private void extractMainMarkSeg(short marker, RandomAccessIO ehs)
{
if (nfMarkSeg == 0)
{
// First non-delimiting marker of the header
// JPEG 2000 part 1 specify that it must be SIZ
if (marker != CSJ2K.j2k.codestream.Markers.SIZ)
{
throw new CorruptedCodestreamException("First marker after " + "SOC " + "must be SIZ " + System.Convert.ToString(marker, 16));
}
}
System.String htKey = ""; // Name used as a key for the hash-table
if (ht == null)
{
ht = new Dictionary<string, byte[]>();
}
switch (marker)
{
case CSJ2K.j2k.codestream.Markers.SIZ:
if ((nfMarkSeg & SIZ_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one SIZ marker " + "segment found in main " + "header");
}
nfMarkSeg |= SIZ_FOUND;
htKey = "SIZ";
break;
case CSJ2K.j2k.codestream.Markers.SOD:
throw new CorruptedCodestreamException("SOD found in main header");
case CSJ2K.j2k.codestream.Markers.EOC:
throw new CorruptedCodestreamException("EOC found in main header");
case CSJ2K.j2k.codestream.Markers.SOT:
if ((nfMarkSeg & SOT_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one SOT " + "marker " + "found right after " + "main " + "or tile header");
}
nfMarkSeg |= SOT_FOUND;
return ;
case CSJ2K.j2k.codestream.Markers.COD:
if ((nfMarkSeg & COD_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one COD " + "marker " + "found in main header");
}
nfMarkSeg |= COD_FOUND;
htKey = "COD";
break;
case CSJ2K.j2k.codestream.Markers.COC:
nfMarkSeg |= COC_FOUND;
htKey = "COC" + (nCOCMarkSeg++);
break;
case CSJ2K.j2k.codestream.Markers.QCD:
if ((nfMarkSeg & QCD_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one QCD " + "marker " + "found in main header");
}
nfMarkSeg |= QCD_FOUND;
htKey = "QCD";
break;
case CSJ2K.j2k.codestream.Markers.QCC:
nfMarkSeg |= QCC_FOUND;
htKey = "QCC" + (nQCCMarkSeg++);
break;
case CSJ2K.j2k.codestream.Markers.RGN:
nfMarkSeg |= RGN_FOUND;
htKey = "RGN" + (nRGNMarkSeg++);
break;
case CSJ2K.j2k.codestream.Markers.COM:
nfMarkSeg |= COM_FOUND;
htKey = "COM" + (nCOMMarkSeg++);
break;
case CSJ2K.j2k.codestream.Markers.CRG:
if ((nfMarkSeg & CRG_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one CRG " + "marker " + "found in main header");
}
nfMarkSeg |= CRG_FOUND;
htKey = "CRG";
break;
case CSJ2K.j2k.codestream.Markers.PPM:
nfMarkSeg |= PPM_FOUND;
htKey = "PPM" + (nPPMMarkSeg++);
break;
case CSJ2K.j2k.codestream.Markers.TLM:
if ((nfMarkSeg & TLM_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one TLM " + "marker " + "found in main header");
}
nfMarkSeg |= TLM_FOUND;
break;
case CSJ2K.j2k.codestream.Markers.PLM:
if ((nfMarkSeg & PLM_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one PLM " + "marker " + "found in main header");
}
FacilityManager.getMsgLogger().printmsg(CSJ2K.j2k.util.MsgLogger_Fields.WARNING, "PLM marker segment found but " + "not used by by JJ2000 decoder.");
nfMarkSeg |= PLM_FOUND;
htKey = "PLM";
break;
case CSJ2K.j2k.codestream.Markers.POC:
if ((nfMarkSeg & POC_FOUND) != 0)
{
throw new CorruptedCodestreamException("More than one POC " + "marker segment found " + "in main header");
}
nfMarkSeg |= POC_FOUND;
htKey = "POC";
break;
case CSJ2K.j2k.codestream.Markers.PLT:
throw new CorruptedCodestreamException("PLT found in main header");
case CSJ2K.j2k.codestream.Markers.PPT:
throw new CorruptedCodestreamException("PPT found in main header");
default:
htKey = "UNKNOWN";
FacilityManager.getMsgLogger().printmsg(CSJ2K.j2k.util.MsgLogger_Fields.WARNING, "Non recognized marker segment (0x" + System.Convert.ToString(marker, 16) + ") in main header!");
break;
}
if (marker < unchecked((short)0xffffff30) || marker > unchecked((short)0xffffff3f))
{
// Read marker segment length and create corresponding byte buffer
int markSegLen = ehs.readUnsignedShort();
byte[] buf = new byte[markSegLen];
// Copy data (after re-insertion of the marker segment length);
buf[0] = (byte) ((markSegLen >> 8) & 0xFF);
buf[1] = (byte) (markSegLen & 0xFF);
ehs.readFully(buf, 2, markSegLen - 2);
if (!htKey.Equals("UNKNOWN"))
{
// Store array in hashTable
ht[htKey] = buf;
}
}
}
