CODEWITHSUNDEEP
swiftxcodecore-audiolldb
Moises Lozada
Moises Lozada

Reputation: 29

AudioStreamBasicDescription not being filled, llbd shows it nil, variable inspector doesnt

I have this snippet of code

        var dataFormat: AudioStreamBasicDescription?
        var propSize: UInt32 = UInt32(MemoryLayout<AudioStreamBasicDescription>.size)
        try SCoreAudioError.check(status: AudioFileGetProperty(audioFileID!, kAudioFilePropertyDataFormat, &propSize, &dataFormat), "Couldn't get file's data format")

The variable is somekind being filled, but the llbd debugger shows my variable dataFormat value as nil (by printing it with po dataFormat), while the Variable inspector says that such variable is not nil (it is equal to some with a content)

Upvotes: 0

Views: 70

Answers (1)

Moises Lozada
Moises Lozada

Reputation: 29

I found a solution

I had to initialize the AudioStreamBasicDescription, before passing it as a reference

var dataFormat = AudioStreamBasicDescription.init()

I had gotten confused because it looks like the pattern of passing an empty optional by reference to then be filled is common with opaque types (I think)..

Upvotes: 1

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