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📄 swscale.c

📁 从FFMPEG转换而来的H264解码程序,VC下编译..
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			type *r, *b, *g;\
			r = c->table_rV[V];\
			g = c->table_gU[U] + c->table_gV[V];\
			b = c->table_bU[U];\

#define YSCALE_YUV_2_ANYRGB_C(func, func2)\
	switch(c->dstFormat)\
	{\
	case IMGFMT_BGR32:\
	case IMGFMT_RGB32:\
		func(uint32_t)\
			((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\
			((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\
		}		\
		break;\
	case IMGFMT_RGB24:\
		func(uint8_t)\
			((uint8_t*)dest)[0]= r[Y1];\
			((uint8_t*)dest)[1]= g[Y1];\
			((uint8_t*)dest)[2]= b[Y1];\
			((uint8_t*)dest)[3]= r[Y2];\
			((uint8_t*)dest)[4]= g[Y2];\
			((uint8_t*)dest)[5]= b[Y2];\
			dest+=6;\
		}\
		break;\
	case IMGFMT_BGR24:\
		func(uint8_t)\
			((uint8_t*)dest)[0]= b[Y1];\
			((uint8_t*)dest)[1]= g[Y1];\
			((uint8_t*)dest)[2]= r[Y1];\
			((uint8_t*)dest)[3]= b[Y2];\
			((uint8_t*)dest)[4]= g[Y2];\
			((uint8_t*)dest)[5]= r[Y2];\
			dest+=6;\
		}\
		break;\
	case IMGFMT_RGB16:\
	case IMGFMT_BGR16:\
		{\
			const int dr1= dither_2x2_8[y&1    ][0];\
			const int dg1= dither_2x2_4[y&1    ][0];\
			const int db1= dither_2x2_8[(y&1)^1][0];\
			const int dr2= dither_2x2_8[y&1    ][1];\
			const int dg2= dither_2x2_4[y&1    ][1];\
			const int db2= dither_2x2_8[(y&1)^1][1];\
			func(uint16_t)\
				((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
				((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
			}\
		}\
		break;\
	case IMGFMT_RGB15:\
	case IMGFMT_BGR15:\
		{\
			const int dr1= dither_2x2_8[y&1    ][0];\
			const int dg1= dither_2x2_8[y&1    ][1];\
			const int db1= dither_2x2_8[(y&1)^1][0];\
			const int dr2= dither_2x2_8[y&1    ][1];\
			const int dg2= dither_2x2_8[y&1    ][0];\
			const int db2= dither_2x2_8[(y&1)^1][1];\
			func(uint16_t)\
				((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\
				((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\
			}\
		}\
		break;\
	case IMGFMT_RGB8:\
	case IMGFMT_BGR8:\
		{\
			const uint8_t * const d64= dither_8x8_73[y&7];\
			const uint8_t * const d32= dither_8x8_32[y&7];\
			func(uint8_t)\
				((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\
				((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\
			}\
		}\
		break;\
	case IMGFMT_RGB4:\
	case IMGFMT_BGR4:\
		{\
			const uint8_t * const d64= dither_8x8_73 [y&7];\
			const uint8_t * const d128=dither_8x8_220[y&7];\
			func(uint8_t)\
				((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\
				                 + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\
			}\
		}\
		break;\
	case IMGFMT_RG4B:\
	case IMGFMT_BG4B:\
		{\
			const uint8_t * const d64= dither_8x8_73 [y&7];\
			const uint8_t * const d128=dither_8x8_220[y&7];\
			func(uint8_t)\
				((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\
				((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\
			}\
		}\
		break;\
	case IMGFMT_RGB1:\
	case IMGFMT_BGR1:\
		{\
			const uint8_t * const d128=dither_8x8_220[y&7];\
			uint8_t *g= c->table_gU[128] + c->table_gV[128];\
			for(i=0; i<dstW-7; i+=8){\
				int acc;\
				acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\
				acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\
				acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\
				acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\
				acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\
				acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\
				acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\
				acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\
				((uint8_t*)dest)[0]= acc;\
				dest++;\
			}\
\
/*\
((uint8_t*)dest)-= dstW>>4;\
{\
			int acc=0;\
			int left=0;\
			static int top[1024];\
			static int last_new[1024][1024];\
			static int last_in3[1024][1024];\
			static int drift[1024][1024];\
			int topLeft=0;\
			int shift=0;\
			int count=0;\
			const uint8_t * const d128=dither_8x8_220[y&7];\
			int error_new=0;\
			int error_in3=0;\
			int f=0;\
			\
			for(i=dstW>>1; i<dstW; i++){\
				int in= ((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19);\
				int in2 = (76309 * (in - 16) + 32768) >> 16;\
				int in3 = (in2 < 0) ? 0 : ((in2 > 255) ? 255 : in2);\
				int old= (left*7 + topLeft + top[i]*5 + top[i+1]*3)/20 + in3\
					+ (last_new[y][i] - in3)*f/256;\
				int new= old> 128 ? 255 : 0;\
\
				error_new+= ABS(last_new[y][i] - new);\
				error_in3+= ABS(last_in3[y][i] - in3);\
				f= error_new - error_in3*4;\
				if(f<0) f=0;\
				if(f>256) f=256;\
\
				topLeft= top[i];\
				left= top[i]= old - new;\
				last_new[y][i]= new;\
				last_in3[y][i]= in3;\
\
				acc+= acc + (new&1);\
				if((i&7)==6){\
					((uint8_t*)dest)[0]= acc;\
					((uint8_t*)dest)++;\
				}\
			}\
}\
*/\
		}\
		break;\
	case IMGFMT_YUY2:\
		func2\
			((uint8_t*)dest)[2*i2+0]= Y1;\
			((uint8_t*)dest)[2*i2+1]= U;\
			((uint8_t*)dest)[2*i2+2]= Y2;\
			((uint8_t*)dest)[2*i2+3]= V;\
		}		\
		break;\
	case IMGFMT_UYVY:\
		func2\
			((uint8_t*)dest)[2*i2+0]= U;\
			((uint8_t*)dest)[2*i2+1]= Y1;\
			((uint8_t*)dest)[2*i2+2]= V;\
			((uint8_t*)dest)[2*i2+3]= Y2;\
		}		\
		break;\
	case IMGFMT_VYUY:\
		func2\
			((uint8_t*)dest)[2*i2+0]= V;\
			((uint8_t*)dest)[2*i2+1]= Y1;\
			((uint8_t*)dest)[2*i2+2]= U;\
			((uint8_t*)dest)[2*i2+3]= Y2;\
		}		\
		break;\
	case IMGFMT_YVYU:\
		func2\
			((uint8_t*)dest)[2*i2+0]= Y1;\
			((uint8_t*)dest)[2*i2+1]= V;\
			((uint8_t*)dest)[2*i2+2]= Y2;\
			((uint8_t*)dest)[2*i2+3]= U;\
		}		\
		break;\
	}\


static inline void yuv2packedXinC(SwsContext *c, int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
				    int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
				    uint8_t *dest, int dstW, int y)
{
	int i;
	switch(c->dstFormat)
	{
	case IMGFMT_RGB32:
	case IMGFMT_BGR32:
		YSCALE_YUV_2_RGBX_C(uint32_t)
			((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];
			((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];
		}
		break;
	case IMGFMT_RGB24:
		YSCALE_YUV_2_RGBX_C(uint8_t)
			((uint8_t*)dest)[0]= r[Y1];
			((uint8_t*)dest)[1]= g[Y1];
			((uint8_t*)dest)[2]= b[Y1];
			((uint8_t*)dest)[3]= r[Y2];
			((uint8_t*)dest)[4]= g[Y2];
			((uint8_t*)dest)[5]= b[Y2];
			dest+=6;
		}
		break;
	case IMGFMT_BGR24:
		YSCALE_YUV_2_RGBX_C(uint8_t)
			((uint8_t*)dest)[0]= b[Y1];
			((uint8_t*)dest)[1]= g[Y1];
			((uint8_t*)dest)[2]= r[Y1];
			((uint8_t*)dest)[3]= b[Y2];
			((uint8_t*)dest)[4]= g[Y2];
			((uint8_t*)dest)[5]= r[Y2];
			dest+=6;
		}
		break;
	case IMGFMT_RGB16:
	case IMGFMT_BGR16:
		{
			const int dr1= dither_2x2_8[y&1    ][0];
			const int dg1= dither_2x2_4[y&1    ][0];
			const int db1= dither_2x2_8[(y&1)^1][0];
			const int dr2= dither_2x2_8[y&1    ][1];
			const int dg2= dither_2x2_4[y&1    ][1];
			const int db2= dither_2x2_8[(y&1)^1][1];
			YSCALE_YUV_2_RGBX_C(uint16_t)
				((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
				((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
			}
		}
		break;
	case IMGFMT_RGB15:
	case IMGFMT_BGR15:
		{
			const int dr1= dither_2x2_8[y&1    ][0];
			const int dg1= dither_2x2_8[y&1    ][1];
			const int db1= dither_2x2_8[(y&1)^1][0];
			const int dr2= dither_2x2_8[y&1    ][1];
			const int dg2= dither_2x2_8[y&1    ][0];
			const int db2= dither_2x2_8[(y&1)^1][1];
			YSCALE_YUV_2_RGBX_C(uint16_t)
				((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];
				((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];
			}
		}
		break;
	case IMGFMT_RGB8:
	case IMGFMT_BGR8:
		{
			const uint8_t * const d64= dither_8x8_73[y&7];
			const uint8_t * const d32= dither_8x8_32[y&7];
			YSCALE_YUV_2_RGBX_C(uint8_t)
				((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];
				((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];
			}
		}
		break;
	case IMGFMT_RGB4:
	case IMGFMT_BGR4:
		{
			const uint8_t * const d64= dither_8x8_73 [y&7];
			const uint8_t * const d128=dither_8x8_220[y&7];
			YSCALE_YUV_2_RGBX_C(uint8_t)
				((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]
				                  +((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);
			}
		}
		break;
	case IMGFMT_RG4B:
	case IMGFMT_BG4B:
		{
			const uint8_t * const d64= dither_8x8_73 [y&7];
			const uint8_t * const d128=dither_8x8_220[y&7];
			YSCALE_YUV_2_RGBX_C(uint8_t)
				((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];
				((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];
			}
		}
		break;
	case IMGFMT_RGB1:
	case IMGFMT_BGR1:
		{
			const uint8_t * const d128=dither_8x8_220[y&7];
			uint8_t *g= c->table_gU[128] + c->table_gV[128];
			int acc=0;
			for(i=0; i<dstW-1; i+=2){
				int j;
				int Y1=1<<18;
				int Y2=1<<18;

				for(j=0; j<lumFilterSize; j++)
				{
					Y1 += lumSrc[j][i] * lumFilter[j];
					Y2 += lumSrc[j][i+1] * lumFilter[j];
				}
				Y1>>=19;
				Y2>>=19;
				if((Y1|Y2)&256)
				{
					if(Y1>255)   Y1=255;
					else if(Y1<0)Y1=0;
					if(Y2>255)   Y2=255;
					else if(Y2<0)Y2=0;
				}
				acc+= acc + g[Y1+d128[(i+0)&7]];
				acc+= acc + g[Y2+d128[(i+1)&7]];
				if((i&7)==6){
					((uint8_t*)dest)[0]= acc;
					dest++;
				}
			}
		}
		break;
	case IMGFMT_YUY2:
		YSCALE_YUV_2_PACKEDX_C(void)
			((uint8_t*)dest)[2*i2+0]= Y1;
			((uint8_t*)dest)[2*i2+1]= U;
			((uint8_t*)dest)[2*i2+2]= Y2;
			((uint8_t*)dest)[2*i2+3]= V;
		}
                break;
	case IMGFMT_UYVY:
		YSCALE_YUV_2_PACKEDX_C(void)
			((uint8_t*)dest)[2*i2+0]= U;
			((uint8_t*)dest)[2*i2+1]= Y1;
			((uint8_t*)dest)[2*i2+2]= V;
			((uint8_t*)dest)[2*i2+3]= Y2;
		}
                break;
	case IMGFMT_VYUY:
		YSCALE_YUV_2_PACKEDX_C(void)
			((uint8_t*)dest)[2*i2+0]= V;
			((uint8_t*)dest)[2*i2+1]= Y1;
			((uint8_t*)dest)[2*i2+2]= U;
			((uint8_t*)dest)[2*i2+3]= Y2;
		}
                break;
	case IMGFMT_YVYU:
		YSCALE_YUV_2_PACKEDX_C(void)
			((uint8_t*)dest)[2*i2+0]= Y1;
			((uint8_t*)dest)[2*i2+1]= V;
			((uint8_t*)dest)[2*i2+2]= Y2;
			((uint8_t*)dest)[2*i2+3]= U;
		}
                break;
	}
}


//Note: we have C, X86, MMX, MMX2, 3DNOW version therse no 3DNOW+MMX2 one
//Plain C versions
#if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)
#define COMPILE_C
#endif

#ifdef ARCH_POWERPC
#ifdef HAVE_ALTIVEC
#define COMPILE_ALTIVEC
#endif //HAVE_ALTIVEC
#endif //ARCH_POWERPC

#if defined(ARCH_X86) || defined(ARCH_X86_64)

#if (defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
#define COMPILE_MMX
#endif

#if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)
#define COMPILE_MMX2
#endif

#if (defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
#define COMPILE_3DNOW
#endif
#endif //ARCH_X86 || ARCH_X86_64

#undef HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW

#ifdef COMPILE_C
#undef HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#undef HAVE_ALTIVEC
#define RENAME(a) a ## _C
#include "swscale_template.c"
#endif

#ifdef ARCH_POWERPC
#ifdef COMPILE_ALTIVEC
#undef RENAME
#define HAVE_ALTIVEC
#define RENAME(a) a ## _altivec
#include "swscale_template.c"
#endif
#endif //ARCH_POWERPC

#if defined(ARCH_X86) || defined(ARCH_X86_64)

//X86 versions
/*
#undef RENAME
#undef HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#define ARCH_X86
#define RENAME(a) a ## _X86
#include "swscale_template.c"
*/
//MMX versions
#ifdef COMPILE_MMX
#undef RENAME
#define HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _MMX
#include "swscale_template.c"
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