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📄 rgb2rgb_template.c

📁 从FFMPEG转换而来的H264解码程序,VC下编译..
💻 C
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/*
 *
 *  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)
 *  lot of big-endian byteorder fixes by Alex Beregszaszi
 */

#include <stddef.h>
#include <inttypes.h> /* for __WORDSIZE */

#ifndef __WORDSIZE
// #warning You have misconfigured system and probably will lose performance!
#define __WORDSIZE MP_WORDSIZE
#endif

#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,stride_t src_size)
{
  uint8_t *dest = dst;
  const uint8_t *s = src;
  const uint8_t *end;
#ifdef HAVE_MMX
  const uint8_t *mm_end;
#endif
  end = s + src_size;
#ifdef HAVE_MMX
  __asm __volatile(PREFETCH"	%0"::"m"(*s):"memory");
  mm_end = end - 27;
  __asm __volatile("movq	%0, %%mm7"::"m"(mask32):"memory");
  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)
  {
#ifdef WORDS_BIGENDIAN
    /* RGB24 (= R,G,B) -> RGB32 (= A,B,G,R) */
    *dest++ = 0;
    *dest++ = s[2];
    *dest++ = s[1];
    *dest++ = s[0];
    s+=3;
#else
    *dest++ = *s++;
    *dest++ = *s++;
    *dest++ = *s++;
    *dest++ = 0;
#endif
  }
}

static inline void RENAME(rgb32to24)(const uint8_t *src,uint8_t *dst,stride_t src_size)
{
  uint8_t *dest = dst;
  const uint8_t *s = src;
  const uint8_t *end;
#ifdef HAVE_MMX
  const uint8_t *mm_end;
#endif
  end = s + src_size;
#ifdef HAVE_MMX
  __asm __volatile(PREFETCH"	%0"::"m"(*s):"memory");
  mm_end = end - 31;
  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)
  {
#ifdef WORDS_BIGENDIAN
    /* RGB32 (= A,B,G,R) -> RGB24 (= R,G,B) */
    s++;
    dest[2] = *s++;
    dest[1] = *s++;
    dest[0] = *s++;
    dest += 3;
#else
    *dest++ = *s++;
    *dest++ = *s++;
    *dest++ = *s++;
    s++;
#endif
  }
}

/*
 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,stride_t src_size)
{
  register const uint8_t* s=src;
  register uint8_t* d=dst;
  register const uint8_t *end;
  const uint8_t *mm_end;
  end = s + src_size;
#ifdef HAVE_MMX
  __asm __volatile(PREFETCH"	%0"::"m"(*s));
  __asm __volatile("movq	%0, %%mm4"::"m"(mask15s));
  mm_end = end - 15;
  while(s<mm_end)
  {
	__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)
		:"m"(*s)
		);
	d+=16;
	s+=16;
  }
  __asm __volatile(SFENCE:::"memory");
  __asm __volatile(EMMS:::"memory");
#endif
    mm_end = end - 3;
    while(s < mm_end)
    {
	register unsigned x= *((uint32_t *)s);
	*((uint32_t *)d) = (x&0x7FFF7FFF) + (x&0x7FE07FE0);
	d+=4;
	s+=4;
    }
    if(s < end)
    {
	register unsigned short x= *((uint16_t *)s);
	*((uint16_t *)d) = (x&0x7FFF) + (x&0x7FE0);
    }
}

static inline void RENAME(rgb16to15)(const uint8_t *src,uint8_t *dst,stride_t src_size)
{
  register const uint8_t* s=src;
  register uint8_t* d=dst;
  register const uint8_t *end;
  const uint8_t *mm_end;
  end = s + src_size;
#ifdef HAVE_MMX
  __asm __volatile(PREFETCH"	%0"::"m"(*s));
  __asm __volatile("movq	%0, %%mm7"::"m"(mask15rg));
  __asm __volatile("movq	%0, %%mm6"::"m"(mask15b));
  mm_end = end - 15;
  while(s<mm_end)
  {
	__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"
		"psrlq	$1, %%mm0\n\t"
		"psrlq	$1, %%mm2\n\t"
		"pand	%%mm7, %%mm0\n\t"
		"pand	%%mm7, %%mm2\n\t"
		"pand	%%mm6, %%mm1\n\t"
		"pand	%%mm6, %%mm3\n\t"
		"por	%%mm1, %%mm0\n\t"
		"por	%%mm3, %%mm2\n\t"
		MOVNTQ"	%%mm0, %0\n\t"
		MOVNTQ"	%%mm2, 8%0"
		:"=m"(*d)
		:"m"(*s)
		);
	d+=16;
	s+=16;
  }
  __asm __volatile(SFENCE:::"memory");
  __asm __volatile(EMMS:::"memory");
#endif
    mm_end = end - 3;
    while(s < mm_end)
    {
	register uint32_t x= *((uint32_t *)s);
	*((uint32_t *)d) = ((x>>1)&0x7FE07FE0) | (x&0x001F001F);
	s+=4;
	d+=4;
    }
    if(s < end)
    {
	register uint16_t x= *((uint16_t *)s);
	*((uint16_t *)d) = ((x>>1)&0x7FE0) | (x&0x001F);
	s+=2;
	d+=2;
    }
}

static inline void RENAME(rgb32to16)(const uint8_t *src, uint8_t *dst, stride_t src_size)
{
	const uint8_t *s = src;
	const uint8_t *end;
#ifdef HAVE_MMX
	const uint8_t *mm_end;
#endif
	uint16_t *d = (uint16_t *)dst;
	end = s + src_size;
#ifdef HAVE_MMX
	mm_end = end - 15;
#if 1 //is faster only if multiplies are reasonable fast (FIXME figure out on which cpus this is faster, on Athlon its slightly faster)
	asm volatile(
		"movq %3, %%mm5			\n\t"
		"movq %4, %%mm6			\n\t"
		"movq %5, %%mm7			\n\t"
		".balign 16			\n\t"
		"1:				\n\t"
		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 %%mm3, %%mm4		\n\t"
		"pand %%mm6, %%mm0		\n\t"
		"pand %%mm6, %%mm3		\n\t"
		"pmaddwd %%mm7, %%mm0		\n\t"
		"pmaddwd %%mm7, %%mm3		\n\t"
		"pand %%mm5, %%mm1		\n\t"
		"pand %%mm5, %%mm4		\n\t"
		"por %%mm1, %%mm0		\n\t"
		"por %%mm4, %%mm3		\n\t"
		"psrld $5, %%mm0		\n\t"
		"pslld $11, %%mm3		\n\t"
		"por %%mm3, %%mm0		\n\t"
		MOVNTQ"	%%mm0, (%0)		\n\t"
		"add $16, %1			\n\t"
		"add $8, %0			\n\t"
		"cmp %2, %1			\n\t"
		" jb 1b				\n\t"
		: "+r" (d), "+r"(s)
		: "r" (mm_end), "m" (mask3216g), "m" (mask3216br), "m" (mul3216)
	);
#else
	__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;
	}
#endif
	__asm __volatile(SFENCE:::"memory");
	__asm __volatile(EMMS:::"memory");
#endif
	while(s < end)
	{
		register int rgb = *(uint32_t*)s; s += 4;
		*d++ = ((rgb&0xFF)>>3) + ((rgb&0xFC00)>>5) + ((rgb&0xF80000)>>8);
	}
}

static inline void RENAME(rgb32tobgr16)(const uint8_t *src, uint8_t *dst, stride_t src_size)
{
	const uint8_t *s = src;
	const uint8_t *end;
#ifdef HAVE_MMX
	const uint8_t *mm_end;
#endif
	uint16_t *d = (uint16_t *)dst;
	end = s + src_size;
#ifdef HAVE_MMX
	__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));
	mm_end = end - 15;
	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"
		"psllq	$8, %%mm0\n\t"
		"psllq	$8, %%mm3\n\t"
		"pand	%%mm7, %%mm0\n\t"
		"pand	%%mm7, %%mm3\n\t"
		"psrlq	$5, %%mm1\n\t"
		"psrlq	$5, %%mm4\n\t"
		"pand	%%mm6, %%mm1\n\t"
		"pand	%%mm6, %%mm4\n\t"
		"psrlq	$19, %%mm2\n\t"
		"psrlq	$19, %%mm5\n\t"
		"pand	%2, %%mm2\n\t"
		"pand	%2, %%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;
	}
	__asm __volatile(SFENCE:::"memory");
	__asm __volatile(EMMS:::"memory");
#endif
	while(s < end)
	{
		register int rgb = *(uint32_t*)s; s += 4;
		*d++ = ((rgb&0xF8)<<8) + ((rgb&0xFC00)>>5) + ((rgb&0xF80000)>>19);
	}
}

static inline void RENAME(rgb32to15)(const uint8_t *src, uint8_t *dst, stride_t src_size)
{
	const uint8_t *s = src;
	const uint8_t *end;
#ifdef HAVE_MMX
	const uint8_t *mm_end;
#endif
	uint16_t *d = (uint16_t *)dst;
	end = s + src_size;
#ifdef HAVE_MMX
	mm_end = end - 15;
#if 1 //is faster only if multiplies are reasonable fast (FIXME figure out on which cpus this is faster, on Athlon its slightly faster)
	asm volatile(
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