Changelog

[v0.2.0]

Breaking Changes

• Rknn is no longer Clone: The Clone implementation has been removed from the Rknn struct to prevent double-free errors. The context is now a unique resource. If you need to share the Rknn instance, consider wrapping it in Arc or Rc.
• Rknn::destroy removed: The destroy method has been removed. Resource cleanup is now handled automatically via the Drop trait when the Rknn instance goes out of scope.
• outputs_get return type changed: This method now returns a safe RknnOutput<'a, T> instead of ManuallyDrop<RknnOutput<T>>.
• outputs_get_raw removed: Because RknnOutput type is safe type and not need copy so remove outputs_get_raw.
• The new RknnOutput ties its lifetime to the Rknn instance to prevent Use-After-Free errors.
• It automatically calls rknn_outputs_release on drop, so manual release is no longer required or possible.
• It provides zero-copy access to the data via a slice (&[T]) instead of a Vec, preventing unsafe memory management.
• Project Structure: The project has been split into a Cargo workspace with two crates:
  • rknn-sys-rs: Low-level FFI bindings.
  • rknn-rs: Safe Rust wrappers (the main entry point).

Added

• rknnmrt feature: Added a new feature flag rknnmrt. When enabled, the library links against librknnmrt instead of librknnrt.
• Safe rknn_init: rknn_init now returns a Result instead of panicking if the model path contains invalid characters (e.g., null bytes).

Changed

• Error Handling: The Error struct and rkerr! macro have been moved to a dedicated rknn::error module (re-exported in prelude).