private static void ToYCbCr(IPixelAccessor pixels, int x, int y, Block yBlock, Block cbBlock, Block crBlock)
{
int xmax = pixels.Width - 1;
int ymax = pixels.Height - 1;
for (int j = 0; j < 8; j++){
for (int i = 0; i < 8; i++){
byte[] pixel = pixels[Math.Min(x + i, xmax), Math.Min(y + j, ymax)].ToBytes();
YCbCr2 color = Color2.FromArgb(pixel[3], pixel[0], pixel[1], pixel[2]);
int index = 8*j + i;
yBlock[index] = (int) color.Y;
cbBlock[index] = (int) color.Cb;
crBlock[index] = (int) color.Cr;
}
}
}
private void ConvertFromYCbCr(int imageWidth, int imageHeight, ImageBase image)
{
int scale = comp[0].h/comp[1].h;
Color2[] pixels = new Color2[imageWidth*imageHeight];
Parallel.For(0, imageHeight, Bootstrapper.instance.ParallelOptions, y =>{
int yo = ycbcrImage.get_row_y_offset(y);
int co = ycbcrImage.get_row_c_offset(y);
for (int x = 0; x < imageWidth; x++){
byte yy = ycbcrImage.pix_y[yo + x];
byte cb = ycbcrImage.pix_cb[co + (x/scale)];
byte cr = ycbcrImage.pix_cr[co + (x/scale)];
int index = y*imageWidth + x;
Color2 color = new YCbCr2(yy, cb, cr);
Color2 packed = Color2.FromArgb(color.A, color.R, color.G, color.B);
pixels[index] = packed;
}
});
image.SetPixels(imageWidth, imageHeight, pixels);
AssignResolution(image);
}