Add TTS with VITS (#360)

sherpa-onnx/csrc/offline-tts-vits-model-config.h

@@ -0,0 +1,34 @@
+// sherpa-onnx/csrc/offline-tts-vits-model-config.h
+//
+// Copyright (c)  2023  Xiaomi Corporation
+
+#ifndef SHERPA_ONNX_CSRC_OFFLINE_TTS_VITS_MODEL_CONFIG_H_
+#define SHERPA_ONNX_CSRC_OFFLINE_TTS_VITS_MODEL_CONFIG_H_
+
+#include <string>
+
+#include "sherpa-onnx/csrc/parse-options.h"
+
+namespace sherpa_onnx {
+
+struct OfflineTtsVitsModelConfig {
+  std::string model;
+  std::string lexicon;
+  std::string tokens;
+
+  OfflineTtsVitsModelConfig() = default;
+
+  OfflineTtsVitsModelConfig(const std::string &model,
+                            const std::string &lexicon,
+                            const std::string &tokens)
+      : model(model), lexicon(lexicon), tokens(tokens) {}
+
+  void Register(ParseOptions *po);
+  bool Validate() const;
+
+  std::string ToString() const;
+};
+
+}  // namespace sherpa_onnx
+
+#endif  // SHERPA_ONNX_CSRC_OFFLINE_TTS_VITS_MODEL_CONFIG_H_