* Create a platform error. * * @param message The error message * @param code The specific error code (defaults to INVALID_

Recursively remove a directory. */

* Resample float audio from one sample rate to another using linear interpolation. * Used for TTS→STT/VAD round-trip tests (22050Hz → 16000Hz). */

Helper to safely copy strings

* Stop audio recording and process transcription (for batch mode) * iOS Reference: stopRecording() in STTViewModel.swift */

* Write a file into the sherpa-onnx Emscripten virtual FS. * Used to stage model files before loading. * * Prefers FS_createDataFile over FS.

* Model Selection Bottom Sheet - Context-Aware Implementation * * Supports context-based filtering (LLM, STT, TTS, VOICE). * UI: Header, Device Sta

* Settings Section wrapper */

* Clear model cache * @returns true if cleared successfully

Portable mkdir wrapper

* Check if key exists */

* Get the base directory for model storage. * * @return The base directory path */

* Get a human-readable name for the turn phase. */

* Get persistent device UUID * This UUID survives app reinstalls (stored in Keychain/Keystore) * Matches Swift: DeviceIdentity.persistentUUID

Add int field to JSON buffer

Load data from storage. Priority: local filesystem > OPFS > memory cache.

* Load a speech-to-text model * @param modelPath Path to the model file * @param modelType Model type identifier * @param configJson Optional

Helper: create a timing with known derived metric values

* Extract the final filename segment from a key. * * For flat keys this returns a sanitized version of the whole key. * For nested keys (`org

* For a key that may contain `/`, traverse (and optionally create) the * intermediate directories and return the parent directory handle. * *

* Sanitize a key for use as a filename. * Keeps alphanumeric, dots, dashes, underscores. Replaces everything else.

* Set assignment status callback. * * Updates the assignment status for a component type. * * @param componentType The component t

* Convert to Map for JSON serialization */

* Download a file from a URL. Used for on-demand fetching of * companion files that aren't in storage yet.

* Simple token estimation (~4 chars per token). * Mirrors Swift's token estimation in LLMCapability. */

* Check if a key exists in secure storage * * Uses native secure storage: * - iOS: Keychain * - Android: Keystore/EncryptedSharedPreferenc

* Get device model name

* Get local path for a model * @param modelId Model identifier * @returns Local file path or empty if not downloaded

* Get a human-readable name for the service type. */

* Get a human-readable name for the error code. */

* Get OS version

Returns true if there are more tokens to consume */

Check if tar command is available. */

* Check if the service is ready for use. */