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pipeline-vad.cpp
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#include <eavesdrop-stream.h>
#include <fft-stream.h>
#include <framer-stream.h>
#include <frontend-stream.h>
#include <gain-control-stream.h>
#include <intercept-stream.h>
#include <license-lib.h>
#include <mfcc-stream.h>
#include <nnet-stream.h>
#include <pipeline-vad.h>
#include <raw-energy-vad-stream.h>
#include <raw-nnet-vad-stream.h>
#include <snowboy-error.h>
#include <snowboy-io.h>
#include <snowboy-options.h>
#include <template-detect-stream.h>
#include <universal-detect-stream.h>
#include <vad-state-stream.h>
namespace snowboy {
void PipelineVadOptions::Register(const std::string& prefix, OptionsItf* opts) {
opts->Register(prefix, "sample-rate", "Sampling rate.", &sampleRate);
opts->Register(prefix, "apply-frontend", "If true, apply VQE frontend.", &applyFrontend);
}
void PipelineVad::RegisterOptions(const std::string& p, OptionsItf* opts) {
if (m_isInitialized)
throw snowboy_exception{"pipeline has already been initialized, you have to call RegisterOptions() before Init()."};
auto prefix = p;
if (!prefix.empty()) prefix += ".";
m_pipelineVadOptions.Register(p, opts);
m_gainControlStreamOptions->Register(prefix + "gc", opts);
m_frontendStreamOptions->Register(prefix + "frontend", opts);
m_framerStreamOptions->Register(prefix + "framer", opts);
m_rawEnergyVadStreamOptions->Register(prefix + "vadr1", opts);
m_vadStateStreamOptions->Register(prefix + "vads1", opts);
m_fftStreamOptions->Register(prefix + "fft", opts);
m_mfccStreamOptions->Register(prefix + "mfcc", opts);
m_rawNnetVadStreamOptions->Register(prefix + "vadr2", opts);
m_vadStateStream2Options->Register(prefix + "vads2", opts);
opts->Remove(p, "framer.sample-rate");
opts->Remove(p, "mfcc.sample-rate");
}
int PipelineVad::GetPipelineSampleRate() const {
return m_pipelineVadOptions.sampleRate;
}
bool PipelineVad::Init() {
if (m_isInitialized)
throw snowboy_exception{"class has already been initialized."};
m_framerStreamOptions->sample_rate = m_pipelineVadOptions.sampleRate;
m_mfccStreamOptions->mel_filter.sample_rate = m_pipelineVadOptions.sampleRate;
field_xd1 = m_pipelineVadOptions.applyFrontend;
m_interceptStream.reset(new InterceptStream{});
m_gainControlStream.reset(new GainControlStream{*m_gainControlStreamOptions});
m_frontendStream.reset(new FrontendStream{*m_frontendStreamOptions});
m_framerStream.reset(new FramerStream{*m_framerStreamOptions});
m_rawEnergyVadStream.reset(new RawEnergyVadStream{*m_rawEnergyVadStreamOptions});
m_vadStateStream.reset(new VadStateStream{*m_vadStateStreamOptions});
m_fftStream.reset(new FftStream{*m_fftStreamOptions});
m_mfccStream.reset(new MfccStream{*m_mfccStreamOptions});
m_rawNnetVadStream.reset(new RawNnetVadStream{*m_rawNnetVadStreamOptions});
m_eavesdropStream.reset(new EavesdropStream{nullptr, &m_eavesdropStreamFrameInfoVector});
m_vadStateStream2.reset(new VadStateStream{*m_vadStateStream2Options});
m_gainControlStream->Connect(m_interceptStream.get());
if (!field_xd1) {
m_framerStream->Connect(m_gainControlStream.get());
} else {
m_frontendStream->Connect(m_gainControlStream.get());
m_framerStream->Connect(m_frontendStream.get());
}
m_rawEnergyVadStream->Connect(m_framerStream.get());
m_vadStateStream->Connect(m_rawEnergyVadStream.get());
m_fftStream->Connect(m_vadStateStream.get());
m_mfccStream->Connect(m_fftStream.get());
m_rawNnetVadStream->Connect(m_mfccStream.get());
m_eavesdropStream->Connect(m_rawNnetVadStream.get());
m_vadStateStream2->Connect(m_eavesdropStream.get());
m_vadStateStream->field_x2c = 1;
m_vadStateStream2->field_x2c = 2;
m_isInitialized = true;
return true;
}
bool PipelineVad::Reset() {
CheckSnowboyLicense();
if (m_isInitialized) {
m_interceptStream->Reset();
m_gainControlStream->Reset();
m_frontendStream->Reset();
m_framerStream->Reset();
m_rawEnergyVadStream->Reset();
m_vadStateStream->Reset();
m_fftStream->Reset();
m_mfccStream->Reset();
m_rawNnetVadStream->Reset();
m_eavesdropStream->Reset();
m_vadStateStream2->Reset();
}
m_eavesdropStreamFrameInfoVector.clear();
field_xd0 = true;
return true;
}
std::string PipelineVad::Name() const {
return "PipelineVad";
}
std::string PipelineVad::OptionPrefix() const {
return "vadp";
}
PipelineVad::~PipelineVad() {}
PipelineVad::PipelineVad(const PipelineVadOptions& options) {
m_pipelineVadOptions = options;
CheckSnowboyLicense();
m_gainControlStreamOptions.reset(new GainControlStreamOptions{});
m_gainControlStreamOptions->m_audioGain = 1.0f;
m_frontendStreamOptions.reset(new FrontendStreamOptions{});
m_frontendStreamOptions->ns_power = "1";
m_frontendStreamOptions->dr_power = "1";
m_frontendStreamOptions->agc_level = "2";
m_frontendStreamOptions->agc_power = "12";
m_framerStreamOptions.reset(new FramerStreamOptions{});
m_framerStreamOptions->sample_rate = 16000;
m_framerStreamOptions->frame_length_ms = 25;
m_framerStreamOptions->window_type = "povey";
m_framerStreamOptions->frame_shift_ms = 10;
m_framerStreamOptions->dither_coeff = 1.0f;
m_framerStreamOptions->preemphasis_coeff = 0.97f;
m_framerStreamOptions->subtract_mean = true;
m_rawEnergyVadStreamOptions.reset(new RawEnergyVadStreamOptions{});
m_rawEnergyVadStreamOptions->init_bg_energy = true;
m_rawEnergyVadStreamOptions->bg_energy_threshold = 2.0f;
m_rawEnergyVadStreamOptions->bg_energy_cap = 12.0f;
m_rawEnergyVadStreamOptions->bg_buffer_size = 60;
m_rawEnergyVadStreamOptions->raw_buffer_extra = 0;
m_vadStateStreamOptions.reset(new VadStateStreamOptions{});
m_vadStateStreamOptions->min_non_voice_frames = 100;
m_vadStateStreamOptions->min_voice_frames = 10;
m_vadStateStreamOptions->remove_non_voice = false;
m_vadStateStreamOptions->extra_frame_adjust = 20;
m_fftStreamOptions.reset(new FftStreamOptions{});
m_fftStreamOptions->num_fft_points = -1;
m_fftStreamOptions->method = "srfft";
m_mfccStreamOptions.reset(new MfccStreamOptions{});
m_mfccStreamOptions->mel_filter.num_bins = 23;
m_mfccStreamOptions->mel_filter.num_fft_points = 512;
m_mfccStreamOptions->mel_filter.sample_rate = 16000;
m_mfccStreamOptions->mel_filter.low_frequency = 20.0f;
m_mfccStreamOptions->mel_filter.high_frequency = 8000.0f;
m_mfccStreamOptions->mel_filter.vtln_low_frequency = 100.0f;
m_mfccStreamOptions->mel_filter.vtln_high_frequency = 7500.0f;
m_mfccStreamOptions->mel_filter.vtln_warping_factor = 1.0f;
m_mfccStreamOptions->num_cepstral_coeffs = 13;
m_mfccStreamOptions->use_energy = true;
m_mfccStreamOptions->cepstral_lifter = 22.0f;
m_rawNnetVadStreamOptions.reset(new RawNnetVadStreamOptions{});
m_rawNnetVadStreamOptions->non_voice_index = 0;
m_rawNnetVadStreamOptions->non_voice_threshold = 0.4f;
m_rawNnetVadStreamOptions->model_filename = "";
m_vadStateStream2Options.reset(new VadStateStreamOptions{});
m_vadStateStream2Options->min_non_voice_frames = 100;
m_vadStateStream2Options->min_voice_frames = 10;
m_vadStateStream2Options->remove_non_voice = false;
m_vadStateStream2Options->extra_frame_adjust = 20;
m_eavesdropStreamFrameInfoVector.clear();
field_xd0 = true;
field_xd1 = m_pipelineVadOptions.applyFrontend;
}
void PipelineVad::ApplyFrontend(bool apply) {
if (m_isInitialized == false) {
m_pipelineVadOptions.applyFrontend = apply;
field_xd1 = apply;
return;
}
if (apply != field_xd1) {
field_xd1 = apply;
if (apply == false) {
m_framerStream->Connect(m_gainControlStream.get());
} else {
m_frontendStream->Connect(m_gainControlStream.get());
m_framerStream->Connect(m_frontendStream.get());
}
}
}
int PipelineVad::RunVad(const MatrixBase& data, bool is_end) {
if (!m_isInitialized)
throw snowboy_exception{"pipeline has not been initialized yet."};
std::vector<FrameInfo> info;
info.resize(data.m_rows);
m_interceptStream->SetData(data, info, static_cast<SnowboySignal>(is_end ? 0x30 : 0x20));
do {
Matrix tmat;
std::vector<FrameInfo> tinfo;
auto tres = m_vadStateStream2->Read(&tmat, &tinfo);
m_rawEnergyVadStream->UpdateBackgroundEnergy(m_eavesdropStreamFrameInfoVector);
m_eavesdropStreamFrameInfoVector.clear();
if ((tres & 4) != 0) {
field_xd0 = false;
}
if ((tres & 8) != 0) {
field_xd0 = true;
}
if ((tres & 0x20) != 0) break;
} while (true);
return this->field_xd0 ? -2 : 0;
}
void PipelineVad::SetAudioGain(float gain) {
if (!m_isInitialized)
throw snowboy_exception{"pipeline has not been initialized yet."};
m_gainControlStream->SetAudioGain(gain);
}
void PipelineVad::SetMaxAudioAmplitude(float maxAmplitude) {
if (!m_isInitialized)
throw snowboy_exception{"pipeline has not been initialized yet."};
m_gainControlStream->SetMaxAudioAmplitude(maxAmplitude);
}
} // namespace snowboy