39 lines
1.3 KiB
C#
39 lines
1.3 KiB
C#
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using DotNetty.Buffers;
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namespace fec
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{
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public class ByteBufCodingLoopBase : ByteBufCodingLoop
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{
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public virtual void codeSomeShards(byte[][] matrixRows, IByteBuffer[] inputs, int inputCount,
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IByteBuffer[] outputs, int outputCount,
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int offset, int byteCount)
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{
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}
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public virtual bool checkSomeShards(byte[][] matrixRows, IByteBuffer[] inputs, int inputCount, byte[][] toCheck,
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int checkCount,
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int offset, int byteCount, byte[] tempBuffer)
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{
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byte[][] table = Galois.MULTIPLICATION_TABLE;
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for (int iByte = offset; iByte < offset + byteCount; iByte++)
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{
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for (int iOutput = 0; iOutput < checkCount; iOutput++)
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{
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byte[] matrixRow = matrixRows[iOutput];
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int value = 0;
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for (int iInput = 0; iInput < inputCount; iInput++)
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{
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value ^= table[matrixRow[iInput] & 0xFF][inputs[iInput].GetByte(iByte) & 0xFF];
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}
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if (toCheck[iOutput][iByte] != (byte) value)
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{
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return false;
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}
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}
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}
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return true;
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}
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}
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}
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