static inline void RENAME(yuvPlanartouyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,

	unsigned int width, unsigned int height,

	int lumStride, int chromStride, int dstStride, int vertLumPerChroma)

{

	unsigned y;

	const unsigned chromWidth= width>>1;

	for(y=0; y<height; y++)

	{

#ifdef HAVE_MMX

//FIXME handle 2 lines a once (fewer prefetch, reuse some chrom, but very likely limited by mem anyway)

		asm volatile(

			"xor %%"REG_a", %%"REG_a"	\n\t"

			".balign 16			\n\t"

			"1:				\n\t"

			PREFETCH" 32(%1, %%"REG_a", 2)	\n\t"

			PREFETCH" 32(%2, %%"REG_a")	\n\t"

			PREFETCH" 32(%3, %%"REG_a")	\n\t"

			"movq (%2, %%"REG_a"), %%mm0	\n\t" // U(0)

			"movq %%mm0, %%mm2		\n\t" // U(0)

			"movq (%3, %%"REG_a"), %%mm1	\n\t" // V(0)

			"punpcklbw %%mm1, %%mm0		\n\t" // UVUV UVUV(0)

			"punpckhbw %%mm1, %%mm2		\n\t" // UVUV UVUV(8)



			"movq (%1, %%"REG_a",2), %%mm3	\n\t" // Y(0)

			"movq 8(%1, %%"REG_a",2), %%mm5	\n\t" // Y(8)

			"movq %%mm0, %%mm4		\n\t" // Y(0)

			"movq %%mm2, %%mm6		\n\t" // Y(8)

			"punpcklbw %%mm3, %%mm0		\n\t" // YUYV YUYV(0)

			"punpckhbw %%mm3, %%mm4		\n\t" // YUYV YUYV(4)

			"punpcklbw %%mm5, %%mm2		\n\t" // YUYV YUYV(8)

			"punpckhbw %%mm5, %%mm6		\n\t" // YUYV YUYV(12)



			MOVNTQ" %%mm0, (%0, %%"REG_a", 4)\n\t"

			MOVNTQ" %%mm4, 8(%0, %%"REG_a", 4)\n\t"

			MOVNTQ" %%mm2, 16(%0, %%"REG_a", 4)\n\t"

			MOVNTQ" %%mm6, 24(%0, %%"REG_a", 4)\n\t"



			"add $8, %%"REG_a"		\n\t"

			"cmp %4, %%"REG_a"		\n\t"

			" jb 1b				\n\t"

			::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "g" ((long)chromWidth)

			: "%"REG_a

		);

#else

//FIXME adapt the alpha asm code from yv12->yuy2



#if __WORDSIZE >= 64

		int i;

		uint64_t *ldst = (uint64_t *) dst;

		const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;

		for(i = 0; i < chromWidth; i += 2){

			uint64_t k, l;

			k = uc[0] + (yc[0] << 8) +

			    (vc[0] << 16) + (yc[1] << 24);

			l = uc[1] + (yc[2] << 8) +

			    (vc[1] << 16) + (yc[3] << 24);

			*ldst++ = k + (l << 32);

			yc += 4;

			uc += 2;

			vc += 2;

		}



#else

		int i, *idst = (int32_t *) dst;

		const uint8_t *yc = ysrc, *uc = usrc, *vc = vsrc;

		for(i = 0; i < chromWidth; i++){

#ifdef WORDS_BIGENDIAN

			*idst++ = (uc[0] << 24)+ (yc[0] << 16) +

			    (vc[0] << 8) + (yc[1] << 0);

#else

			*idst++ = uc[0] + (yc[0] << 8) +

			    (vc[0] << 16) + (yc[1] << 24);

#endif

			yc += 2;

			uc++;

			vc++;

		}

#endif

#endif

		if((y&(vertLumPerChroma-1))==(vertLumPerChroma-1) )

		{

			usrc += chromStride;

			vsrc += chromStride;

		}

		ysrc += lumStride;

		dst += dstStride;

	}

#ifdef HAVE_MMX

asm(    EMMS" \n\t"

        SFENCE" \n\t"

        :::"memory");

#endif

}
