public Bitmap(byte[] data)
{
Pointer ptr = Intrinsic.GetObjectAddress(data); // HACK - FIX ME! Unsafe. GetObjectAddress method is only for low level internal use.
Header = new BitmapHeader();
Header.Signature = new char[2] {
Encoding.ASCII.GetChar(ptr.Load8(0)), Encoding.ASCII.GetChar(ptr.Load8(1))
};
Header.Size = ptr.Load32(2);
Header.DataSectionOffset = ptr.Load32(0xA);
Header.Width = ptr.Load32(0x12);
Header.Height = ptr.Load32(0x16);
Header.Depth = ptr.Load8(0x1C);
if (Header.Signature != Signature)
{
throw new Exception("Given image is not a bitmap (signature recognization failed)");
}
Width = (int)Header.Width;
Height = (int)Header.Height;
Bpp = (int)Header.Depth / 8;
Size = (uint)(Width * Height * Bpp);
RawData = GC.AllocateObject(Size); // HACK - FIX ME! This is not an object. Use new byte[] instead
uint len = (uint)Width;
Pointer temp = GC.AllocateObject(len); // HACK - FIX ME! This is not an object. Use new byte[] instead
uint w = 0, h = (uint)Height - 1;
for (uint i = 0; i < Size; i += (uint)Bpp)
{
if (w == Width)
{
switch (Bpp)
{
case 1: // 8 bit
for (uint k = 0; k < len; k++)
{
RawData.Store8((uint)Width * h + k, temp.Load8(k));
}
break;
case 2: // 16 bit
for (uint k = 0; k < len; k++)
{
RawData.Store16((uint)Width * h + k, temp.Load16(k));
}
break;
case 3: // 24 bit
for (uint k = 0; k < len; k++)
{
RawData.Store24((uint)Width * h + k, temp.Load24(k));
}
break;
case 4: // 32 bit
for (uint k = 0; k < len; k++)
{
RawData.Store32((uint)Width * h + k, temp.Load32(k));
}
break;
}
w = 0;
h--;
}
uint offset = Header.DataSectionOffset + i;
switch (Bpp)
{
case 1: // 8 bit
temp.Store8(w, ptr.Load8(offset));
break;
case 2: // 16 bit
temp.Store16(w, ptr.Load16(offset));
break;
case 3: // 24 bit
temp.Store24(w, ptr.Load24(offset));
break;
case 4: // 32 bit
temp.Store32(w, ptr.Load32(offset));
break;
}
w++;
}
Internal.MemoryClear(temp, len); // HACK - FIX ME! MemoryClear is for low level internal use only.
return;
}
public byte this[uint offset]
{
get { CheckOffset(offset); return(address.Load8(offset)); }
set { CheckOffset(offset); address.Store8(offset, value); }
}