find_bits
find_bits(info->pixel_information.red_mask, &si->red_pos, &si->red_size);
find_bits(info->pixel_information.green_mask, &si->green_pos, &si->green_size);
find_bits(info->pixel_information.blue_mask, &si->blue_pos, &si->blue_size);
find_bits(info->pixel_information.reserved_mask, &si->rsvd_pos, &si->rsvd_size);