public IImageBuffer SKBitmapToImageBuffer(SKBitmap bitmap)
{
if (bitmap == null)
{
return(null);
}
if (bitmap.ColorType != SKColorType.Rgba8888 && bitmap.ColorType != SKColorType.Bgra8888 && bitmap.ColorType != SKColorType.Gray8)
{
// try to convert image to 32BPP bitmap if source pixel format is unknown
if (!bitmap.CanCopyTo(SKColorType.Rgba8888))
{
throw new NotSupportedException("SKImage Input pixel format not supported.");
}
using (bitmap = bitmap.Copy(SKColorType.Rgba8888))
{
return(ToImageBuffer(bitmap));
}
}
else
{
return(ToImageBuffer(bitmap));
}
}
public PixelFormatConversionShim(SKImageInfo destinationInfo, IntPtr framebufferAddress)
{
_destinationInfo = destinationInfo;
_framebufferAddress = framebufferAddress;
// Create bitmap using default platform settings
_bitmap = new SKBitmap(destinationInfo.Width, destinationInfo.Height);
if (!_bitmap.CanCopyTo(destinationInfo.ColorType))
{
_bitmap.Dispose();
throw new Exception(
$"Unable to create pixel format shim for conversion from {_bitmap.ColorType} to {destinationInfo.ColorType}");
}
Surface = SKSurface.Create(_bitmap.Info, _bitmap.GetPixels(), _bitmap.RowBytes);
if (Surface == null)
{
_bitmap.Dispose();
throw new Exception(
$"Unable to create pixel format shim surface for conversion from {_bitmap.ColorType} to {destinationInfo.ColorType}");
}
SurfaceCopyHandler = Disposable.Create(CopySurface);
}
public PixelFormatShim(SKImageInfo nfo, IntPtr fb, int rowBytes)
{
_nfo = nfo;
_fb = fb;
_rowBytes = rowBytes;
_bitmap = new SKBitmap(nfo.Width, nfo.Height);
if (!_bitmap.CanCopyTo(nfo.ColorType))
{
_bitmap.Dispose();
throw new Exception(
$"Unable to create pixel format shim for conversion from {_bitmap.ColorType} to {nfo.ColorType}");
}
}
