Android app for peer-to-peer communication and multimedia processing — Bluetooth serial, multi-protocol networking, GPU/media pipelines, a parametric 3D human model, AI chat, market quotes with home widgets, and embedded HTTP / SSH servers. UI layer in Java, heavy lifting in C++ via JNI.
| Category | Technologies |
|---|---|
| Platform | Android API 26+, target / compile 31 |
| Language | Java, C++11 |
| Native | JNI, CMake 3.18.1, NDK 23, OpenGL ES 2.0, OpenSL ES, ARM NEON |
| Network | Bluetooth RFCOMM, TCP, UDP multicast, KCP, HTTP, SSH |
| Market Data | Keyless HTTPS: Tencent, Eastmoney, Sina, Binance, Frankfurter (ECB) |
| Media | AudioRecord/Track, MediaExtractor, YUV↔RGB, PCM↔WAV |
| 3D | Parametric mesh + SDF/SurfaceNets, OBJ/MTL export |
| UI | Material Components, ConstraintLayout, custom views, Day/Night |
| Build | Gradle 7.0.2 (AGP 4.1), JDK 8 / 11 |
app/src/main/
├── java/com/tsymiar/device2device/
│ ├── activity/ # 14: Main (dashboard) / Select / Market / Avatar / Texture /
│ │ # Wave / Graph / Sensor / Bt* / Bugger / MyGit / Thanks
│ ├── service/ # Subscribe, Publish, Http & Ssh server, FileMsg server,
│ │ # Receiver, Window, SaveData, Toast
│ ├── widget/ # Market widgets: list + chart + heatmap
│ ├── market/ # QuoteSource (11 sources), Quote, CapRow, Indicators
│ ├── avatar/ # AnnyModel/Targets/Params, MeshBuilder, HumanMesh, Renderer, PhotoAnalyzer
│ ├── dialog/ # ChatBox (multi-provider AI), FileMsg
│ ├── acceleration/ # Sensor & voice modules
│ ├── entity/ event/ # Data entities, observer bus
│ ├── utils/ view/ # Utilities (Atom, SoundRecord, HttpsRequest …), custom views (KLineView …)
│ └── wrapper/ # JNI bridge: callback, network, view, media, time
└── cpp/ # JniMethods, bitmap, callback, convert, display,
# message, socket, scadup (submodule), test, time, utils
Bluetooth — scanning & pairing, bidirectional RFCOMM serial with directional commands, auto logging, draggable floating receive window.
Networking — TCP / UDP multicast / KCP reliable UDP, Pub/Sub floating dialogs, chunked file transfer with progress, HTTP file server (FS + SAF, sortable listing, in-page viewer), SSH server on port 2222.
Market quotes — MarketActivity + KLineView; keyless feeds from auto (smart pick + fallback), tencent, eastmoney, gold/xau/gc, crude/brent/ng, usd, binance. Code / name / pinyin picker, candles + MA + indicators (MACD, RSI, KDJ), drag-pan, pinch-zoom, crosshair, 15 s refresh.
Home widgets:
| Widget | Size | What it does |
|---|---|---|
| 📈 Quote list | 2×2, resizable | Several watched symbols in one widget; rows land one by one as quotes arrive |
| 📈 Quote chart | 2×2, resizable | Single-symbol trend sparkline; gold symbols also show CNY per gram |
| 📊 Market cap heatmap | 4×4 | Squarified treemap of the top-30 A-shares by market cap — tile area = cap, colour = daily change, tap to open the quote |
Messaging (C++ ↔ Java) — thread-safe queue + MASSAGER enum bridging native events (toast, status, file progress, texture, socket state) to the UI.
Multimedia — EGL/GLES2 and CPU image & video rendering, 16 kHz PCM recording with live waveform, WAV/MP4/OGG/MP3/AAC/AMR playback, built-in STT.
Avatar — fully on-device parametric body. Photo contributes appearance and silhouette; Native engine is SDF + SurfaceNets (procedural), High-res uses Anny (naver/anny, Apache-2.0, MakeHuman/CC0) whose phenotype blendshapes are baked offline into anny.mhb and solved as w = Π c; falls back to Native when missing. Silhouette/color extraction, face shapes, 8 hairstyles, life-size measurements (BMI, girths, inseam), GL preview, OBJ+MTL export.
Rebuild the bundle:
python3 tools/export_anny_targets.py export --anny-dir /path/to/anny --out app/src/main/assets/anny/anny.mhb(--syntheticfor a placeholder,selftestfor byte-exactness).
AI chat — DeepSeek (built-in key fallback), Ollama (local host editable / Cloud), OpenRouter (free models only). Model lists are fetched per provider; selection is remembered.
System — observer event bus, native time sync, global toast, one-tap exit, sensor dashboard with 7.0 m/s² acceleration alert.
Requirements: SDK 31 + Build Tools 30.0.3, NDK 23.0.7599858, CMake 3.18.1, Gradle 7.0.2, JDK 8 / 11.
ABIs: arm64-v8a, armeabi-v7a, x86_64.
git submodule update --init --recursive # app/src/main/cpp/scadup
./build.sh # or: ./build.sh release | clean | cleanall
# BUILD_OFFLINE=1 ./build.shbuild.sh writes local.properties from your environment and copies the APKs to dist/.
CI (Azure Pipelines, macos-latest) checks out the repo plus the tsymiar/scadup submodule and builds all three ABIs.
Permissions: BLUETOOTH* (incl. SCAN/CONNECT/ADVERTISE), location (BT scan), INTERNET,
ACCESS_NETWORK_STATE, ACCESS_WIFI_STATE, CHANGE_WIFI_MULTICAST_STATE, storage & media read,
CAMERA, RECORD_AUDIO, VIBRATE, WAKE_LOCK, FOREGROUND_SERVICE,
SYSTEM_ALERT_WINDOW, REQUEST_IGNORE_BATTERY_OPTIMIZATIONS, ACTIVITY_RECOGNITION,
HIGH_SAMPLING_RATE_SENSORS, READ_PHONE_STATE.
MIT
- Market: 4×4 市值热力图部件（沪深京 A 股市值前30家，面积=市值、颜色=涨跌幅，点击进个股行情）；行情列表部件标签改为「行情列表」并随取数顺序逐行落地；K线默认标的改为紫金矿业（601899），1 分钟周期走分时图（昨收基准线 + 涨跌幅刻度）。
- ChatBox: 多provider（DeepSeek / Ollama local + Cloud / OpenRouter），Ollama 主机可改，模型列表按需拉取（OpenRouter 仅免费）。
- Avatar: Air Bangs；Anny Bust（更高更圆、无缝）；Hip Fullness 校准。
- Avatar: Anny 引擎（内置
anny.mhb、表型缩放），面部与发型、真实网格头部、A-pose 腿部、裸足、量体数据、照片兜底、接缝平滑。 - Sensors: 仪表盘缩放、罗盘/水平仪全屏、分贝卡片。
- Market: K线（11 个数据源）+ 2×2 列表小部件。
- System: SSH 服务端（2222 端口）、HTTP 服务端 + SAF 修复、深色感知 spinner。
- Messaging:
MSG_HINT、Pub/Sub 异步与话题隔离、订阅缓冲修复、端口解析保护、UI 打磨。