moq-ffi

UniFFI bindings for Media over QUIC (MoQ).

This crate provides Kotlin, Swift, and Python bindings for the MoQ protocol stack via UniFFI. All exported async methods must be called from an appropriate async context (e.g., a Kotlin coroutine scope or Swift Task/async context).

Building

cargo build --release --package moq-ffi

iOS

cargo build --release --package moq-ffi --target aarch64-apple-ios
cargo build --release --package moq-ffi --target aarch64-apple-ios-sim

Android

cargo ndk -t arm64-v8a build --release --package moq-ffi

Generating bindings

After building, generate language bindings with the included uniffi-bindgen binary.

The library extension depends on your platform: .dylib (macOS/iOS), .so (Linux/Android), .dll (Windows).

cargo run --bin uniffi-bindgen -- generate --library target/release/libmoq_ffi.{dylib,so} --language kotlin --out-dir out/
cargo run --bin uniffi-bindgen -- generate --library target/release/libmoq_ffi.{dylib,so} --language swift --out-dir out/
cargo run --bin uniffi-bindgen -- generate --library target/release/libmoq_ffi.{dylib,so} --language python --out-dir out/

Architecture

moq-ffi (this crate)
├── lib.rs          — Library entry and UniFFI scaffolding
├── ffi.rs          — FFI runtime and Abort helper
├── session.rs      — QUIC session management
├── origin.rs       — Broadcast routing (publish/consume)
├── consumer.rs     — Catalog and track subscription
├── producer.rs     — Broadcast and track publishing
└── error.rs        — Error types