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Greg Pomerantz 572409b702 M2: thumbnail engine — turbojpeg DCT-shrink decode, worker pool, disk cache 
- images.rs: libjpeg-turbo 1/2..1/8 shrink decode (48MP @1/8 ~2.3MB peak),
  all 8 EXIF orientations, imageops::resize final fit, PNG via image crate,
  q85 re-encode for the disk cache
- thumb.rs: dispatcher + N=cores/2 workers (2..8), cache
  thumbs/{sha1(path|mtime|size|target)}.jpg (target in key: list 64px and
  grid 500px coexist), atomic rename, generation-based cancellation,
  per-worker sqlite set_thumb, 256-job cadence logs
- lib.rs: AppState OnceLock, 10Hz drain timer (leaked !Send Timer),
  scroll prefetch (50-row margin), do_prefetch gating for scan batches
- main.slint/db.rs: rows carry images; list_entries + set_thumb
- build.sh: NDK CMake toolchain env for turbojpeg-sys (ANDROID_JAR vs
  ANDROID_PLATFORM conflict), nasm on PATH, ADB_SERIAL, debug-aarch64
- HANDOFF: M2 done + acceptance data; HEIC deferred (0 HEIC on device);
  transient first-launch black screen parked as §10.7 (unreproducible)

Verified: 12 unit tests + 5k engine test; Pixel 9 Pro 8577 photos —
cold scan ~5s streaming, warm relaunch instant, thumbnails in every row,
~100% cache hits on relaunch; release aarch64 APK 9.8 MB.
2026-10-27 16:32:12 -04:00
scripts M2: thumbnail engine — turbojpeg DCT-shrink decode, worker pool, disk cache 2026-10-27 16:32:12 -04:00
src M2: thumbnail engine — turbojpeg DCT-shrink decode, worker pool, disk cache 2026-10-27 16:32:12 -04:00
.gitignore M0: Slint gallery scaffold + development hand-off 2026-10-27 12:22:59 -04:00
build.rs M0: Slint gallery scaffold + development hand-off 2026-10-27 12:22:59 -04:00
Cargo.lock M2: thumbnail engine — turbojpeg DCT-shrink decode, worker pool, disk cache 2026-10-27 16:32:12 -04:00
Cargo.toml M2: thumbnail engine — turbojpeg DCT-shrink decode, worker pool, disk cache 2026-10-27 16:32:12 -04:00
HANDOFF.md M2: thumbnail engine — turbojpeg DCT-shrink decode, worker pool, disk cache 2026-10-27 16:32:12 -04:00
LICENSE Initial commit 2026-10-27 12:13:22 -04:00
README.md M1: metadata scan + sqlite DB + placeholder list 2026-10-27 13:28:33 -04:00

README.md

gallery

A high-performance image gallery for Android (primary), Linux and macOS — Rust + Slint 1.18.

Status: M1 (metadata scan + DB) done. See HANDOFF.md — the development hand-off with the full plan: architecture, thumbnail pipeline, milestones M1–M7, Slint gotchas, permission flow, and performance targets. Next: M2 (thumbnail engine).

Build

./scripts/build.sh debug     # debug x86_64 APK + install on emulator
./scripts/build.sh           # release x86_64 (emulator)
./scripts/build.sh aarch64   # release aarch64 (device)
cargo run                    # desktop (Linux needs libfontconfig1 + pkg-config)

Requires: Rust (rustup), cargo-apk2, Android SDK + NDK 27 (see HANDOFF.md §3 for exact paths/env).

License

GPL-3.0 (see LICENSE). Built on Slint, used under the Slint royalty-free license for proprietary apps (see HANDOFF.md §10.4).