Add Python API for punctuation models. (#762)

@@ -14,7 +14,7 @@ echo "PATH: $PATH"
 which $EXE
 
 log "------------------------------------------------------------"
-log "Download model                             "
+log "Download the punctuation model                             "
 log "------------------------------------------------------------"
 
 curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/punctuation-models/sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2

@@ -8,6 +8,18 @@ log() {
   echo -e "$(date '+%Y-%m-%d %H:%M:%S') (${fname}:${BASH_LINENO[0]}:${FUNCNAME[1]}) $*"
 }
 
+log "test offline punctuation"
+
+curl -SL -O https://github.com/k2-fsa/sherpa-onnx/releases/download/punctuation-models/sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+tar xvf sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+rm sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+repo=sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12
+ls -lh $repo
+
+python3 ./python-api-examples/add-punctuation.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

@@ -91,3 +91,4 @@ sr-data
 *xcworkspace/xcuserdata/*
 
 vits-icefall-*
+sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12

@@ -2,7 +2,7 @@
 
 
 if [ ! -f ./silero_vad.onnx ]; then
-  curl -SL -O https://github.com/snakers4/silero-vad/blob/master/files/silero_vad.onnx
+  curl -SL -O https://github.com/snakers4/silero-vad/raw/master/files/silero_vad.onnx
 fi
 
 if [ ! -f ./sherpa-onnx-paraformer-trilingual-zh-cantonese-en/model.int8.onnx ]; then

@@ -2,7 +2,7 @@
 
 
 if [ ! -f ./silero_vad.onnx ]; then
-  curl -SL -O https://github.com/snakers4/silero-vad/blob/master/files/silero_vad.onnx
+  curl -SL -O https://github.com/snakers4/silero-vad/raw/master/files/silero_vad.onnx
 fi
 
 if [ ! -f ./sherpa-onnx-whisper-tiny.en/tiny.en-encoder.int8.onnx ]; then

@@ -9,7 +9,7 @@ if [ ! -f ./sr-data/enroll/fangjun-sr-1.wav ]; then
 fi
 
 if [ ! -f ./silero_vad.onnx ]; then
-  curl -SL -O https://github.com/snakers4/silero-vad/blob/master/files/silero_vad.onnx
+  curl -SL -O https://github.com/snakers4/silero-vad/raw/master/files/silero_vad.onnx
 fi
 
 go mod tidy

@@ -2,7 +2,7 @@
 
 
 if [ ! -f ./silero_vad.onnx ]; then
-  curl -SL -O https://github.com/snakers4/silero-vad/blob/master/files/silero_vad.onnx
+  curl -SL -O https://github.com/snakers4/silero-vad/raw/master/files/silero_vad.onnx
 fi
 
 if [ ! -f ./sherpa-onnx-whisper-tiny/tiny-encoder.int8.onnx ]; then

@@ -2,7 +2,7 @@
 
 
 if [ ! -f ./silero_vad.onnx ]; then
-  curl -SL -O https://github.com/snakers4/silero-vad/blob/master/files/silero_vad.onnx
+  curl -SL -O https://github.com/snakers4/silero-vad/raw/master/files/silero_vad.onnx
 fi
 
 go mod tidy

+#!/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-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+tar xvf sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+rm sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12.tar.bz2
+"""
+
+from pathlib import Path
+
+import sherpa_onnx
+
+
+def main():
+    model = "./sherpa-onnx-punct-ct-transformer-zh-en-vocab272727-2024-04-12/model.onnx"
+    if not Path(model).is_file():
+        raise ValueError(f"{model} does not exist")
+    config = sherpa_onnx.OfflinePunctuationConfig(
+        model=sherpa_onnx.OfflinePunctuationModelConfig(ct_transformer=model),
+    )
+
+    punct = sherpa_onnx.OfflinePunctuation(config)
+
+    text_list = [
+        "这是一个测试你好吗How are you我很好thank you are you ok谢谢你",
+        "我们都是木头人不会说话不会动",
+        "The African blogosphere is rapidly expanding bringing more voices online in the form of commentaries opinions analyses rants and poetry",
+    ]
+    for text in text_list:
+        text_with_punct = punct.add_punctuation(text)
+        print("----------")
+        print(f"input: {text}")
+        print(f"output: {text_with_punct}")
+
+    print("----------")
+
+
+if __name__ == "__main__":
+    main()

@@ -12,6 +12,7 @@ set(srcs
   offline-model-config.cc
   offline-nemo-enc-dec-ctc-model-config.cc
   offline-paraformer-model-config.cc
+  offline-punctuation.cc
   offline-recognizer.cc
   offline-stream.cc
   offline-tdnn-model-config.cc

+// sherpa-onnx/python/csrc/offline-punctuation.cc
+//
+// Copyright (c)  2024  Xiaomi Corporation
+
+#include "sherpa-onnx/python/csrc/offline-punctuation.h"
+
+#include "sherpa-onnx/csrc/offline-punctuation.h"
+
+namespace sherpa_onnx {
+
+static void PybindOfflinePunctuationModelConfig(py::module *m) {
+  using PyClass = OfflinePunctuationModelConfig;
+  py::class_<PyClass>(*m, "OfflinePunctuationModelConfig")
+      .def(py::init<>())
+      .def(py::init<const std::string &, int32_t, bool, const std::string &>(),
+           py::arg("ct_transformer"), py::arg("num_threads") = 1,
+           py::arg("debug") = false, py::arg("provider") = "cpu")
+      .def_readwrite("ct_transformer", &PyClass::ct_transformer)
+      .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 PybindOfflinePunctuationConfig(py::module *m) {
+  PybindOfflinePunctuationModelConfig(m);
+  using PyClass = OfflinePunctuationConfig;
+
+  py::class_<PyClass>(*m, "OfflinePunctuationConfig")
+      .def(py::init<>())
+      .def(py::init<const OfflinePunctuationModelConfig &>(), py::arg("model"))
+      .def_readwrite("model", &PyClass::model)
+      .def("validate", &PyClass::Validate)
+      .def("__str__", &PyClass::ToString);
+}
+
+void PybindOfflinePunctuation(py::module *m) {
+  PybindOfflinePunctuationConfig(m);
+  using PyClass = OfflinePunctuation;
+
+  py::class_<PyClass>(*m, "OfflinePunctuation")
+      .def(py::init<const OfflinePunctuationConfig &>(), py::arg("config"),
+           py::call_guard<py::gil_scoped_release>())
+      .def("add_punctuation", &PyClass::AddPunctuation, py::arg("text"),
+           py::call_guard<py::gil_scoped_release>());
+}
+
+}  // namespace sherpa_onnx

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

@@ -14,6 +14,7 @@
 #include "sherpa-onnx/python/csrc/offline-ctc-fst-decoder-config.h"
 #include "sherpa-onnx/python/csrc/offline-lm-config.h"
 #include "sherpa-onnx/python/csrc/offline-model-config.h"
+#include "sherpa-onnx/python/csrc/offline-punctuation.h"
 #include "sherpa-onnx/python/csrc/offline-recognizer.h"
 #include "sherpa-onnx/python/csrc/offline-stream.h"
 #include "sherpa-onnx/python/csrc/online-ctc-fst-decoder-config.h"
@@ -40,6 +41,7 @@ PYBIND11_MODULE(_sherpa_onnx, m) {
 
   PybindWaveWriter(&m);
   PybindAudioTagging(&m);
+  PybindOfflinePunctuation(&m);
 
   PybindFeatures(&m);
   PybindOnlineCtcFstDecoderConfig(&m);

@@ -6,6 +6,9 @@ from _sherpa_onnx import (
     AudioTaggingModelConfig,
     CircularBuffer,
     Display,
+    OfflinePunctuation,
+    OfflinePunctuationConfig,
+    OfflinePunctuationModelConfig,
     OfflineStream,
     OfflineTts,
     OfflineTtsConfig,