/*
 *
 *  rgb2rgb.c, Software RGB to RGB convertor
 *  pluralize by Software PAL8 to RGB convertor
 *               Software YUV to YUV convertor
 *               Software YUV to RGB convertor
 *  Written by Nick Kurshev.
 *  palette & yuv & runtime cpu stuff by Michael (michaelni@gmx.at) (under GPL)
 */

#undef PREFETCH
#undef MOVNTQ
#undef EMMS
#undef SFENCE
#undef MMREG_SIZE
#undef PREFETCHW
#undef PAVGB

#ifdef HAVE_SSE2
#define MMREG_SIZE 16
#else
#define MMREG_SIZE 8
#endif

#ifdef HAVE_3DNOW
#define PREFETCH  "prefetch"
#define PREFETCHW "prefetchw"
#define PAVGB	  "pavgusb"
#elif defined ( HAVE_MMX2 )
#define PREFETCH "prefetchnta"
#define PREFETCHW "prefetcht0"
#define PAVGB	  "pavgb"
#else
#define PREFETCH "/nop"
#define PREFETCHW "/nop"
#endif

#ifdef HAVE_3DNOW
/* On K6 femms is faster of emms. On K7 femms is directly mapped on emms. */
#define EMMS     "femms"
#else
#define EMMS     "emms"
#endif

#ifdef HAVE_MMX2
#define MOVNTQ "movntq"
#define SFENCE "sfence"
#else
#define MOVNTQ "movq"
#define SFENCE "/nop"
#endif

static inline void RENAME(rgb24to32)(const uint8_t *src,uint8_t *dst,unsigned src_size)
{
  uint8_t *dest = dst;
  const uint8_t *s = src;
  const uint8_t *end;
#ifdef HAVE_MMX
  uint8_t *mm_end;
#endif
  end = s + src_size;
#ifdef HAVE_MMX
  __asm __volatile(PREFETCH"	%0"::"m"(*s):"memory");
  mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*4))*(MMREG_SIZE*4));
  __asm __volatile("movq	%0, %%mm7"::"m"(mask32):"memory");
  if(mm_end == end) mm_end -= MMREG_SIZE*4;
  while(s < mm_end)
  {
    __asm __volatile(
	PREFETCH"	32%1\n\t"
	"movd	%1, %%mm0\n\t"
	"punpckldq 3%1, %%mm0\n\t"
	"movd	6%1, %%mm1\n\t"
	"punpckldq 9%1, %%mm1\n\t"
	"movd	12%1, %%mm2\n\t"
	"punpckldq 15%1, %%mm2\n\t"
	"movd	18%1, %%mm3\n\t"
	"punpckldq 21%1, %%mm3\n\t"
	"pand	%%mm7, %%mm0\n\t"
	"pand	%%mm7, %%mm1\n\t"
	"pand	%%mm7, %%mm2\n\t"
	"pand	%%mm7, %%mm3\n\t"
	MOVNTQ"	%%mm0, %0\n\t"
	MOVNTQ"	%%mm1, 8%0\n\t"
	MOVNTQ"	%%mm2, 16%0\n\t"
	MOVNTQ"	%%mm3, 24%0"
	:"=m"(*dest)
	:"m"(*s)
	:"memory");
    dest += 32;
    s += 24;
  }
  __asm __volatile(SFENCE:::"memory");
  __asm __volatile(EMMS:::"memory");
#endif
  while(s < end)
  {
    *dest++ = *s++;
    *dest++ = *s++;
    *dest++ = *s++;
    *dest++ = 0;
  }
}

static inline void RENAME(rgb32to24)(const uint8_t *src,uint8_t *dst,unsigned src_size)
{
  uint8_t *dest = dst;
  const uint8_t *s = src;
  const uint8_t *end;
#ifdef HAVE_MMX
  uint8_t *mm_end;
#endif
  end = s + src_size;
#ifdef HAVE_MMX
  __asm __volatile(PREFETCH"	%0"::"m"(*s):"memory");
  mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*4))*(MMREG_SIZE*4));
  while(s < mm_end)
  {
    __asm __volatile(
	PREFETCH"	32%1\n\t"
	"movq	%1, %%mm0\n\t"
	"movq	8%1, %%mm1\n\t"
	"movq	16%1, %%mm4\n\t"
	"movq	24%1, %%mm5\n\t"
	"movq	%%mm0, %%mm2\n\t"
	"movq	%%mm1, %%mm3\n\t"
	"movq	%%mm4, %%mm6\n\t"
	"movq	%%mm5, %%mm7\n\t"
	"psrlq	$8, %%mm2\n\t"
	"psrlq	$8, %%mm3\n\t"
	"psrlq	$8, %%mm6\n\t"
	"psrlq	$8, %%mm7\n\t"
	"pand	%2, %%mm0\n\t"
	"pand	%2, %%mm1\n\t"
	"pand	%2, %%mm4\n\t"
	"pand	%2, %%mm5\n\t"
	"pand	%3, %%mm2\n\t"
	"pand	%3, %%mm3\n\t"
	"pand	%3, %%mm6\n\t"
	"pand	%3, %%mm7\n\t"
	"por	%%mm2, %%mm0\n\t"
	"por	%%mm3, %%mm1\n\t"
	"por	%%mm6, %%mm4\n\t"
	"por	%%mm7, %%mm5\n\t"

	"movq	%%mm1, %%mm2\n\t"
	"movq	%%mm4, %%mm3\n\t"
	"psllq	$48, %%mm2\n\t"
	"psllq	$32, %%mm3\n\t"
	"pand	%4, %%mm2\n\t"
	"pand	%5, %%mm3\n\t"
	"por	%%mm2, %%mm0\n\t"
	"psrlq	$16, %%mm1\n\t"
	"psrlq	$32, %%mm4\n\t"
	"psllq	$16, %%mm5\n\t"
	"por	%%mm3, %%mm1\n\t"
	"pand	%6, %%mm5\n\t"
	"por	%%mm5, %%mm4\n\t"

	MOVNTQ"	%%mm0, %0\n\t"
	MOVNTQ"	%%mm1, 8%0\n\t"
	MOVNTQ"	%%mm4, 16%0"
	:"=m"(*dest)
	:"m"(*s),"m"(mask24l),
	 "m"(mask24h),"m"(mask24hh),"m"(mask24hhh),"m"(mask24hhhh)
	:"memory");
    dest += 24;
    s += 32;
  }
  __asm __volatile(SFENCE:::"memory");
  __asm __volatile(EMMS:::"memory");
#endif
  while(s < end)
  {
    *dest++ = *s++;
    *dest++ = *s++;
    *dest++ = *s++;
    s++;
  }
}

/*
 Original by Strepto/Astral
 ported to gcc & bugfixed : A'rpi
 MMX2, 3DNOW optimization by Nick Kurshev
 32bit c version, and and&add trick by Michael Niedermayer
*/
static inline void RENAME(rgb15to16)(const uint8_t *src,uint8_t *dst,unsigned src_size)
{
#ifdef HAVE_MMX
  register const char* s=src+src_size;
  register char* d=dst+src_size;
  register int offs=-src_size;
  __asm __volatile(PREFETCH"	%0"::"m"(*(s+offs)));
  __asm __volatile(
	"movq	%0, %%mm4\n\t"
	::"m"(mask15s));
  while(offs<0)
  {
	__asm __volatile(
		PREFETCH"	32%1\n\t"
		"movq	%1, %%mm0\n\t"
		"movq	8%1, %%mm2\n\t"
		"movq	%%mm0, %%mm1\n\t"
		"movq	%%mm2, %%mm3\n\t"
		"pand	%%mm4, %%mm0\n\t"
		"pand	%%mm4, %%mm2\n\t"
		"paddw	%%mm1, %%mm0\n\t"
		"paddw	%%mm3, %%mm2\n\t"
		MOVNTQ"	%%mm0, %0\n\t"
		MOVNTQ"	%%mm2, 8%0"
		:"=m"(*(d+offs))
		:"m"(*(s+offs))
		);
	offs+=16;
  }
  __asm __volatile(SFENCE:::"memory");
  __asm __volatile(EMMS:::"memory");
#else
#if 0
   const uint16_t *s1=( uint16_t * )src;
   uint16_t *d1=( uint16_t * )dst;
   uint16_t *e=((uint8_t *)s1)+src_size;
   while( s1<e ){
     register int x=*( s1++ );
     /* rrrrrggggggbbbbb
        0rrrrrgggggbbbbb
        0111 1111 1110 0000=0x7FE0
        00000000000001 1111=0x001F */
     *( d1++ )=( x&0x001F )|( ( x&0x7FE0 )<<1 );
   }
#else
	const unsigned *s1=( unsigned * )src;
	unsigned *d1=( unsigned * )dst;
	int i;
	int size= src_size>>2;
	for(i=0; i<size; i++)
	{
		register int x= s1[i];
//		d1[i] = x + (x&0x7FE07FE0); //faster but need msbit =0 which might not allways be true
		d1[i] = (x&0x7FFF7FFF) + (x&0x7FE07FE0);

	}
#endif
#endif
}

static inline void RENAME(rgb32to16)(const uint8_t *src, uint8_t *dst, unsigned src_size)
{
#ifdef HAVE_MMX
	const uint8_t *s = src;
	const uint8_t *end,*mm_end;
	uint16_t *d = (uint16_t *)dst;
	end = s + src_size;
	mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*2))*(MMREG_SIZE*2));
	__asm __volatile(PREFETCH"	%0"::"m"(*src):"memory");
	__asm __volatile(
	    "movq	%0, %%mm7\n\t"
	    "movq	%1, %%mm6\n\t"
	    ::"m"(red_16mask),"m"(green_16mask));
	while(s < mm_end)
	{
	    __asm __volatile(
		PREFETCH" 32%1\n\t"
		"movd	%1, %%mm0\n\t"
		"movd	4%1, %%mm3\n\t"
		"punpckldq 8%1, %%mm0\n\t"
		"punpckldq 12%1, %%mm3\n\t"
		"movq	%%mm0, %%mm1\n\t"
		"movq	%%mm0, %%mm2\n\t"
		"movq	%%mm3, %%mm4\n\t"
		"movq	%%mm3, %%mm5\n\t"
		"psrlq	$3, %%mm0\n\t"
		"psrlq	$3, %%mm3\n\t"
		"pand	%2, %%mm0\n\t"
		"pand	%2, %%mm3\n\t"
		"psrlq	$5, %%mm1\n\t"
		"psrlq	$5, %%mm4\n\t"
		"pand	%%mm6, %%mm1\n\t"
		"pand	%%mm6, %%mm4\n\t"
		"psrlq	$8, %%mm2\n\t"
		"psrlq	$8, %%mm5\n\t"
		"pand	%%mm7, %%mm2\n\t"
		"pand	%%mm7, %%mm5\n\t"
		"por	%%mm1, %%mm0\n\t"
		"por	%%mm4, %%mm3\n\t"
		"por	%%mm2, %%mm0\n\t"
		"por	%%mm5, %%mm3\n\t"
		"psllq	$16, %%mm3\n\t"
		"por	%%mm3, %%mm0\n\t"
		MOVNTQ"	%%mm0, %0\n\t"
		:"=m"(*d):"m"(*s),"m"(blue_16mask):"memory");
		d += 4;
		s += 16;
	}
	while(s < end)
	{
		const int b= *s++;
		const int g= *s++;
		const int r= *s++;
		*d++ = (b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8);
	}
	__asm __volatile(SFENCE:::"memory");
	__asm __volatile(EMMS:::"memory");
#else
	unsigned j,i,num_pixels=src_size/4;
	uint16_t *d = (uint16_t *)dst;
	for(i=0,j=0; j<num_pixels; i+=4,j++)
	{
		const int b= src[i+0];
		const int g= src[i+1];
		const int r= src[i+2];

		d[j]= (b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8);
	}
#endif
}

static inline void RENAME(rgb32to15)(const uint8_t *src, uint8_t *dst, unsigned src_size)
{
#ifdef HAVE_MMX
	const uint8_t *s = src;
	const uint8_t *end,*mm_end;
	uint16_t *d = (uint16_t *)dst;
	end = s + src_size;
	mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*2))*(MMREG_SIZE*2));
	__asm __volatile(PREFETCH"	%0"::"m"(*src):"memory");
	__asm __volatile(
	    "movq	%0, %%mm7\n\t"
	    "movq	%1, %%mm6\n\t"
	    ::"m"(red_15mask),"m"(green_15mask));
	while(s < mm_end)
	{
	    __asm __volatile(
		PREFETCH" 32%1\n\t"
		"movd	%1, %%mm0\n\t"
		"movd	4%1, %%mm3\n\t"
		"punpckldq 8%1, %%mm0\n\t"
		"punpckldq 12%1, %%mm3\n\t"
		"movq	%%mm0, %%mm1\n\t"
		"movq	%%mm0, %%mm2\n\t"
		"movq	%%mm3, %%mm4\n\t"
		"movq	%%mm3, %%mm5\n\t"
		"psrlq	$3, %%mm0\n\t"
		"psrlq	$3, %%mm3\n\t"
		"pand	%2, %%mm0\n\t"
		"pand	%2, %%mm3\n\t"
		"psrlq	$6, %%mm1\n\t"
		"psrlq	$6, %%mm4\n\t"
		"pand	%%mm6, %%mm1\n\t"
		"pand	%%mm6, %%mm4\n\t"
		"psrlq	$9, %%mm2\n\t"
		"psrlq	$9, %%mm5\n\t"
		"pand	%%mm7, %%mm2\n\t"
		"pand	%%mm7, %%mm5\n\t"
		"por	%%mm1, %%mm0\n\t"
		"por	%%mm4, %%mm3\n\t"
		"por	%%mm2, %%mm0\n\t"
		"por	%%mm5, %%mm3\n\t"
		"psllq	$16, %%mm3\n\t"
		"por	%%mm3, %%mm0\n\t"
		MOVNTQ"	%%mm0, %0\n\t"
		:"=m"(*d):"m"(*s),"m"(blue_15mask):"memory");
		d += 4;
		s += 16;
	}
	while(s < end)
	{
		const int b= *s++;
		const int g= *s++;
		const int r= *s++;
		*d++ = (b>>3) | ((g&0xF8)<<2) | ((r&0xF8)<<7);
	}
	__asm __volatile(SFENCE:::"memory");
	__asm __volatile(EMMS:::"memory");
#else
	unsigned j,i,num_pixels=src_size/4;
	uint16_t *d = (uint16_t *)dst;
	for(i=0,j=0; j<num_pixels; i+=4,j++)
	{
		const int b= src[i+0];
		const int g= src[i+1];
		const int r= src[i+2];

		d[j]= (b>>3) | ((g&0xF8)<<2) | ((r&0xF8)<<7);
	}
#endif
}

static inline void RENAME(rgb24to16)(const uint8_t *src, uint8_t *dst, unsigned src_size)
{
#ifdef HAVE_MMX
	const uint8_t *s = src;
	const uint8_t *end,*mm_end;
	uint16_t *d = (uint16_t *)dst;
	end = s + src_size;
	mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*2))*(MMREG_SIZE*2));
	__asm __volatile(PREFETCH"	%0"::"m"(*src):"memory");
	__asm __volatile(
	    "movq	%0, %%mm7\n\t"
	    "movq	%1, %%mm6\n\t"
	    ::"m"(red_16mask),"m"(green_16mask));
	if(mm_end == end) mm_end -= MMREG_SIZE*2;
	while(s < mm_end)
	{
	    __asm __volatile(
		PREFETCH" 32%1\n\t"
		"movd	%1, %%mm0\n\t"
		"movd	3%1, %%mm3\n\t"
		"punpckldq 6%1, %%mm0\n\t"
		"punpckldq 9%1, %%mm3\n\t"
		"movq	%%mm0, %%mm1\n\t"
		"movq	%%mm0, %%mm2\n\t"
		"movq	%%mm3, %%mm4\n\t"
		"movq	%%mm3, %%mm5\n\t"
		"psrlq	$3, %%mm0\n\t"
		"psrlq	$3, %%mm3\n\t"
		"pand	%2, %%mm0\n\t"
		"pand	%2, %%mm3\n\t"
		"psrlq	$5, %%mm1\n\t"
		"psrlq	$5, %%mm4\n\t"
		"pand	%%mm6, %%mm1\n\t"
		"pand	%%mm6, %%mm4\n\t"
		"psrlq	$8, %%mm2\n\t"
		"psrlq	$8, %%mm5\n\t"
		"pand	%%mm7, %%mm2\n\t"
		"pand	%%mm7, %%mm5\n\t"
		"por	%%mm1, %%mm0\n\t"
		"por	%%mm4, %%mm3\n\t"
		"por	%%mm2, %%mm0\n\t"
		"por	%%mm5, %%mm3\n\t"
		"psllq	$16, %%mm3\n\t"
		"por	%%mm3, %%mm0\n\t"
		MOVNTQ"	%%mm0, %0\n\t"
		:"=m"(*d):"m"(*s),"m"(blue_16mask):"memory");
		d += 4;
		s += 12;
	}
	while(s < end)
	{
		const int b= *s++;
		const int g= *s++;
		const int r= *s++;
		*d++ = (b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8);
	}
	__asm __volatile(SFENCE:::"memory");
	__asm __volatile(EMMS:::"memory");
#else
	unsigned j,i,num_pixels=src_size/3;
	uint16_t *d = (uint16_t *)dst;
	for(i=0,j=0; j<num_pixels; i+=3,j++)
	{
		const int b= src[i+0];
		const int g= src[i+1];
		const int r= src[i+2];

		d[j]= (b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8);
	}
#endif
}

static inline void RENAME(rgb24to15)(const uint8_t *src, uint8_t *dst, unsigned src_size)
{
#ifdef HAVE_MMX
	const uint8_t *s = src;
	const uint8_t *end,*mm_end;
	uint16_t *d = (uint16_t *)dst;
	end = s + src_size;
	mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*2))*(MMREG_SIZE*2));
	__asm __volatile(PREFETCH"	%0"::"m"(*src):"memory");
	__asm __volatile(
	    "movq	%0, %%mm7\n\t"
	    "movq	%1, %%mm6\n\t"
	    ::"m"(red_15mask),"m"(green_15mask));
	if(mm_end == end) mm_end -= MMREG_SIZE*2;
	while(s < mm_end)
	{
	    __asm __volatile(
		PREFETCH" 32%1\n\t"
		"movd	%1, %%mm0\n\t"
		"movd	3%1, %%mm3\n\t"
		"punpckldq 6%1, %%mm0\n\t"
		"punpckldq 9%1, %%mm3\n\t"
		"movq	%%mm0, %%mm1\n\t"
		"movq	%%mm0, %%mm2\n\t"
		"movq	%%mm3, %%mm4\n\t"
		"movq	%%mm3, %%mm5\n\t"
		"psrlq	$3, %%mm0\n\t"
		"psrlq	$3, %%mm3\n\t"
		"pand	%2, %%mm0\n\t"
		"pand	%2, %%mm3\n\t"
		"psrlq	$6, %%mm1\n\t"
		"psrlq	$6, %%mm4\n\t"
		"pand	%%mm6, %%mm1\n\t"
		"pand	%%mm6, %%mm4\n\t"
		"psrlq	$9, %%mm2\n\t"
		"psrlq	$9, %%mm5\n\t"
		"pand	%%mm7, %%mm2\n\t"
		"pand	%%mm7, %%mm5\n\t"
		"por	%%mm1, %%mm0\n\t"
		"por	%%mm4, %%mm3\n\t"
		"por	%%mm2, %%mm0\n\t"
		"por	%%mm5, %%mm3\n\t"
		"psllq	$16, %%mm3\n\t"
		"por	%%mm3, %%mm0\n\t"
		MOVNTQ"	%%mm0, %0\n\t"
		:"=m"(*d):"m"(*s),"m"(blue_15mask):"memory");
		d += 4;
		s += 12;
	}
	while(s < end)
	{
		const int b= *s++;
		const int g= *s++;
		const int r= *s++;
		*d++ = (b>>3) | ((g&0xF8)<<2) | ((r&0xF8)<<7);
	}
	__asm __volatile(SFENCE:::"memory");
	__asm __volatile(EMMS:::"memory");
#else
	unsigned j,i,num_pixels=src_size/3;
	uint16_t *d = (uint16_t *)dst;
	for(i=0,j=0; j<num_pixels; i+=3,j++)
	{
		const int b= src[i+0];
		const int g= src[i+1];
		const int r= src[i+2];

		d[j]= (b>>3) | ((g&0xF8)<<2) | ((r&0xF8)<<7);
	}
#endif
}

static inline void RENAME(rgb32tobgr32)(const uint8_t *src, uint8_t *dst, unsigned int src_size)
{
	int num_pixels= src_size >> 2;
#ifdef HAVE_MMX
	asm volatile (
		"xorl %%eax, %%eax		\n\t"
		".balign 16			\n\t"
		"1:				\n\t"
		PREFETCH" 32(%0, %%eax)		\n\t"
		"movq (%0, %%eax), %%mm0	\n\t"
		"movq %%mm0, %%mm1		\n\t"
		"movq %%mm0, %%mm2		\n\t"
		"pslld $16, %%mm0		\n\t"
		"psrld $16, %%mm1		\n\t"
		"pand mask32r, %%mm0		\n\t"
		"pand mask32g, %%mm2		\n\t"
		"pand mask32b, %%mm1		\n\t"
		"por %%mm0, %%mm2		\n\t"
		"por %%mm1, %%mm2		\n\t"
		MOVNTQ" %%mm2, (%1, %%eax)	\n\t"
		"addl $2, %%eax			\n\t"
		"cmpl %2, %%eax			\n\t"
		" jb 1b				\n\t"
		:: "r" (src), "r"(dst), "r" (num_pixels)
		: "%eax"
	);

	__asm __volatile(SFENCE:::"memory");
	__asm __volatile(EMMS:::"memory");
#else
	int i;
	for(i=0; i<num_pixels; i++)
	{
		dst[4*i + 0] = src[4*i + 2];
		dst[4*i + 1] = src[4*i + 1];
		dst[4*i + 2] = src[4*i + 0];
	}
#endif
}

/**
 *
 * height should be a multiple of 2 and width should be a multiple of 16 (if this is a
 * problem for anyone then tell me, and ill fix it)
 */
static inline void RENAME(yv12toyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
	unsigned int width, unsigned int height,
	unsigned int lumStride, unsigned int chromStride, unsigned int dstStride)
{
	int y;
	const int 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(
			"xorl %%eax, %%eax		\n\t"
			".balign 16			\n\t"
			"1:				\n\t"
			PREFETCH" 32(%1, %%eax, 2)	\n\t"
			PREFETCH" 32(%2, %%eax)		\n\t"
			PREFETCH" 32(%3, %%eax)		\n\t"
			"movq (%2, %%eax), %%mm0	\n\t" // U(0)
			"movq %%mm0, %%mm2		\n\t" // U(0)
			"movq (%3, %%eax), %%mm1	\n\t" // V(0)
			"punpcklbw %%mm1, %%mm0		\n\t" // UVUV UVUV(0)
			"punpckhbw %%mm1, %%mm2		\n\t" // UVUV UVUV(8)

			"movq (%1, %%eax,2), %%mm3	\n\t" // Y(0)
			"movq 8(%1, %%eax,2), %%mm5	\n\t" // Y(8)
			"movq %%mm3, %%mm4		\n\t" // Y(0)
			"movq %%mm5, %%mm6		\n\t" // Y(8)
			"punpcklbw %%mm0, %%mm3		\n\t" // YUYV YUYV(0)
			"punpckhbw %%mm0, %%mm4		\n\t" // YUYV YUYV(4)
			"punpcklbw %%mm2, %%mm5		\n\t" // YUYV YUYV(8)
			"punpckhbw %%mm2, %%mm6		\n\t" // YUYV YUYV(12)

			MOVNTQ" %%mm3, (%0, %%eax, 4)	\n\t"
			MOVNTQ" %%mm4, 8(%0, %%eax, 4)	\n\t"
			MOVNTQ" %%mm5, 16(%0, %%eax, 4)	\n\t"
			MOVNTQ" %%mm6, 24(%0, %%eax, 4)	\n\t"

			"addl $8, %%eax			\n\t"
			"cmpl %4, %%eax			\n\t"
			" jb 1b				\n\t"
			::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "r" (chromWidth)
			: "%eax"
		);
#else
		int i;
		for(i=0; i<chromWidth; i++)
		{
			dst[4*i+0] = ysrc[2*i+0];
			dst[4*i+1] = usrc[i];
			dst[4*i+2] = ysrc[2*i+1];
			dst[4*i+3] = vsrc[i];
		}
#endif
		if(y&1)
		{
			usrc += chromStride;
			vsrc += chromStride;
		}
		ysrc += lumStride;
		dst += dstStride;
	}
#ifdef HAVE_MMX
asm(    EMMS" \n\t"
        SFENCE" \n\t"
        :::"memory");
#endif
}

/**
 *
 * height should be a multiple of 2 and width should be a multiple of 16 (if this is a
 * problem for anyone then tell me, and ill fix it)
 */
static inline void RENAME(yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
	unsigned int width, unsigned int height,
	unsigned int lumStride, unsigned int chromStride, unsigned int srcStride)
{
	int y;
	const int chromWidth= width>>1;
	for(y=0; y<height; y+=2)
	{
#ifdef HAVE_MMX
		asm volatile(
			"xorl %%eax, %%eax		\n\t"
			"pcmpeqw %%mm7, %%mm7		\n\t"
			"psrlw $8, %%mm7		\n\t" // FF,00,FF,00...
			".balign 16			\n\t"
			"1:				\n\t"
			PREFETCH" 64(%0, %%eax, 4)	\n\t"
			"movq (%0, %%eax, 4), %%mm0	\n\t" // YUYV YUYV(0)
			"movq 8(%0, %%eax, 4), %%mm1	\n\t" // YUYV YUYV(4)
			"movq %%mm0, %%mm2		\n\t" // YUYV YUYV(0)
			"movq %%mm1, %%mm3		\n\t" // YUYV YUYV(4)
			"psrlw $8, %%mm0		\n\t" // U0V0 U0V0(0)
			"psrlw $8, %%mm1		\n\t" // U0V0 U0V0(4)
			"pand %%mm7, %%mm2		\n\t" // Y0Y0 Y0Y0(0)
			"pand %%mm7, %%mm3		\n\t" // Y0Y0 Y0Y0(4)
			"packuswb %%mm1, %%mm0		\n\t" // UVUV UVUV(0)
			"packuswb %%mm3, %%mm2		\n\t" // YYYY YYYY(0)

			MOVNTQ" %%mm2, (%1, %%eax, 2)	\n\t"

			"movq 16(%0, %%eax, 4), %%mm1	\n\t" // YUYV YUYV(8)
			"movq 24(%0, %%eax, 4), %%mm2	\n\t" // YUYV YUYV(12)
			"movq %%mm1, %%mm3		\n\t" // YUYV YUYV(8)
			"movq %%mm2, %%mm4		\n\t" // YUYV YUYV(12)
			"psrlw $8, %%mm1		\n\t" // U0V0 U0V0(8)
			"psrlw $8, %%mm2		\n\t" // U0V0 U0V0(12)
			"pand %%mm7, %%mm3		\n\t" // Y0Y0 Y0Y0(8)
			"pand %%mm7, %%mm4		\n\t" // Y0Y0 Y0Y0(12)
			"packuswb %%mm2, %%mm1		\n\t" // UVUV UVUV(8)
			"packuswb %%mm4, %%mm3		\n\t" // YYYY YYYY(8)

			MOVNTQ" %%mm3, 8(%1, %%eax, 2)	\n\t"

			"movq %%mm0, %%mm2		\n\t" // UVUV UVUV(0)
			"movq %%mm1, %%mm3		\n\t" // UVUV UVUV(8)
			"psrlw $8, %%mm0		\n\t" // V0V0 V0V0(0)
			"psrlw $8, %%mm1		\n\t" // V0V0 V0V0(8)
			"pand %%mm7, %%mm2		\n\t" // U0U0 U0U0(0)
			"pand %%mm7, %%mm3		\n\t" // U0U0 U0U0(8)
			"packuswb %%mm1, %%mm0		\n\t" // VVVV VVVV(0)
			"packuswb %%mm3, %%mm2		\n\t" // UUUU UUUU(0)

			MOVNTQ" %%mm0, (%3, %%eax)	\n\t"
			MOVNTQ" %%mm2, (%2, %%eax)	\n\t"

			"addl $8, %%eax			\n\t"
			"cmpl %4, %%eax			\n\t"
			" jb 1b				\n\t"
			::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "r" (chromWidth)
			: "memory", "%eax"
		);

		ydst += lumStride;
		src  += srcStride;

		asm volatile(
			"xorl %%eax, %%eax		\n\t"
			".balign 16			\n\t"
			"1:				\n\t"
			PREFETCH" 64(%0, %%eax, 4)	\n\t"
			"movq (%0, %%eax, 4), %%mm0	\n\t" // YUYV YUYV(0)
			"movq 8(%0, %%eax, 4), %%mm1	\n\t" // YUYV YUYV(4)
			"movq 16(%0, %%eax, 4), %%mm2	\n\t" // YUYV YUYV(8)
			"movq 24(%0, %%eax, 4), %%mm3	\n\t" // YUYV YUYV(12)
			"pand %%mm7, %%mm0		\n\t" // Y0Y0 Y0Y0(0)
			"pand %%mm7, %%mm1		\n\t" // Y0Y0 Y0Y0(4)
			"pand %%mm7, %%mm2		\n\t" // Y0Y0 Y0Y0(8)
			"pand %%mm7, %%mm3		\n\t" // Y0Y0 Y0Y0(12)
			"packuswb %%mm1, %%mm0		\n\t" // YYYY YYYY(0)
			"packuswb %%mm3, %%mm2		\n\t" // YYYY YYYY(8)

			MOVNTQ" %%mm0, (%1, %%eax, 2)	\n\t"
			MOVNTQ" %%mm2, 8(%1, %%eax, 2)	\n\t"

			"addl $8, %%eax			\n\t"
			"cmpl %4, %%eax			\n\t"
			" jb 1b				\n\t"

			::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "r" (chromWidth)
			: "memory", "%eax"
		);
#else
		int i;
		for(i=0; i<chromWidth; i++)
		{
			ydst[2*i+0] 	= src[4*i+0];
			udst[i] 	= src[4*i+1];
			ydst[2*i+1] 	= src[4*i+2];
			vdst[i] 	= src[4*i+3];
		}
		ydst += lumStride;
		src  += srcStride;

		for(i=0; i<chromWidth; i++)
		{
			ydst[2*i+0] 	= src[4*i+0];
			ydst[2*i+1] 	= src[4*i+2];
		}
#endif
		udst += chromStride;
		vdst += chromStride;
		ydst += lumStride;
		src  += srcStride;
	}
#ifdef HAVE_MMX
asm volatile(   EMMS" \n\t"
        	SFENCE" \n\t"
        	:::"memory");
#endif
}

/**
 *
 * height should be a multiple of 2 and width should be a multiple of 16 (if this is a
 * problem for anyone then tell me, and ill fix it)
 * chrominance data is only taken from every secound line others are ignored FIXME write HQ version
 */
static inline void RENAME(uyvytoyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
	unsigned int width, unsigned int height,
	unsigned int lumStride, unsigned int chromStride, unsigned int srcStride)
{
	int y;
	const int chromWidth= width>>1;
	for(y=0; y<height; y+=2)
	{
#ifdef HAVE_MMX
		asm volatile(
			"xorl %%eax, %%eax		\n\t"
			"pcmpeqw %%mm7, %%mm7		\n\t"
			"psrlw $8, %%mm7		\n\t" // FF,00,FF,00...
			".balign 16			\n\t"
			"1:				\n\t"
			PREFETCH" 64(%0, %%eax, 4)	\n\t"
			"movq (%0, %%eax, 4), %%mm0	\n\t" // UYVY UYVY(0)
			"movq 8(%0, %%eax, 4), %%mm1	\n\t" // UYVY UYVY(4)
			"movq %%mm0, %%mm2		\n\t" // UYVY UYVY(0)
			"movq %%mm1, %%mm3		\n\t" // UYVY UYVY(4)
			"pand %%mm7, %%mm0		\n\t" // U0V0 U0V0(0)
			"pand %%mm7, %%mm1		\n\t" // U0V0 U0V0(4)
			"psrlw $8, %%mm2		\n\t" // Y0Y0 Y0Y0(0)
			"psrlw $8, %%mm3		\n\t" // Y0Y0 Y0Y0(4)
			"packuswb %%mm1, %%mm0		\n\t" // UVUV UVUV(0)
			"packuswb %%mm3, %%mm2		\n\t" // YYYY YYYY(0)

			MOVNTQ" %%mm2, (%1, %%eax, 2)	\n\t"

			"movq 16(%0, %%eax, 4), %%mm1	\n\t" // UYVY UYVY(8)
			"movq 24(%0, %%eax, 4), %%mm2	\n\t" // UYVY UYVY(12)
			"movq %%mm1, %%mm3		\n\t" // UYVY UYVY(8)
			"movq %%mm2, %%mm4		\n\t" // UYVY UYVY(12)
			"pand %%mm7, %%mm1		\n\t" // U0V0 U0V0(8)
			"pand %%mm7, %%mm2		\n\t" // U0V0 U0V0(12)
			"psrlw $8, %%mm3		\n\t" // Y0Y0 Y0Y0(8)
			"psrlw $8, %%mm4		\n\t" // Y0Y0 Y0Y0(12)
			"packuswb %%mm2, %%mm1		\n\t" // UVUV UVUV(8)
			"packuswb %%mm4, %%mm3		\n\t" // YYYY YYYY(8)

			MOVNTQ" %%mm3, 8(%1, %%eax, 2)	\n\t"

			"movq %%mm0, %%mm2		\n\t" // UVUV UVUV(0)
			"movq %%mm1, %%mm3		\n\t" // UVUV UVUV(8)
			"psrlw $8, %%mm0		\n\t" // V0V0 V0V0(0)
			"psrlw $8, %%mm1		\n\t" // V0V0 V0V0(8)
			"pand %%mm7, %%mm2		\n\t" // U0U0 U0U0(0)
			"pand %%mm7, %%mm3		\n\t" // U0U0 U0U0(8)
			"packuswb %%mm1, %%mm0		\n\t" // VVVV VVVV(0)
			"packuswb %%mm3, %%mm2		\n\t" // UUUU UUUU(0)

			MOVNTQ" %%mm0, (%3, %%eax)	\n\t"
			MOVNTQ" %%mm2, (%2, %%eax)	\n\t"

			"addl $8, %%eax			\n\t"
			"cmpl %4, %%eax			\n\t"
			" jb 1b				\n\t"
			::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "r" (chromWidth)
			: "memory", "%eax"
		);

		ydst += lumStride;
		src  += srcStride;

		asm volatile(
			"xorl %%eax, %%eax		\n\t"
			".balign 16			\n\t"
			"1:				\n\t"
			PREFETCH" 64(%0, %%eax, 4)	\n\t"
			"movq (%0, %%eax, 4), %%mm0	\n\t" // YUYV YUYV(0)
			"movq 8(%0, %%eax, 4), %%mm1	\n\t" // YUYV YUYV(4)
			"movq 16(%0, %%eax, 4), %%mm2	\n\t" // YUYV YUYV(8)
			"movq 24(%0, %%eax, 4), %%mm3	\n\t" // YUYV YUYV(12)
			"psrlw $8, %%mm0		\n\t" // Y0Y0 Y0Y0(0)
			"psrlw $8, %%mm1		\n\t" // Y0Y0 Y0Y0(4)
			"psrlw $8, %%mm2		\n\t" // Y0Y0 Y0Y0(8)
			"psrlw $8, %%mm3		\n\t" // Y0Y0 Y0Y0(12)
			"packuswb %%mm1, %%mm0		\n\t" // YYYY YYYY(0)
			"packuswb %%mm3, %%mm2		\n\t" // YYYY YYYY(8)

			MOVNTQ" %%mm0, (%1, %%eax, 2)	\n\t"
			MOVNTQ" %%mm2, 8(%1, %%eax, 2)	\n\t"

			"addl $8, %%eax			\n\t"
			"cmpl %4, %%eax			\n\t"
			" jb 1b				\n\t"

			::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "r" (chromWidth)
			: "memory", "%eax"
		);
#else
		int i;
		for(i=0; i<chromWidth; i++)
		{
			udst[i] 	= src[4*i+0];
			ydst[2*i+0] 	= src[4*i+1];
			vdst[i] 	= src[4*i+2];
			ydst[2*i+1] 	= src[4*i+3];
		}
		ydst += lumStride;
		src  += srcStride;

		for(i=0; i<chromWidth; i++)
		{
			ydst[2*i+0] 	= src[4*i+1];
			ydst[2*i+1] 	= src[4*i+3];
		}
#endif
		udst += chromStride;
		vdst += chromStride;
		ydst += lumStride;
		src  += srcStride;
	}
#ifdef HAVE_MMX
asm volatile(   EMMS" \n\t"
        	SFENCE" \n\t"
        	:::"memory");
#endif
}

/**
 *
 * height should be a multiple of 2 and width should be a multiple of 2 (if this is a
 * problem for anyone then tell me, and ill fix it)
 * chrominance data is only taken from every secound line others are ignored FIXME write HQ version
 */
static inline void RENAME(rgb24toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
	unsigned int width, unsigned int height,
	unsigned int lumStride, unsigned int chromStride, unsigned int srcStride)
{
	int y;
	const int chromWidth= width>>1;
	for(y=0; y<height; y+=2)
	{
		int i;
		for(i=0; i<chromWidth; i++)
		{
			unsigned int b= src[6*i+0];
			unsigned int g= src[6*i+1];
			unsigned int r= src[6*i+2];

			unsigned int Y  =  RY*r + GY*g + BY*b + 16;
			unsigned int V  =  RV*r + GV*g + BV*b + 128;
			unsigned int U  =  RU*r + GU*g + BU*b + 128;

			udst[i] 	= U;
			vdst[i] 	= V;
			ydst[2*i] 	= Y;

			b= src[6*i+3];
			g= src[6*i+4];
			r= src[6*i+5];

			Y  =  RY*r + GY*g + BY*b + 16;
			ydst[2*i+1] 	= Y;
		}
		ydst += lumStride;
		src  += srcStride;

		for(i=0; i<chromWidth; i++)
		{
			unsigned int b= src[6*i+0];
			unsigned int g= src[6*i+1];
			unsigned int r= src[6*i+2];

			unsigned int Y  =  RY*r + GY*g + BY*b + 16;

			ydst[2*i] 	= Y;

			b= src[6*i+3];
			g= src[6*i+4];
			r= src[6*i+5];

			Y  =  RY*r + GY*g + BY*b + 16;
			ydst[2*i+1] 	= Y;
		}
		udst += chromStride;
		vdst += chromStride;
		ydst += lumStride;
		src  += srcStride;
	}
}