Class JSPrePostProcessor#

Note

Construct via the Class AniraWeb factory in most cases: aniraWeb.JSPrePostProcessor(...) rather than new JSPrePostProcessor(...). The factory threads the WASM instance through for you.

class JSPrePostProcessor(wasmInstance, inferenceConfig)#

TypeScript wrapper for JSPrePostProcessor. Each instance is identified by its C++ pointer and carries its own pre/post implementation that the inference worker dispatches to.

Extends:

  • PrePostProcessor

Arguments:

  • wasmInstance (AniraWasmInstance)

  • inferenceConfig (PossiblePointer<InferenceConfig>)

afterInference(buffers, backend)#

Called on the inference worker immediately after the backend runs. Override in a subclass to capture the model’s output tensors that must feed the next inference (e.g. recurrent state feedback) — see anira::PrePostProcessor::after_inference(). The default forwards to the C++ base (a no-op).

Arguments:

  • buffers (PossiblePointer<VectorBufferF>)

  • backend (number)

beforeInference(buffers, backend)#

Called on the inference worker immediately before the backend runs. Override in a subclass to patch the model’s input tensors with data that must reflect the previous inference (e.g. recurrent state feedback) — see anira::PrePostProcessor::before_inference(). The default forwards to the C++ base (a no-op). Only fires once the subclass is registered on the inference worker via AniraWeb.registerPrePostProcessor().

Arguments:

  • buffers (PossiblePointer<VectorBufferF>)

  • backend (number)

destroy()#

Free the underlying C++ object. See Lifecycle and Cleanup for when to call this.

postProcess(buffers, ringBuffers, backend)#

Called by the inference worker when C++ invokes the JS callback. Override in a subclass to implement custom postprocessing.

Arguments:

  • buffers (PossiblePointer<VectorBufferF>)

  • ringBuffers (PossiblePointer<VectorRingBuffer>)

  • backend (number)

preProcess(ringBuffers, buffers, backend)#

Called by the inference worker when C++ invokes the JS callback. Override in a subclass to implement custom preprocessing.

Arguments:

  • ringBuffers (PossiblePointer<VectorRingBuffer>)

  • buffers (PossiblePointer<VectorBufferF>)

  • backend (number)

setInferenceHooks(enabled)#

Enable or disable the C++ before_inference / after_inference JS callbacks for this processor. When disabled (the default) the C++ hooks short-circuit to the base no-op without crossing into JS, so JSPrePostProcessor instances used only for pre/post-processing pay nothing on the inference thread. The inference worker flips this on when the processor is registered there (AniraWeb.registerPrePostProcessor()).

Arguments:

  • enabled (boolean)