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ledgrab/android/app/src/main/res/drawable/ic_launcher.xml
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alexei.dolgolyov 8574424fb7
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feat: Android TV app embedding Python server via Chaquopy
Adds a native Android TV application that runs the full LedGrab Python
server in-process via Chaquopy. Captures the TV box screen using the
MediaProjection API and exposes the existing web UI on the device's
local network — users configure via phone/tablet browser.

Android (new /android/ module):
- Kotlin shell: MainActivity, CaptureService (foreground service),
  ScreenCapture (MediaProjection + ImageReader), PythonBridge (Chaquopy).
- Polished Leanback-themed UI with QR code for easy web UI access.
- AGP 8.9 + Chaquopy 17 + Gradle 8.11 (avoids the AGP 8.7 thread-lock bug).
- Pre-built pydantic-core wheels for arm64-v8a, x86_64, x86 cross-compiled
  with maturin + Android NDK, linked against Chaquopy's libpython3.11.so.

Python server platform guards:
- New utils/platform.py with is_android()/is_windows()/is_linux() helpers.
- Guard every top-level import of desktop-only packages (mss, psutil,
  sounddevice, pyserial, PyAudioWPatch, etc.) with try/except ImportError.
- Android-incompatible calls gated with None-checks so the server runs on
  reduced capabilities on Android (no CPU/RAM metrics, no mss displays).
- utils/image_codec.py gains a Pillow fallback for resize + JPEG encode
  when cv2 is unavailable; all internal cv2.resize callers migrated.
- New android_entry.py start_server/stop_server invoked from Kotlin.
- get_displays API falls back to best available engine when mss fails.

New capture engines:
- MediaProjectionEngine: receives RGBA frames pushed from Kotlin through
  a thread-safe queue; caches last frame for static-screen previews.
- ScrcpyClientEngine: optional H.264 streaming via scrcpy-client library
  (priority 10, overrides the ADB-screencap engine when installed).

Frontend:
- Tab loaders previously required an apiKey; now correctly treat
  "auth disabled" as authenticated (Android has no auth by default).
- Re-trigger the active tab's loader after loadServerInfo resolves
  authRequired, since initTabs runs earlier.
- Add i18n keys for the demo / mediaprojection / scrcpy_client engines.

Docs:
- TODO.md: follow-ups for multi-ABI wheel rebuilds, CI pipeline, USB
  serial LED controllers, root-only capture, perf metrics abstraction.
- CLAUDE.md: Android dependency sync policy (pip --exclude doesn't exist).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-14 03:11:43 +03:00

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XML

<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<!-- Background circle -->
<path
android:fillColor="#0d1117"
android:pathData="M54,54m-50,0a50,50 0,1 1,100 0a50,50 0,1 1,-100 0" />
<!-- Border ring -->
<path
android:strokeColor="#2264ffda"
android:strokeWidth="1.5"
android:fillColor="#00000000"
android:pathData="M54,54m-48,0a48,48 0,1 1,96 0a48,48 0,1 1,-96 0" />
<!-- TV body -->
<path
android:fillColor="#1c2333"
android:pathData="M26,32 L82,32 Q86,32 86,36 L86,68 Q86,72 82,72 L26,72 Q22,72 22,68 L22,36 Q22,32 26,32 Z" />
<!-- TV screen -->
<path
android:fillColor="#161b22"
android:pathData="M28,35 L80,35 Q82,35 82,37 L82,66 Q82,68 80,68 L28,68 Q26,68 26,66 L26,37 Q26,35 28,35 Z" />
<!-- LED glow - top (teal) -->
<path
android:fillColor="#64ffda"
android:fillAlpha="0.7"
android:pathData="M30,28 L78,28 L78,30 L30,30 Z" />
<!-- LED glow - left (purple) -->
<path
android:fillColor="#bb86fc"
android:fillAlpha="0.6"
android:pathData="M18,34 L20,34 L20,70 L18,70 Z" />
<!-- LED glow - right (red) -->
<path
android:fillColor="#ff6b6b"
android:fillAlpha="0.6"
android:pathData="M88,34 L90,34 L90,70 L88,70 Z" />
<!-- LED glow - bottom (yellow) -->
<path
android:fillColor="#ffd93d"
android:fillAlpha="0.6"
android:pathData="M30,74 L78,74 L78,76 L30,76 Z" />
<!-- TV stand -->
<path
android:fillColor="#1c2333"
android:pathData="M44,72 L44,78 L64,78 L64,72" />
<path
android:fillColor="#1c2333"
android:pathData="M38,78 L70,78 L70,80 L38,80 Z" />
</vector>