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Version 0.9.2

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- fixed a bug in calculateChecksum16, previous versions should not be
used!
This commit is contained in:
Nikolaj Schlej 2013-11-18 20:11:22 +01:00
parent a6fc781306
commit 83f1158933
4 changed files with 25 additions and 73 deletions
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20
ffs.cpp
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@ -22,20 +22,28 @@ UINT8 calculateChecksum8(UINT8* buffer, UINT32 bufferSize)
return 0;
UINT8 counter = 0;
while(bufferSize--)
counter += buffer[bufferSize];
return ~counter + 1;
return (UINT8) 0x100 - counter;
}
UINT16 calculateChecksum16(UINT8* buffer, UINT32 bufferSize)
UINT16 calculateChecksum16(UINT16* buffer, UINT32 bufferSize)
{
if(!buffer)
return 0;
UINT16 counter = 0;
while(bufferSize--)
counter += buffer[bufferSize];
return ~counter + 1;
UINT32 index = 0;
bufferSize /= sizeof(UINT16);
for (; index < bufferSize; index++) {
counter = (UINT16) (counter + buffer[index]);
}
return (UINT16) 0x10000 - counter;
}
VOID uint32ToUint24(UINT32 size, UINT8* ffsSize)