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

sherpa-onnx/csrc/offline-source-separation-impl.cc

@@ -0,0 +1,40 @@
+// sherpa-onnx/csrc/offline-source-separation-impl.cc
+//
+// Copyright (c)  2025  Xiaomi Corporation
+
+#include "sherpa-onnx/csrc/offline-source-separation-impl.h"
+
+#include <memory>
+
+#include "sherpa-onnx/csrc/offline-source-separation-spleeter-impl.h"
+
+namespace sherpa_onnx {
+
+std::unique_ptr<OfflineSourceSeparationImpl>
+OfflineSourceSeparationImpl::Create(
+    const OfflineSourceSeparationConfig &config) {
+  // TODO(fangjun): Support other models
+  return std::make_unique<OfflineSourceSeparationSpleeterImpl>(config);
+}
+
+template <typename Manager>
+std::unique_ptr<OfflineSourceSeparationImpl>
+OfflineSourceSeparationImpl::Create(
+    Manager *mgr, const OfflineSourceSeparationConfig &config) {
+  // TODO(fangjun): Support other models
+  return std::make_unique<OfflineSourceSeparationSpleeterImpl>(mgr, config);
+}
+
+#if __ANDROID_API__ >= 9
+template std::unique_ptr<OfflineSourceSeparationImpl>
+OfflineSourceSeparationImpl::Create(
+    AAssetManager *mgr, const OfflineSourceSeparationConfig &config);
+#endif
+
+#if __OHOS__
+template std::unique_ptr<OfflineSourceSeparationImpl>
+OfflineSourceSeparationImpl::Create(
+    NativeResourceManager *mgr, const OfflineSourceSeparationConfig &config);
+#endif
+
+}  // namespace sherpa_onnx