private function encodeTest($type, $data, $ecWords)
{
$field = GenericGF::getInstance($type);
$encoder = new ReedSolomonEncoder($field);
$messageExpected = array_merge($data, $ecWords);
$paddedData = array_pad($data, count($data) + count($ecWords), 0);
$result = $encoder->encode($data, count($ecWords));
$this->assertEquals($messageExpected, $result);
$resultPadded = $encoder->encodePadded($paddedData, count($ecWords));
$this->assertEquals($messageExpected, $resultPadded);
}
public static function generateCheckWords(BitArray $stuffedBits, $totalSymbolBits, $wordSize)
{
$messageSizeInWords = intval(($stuffedBits->getLength() + $wordSize - 1) / $wordSize);
for ($i = $messageSizeInWords * $wordSize - $stuffedBits->getLength(); $i > 0; $i--) {
$stuffedBits->append(1);
}
$totalSizeInFullWords = intval($totalSymbolBits / $wordSize);
$messageWords = self::bitsToWords($stuffedBits, $wordSize, $totalSizeInFullWords);
$rs = new ReedSolomonEncoder(self::getGF($wordSize));
$messageWords = $rs->encodePadded($messageWords, $totalSizeInFullWords - $messageSizeInWords);
$startPad = $totalSymbolBits % $wordSize;
$messageBits = new BitArray();
$messageBits->append(0, $startPad);
foreach ($messageWords as $messageWord) {
$messageBits->append($messageWord, $wordSize);
}
return $messageBits;
}
