static inline void RENAME(planar2x)(const uint8_t *src, uint8_t *dst, long srcWidth, long srcHeight, long srcStride, long dstStride) { long x,y; dst[0]= src[0]; // first line for(x=0; x<srcWidth-1; x++){ dst[2*x+1]= (3*src[x] + src[x+1])>>2; dst[2*x+2]= ( src[x] + 3*src[x+1])>>2; } dst[2*srcWidth-1]= src[srcWidth-1]; dst+= dstStride; for(y=1; y<srcHeight; y++){ #if defined (HAVE_MMX2) || defined (HAVE_3DNOW) const long mmxSize= srcWidth&~15; asm volatile( "mov %4, %%"REG_a" \n\t" "1: \n\t" "movq (%0, %%"REG_a"), %%mm0 \n\t" "movq (%1, %%"REG_a"), %%mm1 \n\t" "movq 1(%0, %%"REG_a"), %%mm2 \n\t" "movq 1(%1, %%"REG_a"), %%mm3 \n\t" "movq -1(%0, %%"REG_a"), %%mm4 \n\t" "movq -1(%1, %%"REG_a"), %%mm5 \n\t" PAVGB" %%mm0, %%mm5 \n\t" PAVGB" %%mm0, %%mm3 \n\t" PAVGB" %%mm0, %%mm5 \n\t" PAVGB" %%mm0, %%mm3 \n\t" PAVGB" %%mm1, %%mm4 \n\t" PAVGB" %%mm1, %%mm2 \n\t" PAVGB" %%mm1, %%mm4 \n\t" PAVGB" %%mm1, %%mm2 \n\t" "movq %%mm5, %%mm7 \n\t" "movq %%mm4, %%mm6 \n\t" "punpcklbw %%mm3, %%mm5 \n\t" "punpckhbw %%mm3, %%mm7 \n\t" "punpcklbw %%mm2, %%mm4 \n\t" "punpckhbw %%mm2, %%mm6 \n\t" #if 1 MOVNTQ" %%mm5, (%2, %%"REG_a", 2)\n\t" MOVNTQ" %%mm7, 8(%2, %%"REG_a", 2)\n\t" MOVNTQ" %%mm4, (%3, %%"REG_a", 2)\n\t" MOVNTQ" %%mm6, 8(%3, %%"REG_a", 2)\n\t" #else "movq %%mm5, (%2, %%"REG_a", 2) \n\t" "movq %%mm7, 8(%2, %%"REG_a", 2)\n\t" "movq %%mm4, (%3, %%"REG_a", 2) \n\t" "movq %%mm6, 8(%3, %%"REG_a", 2)\n\t" #endif "add $8, %%"REG_a" \n\t" " js 1b \n\t" :: "r" (src + mmxSize ), "r" (src + srcStride + mmxSize ), "r" (dst + mmxSize*2), "r" (dst + dstStride + mmxSize*2), "g" (-mmxSize) : "%"REG_a ); #else const long mmxSize=1; #endif dst[0 ]= (3*src[0] + src[srcStride])>>2; dst[dstStride]= ( src[0] + 3*src[srcStride])>>2; for(x=mmxSize-1; x<srcWidth-1; x++){ dst[2*x +1]= (3*src[x+0] + src[x+srcStride+1])>>2; dst[2*x+dstStride+2]= ( src[x+0] + 3*src[x+srcStride+1])>>2; dst[2*x+dstStride+1]= ( src[x+1] + 3*src[x+srcStride ])>>2; dst[2*x +2]= (3*src[x+1] + src[x+srcStride ])>>2; } dst[srcWidth*2 -1 ]= (3*src[srcWidth-1] + src[srcWidth-1 + srcStride])>>2; dst[srcWidth*2 -1 + dstStride]= ( src[srcWidth-1] + 3*src[srcWidth-1 + srcStride])>>2; dst+=dstStride*2; src+=srcStride; } // last line #if 1 dst[0]= src[0]; for(x=0; x<srcWidth-1; x++){ dst[2*x+1]= (3*src[x] + src[x+1])>>2; dst[2*x+2]= ( src[x] + 3*src[x+1])>>2; } dst[2*srcWidth-1]= src[srcWidth-1]; #else for(x=0; x<srcWidth; x++){ dst[2*x+0]= dst[2*x+1]= src[x]; } #endif #ifdef HAVE_MMX asm volatile( EMMS" \n\t" SFENCE" \n\t" :::"memory"); #endif }