XHR666/dsh-mpkg-wallpaper

中文 | English

A plugin for the DeepSeek Harness Web UI (dsh web) that turns your background into a feature-rich wallpaper system — from parsing Wallpaper Engine .mpkg files, to a full-screen frosted blur suite, to a local wallpaper library with automatic rotation. Nearly every visual detail is adjustable.

Core Features

📦 Multi-source backgrounds (mpkg / video / image / URL)

• Wallpaper Engine .mpkg: parsed directly in the browser (pure client, nothing uploaded to third parties); video wallpapers play their embedded mp4 / video textures; scene wallpapers use the author's preview.gif animated preview; time-of-day switching picks the asset matching the current system time; adjustable options (read-only) for reference in the Wallpaper Engine app
• Direct image/GIF import: local image files (png/jpg/webp/gif) or image URLs (including data:image) as backgrounds — large files auto-stored in browser storage, GIFs loop reliably
• Video files: pick an mp4/webm file directly as a video background

🌊 Full-screen frosted blur suite

• Unified blur: one slider controls the whole screen's haze (0 = fully transparent showing the wallpaper); the chat area and "New chat" button can follow independently
• Dialog / popover / mask blur: three independent toggles + amount sliders (center-screen windows / popup menus / backdrop mask)
• Wallpaper frosted-blur slider, panel opacity, independent title-bar frost amount

🎬 Lens & appearance

• Lens zoom (10–2000%) & pan, sidebar/title-bar wallpaper visibility toggles, light sharpen, Deep diving background box

🚀 Hybrid large-file mode

• On: mpkg is streamed to the DSH host → stored on disk → HTTP Range streaming playback, supports files >600MB with minimal memory
• Off: pure browser mode (600MB cap)

🖼️ Local wallpaper library (Windows + cross-platform)

• Steam discovery: auto-locates the Wallpaper Engine install (including non-default drives via registry + libraryfolders.vdf) and lists video/web wallpapers
• Custom local wallpaper folder: any folder can become a wallpaper library, with a built-in cross-platform folder picker (browse directories step by step)
• Wallpaper switching & rotation: one-click "Next wallpaper", or timed auto-rotation (adjustable interval)

🛡️ Security & coexistence

• Conflict detection: auto-disables itself when other wallpaper/theme plugins are detected
• Coexists with third-party UI plugins (DSH-better-sidebar, dsh-chat-import, dsh-sidebar-qa, …): CSS only targets DSH's native area classes, never overriding injected content
• Security boundary: .exe/application wallpapers fully excluded (anti-malware), custom folders read images/videos only, host routes have path-traversal guards
• Pure-client parsing stays inside the browser sandbox — malicious mpkg cannot reach the host file system

🔄 Update check & one-click hot update

• "Check updates" compares actual code content hashes (README changes do not trigger) — only real functional changes count
• New version found → "Update now": auto-downloads the latest code + version from GitHub, writes it back locally → restart dsh web to take effect

Feature Groups

• Background source: master toggle, hybrid large-file mode, .mpkg file, image URL, local image/GIF, local wallpaper library (Steam discovery + custom folder + folder picker), wallpaper switching & rotation
• Appearance: panel opacity, frosted blur, lens zoom, lens position
• UI blur: unified blur amount, dialog/popover/mask blur toggles + amounts, Deep diving background box, title-bar frost/show (independent frost amount)
• Other: sidebar shows wallpaper, light sharpen, third-party UI radius compat (off by default), update check / one-click hot update, restore defaults

Supported Inputs

• Wallpaper Engine .mpkg (PKGM0014 video / PKGM0018 scene)
• mp4/webm video files (picked directly)
• Image/GIF files (png/jpg/webp/gif, local) and image URLs (including data:image)
• Size limits depend on the mode:
  • Hybrid mode (default on): mpkg is streamed to the DSH host → stored on disk → HTTP Range streaming playback. Files >600MB are supported (only disk space limits), with minimal memory use.
  • Pure browser mode (hybrid off): whole file >600MB is rejected; standalone video >600MB, video texture >250MB, image/GIF >200MB cannot be processed (warns and falls back to the preview); IndexedDB storage quota can also be a limit.
• What you get depends on the wallpaper's content:
  • Video wallpapers (embedded mp4 / standalone mp4): the video plays as the background.
  • Scene wallpapers (Live2D etc.): uses the author's preview.gif (browsers cannot render WE scenes).
  • Blue/green-screen layers: falls back to the preview (the raw chroma-keyed footage would show blue/green).

Limitations

• Scene-type wallpapers (Live2D puppet + shader + particles): the full dynamic scene can only be rendered by the Wallpaper Engine app. The browser uses the author-generated preview.gif, which may look soft full-screen (zoom/sharpen helps).
• Options are read-only: the browser shows pre-rendered assets, so editing options cannot change the picture; apply them in the Wallpaper Engine app instead.
• Very large assets (pure browser mode): standalone videos >600MB, video textures >250MB, images >200MB cannot be handled (warns and falls back to the preview). In hybrid mode large files stream through the host — no such limit.

Screenshots

Dynamic wallpaper fills the whole UI. With the sidebar collapsed, the chat box sits centered with a frosted blur; the sidebar is fully transparent so the wallpaper shows through cleanly.

The effect after adjusting the Panel opacity and Unified blur sliders (as shown): opacity of most areas is adjustable, the sidebar is translucent and the wallpaper shows through faintly behind it.

The settings page. Beyond this screenshot, nearly every appearance aspect is adjustable: unified full-screen blur (chat area / New-chat button can follow independently), dialog / popover / mask blur, lens zoom & pan, sidebar / title-bar wallpaper visibility, title-bar frost amount, sharpen, and time-of-day switching for wallpapers that ship multiple time variants.

The wallpapers in the screenshots are works by Bilibili creator -夜莺Night: author homepage.

Usage

Settings → Wallpaper Engine Background:

Control	Description
Choose .mpkg	Uses preview.gif (or time-matched asset) as the dynamic background; you can also pick an mp4/webm file directly
Hybrid large-file mode	On: supports >600MB (streamed to host); Off: pure browser mode (600MB cap)
Adjustable options	The wallpaper's own parameters and current values (read-only, for reference in the Wallpaper Engine app)
Image URL / local image	Plain images or GIFs
Panel opacity	50–100%
Frosted blur	How blurred the wallpaper itself is, 0–40px (0 = sharp)
Unified blur	One slider controls the whole screen's haze; the chat area / New-chat button can follow independently
Dialog / popover / mask blur	Three independent toggles + amount sliders
Lens zoom / position	Zoom (10–2000%) and pan the background; zoom out to see components at the picture edges
Sidebar / title-bar wallpaper	Toggles; off = solid opaque color for that area; title-bar frost amount adjustable independently
Local wallpaper library	Steam discovery (Windows) + custom folder (any folder + folder picker)
Wallpaper switching & rotation	"Next wallpaper" one-click switch; timed auto-rotation (adjustable interval)
Light sharpen	Improves low-res look; turn off if GIFs stutter

Install

Option 1: dsh plugin add (recommended)

dsh plugin --profile web add dsh-mpkg-wallpaper
# restart dsh web, then hard-refresh the browser (Ctrl+F5)

Option 2: Manual copy

Drop the plugin folder (or extract the GitHub zip) into $DSH_HOME/profiles/node_modules/dsh-mpkg-wallpaper/ and register a line in the profile's cordis.patch.yml:

- insert:
    - id: dsh-mpkg-wallpaper
      name: dsh-mpkg-wallpaper

Option 3: Git clone

git clone https://github.com/XHR666/dsh-mpkg-wallpaper.git $DSH_HOME/profiles/node_modules/dsh-mpkg-wallpaper

Uninstall: dsh plugin --profile web remove dsh-mpkg-wallpaper (or remove the mount line + delete the plugin directory + restart).

Official Docs

Wallpaper Engine's official help site (help.wallpaperengine.io) has a mobile section (pairing with Windows, etc.); the mpkg container format is proprietary and undocumented.

Reporting Bugs

When reporting a bug, please attach:

• The original .mpkg source file (required to reproduce the issue),
• Browser console output (F12 → Console), if any,
• Your DSH version and platform (Windows / Linux / mobile).

Security

• No external network requests: the plugin never contacts external networks; the only network behavior is: ① the browser loading an image URL the user typed manually; ② in hybrid mode, HTTP communication with the local DSH host (127.0.0.1) for uploading mpkg / streaming wallpapers — never through any third party
• No sensitive content: no paths, keys, tokens or personal info in the source
• No third-party closed source: depends only on DSH's bundled react and the official slots/locale interfaces
• Reference projects (all open source): dsh-bg-image (MIT, template), unmpkg (GPL-3.0, mpkg binary format only), repkg (GPL, .tex format research), astc-encoder (Apache-2.0, local decode experiments)
• Data boundary: all parsing happens locally in the browser; localStorage only stores background data URLs and option edits

File Layout

dsh-mpkg-wallpaper/
├── package.json      # dsh.bundle + dsh.client manifests
├── cordis.patch.yml  # plugin install declaration (for dsh plugin add)
├── lib/
│   ├── index.js      # host side: large-file upload/streaming + Steam discovery + custom folders
│   └── client.js     # browser side: mpkg parser + settings page + background DOM + blur system + wallpaper library
├── tools/            # mpkg/tex/mdl reverse-engineering tools (for developers)
├── README.md         # 中文说明
└── README.en.md      # this file (English)

Notes for Distribution

Portability

• No absolute paths, no local ports, no environment-specific config; only DSH's bundled react and the official slots/locale interfaces
• Custom nav icon: replace the NAV_ICON constant in lib/client.js (default: a hand-drawn "landscape" SVG, no trademark) with your own icon (20×20, SVG data URL or base64 PNG recommended)

Reverse-Engineering Tools (tools/)

Tool	Purpose
unmpkg.py	mpkg container parser/extractor (PKGM0014/0018)
tex2png.py	TEXV0005 texture decoder (DXT5/R8, etc.)
mdl_explorer.py	.mdl structure explorer (block tags/meshes/float sections)
xref.py	wallpaper64.exe string xref + disassembly (capstone)
MDL-格式分析笔记.md	.mdl format reverse-engineering notes (container/mesh solved, skeleton = JSON, animation WIP)

Wallpaper Format Research Summary (for other developers)

• mpkg: PKGM0014 (video type: mp4+gif+json) / PKGM0018 (scene type: scene.json+tex+mdl+shader)
• tex: TEXV0005; format 5 = DXT family, format 34 = embedded MP4 video texture (the 4K animation of customize wallpapers lives right in there)
• mdl: MDLV00xx block container; mesh = 8 floats/vertex; MDLS0003/0004 contain JSON skeleton poses; MDLA = animation

Scene Rendering Feasibility

• Full scenes (Live2D puppets) can only be rendered by proprietary runtimes: the Wallpaper Engine app's native libscenejni.so (40 MB, embedded Chromium + proprietary puppet renderer). The open-source we-layerd (Rust) bundles the official renderer but is Linux Wayland only (GNOME / niri / Hyprland / KDE Plasma) — it does not run on Windows or inside Termux proot.
• There is no mature WE scene renderer for browsers (wallgl is a prototype without puppet support; pixeltris/wallpaper-engine-web is gone) — regardless of OS, no browser can render Live2D scenes directly.
• Cross-platform path: render externally into a video, then use the plugin's video background (MP4/WebM stored in IndexedDB, played in a looping <video>):
  • Windows: the official Wallpaper Engine (Steam, native full-scene rendering) or the open-source Lively Wallpaper (video/web/app wallpapers; does not parse WE scene format) → screen-record to mp4
  • Linux desktop: render with we-layerd → screen-record
  • Mobile: screen-record in the Wallpaper Engine app
• The plugin behaves identically on every platform (Windows/Linux/macOS/mobile): preview.gif, embedded video textures and time-of-day switching all work.