func: static inline void RENAME(uyvyToY)(uint8_t *dst, const uint8_t *src, int width, uint32_t *unused)
  
  {
  
  #if COMPILE_TEMPLATE_MMX
  
      __asm__ volatile(
  
          "mov                  %0, %%"REG_a"         \n\t"
  
          "1:                                         \n\t"
  
          "movq  (%1, %%"REG_a",2), %%mm0             \n\t"
  
          "movq 8(%1, %%"REG_a",2), %%mm1             \n\t"
  
          "psrlw                $8, %%mm0             \n\t"
  
          "psrlw                $8, %%mm1             \n\t"
  
          "packuswb          %%mm1, %%mm0             \n\t"
  
          "movq              %%mm0, (%2, %%"REG_a")   \n\t"
  
          "add                  $8, %%"REG_a"         \n\t"
  
          " js                  1b                    \n\t"
  
          : : "g" ((x86_reg)-width), "r" (src+width*2), "r" (dst+width)
  
          : "%"REG_a
  
      );
  
  #else
  
      int i;
  
      for (i=0; i<width; i++)
  
          dst[i]= src[2*i+1];
  
  #endif
  
  }
  