public void AperioSingeTileRead(Tiff InputTiffFile, ref Byte[] targetBuf, PageLevel pageLevel, int xGrid, int yGrid)
{
if (InputTiffFile != null)
{
InputTiffFile.SetDirectory(pageLevel.PageIndex); // page必须为short类型
InputTiffFile.ReadEncodedTile(xGrid + yGrid * pageLevel.Tile_XCount, targetBuf, 0, pageLevel.Tile_Width * pageLevel.Tile_Width * 3);
}
else
{
targetBuf = null;
}
}
public void AperioMultiTilesRead(Tiff InputTiffFile, out Byte[] targetBuf, PageLevel pageLevel, int xGrid, int yGrid, int xTiles, int yTiles)
{
Compression compression = (Compression)InputTiffFile.GetField(TiffTag.COMPRESSION)[0].ToInt();
if (compression != Compression.JPEG | xGrid < 0 | yGrid < 0)
{
targetBuf = null;
return;
}
if ((pageLevel.Tile_Width == pageLevel.Tile_Height) && (pageLevel.PageIndex <= 2))
{
InputTiffFile.SetDirectory(pageLevel.PageIndex); // page必须为short类型
InputTiffFile.ReadMultiEncodedTile(out TargetBuf, xGrid, yGrid, xTiles, yTiles, 0, pageLevel.tile_bytesize);
/* 以下代码已被 Tiff ReadMultiEncodedTile 替代
* int width = pageLevel.Tile_Width * xTiles;
* int height = pageLevel.Tile_Height * yTiles;
*
* targetBuf = new Byte[width * height * 3];
* Byte[] tileBuf = new Byte[pageLevel.tile_bytesize];
*
* for (int y = 0; y < yTiles; y++)
* {
* for (int x = 0; x < xTiles; x++)
* {
* InputTiffFile.ReadEncodedTile((xGrid + x) + (yGrid + y) * (pageLevel.Tile_XCount), tileBuf, 0, pageLevel.tile_bytesize);
* for (int xx = 0; xx < pageLevel.Tile_Height; xx++)
* {
* Buffer.BlockCopy(tileBuf, xx * pageLevel.Tile_Width * 3, targetBuf,
* x * pageLevel.Tile_Width * 3 + (xx + y * pageLevel.Tile_Height) * width * 3, pageLevel.Tile_Width * 3);
* }
* }
* }
*/
targetBuf = TargetBuf;
}
else
{
targetBuf = null;
return;
}
}
