straw/rust
Kayos 341261584a vc=56: subs feed via RSS (5-10x faster) + hide-shorts filter
Strawcore — new channel_feed_rss(channel_url) and subscription_feed
(bulk fan-out 50x via tokio buffer_unordered). Fetches the YouTube
Atom RSS at /feeds/videos.xml?channel_id=UCxxx. Each call is
~50-150ms vs ~500ms for the InnerTube channel_info page-scrape.
Deps added to strawcore wrapper Cargo.toml: reqwest (rustls-tls),
quick-xml, futures. reqwest dedupes against strawcore-core's
existing reqwest dep.

App — SubscriptionFeedViewModel.fetchChannelInto swapped to
channel_feed_rss. Parallelism cranked 12 -> 50 since each fetch is
lightweight now. perChannelMax dropped 30 -> 15 (the RSS upstream
cap is 15). RSS doesn't carry duration / viewCount / avatar — those
backfill on tap-through via the existing streamInfo path. Avatar
opportunistic-refresh dropped from this path (lazy-load on
ChannelScreen open is enough).

Hide-shorts content filter — new util/ContentFilter.kt with
looksLikeShort() (URL /shorts/ match OR title contains
'#shorts'/'#short'). Settings toggle defaults off. Filter applies
at row-emit in SubsPane, SearchScreen, ChannelScreen. Paid +
age-restricted stubs in place for vc=57 when strawcore-core gets
the flags.

Expected refresh time on 50 subs: ~30s sequential -> ~1s parallel-50
RSS.
2026-05-26 10:44:06 -07:00
..
strawcore vc=56: subs feed via RSS (5-10x faster) + hide-shorts filter 2026-05-26 10:44:06 -07:00
Cargo.toml v0.1.0-V (vc=9): U-3 — streamInfo via rustypipe drives VideoDetail+Player 2026-05-24 08:52:43 -07:00
README.md v0.1.0-U (vc=8): Phase U-1 + U-2 — Rust core + rustypipe search 2026-05-24 08:36:50 -07:00

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

crafting-table
├── 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 at /caches/android-sdk/ndk/...)

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.