kokoro-tts-zh-en-cxx-api.cc
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// cxx-api-examples/kokoro-tts-zh-en-cxx-api.c
//
// Copyright (c) 2025 Xiaomi Corporation
// This file shows how to use sherpa-onnx CXX API
// for Chinese + English TTS with Kokoro.
//
// clang-format off
/*
Usage
wget https://github.com/k2-fsa/sherpa-onnx/releases/download/tts-models/kokoro-multi-lang-v1_0.tar.bz2
tar xf kokoro-multi-lang-v1_0.tar.bz2
rm kokoro-multi-lang-v1_0.tar.bz2
./kokoro-tts-zh-en-cxx-api
*/
// clang-format on
#include <string>
#include "sherpa-onnx/c-api/cxx-api.h"
static int32_t ProgressCallback(const float *samples, int32_t num_samples,
float progress, void *arg) {
fprintf(stderr, "Progress: %.3f%%\n", progress * 100);
// return 1 to continue generating
// return 0 to stop generating
return 1;
}
int32_t main(int32_t argc, char *argv[]) {
using namespace sherpa_onnx::cxx; // NOLINT
OfflineTtsConfig config;
config.model.kokoro.model = "./kokoro-multi-lang-v1_0/model.onnx";
config.model.kokoro.voices = "./kokoro-multi-lang-v1_0/voices.bin";
config.model.kokoro.tokens = "./kokoro-multi-lang-v1_0/tokens.txt";
config.model.kokoro.data_dir = "./kokoro-multi-lang-v1_0/espeak-ng-data";
config.model.kokoro.dict_dir = "./kokoro-multi-lang-v1_0/dict";
config.model.kokoro.lexicon =
"./kokoro-multi-lang-v1_0/lexicon-us-en.txt,./kokoro-multi-lang-v1_0/"
"lexicon-zh.txt";
config.model.num_threads = 2;
// If you don't want to see debug messages, please set it to 0
config.model.debug = 1;
std::string filename = "./generated-kokoro-zh-en-cxx.wav";
std::string text =
"中英文语音合成测试。This is generated by next generation Kaldi using "
"Kokoro without Misaki. 你觉得中英文说的如何呢？";
auto tts = OfflineTts::Create(config);
int32_t sid = 50;
float speed = 1.0; // larger -> faster in speech speed
#if 0
// If you don't want to use a callback, then please enable this branch
GeneratedAudio audio = tts.Generate(text, sid, speed);
#else
GeneratedAudio audio = tts.Generate(text, sid, speed, ProgressCallback);
#endif
WriteWave(filename, {audio.samples, audio.sample_rate});
fprintf(stderr, "Input text is: %s\n", text.c_str());
fprintf(stderr, "Speaker ID is is: %d\n", sid);
fprintf(stderr, "Saved to: %s\n", filename.c_str());
return 0;
}