public override void Decode(Rectangle r)
{
for (int y = 0; y < r.Height; y++)
{
int z = r.X + (y + r.Y) * Framebuffer.Width;
for (int x = 0; x < r.Width; x++)
{
Framebuffer.PixelData[x + z] = PixelReader.ReadPixel();
}
}
}
private void ReadZrlePlainRLEPixels(int tw, int th, int[] tileBuffer)
{
var ptr = 0;
var end = ptr + tw * th;
while (ptr < end)
{
var pix = PixelReader.ReadPixel();
var len = 1;
int b;
do
{
b = _DSerializer.ReadByte();
len += b;
} while (b == byte.MaxValue);
while (len-- > 0)
{
tileBuffer[ptr++] = pix;
}
}
}
public override void Decode(Rectangle r)
{
FillBuffer();
for (var ty = 0; ty < r.Height; ty += TileHeight)
{
var th = Math.Min(r.Height - ty, TileHeight);
for (var tx = 0; tx < r.Width; tx += TileWidth)
{
var tw = Math.Min(r.Width - tx, TileWidth);
var subencoding = _DSerializer.ReadByte();
if (subencoding >= 17 && subencoding <= 127 || subencoding == 129)
{
throw new VncException("Invalid subencoding value");
}
var isRLE = (subencoding & 128) != 0;
var paletteSize = subencoding & 127;
var tileRect = new Rectangle(tx, ty, tw, th);
var destRect = new Rectangle(tx + r.X, ty + r.Y, tw, th);
// Fill palette
for (var i = 0; i < paletteSize; i++)
{
_Palette[i] = PixelReader.ReadPixel();
}
if (paletteSize == 1)
{
FillRect(destRect, _Palette[0]);
continue;
}
if (!isRLE)
{
if (paletteSize == 0)
{
_RawDecoder.Decode(destRect); // Raw Pixel
}
else
{
ReadZrlePackedPixels(tw, th, _Palette, paletteSize, _TileBuffer); // Packed palette
}
}
else
{
if (paletteSize == 0)
{
ReadZrlePlainRLEPixels(tw, th, _TileBuffer); // Plain RLE
}
else
{
ReadZrlePackedRLEPixels(tw, th, _Palette, _TileBuffer); // Packed RLE palette
}
}
CopyTile(_TileBuffer, destRect);
}
}
}
