Add C++ runtime for speech enhancement GTCRN models (#1977)

See also https://github.com/Xiaobin-Rong/gtcrn

sherpa-onnx/csrc/offline-speech-denoiser-impl.cc

@@ -0,0 +1,53 @@
+// sherpa-onnx/csrc/offline-speech-denoiser-impl.cc
+//
+// Copyright (c)  2025  Xiaomi Corporation
+#include "sherpa-onnx/csrc/offline-speech-denoiser-impl.h"
+
+#include <memory>
+
+#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
+
+#include "sherpa-onnx/csrc/macros.h"
+#include "sherpa-onnx/csrc/offline-speech-denoiser-gtcrn-impl.h"
+
+namespace sherpa_onnx {
+
+std::unique_ptr<OfflineSpeechDenoiserImpl> OfflineSpeechDenoiserImpl::Create(
+    const OfflineSpeechDenoiserConfig &config) {
+  if (!config.model.gtcrn.model.empty()) {
+    return std::make_unique<OfflineSpeechDenoiserGtcrnImpl>(config);
+  }
+  SHERPA_ONNX_LOGE("Please provide a speech denoising model.");
+  return nullptr;
+}
+
+template <typename Manager>
+std::unique_ptr<OfflineSpeechDenoiserImpl> OfflineSpeechDenoiserImpl::Create(
+    Manager *mgr, const OfflineSpeechDenoiserConfig &config) {
+  if (!config.model.gtcrn.model.empty()) {
+    return std::make_unique<OfflineSpeechDenoiserGtcrnImpl>(mgr, config);
+  }
+  SHERPA_ONNX_LOGE("Please provide a speech denoising model.");
+  return nullptr;
+}
+
+#if __ANDROID_API__ >= 9
+template std::unique_ptr<OfflineSpeechDenoiserImpl>
+OfflineSpeechDenoiserImpl::Create(AAssetManager *mgr,
+                                  const OfflineSpeechDenoiserConfig &config);
+#endif
+
+#if __OHOS__
+template std::unique_ptr<OfflineSpeechDenoiserImpl>
+OfflineSpeechDenoiserImpl::Create(NativeResourceManager *mgr,
+                                  const OfflineSpeechDenoiserConfig &config);
+#endif
+
+}  // namespace sherpa_onnx