__ccdc_get_crop
crop = __ccdc_get_crop(ccdc, sd_state, which);
sel->r = *__ccdc_get_crop(ccdc, sd_state, sel->which);
sel->r = *__ccdc_get_crop(ccdc, sd_state, sel->which);
*__ccdc_get_crop(ccdc, sd_state, sel->which) = sel->r;
crop = __ccdc_get_crop(ccdc, sd_state, fmt->which);