Module engine 

Core TTS engine trait.

Traits

TtsEngine

Trait that every TTS engine must implement.

Functions

estimate_word_boundaries

Estimate word boundaries using word-length-adjusted timing. Mirrors Swift’s WordTimingEstimator.estimate(text:wordsPerMinute:).

estimate_word_boundaries_with_wpm

Estimate word boundaries with configurable words per minute. Matches Swift’s WordTimingEstimator.estimate(text:wordsPerMinute:).

preprocess_speech_markdown

Convert speech markdown to SSML if detected, otherwise return text as-is. Returns (processed_text, is_ssml).

Type Aliases

OnAudioCallback

Callback for streaming audio chunks.

OnBoundaryCallback

Callback for word boundary events.

OnEndCallback

Callback for speech-finished events.

OnErrorCallback

Callback for error events.

OnStartCallback

Callback for speech-started events.