What is CVBuffer/ROPPONGI.swift

Transcript

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12. $7#V⒎FSͷਖ਼ମ w $7*NBHF#V⒎FS public typealias CVImageBuffer = CVBuffer w $71JYFM#V⒎FS

    public typealias CVPixelBuffer = CVImageBuffer w $70QFO(-&45FYUVSF public typealias CVOpenGLESTexture = CVImageBuffer 

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17. ݕূ var pb: CVPixelBuffer? = nil CVPixelBufferCreate(kCFAllocatorDefault, 128, 128, kCVPixelFormatType_32BGRA,

    nil, &pb) CVImageBufferGetDisplaySize(pb!) // -> (128.0, 128.0) 

18. ಈըΛѻ͏ػձͷ૿Ճ w ಈը഑৴ΞϓϦ΍IFWDͷొ৔ɺ$PSF7JEFPʹ৮ΕΔػ ձ͕૿͍͑ͯΔ w σʔλ΍ϝσΟΞΛѻ͏#V⒎FSܥΫϥεͷར༻ස౓͸ ૿Ճ w ΈΜͳɺؾ࣋ͪͰ$71JYFM#V⒎FSΛ࢖͍ͬͯ·ͤΜ͔ʁ 

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22. ΞυϨεͷϩοΫ $7#V⒎FSͷσʔλόοϑΝʹ$16͔ΒΞΫηε͢Δ ৔߹͸ΞυϨεΛϩοΫ͢Δඞཁ͕͋Δ CVPixelBufferLockBaseAddress(pb, .readOnly) defer { CVPixelBufferUnlockBaseAddress(pb, .readOnly) }

    

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24. Ұ൪؆୯ͳํ๏ $71JYFM#V⒎FS
    
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    6**NBHF CIImage(cvPixelBuffer: CVPixelBuffer) UIImage(ciImage: ciImage) 

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26. 0QFO(-&4Ͱදࣔ͢Δ CVOpenGLESTextureCacheܦ༝Ͱ $71JYFM#V⒎FS
    
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