@monoqlo QRίʔυಡΈऔΓʁ ָউͰ͢Α AVFoundationΛ৴ͨ͡ ͓Ε͕όΧͩͬͨ

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ḪΔ͜ͱ ಥવͰ͕͢

໿ 1೥൒

2017 ೥ 3 ݄ ๭೔

ָউͰ͢Α✌✌ QRίʔυಡΈऔΔ ΞϓϦͭ͘ΕΔʁ

͜ͷ࣌ߟ͍͑ͯͨ͜ͱ

AVFoundation Ͱ༨༟Ͱ͠ΐ • AVCaptureSession • AVCaptureMetadataOutput • AVMetadataMachineReadableCodeObject • etc…

QRίʔυ ౉͞Εͨ

https://www.55truck.com/shaken.html

https://www.55truck.com/shaken.html

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"8/-/1/-/- /- /999999/02” "2/- //160114/1001/BKG-NKR85” "AN/0168/- /- /0381/13/09” "2/඼઒ɹɹ̔̌̌ͤ̒̐̎” “̒/1/NKR85-7011300/4JJ1/1"

http://mangalifewin.takeshobo.co.jp/rensai/popute3/

"8/-/1/-/- /- /999999/02” "2/- //160114/1001/BKG-NKR85” "AN/0168/- /- /0381/13/09” "2/඼઒ɹɹ̔̌̌ͤ̒̐̎” “̒/1/NKR85-7011300/4JJ1/1"

"2/- //160114/1001/BKG-NKR85AN/0168/- /- /0381/13/098/-/1/-/- /- /999999/02” "2/඼઒ɹɹ̔̌̌ͤ̒̐̎̒/1/NKR85-7011300/4JJ1/1”

φχϞϊ ͜Ε͸…

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http://www.qrcode.com

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΋ͬͱ QRίʔυ Λ஌Ζ͏

৘ใٕज़ʵࣗಈೝࣝٴͼσʔλऔಘٕज़ʵ ̧̦ίʔυόʔίʔυγϯϘϧମܥ࢓༷ JIS ن֨ X0510

http://www.jisc.go.jp/

શ 115 ϖʔδ…

QRίʔυͷ࢓૊Έ ௒μΠδΣετ൛

ࠇനϞδϡʔϧͷೝࣝ START ܕࣜ৘ใͷ෮߸ ܕ൪ͷܾఆ ϚεΫॲཧͷղআ σʔλ & ޡΓగਖ਼ίʔυޠͷ෮ݩ

ޡΓగਖ਼ ޡΓݕग़ σʔλΛ෮߸ σʔλೖख END ޡΓφγ ޡΓΞϦ

“Ϟʔυ” ղऍ ෮߸͢ΔͨΊʹॏཁͳͷ͕

“Ϟʔυ” ͱ͸

• ECI • ߏ଄త࿈઀ • FNC1 • (ऴ୺ύλʔϯ) • ਺ࣈ • ӳ਺ࣈ • 8ϏοτόΠτ • ׽ࣈ Ϟʔυ = σʔλΛ֨ೲ͢Δܗࣜ • ѹॖޮ཰޲্Λ໨తͱ͠ɺଟ਺ͷϞʔυ͕ఆٛ͞Ε͍ͯΔ • QRίʔυੜ੒࣌ɺσʔλʹ߹Θͤͯ࠷దͳ΋ͷΛબ୒͢Δ • ϔομʔͱͯ͠จࣈ਺ࢦࣔࢠͱͱ΋ʹσʔλʹ෇Ճ͢Δ • ૊Έ߹Θͤͯ࢖༻Մʢex. ӳ਺ࣈ + ׽ࣈʣ ߏ଄త࿈઀

• ਺ࣈ • ӳ਺ࣈ • 8ϏοτόΠτ • ׽ࣈ • ECI • ߏ଄త࿈઀ • FNC1 • (ऴ୺ύλʔϯ) Ϟʔυ = σʔλΛ֨ೲ͢Δܗࣜ • ѹॖޮ཰޲্Λ໨తͱ͠ɺଟ਺ͷϞʔυ͕ఆٛ͞Ε͍ͯΔ • QRίʔυੜ੒࣌ɺσʔλʹ߹Θͤͯ࠷దͳ΋ͷΛબ୒͢Δ • ϔομʔͱͯ͠จࣈ਺ࢦࣔࢠͱͱ΋ʹσʔλʹ෇Ճ͢Δ • ૊Έ߹Θͤͯ࢖༻Մʢex. ӳ਺ࣈ + ׽ࣈʣ ߏ଄త࿈઀

ߏ଄త࿈઀ Ϟʔυ

ϔομʔ࢓༷ 1. Ϟʔυࢦࣔࢠʢ0011ʣɿ4bit 2. γϯϘϧྻࢦࣔࢠɿ8bit 1. γϯϘϧҐஔɿ4bit 2. ࿈݁͞ΕΔγϯϘϧͷ߹ܭ਺ɿ4bit 3. ύϦςΟɿ8bit ෼ׂલͷσʔλΛόΠτ͝ͱʹXORԋࢉͨ͠஋

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ϓϩύςΟ var corners: [CGPoint] A Swift array of corner points. var stringValue: String? Returns the error corrected data decoded into a human- readable string.

ͦΜͳ΋ͷͳ͍ AVMetadataMachineReadableCodeObject ʹ

ࠇനϞδϡʔϧͷೝࣝ START ܕࣜ৘ใͷ෮߸ ܕ൪ͷܾఆ ϚεΫॲཧͷղআ σʔλ & ޡΓగਖ਼ίʔυޠͷ෮ݩ

ޡΓగਖ਼ ޡΓݕग़ σʔλΛ෮߸ σʔλೖख END ޡΓφγ ޡΓΞϦ AVMetadataMachine ReadableCodeObject ͷ stringValue ͸ ෳ߹ޙͷίϨ

ϥΠϒϥϦΛ୳͢ ߏ଄త࿈઀Λ͏·͘ѻ͑Δ

None Swift ੡ͷϥΠϒϥϦ

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ZXingObjC ٹੈओ TheLevelUp/ZXingObjC: An Objective-C Port of ZXing

γϯϘϧҐஔ/߹ܭ਺ͱύϦςΟ͕औΕΔ @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity guard let metaData = result.resultMetadata, let sequenceValue = metaData[Int(kResultMetadataTypeStructuredAppendSequence.rawValue)] as? Int, let parity = metaData[Int(kResultMetadataTypeStructuredAppendParity.rawValue)] as? Int else { return } // sequence: ಡΈऔͬͨQRίʔυͷ൪߸ 4bit + τʔλϧͷQRίʔυ਺ 4bit let bit = String(sequenceValue, radix: 2) let pad = String(repeating: "0", count: (8 - bit.count)) let sequence = pad + bit let current = Int(sequence.prefix(4), radix: 2)! let total = Int(sequence.suffix(from: 4), radix: 2)! … } @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity

γϯϘϧҐஔ/߹ܭ਺ͱύϦςΟ͕औΕΔ @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity guard let metaData = result.resultMetadata, let sequenceValue = metaData[Int(kResultMetadataTypeStructuredAppendSequence.rawValue)] as? Int, let parity = metaData[Int(kResultMetadataTypeStructuredAppendParity.rawValue)] as? Int else { return } // sequence: ಡΈऔͬͨQRίʔυͷ൪߸ 4bit + τʔλϧͷQRίʔυ਺ 4bit let bit = String(sequenceValue, radix: 2) let pad = String(repeating: "0", count: (8 - bit.count)) let sequence = pad + bit let current = Int(sequence.prefix(4), radix: 2)! let total = Int(sequence.suffix(from: 4), radix: 2)! … } @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity guard let metaData = result.resultMetadata, let sequenceValue = metaData[Int(kResultMetadataTypeStructuredAppendSequence.rawValue)] as? Int, let parity = metaData[Int(kResultMetadataTypeStructuredAppendParity.rawValue)] as? Int else { return }

γϯϘϧҐஔ/߹ܭ਺ͱύϦςΟ͕औΕΔ @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity guard let metaData = result.resultMetadata, let sequenceValue = metaData[Int(kResultMetadataTypeStructuredAppendSequence.rawValue)] as? Int, let parity = metaData[Int(kResultMetadataTypeStructuredAppendParity.rawValue)] as? Int else { return } // sequence: ಡΈऔͬͨQRίʔυͷ൪߸ 4bit + τʔλϧͷQRίʔυ਺ 4bit let bit = String(sequenceValue, radix: 2) let pad = String(repeating: "0", count: (8 - bit.count)) let sequence = pad + bit let current = Int(sequence.prefix(4), radix: 2)! let total = Int(sequence.suffix(from: 4), radix: 2)! … } @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity guard let metaData = result.resultMetadata, let sequenceValue = metaData[Int(kResultMetadataTypeStructuredAppendSequence.rawValue)] as? Int, let parity = metaData[Int(kResultMetadataTypeStructuredAppendParity.rawValue)] as? Int else { return } // sequence: ಡΈऔͬͨQRίʔυͷ൪߸ 4bit + τʔλϧͷQRίʔυ਺ 4bit let bit = String(sequenceValue, radix: 2) let pad = String(repeating: "0", count: (8 - bit.count)) let sequence = pad + bit let current = Int(sequence.prefix(4), radix: 2)! let total = Int(sequence.suffix(from: 4), radix: 2)! … }

γϯϘϧҐஔ/߹ܭ਺ͱύϦςΟ͕औΕΔ @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity guard let metaData = result.resultMetadata, let sequenceValue = metaData[Int(kResultMetadataTypeStructuredAppendSequence.rawValue)] as? Int, let parity = metaData[Int(kResultMetadataTypeStructuredAppendParity.rawValue)] as? Int else { return } // sequence: ಡΈऔͬͨQRίʔυͷ൪߸ 4bit + τʔλϧͷQRίʔυ਺ 4bit let bit = String(sequenceValue, radix: 2) let pad = String(repeating: "0", count: (8 - bit.count)) let sequence = pad + bit let current = Int(sequence.prefix(4), radix: 2)! let total = Int(sequence.suffix(from: 4), radix: 2)! … } @objc func captureResult(_ capture: ZXCapture!, result: ZXResult!) { guard let _ = result else { return } // ෼ׂQRίʔυͷ৔߹ɺZXResult#resultMetadata ͷҎԼ2ͭΛ֬ೝͯ͠ // Ͳͷ෦෼ͷQRίʔυ͕ಡΈࠐ·Εͨͷ͔൑ఆ͢Δ͜ͱ͕Ͱ͖Δ // - kResultMetadataTypeStructuredAppendSequence // - kResultMetadataTypeStructuredAppendParity // sequence: ಡΈऔͬͨQRίʔυͷ൪߸ 4bit + τʔλϧͷQRίʔυ਺ 4bit let bit = String(sequenceValue, radix: 2) let pad = String(repeating: "0", count: (8 - bit.count)) let sequence = pad + bit let current = Int(sequence.prefix(4), radix: 2)! let total = Int(sequence.suffix(from: 4), radix: 2)! … } guard let metaData = result.resultMetadata, let sequenceValue = metaData[Int(kResultMetadataTypeStructuredAppendSequence.rawValue)] as? Int, let parity = metaData[Int(kResultMetadataTypeStructuredAppendParity.rawValue)] as? Int else { return }

ղܾ ΍ͬͨʔʂʂ

ຊ౰ʹʁ

ZXingObjC ͷऑ఺ • ಡΈऔΓਫ਼౓͕͋·Γߴ͘ͳ͍ • AVFoundation ΍σϯιʔެࣜΞϓϦʹൺ΂Δͱ݁ߏ ͕͔͔࣌ؒΔ͜ͱ͕͋Δ • ։ൃ͕࣮࣭ࢭ·͍ͬͯΔ • Swift ʹஔ͖׵͍͑ͨͱ͔ॻ͔ΕͯΔ͚Ͳ͍ͭʹͳΔ ͔·ͬͨ͘Θ͔Βͳ͍

ઈ๬ ະདྷ͕ͳ͍

ઈ๬ ະདྷ͕ͳ͍ ʁ

ઈ๬ ະདྷ͕ͳ͍ ʁ 2017 ೥ ൒͹ ·Ͱͷ͓࿩

࣌͸ྲྀΕ… 2018 ೥ 9 ݄ 1 ೔

iOS ͷόʔδϣϯγΣΞભҠ ೥݄ ݄ ݄ ݄ ݄ ೥݄ ݄ ݄ ݄ iOS 11 iOS 10 iOS 9 or Earlier ※ 2018೥9݄͸༧ଌ

iOS 10 ͷαϙʔτ ͦΖͦΖ੾Ε·͢ΑͶʁ ࠓ݄͸ iOS 12 ͕ϦϦʔε͞Ε·͢

CIQRCodeDescriptor ਅͷٹੈओ in AVMetadataMachineReadableCodeObject

ϓϩύςΟ var corners: [CGPoint] A Swift array of corner points. var stringValue: String? Returns the error corrected data decoded into a human- readable string. var descriptor: CIBarcodeDescriptor? A barcode description for use in Core Image.

CIQRCodeDescriptor ͱ͸

CIQRCodeDescriptor ͱ͸ • iOS 11 Ͱ௥Ճ͞ΕͨڧྗͳΫϥε • ந৅Ϋϥε CIBarcodeDescriptor ͷαϒΫϥε • QRίʔυΛੜ੒͢ΔͨΊʹඞཁे෼ͳσʔλΛ࣋ͭ • CIFilter Ͱ QRίʔυը૾Λੜ੒͢Δ͜ͱ΋Ͱ͖Δ

CIQRCodeDescriptor ͱ͸ • iOS 11 Ͱ௥Ճ͞ΕͨڧྗͳΫϥε • ந৅Ϋϥε CIBarcodeDescriptor ͷαϒΫϥε • CIFilter Ͱ QRίʔυը૾Λੜ੒͢Δ͜ͱ΋Ͱ͖Δ func generateQRCodeImage(from descriptor: CIQRCodeDescriptor) -> UIImage? { let inputParams: [String: Any] = ["inputBarcodeDescriptor": descriptor] let barcodeCreationFilter = CIFilter(name: "CIBarcodeGenerator", parameters: inputParams) guard let outputImage = barcodeCreationFilter?.outputImage, let cgImage = CIContext().createCGImage(outputImage, from: outputImage.extent) else { return nil } return UIImage(cgImage: cgImage) }

େࣄͳͷ͸͜ͷ 2 ͭ var errorCorrectedPayload: Data The error-corrected payload containing the data encoded in the QR code. var symbolVersion: Int The version of the QR code.

ࠇനϞδϡʔϧͷೝࣝ START ܕࣜ৘ใͷ෮߸ ܕ൪ͷܾఆ ϚεΫॲཧͷղআ σʔλ & ޡΓగਖ਼ίʔυޠͷ෮ݩ

ޡΓగਖ਼ ޡΓݕग़ σʔλΛ෮߸ σʔλೖख END ޡΓφγ ޡΓΞϦ AVMetadataMachine ReadableCodeObject ͷ stringValue ͸ ෳ߹ޙͷίϨ

ޡΓగਖ਼ ޡΓݕग़ σʔλΛ෮߸ σʔλೖख END ޡΓφγ ޡΓΞϦ errorCorrectedPayload ͸ ίίͷσʔλʂ

େࣄͳͷ͸͜ͷ 2 ͭ var errorCorrectedPayload: Data The error-corrected payload containing the data encoded in the QR code. var symbolVersion: Int The version of the QR code.

େࣄͳͷ͸͜ͷ 2 ͭ var errorCorrectedPayload: Data The error-corrected payload containing the data encoded in the QR code. var symbolVersion: Int The version of the QR code.

จࣈ਺ࢦࣔࢠͷϏοτ਺ ܕ൪ TZNCPM7FSTJPO ਺ࣈ Ϟʔυ ӳ਺ࣈ Ϟʔυ ϏοτόΠτ Ϟʔυ ׽ࣈ Ϟʔυ ʙ ʙ ʙ

symbolVersion + errorCorrectedPayload σίʔυͰ͖Δ

ͱ͍͏͜ͱ͸…ʁ

iOS 11 Ҏ߱ͷੈքͰ͸ 1. AVCaptureSession ͰಡΈऔΔ ߴਫ਼౓Ͱ଎͍

iOS 11 Ҏ߱ͷੈքͰ͸ AVMetadata Machine ReadableCode Object 2. CIQRCodeDescriptor #errorCorrectedPayload ΛऔΓग़͢ 1. AVCaptureSession ͰಡΈऔΔ

iOS 11 Ҏ߱ͷੈքͰ͸ AVMetadata Machine ReadableCode Object 2. CIQRCodeDescriptor #errorCorrectedPayload ΛऔΓग़͢ σίʔυ͢Δ 1. AVFoundation ͰಡΈऔΔ ͕Μ͹ͬͯ 3.

ղܾ ΍ͬͨʔʂʂࠓ౓ͦ͜

σίʔυ͢Δ ͕Μ͹ͬͯ 3. ͕Μ͹ͬͯ

͕Μ͹Δ = ࣗલͰσίʔυॲཧΛॻ͘

ࣗલσίʔυͷํ਑ • શϞʔυʹରԠ͠Α͏ͱࢥͬͨΒʢͨͿΜʣ݁ߏେม… • ͱ͍͏͔σϯιʔެࣜΞϓϦ΋ରԠͯ͠ͳ͍ • ࠷௿ݶಡΈऔΓ͍ͨQRίʔυͷσίʔυॲཧͰଥڠ • ಠࣗΤϯίʔυ͞ΕͨQRίʔυ΋σίʔυͰ͖Δ͠ɺ ෯͕޿͕Δʢͱ͔ॻ͍ͯΔ͏ͪʹσϯιʔ͕Ԍ্͠·ͨ͠ʣ => https://srad.jp/submission/78134/

σίʔυͷҰྫ https://github.com/ monoqlo/QRCodeReader

࣌ؒ͋Ε͹ গ͚ͩ͠ DEMO

·ͱΊ

0. iOS 10 ͷαϙʔτΛ੾ΔʢҰ൪େࣄʣ

·ͱΊʢiOS 11 Ҏ߱ͷੈքʣ 1. AVCaptureSession ͰಡΈऔΔ AVMetadata Machine ReadableCode Object 2. CIQRCodeDescriptor #errorCorrectedPayload ΛऔΓग़͢ ͕Μ͹ͬͯσίʔυ͢Δ 3.

Appendix • Speaker Info @monoqlo • This Slide URL https://speakerdeck.com/monoqlo/iosdc-2018