My code gets some data from an OpenCV cv::Mat object, and passes it to some
Swift code that takes it via an UnsafePointer<UInt8> parameter. This works fine
until I want to make the call asynchronous (using a DispatchQueue), I think
because the underlying cv::Mat gets deallocated by the caller before the async
method completes.
So I want to make a copy of it to hold onto during the async operation. I tried
this:
let copy = UnsafeMutablePointer<UInt8>.allocate(capacity:
inSourceBufferLength)
copy.initialize(from: inSourceBuffer, count: inSourceBufferLength)
self.queue.async
{
self.foo(data: copy, length: inSourceBufferLength)
}
But that doesn't seem to be working. Is UnsafeMutablePointer<> not memory
managed?
I'd also like to keep immutable semantics throughout, but I can forego that if
it makes things really messy.
--
Rick Mann
rm...@latencyzero.com
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