private void CopyTileResLevel(JP2Codestream dst, JP2Codestream src, ushort tIdx, int r)
{
int decomps = src.DecompositionLevels;
var dstTilePart = dst.CreateTilePart(tIdx, r == decomps);
// get all packets for this resolution level and source tile
// currently support only a single tile in source image for every
// destination tile.
QueryContext queryContext = new QueryContext(src, 0);
PreciseQuery preciseQuery = PreciseQuery.Create(queryContext);
var intervals = preciseQuery
.Resolution(r)
.Execute();
JP2Tile srcTile = src.Tiles[0];
// add packet lengths
Func <JP2TilePart, int, int, int, int> addPacketLengths =
(tpSrc, pckStart, pckCount, voidParam) =>
{
var lengths = tpSrc.GetPacketLengths(pckStart, pckCount);
dstTilePart.AddPacketLengths(lengths);
return(voidParam);
};
EnumerateIntervals <int>(intervals, srcTile, addPacketLengths);
// bulk transfer packet data
dstTilePart.Flush();
byte[] buffer = new byte[1 << 16];
Func <JP2TilePart, int, int, uint, uint> bulkTransfer =
(tpSrc, pckStart, pckCount, dstOffset) =>
{
uint dataCount = JP2TilePart.BulkTransferData(
dstTilePart,
dstOffset,
tpSrc,
pckStart,
pckCount,
buffer);
return(dstOffset + dataCount);
};
EnumerateIntervals <uint>(
intervals,
srcTile,
bulkTransfer);
dstTilePart.Close();
srcTile.Close();
}
private void CopyImage()
{
var cs = _jp2.OpenCodestream();
int tileparts = cs.OpenChildren().Count();
var markers = cs.Markers.Values
.Where(ms => ms.Type != MarkerType.TLM);
var csout = new JP2Codestream(markers, tileparts);
csout.Bind(_mem, 0);
JP2TilePart tpin = cs.OpenTilePart(0, 0);
JP2TilePart tpout = csout.CreateTilePart(0, true);
tpout.AddPacketLengths(
tpin.GetPacketLengths(0, tpin.Packets));
tpout.Flush();
uint dataCount =
JP2TilePart.BulkTransferData(tpout, 0, tpin, 0, tpin.Packets);
csout.Flush();
}
public void Initialize()
{
_fs = File.OpenRead("test.jp2");
_mem = new MemoryStream();
_csin = Jp2File.Open(_fs).OpenCodestream();
var siz = _csin.Markers[MarkerType.SIZ] as SizMarker;
var cod = _csin.Markers[MarkerType.COD] as CodMarker;
var qcd = _csin.Markers[MarkerType.QCD] as QcdMarker;
var tpin = _csin.OpenTilePart(0, 0);
var csout = new JP2Codestream(new List <MarkerSegment>()
{
siz, cod, qcd
}, 1);
csout.Bind(_mem, 0);
var tpout = csout.CreateTilePart(0, true);
var lengths = tpin.GetPacketLengths(0, tpin.Packets);
tpout.AddPacketLengths(lengths);
tpout.Flush();
csout.Flush();
_mem.Seek(0, SeekOrigin.Begin);
}