static inline void RENAME(hyscale)(uint16_t *dst, int dstWidth, uint8_t *src, int srcW, int xInc) { #ifdef HAVE_MMX // use the new MMX scaler if th mmx2 cant be used (its faster than the x86asm one) if(sws_flags != SWS_FAST_BILINEAR || (!canMMX2BeUsed)) #else if(sws_flags != SWS_FAST_BILINEAR) #endif { RENAME(hScale)(dst, dstWidth, src, srcW, xInc, hLumFilter, hLumFilterPos, hLumFilterSize); } else // Fast Bilinear upscale / crap downscale { #ifdef ARCH_X86 #ifdef HAVE_MMX2 int i; if(canMMX2BeUsed) { asm volatile( "pxor %%mm7, %%mm7 \n\t" "pxor %%mm2, %%mm2 \n\t" // 2*xalpha "movd %5, %%mm6 \n\t" // xInc&0xFFFF "punpcklwd %%mm6, %%mm6 \n\t" "punpcklwd %%mm6, %%mm6 \n\t" "movq %%mm6, %%mm2 \n\t" "psllq $16, %%mm2 \n\t" "paddw %%mm6, %%mm2 \n\t" "psllq $16, %%mm2 \n\t" "paddw %%mm6, %%mm2 \n\t" "psllq $16, %%mm2 \n\t" //0,t,2t,3t t=xInc&0xFF "movq %%mm2, "MANGLE(temp0)" \n\t" "movd %4, %%mm6 \n\t" //(xInc*4)&0xFFFF "punpcklwd %%mm6, %%mm6 \n\t" "punpcklwd %%mm6, %%mm6 \n\t" "xorl %%eax, %%eax \n\t" // i "movl %0, %%esi \n\t" // src "movl %1, %%edi \n\t" // buf1 "movl %3, %%edx \n\t" // (xInc*4)>>16 "xorl %%ecx, %%ecx \n\t" "xorl %%ebx, %%ebx \n\t" "movw %4, %%bx \n\t" // (xInc*4)&0xFFFF #define FUNNY_Y_CODE \ PREFETCH" 1024(%%esi) \n\t"\ PREFETCH" 1056(%%esi) \n\t"\ PREFETCH" 1088(%%esi) \n\t"\ "call "MANGLE(funnyYCode)" \n\t"\ "movq "MANGLE(temp0)", %%mm2 \n\t"\ "xorl %%ecx, %%ecx \n\t" FUNNY_Y_CODE FUNNY_Y_CODE FUNNY_Y_CODE FUNNY_Y_CODE FUNNY_Y_CODE FUNNY_Y_CODE FUNNY_Y_CODE FUNNY_Y_CODE :: "m" (src), "m" (dst), "m" (dstWidth), "m" ((xInc*4)>>16), "m" ((xInc*4)&0xFFFF), "m" (xInc&0xFFFF) : "%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi" ); for(i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) dst[i] = src[srcW-1]*128; } else { #endif //NO MMX just normal asm ... asm volatile( "xorl %%eax, %%eax \n\t" // i "xorl %%ebx, %%ebx \n\t" // xx "xorl %%ecx, %%ecx \n\t" // 2*xalpha ".balign 16 \n\t" "1: \n\t" "movzbl (%0, %%ebx), %%edi \n\t" //src[xx] "movzbl 1(%0, %%ebx), %%esi \n\t" //src[xx+1] "subl %%edi, %%esi \n\t" //src[xx+1] - src[xx] "imull %%ecx, %%esi \n\t" //(src[xx+1] - src[xx])*2*xalpha "shll $16, %%edi \n\t" "addl %%edi, %%esi \n\t" //src[xx+1]*2*xalpha + src[xx]*(1-2*xalpha) "movl %1, %%edi \n\t" "shrl $9, %%esi \n\t" "movw %%si, (%%edi, %%eax, 2) \n\t" "addw %4, %%cx \n\t" //2*xalpha += xInc&0xFF "adcl %3, %%ebx \n\t" //xx+= xInc>>8 + carry "movzbl (%0, %%ebx), %%edi \n\t" //src[xx] "movzbl 1(%0, %%ebx), %%esi \n\t" //src[xx+1] "subl %%edi, %%esi \n\t" //src[xx+1] - src[xx] "imull %%ecx, %%esi \n\t" //(src[xx+1] - src[xx])*2*xalpha "shll $16, %%edi \n\t" "addl %%edi, %%esi \n\t" //src[xx+1]*2*xalpha + src[xx]*(1-2*xalpha) "movl %1, %%edi \n\t" "shrl $9, %%esi \n\t" "movw %%si, 2(%%edi, %%eax, 2) \n\t" "addw %4, %%cx \n\t" //2*xalpha += xInc&0xFF "adcl %3, %%ebx \n\t" //xx+= xInc>>8 + carry "addl $2, %%eax \n\t" "cmpl %2, %%eax \n\t" " jb 1b \n\t" :: "r" (src), "m" (dst), "m" (dstWidth), "m" (xInc>>16), "m" (xInc&0xFFFF) : "%eax", "%ebx", "%ecx", "%edi", "%esi" ); #ifdef HAVE_MMX2 } //if MMX2 cant be used #endif #else int i; unsigned int xpos=0; for(i=0;i<dstWidth;i++) { register unsigned int xx=xpos>>16; register unsigned int xalpha=(xpos&0xFFFF)>>9; dst[i]= (src[xx]<<7) + (src[xx+1] - src[xx])*xalpha; xpos+=xInc; } #endif } }