From a8b6213c0cff665947aa995860562ddc993dd935 Mon Sep 17 00:00:00 2001 From: Travis Nickles Date: Mon, 5 Mar 2018 02:25:39 -0600 Subject: [PATCH] Minor tweak for CRC32 method --- DS4Windows/DS4Library/Crc32.cs | 62 +++++++++++++++++----------------- 1 file changed, 31 insertions(+), 31 deletions(-) diff --git a/DS4Windows/DS4Library/Crc32.cs b/DS4Windows/DS4Library/Crc32.cs index 14d10ea..55c5511 100644 --- a/DS4Windows/DS4Library/Crc32.cs +++ b/DS4Windows/DS4Library/Crc32.cs @@ -327,39 +327,39 @@ namespace DS4Windows bufsize -= 16; } - while (bufsize >= 8) + //while (bufsize >= 8) //if (bufsize >= 8) - { - uint one = (buffer[i++] | - (uint)(buffer[i++] << 8) | - (uint)(buffer[i++] << 16) | - (uint)(buffer[i++] << 24)) ^ crc; - uint two = buffer[i++] | - (uint)(buffer[i++] << 8) | - (uint)(buffer[i++] << 16) | - (uint)(buffer[i++] << 24); - crc = secondLook[7, one & 0xFF] ^ - secondLook[6, (one >> 8) & 0xFF] ^ - secondLook[5, (one >> 16) & 0xFF] ^ - secondLook[4, one >> 24] ^ - secondLook[3, two & 0xFF] ^ - secondLook[2, (two >> 8) & 0xFF] ^ - secondLook[1, (two >> 16) & 0xFF] ^ - defaultTable[two >> 24]; - bufsize -= 8; - /*crc ^= buffer[i++] | - (uint)(buffer[i++] << 8) | - (uint)(buffer[i++] << 16) | - (uint)(buffer[i++] << 24);// i = i + 4; - //crc ^= buffer[i]; - crc = secondLook[3, (crc & 0xFF)] ^ - secondLook[2, ((crc >> 8) & 0xFF)] ^ - secondLook[1, ((crc >> 16) & 0xFF)] ^ - defaultTable[crc >> 24]; - bufsize -= 4; - */ - } + uint one8 = (buffer[i++] | + (uint)(buffer[i++] << 8) | + (uint)(buffer[i++] << 16) | + (uint)(buffer[i++] << 24)) ^ crc; + uint two8 = buffer[i++] | + (uint)(buffer[i++] << 8) | + (uint)(buffer[i++] << 16) | + (uint)(buffer[i++] << 24); + crc = secondLook[7, one8 & 0xFF] ^ + secondLook[6, (one8 >> 8) & 0xFF] ^ + secondLook[5, (one8 >> 16) & 0xFF] ^ + secondLook[4, one8 >> 24] ^ + secondLook[3, two8 & 0xFF] ^ + secondLook[2, (two8 >> 8) & 0xFF] ^ + secondLook[1, (two8 >> 16) & 0xFF] ^ + defaultTable[two8 >> 24]; + + bufsize -= 8; + /*crc ^= buffer[i++] | + (uint)(buffer[i++] << 8) | + (uint)(buffer[i++] << 16) | + (uint)(buffer[i++] << 24);// i = i + 4; + //crc ^= buffer[i]; + crc = secondLook[3, (crc & 0xFF)] ^ + secondLook[2, ((crc >> 8) & 0xFF)] ^ + secondLook[1, ((crc >> 16) & 0xFF)] ^ + defaultTable[crc >> 24]; + bufsize -= 4; + */ + while (--bufsize >= 0) {