public static Bitmap ToBitmap(this SKBitmap skiaBitmap)
{
// TODO: replace all this with a SKBitmap.PeekPixels
// and call the overload
var info = skiaBitmap.Info;
// try keep the pixel format
var config = Bitmap.Config.Argb8888;
switch (info.ColorType)
{
case SKColorType.Alpha8:
config = Bitmap.Config.Alpha8;
break;
case SKColorType.Rgb565:
config = Bitmap.Config.Rgb565;
break;
case SKColorType.Argb4444:
config = Bitmap.Config.Argb4444;
break;
}
var bmp = Bitmap.CreateBitmap(info.Width, info.Height, config);
var ptr = bmp.LockPixels();
var success = true;
if (config == Bitmap.Config.Argb8888 && info.ColorType != SKColorType.Rgba8888)
{
// wrap the pixels so we can copy in one action
var tempInfo = new SKImageInfo(info.Width, info.Height, SKColorType.Rgba8888, SKAlphaType.Premul);
// TODO: replace this with a SKPixmap.ReadPixels
var tempBmp = new SKBitmap();
tempBmp.InstallPixels(tempInfo, ptr);
success = skiaBitmap.CopyTo(tempBmp, SKColorType.Rgba8888);
tempBmp.Reset();
tempBmp.Dispose();
}
else
{
// must multiply HEIGHT * rowBytes to get total number of bytes
success = skiaBitmap.CopyPixelsTo(ptr, bmp.Height * bmp.RowBytes);
}
bmp.UnlockPixels();
if (!success)
{
bmp.Recycle();
bmp.Dispose();
bmp = null;
}
return(bmp);
}