GetWallpaperInfoTool
Reports current wallpaper metadata via WallpaperManager: desired minimum dimensions, whether a live wallpaper is active (and its package/service), and whether setting a wallpaper is permitted by device policy.
No permissions required. Read-only.
Output keys: desired_width, desired_height, is_live_wallpaper, live_wallpaper_package, live_wallpaper_service, is_set_wallpaper_allowed.