Androidだけじゃない、DroidKaigiで広がった私の技術スタック

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1. DroidKaigiで広がった私の技術スタック akkey / @AkkeyLab After DroidKaigi 2026 from ピクシブ

2. akkey • CEO @AkkeyLab, Inc. • Engineer @pixiv Inc. •

   DroidKaigi Staff • try! Swift Tokyo Organizer

3. 私とDroidKaigi

4. 私とDroidKaigi 4年連続セッション応募

5. 私とDroidKaigi Google I/O Extended Tokyo 2025

6. 私とDroidKaigi Galaxy XR求めて韓国へ • 発売日に行ったが買えずに帰国 • 開発は継続

7. DroidKaigi 2026

8. VMSの開発

9. VMSの開発 Video Management System • 収録映像のリアルタイム確認 • 進行状況の確認 • 確認作業を遠隔で実施可能

10. VMSの開発 Appleの技術を活用 • Metal API で描画 • Apple Container で検証

11. VMSの開発

12. VMSの開発 func makeTextures(from pixelBuffer: CVPixelBuffer) -> (luma: MTLTexture, chroma: MTLTexture)?

    { let width = CVPixelBufferGetWidth(pixelBuffer) let height = CVPixelBufferGetHeight(pixelBuffer) var lumaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .r8Unorm, width, height, 0, &lumaTextureRef ) var chromaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .rg8Unorm, width / 2, height / 2, 1, &chromaTextureRef ) guard let lumaTexture = CVMetalTextureGetTexture(lumaTextureRef!), let chromaTexture = CVMetalTextureGetTexture(chromaTextureRef!) else { return nil } return (lumaTexture, chromaTexture) }

13. VMSの開発 func makeTextures(from pixelBuffer: CVPixelBuffer) -> (luma: MTLTexture, chroma: MTLTexture)?

    { let width = CVPixelBufferGetWidth(pixelBuffer) let height = CVPixelBufferGetHeight(pixelBuffer) var lumaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .r8Unorm, width, height, 0, &lumaTextureRef ) var chromaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .rg8Unorm, width / 2, height / 2, 1, &chromaTextureRef ) guard let lumaTexture = CVMetalTextureGetTexture(lumaTextureRef!), let chromaTexture = CVMetalTextureGetTexture(chromaTextureRef!) else { return nil } return (lumaTexture, chromaTexture) }

14. VMSの開発 func makeTextures(from pixelBuffer: CVPixelBuffer) -> (luma: MTLTexture, chroma: MTLTexture)?

    { let width = CVPixelBufferGetWidth(pixelBuffer) let height = CVPixelBufferGetHeight(pixelBuffer) var lumaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .r8Unorm, width, height, 0, &lumaTextureRef ) var chromaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .rg8Unorm, width / 2, height / 2, 1, &chromaTextureRef ) guard let lumaTexture = CVMetalTextureGetTexture(lumaTextureRef!), let chromaTexture = CVMetalTextureGetTexture(chromaTextureRef!) else { return nil } return (lumaTexture, chromaTexture) }

15. VMSの開発 func makeTextures(from pixelBuffer: CVPixelBuffer) -> (luma: MTLTexture, chroma: MTLTexture)?

    { let width = CVPixelBufferGetWidth(pixelBuffer) let height = CVPixelBufferGetHeight(pixelBuffer) var lumaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .r8Unorm, width, height, 0, &lumaTextureRef ) var chromaTextureRef: CVMetalTexture? let _ = CVMetalTextureCacheCreateTextureFromImage( kCFAllocatorDefault, textureCache, pixelBuffer, nil, .rg8Unorm, width / 2, height / 2, 1, &chromaTextureRef ) guard let lumaTexture = CVMetalTextureGetTexture(lumaTextureRef!), let chromaTexture = CVMetalTextureGetTexture(chromaTextureRef!) else { return nil } return (lumaTexture, chromaTexture) }

16. VMSの開発 1枚のView

17. VMSの開発

18. VMSの開発 レイアウト変更

19. VMSの開発

20. VMSの開発 テクスチャのキャッシュ

21. VMSの開発

22. VMSの開発 テクスチャの共有

23. VMSの開発

24. 私の技術スタック

25. 私の技術スタック • Android XR • Metal API • Apple Container

26. Thank you !!