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Refactor the Golay 24,12,8 code and its uses.

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This commit is contained in:
Jonathan Naylor
2021-04-07 19:56:28 +01:00
parent 8dc54ed21f
commit ffb4bdb042
6 changed files with 43 additions and 32 deletions
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26
AMBEFEC.cpp
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@@ -793,22 +793,25 @@ unsigned int CAMBEFEC::regenerateIMBE(unsigned char* bytes) const
unsigned int CAMBEFEC::regenerateDStar(unsigned int& a, unsigned int& b) const
{
bool valid;
unsigned int orig_a = a;
unsigned int orig_b = b;
unsigned int data = CGolay24128::decode24128(a, valid);
a = CGolay24128::encode24128(data);
unsigned int data;
bool valid1 = CGolay24128::decode24128(a, data);
if (!valid1)
return 10U;
// The PRNG
unsigned int p = PRNG_TABLE[data];
b ^= p;
unsigned int datb = CGolay24128::decode24128(b, valid);
unsigned int datb;
bool valid2 = CGolay24128::decode24128(b, datb);
if (!valid2)
return 10U;
a = CGolay24128::encode24128(data);
b = CGolay24128::encode24128(datb);
b ^= p;
@@ -824,12 +827,17 @@ unsigned int CAMBEFEC::regenerateDStar(unsigned int& a, unsigned int& b) const
unsigned int CAMBEFEC::regenerateDMR(unsigned int& a, unsigned int& b, unsigned int& c) const
{
bool valid;
unsigned int orig_a = a;
unsigned int orig_b = b;
unsigned int data = CGolay24128::decode24128(a, valid);
unsigned int data;
bool valid = CGolay24128::decode24128(a, data);
if (!valid) {
a = 0xF00292U;
b = 0x0E0B20U;
c = 0x000000U;
return 10U; // An invalid A block gives an error count of 10
}
a = CGolay24128::encode24128(data);