postprocess.c

        int i;
        const int count= FFMAX(mbHeight * absQPStride, mbWidth);
        for(i=0; i<(count>>2); i++){
            ((uint32_t*)c->stdQPTable)[i] = (((const uint32_t*)QP_store)[i]>>1) & 0x7F7F7F7F;
        }
        for(i<<=2; i<count; i++){
            c->stdQPTable[i] = QP_store[i]>>1;
        }
        QP_store= c->stdQPTable;
        QPStride= absQPStride;
    }

    if(0){
        int x,y;
        for(y=0; y<mbHeight; y++){
            for(x=0; x<mbWidth; x++){
                av_log(c, AV_LOG_INFO, "%2d ", QP_store[x + y*QPStride]);
            }
            av_log(c, AV_LOG_INFO, "\n");
        }
        av_log(c, AV_LOG_INFO, "\n");
    }

    if((pict_type&7)!=3){
        if (QPStride >= 0){
            int i;
            const int count= FFMAX(mbHeight * QPStride, mbWidth);
            for(i=0; i<(count>>2); i++){
                ((uint32_t*)c->nonBQPTable)[i] = ((const uint32_t*)QP_store)[i] & 0x3F3F3F3F;
            }
            for(i<<=2; i<count; i++){
                c->nonBQPTable[i] = QP_store[i] & 0x3F;
            }
        } else {
            int i,j;
            for(i=0; i<mbHeight; i++) {
                for(j=0; j<absQPStride; j++) {
                    c->nonBQPTable[i*absQPStride+j] = QP_store[i*QPStride+j] & 0x3F;
                }
            }
        }
    }

    av_log(c, AV_LOG_DEBUG, "using npp filters 0x%X/0x%X\n",
           mode->lumMode, mode->chromMode);

    postProcess(src[0], srcStride[0], dst[0], dstStride[0],
                width, height, QP_store, QPStride, 0, mode, c);

    if (!(src[1] && src[2] && dst[1] && dst[2]))
        return;

    width  = (width )>>c->hChromaSubSample;
    height = (height)>>c->vChromaSubSample;

    if(mode->chromMode){
        postProcess(src[1], srcStride[1], dst[1], dstStride[1],
                    width, height, QP_store, QPStride, 1, mode, c);
        postProcess(src[2], srcStride[2], dst[2], dstStride[2],
                    width, height, QP_store, QPStride, 2, mode, c);
    }
    else if(srcStride[1] == dstStride[1] && srcStride[2] == dstStride[2]){
        linecpy(dst[1], src[1], height, srcStride[1]);
        linecpy(dst[2], src[2], height, srcStride[2]);
    }else{
        int y;
        for(y=0; y<height; y++){
            memcpy(&(dst[1][y*dstStride[1]]), &(src[1][y*srcStride[1]]), width);
            memcpy(&(dst[2][y*dstStride[2]]), &(src[2][y*srcStride[2]]), width);
        }
    }
}