HEIC encoding of CIImage failing with iOS14

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Created Oct ’20

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I have following simple code that is failing on iOS14 (was working fine with iOS13).

The code converts a CIImage object to heif representation.

Code Block func encodeImageToHeif(_ image: CIImage ) -> Data? {
    return autoreleasepool(invoking: { () -> Data? in
        let color = CGColorSpace(name: CGColorSpace.sRGB)
        let context = CIContext()
        return context.heifRepresentation(of: image,
			format: CIFormat.RGBA8,
			colorSpace: color!,
			options: [kCGImageDestinationLossyCompressionQuality 
			as CIImageRepresentationOption : 0.2] )
    })
}

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Answer 1

FrankSchlegel OP

Oct ’20

I encountered a very similar bug and I found a workaround. Can you try context.heifRepresentation(of: image.settingAlphaOne(in: image.extent), …) and see if that works?

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