Add C++ runtime for Matcha-TTS (#1627)

sherpa-onnx/csrc/offline-tts-matcha-model.h

@@ -0,0 +1,39 @@
+// sherpa-onnx/csrc/offline-tts-matcha-model.h
+//
+// Copyright (c)  2024  Xiaomi Corporation
+
+#ifndef SHERPA_ONNX_CSRC_OFFLINE_TTS_MATCHA_MODEL_H_
+#define SHERPA_ONNX_CSRC_OFFLINE_TTS_MATCHA_MODEL_H_
+
+#include <memory>
+#include <string>
+
+#include "onnxruntime_cxx_api.h"  // NOLINT
+#include "sherpa-onnx/csrc/offline-tts-matcha-model-metadata.h"
+#include "sherpa-onnx/csrc/offline-tts-model-config.h"
+
+namespace sherpa_onnx {
+
+class OfflineTtsMatchaModel {
+ public:
+  ~OfflineTtsMatchaModel();
+
+  explicit OfflineTtsMatchaModel(const OfflineTtsModelConfig &config);
+
+  template <typename Manager>
+  OfflineTtsMatchaModel(Manager *mgr, const OfflineTtsModelConfig &config);
+
+  // Return a float32 tensor containing the mel
+  // of shape (batch_size, mel_dim, num_frames)
+  Ort::Value Run(Ort::Value x, int64_t sid = 0, float speed = 1.0) const;
+
+  const OfflineTtsMatchaModelMetaData &GetMetaData() const;
+
+ private:
+  class Impl;
+  std::unique_ptr<Impl> impl_;
+};
+
+}  // namespace sherpa_onnx
+
+#endif  // SHERPA_ONNX_CSRC_OFFLINE_TTS_MATCHA_MODEL_H_