public void checkDecodeSimple()
{
DeltaZigzagEncoding.Decoder d = new DeltaZigzagEncoding.Decoder(0);
checkDecode(d,
new int[] { 0, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 });
}
public void uncompress(int[] inBuf, IntWrapper inPos, int inLen, int[] outBuf, IntWrapper outPos)
{
if (inLen == 0)
{
return;
}
int outLen = inBuf[inPos.get()];
inPos.increment();
DeltaZigzagEncoding.Decoder ctx = new DeltaZigzagEncoding.Decoder(0);
int[] work = new int[BLOCK_LENGTH];
int ip = inPos.get();
int op = outPos.get();
int outPosLast = op + outLen;
for (; op < outPosLast; op += BLOCK_LENGTH)
{
int n = inBuf[ip++];
ip += unpack(inBuf, ip, work, 0, (n >> 24) & 0x3F);
ip += unpack(inBuf, ip, work, 32, (n >> 16) & 0x3F);
ip += unpack(inBuf, ip, work, 64, (n >> 8) & 0x3F);
ip += unpack(inBuf, ip, work, 96, (n >> 0) & 0x3F);
ctx.decodeArray(work, 0, BLOCK_LENGTH, outBuf, op);
}
outPos.add(outLen);
inPos.set(ip);
}
private static void checkDecode(
DeltaZigzagEncoding.Decoder d,
int[] data,
int[] expected)
{
int[] r = d.decodeArray(data);
Assert2.assertArrayEquals(expected, r);
Assert2.assertEquals(r[r.Length - 1], d.getContextValue());
}
public void checkZigzagDecoder()
{
DeltaZigzagEncoding.Decoder d = new DeltaZigzagEncoding.Decoder(0);
Assert2.assertEquals(0, zigzagDecode(d, 0));
Assert2.assertEquals(-1, zigzagDecode(d, 1));
Assert2.assertEquals(1, zigzagDecode(d, 2));
Assert2.assertEquals(-2, zigzagDecode(d, 3));
Assert2.assertEquals(2, zigzagDecode(d, 4));
Assert2.assertEquals(-3, zigzagDecode(d, 5));
}
private static int zigzagDecode(DeltaZigzagEncoding.Decoder d, int value)
{
d.setContextValue(0);
return(d.decodeInt(value));
}
