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/*
* DifferentialDecoder.cpp
*
* Created on: 25/01/2017
* Author: Lucas Teske
* Modified by Aang23
*/
#include "nrzs.h"
namespace diff
{
void NRZSDiff::decode(uint8_t *data, int length)
{
uint8_t mask;
for (int i = 0; i < length; i++)
{
mask = ((data[i] >> 1) & 0x7F) | (lastBit << 7);
lastBit = data[i] & 1;
data[i] ^= 0xFF - mask;
}
}
void NRZSDiff::decode_bits(uint8_t *data, int length)
{
uint8_t currentBit = 0;
for (int i = 0; i < length; i++)
{
currentBit = data[i];
data[i] = !(currentBit ^ lastBit);
lastBit = currentBit;
}
}
void nrzs_decode(uint8_t *data, int length)
{
uint8_t mask, lastBit = 0;
for (int i = 0; i < length; i++)
{
mask = ((data[i] >> 1) & 0x7F) | (lastBit << 7);
lastBit = data[i] & 1;
data[i] ^= 0xFF - mask;
}
}
} // namespace diff
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