public void CountTilePartsTest()
{
// in LRCP progression, created a tile-part for
// each resolution level and quality layer.
// make sure we have enumerated all the tile-parts.
Assert.AreEqual <Size>(_cs.TileSize, Image.Default.TileSize);
Assert.AreEqual <Size>(_cs.ImageSize, Image.Default.ImageSize);
Assert.AreEqual <Size>(_cs.TileCount, Image.Default.TileCount);
Assert.AreEqual(_cs.Progression, ProgressionOrder.LRCP);
Assert.AreEqual(_cs.DecompositionLevels, 2);
Assert.AreEqual(_cs.QualityLayers, 2);
int tileparts = _cs.OpenChildren().Count();
Size tc = Image.Default.TileCount;
int expected = tc.Width * tc.Height;
expected *= _cs.QualityLayers;
expected *= (_cs.DecompositionLevels + 1);
Assert.AreEqual(tileparts, expected);
}
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);
}