# Aospbooks Aosp Internal Book Aosp Internal Book > AOSP Part IV — Native Services & Media - Skill: `tomevault-io/aospbooks-aosp-internal-book-aosp-internal-book` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/aospbooks-aosp-internal-book-aosp-internal-book` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/aospbooks-aosp-internal-book-aosp-internal-book/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/aospbooks-aosp-internal-book-aosp-internal-book --- # AOSP Part IV — Native Services & Media The native daemons that run continuously and own audio, video, sensors, and the graphics composition pipeline. ## Chapters in this Part - `12-native-services.md` — surfaceflinger, audioserver, mediaserver, cameraserver process layout, init triggers, AIDL boundaries, HAL clients - `13-graphics-render-pipeline.md` — SurfaceFlinger, BufferQueue, GraphicBuffer, OpenGL ES / Vulkan / Skia / HWUI, RenderThread, layer composition - `14-animation-system.md` — Choreographer, ValueAnimator/ObjectAnimator, RenderNode animations, dynamic animation, shared-element transitions - `15-audio-system.md` — AudioFlinger, AudioPolicyManager, audio HAL, AAudio/OpenSL ES, spatial audio (Spatializer), routing rules - `16-media-and-camera.md` — MediaCodec, MediaExtractor, NuPlayer, codec2 HAL, camera service, image/video pipeline overview - `17-sensors.md` — SensorService, sensor HAL, batching, wake-up sensors, FIFO and event delivery, sensor fusion ## When to load which chapter - Question is about which native daemons exist or how they boot → `12-native-services.md` - Question mentions SurfaceFlinger, BufferQueue, GraphicBuffer, OpenGL/Vulkan/Skia/HWUI, RenderThread, composition → `13-graphics-render-pipeline.md` - Question mentions Choreographer, animator classes, RenderNode animations, springs/flings → `14-animation-system.md` - Question mentions AudioFlinger, AudioPolicyManager, AAudio, OpenSL ES, Spatializer → `15-audio-system.md` - Question mentions MediaCodec, MediaExtractor, NuPlayer, codec2, camera service → `16-media-and-camera.md` - Question mentions sensors, SensorService, wake-up sensors, batching → `17-sensors.md` --- > Source: [aospbooks/aosp-internal-book](https://github.com/aospbooks/aosp-internal-book) — distributed by [TomeVault](https://tomevault.io).