[swift-users] How to get UnsafePointer or UnsafeMutablePointer from ContiguousArray?

[Dmitri Gribenko]

On Thu, Feb 11, 2016 at 12:13 AM, Sergey Kuratov <ksubox.swift at gmail.com> wrote:
>>> Can I define similar for my Swift classes ?
>
>>No.  What would be your use case?
>
> I also could have my Swift object with several members, but when send to
> native part would like to send address exactly one of members.
> Something like this:
>
> // Swift part
>
> class ABlock {
>
> var channels = 2
>
> var samplerate = 44100
>
> var  buffer : UnsafeMutablePointer<Int16>
>
> init() {
>
> buffer = UnsafeMutablePointer<Int16>.alloc(2048)
>
> }
>
> deinit {
>
> buffer.dealloc(2048)
>
> }
>
> }
>
>
> var block = ABlock
> generate(block) <- here I would like to send address of ABlock.buffer to
> native part
>
> // C part
> void generate(int16_t *buf) {
> ...
> }

I'd recommend to write a Swift wrapper for your C code that accepts
the class instance, and calls the generate() function with appropriate
arguments.

Dmitri

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