resampling using ippsResamplePolyphaseFixed_16s

vittalprasad_B_ — Wed, 20 Apr 2016 13:45:09 GMT

i am new Intel ipp, when i go through old code some one in my company did i got doubts on resampling

bufsize = 200;
           history = 20;
           time1 = 20;
           lastread = 2*20;
           inRate = 8000;
           outRate = 16000;

       if(1)
       {
           ippsResamplePolyphaseFixedGetSize_16s(inRate,outRate,
                       2*(history-1),&size,&len,&height,ippAlgHintAccurate);
           state=(IppsResamlingPolyphaseFixed_16s*)ippsMalloc_8u(size);
           ippsResamplePolyphaseFixedInit_16s(inRate,outRate,
                           2*(history-1),0.95f,9.0f,state,ippAlgHintAccurate);
           inBuf=ippsMalloc_16s(bufsize+history+2);
           outBuf=ippsMalloc_16s((int)((bufsize-history)*outRate/(float)inRate+2));
           ippsZero_16s(inBuf,lastread);
           printf("\n bufsize %d history %d time %f lastread %d \n",
                   bufsize,history,time1, lastread);
       }

on what basis bufsize, history, time1 and lastread values are taken, where in document 8.1 document values are like this int bufsize=4096;
int history=128;
double time=history;
int lastread=history;

please help about this and little information about ippsResamplePolyphaseFixed_16s and ippsMove_16s(inBuf+(int)time-history,inBuf,lastread+history-(int)time) what actually ippsMove_16s doing from 8.1 document

Thanks

topic resampling using ippsResamplePolyphaseFixed_16s in Intel® Integrated Performance Primitives

resampling using ippsResamplePolyphaseFixed_16s