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Minor fixes.

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This commit is contained in:
Jonathan Naylor 2016-04-19 08:06:36 +01:00
parent 38dc134982
commit 929877f3cf
1 changed files with 10 additions and 8 deletions
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18
AMBEFEC.cpp
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@ -20,6 +20,8 @@
#include "Hamming.h"
#include "AMBEFEC.h"
#include "Log.h"
#include <cstdio>
#include <cassert>
@ -630,14 +632,14 @@ unsigned int CAMBEFEC::regenerateYSF3(unsigned char* bytes) const
//
// 7 voice bits 137
// De-Whiten some bits
// De-whiten some bits
unsigned int prn = 0x00U;
for (int i = 0U; i < 12U; i++)
prn = (prn << 1) | (temp[i] & 1);
for (unsigned int i = 0U; i < 12U; i++)
prn = (prn << 1) | (temp[i] ? 0x01U : 0x00U);
prn <<= 4;
for (unsigned int i = 23U; i < 137U; i++) {
prn = (unsigned short)((173 * prn) + 13849);
temp[i] ^= (prn >> 15) & 1;
prn = (unsigned short)((173U * prn) + 13849U);
temp[i] ^= (prn & 0x80U) == 0x80U;
}
// Check/Fix FEC
@ -705,11 +707,11 @@ unsigned int CAMBEFEC::regenerateYSF3(unsigned char* bytes) const
// Whiten some bits
prn = 0x00U;
for (unsigned int i = 0U; i < 12U; i++)
prn = (prn << 1) | (temp[i] & 1);
prn = (prn << 1) | (temp[i] ? 0x01U : 0x00U);
prn <<= 4;
for (unsigned int i = 23U; i < 137U; i++) {
prn = (unsigned short)((173 * prn) + 13849);
temp[i] ^= (prn >> 15) & 1;
prn = (unsigned short)((173U * prn) + 13849U);
temp[i] ^= (prn & 0x80U) == 0x80U;
}
// Interleave