Wire the Kokoro model family into the sherpa-onnx backend (which only
supported VITS/Piper before) and add gallery voices for Italian, English,
Spanish, French and German plus a multilingual Kokoro model.
- csrc/shim.{c,h}: kokoro_* config setters (model/voices/tokens/data_dir/
dict_dir/lexicon/lang/length_scale) mirroring the VITS path, with the
matching frees in tts_config_free.
- backend.go: loadTTS now detects a Kokoro model (a voices.bin beside the
ONNX) and routes to configureKokoroTTS, otherwise configureVitsTTS.
Kokoro picks up espeak-ng-data, the jieba dict and the per-language
lexicons (only one English variant, to avoid tens of thousands of
duplicate-word warnings at load); the language= option hints the lang.
- backend_test.go: functional test for isKokoroModel detection.
- gallery: 5 Piper VITS voices (it_IT-paola, en_US-amy, es_ES-davefx,
fr_FR-siwis, de_DE-thorsten) + kokoro-multi-lang-v1.0, served through
sherpa-onnx-tts.yaml with native streaming TTS.
Verified by building the backend and synthesizing with a real Piper and
Kokoro model (31/31 specs pass, including real-model synth smokes).
Assisted-by: Claude:claude-opus-4-8 gofmt golangci-lint go-test
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Co-authored-by: Ettore Di Giacinto <mudler@localai.io>
203410871b