func: void FUNCC(ff_h264_idct_dc_add)(uint8_t *_dst, int16_t *block, int stride){
  
      int i, j;
  
      int dc = (((dctcoef*)block)[0] + 32) >> 6;
  
      pixel *dst = (pixel*)_dst;
  
      stride >>= sizeof(pixel)-1;
  
      for( j = 0; j < 4; j++ )
  
      {
  
          for( i = 0; i < 4; i++ )
  
              dst[i] = av_clip_pixel( dst[i] + dc );
  
          dst += stride;
  
      }
  
  }
  