/**
|
* Copyright (c) 2022 Xiaomi Corporation (authors: Fangjun Kuang)
|
*
|
* See LICENSE for clarification regarding multiple authors
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
#include "kaldi-native-fbank/python/csrc/online-feature.h"
|
|
#include <string>
|
#include <vector>
|
|
#include "kaldi-native-fbank/csrc/online-feature.h"
|
namespace knf {
|
|
template <typename C>
|
void PybindOnlineFeatureTpl(py::module &m, // NOLINT
|
const std::string &class_name,
|
const std::string &class_help_doc = "") {
|
using PyClass = OnlineGenericBaseFeature<C>;
|
using Options = typename C::Options;
|
py::class_<PyClass>(m, class_name.c_str(), class_help_doc.c_str())
|
.def(py::init<const Options &>(), py::arg("opts"))
|
.def_property_readonly("dim", &PyClass::Dim)
|
.def_property_readonly("frame_shift_in_seconds",
|
&PyClass::FrameShiftInSeconds)
|
.def_property_readonly("num_frames_ready", &PyClass::NumFramesReady)
|
.def("is_last_frame", &PyClass::IsLastFrame, py::arg("frame"))
|
.def(
|
"get_frame",
|
[](py::object obj, int32_t frame) {
|
auto *self = obj.cast<PyClass *>();
|
const float *f = self->GetFrame(frame);
|
return py::array_t<float>({self->Dim()}, // shape
|
{sizeof(float)}, // stride in bytes
|
f, // ptr
|
obj); // it will increase the reference
|
// count of **this** vector
|
},
|
py::arg("frame"))
|
.def(
|
"accept_waveform",
|
[](PyClass &self, float sampling_rate,
|
const std::vector<float> &waveform) {
|
self.AcceptWaveform(sampling_rate, waveform.data(),
|
waveform.size());
|
},
|
py::arg("sampling_rate"), py::arg("waveform"),
|
py::call_guard<py::gil_scoped_release>())
|
.def("input_finished", &PyClass::InputFinished);
|
}
|
|
void PybindOnlineFeature(py::module &m) { // NOLINT
|
PybindOnlineFeatureTpl<FbankComputer>(m, "OnlineFbank");
|
}
|
|
} // namespace knf
|
