Files
ledgrab/android/app/src/main/AndroidManifest.xml
T
alexei.dolgolyov 4bf3fe65db feat(android): on-device webcam capture via Camera2 (AndroidCameraEngine)
Add on-device webcam capture to the experimental Android-TV build. Desktop
captures webcams via OpenCV (no Chaquopy/Android wheel); this adds a push-based
AndroidCameraEngine that plugs into the same selection path desktop uses
(capture template engine_type="android_camera" + display_index, HAS_OWN_DISPLAYS).

A Kotlin CameraBridge (Camera2) enumerates cameras and opens them on demand —
only while a capture source is active, driven Python->Kotlin via a guarded jclass
singleton (BleBridge pattern) — converts each frame YUV_420_888->RGB, and pushes
RGB bytes into a module-level queue mirroring mediaprojection_engine.py. Cameras
surface as selectable displays like the desktop OpenCV engine; the data-driven
capture-template UI is unchanged. No new Python deps; no new Gradle deps
(Camera2 is in-platform).

Engine: ENGINE_PRIORITY=0 (never auto-selected over MediaProjection=100; explicit
engine_type only). Single-camera ownership is serialized with a lock + ref-count
(same-camera streams attach, different-camera refused, last release stops),
mirroring the desktop CameraEngine guard.

Permission: CAMERA requested at capture-start, gated on FEATURE_CAMERA_ANY so
camera-less TV boxes never prompt; graceful degradation when denied. The service
is promoted with the camera FGS type (+ FOREGROUND_SERVICE_CAMERA) only when
CAMERA is already granted, so backgrounded capture keeps working without risking
a failed startForeground on camera-less boxes (camera can't ride the
MediaProjection token the way audio playback capture does).

Reviewed via multi-agent adversarial pass (13 findings -> 4 fixed: device leak on
session-failure, multi-stream collision, camera FGS type, i18n key; 9 refuted).

Tests: 18 new desktop-CI tests (no device needed); full suite 1883 passed.
Verified: assembleDebug BUILD SUCCESSFUL, ruff clean.

Docs: ANDROID-REVIEW/android-webcam-capture-plan.md (design), updated
android-missing-functionality.md + README feature table + en/ru/zh locales.
2026-06-02 13:36:23 +03:00

174 lines
9.2 KiB
XML

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<!-- BLE scanning and connecting — API ≥31 uses granular permissions;
older releases need BLUETOOTH + ACCESS_FINE_LOCATION for scanning.
neverForLocation avoids the location permission dialog on API 31+. -->
<uses-permission android:name="android.permission.BLUETOOTH"
android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"
android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"
android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.BLUETOOTH_SCAN"
android:usesPermissionFlags="neverForLocation"
tools:targetApi="s" />
<uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
<!-- BLE hardware — required=false so non-BT boxes still install. -->
<uses-feature
android:name="android.hardware.bluetooth_le"
android:required="false" />
<!-- Network access for WLED HTTP/UDP, web UI, MQTT -->
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<!-- Foreground service permissions.
FOREGROUND_SERVICE_MEDIA_PROJECTION: required on API 34+ for the
MediaProjection capture path.
FOREGROUND_SERVICE_SPECIAL_USE: required on API 34+ for the root
screenrecord capture path (it doesn't use MediaProjection).
Both are declared because the service may run in either mode. -->
<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PROJECTION" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
<!-- FOREGROUND_SERVICE_CAMERA (API 34+): required to keep camera access while
the app is backgrounded during on-device webcam capture. The service is
promoted with the `camera` FGS type ONLY when CAMERA is already granted
(see CaptureService.onStartCommand) — unlike audio playback capture (which
rides the MediaProjection token under the mediaProjection type), the camera
has no such coupling and needs its own FGS type to survive backgrounding. -->
<uses-permission android:name="android.permission.FOREGROUND_SERVICE_CAMERA" />
<!-- POST_NOTIFICATIONS for Android 13+ foreground service notification -->
<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
<!-- RECORD_AUDIO for on-device system-playback capture (AudioPlaybackCapture,
API 29+) feeding audio-reactive lighting. Runtime "dangerous" permission,
requested in MainActivity; capture degrades gracefully when denied.
Playback capture runs under the existing mediaProjection FGS type, so no
FOREGROUND_SERVICE_MICROPHONE / microphone FGS type is needed (that would
only be required if the mic-fallback path ran inside the service). -->
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<!-- CAMERA for on-device webcam capture (Camera2). Runtime "dangerous"
permission, requested in MainActivity gated on FEATURE_CAMERA_ANY so
camera-less TV boxes never see the prompt; capture degrades gracefully
when denied. The camera is opened ON DEMAND (only while a camera
capture source is active). To keep capturing after the app is
backgrounded, the service is promoted with the `camera` FGS type
(FOREGROUND_SERVICE_CAMERA above) — but only when CAMERA is already
granted, so a camera-less / not-yet-granted box never risks a failed
service start. -->
<uses-permission android:name="android.permission.CAMERA" />
<!-- Autostart on boot — BootReceiver spawns CaptureService in root
mode so capture resumes without the user touching the remote. -->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<!-- Exempt from Doze/App Standby so the FG service isn't killed
overnight on phones; essentially a no-op on TV boxes. -->
<uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
<!-- Optional wake lock for sustained-performance boxes that aggressively
sleep the CPU with the display off. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />
<!-- Android TV declarations -->
<uses-feature
android:name="android.software.leanback"
android:required="true" />
<uses-feature
android:name="android.hardware.touchscreen"
android:required="false" />
<!-- USB host — for USB-to-TTL adapters driving Adalight/AmbiLED
controllers. required=false so phones without USB host still install. -->
<uses-feature
android:name="android.hardware.usb.host"
android:required="false" />
<!-- Camera hardware — for on-device webcam capture. required=false so
camera-less TV boxes (the common case) still install; the camera
engine simply reports no displays on such devices. camera.any covers
built-in (front/back) and external/USB-UVC cameras the platform
routes through Camera2. -->
<uses-feature
android:name="android.hardware.camera.any"
android:required="false" />
<application
android:name=".LedGrabApp"
android:allowBackup="false"
android:enableOnBackInvokedCallback="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:banner="@drawable/banner_tv"
android:networkSecurityConfig="@xml/network_security_config"
android:theme="@style/Theme.LedGrab">
<!-- TV launcher activity. Boots through the SplashScreen theme so
the (sometimes multi-second) Chaquopy stdlib unpack doesn't
show as a black screen on first launch. -->
<activity
android:name=".MainActivity"
android:exported="true"
android:theme="@style/Theme.LedGrab.Splash">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LEANBACK_LAUNCHER" />
</intent-filter>
</activity>
<!-- Foreground service for screen capture + Python server.
Declares BOTH mediaProjection AND specialUse: only one is
active at a time but Android needs to see the union of
possible types up-front so it doesn't kill the service when
we promote it with a different type at runtime.
FOREGROUND_SERVICE_TYPE_SPECIAL_USE on API 34+ requires the
PROPERTY_SPECIAL_USE_FGS_SUBTYPE rationale below. -->
<service
android:name=".CaptureService"
android:foregroundServiceType="mediaProjection|specialUse|camera"
android:exported="false">
<property
android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE"
android:value="Root-mode screen capture for ambient LED sync. Uses /system/bin/screenrecord on rooted devices to avoid MediaProjection's persistent capture indicator overlay, which is required for the always-on ambient-lighting use case." />
</service>
<!-- Notification capture — a NotificationListenerService bound by
system_server. exported="true" is REQUIRED here (the system binds
it cross-process) and intentionally diverges from CaptureService
(exported="false"); access is gated by the system-held
BIND_NOTIFICATION_LISTENER_SERVICE permission, so no new
<uses-permission> is needed. The user grants access via
Settings > Notification access (opened from MainActivity). -->
<service
android:name=".LedGrabNotificationListener"
android:label="@string/notification_listener_label"
android:exported="true"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
<!-- Autostart — fires on device boot (and package replace).
On rooted devices, launches CaptureService directly so capture
resumes without the user tapping Start. Unrooted devices are
no-op because MediaProjection consent cannot be bypassed. -->
<receiver
android:name=".BootReceiver"
android:exported="true"
android:enabled="true">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.LOCKED_BOOT_COMPLETED" />
<action android:name="android.intent.action.MY_PACKAGE_REPLACED" />
</intent-filter>
</receiver>
</application>
</manifest>