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📄 swscale_template.c

📁 从FFMPEG转换而来的H264解码程序,VC下编译..
💻 C
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				WRITEBGR16(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"
			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
	case IMGFMT_YUY2:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2PACKED(%%REGBP, %5)
				WRITEYUY2(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"
			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
	default: break;
	}
#endif //HAVE_MMX
YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB2_C, YSCALE_YUV_2_PACKED2_C)
}

/**
 * YV12 to RGB without scaling or interpolating
 */
static inline void RENAME(yuv2packed1)(SwsContext *c, uint16_t *buf0, uint16_t *uvbuf0, uint16_t *uvbuf1,
			    uint8_t *dest, int dstW, int uvalpha, int dstFormat, int flags, int y)
{
	const int yalpha1=0;
	int i;

	uint16_t *buf1= buf0; //FIXME needed for the rgb1/bgr1
	const int yalpha= 4096; //FIXME ...

	if(flags&SWS_FULL_CHR_H_INT)
	{
		RENAME(yuv2packed2)(c, buf0, buf0, uvbuf0, uvbuf1, dest, dstW, 0, uvalpha, y);
		return;
	}

#ifdef HAVE_MMX
	if( uvalpha < 2048 ) // note this is not correct (shifts chrominance by 0.5 pixels) but its a bit faster
	{
		switch(dstFormat)
		{
		case IMGFMT_BGR32:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1(%%REGBP, %5)
				WRITEBGR32(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_BGR24:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1(%%REGBP, %5)
				WRITEBGR24(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_BGR15:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1(%%REGBP, %5)
		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
				"paddusb "MANGLE(b5Dither)", %%mm2\n\t"
				"paddusb "MANGLE(g5Dither)", %%mm4\n\t"
				"paddusb "MANGLE(r5Dither)", %%mm5\n\t"
#endif
				WRITEBGR15(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_BGR16:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1(%%REGBP, %5)
		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
				"paddusb "MANGLE(b5Dither)", %%mm2\n\t"
				"paddusb "MANGLE(g6Dither)", %%mm4\n\t"
				"paddusb "MANGLE(r5Dither)", %%mm5\n\t"
#endif

				WRITEBGR16(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_YUY2:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2PACKED1(%%REGBP, %5)
				WRITEYUY2(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		}
	}
	else
	{
		switch(dstFormat)
		{
		case IMGFMT_BGR32:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1b(%%REGBP, %5)
				WRITEBGR32(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_BGR24:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1b(%%REGBP, %5)
				WRITEBGR24(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_BGR15:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1b(%%REGBP, %5)
		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
				"paddusb "MANGLE(b5Dither)", %%mm2\n\t"
				"paddusb "MANGLE(g5Dither)", %%mm4\n\t"
				"paddusb "MANGLE(r5Dither)", %%mm5\n\t"
#endif
				WRITEBGR15(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_BGR16:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2RGB1b(%%REGBP, %5)
		/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
				"paddusb "MANGLE(b5Dither)", %%mm2\n\t"
				"paddusb "MANGLE(g6Dither)", %%mm4\n\t"
				"paddusb "MANGLE(r5Dither)", %%mm5\n\t"
#endif

				WRITEBGR16(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		case IMGFMT_YUY2:
			asm volatile(
				"mov %%"REG_b", "ESP_OFFSET"(%5)	\n\t"
				"mov %4, %%"REG_b"			\n\t"
                                "push %%"REG_BP"                        \n\t"
				YSCALEYUV2PACKED1b(%%REGBP, %5)
				WRITEYUY2(%%REGb, 8280(%5), %%REGBP)
                                "pop %%"REG_BP"                         \n\t"
				"mov "ESP_OFFSET"(%5), %%"REG_b"	\n\t"

			:: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
			"a" (&c->redDither)
			);
			return;
		}
	}
#endif
	if( uvalpha < 2048 )
	{
		YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1_C, YSCALE_YUV_2_PACKED1_C)
	}else{
		YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1B_C, YSCALE_YUV_2_PACKED1B_C)
	}
}

//FIXME yuy2* can read upto 7 samples to much

static inline void RENAME(yuy2ToY)(uint8_t *dst, uint8_t *src, long width)
{
#ifdef HAVE_MMX
	asm volatile(
		"movq "MANGLE(bm01010101)", %%mm2\n\t"
		"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"
		"pand %%mm2, %%mm0		\n\t"
		"pand %%mm2, %%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" (-width), "r" (src+width*2), "r" (dst+width)
		: "%"REG_a
	);
#else
	int i;
	for(i=0; i<width; i++)
		dst[i]= src[2*i];
#endif
}

static inline void RENAME(yuy2ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
{
#if defined (HAVE_MMX2) || defined (HAVE_3DNOW)
	asm volatile(
		"movq "MANGLE(bm01010101)", %%mm4\n\t"
		"mov %0, %%"REG_a"		\n\t"
		"1:				\n\t"
		"movq (%1, %%"REG_a",4), %%mm0	\n\t"
		"movq 8(%1, %%"REG_a",4), %%mm1	\n\t"
		"movq (%2, %%"REG_a",4), %%mm2	\n\t"
		"movq 8(%2, %%"REG_a",4), %%mm3	\n\t"
		PAVGB(%%mm2, %%mm0)
		PAVGB(%%mm3, %%mm1)
		"psrlw $8, %%mm0		\n\t"
		"psrlw $8, %%mm1		\n\t"
		"packuswb %%mm1, %%mm0		\n\t"
		"movq %%mm0, %%mm1		\n\t"
		"psrlw $8, %%mm0		\n\t"
		"pand %%mm4, %%mm1		\n\t"
		"packuswb %%mm0, %%mm0		\n\t"
		"packuswb %%mm1, %%mm1		\n\t"
		"movd %%mm0, (%4, %%"REG_a")	\n\t"
		"movd %%mm1, (%3, %%"REG_a")	\n\t"
		"add $4, %%"REG_a"		\n\t"
		" js 1b				\n\t"
		: : "g" (-width), "r" (src1+width*4), "r" (src2+width*4), "r" (dstU+width), "r" (dstV+width)
		: "%"REG_a
	);
#else
	int i;
	for(i=0; i<width; i++)
	{
		dstU[i]= (src1[4*i + 1] + src2[4*i + 1])>>1;
		dstV[i]= (src1[4*i + 3] + src2[4*i + 3])>>1;
	}
#endif
}

//this is allmost identical to the previous, end exists only cuz yuy2ToY/UV)(dst, src+1, ...) would have 100% unaligned accesses
static inline void RENAME(uyvyToY)(uint8_t *dst, uint8_t *src, long width)
{
#ifdef HAVE_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" (-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
}

static inline void RENAME(uyvyToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
{
#if defined (HAVE_MMX2) || defined (HAVE_3DNOW)
	asm volatile(
		"movq "MANGLE(bm01010101)", %%mm4\n\t"
		"mov %0, %%"REG_a"		\n\t"
		"1:				\n\t"
		"movq (%1, %%"REG_a",4), %%mm0	\n\t"
		"movq 8(%1, %%"REG_a",4), %%mm1	\n\t"
		"movq (%2, %%"REG_a",4), %%mm2	\n\t"
		"movq 8(%2, %%"REG_a",4), %%mm3	\n\t"
		PAVGB(%%mm2, %%mm0)
		PAVGB(%%mm3, %%mm1)
		"pand %%mm4, %%mm0		\n\t"
		"pand %%mm4, %%mm1		\n\t"
		"packuswb %%mm1, %%mm0		\n\t"
		"movq %%mm0, %%mm1		\n\t"
		"psrlw $8, %%mm0		\n\t"
		"pand %%mm4, %%mm1		\n\t"
		"packuswb %%mm0, %%mm0		\n\t"
		"packuswb %%mm1, %%mm1		\n\t"
		"movd %%mm0, (%4, %%"REG_a")	\n\t"
		"movd %%mm1, (%3, %%"REG_a")	\n\t"
		"add $4, %%"REG_a"		\n\t"
		" js 1b				\n\t"
		: : "g" (-width), "r" (src1+width*4), "r" (src2+width*4), "r" (dstU+width), "r" (dstV+width)
		: "%"REG_a
	);
#else
	int i;
	for(i=0; i<width; i++)
	{
		dstU[i]= (src1[4*i + 0] + src2[4*i + 0])>>1;
		dstV[i]= (src1[4*i + 2] + src2[4*i + 2])>>1;
	}
#endif
}

static inline void RENAME(bgr32ToY)(uint8_t *dst, uint8_t *src, int width)
{
	int i;
	for(i=0; i<width; i++)
	{
		int b=  ((uint32_t*)
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