static void RENAME(swScale)(SwsContext *c, uint8_t* srcParam[], int srcStrideParam[], int srcSliceY, int srcSliceH, uint8_t* dstParam[], int dstStride[]){ /* load a few things into local vars to make the code more readable? and faster */ const int srcW= c->srcW; const int dstW= c->dstW; const int dstH= c->dstH; const int chrDstW= c->chrDstW; const int lumXInc= c->lumXInc; const int chrXInc= c->chrXInc; const int dstFormat= c->dstFormat; const int flags= c->flags; const int canMMX2BeUsed= c->canMMX2BeUsed; int16_t *vLumFilterPos= c->vLumFilterPos; int16_t *vChrFilterPos= c->vChrFilterPos; int16_t *hLumFilterPos= c->hLumFilterPos; int16_t *hChrFilterPos= c->hChrFilterPos; int16_t *vLumFilter= c->vLumFilter; int16_t *vChrFilter= c->vChrFilter; int16_t *hLumFilter= c->hLumFilter; int16_t *hChrFilter= c->hChrFilter; int16_t *lumMmxFilter= c->lumMmxFilter; int16_t *chrMmxFilter= c->chrMmxFilter; const int vLumFilterSize= c->vLumFilterSize; const int vChrFilterSize= c->vChrFilterSize; const int hLumFilterSize= c->hLumFilterSize; const int hChrFilterSize= c->hChrFilterSize; int16_t **lumPixBuf= c->lumPixBuf; int16_t **chrPixBuf= c->chrPixBuf; const int vLumBufSize= c->vLumBufSize; const int vChrBufSize= c->vChrBufSize; uint8_t *funnyYCode= c->funnyYCode; uint8_t *funnyUVCode= c->funnyUVCode; uint8_t *formatConvBuffer= c->formatConvBuffer; /* vars whch will change and which we need to storw back in the context */ int dstY= c->dstY; int lumBufIndex= c->lumBufIndex; int chrBufIndex= c->chrBufIndex; int lastInLumBuf= c->lastInLumBuf; int lastInChrBuf= c->lastInChrBuf; int srcStride[3]; uint8_t *src[3]; uint8_t *dst[3]; if((c->srcFormat == IMGFMT_IYUV) || (c->srcFormat == IMGFMT_I420)){ src[0]= srcParam[0]; src[1]= srcParam[2]; src[2]= srcParam[1]; srcStride[0]= srcStrideParam[0]; srcStride[1]= srcStrideParam[2]; srcStride[2]= srcStrideParam[1]; } else if(c->srcFormat==IMGFMT_YV12){ src[0]= srcParam[0]; src[1]= srcParam[1]; src[2]= srcParam[2]; srcStride[0]= srcStrideParam[0]; srcStride[1]= srcStrideParam[1]; srcStride[2]= srcStrideParam[2]; } else if(isPacked(c->srcFormat)){ src[0]= src[1]= src[2]= srcParam[0]; srcStride[0]= srcStrideParam[0]; srcStride[1]= srcStride[2]= srcStrideParam[0]<<1; } else if(c->srcFormat==IMGFMT_Y8){ src[0]= srcParam[0]; src[1]= src[2]= NULL; srcStride[0]= srcStrideParam[0]; srcStride[1]= srcStride[2]= 0; } if((c->dstFormat == IMGFMT_IYUV) || (c->dstFormat == IMGFMT_I420)){ dst[0]= dstParam[0]; dst[1]= dstParam[2]; dst[2]= dstParam[1]; }else{ dst[0]= dstParam[0]; dst[1]= dstParam[1]; dst[2]= dstParam[2]; } if(dstStride[0]%8 !=0 || dstStride[1]%8 !=0 || dstStride[2]%8 !=0) { static int firstTime=1; //FIXME move this into the context perhaps if(flags & SWS_PRINT_INFO && firstTime) { fprintf(stderr, "SwScaler: Warning: dstStride is not aligned!\n" "SwScaler: ->cannot do aligned memory acesses anymore\n"); firstTime=0; } } /* Note the user might start scaling the picture in the middle so this will not get executed this is not really intended but works currently, so ppl might do it */ if(srcSliceY ==0){ lumBufIndex=0; chrBufIndex=0; dstY=0; lastInLumBuf= -1; lastInChrBuf= -1; } for(;dstY < dstH; dstY++){ unsigned char *dest =dst[0]+dstStride[0]*dstY; unsigned char *uDest=dst[1]+dstStride[1]*(dstY>>1); unsigned char *vDest=dst[2]+dstStride[2]*(dstY>>1); const int chrDstY= isHalfChrV(dstFormat) ? (dstY>>1) : dstY; const int firstLumSrcY= vLumFilterPos[dstY]; //First line needed as input const int firstChrSrcY= vChrFilterPos[chrDstY]; //First line needed as input const int lastLumSrcY= firstLumSrcY + vLumFilterSize -1; // Last line needed as input const int lastChrSrcY= firstChrSrcY + vChrFilterSize -1; // Last line needed as input //handle holes (FAST_BILINEAR & weird filters) if(firstLumSrcY > lastInLumBuf) lastInLumBuf= firstLumSrcY-1; if(firstChrSrcY > lastInChrBuf) lastInChrBuf= firstChrSrcY-1; //printf("%d %d %d\n", firstChrSrcY, lastInChrBuf, vChrBufSize); ASSERT(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1) ASSERT(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1) // Do we have enough lines in this slice to output the dstY line if(lastLumSrcY < srcSliceY + srcSliceH && lastChrSrcY < ((srcSliceY + srcSliceH)>>1)) { //Do horizontal scaling while(lastInLumBuf < lastLumSrcY) { uint8_t *s= src[0]+(lastInLumBuf + 1 - srcSliceY)*srcStride[0]; lumBufIndex++; // printf("%d %d %d %d\n", lumBufIndex, vLumBufSize, lastInLumBuf, lastLumSrcY); ASSERT(lumBufIndex < 2*vLumBufSize) ASSERT(lastInLumBuf + 1 - srcSliceY < srcSliceH) ASSERT(lastInLumBuf + 1 - srcSliceY >= 0) // printf("%d %d\n", lumBufIndex, vLumBufSize); RENAME(hyscale)(lumPixBuf[ lumBufIndex ], dstW, s, srcW, lumXInc, flags, canMMX2BeUsed, hLumFilter, hLumFilterPos, hLumFilterSize, funnyYCode, c->srcFormat, formatConvBuffer); lastInLumBuf++; } while(lastInChrBuf < lastChrSrcY) { uint8_t *src1= src[1]+(lastInChrBuf + 1 - (srcSliceY>>1))*srcStride[1]; uint8_t *src2= src[2]+(lastInChrBuf + 1 - (srcSliceY>>1))*srcStride[2]; chrBufIndex++; ASSERT(chrBufIndex < 2*vChrBufSize) ASSERT(lastInChrBuf + 1 - (srcSliceY>>1) < (srcSliceH>>1)) ASSERT(lastInChrBuf + 1 - (srcSliceY>>1) >= 0) //FIXME replace parameters through context struct (some at least) RENAME(hcscale)(chrPixBuf[ chrBufIndex ], chrDstW, src1, src2, (srcW+1)>>1, chrXInc, flags, canMMX2BeUsed, hChrFilter, hChrFilterPos, hChrFilterSize, funnyUVCode, c->srcFormat, formatConvBuffer); lastInChrBuf++; } //wrap buf index around to stay inside the ring buffer if(lumBufIndex >= vLumBufSize ) lumBufIndex-= vLumBufSize; if(chrBufIndex >= vChrBufSize ) chrBufIndex-= vChrBufSize; } else // not enough lines left in this slice -> load the rest in the buffer { /* printf("%d %d Last:%d %d LastInBuf:%d %d Index:%d %d Y:%d FSize: %d %d BSize: %d %d\n", firstChrSrcY,firstLumSrcY,lastChrSrcY,lastLumSrcY, lastInChrBuf,lastInLumBuf,chrBufIndex,lumBufIndex,dstY,vChrFilterSize,vLumFilterSize, vChrBufSize, vLumBufSize); */ //Do horizontal scaling while(lastInLumBuf+1 < srcSliceY + srcSliceH) { uint8_t *s= src[0]+(lastInLumBuf + 1 - srcSliceY)*srcStride[0]; lumBufIndex++; ASSERT(lumBufIndex < 2*vLumBufSize) ASSERT(lastInLumBuf + 1 - srcSliceY < srcSliceH) ASSERT(lastInLumBuf + 1 - srcSliceY >= 0) RENAME(hyscale)(lumPixBuf[ lumBufIndex ], dstW, s, srcW, lumXInc, flags, canMMX2BeUsed, hLumFilter, hLumFilterPos, hLumFilterSize, funnyYCode, c->srcFormat, formatConvBuffer); lastInLumBuf++; } while(lastInChrBuf+1 < ((srcSliceY + srcSliceH)>>1)) { uint8_t *src1= src[1]+(lastInChrBuf + 1 - (srcSliceY>>1))*srcStride[1]; uint8_t *src2= src[2]+(lastInChrBuf + 1 - (srcSliceY>>1))*srcStride[2]; chrBufIndex++; ASSERT(chrBufIndex < 2*vChrBufSize) ASSERT(lastInChrBuf + 1 - (srcSliceY>>1) < (srcSliceH>>1)) ASSERT(lastInChrBuf + 1 - (srcSliceY>>1) >= 0) RENAME(hcscale)(chrPixBuf[ chrBufIndex ], chrDstW, src1, src2, (srcW+1)>>1, chrXInc, flags, canMMX2BeUsed, hChrFilter, hChrFilterPos, hChrFilterSize, funnyUVCode, c->srcFormat, formatConvBuffer); lastInChrBuf++; } //wrap buf index around to stay inside the ring buffer if(lumBufIndex >= vLumBufSize ) lumBufIndex-= vLumBufSize; if(chrBufIndex >= vChrBufSize ) chrBufIndex-= vChrBufSize; break; //we cant output a dstY line so lets try with the next slice } #ifdef HAVE_MMX b5Dither= dither8[dstY&1]; g6Dither= dither4[dstY&1]; g5Dither= dither8[dstY&1]; r5Dither= dither8[(dstY+1)&1]; #endif if(dstY < dstH-2) { if(isPlanarYUV(dstFormat)) //YV12 like { if(dstY&1) uDest=vDest= NULL; //FIXME split functions in lumi / chromi if(vLumFilterSize == 1 && vChrFilterSize == 1) // Unscaled YV12 { int16_t *lumBuf = lumPixBuf[0]; int16_t *chrBuf= chrPixBuf[0]; RENAME(yuv2yuv1)(lumBuf, chrBuf, dest, uDest, vDest, dstW); } else //General YV12 { int16_t **lumSrcPtr= lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize; int16_t **chrSrcPtr= chrPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize; RENAME(yuv2yuvX)( vLumFilter+dstY*vLumFilterSize , lumSrcPtr, vLumFilterSize, vChrFilter+(dstY>>1)*vChrFilterSize, chrSrcPtr, vChrFilterSize, dest, uDest, vDest, dstW, lumMmxFilter+dstY*vLumFilterSize*4, chrMmxFilter+(dstY>>1)*vChrFilterSize*4); } } else { int16_t **lumSrcPtr= lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize; int16_t **chrSrcPtr= chrPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize; ASSERT(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2); ASSERT(chrSrcPtr + vChrFilterSize - 1 < chrPixBuf + vChrBufSize*2); if(vLumFilterSize == 1 && vChrFilterSize == 2) //Unscaled RGB { int chrAlpha= vChrFilter[2*dstY+1]; RENAME(yuv2rgb1)(*lumSrcPtr, *chrSrcPtr, *(chrSrcPtr+1), dest, dstW, chrAlpha, dstFormat, flags); } else if(vLumFilterSize == 2 && vChrFilterSize == 2) //BiLinear Upscale RGB { int lumAlpha= vLumFilter[2*dstY+1]; int chrAlpha= vChrFilter[2*dstY+1]; RENAME(yuv2rgb2)(*lumSrcPtr, *(lumSrcPtr+1), *chrSrcPtr, *(chrSrcPtr+1), dest, dstW, lumAlpha, chrAlpha, dstFormat, flags); } else //General RGB { RENAME(yuv2rgbX)( vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize, vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize, dest, dstW, dstFormat, lumMmxFilter+dstY*vLumFilterSize*4, chrMmxFilter+dstY*vChrFilterSize*4); } } } else // hmm looks like we cant use MMX here without overwriting this arrays tail { int16_t **lumSrcPtr= lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize; int16_t **chrSrcPtr= chrPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize; if(isPlanarYUV(dstFormat)) //YV12 { if(dstY&1) uDest=vDest= NULL; //FIXME split functions in lumi / chromi yuv2yuvXinC( vLumFilter+dstY*vLumFilterSize , lumSrcPtr, vLumFilterSize, vChrFilter+(dstY>>1)*vChrFilterSize, chrSrcPtr, vChrFilterSize, dest, uDest, vDest, dstW); } else { ASSERT(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2); ASSERT(chrSrcPtr + vChrFilterSize - 1 < chrPixBuf + vChrBufSize*2); yuv2rgbXinC( vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize, vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize, dest, dstW, dstFormat); } } } #ifdef HAVE_MMX __asm __volatile(SFENCE:::"memory"); __asm __volatile(EMMS:::"memory"); #endif /* store changed local vars back in the context */ c->dstY= dstY; c->lumBufIndex= lumBufIndex; c->chrBufIndex= chrBufIndex; c->lastInLumBuf= lastInLumBuf; c->lastInChrBuf= lastInChrBuf; }