internal BitmapSurface(uint width, uint height, PixelFormat pixelFormat)
{
PixelFormat = pixelFormat;
BytesPerPixel = ((byte)pixelFormat & (byte)PixelFormat.BppFormatMask) >> (byte)PixelFormat.BppFormatOffs;
Height = height;
Width = width;
Stride = (uint)Width * (uint)BytesPerPixel;
ByteLength = Stride * (uint)Height;
// create memory section and map
_section = CreateFileMapping(new IntPtr(-1), IntPtr.Zero, 0x04, 0, ByteLength, null);
ImageData = MapViewOfFile(_section, 0xF001F, 0, 0, ByteLength);
var mediaPixelFormat = BytesPerPixel == 2 ? PixelFormats.Bgr555 : BytesPerPixel == 4 ? PixelFormats.Bgr32 : PixelFormats.Default;
BitmapSource = Imaging.CreateBitmapSourceFromMemorySection(_section, (int)Width, (int)Height, mediaPixelFormat, (int)Width * BytesPerPixel, 0) as InteropBitmap;
ImageUIntPtr = (uint*)ImageData;
ImageWordPtr = (ushort*)ImageData;
ImageBytePtr = (byte*)ImageData;
}
private Color(ushort color)
{
colval = color;
bytepp = 2;
format = PixelFormat.Bpp16A1R5G5B5;
}
private Color(uint color)
{
colval = color;
bytepp = 4;
format = PixelFormat.Bpp32A8R8G8B8;
}
public static Color FromARGB(byte a, byte r, byte g, byte b, PixelFormat format = PixelFormat.Bpp32A8R8G8B8)
{
uint value;
Color color;
switch (format) {
case PixelFormat.Bpp16A1R5G5B5: value = (uint)((r & 0x1F) << 10 | (g & 0x1F) << 5 | (b & 0x1F));
if (a > 0) value |= 0xFF000000;
color = (ushort)(value & 0x0000FFFF);
break;
case PixelFormat.Bpp32A8R8G8B8: value = (uint)(a << 24 | r << 16 | g << 8 | b);
color = (uint)value;
break;
default: throw new NotImplementedException();
}
return color;
}
public static Color FromARGB(byte r, byte g, byte b, PixelFormat format = PixelFormat.Bpp32A8R8G8B8)
{
return FromARGB(0xFF, r, g, b, format);
}
internal BitmapSurface(uint width, uint height, byte[] bytes, PixelFormat pixelFormat = PixelFormat.Bpp16A1R5G5B5) : this(width, height, pixelFormat)
{
fixed(byte* _bytes = bytes) {
CreateFromPBytes(width, height, _bytes);
}
}
internal BitmapSurface(BitmapSource bitmap, PixelFormat pixelFormat = PixelFormat.Bpp16A1R5G5B5) : this((uint)bitmap.Width, (uint)bitmap.Height, pixelFormat)
{
using (MemoryStream outStream = new MemoryStream()) {
BitmapEncoder enc = new BmpBitmapEncoder();
enc.Frames.Add(BitmapFrame.Create(bitmap));
enc.Save(outStream);
var _bitmap = new Bitmap(outStream);
CreateFromBitmap(_bitmap);
}
}
internal BitmapSurface(Bitmap bitmap, PixelFormat pixelFormat = PixelFormat.Bpp16A1R5G5B5) : this((ushort)bitmap.Width, (ushort)bitmap.Height, pixelFormat)
{
CreateFromBitmap(bitmap);
}
