private int getCMarkerWSQ(TokenD token, int type)
{
if (token.pointer >= token.buffer.Length)
{
throw new SystemException("Error, Invalid pointer : " + token.pointer);
}
int marker = token.readShort();
switch (type)
{
case WSQConstants.SOI_WSQ:
if (marker != WSQConstants.SOI_WSQ)
{
throw new SystemException("ERROR : getCMarkerWSQ : No SOI marker : " + marker);
}
return marker;
case WSQConstants.TBLS_N_SOF:
if (marker != WSQConstants.DTT_WSQ
&& marker != WSQConstants.DQT_WSQ
&& marker != WSQConstants.DHT_WSQ
&& marker != WSQConstants.SOF_WSQ
&& marker != WSQConstants.COM_WSQ)
{
throw new SystemException("ERROR : getc_marker_wsq : No SOF, Table, or comment markers : " + marker);
}
return marker;
case WSQConstants.TBLS_N_SOB:
if (marker != WSQConstants.DTT_WSQ
&& marker != WSQConstants.DQT_WSQ
&& marker != WSQConstants.DHT_WSQ
&& marker != WSQConstants.SOB_WSQ
&& marker != WSQConstants.COM_WSQ)
{
throw new SystemException("ERROR : getc_marker_wsq : No SOB, Table, or comment markers : " +
marker);
}
return marker;
case WSQConstants.ANY_WSQ:
if ((marker & 0xff00) != 0xff00)
{
throw new SystemException("ERROR : getc_marker_wsq : no marker found : " + marker);
}
/* Added by MDG on 03-07-05 */
if ((marker < WSQConstants.SOI_WSQ) || (marker > WSQConstants.COM_WSQ))
{
throw new SystemException("ERROR : getc_marker_wsq : not a valid marker : " + marker);
}
return marker;
default:
throw new SystemException("ERROR : getc_marker_wsq : Invalid marker : " + marker);
}
}
private void getCTransformTable(TokenD token)
{
// read header Size;
int tmp;
tmp = token.readShort();
token.tableDTT.hisz = token.readByte();
token.tableDTT.losz = token.readByte();
token.tableDTT.hifilt = new float[token.tableDTT.hisz];
token.tableDTT.lofilt = new float[token.tableDTT.losz];
int aSize;
if (token.tableDTT.hisz % 2 != 0)
{
aSize = (token.tableDTT.hisz + 1) / 2;
}
else
{
aSize = token.tableDTT.hisz / 2;
}
float[] aLofilt = new float[aSize];
aSize--;
for (int cnt = 0; cnt <= aSize; cnt++)
{
int sign = token.readByte();
int scale = token.readByte();
long shrtDat = token.readInt();
aLofilt[cnt] = (float)shrtDat;
while (scale > 0)
{
aLofilt[cnt] /= 10.0F;
scale--;
}
if (sign != 0)
{
aLofilt[cnt] *= -1.0F;
}
if (token.tableDTT.hisz % 2 != 0)
{
token.tableDTT.hifilt[cnt + aSize] = intSign(cnt) * aLofilt[cnt];
if (cnt > 0)
{
token.tableDTT.hifilt[aSize - cnt] = token.tableDTT.hifilt[cnt + aSize];
}
}
else
{
token.tableDTT.hifilt[cnt + aSize + 1] = intSign(cnt) * aLofilt[cnt];
token.tableDTT.hifilt[aSize - cnt] = -1 * token.tableDTT.hifilt[cnt + aSize + 1];
}
}
if (token.tableDTT.losz % 2 != 0)
{
aSize = (token.tableDTT.losz + 1) / 2;
}
else
{
aSize = token.tableDTT.losz / 2;
}
float[] aHifilt = new float[aSize];
aSize--;
for (int cnt = 0; cnt <= aSize; cnt++)
{
int sign = token.readByte();
int scale = token.readByte();
long shrtDat = token.readInt();
aHifilt[cnt] = (float)shrtDat;
while (scale > 0)
{
aHifilt[cnt] /= 10.0F;
scale--;
}
if (sign != 0)
{
aHifilt[cnt] *= -1.0F;
}
if (token.tableDTT.losz % 2 != 0)
{
token.tableDTT.lofilt[cnt + aSize] = intSign(cnt) * aHifilt[cnt];
if (cnt > 0)
{
token.tableDTT.lofilt[aSize - cnt] = token.tableDTT.lofilt[cnt + aSize];
}
}
else
{
token.tableDTT.lofilt[cnt + aSize + 1] = intSign(cnt + 1) * aHifilt[cnt];
token.tableDTT.lofilt[aSize - cnt] = token.tableDTT.lofilt[cnt + aSize + 1];
}
}
token.tableDTT.lodef = 1;
token.tableDTT.hidef = 1;
}
private WSQHelper.HuffmanTable getCHuffmanTable(TokenD token, int maxHuffcounts, int bytesLeft, bool readTableLen)
{
WSQHelper.HuffmanTable huffmanTable = new WSQHelper.HuffmanTable();
/* table_len */
if (readTableLen)
{
huffmanTable.tableLen = token.readShort();
huffmanTable.bytesLeft = huffmanTable.tableLen - 2;
bytesLeft = huffmanTable.bytesLeft;
}
else
{
huffmanTable.bytesLeft = bytesLeft;
}
/* If no bytes left ... */
if (bytesLeft <= 0)
{
throw new SystemException("ERROR : getCHuffmanTable : no huffman table bytes remaining");
}
/* Table ID */
huffmanTable.tableId = token.readByte();
huffmanTable.bytesLeft--;
huffmanTable.huffbits = new int[WSQConstants.MAX_HUFFBITS];
int numHufvals = 0;
/* L1 ... L16 */
for (int i = 0; i < WSQConstants.MAX_HUFFBITS; i++)
{
huffmanTable.huffbits[i] = token.readByte();
numHufvals += huffmanTable.huffbits[i];
}
huffmanTable.bytesLeft -= WSQConstants.MAX_HUFFBITS;
if (numHufvals > maxHuffcounts + 1)
{
throw new SystemException("ERROR : getCHuffmanTable : numHufvals is larger than MAX_HUFFCOUNTS");
}
/* Could allocate only the amount needed ... then we wouldn't */
/* need to pass MAX_HUFFCOUNTS. */
huffmanTable.huffvalues = new int[maxHuffcounts + 1];
/* V1,1 ... V16,16 */
for (int i = 0; i < numHufvals; i++)
{
huffmanTable.huffvalues[i] = token.readByte();
}
huffmanTable.bytesLeft -= numHufvals;
return huffmanTable;
}
private WSQHelper.HeaderFrm getCFrameHeaderWSQ(TokenD token)
{
WSQHelper.HeaderFrm headerFrm = new WSQHelper.HeaderFrm();
//noinspection UnusedDeclaration
int hdrSize = token.readShort(); /* header size */
headerFrm.black = token.readByte();
headerFrm.white = token.readByte();
headerFrm.height = token.readShort();
headerFrm.width = token.readShort();
int scale = token.readByte(); /* exponent scaling parameter */
int shrtDat = token.readShort(); /* buffer pointer */
headerFrm.mShift = (float)shrtDat;
while (scale > 0)
{
headerFrm.mShift /= 10.0F;
scale--;
}
scale = token.readByte();
shrtDat = token.readShort();
headerFrm.rScale = (float)shrtDat;
while (scale > 0)
{
headerFrm.rScale /= 10.0F;
scale--;
}
headerFrm.wsqEncoder = token.readByte();
headerFrm.software = token.readShort();
return headerFrm;
}
private string getCComment(TokenD token)
{
int size = token.readShort() - 2;
byte[] t = token.readBytes(size);
return ASCIIEncoding.ASCII.GetString(t, 0, t.Length);
}
private int getCBlockHeader(TokenD token)
{
token.readShort(); /* block header size */
return token.readByte();
}
public void getCQuantizationTable(TokenD token)
{
int tmp;
tmp = token.readShort(); /* header size */
int scale = token.readByte(); /* scaling parameter */
int shrtDat = token.readShort(); /* counter and temp short buffer */
token.tableDQT.binCenter = (float)shrtDat;
while (scale > 0)
{
token.tableDQT.binCenter /= 10.0F;
scale--;
}
for (int cnt = 0; cnt < Table_DQT.MAX_SUBBANDS; cnt++)
{
scale = token.readByte();
shrtDat = token.readShort();
token.tableDQT.qBin[cnt] = (float)shrtDat;
while (scale > 0)
{
token.tableDQT.qBin[cnt] /= 10.0F;
scale--;
}
scale = token.readByte();
shrtDat = token.readShort();
token.tableDQT.zBin[cnt] = (float)shrtDat;
while (scale > 0)
{
token.tableDQT.zBin[cnt] /= 10.0F;
scale--;
}
}
token.tableDQT.dqtDef = (char)1;
}