UVC(USB video class)とマルチプラットフォーム - UVC support by Apple multiplatform

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67$ 64#WJEFPDMBTT ͱ ϚϧνϓϥοτϑΥʔϜ 67$TVQQPSUCZ"QQMFNVMUJQMBUGPSN ೳొཁ !OPUPSPJE J1IPOFΞϓϦ։ൃऀ೥݄೔

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࿩͢಺༰ w ϚϧνϓϥοτϑΥʔϜͰͷ֎෦ΧϝϥσόΠε΁ͷΞΫηε w ϚϧνϓϥοτϑΥʔϜͰͷϓϨϏϡʔͷ࣮૷ w ϓϨϏϡʔͷճసରԠ

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࿩͞ͳ͍಺༰ w ֎෦σόΠεͷ੾அݕ஌ w ΩϟϓνϟʔσόΠεͷࣗಈ઀ଓ w Ի੠ͷύεεϧʔػೳ

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͓୊໨ w "QQMF੡඼ΛήʔϜ༻σΟεϓϨΠʹ͍ͨ͠ w 67$ 64#WJEFPDMBTT ͱ"QQMF੡඼ w "QQMFͷηογϣϯΛௐ΂Δ w σϞϯετϨʔγϣϯ w ·ͱΊ

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ࣗݾ঺հ w J1IPOFΞϓϦ։ൃऀ 9!OPUPSPJE w ΞϓϦ։ൃऀྺ ʙ w ΞϓϦ࡞࢛ͬͯ൒ੈل ೥౸ୡ w झຯ͸ήʔϜ ൓ࣹਆܦ͕ਰ͑ͱ໨ͷർΕ͕ൈ͚ͳ͍

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"QQMF੡඼Λ ήʔϜ༻σΟεϓϨΠʹ͍ͨ͠

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਺ʑͷ৽ػೳ w ελϯόΠϞʔυ w ετϨʔδ΁ͷಈը࿥ը J1IPOF QSP w ͜Ε͸ͱ͍ͬͨػೳ͸๡͔͔ͬͨ͠ ΋ʜ w ϓϩάϥϛϯάपΓ ಺෦త ͷڧԽ w 6*पΓͷॆ࣮ "OJNBUJPO 8JEHFU w 0CTFSWBUJPOGSBNFXPSL J04ϦϦʔε͞Ε·ͨ͠ IUUQTEFWFMPQFSBQQMFDPNXXED UJNF

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64#पลػثʹ67$௥Ճ w 64#7JEFP$MBTTʹରԠ w 64#͕౥ࡌ͞ΕͨσόΠεʹ ରԠ J1BE1SP J1BE04΋ϦϦʔε IUUQTEFWFMPQFSBQQMFDPNXXED UJNF

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ήʔϜσΟεϓϨΠԽΛ঺հ͢Δ ಈը഑৴ऀଟ਺ɻ J1BE04ͷ৽ػೳ͕๡͍͠ͷͰϏσΦΩϟϓνϟʔ͙Β͍͔͠࿩୊ ͕ͳ͍ͱ͍͏ͷ͕ਖ਼௚ͳͱ͜Ζ

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ήʔϜσΟεϓϨΠԽΛ ΍ͬͯΈ͍ͨ

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झຯͱ࣮ӹ΋૬·ͬͨJ1BEͷ ήʔϜσΟεϓϨΠԽʹऔΓ૊Ή

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67$ 64#WJEFPDMBTT ͱ "QQMF੡඼

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67$ 64#WJEFPDMBTT ͱ͸ 64#࢓༷ࡦఆஂମʹΑΔϏσΦΩϟϓνϟσόΠεͷ࢓༷ w υϥΠόʔෆཁ w ֤छσόΠε w 64#ΧϜ w ϏσΦΩϟϓνϟʔσόΠε w )%.*εΠονϟʔ

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"QQMF.౥ࡌ.BDͰಈ͘΋ͷΛ ୳͢ͱJ1BEͰ΋ಈ࡞͢Δ

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ྫ&MHBUPࣾͷήʔϜΩϟϓνϟʔσόΠε ͭ͸ݟͨ໨͸ಉ͕ͩ͡Ұํ͸67$͸αϙʔτ͍ͯ͠ͳ͍ &MHBUP(BNF$BQUVSF)%4 &MHBUP(BNF$BQUVSF)%4 "QQMF.ରԠ *OUFM$16ͷΈ

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w ࣮੷ͷ͋Δ67$σόΠεΛೖख ͢Δ "QQMF.Ҏ߱ରԠ w 0#4ରԠͷ67$σόΠεΛೖख ͢Δ J1BEʹରԠͨ͠67$ σόΠεͷೖख IUUQTEFWFMPQFSBQQMFDPNXXED UJNF

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"QQMFۘ੡ηογϣϯͱαϯϓϧ

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88%$TFTTJPO w %FWFMPQFSΞϓϦͰFYUFSOBMͰ ݕࡧ w IUUQTEFWFMPQFSBQQMFDPN XXED w ೔ຊޠ຋༁͋Γ w αϯϓϧίʔυ͋Γ w "7$BNͰݕࡧ J1BE04Ͱ֎෦ΧϝϥΛαϙʔτ

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ηογϣϯJ1BE04Ͱ֎෦ΧϝϥΛαϙʔτ 4VQQPSUFYUFSOBMDBNFSBTJOZPVSJ1BE04BQQ w J1BEͰͷσόοάํ๏ w ֎෦σόΠεͱ಺ଂΧϝϥͷ૒ํΛαϙʔτ͢ΔػೳΛ௥Ճ w J1BEճస࣌ͷϓϨϏϡʔө૾ॻ͖ग़͠αϙʔτػೳ w ࣗಈతʹΧϝϥΛ੾Γସ͑ػೳ w ֎෦σόΠεͷ੾அݕ஌

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ηογϣϯJ1BE04Ͱ֎෦ΧϝϥΛαϙʔτ 4VQQPSUFYUFSOBMDBNFSBTJOZPVSJ1BE04BQQ w "7'PVOEBUJPOGSBNFXPSLʹ͍ͭͯઆ໌ w J1BEͰͷσόοάํ๏ w ֎෦σόΠεͱ಺ଂΧϝϥͷ૒ํΛαϙʔτ͢ΔػೳΛ௥Ճ w J1BEճస࣌ͷϓϨϏϡʔө૾ॻ͖ग़͠αϙʔτػೳ w ࣗಈతʹΧϝϥΛ੾Γସ͑ػೳ w ֎෦σόΠεͷ੾அݕ஌ "QQMF͸ίϛϡχέʔγϣϯ༻ө૾Λॏཁࢹ

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"7'PVOEBUJPOΛը໘ʹϓϨϏϡʔΛදࣔ͢Δ

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ᶃೖྗσόΠε *OQVU Λݕࡧ͢Δ ᶄηογϣϯʹ*OQVUΛܨ͛Δ ᶅηογϣϯ͔ΒϓϨϏϡʔ 0VUQVU ΁ܨ͛Δ "7'PVOEBUJPOΛը໘ʹϓϨϏϡʔΛදࣔ͢Δ

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αϯϓϧ"7$BN w ө૾ͷϓϨϏϡʔͱ࿥ըػೳͷαϯϓϧ w IUUQTEFWFMPQFSBQQMFDPNEPDVNFOUBUJPOBWGPVOEBUJPO DBQUVSF@TFUVQBWDBN@CVJMEJOH@B@DBNFSB@BQQ w J04J1BE04༻ w ಺ଂσόΠε͓Αͼ֎෦σόΠεͷ੾Γସ͑ʹରԠ w "7'PVOEBUJPOGSBNFXPSLͷػೳ໢ཏΛ໨ࢦͨ͠αϯϓϧ w Մಡੑѱ͠ ߦ௒͑ͷιʔείʔυ͋Γ

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αϯϓϧίʔυ͸༗೉͍͕

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ήʔϜը໘ग़͢ʹ͸৑௕͗͢Δ

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J1BENBD04Ͱಈ͘ ؆ܿͳαϯϓϧίʔυ͕ཉ͍͠

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ͳΒ͹ࣗ෼Ͱ࡞Δ͔͠ͳ͍

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σϞϯετϨʔγϣϯ

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αϯϓϧίʔυ J1BE04ʙ 4JNQMF(BNF.POJUPS HJUIVCDPNOPUPSPJE4JNQMF(BNF.POJUPS

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4JNQMF(BNF.POJUPS IUUQTHJUIVCDPNOPUPSPJE4JNQMF(BNF.POJUPS w OPUPSPJE4JNQMF(BNF.POJUPSͰݕࡧ w 67$σόΠεͷ಺༰Λදࣔ ࿥ըػೳͳ͠ w J1BE04NBD04ରԠ w ը໘ճసରԠ w ιʔείʔυϑΝΠϧͷߦ਺࠷େߦ

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4JNQMF(BNF.POJUPS IUUQTHJUIVCDPNOPUPSPJE4JNQMF(BNF.POJUPS w Ͱ͖ͳ͍͜ͱ w ֎෦Ωϟϓνϟʔͷ੾அݕ஌ w ΦʔσΟΦ࠶ੜ

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4JNQMF(BNF.POJUPS IUUQTHJUIVCDPNOPUPSPJE4JNQMF(BNF.POJUPS w ϓϩδΣΫτઃఆϙΠϯτ w J1BE04NBD04ͱ΋ʹ1SJWBDZ $BNFSB6TBHF%FTDSJQUJPO͕ඞཁ w *OGPͰઃఆ w NBD04͸αϯυϘοΫεͰ64#ɺ $BNFSBΛࢦఆ w 4JHOJOH$BQBCJMJUJFT"QQ 4BOECPY

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4JNQMF(BNF.POJUPS IUUQTHJUIVCDPNOPUPSPJE4JNQMF(BNF.POJUPS w J04ͱNBD04ͷࠩҟΛٵऩ͢Δ w J04NBD04ͷίʔυΛJGPT ʙFOEJGͰͦΕͧΕهड़ w 6*7JFX3FQSFTFOUBCMF w /47JFX3FQSFTFOUBCMF w ඳըΛ୲౰͢Δ$"-BZFS ͱ೿ੜΫϥε͸ڞ௨ w $"-BZFSͷѻ͍ํ͸J04ͱNBD04ͰҟͳΔ #if os(iOS) import UIKit #elseif os(macOS) import AppKit #endif

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4JNQMF(BNF.POJUPSᶃ ֎෦σόΠεΛݟ͚ͭΔ // external guard let captureDevice = AVCaptureDevice.default(AVCaptureDevice.DeviceType.external, for: .video, position: .unspecified) else { teardownAVCapture() return } let session = AVCaptureSession() guard session.canSetSessionPreset(.hd1920x1080) else { teardownAVCapture() return } session.sessionPreset = .hd1920x1080 $BQUVSF.BOBHFSTXJGU ֎෦ FYUFSOBM σόΠεΛ)%ը࣭Ͱѻ͏

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4JNQMF(BNF.POJUPSᶄ ֎෦σόΠεΛηογϣϯ΁௥Ճ $BQUVSF.BOBHFSTXJGU let deviceInput = try AVCaptureDeviceInput(device: captureDevice) if session.canAddInput(deviceInput) { session.addInput(deviceInput) print("added session") } else { print("not add session") } ηογϣϯ΁ͷ௥Ճ͸಺ଂΧϝϥͱมΘΓͳ͠

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4JNQMF(BNF.POJUPSᶅ ϓϨϏϡʔΛ༻ҙ $BQUVSF.BOBHFSTXJGU ηογϣϯܦ༝ͰϓϨϏϡʔͱͯ͠දࣔ͢Δө૾Λ౉͢ previewLayer = AVCaptureVideoPreviewLayer(session:session) if let previewLayer { previewLayer.backgroundColor = CGColor(gray: 0.5, alpha: 1.0) previewLayer.videoGravity = .resizeAspect } self.session = session DispatchQueue.global(qos: .background).async { session.startRunning() }

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4JNQMF(BNF.POJUPSᶆ ֎෦಺ଂؚΊͨճసΛ੍ޚ $BQUVSF.BOBHFSTXJGU "QQMF͕༻ҙͨ͠"7$BQUVSF%FWJDF3PUBUJPO$PPSEJOBUPS͕J1BEͷճసͱ֎෦σό Πεճసͷ൥ࡶͳॲཧΛҾ͖ड͚Δ let rotationCoordinator = AVCaptureDevice.RotationCoordinator(device: captureDevice, previewLayer: previewLayer) previewLayer.connection?.videoRotationAngle = rotationCoordinator.videoRotationAngleForHorizonLevelPreview

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4JNQMF(BNF.POJUPSᶆ ϏσΦϛϥʔϦϯά͸8FCΧϜ͕σϑΥϧτ $BQUVSF.BOBHFSTXJGU ࣗಈϛϥʔϦϯάઃఆΛղআ্ͨ͠ͰɺϛϥʔϦϯάΛແޮʹ͢Δඞཁ͋Γ // disable mirroring previewLayer.connection?.automaticallyAdjustsVideoMirroring = false previewLayer.connection?.isVideoMirrored = false

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·ͱΊ wJ1BE04Ͱ67$ ϏσΦΩϟϓνϟσόΠε ʹରԠ͠·ͨ͠ w67$σόΠεͷબఆ͕ϋʔυϧ͕ߴ͍Ͱ͢ w"QQMF͸ίϛϡχέʔγϣϯө૾޲͚ͷར༻Λ૝ఆ͍ͯ͠·͢ wήʔϜϞχλʔͱͯ͠ѻ͏ʹ͸σϑΥϧτઃఆΛมߋ͢Δඞཁ͋Γ wJ1BE04NBD04ڞ௨͕ͩ04͝ͱʹهड़͢΂͖Օॴ͋Γ·͕͢ଟ͘͸ ͋Γ·ͤΜ wJ1BENBD04ͰήʔϜϥΠϑΛָ͠Έ·͠ΐ͏

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ࢀߟ w 4VQQPSUFYUFSOBMDBNFSBTJOZPVSJ1BE04 BQQ88%$7JEFPT"QQMF%FWFMPQFS w IUUQTEFWFMPQFSBQQMFDPN XXED w "7$BN#VJMEJOHB$BNFSB"QQc"QQMF %FWFMPQFS%PDVNFOUBUJPO w IUUQTEFWFMPQFSBQQMFDPN EPDVNFOUBUJPOBWGPVOEBUJPO DBQUVSF@TFUVQ BWDBN@CVJMEJOH@B@DBNFSB@BQQ w .BD04ͷγϯάϧ΢Οϯυ΢ΞϓϦέʔγϣ ϯΛ࡞Δͱ͖ʹ΍͓ͬͯ͘͜ͱ w IUUQT[FOOEFWPIOBNJBSUJDMFT CEBEBCB w OPUPSPJE4JNQMF(BNF.POJUPSFYUFSOBM WJEFPEFWJDFQSFWJFXTBNQMFDPEFGPS BQQMFNVMUJQMBUGPSN J1BE04 NBD04 w IUUQTHJUIVCDPNOPUPSPJE 4JNQMF(BNF.POJUPS w 4XJGU6*Ή͚ʹ੔ཧ͞Εͨঢ়ଶ؂ࢹ 0CTFSWBUJPO4QFBLFS%FDL w IUUQTTQFBLFSEFDLDPNOPUPSPJE TXJGUVJNVLFOJ[IFOHMJTBSFUB[IVBOHUBJ KJBOTIJPCTFSWBUJPO