the emulator works fine for me too. But my code is simple and still fails for half size and raw color. Maybe the dcraw make mem image function?

(...)
iProcessor.unpack();
// call for postprocessing utility
iProcessor.dcraw_process();
int check_makemem;
image = iProcessor.dcraw_make_mem_image(&check_makemem);
Mat image_rawRGB(cv::Size(image->width, image->height), rawBitDepthCV, image->data, cv::Mat::AUTO_STEP);

This gives out a mangled image if half size is on and raw colors..