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115 lines
4.9 KiB
C++
115 lines
4.9 KiB
C++
// kaldifeat/python/csrc/feature-window.cc
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//
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// Copyright (c) 2021 Xiaomi Corporation (authors: Fangjun Kuang)
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#include "kaldifeat/python/csrc/feature-window.h"
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#include <memory>
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#include <string>
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#include "kaldifeat/csrc/feature-window.h"
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#include "kaldifeat/python/csrc/utils.h"
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namespace kaldifeat {
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static void PybindFrameExtractionOptions(py::module &m) {
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using PyClass = FrameExtractionOptions;
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py::class_<PyClass>(m, "FrameExtractionOptions")
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.def(
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py::init([](float samp_freq = 16000, float frame_shift_ms = 10.0f,
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float frame_length_ms = 25.0f, float dither = 1.0f,
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float preemph_coeff = 0.97f, bool remove_dc_offset = true,
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const std::string &window_type = "povey",
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bool round_to_power_of_two = true,
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float blackman_coeff = 0.42f, bool snip_edges = true,
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int32_t max_feature_vectors =
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-1) -> std::unique_ptr<FrameExtractionOptions> {
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auto opts = std::make_unique<FrameExtractionOptions>();
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opts->samp_freq = samp_freq;
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opts->frame_shift_ms = frame_shift_ms;
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opts->frame_length_ms = frame_length_ms;
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opts->dither = dither;
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opts->preemph_coeff = preemph_coeff;
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opts->remove_dc_offset = remove_dc_offset;
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opts->window_type = window_type;
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opts->round_to_power_of_two = round_to_power_of_two;
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opts->blackman_coeff = blackman_coeff;
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opts->snip_edges = snip_edges;
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opts->max_feature_vectors = max_feature_vectors;
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return opts;
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}),
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py::arg("samp_freq") = 16000, py::arg("frame_shift_ms") = 10.0f,
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py::arg("frame_length_ms") = 25.0f, py::arg("dither") = 1.0f,
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py::arg("preemph_coeff") = 0.97f, py::arg("remove_dc_offset") = true,
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py::arg("window_type") = "povey",
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py::arg("round_to_power_of_two") = true,
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py::arg("blackman_coeff") = 0.42f, py::arg("snip_edges") = true,
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py::arg("max_feature_vectors") = -1)
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.def_readwrite("samp_freq", &PyClass::samp_freq)
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.def_readwrite("frame_shift_ms", &PyClass::frame_shift_ms)
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.def_readwrite("frame_length_ms", &PyClass::frame_length_ms)
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.def_readwrite("dither", &PyClass::dither)
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.def_readwrite("preemph_coeff", &PyClass::preemph_coeff)
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.def_readwrite("remove_dc_offset", &PyClass::remove_dc_offset)
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.def_readwrite("window_type", &PyClass::window_type)
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.def_readwrite("round_to_power_of_two", &PyClass::round_to_power_of_two)
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.def_readwrite("blackman_coeff", &PyClass::blackman_coeff)
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.def_readwrite("snip_edges", &PyClass::snip_edges)
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.def_readwrite("max_feature_vectors", &PyClass::max_feature_vectors)
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.def("as_dict",
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[](const PyClass &self) -> py::dict { return AsDict(self); })
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.def_static("from_dict",
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[](py::dict dict) -> PyClass {
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return FrameExtractionOptionsFromDict(dict);
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})
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#if 0
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.def_readwrite("allow_downsample",
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&PyClass::allow_downsample)
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.def_readwrite("allow_upsample", &PyClass::allow_upsample)
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#endif
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.def("__str__",
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[](const PyClass &self) -> std::string {
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std::ostringstream os;
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os << "FrameExtractionOptions(";
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os << "samp_freq=" << self.samp_freq << ", ";
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os << "frame_shift_ms=" << self.frame_shift_ms << ", ";
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os << "frame_length_ms=" << self.frame_length_ms << ", ";
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os << "dither=" << self.dither << ", ";
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os << "preemph_coeff=" << self.preemph_coeff << ", ";
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os << "remove_dc_offset="
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<< (self.remove_dc_offset ? "True" : "False") << ", ";
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os << "window_type=" << '"' << self.window_type << '"' << ", ";
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os << "round_to_power_of_two="
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<< (self.round_to_power_of_two ? "True" : "False") << ", ";
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os << "blackman_coeff=" << self.blackman_coeff << ", ";
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os << "snip_edges=" << (self.snip_edges ? "True" : "False")
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<< ", ";
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os << "max_feature_vectors=" << self.max_feature_vectors << ")";
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return os.str();
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})
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.def(py::pickle(
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[](const PyClass &self) -> py::dict { return AsDict(self); },
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[](py::dict dict) -> PyClass {
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return FrameExtractionOptionsFromDict(dict);
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}));
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m.def("num_frames", &NumFrames, py::arg("num_samples"), py::arg("opts"),
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py::arg("flush") = true);
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m.def("get_strided", &GetStrided, py::arg("wave"), py::arg("opts"));
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}
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void PybindFeatureWindow(py::module &m) {
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PybindFrameExtractionOptions(m);
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m.def("num_frames", &NumFrames, py::arg("num_samples"), py::arg("opts"),
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py::arg("flush") = true);
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m.def("get_strided", &GetStrided, py::arg("wave"), py::arg("opts"));
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}
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} // namespace kaldifeat
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