| private readLyResCompPos ( int lys, int lye, int ress, int rese, int comps, int compe ) : bool | ||
| lys | int | Index of the first layer for each component and resolution. /// /// |
| lye | int | Index of the last layer. /// /// |
| ress | int | Index of the first resolution level. /// /// |
| rese | int | Index of the last resolution level. /// /// |
| comps | int | Index of the first component. /// /// |
| compe | int | Index of the last component. /// /// |
| Результат | bool | |
private bool readLyResCompPos(int[][] lys, int lye, int ress, int rese, int comps, int compe)
{
int minlys = 10000;
for (int c = comps; c < compe; c++)
{
//loop on components
// Check if this component exists
if (c >= mdl.Length)
continue;
for (int r = ress; r < rese; r++)
{
//loop on resolution levels
if (lys[c] != null && r < lys[c].Length && lys[c][r] < minlys)
{
minlys = lys[c][r];
}
}
}
int t = TileIdx;
int start;
bool status = false;
int lastByte = firstPackOff[t][curTilePart] + tilePartLen[t][curTilePart] - 1 - tilePartHeadLen[t][curTilePart];
int numLayers = ((System.Int32) decSpec.nls.getTileDef(t));
int nPrec = 1;
int hlen, plen;
System.String strInfo = "Tile " + TileIdx + " (tile-part:" + curTilePart + "): offset, length, header length\n"; ;
bool pph = false;
if (((System.Boolean) decSpec.pphs.getTileDef(t)))
{
pph = true;
}
for (int l = minlys; l < lye; l++)
{
// loop on layers
for (int r = ress; r < rese; r++)
{
// loop on resolution levels
for (int c = comps; c < compe; c++)
{
// loop on components
// Checks if component exists
if (c >= mdl.Length)
continue;
// Checks if resolution level exists
if (r >= lys[c].Length)
continue;
if (r > mdl[c])
continue;
// Checks if layer exists
if (l < lys[c][r] || l >= numLayers)
continue;
nPrec = pktDec.getNumPrecinct(c, r);
for (int p = 0; p < nPrec; p++)
{
// loop on precincts
start = in_Renamed.Pos;
// If packed packet headers are used, there is no need
// to check that there are bytes enough to read header
if (pph)
{
pktDec.readPktHead(l, r, c, p, cbI[c][r], nBytes);
}
// If we are about to read outside of tile-part,
// skip to next tile-part
if (start > lastByte && curTilePart < firstPackOff[t].Length - 1)
{
curTilePart++;
in_Renamed.seek(firstPackOff[t][curTilePart]);
lastByte = in_Renamed.Pos + tilePartLen[t][curTilePart] - 1 - tilePartHeadLen[t][curTilePart];
}
// Read SOP marker segment if necessary
status = pktDec.readSOPMarker(nBytes, p, c, r);
if (status)
{
if (printInfo)
{
FacilityManager.getMsgLogger().printmsg(CSJ2K.j2k.util.MsgLogger_Fields.INFO, strInfo);
}
return true;
}
if (!pph)
{
status = pktDec.readPktHead(l, r, c, p, cbI[c][r], nBytes);
}
if (status)
{
if (printInfo)
{
FacilityManager.getMsgLogger().printmsg(CSJ2K.j2k.util.MsgLogger_Fields.INFO, strInfo);
}
return true;
}
// Store packet's head length
hlen = in_Renamed.Pos - start;
pktHL.Add((System.Int32) hlen);
// Reads packet's body
status = pktDec.readPktBody(l, r, c, p, cbI[c][r], nBytes);
plen = in_Renamed.Pos - start;
strInfo += (" Pkt l=" + l + ",r=" + r + ",c=" + c + ",p=" + p + ": " + start + ", " + plen + ", " + hlen + "\n");
if (status)
{
if (printInfo)
{
FacilityManager.getMsgLogger().printmsg(CSJ2K.j2k.util.MsgLogger_Fields.INFO, strInfo);
}
return true;
}
} // end loop on precincts
} // end loop on components
} // end loop on resolution levels
} // end loop on layers
if (printInfo)
{
FacilityManager.getMsgLogger().printmsg(CSJ2K.j2k.util.MsgLogger_Fields.INFO, strInfo);
}
return false; // Decoding rate was not reached
}
