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First go at VW mode IMBE FEC.

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This commit is contained in:
Jonathan Naylor
2016-04-19 07:45:49 +01:00
parent b560594cac
commit 38dc134982
5 changed files with 199 additions and 107 deletions
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96
YSFPayload.cpp
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@@ -75,70 +75,56 @@ const unsigned char BIT_MASK_TABLE[] = {0x80U, 0x40U, 0x20U, 0x10U, 0x08U, 0x04U
#define READ_BIT1(p,i) (p[(i)>>3] & BIT_MASK_TABLE[(i)&7])
CYSFPayload::CYSFPayload() :
m_data(NULL),
m_uplink(NULL),
m_downlink(NULL),
m_source(NULL),
m_dest(NULL),
m_fec()
{
m_data = new unsigned char[90U];
}
CYSFPayload::~CYSFPayload()
{
delete[] m_data;
delete[] m_uplink;
delete[] m_downlink;
delete[] m_source;
delete[] m_dest;
}
void CYSFPayload::decode(const unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char ft, unsigned char dt)
void CYSFPayload::process(unsigned char* bytes, unsigned char fi, unsigned char fn, unsigned char ft, unsigned char dt)
{
assert(bytes != NULL);
::memcpy(m_data, bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES, 90U);
// Header and trailer
if (fi == 0U || fi == 2U) {
decodeHeader();
processHeader(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES);
return;
}
// V/D Mode 1
if (dt == 0U) {
decodeVDMode1(fn);
return;
}
switch (dt) {
case YSF_DT_VD_MODE1:
processVDMode1(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES, fn);
break;
// V/D Mode 2
if (dt == 2U) {
decodeVDMode2(fn);
return;
}
case YSF_DT_VD_MODE2:
processVDMode2(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES, fn);
break;
// Data FR Mode
if (dt == 1U) {
decodeDataFRMode(fn);
return;
}
case YSF_DT_DATA_FR_MODE:
processDataFRMode(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES, fn);
break;
// Voice FR Mode
default: // YSF_DT_VOICE_FR_MODE
processVoiceFRMode(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES);
break;
}
}
void CYSFPayload::encode(unsigned char* bytes)
{
assert(bytes != NULL);
::memcpy(bytes + YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES, m_data, 90U);
}
void CYSFPayload::decodeHeader()
void CYSFPayload::processHeader(unsigned char* data)
{
unsigned char dch[45U];
unsigned char* p1 = m_data;
unsigned char* p1 = data;
unsigned char* p2 = dch;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p2, p1, 9U);
@@ -205,7 +191,7 @@ void CYSFPayload::decodeHeader()
WRITE_BIT1(bytes, n, s1);
}
p1 = m_data;
p1 = data;
p2 = bytes;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p1, p2, 9U);
@@ -244,7 +230,7 @@ void CYSFPayload::decodeHeader()
WRITE_BIT1(bytes, n, s1);
}
p1 = m_data + 9U;
p1 = data + 9U;
p2 = bytes;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p1, p2, 9U);
@@ -252,16 +238,21 @@ void CYSFPayload::decodeHeader()
}
}
void CYSFPayload::decodeVDMode1(unsigned char fn)
void CYSFPayload::processVDMode1(unsigned char* data, unsigned char fn)
{
// Regenerate the AMBE FEC
unsigned int errors = m_fec.regenerateYSF1(m_data);
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) / 235.0F);
unsigned char dch[45U];
unsigned char* p1 = m_data;
unsigned char* p1 = data;
unsigned char* p2 = dch;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p2, p1, 9U);
@@ -356,7 +347,7 @@ void CYSFPayload::decodeVDMode1(unsigned char fn)
WRITE_BIT1(bytes, n, s1);
}
p1 = m_data;
p1 = data;
p2 = bytes;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p1, p2, 9U);
@@ -365,11 +356,11 @@ void CYSFPayload::decodeVDMode1(unsigned char fn)
}
}
void CYSFPayload::decodeVDMode2(unsigned char fn)
void CYSFPayload::processVDMode2(unsigned char* data, unsigned char fn)
{
unsigned char dch[25U];
unsigned char* p1 = m_data;
unsigned char* p1 = data;
unsigned char* p2 = dch;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p2, p1, 5U);
@@ -467,7 +458,7 @@ void CYSFPayload::decodeVDMode2(unsigned char fn)
WRITE_BIT1(bytes, n, s1);
}
p1 = m_data;
p1 = data;
p2 = bytes;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p1, p2, 5U);
@@ -476,11 +467,11 @@ void CYSFPayload::decodeVDMode2(unsigned char fn)
}
}
void CYSFPayload::decodeDataFRMode(unsigned char fn)
void CYSFPayload::processDataFRMode(unsigned char* data, unsigned char fn)
{
unsigned char dch[45U];
unsigned char* p1 = m_data;
unsigned char* p1 = data;
unsigned char* p2 = dch;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p2, p1, 9U);
@@ -559,7 +550,7 @@ void CYSFPayload::decodeDataFRMode(unsigned char fn)
WRITE_BIT1(bytes, n, s1);
}
p1 = m_data;
p1 = data;
p2 = bytes;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p1, p2, 9U);
@@ -567,7 +558,7 @@ void CYSFPayload::decodeDataFRMode(unsigned char fn)
}
}
p1 = m_data + 9U;
p1 = data + 9U;
p2 = dch;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p2, p1, 9U);
@@ -630,7 +621,7 @@ void CYSFPayload::decodeDataFRMode(unsigned char fn)
WRITE_BIT1(bytes, n, s1);
}
p1 = m_data + 9U;
p1 = data + 9U;
p2 = bytes;
for (unsigned int i = 0U; i < 5U; i++) {
::memcpy(p1, p2, 9U);
@@ -639,6 +630,19 @@ void CYSFPayload::decodeDataFRMode(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);
LogMessage("YSF, V Mode 3, AMBE FEC %u/720 (%.1f%%)", errors, float(errors) / 720.0F);
}
void CYSFPayload::setUplink(const std::string& callsign)
{
m_uplink = new unsigned char[10U];