private void ReadArgb()
{
if (_dataset.RasterCount < 4)
{
throw new GdalException("ARGB Format was indicated but there are only " + _dataset.RasterCount + " bands!");
}
_alpha = _red;
_red = _dataset.GetRasterBand(2);
_green = _dataset.GetRasterBand(3);
_blue = _dataset.GetRasterBand(4);
int tw = TileCollection.TileWidth;
int th = TileCollection.TileHeight;
for (int row = 0; row < TileCollection.NumTilesTall(); row++)
{
for (int col = 0; col < TileCollection.NumTilesWide(); col++)
{
int width = TileCollection.GetTileWidth(col);
int height = TileCollection.GetTileHeight(row);
InRamImageData id = new InRamImageData(width, height);
Bitmap image = new Bitmap(width, height, PixelFormat.Format32bppArgb);
byte[] red = new byte[width * height];
byte[] g = new byte[width * height];
byte[] b = new byte[width * height];
byte[] a = new byte[width * height];
_red.ReadRaster(col * tw, row * th, width, height, red, width, height, 0, 0);
_green.ReadRaster(col * tw, row * th, width, height, g, width, height, 0, 0);
_blue.ReadRaster(col * tw, row * th, width, height, b, width, height, 0, 0);
_alpha.ReadRaster(col * tw, row * th, width, height, a, width, height, 0, 0);
BitmapData bData = image.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
Stride = bData.Stride;
image.UnlockBits(bData);
byte[] vals = new byte[Width * Height * 4];
int stride = Stride;
const int Bpp = 4;
for (int r = 0; r < height; r++)
{
for (int c = 0; c < width; c++)
{
vals[(r * stride) + (c * Bpp)] = b[(r * width) + c];
vals[(r * stride) + (c * Bpp) + 1] = g[(r * width) + c];
vals[(r * stride) + (c * Bpp) + 2] = red[(r * width) + c];
vals[(r * stride) + (c * Bpp) + 3] = a[(r * width) + c];
}
}
id.Values = vals;
id.CopyValuesToBitmap();
TileCollection.Tiles[row, col] = id;
}
}
SetTileBounds(Bounds.AffineCoefficients);
}
private void ReadRgb()
{
if (_dataset.RasterCount < 3)
{
throw new GdalException("RGB Format was indicated but there are only " + _dataset.RasterCount + " bands!");
}
_green = _dataset.GetRasterBand(2);
_blue = _dataset.GetRasterBand(3);
int tw = TileCollection.TileWidth;
int th = TileCollection.TileHeight;
int ntt = TileCollection.NumTilesTall();
int ntw = TileCollection.NumTilesWide();
ProgressMeter pm = new ProgressMeter(ProgressHandler, "Reading Tiles ", ntt * ntw);
for (int row = 0; row < ntt; row++)
{
for (int col = 0; col < ntw; col++)
{
int width = TileCollection.GetTileWidth(col);
int height = TileCollection.GetTileHeight(row);
InRamImageData id = new InRamImageData(width, height);
Bitmap image = new Bitmap(width, height, PixelFormat.Format32bppArgb);
byte[] red = new byte[width * height];
byte[] g = new byte[width * height];
byte[] b = new byte[width * height];
_red.ReadRaster(col * tw, row * th, width, height, red, width, height, 0, 0);
_green.ReadRaster(col * tw, row * th, width, height, g, width, height, 0, 0);
_blue.ReadRaster(col * tw, row * th, width, height, b, width, height, 0, 0);
BitmapData bData = image.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite,
PixelFormat.Format32bppArgb);
Stride = bData.Stride;
image.UnlockBits(bData);
byte[] vals = new byte[width * height * 4];
int stride = Stride;
const int bpp = 4;
for (int r = 0; r < height; r++)
{
for (int c = 0; c < width; c++)
{
vals[r * stride + c * bpp] = b[r * width + c];
vals[r * stride + c * bpp + 1] = g[r * width + c];
vals[r * stride + c * bpp + 2] = red[r * width + c];
vals[r * stride + c * bpp + 3] = 255;
}
}
id.Values = vals;
id.CopyValuesToBitmap();
TileCollection.Tiles[row, col] = id;
pm.CurrentValue = row * ntw + col;
}
}
pm.Reset();
SetTileBounds(Bounds.AffineCoefficients);
}
private void ReadPaletteBuffered()
{
ColorTable ct = _red.GetRasterColorTable();
if (ct == null)
{
throw new GdalException("Image was stored with a palette interpretation but has no color table.");
}
if (ct.GetPaletteInterpretation() != PaletteInterp.GPI_RGB)
{
throw new GdalException("Only RGB palette interpreation is currently supported by this plugin, " + ct.GetPaletteInterpretation() + " is not supported.");
}
int tw = TileCollection.TileWidth;
int th = TileCollection.TileHeight;
for (int row = 0; row < TileCollection.NumTilesTall(); row++)
{
for (int col = 0; col < TileCollection.NumTilesWide(); col++)
{
// takes into account that right and bottom tiles might be smaller.
int width = TileCollection.GetTileWidth(col);
int height = TileCollection.GetTileHeight(row);
ImageData id = new ImageData();
byte[] red = new byte[width * height];
_red.ReadRaster(col * tw, row * th, width, height, red, width, height, 0, 0);
Bitmap image = new Bitmap(width, height, PixelFormat.Format32bppArgb);
BitmapData bData = image.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
Stride = bData.Stride;
image.UnlockBits(bData);
const int Bpp = 4;
int stride = Stride;
byte[] vals = new byte[width * height * 4];
byte[][] colorTable = new byte[256][];
for (int i = 0; i < 255; i++)
{
ColorEntry ce = ct.GetColorEntry(i);
colorTable[i] = new[] { (byte)ce.c3, (byte)ce.c2, (byte)ce.c1, (byte)ce.c4 };
}
for (int r = 0; r < height; r++)
{
for (int c = 0; c < width; c++)
{
Array.Copy(colorTable[red[c + (r * width)]], 0, vals, (row * stride) + (col * Bpp), 4);
}
}
id.Values = vals;
id.CopyValuesToBitmap();
TileCollection.Tiles[row, col] = id;
}
}
SetTileBounds(Bounds.AffineCoefficients);
}
private void ReadGrayIndex()
{
int tw = TileCollection.TileWidth;
int th = TileCollection.TileHeight;
for (int row = 0; row < TileCollection.NumTilesTall(); row++)
{
for (int col = 0; col < TileCollection.NumTilesWide(); col++)
{
int width = TileCollection.GetTileWidth(col);
int height = TileCollection.GetTileHeight(row);
InRamImageData id = new InRamImageData(width, height);
byte[] red = new byte[width * height];
_red.ReadRaster(col * tw, row * th, width, height, red, width, height, 0, 0);
Bitmap image = new Bitmap(width, height);
BitmapData bData = image.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
Stride = bData.Stride;
image.UnlockBits(bData);
byte[] vals = new byte[width * height * 4];
int stride = Stride;
const int Bpp = 4;
for (int r = 0; r < height; r++)
{
for (int c = 0; c < width; c++)
{
vals[(r * stride) + (c * Bpp)] = red[(r * width) + c];
vals[(r * stride) + (c * Bpp) + 1] = red[(r * width) + c];
vals[(r * stride) + (c * Bpp) + 2] = red[(r * width) + c];
vals[(r * stride) + (c * Bpp) + 3] = 255;
}
}
id.Values = vals;
id.CopyValuesToBitmap();
TileCollection.Tiles[row, col] = id;
}
}
SetTileBounds(Bounds.AffineCoefficients);
}