public void ReadBackPacketLengths()
{
// Test if the packet lengths we have
// copied from the source tile-part, and written
// into the destination tile-part, can be now
// read back from the destination stream.
// The source and destination packet lengths
// should be equal
_mem.Seek(0, SeekOrigin.Begin);
var tpout = Jp2File.Open(_mem)
.OpenCodestream()
.OpenTilePart(0, 0);
var lengthsOut = tpout.GetPacketLengths(
0, tpout.Packets);
var tpin = _csin.OpenTilePart(0, 0);
var lengthsIn = tpin.GetPacketLengths(
0, tpin.Packets);
bool seqEq = lengthsOut.SequenceEqual(lengthsIn);
Assert.IsTrue(seqEq);
}
public void OpenImage()
{
Jp2File jp2 = Jp2File.Open(_fs);
Assert.IsNotNull(jp2);
JP2Codestream cs = jp2.OpenCodestream();
Assert.IsNotNull(cs);
Assert.IsNull(cs.Parent);
Assert.AreEqual <Size>(cs.ImageSize, Image.Default.ImageSize);
Assert.AreEqual <Size>(cs.TileSize, Image.Default.ImageSize);
Assert.AreEqual(cs.TileCount, new Size(1, 1));
Assert.AreEqual(cs.Components, Image.Default.Components);
Assert.AreEqual(cs.Progression, Image.Default.Progression);
Assert.AreEqual(cs.ImageOffset, Point.Empty);
Assert.AreEqual(cs.TileOffset, Point.Empty);
Assert.AreEqual(cs.DecompositionLevels, Image.Default.Decompositions);
Assert.AreEqual(cs.QualityLayers, 1);
int tileparts = cs.OpenChildren().Count();
Assert.AreEqual(1, tileparts);
_fs.Seek(0, SeekOrigin.Begin);
long socOffset = Find(_fs, (ushort)MarkerType.SOC);
long sizOffset = Find(_fs, (ushort)MarkerType.SIZ);
long sotOffset = Find(_fs, (ushort)MarkerType.SOT);
long sodOffset = Find(_fs, (ushort)MarkerType.SOD);
long eocOffset = Find(_fs, (ushort)MarkerType.EOC);
Assert.AreEqual(socOffset, cs.Position);
Assert.AreEqual(sizOffset, cs.Position + 2);
Assert.AreEqual(sotOffset, cs.Position + cs.FirstChildOffset);
long sodOffsetFromCs = cs.Position + cs.FirstChildOffset;
sodOffsetFromCs += cs.OpenTilePart(0, 0).FirstChildOffset - 2;
Assert.AreEqual(sodOffset, sodOffsetFromCs);
Assert.AreEqual(eocOffset, cs.Position + cs.Length - 2);
}
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);
}