---
title: "init(options:threadCount:allocator:deallocator:)"
framework: accelerate
role: symbol
role_heading: Initializer
path: "accelerate/bnnsfilterparameters/init(options:threadcount:allocator:deallocator:)"
---

# init(options:threadCount:allocator:deallocator:)

Returns a new common filter parameters structure using the specified options.

## Declaration

```swift
init(options: BNNSFlags, threadCount: Int, allocator: BNNSAlloc?, deallocator: BNNSFree?)
```

## Parameters

- `options`: The options that control the behavior of a filter parameter.
- `threadCount`: The maximum number of threads that the filter executes. Set to 0 to specify that the filter automatically selects the number of threads. Set to 1 to specify that the filter operates on a single thread.
- `allocator`: The function the filter calls to allocate memory.
- `deallocator`: The function the filter calls to deallocate memory.

## See Also

### Initializers

- [init(flags:n_threads:alloc_memory:free_memory:)](accelerate/bnnsfilterparameters/init(flags:n_threads:alloc_memory:free_memory:).md)
- [init()](accelerate/bnnsfilterparameters/init().md)