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aosp-ai-and-devices

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UpdatedJune 23, 2026 at 16:04

AOSP Part XII — AI & Devices. Use when reasoning about on-device ML in AOSP, NNAPI, the AppFunctions framework for assistant integration, the Computer Control flow, CompanionDeviceManager, or virtual devices (virtual displays/inputs/cameras for cross-device experiences), or the NpuManager module for on-device neural accelerators (model-load admission control, the NDK ANpuBuffer surface, the android.hardware.npu HAL). Chapters 51–53.

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name	aosp-ai-and-devices
description	AOSP Part XII — AI & Devices. Use when reasoning about on-device ML in AOSP, NNAPI, the AppFunctions framework for assistant integration, the Computer Control flow, CompanionDeviceManager, or virtual devices (virtual displays/inputs/cameras for cross-device experiences), or the NpuManager module for on-device neural accelerators (model-load admission control, the NDK ANpuBuffer surface, the android.hardware.npu HAL). Chapters 51–53.
metadata	{"author":"utzcoz","version":"2026.06.24","last-updated":"2026-06-24"}

AOSP Part XII — AI & Devices

Newer cross-device and assistant-oriented surfaces: on-device ML wiring and the companion-device / virtual-device frameworks.

Chapters in this Part

51-ai-appfunctions.md — on-device ML in AOSP, NNAPI, AppFunctions framework for assistant integration, Computer Control
52-companion-virtual-device.md — CompanionDeviceManager, virtual displays/inputs/cameras, cross-device experiences
53-npu-manager.md — the NpuManager mainline module for on-device neural accelerators: model-load admission control (budget/turn-taking policies, priorities), the Rust NDK ANpuBuffer/INpuAllocator, the android.hardware.npu HAL, and libwrapfd buffer protection

When to load which chapter

Question mentions NNAPI, AppFunctions, on-device ML, Computer Control → 51-ai-appfunctions.md
Question mentions CompanionDeviceManager, virtual display, virtual camera, virtual input → 52-companion-virtual-device.md
Question mentions NPU, neural accelerator, NpuManager, ANpuBuffer, model-load scheduling → 53-npu-manager.md

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AOSP Internals — Appendices. Use when looking up a key file path (per-chapter table of the most important AOSP source files: build, init, kernel, HAL, framework services, system apps, infrastructure) or the meaning of an AOSP-specific acronym/term (Treble, VINTF, GKI, APEX, AIDL, HIDL, etc.), why Kotlin is absent from the public API, or what changed from Android 16 to Android 17. Reference material — load when you need a concrete path, a definition, or a changelog rather than narrative explanation.

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AOSP Part VIII — Connectivity. Use when reasoning about Networking (ConnectivityService, Wi-Fi framework, netd, DNS resolver, VPN, tethering, NetworkSecurityConfig, VCN, Thread mesh), Telephony (TelephonyManager, PhoneInterfaceManager, RIL/RILD, modem AIDL, IMS framework, emergency calling), Bluetooth (Bluetooth Mainline module, BTA, GATT, A2DP/HFP/AVDTP, LE Audio, pairing, scanning, advertising), NFC (NfcAdapter/NfcService, NCI, tag dispatch, HCE, secure element, reader mode, NFC-F/V), or USB & ADB (USB gadget framework, host-mode USB, MTP/PTP, RNDIS tethering, adb daemon, adb over Wi-Fi). Chapters 35–39.

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AOSP Part XIV — Device Support. Use when reasoning about per-architecture support (ARM 32/64, x86_64, RISC-V, ABI matrix, toolchains), the QEMU-based Android emulator (AVD format, hardware acceleration, guest kernel), DevicePolicyManager (work profiles, fully-managed devices, COPE, enrollment), Android Automotive / TV / Wear (CarService, vehicle HAL, Leanback, TIF, Wear OS specifics), Print Services (PrintManager, IPP, PDF generation), or the Camera2 pipeline (Camera2 API, CaptureRequest/Result, camera HAL3). Chapters 59–62.

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AOSP Part VII — Framework Services. Use when reasoning about PackageManagerService (install/uninstall, APK parsing, permissions, package visibility), ContentProviders (ContentResolver, URI permissions, observers, FileProvider, MediaStore), Notifications (NMS, channels, ranker, posting/delivery, listener services, conversations, bubbles), Power Management (PowerManagerService, wake locks, Doze, App Standby, battery saver, BatteryStats), Background Tasks (JobScheduler, WorkManager, AlarmManager, foreground services, exact alarm policy), Multi-User (UserManagerService, profiles, restrictions, cross-user calls), Account & Sync (AccountManagerService, authenticator, syncadapter, SyncManager), Location (LocationManagerService, GPS/network/fused providers, GNSS HAL, geofencing), or Storage (vold, StorageManagerService, scoped storage, FUSE/sdcardfs, MediaProvider, SAF, FBE, adoptable storage, SQLite, SharedPreferences). Chapters 26–34.

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AOSP Part I — Getting Started. Use when reasoning about the AOSP source tree at a high level, the repo/manifest workflow, the Soong (Android.bp) and Bazel/Kleaf build systems, lunch targets, the m build entry point, or aconfig feature flags (build-time vs. runtime, release configs, ramp/cleanup workflows). Chapters 1–3 (Introduction, Source Code & Build System, Feature Flags).

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name	aosp-ai-and-devices
description	AOSP Part XII — AI & Devices. Use when reasoning about on-device ML in AOSP, NNAPI, the AppFunctions framework for assistant integration, the Computer Control flow, CompanionDeviceManager, or virtual devices (virtual displays/inputs/cameras for cross-device experiences), or the NpuManager module for on-device neural accelerators (model-load admission control, the NDK ANpuBuffer surface, the android.hardware.npu HAL). Chapters 51–53.
metadata	{"author":"utzcoz","version":"2026.06.24","last-updated":"2026-06-24"}

AOSP Part XII — AI & Devices

Newer cross-device and assistant-oriented surfaces: on-device ML wiring and the companion-device / virtual-device frameworks.

Chapters in this Part

51-ai-appfunctions.md — on-device ML in AOSP, NNAPI, AppFunctions framework for assistant integration, Computer Control
52-companion-virtual-device.md — CompanionDeviceManager, virtual displays/inputs/cameras, cross-device experiences
53-npu-manager.md — the NpuManager mainline module for on-device neural accelerators: model-load admission control (budget/turn-taking policies, priorities), the Rust NDK ANpuBuffer/INpuAllocator, the android.hardware.npu HAL, and libwrapfd buffer protection

When to load which chapter

Question mentions NNAPI, AppFunctions, on-device ML, Computer Control → 51-ai-appfunctions.md
Question mentions CompanionDeviceManager, virtual display, virtual camera, virtual input → 52-companion-virtual-device.md
Question mentions NPU, neural accelerator, NpuManager, ANpuBuffer, model-load scheduling → 53-npu-manager.md