uvc_simple_frac
uvc_simple_frac(&timeperframe.numerator,
uvc_simple_frac(&itv->x.discrete.numerator,
uvc_simple_frac(&itv->x.stepwise.min.numerator,
uvc_simple_frac(&itv->x.stepwise.max.numerator,
uvc_simple_frac(&itv->x.stepwise.step.numerator,
uvc_simple_frac(&numerator, &denominator, 8, 333);
extern void uvc_simple_frac(uint32_t *numerator, uint32_t *denominator,