Thanks for the "dirty trick" info.
I will add the P1.colors=1 to my code and try again.

About your first suggestion, you mention three steps:
1) Call LibRaw::open_file()
2) Position to libraw_internal_data.unpacker_data.data_offset
3) Read libraw_internal_data.unpacker_data.data_size bytes

So i try to code you suggestion:

int main(int i, char *img[])
{
  i=1;
  int tempimg, row, col;
 
// step one: Open file
  LibRaw RawProcessor;
  tempimg = RawProcessor.open_file(img[i]);
#define RAW RawProcessor.libraw_internal_data.unpacker_data
 
// step two: positioning libraw_internal_data.unpacker_data.data_offset
  tmpimg = RawProcessor.unpack();
 
/* how to position it in data.offset?... */
 
// step three: Read libraw_internal_data.unpacker_data.data_size
  for(row=0;row<RAW.data_size.iheight;row++)
    for(col=0;col<RAW.data_size.iwidth;col++)
      RAW[row*RAW.data_size.iwidth+col][0] = RAW[row*RAW.data_size.iwidth+col][RawProcessor.COLOR(row,col)];
 
// mode coding, not finished yet...
 
  RawProcessor.recycle();
  return 0;
}

Am i in the right direction or i'm completely lost?...

Really appreciate any comments you can give me.