Add C++ and Python API for Kokoro TTS models. (#1715)

sherpa-onnx/csrc/offline-tts-kokoro-model-config.cc

@@ -0,0 +1,96 @@
+// sherpa-onnx/csrc/offline-tts-kokoro-model-config.cc
+//
+// Copyright (c)  2025  Xiaomi Corporation
+
+#include "sherpa-onnx/csrc/offline-tts-kokoro-model-config.h"
+
+#include <vector>
+
+#include "sherpa-onnx/csrc/file-utils.h"
+#include "sherpa-onnx/csrc/macros.h"
+
+namespace sherpa_onnx {
+
+void OfflineTtsKokoroModelConfig::Register(ParseOptions *po) {
+  po->Register("kokoro-model", &model, "Path to Kokoro model");
+  po->Register("kokoro-voices", &voices,
+               "Path to voices.bin for Kokoro models");
+  po->Register("kokoro-tokens", &tokens,
+               "Path to tokens.txt for Kokoro models");
+  po->Register("kokoro-data-dir", &data_dir,
+               "Path to the directory containing dict for espeak-ng.");
+  po->Register("kokoro-length-scale", &length_scale,
+               "Speech speed. Larger->Slower; Smaller->faster.");
+}
+
+bool OfflineTtsKokoroModelConfig::Validate() const {
+  if (model.empty()) {
+    SHERPA_ONNX_LOGE("Please provide --kokoro-model");
+    return false;
+  }
+
+  if (!FileExists(model)) {
+    SHERPA_ONNX_LOGE("--kokoro-model: '%s' does not exist", model.c_str());
+    return false;
+  }
+
+  if (tokens.empty()) {
+    SHERPA_ONNX_LOGE("Please provide --kokoro-tokens");
+    return false;
+  }
+
+  if (!FileExists(tokens)) {
+    SHERPA_ONNX_LOGE("--kokoro-tokens: '%s' does not exist", tokens.c_str());
+    return false;
+  }
+
+  if (data_dir.empty()) {
+    SHERPA_ONNX_LOGE("Please provide --kokoro-data-dir");
+    return false;
+  }
+
+  if (!FileExists(data_dir + "/phontab")) {
+    SHERPA_ONNX_LOGE(
+        "'%s/phontab' does not exist. Please check --kokoro-data-dir",
+        data_dir.c_str());
+    return false;
+  }
+
+  if (!FileExists(data_dir + "/phonindex")) {
+    SHERPA_ONNX_LOGE(
+        "'%s/phonindex' does not exist. Please check --kokoro-data-dir",
+        data_dir.c_str());
+    return false;
+  }
+
+  if (!FileExists(data_dir + "/phondata")) {
+    SHERPA_ONNX_LOGE(
+        "'%s/phondata' does not exist. Please check --kokoro-data-dir",
+        data_dir.c_str());
+    return false;
+  }
+
+  if (!FileExists(data_dir + "/intonations")) {
+    SHERPA_ONNX_LOGE(
+        "'%s/intonations' does not exist. Please check --kokoro-data-dir",
+        data_dir.c_str());
+    return false;
+  }
+
+  return true;
+}
+
+std::string OfflineTtsKokoroModelConfig::ToString() const {
+  std::ostringstream os;
+
+  os << "OfflineTtsKokoroModelConfig(";
+  os << "model=\"" << model << "\", ";
+  os << "voices=\"" << voices << "\", ";
+  os << "tokens=\"" << tokens << "\", ";
+  os << "data_dir=\"" << data_dir << "\", ";
+  os << "length_scale=" << length_scale << ")";
+
+  return os.str();
+}
+
+}  // namespace sherpa_onnx