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youfu 4887981a2d v7: standalone Sing Detect app — full Tauri project tree

Promotes the v6 detection slice into a complete, buildable Tauri 2 app and
renames Stream Studio → Sing Detect (detection-only; video-concat split to its
own project). Proper src/ + src-tauri/ layout, Python sidecar under sidecar/,
app icons, package/Cargo manifests, and dev/build/pack scripts.

Pipeline unchanged in spirit: Rust drives ffmpeg to a 16 kHz mono WAV, the
Python sidecar (inaSpeechSegmenter) emits line-JSON segments, and Rust writes
EDL / markers CSV / CSV / JSON exports. Long ops run on spawn_blocking; cancel
kills the whole py -3.10 process tree.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-06-26 23:12:25 +08:00

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Sing Detect — project context for Claude

This file is auto-loaded each session and travels with the folder, so it stays valid even after the folder is renamed (stream-studio → sing_detect_v2).

What this project is

A Windows desktop app (Tauri 2: Rust backend + TypeScript/WebView2 UI) that detects singing segments in stream recordings and exports editor markers (EDL / markers CSV / CSV / JSON). It is the detection-only spin-off of the former "Stream Studio"; the video-concat feature was split into a separate project (video_concat_v5, since moved out of this folder).

Crate: sing-detect / lib sing_detect_lib. Product: Sing Detect.
Detection runs a Python 3.10 sidecar (sidecar/detect.py, inaSpeechSegmenter + TensorFlow). ffmpeg extracts a 16 kHz WAV first.

Build / run (Windows)

dev.bat — hot-reload dev.
build.bat — MSI installer → src-tauri\target\release\bundle\msi\.
pack.bat — standalone portable folder → dist-portable\SingDetect\ (bundles Sing Detect.exe + ffmpeg/ffprobe + the Python sidecar/).
Requirements on the build machine: Node, Rust (winget install Rustlang.Rustup), VS 2022 C++ tools, ffmpeg at C:\ffmpeg\bin (or on PATH).

⚠️ State left by the rename (READ FIRST if a build fails)

src-tauri\target\ and src-tauri\gen\ were intentionally deleted before the folder rename, because cargo bakes absolute paths into target\ and a build under the old path name fails with os error 3 (系统找不到指定的路径) referencing the old folder. The first build after rename is a full ~5–8 min recompile — this is expected, not an error.
node_modules\ and dist-portable\SingDetect\ were kept (relocatable / self-contained). The existing Sing Detect.exe in dist-portable\ works regardless of the folder name.
Do not keep target\ in a Nextcloud-synced location — it re-introduces the stale-absolute-path build failure across machines.

Detection environment (per-machine)

Needs Python 3.10 (TensorFlow has no 3.12+ support). The app's in-UI "Test detection engine" button checks the env and auto-installs the ML packages + downloads the model on first run (or run sidecar\setup_sidecar.bat).
Setup uses default international PyPI and does no proxy manipulation — pip and the model download just inherit the system network settings, so a VPN/proxy (e.g. Clash) routes them normally. Keep pip reasonably current: the very old pip 21.2.3 bundled with Python 3.10.0 crashes through an HTTP proxy (check_hostname requires server_hostname); installing Python 3.10.11 (ships a modern pip) or running py -3.10 -m pip install -U pip once avoids it.

Notable backend behavior

Long ops (detect_songs, setup_detection, export_segments) run via spawn_blocking so the window stays responsive (not "未响应").
cancel kills the whole process tree (taskkill /F /T), because py -3.10 spawns python.exe as a child — killing only py left it running.

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