The decoder can load from a path; nothing yet put a file at one. Four packaging routes, and one lookup that finds the result. ## Not `include_bytes!`, unlike the instance model The instance model is 11 MB and compiled in, which was the right call for it: Android hands the app no filesystem path (ARCH §6.9) and 11 MB is tolerable. The scene model is 24 MB, and 35 MB of constants in the binary is paid by every install whether or not the tab is ever opened. So it follows `models/face/` instead — carried as an APK asset, unpacked once at first launch into the shared directory a desktop install already uses, after which every lookup finds it where it finds a desktop user's. Assets are stored rather than deflated in the APK, so unpacking is a copy rather than an inflate. `embedded-scene-model` exists for the desktop build with nowhere else to read from, and for tests wanting the real graph. Off by default, which is the asymmetry with `embedded-model` and the reason for a separate feature. ## Three files, all or none `scene_model` insists on the graph, its vocabulary and the category descriptor together, for the reason `face_models` insists on its pair: a graph alone decodes to 150 anonymous channels. Reporting the set missing beats starting and failing at the first inference. ## The two model sets are not the same kind of thing `install_bundled_models` now carries both, and the distinction is worth keeping in view. Face weights are absent from the repository *by design* — the InsightFace grant is research-only (docs/faces.md §2) — so a build carrying none is ordinary. The scene model is committed, so a build carrying none means a checkout without `git lfs pull`. Neither is fatal. A photo editor that refuses to start over a missing grading feature is worse than one that starts without it, so both report themselves unavailable exactly as face indexing already did. The LFS-pointer guards apply to the `.onnx` only. The vocabulary and the descriptor are legitimately a few kilobytes, and a size check that fails on them would be a guard against the wrong thing. `scene_model` is exported ahead of the tab that will consume it so the packaging added here has something to be verified against — assets written where no lookup looks would be a silent mistake for as long as the tab took to arrive. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
DarkRoom
A cross-platform, non-destructive RAW photo editor for Linux and Android.
Status: 0.9.0, and no longer a spike. A library opens, culls, develops and exports on both platforms, across eight tagged releases. What is not built is written down rather than merely absent — see docs/outstanding.md for the requirements that have no implementation and why, and docs/technical-debt.md for the compromises that were chosen.
Documentation
| Document | Contents |
|---|---|
| CONTRIBUTING.md | How to land a first change without reading the rest |
| requirements.md | What the software must do — 179 numbered requirements |
| architecture.md | How it is built — crates, GPU pipeline, data model, sync |
| technical-debt.md | Compromises taken deliberately, each with the condition that retires it |
| outstanding.md | What is not built, and whether that is a decision or a gap |
| code-health.md | What a contribution costs, per seam, measured |
| traceability.md | Generated: which requirement is claimed by which file |
| faces.md | Face detection and identity — the models, the licence problem, and what S14 measured |
Building
Desktop:
cargo run -p darkroom-desktop
Android (containerised toolchain, see docker/android):
./docker/android/build.sh cargo ndk -t arm64-v8a build --release
Git LFS is required for the model weights, and the toolchain pins itself. CONTRIBUTING.md has the details and the four commands CI will run against what you send.
Current state
Working. A catalog over a local folder, a Nextcloud account, or a folder a
sync client keeps in virtual-files mode — where a placeholder is treated as the
photograph rather than as a one-byte file. A virtualised library grid with a
capture-time timeline, ratings, labels, keywords, collections and a trash that
survives a crash mid-operation. Card ingest. Face detection and identity, with
the index syncing between devices. A develop pipeline of fifteen declared
operations fused into a single compute dispatch, plus the neighbourhood
operations that cannot be — clarity, texture, capture sharpening, noise
reduction, lens correction, spectral film simulation. Crop, straighten, spot
removal, gradient and subject-segmentation masks, named presets, and a
generated panel that no operation in ui/ is allowed to name. Export to JPEG,
PNG and 8- or 16-bit TIFF with resize and output sharpening.
The zero-copy display path works on desktop. The compute pass writes a texture that Slint composites directly, which is what ARCH §6.1 requires; the readback it forbids costs 96% of frame time at 4K, and
cargo run -p dr-gpu --example bench --features readback
still reproduces that measurement. The one exception is the Android develop view, which reads the frame back through the CPU because zero-copy there needs wgpu's Vulkan swapchain, and that tears a portrait window on a tablet whose panel is mounted landscape. It is debt, not a revision of the rule: the reasoning, the on-device measurements that forced it, and the three separate things any one of which would remove it are in technical-debt.md TD-1.
Not built. Plugins, compare and survey culling, focus peaking, burst grouping, AI denoise, tiled and progressive rendering, and most of the Android platform integration beyond running. The performance targets in §4.1 are unverified rather than unmet — the per-commit benchmark suite §8 requires does not exist, so nothing fails a build on a regression. docs/outstanding.md is the list, with the reasoning.
Licence
GPL-3.0-or-later.