add kaldi fbank to paddleaudio

audio/CMakeLists.txt

+
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(paddleaudio VERSION 0.1)
+
+# cmake dir
+set(paddleaudio_cmake_dir ${PROJECT_SOURCE_DIR}/cmake)
+
+# Modules
+list(APPEND CMAKE_MODULE_PATH ${paddleaudio_cmake_dir}/external)
+list(APPEND CMAKE_MODULE_PATH ${paddleaudio_cmake_dir})
+include(FetchContent)
+include(ExternalProject)
+
+# fc_patch dir
+set(FETCHCONTENT_QUIET off)
+get_filename_component(fc_patch "fc_patch" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
+set(FETCHCONTENT_BASE_DIR ${fc_patch})
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --std=c++14 -pthread -fPIC -O0 -Wall -g")
+
+# see the thirdparty/kaldi/base/kaldi-types.h
+# compile kaldi without openfst
+add_definitions("-DCOMPILE_WITHOUT_OPENFST")
+
+include(openblas)
+include(pybind)
+#set(fc_patch /paddle/mnt/zhouyang/wks2/PaddleSpeech/paddleaudio/fc_patch)
+#set(OpenBLAS_INSTALL_PREFIX ${fc_patch}/openblas-install)
+#link_directories(${OpenBLAS_INSTALL_PREFIX}/lib)
+#include_directories(${OpenBLAS_INSTALL_PREFIX}/include)
+
+include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/third_party/kaldi)
+#include_directories(${CMAKE_CURRENT_SOURCE_DIR}/third_party/pybind11/include)
+include_directories(/usr/include/python3.7m)
+add_subdirectory(third_party)
+add_subdirectory(kaldi_frontend)

audio/kaldi_frontend/CMakeLists.txt

+
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+include_directories(
+${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+add_library(kaldi_feature
+  kaldi_feature.cc
+  kaldi_feature_wrapper.cc
+)
+target_link_libraries(kaldi_feature kaldi-fbank)
+
+pybind11_add_module(kaldi_featurepy kaldi_feature.cc kaldi_feature_wrapper.cc)
+target_link_libraries(kaldi_featurepy PRIVATE kaldi_feature)
+
+set(bin_name kaldi_feature_main)
+add_executable(${bin_name} ${CMAKE_CURRENT_SOURCE_DIR}/${bin_name}.cc)
+target_include_directories(${bin_name} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
+target_link_libraries(${bin_name} PUBLIC kaldi_feature python3.7m)

audio/kaldi_frontend/feature_common.h

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// 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.
+
+#pragma once
+
+#include "feat/feature-window.h"
+#include <pybind11/pybind11.h>
+#include <pybind11/numpy.h>
+
+namespace paddleaudio {
+
+namespace py = pybind11;
+
+template <class F>
+class StreamingFeatureTpl {
+  public:
+    typedef typename F::Options Options;
+    StreamingFeatureTpl(const Options& opts);
+    bool ComputeFeature(const kaldi::VectorBase<kaldi::BaseFloat>& wav, 
+                        kaldi::Vector<kaldi::BaseFloat>* feats);
+    void Reset() {
+        remained_wav_.Resize(0);
+    }
+
+    int Dim() {
+      return computer_.Dim();
+    }
+
+  private:
+    bool Compute(const kaldi::Vector<kaldi::BaseFloat>& waves, 
+                 kaldi::Vector<kaldi::BaseFloat>* feats);
+    Options opts_;
+    kaldi::FeatureWindowFunction window_function_;
+    kaldi::Vector<kaldi::BaseFloat> remained_wav_;
+    F computer_;
+};
+
+}  // namespace ppspeech
+
+#include "kaldi_frontend/feature_common_inl.h"
+

audio/kaldi_frontend/feature_common_inl.h

+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// 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 "base/kaldi-common.h"
+
+namespace paddleaudio {
+
+template <class F>
+StreamingFeatureTpl<F>::StreamingFeatureTpl(
+    const Options& opts)
+    : opts_(opts), computer_(opts), 
+      window_function_(opts.frame_opts) {
+      //window_function_(computer_.GetFrameOptions()) { the opt set to zero
+}
+
+template <class F>
+bool StreamingFeatureTpl<F>::ComputeFeature(const kaldi::VectorBase<kaldi::BaseFloat>& wav, 
+                                            kaldi::Vector<kaldi::BaseFloat>* feats) {
+    // append remaned waves
+    kaldi::int32 wav_len = wav.Dim();
+    if (wav_len == 0) return false;
+    kaldi::int32 left_len = remained_wav_.Dim();
+    kaldi::Vector<kaldi::BaseFloat> waves(left_len + wav_len);
+    waves.Range(0, left_len).CopyFromVec(remained_wav_);
+    waves.Range(left_len, wav_len).CopyFromVec(wav);
+
+    // cache remaned waves
+    kaldi::FrameExtractionOptions frame_opts = computer_.GetFrameOptions();
+    kaldi::int32 num_frames = kaldi::NumFrames(waves.Dim(), frame_opts);
+    kaldi::int32 frame_shift = frame_opts.WindowShift();
+    kaldi::int32 left_samples = waves.Dim() - frame_shift * num_frames;
+    remained_wav_.Resize(left_samples);
+    remained_wav_.CopyFromVec(
+        waves.Range(frame_shift * num_frames, left_samples));
+
+    // compute speech feature
+    Compute(waves, feats);
+    return true;
+}
+
+// Compute feat
+template <class F>
+bool StreamingFeatureTpl<F>::Compute(
+    const kaldi::Vector<kaldi::BaseFloat>& waves,
+    kaldi::Vector<kaldi::BaseFloat>* feats) {
+    kaldi::BaseFloat vtln_warp = 1.0;
+    const kaldi::FrameExtractionOptions& frame_opts =
+        computer_.GetFrameOptions();
+    kaldi::int32 num_samples = waves.Dim();
+    kaldi::int32 frame_length = frame_opts.WindowSize();
+    kaldi::int32 sample_rate = frame_opts.samp_freq;
+    if (num_samples < frame_length) {
+        return false; 
+    }
+
+    kaldi::int32 num_frames = kaldi::NumFrames(num_samples, frame_opts);
+    feats->Resize(num_frames * Dim());
+
+    kaldi::Vector<kaldi::BaseFloat> window;
+    bool need_raw_log_energy = computer_.NeedRawLogEnergy();
+    for (kaldi::int32 frame = 0; frame < num_frames; frame++) {
+        kaldi::BaseFloat raw_log_energy = 0.0;
+        kaldi::ExtractWindow(0,
+                             waves,
+                             frame,
+                             frame_opts,
+                             window_function_,
+                             &window,
+                             need_raw_log_energy ? &raw_log_energy : NULL);
+
+        kaldi::Vector<kaldi::BaseFloat> this_feature(computer_.Dim(),
+                                                     kaldi::kUndefined);
+        computer_.Compute(raw_log_energy, vtln_warp, &window, &this_feature);
+        kaldi::SubVector<kaldi::BaseFloat> output_row(
+            feats->Data() + frame * Dim(), Dim());
+        output_row.CopyFromVec(this_feature);
+    }
+    return true;
+}
+
+}  // namespace paddleaudio

audio/kaldi_frontend/kaldi_feature.cc

+
+#include <pybind11/pybind11.h>
+#include <pybind11/numpy.h>
+
+#include "kaldi_feature_wrapper.h"
+
+namespace py=pybind11;
+
+bool InitFbank(
+    float samp_freq, // frame opts 
+    float frame_shift_ms,
+    float frame_length_ms,
+    float dither,
+    float preemph_coeff,
+    bool remove_dc_offset,
+    std::string window_type, // e.g. Hamming window
+    bool round_to_power_of_two,
+    float blackman_coeff,
+    bool snip_edges,
+    bool allow_downsample,
+    bool allow_upsample,
+    int max_feature_vectors,
+    int num_bins, // mel opts
+    float low_freq,
+    float high_freq,
+    float vtln_low,
+    float vtln_high,
+    bool debug_mel,
+    bool htk_mode,
+    bool use_energy, // fbank opts
+    float energy_floor,
+    bool raw_energy,
+    bool htk_compat,
+    bool use_log_fbank,
+    bool use_power) {
+    kaldi::FbankOptions opts;
+    opts.frame_opts.samp_freq = samp_freq; // frame opts
+    opts.frame_opts.frame_shift_ms = frame_shift_ms;
+    opts.frame_opts.frame_length_ms = frame_length_ms;
+    opts.frame_opts.dither = dither;
+    opts.frame_opts.preemph_coeff = preemph_coeff;
+    opts.frame_opts.remove_dc_offset = remove_dc_offset;
+    opts.frame_opts.window_type = window_type; 
+    opts.frame_opts.round_to_power_of_two = round_to_power_of_two;
+    opts.frame_opts.blackman_coeff = blackman_coeff;
+    opts.frame_opts.snip_edges = snip_edges;
+    opts.frame_opts.allow_downsample = allow_downsample;
+    opts.frame_opts.allow_upsample = allow_upsample;
+    opts.frame_opts.max_feature_vectors = max_feature_vectors;
+
+    opts.mel_opts.num_bins = num_bins; // mel opts
+    opts.mel_opts.low_freq = low_freq;
+    opts.mel_opts.high_freq = high_freq;
+    opts.mel_opts.vtln_low = vtln_low;
+    opts.mel_opts.vtln_high = vtln_high;
+    opts.mel_opts.debug_mel = debug_mel;
+    opts.mel_opts.htk_mode = htk_mode;
+
+    opts.use_energy = use_energy; // fbank opts
+    opts.energy_floor = energy_floor;
+    opts.raw_energy = raw_energy;
+    opts.htk_compat = htk_compat;
+    opts.use_log_fbank = use_log_fbank;
+    opts.use_power = use_power;
+    paddleaudio::KaldiFeatureWrapper::GetInstance()->InitFbank(opts);
+    return true;
+}
+
+py::array_t<double> ComputeFbankStreaming(const py::array_t<double>& wav) {
+  return paddleaudio::KaldiFeatureWrapper::GetInstance()->ComputeFbank(wav);
+}
+
+py::array_t<double> ComputeFbank(
+    float samp_freq, // frame opts 
+    float frame_shift_ms,
+    float frame_length_ms,
+    float dither,
+    float preemph_coeff,
+    bool remove_dc_offset,
+    std::string window_type, // e.g. Hamming window
+    bool round_to_power_of_two,
+    float blackman_coeff,
+    bool snip_edges,
+    bool allow_downsample,
+    bool allow_upsample,
+    int max_feature_vectors,
+    int num_bins, // mel opts
+    float low_freq,
+    float high_freq,
+    float vtln_low,
+    float vtln_high,
+    bool debug_mel,
+    bool htk_mode,
+    bool use_energy, // fbank opts
+    float energy_floor,
+    bool raw_energy,
+    bool htk_compat,
+    bool use_log_fbank,
+    bool use_power, 
+    const py::array_t<double>& wav) {
+   InitFbank(samp_freq, // frame opts 
+    frame_shift_ms,
+    frame_length_ms,
+    dither,
+    preemph_coeff,
+    remove_dc_offset,
+    window_type, // e.g. Hamming window
+    round_to_power_of_two,
+    blackman_coeff,
+    snip_edges,
+    allow_downsample,
+    allow_upsample,
+    max_feature_vectors,
+    num_bins, // mel opts
+    low_freq,
+    high_freq,
+    vtln_low,
+    vtln_high,
+    debug_mel,
+    htk_mode,
+    use_energy, // fbank opts
+    energy_floor,
+    raw_energy,
+    htk_compat,
+    use_log_fbank,
+    use_power); 
+   py::array_t<double> result = ComputeFbankStreaming(wav);
+   paddleaudio::KaldiFeatureWrapper::GetInstance()->ResetFbank();
+   return result;
+}
+
+
+void ResetFbank() {
+   paddleaudio::KaldiFeatureWrapper::GetInstance()->ResetFbank();
+}
+
+PYBIND11_MODULE(kaldi_featurepy, m) {
+    m.doc() = "kaldi_feature example";
+    m.def("InitFbank", &InitFbank, "init fbank");
+    m.def("ResetFbank", &ResetFbank, "reset fbank");
+    m.def("ComputeFbank", &ComputeFbank, "compute fbank");
+    m.def("ComputeFbankStreaming", &ComputeFbankStreaming, "compute fbank streaming");
+}

audio/kaldi_frontend/kaldi_feature.h

+#include <pybind11/pybind11.h>
+#include <pybind11/numpy.h>
+
+#include "kaldi_feature_wrapper.h"
+
+namespace py=pybind11;
+
+bool InitFbank(
+    float samp_freq, // frame opts 
+    float frame_shift_ms,
+    float frame_length_ms,
+    float dither,
+    float preemph_coeff,
+    bool remove_dc_offset,
+    std::string window_type, // e.g. Hamming window
+    bool round_to_power_of_two,
+    float blackman_coeff,
+    bool snip_edges,
+    bool allow_downsample,
+    bool allow_upsample,
+    int max_feature_vectors,
+    int num_bins, // mel opts
+    float low_freq,
+    float high_freq,
+    float vtln_low,
+    float vtln_high,
+    bool debug_mel,
+    bool htk_mode,
+    bool use_energy, // fbank opts
+    float energy_floor,
+    bool raw_energy,
+    bool htk_compat,
+    bool use_log_fbank,
+    bool use_power);
+
+py::array_t<double> ComputeFbank(
+    float samp_freq, // frame opts 
+    float frame_shift_ms,
+    float frame_length_ms,
+    float dither,
+    float preemph_coeff,
+    bool remove_dc_offset,
+    std::string window_type, // e.g. Hamming window
+    bool round_to_power_of_two,
+    kaldi::BaseFloat blackman_coeff,
+    bool snip_edges,
+    bool allow_downsample,
+    bool allow_upsample,
+    int max_feature_vectors,
+    int num_bins, // mel opts
+    float low_freq,
+    float high_freq,
+    float vtln_low,
+    float vtln_high,
+    bool debug_mel,
+    bool htk_mode,
+    bool use_energy, // fbank opts
+    float energy_floor,
+    bool raw_energy,
+    bool htk_compat,
+    bool use_log_fbank,
+    bool use_power,
+    const py::array_t<double>& wav);
+
+py::array_t<double> ComputeFbankStreaming(const py::array_t<double>& wav);
+
+void ResetFbank();
+
+py::array_t<double> ComputeFbankStreaming(const py::array_t<double>& wav);
+
+py::array_t<double> TestFun(const py::array_t<double>& wav);

audio/kaldi_frontend/kaldi_feature_wrapper.cc

+#include "kaldi_feature_wrapper.h"
+
+namespace paddleaudio {
+
+KaldiFeatureWrapper* KaldiFeatureWrapper::GetInstance() {
+    static KaldiFeatureWrapper instance;
+    return &instance;
+}
+
+bool KaldiFeatureWrapper::InitFbank(kaldi::FbankOptions opts) {
+  fbank_.reset(new Fbank(opts));
+  return true;
+}
+
+py::array_t<double> KaldiFeatureWrapper::ComputeFbank(const py::array_t<double> wav) {
+    py::buffer_info info = wav.request();
+    kaldi::Vector<kaldi::BaseFloat> input_wav(info.size);
+    double* wav_ptr = (double*)info.ptr;
+    for (int idx = 0; idx < info.size; ++idx) {
+      input_wav(idx) = *wav_ptr;
+      wav_ptr++;
+    }
+
+
+    kaldi::Vector<kaldi::BaseFloat> feats;
+    bool flag = fbank_->ComputeFeature(input_wav, &feats);
+    if (flag == false || feats.Dim() == 0) return py::array_t<double>();
+    auto result = py::array_t<double>(feats.Dim());
+    py::buffer_info xs = result.request();
+    for (int idx = 0; idx < 10; ++idx) {
+       float val = feats(idx);
+       std::cout << val << " ";
+    }
+    std::cout << std::endl;
+    double* res_ptr = (double*)xs.ptr;
+    for (int idx = 0; idx < feats.Dim(); ++idx) {
+        *res_ptr = feats(idx);
+        res_ptr++;
+    }
+
+    return result.reshape({ feats.Dim() / Dim(), Dim()});
+/*
+     py::buffer_info info = wav.request();
+    std::cout << info.size << std::endl;
+    auto result = py::array_t<double>(info.size); 
+   //kaldi::Vector<kaldi::BaseFloat> input_wav(info.size);
+    kaldi::Vector<double> input_wav(info.size);
+    py::buffer_info info_re = result.request();
+    
+    memcpy(input_wav.Data(), (double*)info.ptr, wav.nbytes());
+    memcpy((double*)info_re.ptr, input_wav.Data(), input_wav.Dim()* sizeof(double));
+    return result;
+*/
+}
+
+    
+} // namespace paddleaudio

audio/kaldi_frontend/kaldi_feature_wrapper.h

+
+#include "base/kaldi-common.h"
+#include "kaldi_frontend/feature_common.h"
+#include "feat/feature-fbank.h"
+
+#pragma once
+
+namespace paddleaudio {
+
+typedef StreamingFeatureTpl<kaldi::FbankComputer> Fbank;
+
+class KaldiFeatureWrapper {
+  public:
+    static KaldiFeatureWrapper* GetInstance();
+    bool InitFbank(kaldi::FbankOptions opts);
+    py::array_t<double> ComputeFbank(const py::array_t<double> wav);
+    int Dim() {
+      return fbank_->Dim();
+    }
+    void ResetFbank() {
+      fbank_->Reset();
+    }
+
+  private:
+    std::unique_ptr<paddleaudio::Fbank> fbank_;
+};
+
+}  // namespace paddleaudio
\ No newline at end of file

audio/third_party/CMakeLists.txt

+
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+include_directories(
+${CMAKE_CURRENT_SOURCE_DIR}
+${CMAKE_CURRENT_SOURCE_DIR}/kaldi
+)
+add_subdirectory(kaldi)

audio/third_party/kaldi/CMakeLists.txt

+project(kaldi)
+
+
+add_library(kaldi-base  
+  base/io-funcs.cc
+  base/kaldi-error.cc
+  base/kaldi-math.cc
+  base/kaldi-utils.cc
+  base/timer.cc
+)
+
+add_library(kaldi-util
+  util/kaldi-holder.cc
+  util/kaldi-io.cc
+  util/kaldi-semaphore.cc
+  util/kaldi-table.cc
+  util/kaldi-thread.cc
+  util/parse-options.cc
+  util/simple-io-funcs.cc
+  util/simple-options.cc
+  util/text-utils.cc
+)
+target_link_libraries(kaldi-util PUBLIC kaldi-base kaldi-matrix)
+
+add_library(kaldi-mfcc
+  feat/feature-mfcc.cc
+)
+target_link_libraries(kaldi-mfcc PUBLIC kaldi-feat-common)
+
+add_library(kaldi-fbank
+  feat/feature-fbank.cc
+)
+target_link_libraries(kaldi-fbank PUBLIC kaldi-feat-common)
+
+add_library(kaldi-feat-common
+  feat/wave-reader.cc
+  feat/signal.cc
+  feat/feature-functions.cc
+  feat/feature-window.cc
+  feat/resample.cc
+  feat/mel-computations.cc
+  feat/cmvn.cc
+)
+target_link_libraries(kaldi-feat-common PUBLIC kaldi-base kaldi-matrix kaldi-util)
+
+add_library(kaldi-matrix
+  matrix/compressed-matrix.cc
+  matrix/kaldi-matrix.cc
+  matrix/kaldi-vector.cc
+  matrix/matrix-functions.cc
+  matrix/optimization.cc
+  matrix/packed-matrix.cc
+  matrix/qr.cc
+  matrix/sparse-matrix.cc
+  matrix/sp-matrix.cc
+  matrix/srfft.cc
+  matrix/tp-matrix.cc
+)
+target_link_libraries(kaldi-matrix gfortran kaldi-base libopenblas.a)
+
+
+
+#add_subdirectory(base)
+#add_subdirectory(util)
+#add_subdirectory(feat)
+#add_subdirectory(matrix)

speechx/speechx/kaldi/base/kaldi-types.h

@@ -42,6 +42,8 @@ typedef float   BaseFloat;
 // for discussion on what to do if you need compile kaldi
 // without OpenFST, see the bottom of this this file
 
+#ifndef COMPILE_WITHOUT_OPENFST 
+
 #include <fst/types.h>
 
 namespace kaldi {
@@ -55,9 +57,10 @@ namespace kaldi {
   typedef double double64;
 }  // end namespace kaldi
 
+#else
 // In a theoretical case you decide compile Kaldi without the OpenFST
 // comment the previous namespace statement and uncomment the following
-/*
+
 namespace kaldi {
   typedef int8_t   int8;
   typedef int16_t  int16;
@@ -71,6 +74,6 @@ namespace kaldi {
   typedef float    float32;
   typedef double   double64;
 }  // end namespace kaldi
-*/
+#endif
 
 #endif  // KALDI_BASE_KALDI_TYPES_H_