internal IntPtr ConvertToMemory()
{
int size = Marshal.SizeOf(typeof(EncoderParameter));
Debug.Assert(size == (16 + 4 + 4 + 4), "wrong size! (" + size + ")");
IntPtr memory = (IntPtr)((long)Marshal.AllocHGlobal(param.Length * size + Marshal.SizeOf(typeof(Int32))));
if (memory == IntPtr.Zero)
{
throw SafeNativeMethods.StatusException(SafeNativeMethods.OutOfMemory);
}
Marshal.WriteInt32(memory, param.Length);
for (int i = 0; i < param.Length; i++)
{
Marshal.StructureToPtr(param[i], (IntPtr)((long)memory + Marshal.SizeOf(typeof(Int32)) + i * size), false);
}
return(memory);
}
public static void WriteInt32(object ptr, int ofs, int val)
{
WriteValueSlow(ptr, ofs, val, (IntPtr nativeHome, int offset, int value) => Marshal.WriteInt32(nativeHome, offset, value));
}