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CMSampleBufferのCの関数使わなくてよくなったみたい

これまでCMSampleBufferからImageBufferを取り出す時などは

let imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)

という関数を使っていましたが、iOS13.0から

@available(OSX 10.15, iOS 13.0, tvOS 13.0, watchOS 6.0, *)
public var imageBuffer: CVImageBuffer? { get }

というプロパティが生えて、

sampleBuffer.imageBuffer

でアクセス出来るようになりました!
imageBufferの他、timingInfoやformatDescriptionも同様に取れるようになっていました。
便利ですね!

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