public void CopyTilePartTest()
{
_mem.Seek(0, SeekOrigin.Begin);
var tpout = Jp2File
.Open(_mem)
.OpenCodestream()
.OpenTilePart(0, 0);
var tpin = _jp2.OpenCodestream().OpenTilePart(0, 0);
Assert.AreEqual(tpin.FirstChildOffset, tpout.FirstChildOffset);
Assert.AreEqual(tpin.TotalPacketLength, tpout.TotalPacketLength);
// lets check if SOT and PLT markers are the same
_mem.Seek(tpout.Position, SeekOrigin.Begin);
_fs.Seek(tpin.Position, SeekOrigin.Begin);
int totalCount = (int)tpin.FirstChildOffset;
// compare SOT and PLT markers
CompareStreams(totalCount);
// compare packet content
_mem.Seek(tpout.Position + tpout.FirstChildOffset,
SeekOrigin.Begin);
_fs.Seek(tpin.Position + tpin.FirstChildOffset,
SeekOrigin.Begin);
CompareStreams((int)tpin.TotalPacketLength);
}
private void CopyTile(ushort tIdx, Jp2File dstJp2)
{
JP2Codestream src = OpenJp2(tIdx).OpenCodestream();
JP2Codestream dst = dstJp2.OpenCodestream();
ThrowIfDifferentInputs(_firstCodestream, src);
for (int r = 0; r <= src.DecompositionLevels; r++)
{
CopyTileResLevel(dst, src, tIdx, r);
}
}
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_LRtCP_L2R3T512.jp2");
_jp2 = Jp2File.Open(_fs);
_cs = _jp2.OpenCodestream();
}