Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
What is CVBuffer/ROPPONGI.swift
Search
noppefoxwolf
December 27, 2018
Programming
0
410
What is CVBuffer/ROPPONGI.swift
noppefoxwolf
December 27, 2018
Tweet
Share
More Decks by noppefoxwolf
See All by noppefoxwolf
Spice up your notifications/try!Swift25
noppefoxwolf
2
420
iOSの隠されたAPIを解明し、開発効率を向上させる方法/iOSDC24
noppefoxwolf
2
730
今から理解するApp Intentエコシステム/WWDC24Recap
noppefoxwolf
0
11
既存アプリをvisionOS対応してリリースした話/visionOS LT vol5
noppefoxwolf
0
190
UIのブラックボックスを探る/iOSDC23
noppefoxwolf
3
4.3k
CoreGraphicsでドット絵を描こう/iOSDC22
noppefoxwolf
0
2.5k
ランタイムデバッグのススメ/iOSDC21
noppefoxwolf
1
4.6k
google/mediapipe で始めるARアプリ開発/iOSDC2020
noppefoxwolf
1
1.5k
モバイルファーストなアプリを作るためにvearがしたこと/xRDCC
noppefoxwolf
0
140
Other Decks in Programming
See All in Programming
KotlinConf 2025 現地で感じたServer-Side Kotlin
n_takehata
1
220
第9回 情シス転職ミートアップ 株式会社IVRy(アイブリー)の紹介
ivry_presentationmaterials
1
170
Select API from Kotlin Coroutine
jmatsu
1
180
来たるべき 8.0 に備えて React 19 新機能と React Router 固有機能の取捨選択とすり合わせを考える
oukayuka
2
800
GoのWebAssembly活用パターン紹介
syumai
3
10k
XSLTで作るBrainfuck処理系
makki_d
0
210
iOSアプリ開発で 関数型プログラミングを実現する The Composable Architectureの紹介
yimajo
2
210
CSC307 Lecture 17
javiergs
PRO
0
120
エンジニア向け採用ピッチ資料
inusan
0
130
赤裸々に公開。 TSKaigiのオフシーズン
takezoux2
0
140
Webからモバイルへ Vue.js × Capacitor 活用事例
naokihaba
0
720
レガシーシステムの機能調査・開発におけるAI利活用
takuya_ohtonari
0
600
Featured
See All Featured
The Cult of Friendly URLs
andyhume
79
6.4k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
137
34k
It's Worth the Effort
3n
184
28k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
46
9.6k
Mobile First: as difficult as doing things right
swwweet
223
9.7k
Stop Working from a Prison Cell
hatefulcrawdad
269
20k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
The Language of Interfaces
destraynor
158
25k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
48
5.4k
Statistics for Hackers
jakevdp
799
220k
Speed Design
sergeychernyshev
31
1k
Art, The Web, and Tiny UX
lynnandtonic
299
21k
Transcript
$7#V⒎FSͷ 30110/(*TXJGUୈճձ
OPQQF ! 1PDPDIBJ04ΤϯδχΞ " ͖ͭͶ͔Θ͍͍ # 30110/(*TXJGUॳࢀઓ $ J04%$ͰඳըपΓͷΛ͠·͠ ͨW
ಈըΛѻ͏ػձͷ૿Ճ w ಈը৴ΞϓϦIFWDͷొɺ$PSF7JEFPʹ৮ΕΔػ ձ͕૿͍͑ͯΔ w σʔλϝσΟΞΛѻ͏#V⒎FSܥΫϥεͷར༻ස ૿Ճ w ΈΜͳɺؾ࣋ͪͰ$71JYFM#V⒎FSΛ͍ͬͯ·ͤΜ͔ʁ
#V⒎FSܥΫϥεͷۙگ w ݹ͍ΫϥεͳͷͰɺ΄΅มߋͳ͍ w ͔͠͠ڥมԽɺΫϥΠΞϯτͰͷσίʔυ 0QFO(-&4.FUBMͷσʔλ͠ʹར༻͞ΕΔ
$7#V⒎FS
$7#V⒎FS w $7#V⒎FSͷ$7$PSF7JEFPͷ$7 σʔλόοϑΝΛ৮Βͣʹ؆୯ʹಡΈॻ͖͢Δͨ Ίͷ*'
දతͳ$7#V⒎FSͷੜ w $7*NBHF#V⒎FS w $71JYFM#V⒎FS w $70QFO(-&45FYUVSF
$7#V⒎FS͡Όͳ͍ํ w $.4BNQMF#V⒎FS ͜Εҧ͏ w $.#MPDL#V⒎FS ͜Εҧ͏
ͲΜͳ࣌ʹऔಘͰ͖Δͷ͔ DJ*NBHFQJYFM#V⒎FS@d ͱ͔ MFUJC$.4BNQMF#V⒎FS(FU*NBHF#V⒎FS TC
$7#V⒎FSͷਖ਼ମ w $7*NBHF#V⒎FS public typealias CVImageBuffer = CVBuffer w $71JYFM#V⒎FS
public typealias CVPixelBuffer = CVImageBuffer w $70QFO(-&45FYUVSF public typealias CVOpenGLESTexture = CVImageBuffer
$71JYFM#V⒎FSWT$7*NBHF#V⒎FS w 2UZQFBMJBTͳΜͩ͠ಉ͡Ͱ͠ΐʁ w "ԶʹΘ͔ΒΜ
$71JYFM#V⒎FSWT$7*NBHF#V⒎FS w $71JYFM#VGGFS ϝϞϦͷϐΫηϧόοϑΝʹΞΫηε͢ΔͨΊͷΫϥ ε w $7*NBHF#VGGFS ϝϞϦͷը૾ʹΞΫηε͢ΔͨΊͷΫϥε
ϐΫηϧใΞΫηεͷྫ w ॎԣͷαΠζ w σʔλαΠζ ը૾ΞΫηεͷྫ w Χϥʔεϖʔε
υΩϡϝϯτ $7*NBHF#VGGFS(FU%JTQMBZ4J[F @ "$(4J[FTUSVDUVSFEFpOJOHUIFOPNJOBMEJTQMBZ TJ[FPGUIFCV⒎FS3FUVSOT[FSPTJ[FJGDBMMFE XJUIBOPO$7*NBHF#VGGFS3FGUZQFPS /6--
ݕূ var pb: CVPixelBuffer? = nil CVPixelBufferCreate(kCFAllocatorDefault, 128, 128, kCVPixelFormatType_32BGRA,
nil, &pb) CVImageBufferGetDisplaySize(pb!) // -> (128.0, 128.0)
ಈըΛѻ͏ػձͷ૿Ճ w ಈը৴ΞϓϦIFWDͷొɺ$PSF7JEFPʹ৮ΕΔػ ձ͕૿͍͑ͯΔ w σʔλϝσΟΞΛѻ͏#V⒎FSܥΫϥεͷར༻ස ૿Ճ w ΈΜͳɺؾ࣋ͪͰ$71JYFM#V⒎FSΛ͍ͬͯ·ͤΜ͔ʁ
ؾ࣋ͪͰ͍ͬͯΔ
6**NBHFͱͷҧ͍
6**NBHFͱͷҧ͍ w $7#V⒎FS ΞυϨεΛࢀর͍ͯ͠Δ͚ͩͳͷͰɺϩοΫ͢Δ͕ ίϐʔΩϟογϡ͞Εͳ͍ தؒϨϯμϦϯάউखʹ͞Εͳ͍ ϏσΦͷΑ͏ʹߴʹॲཧ͢Δඞཁ͕͋ΔՕॴʹ࠷ద
ΞυϨεͷϩοΫ $7#V⒎FSͷσʔλόοϑΝʹ$16͔ΒΞΫηε͢Δ ߹ΞυϨεΛϩοΫ͢Δඞཁ͕͋Δ CVPixelBufferLockBaseAddress(pb, .readOnly) defer { CVPixelBufferUnlockBaseAddress(pb, .readOnly) }
$71JYFM#V⒎FSͷதΛදࣔ͢Δ
Ұ൪؆୯ͳํ๏ $71JYFM#V⒎FS$**NBHF6**NBHF CIImage(cvPixelBuffer: CVPixelBuffer) UIImage(ciImage: ciImage)
.FUBMͰදࣔ͢Δ CVMetalTextureCacheܦ༝Ͱ $71JYFM#V⒎FS.5-5FYUVSF .5,7JFXͳͲͰදࣔ
0QFO(-&4Ͱදࣔ͢Δ CVOpenGLESTextureCacheܦ༝Ͱ $71JYFM#V⒎FS0QFO(-&45FYUVSF (-,7JFXͳͲͰදࣔ
$.4BNQMF#V⒎FSͱ
$.4BNQMF#V⒎FSͱ ɾඞͣ͠$71JYFM#V⒎FS͕ೖ͍ͬͯΔͱݶΒͳ͍
ͦ͏ͱࢥ͍ͬͯͨ ɾ$71JYFM#V⒎FS͔Β$.4BNQMF#V⒎FSΛ࡞Δ ɾϢʔεέʔε ɾར