たのしいAirPlay - Speaker Deck

たのしいAirPlay

by toshi0383

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ͨͷ͍͠AirPlay 2019/03/27 Toshihiro Suzuki

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ετϦʔϛϯάΫϥΠΞϯτ

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• ΞδΣϯμ • جຊฤ • Ԡ༻ฤ(͓·͚)

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جຊฤ

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࢖͍ํ ίϯτϩʔϧηϯλʔ AirPlayϘλϯ(MPVolumeView) ҎԼͷμΠΞϩά͸࣮૷͢Δඞཁͳ͠ʢͰ͖ͳ͍ʣ

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AirPlay࠶ੜͱ͸ • AppleTVΛհͨ͠ɺ֎෦σΟεϓϨΠଆͰͷϑϧεΫϦʔϯ࠶ੜ • ϛϥʔϦϯάͱ͸ҟͳΔ

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AirPlay != ϛϥʔϦϯά ίϯτϩʔϧηϯλʔ Lightning => HDMIίωΫλ

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AirPlay != ϛϥʔϦϯά AirPlay Mirroring ϑϧεΫϦʔϯಈը࠶ੜ ಈըʹؔ܎ͳ͘*1ɺ  iPhoneͷը໘͕ͦͷ··දࣔ͞ΕΔ͚ͩ iPhoneଆͰ͸࠶ੜ͞Εͳ͍ɻ *1 DRMͷ৔߹͸ಈը͚͕ͩදࣔ͞Εͳ͍౳ͷOS੍ޚ͕ೖΔ

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੍ݶ͢Δϑϥά • AVPlayer.allowsExternalPlayback • AVPlayer.usesExternalPlaybackWhileExternalScreenIsActive ֎෦σΟεϓϨΠͰͷ࠶ੜΛڐՄ͢Δ͔Ͳ͏͔ ֎෦σΟεϓϨΠ͕͋Δ࣌ʹAirPlay࠶ੜΛࣗಈͰ։࢝͢Δ͔Ͳ͏͔

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AVPlayer allowsExternalPlayback • True: AirPlay΍HDMIܦ༝ͰͷಈըɾԻ੠࠶ੜ͕Մೳ • False: AirPlay΍HDMIܦ༝Ͱͷಈը࠶ੜ͕ېࢭ͞ΕΔ

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AVPlayer allowsExternalPlayback • True: AirPlay΍HDMIܦ༝ͰͷಈըɾԻ੠࠶ੜ͕Մೳ • False: AirPlay΍HDMIܦ༝Ͱͷಈը࠶ੜ͕ېࢭ͞ΕΔ

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AVPlayer allowsExternalPlayback: False Ի੠͸ૹ৴͞Εͯ͠·͏ • ࢓༷ɻ • ࢀߟ: ະղܾͷSO: https://stackoverﬂow.com/questions/ 43041220/disable-airplay-with-allowsexternalplayback- but-audio-is-still-playing

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AVPlayer usesExternalPlaybackWhileExternalScree nIsActive • ֎෦σΟεϓϨΠ͕͋Δ࣌ʹAirPlay࠶ੜΛࣗಈͰ։࢝͢Δ ͔Ͳ͏͔

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ϛϥʔϦϯά + ಈը࠶ੜத ͷ৚݅ͰউखʹAirPlay͢Δ͔Ͳ͏͔ AirPlay Mirroring ϑϧεΫϦʔϯಈը࠶ੜ ಈըʹؔ܎ͳ͘*1ɺ  iPhoneͷը໘͕ͦͷ··දࣔ͞ΕΔ͚ͩ iPhoneଆͰ͸࠶ੜ͞Εͳ͍ɻ =>

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ঢ়ଶΛऔಘ͢Δ • AVPlayer.isExternalPlaybackActive • ಈը࠶ੜʹ͔͔ΘΒͣɺAirPlayதɺMirroringதͷݕ஌ʁ ֎෦σΟεϓϨΠͰͦͷಈը͕࠶ੜத͔Ͳ͏͔ ૉ௚ͳAPI͸ͳ͍

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AirPlay / Mirroringݕ஌ͷ࡞Γํ

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AirPlay / Mirroringݕ஌ͷ࡞Γํ ·ͣࣗલͷϑϥάΛ༻ҙ͠·͢ɻ NSNotiﬁcation΍KVOΛى఺ͱ͢Δ

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AirPlay / Mirroringݕ஌ͷ࡞Γํ ࣮ػͰಈ࡞֬ೝͯ͠ϚτϦΫεʹ͠·͢ɻ

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AirPlay / Mirroringݕ஌ͷ࡞Γํ ϑϥά͕ݕ஌͍ͨ͠ঢ়ଶʹͳͬͨ࣌ʹॲཧΛ͢Δɻ ྫ: AppleTVʹAirPlay઀ଓ͍ͯ͠Δ࣌͸GoogleCastϘλϯΛදࣔ͠ͳ͍ɺͳͲɻ

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• AirPlay઀ଓத: isAirPlaying:true && isMirroring:false • AirPlay࠶ੜத: AirPlay઀ଓத && isExternalPlaybackActive • ϛϥʔϦϯά઀ଓத: isMirroring:true usesExternalPlaybackWhileExternalScreenIsActive:falseͷ৔߹ ͳΜͱ͔ͳΓͦ͏

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AirPlay / Mirroringݕ஌ͷ஫ҙ఺ ֤ϑϥά͸͙͢ʹ੾ΓସΘΓ·ͤΜɻ ޡݕ஌Λ๷͙ͨΊɺ࠷௿0.5ඵఔ౓͸଴ͭඞཁ͕͋Γ·͢ɻ

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AirPlay / Mirroringݕ஌ͷ࡞Γํ օ͞Μ΋ͥͻ͓͏ͪͰ࡞ͬͯΈͯͶ

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͜͜Ͱɺ abema-iosͷࠓճͷରԠʹ͍ͭͯ • ΞϓϦ಺ʹAirPlayϘλϯͷ࣮૷͸ͳ͔ͬͨɻ • ֎෦ग़ྗ(allowsExternalPlayback)͸ېࢭ͍ͯ͠ͳ͔ͬͨͨΊɺ ίϯτϩʔϧηϯλʔ͔Β͸AirPlay࠶ੜͰ͖ͨɻ • ͱΓ͋͑ͣAirPlayϘλϯ͚ͩग़ͦ͏ɻ

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αΫοͱ࣮૷ ઌ΄Ͳͷϑϥάͷ࣮૷ʹΑͬͯɺϘλϯͷग़͠Θ ͚΍tintͷมߋ͕όονϦܾ·͍ͬͯΔɻ

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αΫοͱ࣮૷ ઌ΄Ͳͷϑϥάͷ࣮૷ʹΑͬͯɺϘλϯͷग़͠Θ ͚΍tintͷมߋ͕όονϦܾ·͍ͬͯΔɻ LGTM

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͝੩ௌ͋Γ͕ͱ͏͟͝ ͍·ͨ͠

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͝੩ௌ͋Γ͕ͱ͏͟͝ ͍·ͨ͠ ͋Εʁ

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͝੩ௌ͋Γ͕ͱ͏͟͝ ͍·ͨ͠ ࢹௌϩάऔΕͯͳ͘ͳ͍ʁ

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͝੩ௌ͋Γ͕ͱ͏͟͝ ͍·ͨ͠ ͦΜͳ͸ͣ͸..

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timedMetadataऔΕͳ͍໰୊ • AppleTV 4th Gen.(2019೥3݄࣌఺Ͱ࠷৽ܕ)Ͱ͸ɺAirPlayதʹ timedMetadata͕औΕͳ͍ɻ • 3rd Gen.ͳΒऔΕΔɻ(ͦΕҎલͷόʔδϣϯ͸ະݕূͰෆ໌) • ʮόά͚ͩͲ௚͢༧ఆ͸ࠓͷͱ͜Ζ͋Γ·ͤΜʯ ࢹௌϩάɺ࠶ੜதͷίϯςϯπλΠτϧͷදࣔɺ൪એCMதͷ ࢹௌ༧໿ػೳͳͲɺଟ͘ͷػೳ͕timedMetadataґଘɻ

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ऴΘͬͨ

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ͨͷ͍͠AirPlay جຊฤ͓ΘΓ

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Ԡ༻ฤ(͓·͚)

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εΫϦʔϯϨίʔσΟϯά • iOS11~ • UIScreen.isCaptured͸ϛϥʔϦϯάͰ΋ ൓Ԡ͢Δ఺ʹ஫ҙɻ • AirPlay࠶ੜத͸֎෦σΟεϓϨΠଆ͕࿥ը ͞ΕΔ͜ͱ͸ͳ͔ͬͨɻ • ΞϓϦଆͰ͸࠶ੜ͞Εͳ͍ͨΊɺAirPlay࠶ ੜதͷ࿥ը͸ڐՄͯ͠໰୊ͳ͍͸ͣɻ

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όοΫάϥ΢ϯυ࠶ੜͰAirPlay ͸ܧଓͰ͖Δͷʁ • Ͱ͖·͢ɻ • AVPlayer.usesExternalPlaybackWhileExternalScreenIsA ctive: True ͩͱ͏·͍͔͘ͳ͔ͬͨͨΊ஫ҙɻ

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FairPlay • DRMͷ৔߹͸جຊతʹOSଆͰ֎෦ग़ྗ͸੍ݶ͞ΕΔɻΞ ϓϦଆ͸੍ޚ͢Δඞཁ͕ͳ͍΋͘͠͸Ͱ͖ͳ͍ɻ • AirPlayͱ੾Γସ͑Δͱ࠶ੜηογϣϯͱͯ͠͸ผѻ͍ʹͳ Δ໛༷ͰɺFairPlayͷ࢓༷ͰΩʔͷ࠶औಘ͕࣮ߦ͞ΕΔɻͦ ͷͨΊAirPlayͱ௨ৗ࠶ੜͰckcσʔλʢ෮߸ΩʔʣΛ࢖͍ ճ͢͜ͱ͸ෆՄೳɻʢ࢖͍ճͨ͠ͱͯ͠΋࠶ੜΤϥʔͱͳ Δʣ

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FairPlay • AirPlay͸ωοτϫʔΫ͕͋Δલఏͷ ͨΊ͔ɺPersistent Content Key΋ ར༻ෆՄɻ • persistentContentKey͕࢖͑Δલఏ Ͱ࣮૷͍ͯ͠ΔͱDRMίϯςϯπ ͕࠶ੜΤϥʔʹͳΔͨΊ஫ҙɻ

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ഒ଎࠶ੜͱAppleTV Remote • AppleTV Remote͔Βpause=>play͢Δͱ rate:1.0ʹ໭ͬͯ͠·͍ɺ࠶ੜ଎౓͕ΞϓϦͷ දࣔͱ৯͍ҧ͏ঢ়ଶʹͳΔ • YouTube, dTVΛ֬ೝͨ͠ͱ͜ΖಛʹରԠͯ͠ ͓ΒͣɺϢʔβ͕࠶౓࠶ੜ଎౓Λઃఆ͠௚͢ ඞཁ͕͋Δɻ • ͜ͷέʔεΛݕ஌ͯ͠࠶౓rateΛηοτ͠௚͢ ͜ͱͰղܾͰ͖Δ͕ɺҰॠrate:1.0ͷ··࠶ੜ ͞ΕΔͷ͸ճආͰ͖ͳ͍ɻ

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AirPlayͨͷ͍͠ • AirPlay != ϛϥʔϦϯά • ϑϥάྨͷ؅ཧ͕ҙ֎ͱ൥ࡶͳͷͰɺؾΛ͚ͭ·͠ΐ͏ɻ • timedMetadata͸औΕ·ͤΜɻ

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͓͠·͍

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ϝϯόʔ΅͠Ύ͏ • ετϦʔϛϯάΫϥΠΞϯτ • ഑৴αʔόʔ • ίϯςϯπϚωδϝϯτ • etc.. ͨͷ͍͠՝୊͕͍ͬͺ͍ʂ