Add Python API (#31)

sherpa-onnx/python/csrc/online-recognizer.cc

@@ -0,0 +1,49 @@
+// sherpa-onnx/python/csrc/online-recongizer.cc
+//
+// Copyright (c)  2023  Xiaomi Corporation
+
+#include "sherpa-onnx/python/csrc/online-recognizer.h"
+
+#include <string>
+#include <vector>
+
+#include "sherpa-onnx/csrc/online-recognizer.h"
+
+namespace sherpa_onnx {
+
+static void PybindOnlineRecognizerResult(py::module *m) {
+  using PyClass = OnlineRecognizerResult;
+  py::class_<PyClass>(*m, "OnlineRecognizerResult")
+      .def_property_readonly("text", [](PyClass &self) { return self.text; });
+}
+
+static void PybindOnlineRecognizerConfig(py::module *m) {
+  using PyClass = OnlineRecognizerConfig;
+  py::class_<PyClass>(*m, "OnlineRecognizerConfig")
+      .def(py::init<const FeatureExtractorConfig &,
+                    const OnlineTransducerModelConfig &, const std::string &>(),
+           py::arg("feat_config"), py::arg("model_config"), py::arg("tokens"))
+      .def_readwrite("feat_config", &PyClass::feat_config)
+      .def_readwrite("model_config", &PyClass::model_config)
+      .def_readwrite("tokens", &PyClass::tokens)
+      .def("__str__", &PyClass::ToString);
+}
+
+void PybindOnlineRecognizer(py::module *m) {
+  PybindOnlineRecognizerResult(m);
+  PybindOnlineRecognizerConfig(m);
+
+  using PyClass = OnlineRecognizer;
+  py::class_<PyClass>(*m, "OnlineRecognizer")
+      .def(py::init<const OnlineRecognizerConfig &>(), py::arg("config"))
+      .def("create_stream", &PyClass::CreateStream)
+      .def("is_ready", &PyClass::IsReady)
+      .def("decode_stream", &PyClass::DecodeStream)
+      .def("decode_streams",
+           [](PyClass &self, std::vector<OnlineStream *> ss) {
+             self.DecodeStreams(ss.data(), ss.size());
+           })
+      .def("get_result", &PyClass::GetResult);
+}
+
+}  // namespace sherpa_onnx