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

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

@@ -0,0 +1,74 @@
+// sherpa-onnx/csrc/offline-source-separation.cc
+//
+// Copyright (c)  2025  Xiaomi Corporation
+
+#include "sherpa-onnx/csrc/offline-source-separation.h"
+
+#include <memory>
+
+#include "sherpa-onnx/csrc/offline-source-separation-impl.h"
+
+#if __ANDROID_API__ >= 9
+#include "android/asset_manager.h"
+#include "android/asset_manager_jni.h"
+#endif
+
+#if __OHOS__
+#include "rawfile/raw_file_manager.h"
+#endif
+
+namespace sherpa_onnx {
+
+void OfflineSourceSeparationConfig::Register(ParseOptions *po) {
+  model.Register(po);
+}
+
+bool OfflineSourceSeparationConfig::Validate() const {
+  return model.Validate();
+}
+
+std::string OfflineSourceSeparationConfig::ToString() const {
+  std::ostringstream os;
+
+  os << "OfflineSourceSeparationConfig(";
+  os << "model=" << model.ToString() << ")";
+
+  return os.str();
+}
+
+template <typename Manager>
+OfflineSourceSeparation::OfflineSourceSeparation(
+    Manager *mgr, const OfflineSourceSeparationConfig &config)
+    : impl_(OfflineSourceSeparationImpl::Create(mgr, config)) {}
+
+OfflineSourceSeparation::OfflineSourceSeparation(
+    const OfflineSourceSeparationConfig &config)
+    : impl_(OfflineSourceSeparationImpl::Create(config)) {}
+
+OfflineSourceSeparation::~OfflineSourceSeparation() = default;
+
+OfflineSourceSeparationOutput OfflineSourceSeparation::Process(
+    const OfflineSourceSeparationInput &input) const {
+  return impl_->Process(input);
+}
+
+int32_t OfflineSourceSeparation::GetOutputSampleRate() const {
+  return impl_->GetOutputSampleRate();
+}
+
+// e.g., it is 2 for 2stems from spleeter
+int32_t OfflineSourceSeparation::GetNumberOfStems() const {
+  return impl_->GetNumberOfStems();
+}
+
+#if __ANDROID_API__ >= 9
+template OfflineSourceSeparation::OfflineSourceSeparation(
+    AAssetManager *mgr, const OfflineSourceSeparationConfig &config);
+#endif
+
+#if __OHOS__
+template OfflineSourceSeparation::OfflineSourceSeparation(
+    NativeResourceManager *mgr, const OfflineSourceSeparationConfig &config);
+#endif
+
+}  // namespace sherpa_onnx