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
460
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
What is CVBuffer/ROPPONGI.swift
noppefoxwolf
December 27, 2018
More Decks by noppefoxwolf
See All by noppefoxwolf
High performance GIF playback/iOSDC25
noppefoxwolf
1
600
Spice up your notifications/try!Swift25
noppefoxwolf
3
840
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
1.3k
今から理解するApp Intentエコシステム/WWDC24Recap
noppefoxwolf
0
74
既存アプリをvisionOS対応してリリースした話/visionOS LT vol5
noppefoxwolf
0
230
UIのブラックボックスを探る/iOSDC23
noppefoxwolf
3
5.1k
CoreGraphicsでドット絵を描こう/iOSDC22
noppefoxwolf
0
3.2k
ランタイムデバッグのススメ/iOSDC21
noppefoxwolf
1
5.6k
google/mediapipe で始めるARアプリ開発/iOSDC2020
noppefoxwolf
1
1.7k
Other Decks in Programming
See All in Programming
継続モナドとリアクティブプログラミング
yukikurage
3
480
OSINT for SRE: 学術論文とポストモーテムから探る システム障害の共通パターン / SRE NEXT 2026
tomoyk
1
3.4k
エンジニアと一緒にテストコードの設計と実装を改善した話
mototakatsu
0
260
Semantic Version 単位で戦略を柔軟に変えて、パッケージアップデートを自動化する
daitasu
1
350
地域 SRE コミュニティ最前線 - ホンマでっかSRE勉強会
tk3fftk
0
220
【やさしく解説 設計編・中級 #4】ルールの寿命と、システムの年輪
panda728
PRO
2
110
これからAgentCoreを触る方へトレンドはGatewayです
har1101
6
480
共通化で考えるべきは、実装より公開する型だった
codeegg
0
200
Signal Forms: Details & Live Coding @enterJS 2026 in Mannheim
manfredsteyer
PRO
0
220
どこまでゆるくて許されるのか
tk3fftk
0
470
例外の正しい扱い方 そのエラー try-catchして大丈夫?
jinwatanabe
0
360
Observability in Practice:Grafana 與 Edge Device SRE 的那些事
blueswen
0
190
Featured
See All Featured
Organizational Design Perspectives: An Ontology of Organizational Design Elements
kimpetersen
PRO
1
760
Testing 201, or: Great Expectations
jmmastey
46
8.2k
How to Grow Your eCommerce with AI & Automation
katarinadahlin
PRO
1
220
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Primal Persuasion: How to Engage the Brain for Learning That Lasts
tmiket
0
390
Leveraging LLMs for student feedback in introductory data science courses - posit::conf(2025)
minecr
1
310
Building the Perfect Custom Keyboard
takai
2
810
Unsuck your backbone
ammeep
672
58k
What’s in a name? Adding method to the madness
productmarketing
PRO
24
4.1k
Building Better People: How to give real-time feedback that sticks.
wjessup
370
20k
Git: the NoSQL Database
bkeepers
PRO
432
67k
Self-Hosted WebAssembly Runtime for Runtime-Neutral Checkpoint/Restore in Edge–Cloud Continuum
chikuwait
0
650
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