Add Python binding for online punctuation models (#1312)

@@ -91,6 +91,18 @@ python3 ./python-api-examples/add-punctuation.py
 
 rm -rf $repo
 
+log "test online punctuation"
+
+curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/punctuation-models/sherpa-onnx-online-punct-en-2024-08-06.tar.bz2
+tar xvf sherpa-onnx-online-punct-en-2024-08-06.tar.bz2
+rm sherpa-onnx-online-punct-en-2024-08-06.tar.bz2
+repo=sherpa-onnx-online-punct-en-2024-08-06
+ls -lh $repo
+
+python3 ./python-api-examples/add-punctuation-online.py
+
+rm -rf $repo
+
 log "test audio tagging"
 
 curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/audio-tagging-models/sherpa-onnx-zipformer-audio-tagging-2024-04-09.tar.bz2

@@ -117,3 +117,4 @@ sherpa-onnx-sense-voice-zh-en-ja-ko-yue-2024-07-17
 vits-melo-tts-zh_en
 *.o
 *.ppu
+sherpa-onnx-online-punct-en-2024-08-06

+#!/usr/bin/env python3
+
+"""
+This script shows how to add punctuations to text using sherpa-onnx Python API.
+
+Please download the model from
+https://github.com/k2-fsa/sherpa-onnx/releases/tag/punctuation-models
+
+The following is an example
+
+wget https://github.com/k2-fsa/sherpa-onnx/releases/download/punctuation-models/sherpa-onnx-online-punct-en-2024-08-06.tar.bz2
+tar xvf sherpa-onnx-online-punct-en-2024-08-06.tar.bz2
+rm sherpa-onnx-online-punct-en-2024-08-06.tar.bz2
+"""
+
+from pathlib import Path
+
+import sherpa_onnx
+
+
+def main():
+    model = "./sherpa-onnx-online-punct-en-2024-08-06/model.onnx"
+    bpe = "./sherpa-onnx-online-punct-en-2024-08-06/bpe.vocab"
+    if not Path(model).is_file():
+        raise ValueError(f"{model} does not exist")
+    if not Path(bpe).is_file():
+        raise ValueError(f"{bpe} does not exist")
+
+    model_config = sherpa_onnx.OnlinePunctuationModelConfig(
+        cnn_bilstm=model, bpe_vocab=bpe
+    )
+    config = sherpa_onnx.OnlinePunctuationConfig(model_config=model_config)
+    punct = sherpa_onnx.OnlinePunctuation(config)
+
+    texts = [
+        "how are you i am fine thank you",
+        "The African blogosphere is rapidly expanding bringing more voices online in the form of commentaries opinions analyses rants and poetry",
+    ]
+    for text in texts:
+        text_with_punct = punct.add_punctuation_with_case(text)
+        print("----------")
+        print(f"input : {text}")
+        print(f"output: {text_with_punct}")
+    print("----------")
+
+
+if __name__ == "__main__":
+    main()

@@ -27,6 +27,7 @@ set(srcs
   online-model-config.cc
   online-nemo-ctc-model-config.cc
   online-paraformer-model-config.cc
+  online-punctuation.cc
   online-recognizer.cc
   online-stream.cc
   online-transducer-model-config.cc

+// sherpa-onnx/python/csrc/online-punctuation.cc
+//
+// Copyright (c) 2024
+
+#include "sherpa-onnx/python/csrc/online-punctuation.h"
+
+#include "sherpa-onnx/csrc/online-punctuation.h"
+
+namespace sherpa_onnx {
+
+static void PybindOnlinePunctuationModelConfig(py::module *m) {
+  using PyClass = OnlinePunctuationModelConfig;
+  py::class_<PyClass>(*m, "OnlinePunctuationModelConfig")
+      .def(py::init<>())
+      .def(py::init<const std::string &, const std::string &, int32_t, bool, const std::string &>(),
+           py::arg("cnn_bilstm"), py::arg("bpe_vocab"), py::arg("num_threads") = 1,
+           py::arg("debug") = false, py::arg("provider") = "cpu")
+      .def_readwrite("cnn_bilstm", &PyClass::cnn_bilstm)
+      .def_readwrite("bpe_vocab", &PyClass::bpe_vocab)
+      .def_readwrite("num_threads", &PyClass::num_threads)
+      .def_readwrite("debug", &PyClass::debug)
+      .def_readwrite("provider", &PyClass::provider)
+      .def("validate", &PyClass::Validate)
+      .def("__str__", &PyClass::ToString);
+}
+
+static void PybindOnlinePunctuationConfig(py::module *m) {
+  PybindOnlinePunctuationModelConfig(m);
+  using PyClass = OnlinePunctuationConfig;
+
+  py::class_<PyClass>(*m, "OnlinePunctuationConfig")
+      .def(py::init<>())
+      .def(py::init<const OnlinePunctuationModelConfig &>(), py::arg("model_config"))
+      .def_readwrite("model_config", &PyClass::model)
+      .def("validate", &PyClass::Validate)
+      .def("__str__", &PyClass::ToString);
+}
+
+void PybindOnlinePunctuation(py::module *m) {
+  PybindOnlinePunctuationConfig(m);
+  using PyClass = OnlinePunctuation;
+
+  py::class_<PyClass>(*m, "OnlinePunctuation")
+      .def(py::init<const OnlinePunctuationConfig &>(), py::arg("config"),
+           py::call_guard<py::gil_scoped_release>())
+      .def("add_punctuation_with_case", &PyClass::AddPunctuationWithCase, py::arg("text"),
+           py::call_guard<py::gil_scoped_release>());
+}
+
+}  // namespace sherpa_onnx

+// sherpa-onnx/python/csrc/online-punctuation.h
+//
+// Copyright (c) 2024
+
+#ifndef SHERPA_ONNX_PYTHON_CSRC_ONLINE_PUNCTUATION_H_
+#define SHERPA_ONNX_PYTHON_CSRC_ONLINE_PUNCTUATION_H_
+
+#include "sherpa-onnx/python/csrc/sherpa-onnx.h"
+
+namespace sherpa_onnx {
+
+void PybindOnlinePunctuation(py::module *m);
+
+}
+
+#endif  // SHERPA_ONNX_PYTHON_CSRC_ONLINE_PUNCTUATION_H_

@@ -20,6 +20,7 @@
 #include "sherpa-onnx/python/csrc/online-ctc-fst-decoder-config.h"
 #include "sherpa-onnx/python/csrc/online-lm-config.h"
 #include "sherpa-onnx/python/csrc/online-model-config.h"
+#include "sherpa-onnx/python/csrc/online-punctuation.h"
 #include "sherpa-onnx/python/csrc/online-recognizer.h"
 #include "sherpa-onnx/python/csrc/online-stream.h"
 #include "sherpa-onnx/python/csrc/speaker-embedding-extractor.h"
@@ -42,6 +43,7 @@ PYBIND11_MODULE(_sherpa_onnx, m) {
   PybindWaveWriter(&m);
   PybindAudioTagging(&m);
   PybindOfflinePunctuation(&m);
+  PybindOnlinePunctuation(&m);
 
   PybindFeatures(&m);
   PybindOnlineCtcFstDecoderConfig(&m);

@@ -15,6 +15,9 @@ from _sherpa_onnx import (
     OfflineTtsModelConfig,
     OfflineTtsVitsModelConfig,
     OfflineZipformerAudioTaggingModelConfig,
+    OnlinePunctuation,
+    OnlinePunctuationConfig,
+    OnlinePunctuationModelConfig,
     OnlineStream,
     SileroVadModelConfig,
     SpeakerEmbeddingExtractor,