func: void ff_h264_idct8_add_c(uint8_t *dst, DCTELEM *block, int stride){
  
      int i;
  
      uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
  
  
  
      block[0] += 32;
  
  
  
      for( i = 0; i < 8; i++ )
  
      {
  
          const int a0 =  block[0+i*8] + block[4+i*8];
  
          const int a2 =  block[0+i*8] - block[4+i*8];
  
          const int a4 = (block[2+i*8]>>1) - block[6+i*8];
  
          const int a6 = (block[6+i*8]>>1) + block[2+i*8];
  
  
  
          const int b0 = a0 + a6;
  
          const int b2 = a2 + a4;
  
          const int b4 = a2 - a4;
  
          const int b6 = a0 - a6;
  
  
  
          const int a1 = -block[3+i*8] + block[5+i*8] - block[7+i*8] - (block[7+i*8]>>1);
  
          const int a3 =  block[1+i*8] + block[7+i*8] - block[3+i*8] - (block[3+i*8]>>1);
  
          const int a5 = -block[1+i*8] + block[7+i*8] + block[5+i*8] + (block[5+i*8]>>1);
  
          const int a7 =  block[3+i*8] + block[5+i*8] + block[1+i*8] + (block[1+i*8]>>1);
  
  
  
          const int b1 = (a7>>2) + a1;
  
          const int b3 =  a3 + (a5>>2);
  
          const int b5 = (a3>>2) - a5;
  
          const int b7 =  a7 - (a1>>2);
  
  
  
          block[0+i*8] = b0 + b7;
  
          block[7+i*8] = b0 - b7;
  
          block[1+i*8] = b2 + b5;
  
          block[6+i*8] = b2 - b5;
  
          block[2+i*8] = b4 + b3;
  
          block[5+i*8] = b4 - b3;
  
          block[3+i*8] = b6 + b1;
  
          block[4+i*8] = b6 - b1;
  
      }
  
      for( i = 0; i < 8; i++ )
  
      {
  
          const int a0 =  block[i+0*8] + block[i+4*8];
  
          const int a2 =  block[i+0*8] - block[i+4*8];
  
          const int a4 = (block[i+2*8]>>1) - block[i+6*8];
  
          const int a6 = (block[i+6*8]>>1) + block[i+2*8];
  
  
  
          const int b0 = a0 + a6;
  
          const int b2 = a2 + a4;
  
          const int b4 = a2 - a4;
  
          const int b6 = a0 - a6;
  
  
  
          const int a1 = -block[i+3*8] + block[i+5*8] - block[i+7*8] - (block[i+7*8]>>1);
  
          const int a3 =  block[i+1*8] + block[i+7*8] - block[i+3*8] - (block[i+3*8]>>1);
  
          const int a5 = -block[i+1*8] + block[i+7*8] + block[i+5*8] + (block[i+5*8]>>1);
  
          const int a7 =  block[i+3*8] + block[i+5*8] + block[i+1*8] + (block[i+1*8]>>1);
  
  
  
          const int b1 = (a7>>2) + a1;
  
          const int b3 =  a3 + (a5>>2);
  
          const int b5 = (a3>>2) - a5;
  
          const int b7 =  a7 - (a1>>2);
  
  
  
          dst[i + 0*stride] = cm[ dst[i + 0*stride] + ((b0 + b7) >> 6) ];
  
          dst[i + 1*stride] = cm[ dst[i + 1*stride] + ((b2 + b5) >> 6) ];
  
          dst[i + 2*stride] = cm[ dst[i + 2*stride] + ((b4 + b3) >> 6) ];
  
          dst[i + 3*stride] = cm[ dst[i + 3*stride] + ((b6 + b1) >> 6) ];
  
          dst[i + 4*stride] = cm[ dst[i + 4*stride] + ((b6 - b1) >> 6) ];
  
          dst[i + 5*stride] = cm[ dst[i + 5*stride] + ((b4 - b3) >> 6) ];
  
          dst[i + 6*stride] = cm[ dst[i + 6*stride] + ((b2 - b5) >> 6) ];
  
          dst[i + 7*stride] = cm[ dst[i + 7*stride] + ((b0 - b7) >> 6) ];
  
      }
  
  }
  