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Beginnings of System Fusion payload regeneration.

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This commit is contained in:
Jonathan Naylor
2016-02-28 20:34:37 +00:00
parent bea76da41f
commit 2cce91e94f
12 changed files with 482 additions and 19 deletions
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11
YSFConvolution.cpp
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@@ -40,7 +40,7 @@ m_dp(NULL)
{
m_metrics1 = new uint16_t[16U];
m_metrics2 = new uint16_t[16U];
m_decisions = new uint64_t[360U];
m_decisions = new uint64_t[180U];
}
CYSFConvolution::~CYSFConvolution()
@@ -89,26 +89,27 @@ void CYSFConvolution::decode(uint8_t s0, uint8_t s1)
++m_dp;
assert((m_dp - m_decisions) <= 180U);
uint16_t* tmp = m_oldMetrics;
m_oldMetrics = m_newMetrics;
m_newMetrics = tmp;
}
void CYSFConvolution::chainback(unsigned char* out)
void CYSFConvolution::chainback(unsigned char* out, unsigned int nBits)
{
assert(out != NULL);
uint32_t state = 0U;
uint8_t nbits = 96U;
while (nbits-- > 0) {
while (nBits-- > 0) {
--m_dp;
uint32_t i = state >> (9 - K);
uint8_t bit = uint8_t(*m_dp >> i) & 1;
state = (bit << 7) | (state >> 1);
WRITE_BIT1(out, nbits, bit != 0U);
WRITE_BIT1(out, nBits, bit != 0U);
}
}