public void uncompress(sbyte[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
int p = inpos.get();
int finalp = inpos.get() + inlength;
int tmpoutpos = outpos.get();
for (int v = 0; p < finalp; @out[tmpoutpos++] = v)
{
v = @in[p] & 0x7F;
if (@in[p] < 0)
{
p += 1;
continue;
}
v = ((@in[p + 1] & 0x7F) << 7) | v;
if (@in[p + 1] < 0)
{
p += 2;
continue;
}
v = ((@in[p + 2] & 0x7F) << 14) | v;
if (@in[p + 2] < 0)
{
p += 3;
continue;
}
v = ((@in[p + 3] & 0x7F) << 21) | v;
if (@in[p + 3] < 0)
{
p += 4;
continue;
}
v = ((@in[p + 4] & 0x7F) << 28) | v;
p += 5;
}
outpos.set(tmpoutpos);
inpos.add(p);
}
private void decodePage(int[] @in, IntWrapper inpos, int[] @out, IntWrapper outpos, int thissize)
{
int initpos = inpos.get();
int wheremeta = @in[inpos.get()];
inpos.increment();
int inexcept = initpos + wheremeta;
int bytesize = @in[inexcept++];
byteContainer.clear();
//byteContainer.asIntBuffer().put(@in, inexcept, (bytesize + 3) / 4); //Port note: I've collapsed the code here
byteContainer.put(@in, inexcept, (bytesize + 3) / 4);
byteContainer._ms.Position = 0;
inexcept += (bytesize + 3) / 4;
int bitmap = @in[inexcept++];
for (int k = 2; k <= 32; ++k)
{
if ((bitmap & (1 << (k - 1))) != 0)
{
int size = @in[inexcept++];
int roundedup = Util
.greatestMultiple(size + 31, 32);
if (dataTobePacked[k].Length < roundedup)
{
dataTobePacked[k] = new int[roundedup];
}
if (inexcept + roundedup / 32 * k <= @in.Length)
{
int j = 0;
for (; j < size; j += 32)
{
BitPacking.fastunpack(@in, inexcept,
dataTobePacked[k], j, k);
inexcept += k;
}
int overflow = j - size;
inexcept -= overflow * k / 32;
}
else
{
int j = 0;
int[] buf = new int[roundedup / 32 * k];
int initinexcept = inexcept;
Array.Copy(@in, inexcept, buf, 0, @in.Length - inexcept);
for (; j < size; j += 32)
{
BitPacking.fastunpack(buf, inexcept - initinexcept,
dataTobePacked[k], j, k);
inexcept += k;
}
int overflow = j - size;
inexcept -= overflow * k / 32;
}
}
}
Arrays.fill(dataPointers, 0);
int tmpoutpos = outpos.get();
int tmpinpos = inpos.get();
for (int run = 0, run_end = thissize / BLOCK_SIZE; run < run_end; ++run, tmpoutpos += BLOCK_SIZE)
{
int b = byteContainer.get();
int cexcept = byteContainer.get() & 0xFF;
for (int k = 0; k < BLOCK_SIZE; k += 32)
{
BitPacking.fastunpack(@in, tmpinpos, @out,
tmpoutpos + k, b);
tmpinpos += b;
}
if (cexcept > 0)
{
int maxbits = byteContainer.get();
int index = maxbits - b;
if (index == 1)
{
for (int k = 0; k < cexcept; ++k)
{
int pos = byteContainer.get() & 0xFF;
@out[pos + tmpoutpos] |= 1 << b;
}
}
else
{
for (int k = 0; k < cexcept; ++k)
{
int pos = byteContainer.get() & 0xFF;
int exceptvalue = dataTobePacked[index][dataPointers[index]++];
@out[pos + tmpoutpos] |= exceptvalue << b;
}
}
}
}
outpos.set(tmpoutpos);
inpos.set(inexcept);
}
/**
* Uncompress data in blocks of integers. In this particular case,
* the inlength parameter is ignored: it is deduced from the compressed
* data.
*
* @see IntegerCODEC#compress(int[], IntWrapper, int, int[], IntWrapper)
*/
public void headlessUncompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos, int mynvalue)
{
mynvalue = Util.greatestMultiple(mynvalue, BLOCK_SIZE);
int finalout = outpos.get() + mynvalue;
while (outpos.get() != finalout)
{
int thissize = Math.Min(pageSize,
finalout - outpos.get());
decodePage(@in, inpos, @out, outpos, thissize);
}
}
private void encodePage(int[] @in, IntWrapper inpos, int thissize, int[] @out, IntWrapper outpos)
{
int headerpos = outpos.get();
outpos.increment();
int tmpoutpos = outpos.get();
// Clear working area.
Arrays.fill(dataPointers, 0);
byteContainer.clear();
int tmpinpos = inpos.get();
for (int finalinpos = tmpinpos + thissize - BLOCK_SIZE; tmpinpos <= finalinpos; tmpinpos += BLOCK_SIZE)
{
getBestBFromData(@in, tmpinpos);
int tmpbestb = bestbbestcexceptmaxb[0];
byteContainer.put((sbyte)bestbbestcexceptmaxb[0]);
byteContainer.put((sbyte)bestbbestcexceptmaxb[1]);
if (bestbbestcexceptmaxb[1] > 0)
{
byteContainer.put((sbyte)bestbbestcexceptmaxb[2]);
int index = bestbbestcexceptmaxb[2]
- bestbbestcexceptmaxb[0];
if (dataPointers[index]
+ bestbbestcexceptmaxb[1] >= dataTobePacked[index].Length)
{
int newsize = 2 * (dataPointers[index] + bestbbestcexceptmaxb[1]);
// make sure it is a multiple of 32
newsize = Util.greatestMultiple(newsize + 31, 32);
dataTobePacked[index] = Arrays.copyOf(dataTobePacked[index], newsize);
}
for (int k = 0; k < BLOCK_SIZE; ++k)
{
if ((int)((uint)@in[k + tmpinpos] >> bestbbestcexceptmaxb[0]) != 0)
{
// we have an exception
byteContainer.put((sbyte)k);
dataTobePacked[index][dataPointers[index]++] = (int)((uint)@in[k + tmpinpos] >> tmpbestb);
}
}
}
for (int k = 0; k < BLOCK_SIZE; k += 32)
{
BitPacking.fastpack(@in, tmpinpos + k, @out,
tmpoutpos, tmpbestb);
tmpoutpos += tmpbestb;
}
}
inpos.set(tmpinpos);
@out[headerpos] = tmpoutpos - headerpos;
int bytesize = byteContainer.position();
while ((byteContainer.position() & 3) != 0)
{
byteContainer.put((sbyte)0);
}
@out[tmpoutpos++] = bytesize;
int howmanyints = byteContainer.position() / 4;
byteContainer.flip();
byteContainer.asIntBuffer().get(@out, tmpoutpos, howmanyints);
tmpoutpos += howmanyints;
int bitmap = 0;
for (int k = 2; k <= 32; ++k)
{
if (dataPointers[k] != 0)
{
bitmap |= (1 << (k - 1));
}
}
@out[tmpoutpos++] = bitmap;
for (int k = 2; k <= 32; ++k)
{
if (dataPointers[k] != 0)
{
@out[tmpoutpos++] = dataPointers[k];// size
int j = 0;
for (; j < dataPointers[k]; j += 32)
{
BitPacking.fastpack(dataTobePacked[k],
j, @out, tmpoutpos, k);
tmpoutpos += k;
}
int overflow = j - dataPointers[k];
tmpoutpos -= overflow * k / 32;
}
}
outpos.set(tmpoutpos);
}
public void headlessCompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
int tmpoutpos = outpos.get();
int currentPos = inpos.get();
int finalin = currentPos + inlength;
outer:
while (currentPos < finalin - 28)
{
int selector = 0;
mainloop:
for (; selector < 8;)
{
int res = 0;
int compressedNum = codeNum[selector];
int b = bitLength[selector];
int max = 1 << b;
int i = 0;
for (; i < compressedNum; i++)
{
if (max <= @in[currentPos + i])
{
selector++;
goto mainloop;
}
res = (res << b) + @in[currentPos + i];
}
res |= selector << 28;
@out[tmpoutpos++] = res;
currentPos += compressedNum;
goto outer;
}
const int selector2 = 8;
if (@in[currentPos] >= 1 << bitLength[selector2])
{
throw new Exception("Too big a number");
}
@out[tmpoutpos++] = @in[currentPos++] | (selector2 << 28);
}
outer2:
while (currentPos < finalin)
{
int selector3 = 0;
mainloop:
for (; selector3 < 8;)
{
int res = 0;
int compressedNum = codeNum[selector3];
if (finalin <= currentPos + compressedNum - 1)
{
compressedNum = finalin - currentPos;
}
int b = bitLength[selector3];
int max = 1 << b;
int i = 0;
for (; i < compressedNum; i++)
{
if (max <= @in[currentPos + i])
{
selector3++;
goto mainloop;
}
res = (res << b) + @in[currentPos + i];
}
if (compressedNum != codeNum[selector3])
{
res <<= (codeNum[selector3] - compressedNum)
* b;
}
res |= selector3 << 28;
@out[tmpoutpos++] = res;
currentPos += compressedNum;
goto outer2;
}
const int selector4 = 8;
if (@in[currentPos] >= 1 << bitLength[selector4])
{
throw new Exception("Too big a number");
}
@out[tmpoutpos++] = @in[currentPos++] | (selector4 << 28);
}
inpos.set(currentPos);
outpos.set(tmpoutpos);
}
public void headlessUncompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos, int outlength)
{
int currentPos = outpos.get();
int tmpinpos = inpos.get();
int finalout = currentPos + outlength;
while (currentPos < finalout - 28)
{
int val = @in[tmpinpos++];
int header = (int)((uint)val >> 28);
switch (header)
{
case 0:
{ // number : 28, bitwidth : 1
@out[currentPos++] = (int)((uint)(val << 4) >> 31);
@out[currentPos++] = (int)((uint)(val << 5) >> 31);
@out[currentPos++] = (int)((uint)(val << 6) >> 31);
@out[currentPos++] = (int)((uint)(val << 7) >> 31);
@out[currentPos++] = (int)((uint)(val << 8) >> 31);
@out[currentPos++] = (int)((uint)(val << 9) >> 31);
@out[currentPos++] = (int)((uint)(val << 10) >> 31);
@out[currentPos++] = (int)((uint)(val << 11) >> 31);
@out[currentPos++] = (int)((uint)(val << 12) >> 31);
@out[currentPos++] = (int)((uint)(val << 13) >> 31); // 10
@out[currentPos++] = (int)((uint)(val << 14) >> 31);
@out[currentPos++] = (int)((uint)(val << 15) >> 31);
@out[currentPos++] = (int)((uint)(val << 16) >> 31);
@out[currentPos++] = (int)((uint)(val << 17) >> 31);
@out[currentPos++] = (int)((uint)(val << 18) >> 31);
@out[currentPos++] = (int)((uint)(val << 19) >> 31);
@out[currentPos++] = (int)((uint)(val << 20) >> 31);
@out[currentPos++] = (int)((uint)(val << 21) >> 31);
@out[currentPos++] = (int)((uint)(val << 22) >> 31);
@out[currentPos++] = (int)((uint)(val << 23) >> 31); // 20
@out[currentPos++] = (int)((uint)(val << 24) >> 31);
@out[currentPos++] = (int)((uint)(val << 25) >> 31);
@out[currentPos++] = (int)((uint)(val << 26) >> 31);
@out[currentPos++] = (int)((uint)(val << 27) >> 31);
@out[currentPos++] = (int)((uint)(val << 28) >> 31);
@out[currentPos++] = (int)((uint)(val << 29) >> 31);
@out[currentPos++] = (int)((uint)(val << 30) >> 31);
@out[currentPos++] = (int)((uint)(val << 31) >> 31);
break;
}
case 1:
{ // number : 14, bitwidth : 2
@out[currentPos++] = (int)((uint)(val << 4) >> 30);
@out[currentPos++] = (int)((uint)(val << 6) >> 30);
@out[currentPos++] = (int)((uint)(val << 8) >> 30);
@out[currentPos++] = (int)((uint)(val << 10) >> 30);
@out[currentPos++] = (int)((uint)(val << 12) >> 30);
@out[currentPos++] = (int)((uint)(val << 14) >> 30);
@out[currentPos++] = (int)((uint)(val << 16) >> 30);
@out[currentPos++] = (int)((uint)(val << 18) >> 30);
@out[currentPos++] = (int)((uint)(val << 20) >> 30);
@out[currentPos++] = (int)((uint)(val << 22) >> 30); // 10
@out[currentPos++] = (int)((uint)(val << 24) >> 30);
@out[currentPos++] = (int)((uint)(val << 26) >> 30);
@out[currentPos++] = (int)((uint)(val << 28) >> 30);
@out[currentPos++] = (int)((uint)(val << 30) >> 30);
break;
}
case 2:
{ // number : 9, bitwidth : 3
@out[currentPos++] = (int)((uint)(val << 5) >> 29);
@out[currentPos++] = (int)((uint)(val << 8) >> 29);
@out[currentPos++] = (int)((uint)(val << 11) >> 29);
@out[currentPos++] = (int)((uint)(val << 14) >> 29);
@out[currentPos++] = (int)((uint)(val << 17) >> 29);
@out[currentPos++] = (int)((uint)(val << 20) >> 29);
@out[currentPos++] = (int)((uint)(val << 23) >> 29);
@out[currentPos++] = (int)((uint)(val << 26) >> 29);
@out[currentPos++] = (int)((uint)(val << 29) >> 29);
break;
}
case 3:
{ // number : 7, bitwidth : 4
@out[currentPos++] = (int)((uint)(val << 4) >> 28);
@out[currentPos++] = (int)((uint)(val << 8) >> 28);
@out[currentPos++] = (int)((uint)(val << 12) >> 28);
@out[currentPos++] = (int)((uint)(val << 16) >> 28);
@out[currentPos++] = (int)((uint)(val << 20) >> 28);
@out[currentPos++] = (int)((uint)(val << 24) >> 28);
@out[currentPos++] = (int)((uint)(val << 28) >> 28);
break;
}
case 4:
{ // number : 5, bitwidth : 5
@out[currentPos++] = (int)((uint)(val << 7) >> 27);
@out[currentPos++] = (int)((uint)(val << 12) >> 27);
@out[currentPos++] = (int)((uint)(val << 17) >> 27);
@out[currentPos++] = (int)((uint)(val << 22) >> 27);
@out[currentPos++] = (int)((uint)(val << 27) >> 27);
break;
}
case 5:
{ // number : 4, bitwidth : 7
@out[currentPos++] = (int)((uint)(val << 4) >> 25);
@out[currentPos++] = (int)((uint)(val << 11) >> 25);
@out[currentPos++] = (int)((uint)(val << 18) >> 25);
@out[currentPos++] = (int)((uint)(val << 25) >> 25);
break;
}
case 6:
{ // number : 3, bitwidth : 9
@out[currentPos++] = (int)((uint)(val << 5) >> 23);
@out[currentPos++] = (int)((uint)(val << 14) >> 23);
@out[currentPos++] = (int)((uint)(val << 23) >> 23);
break;
}
case 7:
{ // number : 2, bitwidth : 14
@out[currentPos++] = (int)((uint)(val << 4) >> 18);
@out[currentPos++] = (int)((uint)(val << 18) >> 18);
break;
}
case 8:
{ // number : 1, bitwidth : 28
@out[currentPos++] = (int)((uint)(val << 4) >> 4);
break;
}
default:
{
throw new Exception("shouldn't happen: limited to 28-bit integers");
}
}
}
while (currentPos < finalout)
{
int val = @in[tmpinpos++];
int header = (int)((uint)val >> 28);
switch (header)
{
case 0:
{ // number : 28, bitwidth : 1
int howmany = finalout - currentPos;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (k + 4)) >> 31);
}
break;
}
case 1:
{ // number : 14, bitwidth : 2
int howmany = finalout - currentPos < 14 ? finalout - currentPos : 14;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (2 * k + 4)) >> 30);
}
break;
}
case 2:
{ // number : 9, bitwidth : 3
int howmany = finalout - currentPos < 9 ? finalout - currentPos : 9;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (3 * k + 5)) >> 29);
}
break;
}
case 3:
{ // number : 7, bitwidth : 4
int howmany = finalout - currentPos < 7 ? finalout - currentPos : 7;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (4 * k + 4)) >> 28);
}
break;
}
case 4:
{ // number : 5, bitwidth : 5
int howmany = finalout - currentPos < 5 ? finalout - currentPos : 5;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (5 * k + 7)) >> 27);
}
break;
}
case 5:
{ // number : 4, bitwidth : 7
int howmany = finalout - currentPos < 4 ? finalout - currentPos : 4;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (7 * k + 4)) >> 25);
}
break;
}
case 6:
{ // number : 3, bitwidth : 9
int howmany = finalout - currentPos < 3 ? finalout - currentPos : 3;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (9 * k + 5)) >> 23);
}
break;
}
case 7:
{ // number : 2, bitwidth : 14
int howmany = finalout - currentPos < 2 ? finalout - currentPos : 2;
for (int k = 0; k < howmany; ++k)
{
@out[currentPos++] = (int)((uint)(val << (14 * k + 4)) >> 18);
}
break;
}
case 8:
{ // number : 1, bitwidth : 28
@out[currentPos++] = (int)((uint)(val << 4) >> 4);
break;
}
default:
{
throw new Exception("shouldn't happen");
}
}
}
outpos.set(currentPos);
inpos.set(tmpinpos);
}
public void uncompress(int[] inBuf, IntWrapper inPos, int inLen, int[] outBuf, IntWrapper outPos)
{
DeltaZigzagEncoding.Decoder ctx = new DeltaZigzagEncoding.Decoder(0);
int ip = inPos.get();
int op = outPos.get();
int vbcNum = 0, vbcShift = 24; // Varialbe Byte Context.
int inPosLast = ip + inLen;
while (ip < inPosLast)
{
// Fetch a byte value.
int n = (int)((uint)inBuf[ip] >> vbcShift) & 0xFF;
if (vbcShift > 0)
{
vbcShift -= 8;
}
else
{
vbcShift = 24;
ip++;
}
// Decode variable byte and delta+zigzag.
vbcNum = (vbcNum << 7) + (n & 0x7F);
if ((n & 0x80) == 0)
{
outBuf[op++] = ctx.decodeInt(vbcNum);
vbcNum = 0;
}
}
outPos.set(op);
inPos.set(inPosLast);
}
public void uncompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
int s = 0;
int val = 0;
int p = inpos.get();
int finalp = inpos.get() + inlength;
int tmpoutpos = outpos.get();
for (int v = 0, shift = 0; p < finalp;)
{
val = @in[p];
int c = (sbyte)(int)((uint)val >> s);
s += 8;
p += s >> 5;
s = s & 31;
v += ((c & 127) << shift);
if ((c & 128) == 128)
{
@out[tmpoutpos++] = v;
v = 0;
shift = 0;
}
else
{
shift += 7;
}
}
outpos.set(tmpoutpos);
inpos.add(inlength);
}
public void headlessCompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
int i_inpos = inpos.get();
int i_outpos = outpos.get();
int finalin = i_inpos + inlength;
while (i_inpos < finalin)
{
int inoffset = compressblock(@out, i_outpos++, @in, i_inpos, inlength);
if (inoffset == -1)
{
throw new Exception("Too big a number");
}
i_inpos += inoffset;
inlength -= inoffset;
}
inpos.set(i_inpos);
outpos.set(i_outpos);
}
public void headlessUncompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos, int num)
{
int i_inpos = inpos.get();
int i_outpos = outpos.get();
while (num > 0)
{
int howmany = decompressblock(@out, i_outpos, @in, i_inpos, num);
num -= howmany;
i_outpos += howmany;
i_inpos++;
}
inpos.set(i_inpos);
outpos.set(i_outpos);
}
public void compress(int[] @in, IntWrapper inpos, int inlength, sbyte[] @out, IntWrapper outpos)
{
if (inlength == 0)
{
return;
}
int outpostmp = outpos.get();
for (int k = inpos.get(); k < inpos.get() + inlength; ++k)
{
long val = @in[k] & 0xFFFFFFFFL; // To be consistent with
// unsigned integers in C/C++
if (val < (1 << 7))
{
@out[outpostmp++] = (sbyte)(val | (1 << 7));
}
else if (val < (1 << 14))
{
@out[outpostmp++] = (sbyte)extract7bits(0, val);
@out[outpostmp++] = (sbyte)(extract7bitsmaskless(1, (val)) | (1 << 7));
}
else if (val < (1 << 21))
{
@out[outpostmp++] = (sbyte)extract7bits(0, val);
@out[outpostmp++] = (sbyte)extract7bits(1, val);
@out[outpostmp++] = (sbyte)(extract7bitsmaskless(2, (val)) | (1 << 7));
}
else if (val < (1 << 28))
{
@out[outpostmp++] = (sbyte)extract7bits(0, val);
@out[outpostmp++] = (sbyte)extract7bits(1, val);
@out[outpostmp++] = (sbyte)extract7bits(2, val);
@out[outpostmp++] = (sbyte)(extract7bitsmaskless(3, (val)) | (1 << 7));
}
else
{
@out[outpostmp++] = (sbyte)extract7bits(0, val);
@out[outpostmp++] = (sbyte)extract7bits(1, val);
@out[outpostmp++] = (sbyte)extract7bits(2, val);
@out[outpostmp++] = (sbyte)extract7bits(3, val);
@out[outpostmp++] = (sbyte)(extract7bitsmaskless(4, (val)) | (1 << 7));
}
}
outpos.set(outpostmp);
inpos.add(inlength);
}
public void headlessCompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
if (inlength == 0)
{
return;
}
ByteBuffer buf = ByteBuffer.allocateDirect(inlength * 8);
buf.order(ByteOrder.LITTLE_ENDIAN);
for (int k = inpos.get(); k < inpos.get() + inlength; ++k)
{
long val = @in[k] & 0xFFFFFFFFL; // To be consistent with
// unsigned integers in C/C++
if (val < (1 << 7))
{
buf.put((sbyte)(val | (1 << 7)));
}
else if (val < (1 << 14))
{
buf.put((sbyte)extract7bits(0, val));
buf.put((sbyte)(extract7bitsmaskless(1, (val)) | (1 << 7)));
}
else if (val < (1 << 21))
{
buf.put((sbyte)extract7bits(0, val));
buf.put((sbyte)extract7bits(1, val));
buf.put((sbyte)(extract7bitsmaskless(2, (val)) | (1 << 7)));
}
else if (val < (1 << 28))
{
buf.put((sbyte)extract7bits(0, val));
buf.put((sbyte)extract7bits(1, val));
buf.put((sbyte)extract7bits(2, val));
buf.put((sbyte)(extract7bitsmaskless(3, (val)) | (1 << 7)));
}
else
{
buf.put((sbyte)extract7bits(0, val));
buf.put((sbyte)extract7bits(1, val));
buf.put((sbyte)extract7bits(2, val));
buf.put((sbyte)extract7bits(3, val));
buf.put((sbyte)(extract7bitsmaskless(4, (val)) | (1 << 7)));
}
}
while (buf.position() % 4 != 0)
{
buf.put((sbyte)0);
}
int length = buf.position();
buf.flip();
IntBuffer ibuf = buf.asIntBuffer();
ibuf.get(@out, outpos.get(), length / 4);
outpos.add(length / 4);
inpos.add(inlength);
}
public void compress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
headlessCompress(@in, inpos, inlength, @out, outpos);
}
public void headlessUncompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos, int num)
{
int s = 0;
int val = 0;
int p = inpos.get();
int tmpoutpos = outpos.get();
int finaloutpos = num + tmpoutpos;
for (int v = 0, shift = 0; tmpoutpos < finaloutpos;)
{
val = @in[p];
int c = (int)((uint)val >> s);
s += 8;
p += s >> 5;
s = s & 31;
v += ((c & 127) << shift);
if ((c & 128) == 128)
{
@out[tmpoutpos++] = v;
v = 0;
shift = 0;
}
else
{
shift += 7;
}
}
outpos.set(tmpoutpos);
inpos.set(p + (s != 0 ? 1 : 0));
}
public void uncompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
if (inlength == 0)
{
return;
}
int outlength = @in[inpos.get()];
inpos.increment();
headlessUncompress(@in, inpos, inlength, @out, outpos, outlength);
}
public void compress(int[] inBuf, IntWrapper inPos, int inLen, int[] outBuf, IntWrapper outPos)
{
if (inLen == 0)
{
return;
}
ByteBuffer byteBuf = ByteBuffer.allocateDirect(inLen * 5 + 3);
DeltaZigzagEncoding.Encoder ctx = new DeltaZigzagEncoding.Encoder(0);
// Delta+Zigzag+VariableByte encoding.
int ip = inPos.get();
int inPosLast = ip + inLen;
for (; ip < inPosLast; ++ip)
{
// Filter with delta+zigzag encoding.
int n = ctx.encodeInt(inBuf[ip]);
// Variable byte encoding.
//PORT NOTE: The following IF statements are ported from a switch. Fall through switches are not allowed in C#
int zeros = Integer.numberOfLeadingZeros(n);
if (zeros < 4)
{
byteBuf.put((sbyte)(((int)((uint)n >> 28) & 0x7F) | 0x80));
}
if (zeros < 11)
{
byteBuf.put((sbyte)(((int)((uint)n >> 21) & 0x7F) | 0x80));
}
if (zeros < 18)
{
byteBuf.put((sbyte)(((int)((uint)n >> 14) & 0x7F) | 0x80));
}
if (zeros < 25)
{
byteBuf.put((sbyte)(((int)((uint)n >> 7) & 0x7F) | 0x80));
}
byteBuf.put((sbyte)((uint)n & 0x7F));
}
// Padding buffer to considerable as IntBuffer.
for (int i = (4 - (byteBuf.position() % 4)) % 4; i > 0; --i)
{
unchecked
{
byteBuf.put((sbyte)(0x80));
}
}
int outLen = byteBuf.position() / 4;
byteBuf.flip();
IntBuffer intBuf = byteBuf.asIntBuffer();
/*
* Console.WriteLine(String.format(
* "inLen=%d pos=%d limit=%d outLen=%d outBuf.len=%d", inLen,
* intBuf.position(), intBuf.limit(), outLen, outBuf.Length));
*/
intBuf.get(outBuf, outPos.get(), outLen);
inPos.add(inLen);
outPos.add(outLen);
}
/**
* Compress data in blocks of BLOCK_SIZE integers (if fewer than BLOCK_SIZE integers
* are provided, nothing is done).
*
* @see IntegerCODEC#compress(int[], IntWrapper, int, int[], IntWrapper)
*/
public void headlessCompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos)
{
inlength = Util.greatestMultiple(inlength, BLOCK_SIZE);
// Allocate memory for working area.
int finalinpos = inpos.get() + inlength;
while (inpos.get() != finalinpos)
{
int thissize = Math.Min(pageSize,
finalinpos - inpos.get());
encodePage(@in, inpos, thissize, @out, outpos);
}
}
public void headlessUncompress(int[] @in, IntWrapper inpos, int inlength, int[] @out, IntWrapper outpos, int num)
{
Array.Copy(@in, inpos.get(), @out, outpos.get(), num);
inpos.add(num);
outpos.add(num);
}