History

Cobb addd074f61 All checks were successful build-apk / build-and-publish (push) Successful in 7m17s Details gitleaks / scan (push) Successful in 43s Details vc=84 — rename launcher to 'Straw' + move stream picker into Rust Two changes: 1. Launcher name is now just 'Straw', not 'Straw debug' — past the debug-branding phase. Kept the .debug applicationId suffix (package stays com.sulkta.straw.debug) on purpose so fdroid updates install in place and the in-app auto-updater keeps working; dropping the suffix would change the package id and force a reinstall that wipes everyone's subs/history. That's a separate, deliberate release-track cutover. 2. Stream-selection logic moved out of Kotlin (resolveStreamPlayback) into the Rust strawcore wrapper as resolve_playback(StreamInfo, max_height) -> ResolvedStreams. The app keeps a thin shim that supplies the resolution cap (Settings.maxResolution) and attaches SponsorBlock segments. Byte-for-byte behavior parity with the old Kotlin picker: highest-bitrate stream at/under the cap, lowest-height fallback when nothing fits, first-element-wins on ties (matching Kotlin maxByOrNull/minByOrNull, not Rust's last-on-ties max_by_key), and isNotBlank() handling for the DASH/HLS URLs. First step of moving all backend logic to Rust; the picking lives at the FFI boundary because it depends on an app setting, keeping strawcore-core a pure extractor. Wrapper cargo check + clippy clean (no new warnings); FFI surface adds ResolvedStreams + resolvePlayback, bindings regen at build.		2026-06-21 11:41:50 -07:00
..
strawcore	vc=84 — rename launcher to 'Straw' + move stream picker into Rust	2026-06-21 11:41:50 -07:00
Cargo.lock	straw: infinite-scroll pagination for channel + search	2026-06-19 18:21:42 -07:00
Cargo.toml	Public-flip audit: scrub audit-ticket prefixes + LAN refs + tighten README	2026-05-27 13:29:53 -07:00
README.md	Public-flip audit: scrub audit-ticket prefixes + LAN refs + tighten README	2026-05-27 13:29:53 -07:00

README.md

`rust/` — strawcore: Rust YouTube core for Straw

Phase U- of the Straw build. Goal: replace the Java NewPipeExtractor dependency with a Rust core (rustypipe + tokio + reqwest), exposed to the Kotlin/Compose UI via UniFFI. Compose UI stays in Kotlin — only the YouTube/Innertube fetching layer moves to Rust.

Phases

Phase	What
U-1	Toolchain + UniFFI smoke test (`hello_from_rust`) round-tripping through JNA. No real APIs yet.
U-2	rustypipe search. `SearchViewModel` calls the Rust core.
U-3	rustypipe streamInfo + streams. `VideoDetailViewModel` + `PlayerViewModel` use it.
U-4	rustypipe channel + tabs. `ChannelViewModel` + `SubscriptionFeedViewModel`.
U-5	Rip NewPipeExtractor Java dep. Measure APK + cold-fetch latency before/after.
U-6 (stretch)	SponsorBlock + RYD HTTP through reqwest + tokio in the same lib.

Build chain

Build container (Sulkta uses one; any toolchain matching this layout works)
├── rustup stable (target add: aarch64-linux-android, armv7-linux-androideabi,
│                  x86_64-linux-android, i686-linux-android)
├── cargo-ndk      (cross-compile helper)
├── android-sdk    (ANDROID_HOME, sdkmanager, build-tools, platforms)
└── android-ndk    (ANDROID_NDK_HOME, r27c LTS)

Gradle (strawApp/build.gradle.kts)
├── cargoBuild         Exec task → cargo ndk -t <abi>... -o jniLibs/ build --release
├── uniffiBindgen      Exec task → cargo run --bin uniffi-bindgen ... --library libstrawcore.so
└── source-set wiring  generated Kotlin lands in strawApp/src/main/java/uniffi/strawcore/

Runtime (StrawApp.onCreate)
├── System.loadLibrary("strawcore")
└── uniffi.strawcore.initLogging()

Why UniFFI (and not raw JNI / JNA bindings)

Hand-written JNI: tedious, error-prone, every type change is two files (Kotlin + Rust) that must stay in sync.
Raw JNA: better, but you still hand-write the Kotlin side and worry about string ownership.
UniFFI: write Rust, annotate with #[uniffi::export], get a Kotlin shim generated. Strings, structs, enums, Result types, async functions all cross the boundary transparently. The runtime is JNA under the hood.

When in doubt

cargo check -p strawcore --target aarch64-linux-android — fast iteration.
cargo run --bin uniffi-bindgen -- generate ... — regenerate Kotlin bindings.
adb logcat -s strawcore — Rust log::info!() lands here.
aapt dump badging strawApp/build/outputs/apk/debug/strawApp-debug.apk — inspect what ABIs/native-libs the APK carries.