Add C++ runtime for spleeter about source separation (#2242)

sherpa-onnx/csrc/offline-source-separation-spleeter-model.h

@@ -0,0 +1,37 @@
+// sherpa-onnx/csrc/offline-source-separation-spleeter-model.h
+//
+// Copyright (c)  2025  Xiaomi Corporation
+#ifndef SHERPA_ONNX_CSRC_OFFLINE_SOURCE_SEPARATION_SPLEETER_MODEL_H_
+#define SHERPA_ONNX_CSRC_OFFLINE_SOURCE_SEPARATION_SPLEETER_MODEL_H_
+#include <memory>
+
+#include "onnxruntime_cxx_api.h"  // NOLINT
+#include "sherpa-onnx/csrc/offline-source-separation-model-config.h"
+#include "sherpa-onnx/csrc/offline-source-separation-spleeter-model-meta-data.h"
+
+namespace sherpa_onnx {
+
+class OfflineSourceSeparationSpleeterModel {
+ public:
+  ~OfflineSourceSeparationSpleeterModel();
+
+  explicit OfflineSourceSeparationSpleeterModel(
+      const OfflineSourceSeparationModelConfig &config);
+
+  template <typename Manager>
+  OfflineSourceSeparationSpleeterModel(
+      Manager *mgr, const OfflineSourceSeparationModelConfig &config);
+
+  Ort::Value RunVocals(Ort::Value x) const;
+  Ort::Value RunAccompaniment(Ort::Value x) const;
+
+  const OfflineSourceSeparationSpleeterModelMetaData &GetMetaData() const;
+
+ private:
+  class Impl;
+  std::unique_ptr<Impl> impl_;
+};
+
+}  // namespace sherpa_onnx
+
+#endif  // SHERPA_ONNX_CSRC_OFFLINE_SOURCE_SEPARATION_SPLEETER_MODEL_H_