unsigned char* bytes);
|
||||
|
||||
unsigned char* getSource();
|
||||
unsigned char* getDest();
|
||||
|
@ -45,7 +47,6 @@ private:
|
|||
unsigned char* m_dest;
|
||||
CAMBEFEC m_fec;
|
||||
|
||||
void processHeader(unsigned char* bytes);
|
||||
void processVDMode1(unsigned char* bytes, unsigned char fn);
|
||||
void processVDMode2(unsigned char* bytes, unsigned char fn);
|
||||
void processDataFRMode(unsigned char* bytes, unsigned char fn);
|
||||
|
|
Loading…
Reference in a new issue