Add online punctuation and casing prediction model for English language (#1224)

sherpa-onnx/csrc/online-punctuation.h

@@ -0,0 +1,58 @@
+// sherpa-onnx/csrc/online-punctuation.h
+//
+// Copyright (c) 2024 Jian You (jianyou@cisco.com, Cisco Systems)
+
+#ifndef SHERPA_ONNX_CSRC_ONLINE_PUNCTUATION_H_
+#define SHERPA_ONNX_CSRC_ONLINE_PUNCTUATION_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#if __ANDROID_API__ >= 9
+#include "android/asset_manager.h"
+#include "android/asset_manager_jni.h"
+#endif
+
+#include "sherpa-onnx/csrc/online-punctuation-model-config.h"
+#include "sherpa-onnx/csrc/parse-options.h"
+
+namespace sherpa_onnx {
+
+struct OnlinePunctuationConfig {
+  OnlinePunctuationModelConfig model;
+
+  OnlinePunctuationConfig() = default;
+
+  explicit OnlinePunctuationConfig(const OnlinePunctuationModelConfig &model)
+      : model(model) {}
+
+  void Register(ParseOptions *po);
+  bool Validate() const;
+
+  std::string ToString() const;
+};
+
+class OnlinePunctuationImpl;
+
+class OnlinePunctuation {
+ public:
+  explicit OnlinePunctuation(const OnlinePunctuationConfig &config);
+
+#if __ANDROID_API__ >= 9
+  OnlinePunctuation(AAssetManager *mgr,
+                     const OnlinePunctuationConfig &config);
+#endif
+
+  ~OnlinePunctuation();
+
+  // Add punctuation and casing to the input text and return it.
+  std::string AddPunctuationWithCase(const std::string &text) const;
+
+ private:
+  std::unique_ptr<OnlinePunctuationImpl> impl_;
+};
+
+}  // namespace sherpa_onnx
+
+#endif  // SHERPA_ONNX_CSRC_ONLINE_PUNCTUATION_H_