private void createTileParts()
{
int i, prem, t, length;
int pIndex; // phIndex removed
int tppStart;
int tilePart;
int p, np, nomnp;
int numTileParts;
int numPackets;
System.IO.MemoryStream temp = new System.IO.MemoryStream();
byte[] tempByteArr;
// Create tile parts
tileParts = new byte[nt][][];
maxtp = 0;
for (t = 0; t < nt; t++)
{
// Calculate number of tile parts. If tileparts are not used,
// put all packets in the first tilepart
if (pptp == 0)
pptp = ppt[t];
prem = ppt[t];
//UPGRADE_WARNING: Data types in Visual C# might be different. Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
numTileParts = (int) System.Math.Ceiling(((double) prem) / pptp);
numPackets = packetHeaders[t].Length;
maxtp = (numTileParts > maxtp)?numTileParts:maxtp;
tileParts[t] = new byte[numTileParts][];
// Create all the tile parts for tile t
tppStart = 0;
pIndex = 0;
p = 0;
//phIndex = 0;
for (tilePart = 0; tilePart < numTileParts; tilePart++)
{
// Calculate number of packets in this tilepart
nomnp = (pptp > prem)?prem:pptp;
np = nomnp;
// Write tile part header
if (tilePart == 0)
{
// Write original tile part header up to SOD marker
temp.Write(tileHeaders[t], 0, tileHeaders[t].Length - 2);
}
else
{
// Write empty header of length TP_HEAD_LEN-2
temp.Write(new byte[TP_HEAD_LEN - 2], 0, TP_HEAD_LEN - 2);
}
// Write PPT marker segments if PPT used
if (pptUsed)
{
int pptLength = 3; // Zppt and Lppt
int pptIndex = 0;
int phLength;
p = pIndex;
while (np > 0)
{
phLength = packetHeaders[t][p].Length;
// If the total legth of the packet headers is greater
// than MAX_LPPT, several PPT markers are needed
if (pptLength + phLength > CSJ2K.j2k.codestream.Markers.MAX_LPPT)
{
temp.WriteByte((System.Byte) SupportClass.URShift(CSJ2K.j2k.codestream.Markers.PPT, 8));
temp.WriteByte((System.Byte) (CSJ2K.j2k.codestream.Markers.PPT & 0x00FF));
temp.WriteByte((System.Byte) SupportClass.URShift(pptLength, 8));
temp.WriteByte((System.Byte) pptLength);
temp.WriteByte((System.Byte) pptIndex++);
for (i = pIndex; i < p; i++)
{
temp.Write(packetHeaders[t][i], 0, packetHeaders[t][i].Length);
}
pptLength = 3; // Zppt and Lppt
pIndex = p;
}
pptLength += phLength;
p++;
np--;
}
// Write last PPT marker
temp.WriteByte((System.Byte) SupportClass.URShift(CSJ2K.j2k.codestream.Markers.PPT, 8));
temp.WriteByte((System.Byte) (CSJ2K.j2k.codestream.Markers.PPT & 0x00FF));
temp.WriteByte((System.Byte) SupportClass.URShift(pptLength, 8));
temp.WriteByte((System.Byte) pptLength);
temp.WriteByte((System.Byte) pptIndex);
for (i = pIndex; i < p; i++)
{
temp.Write(packetHeaders[t][i], 0, packetHeaders[t][i].Length);
}
}
pIndex = p;
np = nomnp;
// Write SOD marker
temp.WriteByte((System.Byte) SupportClass.URShift(CSJ2K.j2k.codestream.Markers.SOD, 8));
temp.WriteByte((System.Byte) (CSJ2K.j2k.codestream.Markers.SOD & 0x00FF));
// Write packet data and packet headers if PPT and PPM not used
for (p = tppStart; p < tppStart + np; p++)
{
if (!tempSop)
{
temp.Write(sopMarkSeg[t][p], 0, CSJ2K.j2k.codestream.Markers.SOP_LENGTH);
}
if (!(ppmUsed || pptUsed))
{
temp.Write(packetHeaders[t][p], 0, packetHeaders[t][p].Length);
}
temp.Write(packetData[t][p], 0, packetData[t][p].Length);
}
tppStart += np;
// Edit tile part header
tempByteArr = temp.ToArray();
tileParts[t][tilePart] = tempByteArr;
length = (int)temp.Length;
if (tilePart == 0)
{
// Edit first tile part header
tempByteArr[6] = (byte) (SupportClass.URShift(length, 24)); // Psot
tempByteArr[7] = (byte) (SupportClass.URShift(length, 16));
tempByteArr[8] = (byte) (SupportClass.URShift(length, 8));
tempByteArr[9] = (byte) (length);
tempByteArr[10] = (byte) SupportClass.Identity((0)); // TPsot
tempByteArr[11] = (byte) (numTileParts); // TNsot
}
else
{
// Edit tile part header
tempByteArr[0] = (byte) (SupportClass.URShift(CSJ2K.j2k.codestream.Markers.SOT, 8)); // SOT
tempByteArr[1] = (byte) (CSJ2K.j2k.codestream.Markers.SOT & 0x00FF);
tempByteArr[2] = (byte) SupportClass.Identity((0)); // Lsot
tempByteArr[3] = (byte) SupportClass.Identity((10));
tempByteArr[4] = (byte) (SupportClass.URShift(t, 8)); // Isot
tempByteArr[5] = (byte) (t); //
tempByteArr[6] = (byte) (SupportClass.URShift(length, 24)); // Psot
tempByteArr[7] = (byte) (SupportClass.URShift(length, 16));
tempByteArr[8] = (byte) (SupportClass.URShift(length, 8));
tempByteArr[9] = (byte) (length);
tempByteArr[10] = (byte) (tilePart); //TPsot
tempByteArr[11] = (byte) (numTileParts); // TNsot
}
//UPGRADE_ISSUE: Method 'java.io.ByteArrayOutputStream.reset' was not converted. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1000_javaioByteArrayOutputStreamreset'"
//temp.reset();
temp.SetLength(0);
prem -= np;
}
}
temp.Dispose();
}
