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lspdf.cc
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lspdf.cc
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// ------------------------------------------------------------------------ //
// Copyright 2021 SPTK Working Group //
// //
// 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 <fstream> // std::ifstream
#include <iomanip> // std::setw
#include <iostream> // std::cerr, std::cin, std::cout, std::endl, etc.
#include <sstream> // std::ostringstream
#include <vector> // std::vector
#include "GETOPT/ya_getopt.h"
#include "SPTK/filter/line_spectral_pairs_digital_filter.h"
#include "SPTK/input/input_source_from_stream.h"
#include "SPTK/input/input_source_interpolation.h"
#include "SPTK/input/input_source_preprocessing_for_filter_gain.h"
#include "SPTK/utils/sptk_utils.h"
namespace {
enum LocalGainType {
kLinear = 0,
kLog,
kUnity,
kNumGainTypes,
};
const int kDefaultNumFilterOrder(25);
const int kDefaultFramePeriod(100);
const int kDefaultInterpolationPeriod(1);
const LocalGainType kDefaultGainType(kLinear);
void PrintUsage(std::ostream* stream) {
// clang-format off
*stream << std::endl;
*stream << " lspdf - line spectral pairs digital filter for speech synthesis" << std::endl; // NOLINT
*stream << std::endl;
*stream << " usage:" << std::endl;
*stream << " lspdf [ options ] wfile [ infile ] > stdout" << std::endl;
*stream << " options:" << std::endl;
*stream << " -m m : order of filter coefficients ( int)[" << std::setw(5) << std::right << kDefaultNumFilterOrder << "][ 0 <= m <= ]" << std::endl; // NOLINT
*stream << " -p p : frame period ( int)[" << std::setw(5) << std::right << kDefaultFramePeriod << "][ 0 < p <= ]" << std::endl; // NOLINT
*stream << " -i i : interpolation period ( int)[" << std::setw(5) << std::right << kDefaultInterpolationPeriod << "][ 0 <= i <= p/2 ]" << std::endl; // NOLINT
*stream << " -k k : gain type ( int)[" << std::setw(5) << std::right << kDefaultGainType << "][ 0 <= k <= 2 ]" << std::endl; // NOLINT
*stream << " 0 (linear gain)" << std::endl;
*stream << " 1 (log gain)" << std::endl;
*stream << " 2 (unity gain)" << std::endl;
*stream << " -h : print this message" << std::endl;
*stream << " wfile:" << std::endl;
*stream << " line spectral paris coefficients (double)" << std::endl; // NOLINT
*stream << " infile:" << std::endl;
*stream << " filter input (double)[stdin]" << std::endl; // NOLINT
*stream << " stdout:" << std::endl;
*stream << " filter output (double)" << std::endl; // NOLINT
*stream << " notice:" << std::endl;
*stream << " if i = 0, don't interpolate filter coefficients" << std::endl; // NOLINT
*stream << " if m is large, filter output may be unstable" << std::endl;
*stream << std::endl;
*stream << " SPTK: version " << sptk::kVersion << std::endl;
*stream << std::endl;
// clang-format on
}
} // namespace
/**
* @a lspdf [ @e option ] @e wfile [ @e infile ]
*
* - @b -m @e int
* - order of coefficients @f$(0 \le M)@f$
* - @b -p @e int
* - frame period @f$(1 \le P)@f$
* - @b -i @e int
* - interpolation period @f$(0 \le I \le P/2)@f$
* - @b -k @e int
* - input gain type
* \arg @c 0 linear gain
* \arg @c 1 log gain
* \arg @c 2 unity gain
* - @b wfile @e str
* - double-type LSP coefficients
* - @b infile @e str
* - double-type input sequence
* - @b stdout
* - double-type output sequence
*
* In the below example, an excitation signal generated from pitch information
* is passed through the synthesis filter built from LSP coefficients.
*
* @code{.sh}
* excite < data.pitch | lspdf data.lsp > data.syn
* @endcode
*
* @param[in] argc Number of arguments.
* @param[in] argv Argument vector.
* @return 0 on success, 1 on failure.
*/
int main(int argc, char* argv[]) {
int num_filter_order(kDefaultNumFilterOrder);
int frame_period(kDefaultFramePeriod);
int interpolation_period(kDefaultInterpolationPeriod);
LocalGainType local_gain_type(kDefaultGainType);
for (;;) {
const int option_char(getopt_long(argc, argv, "m:p:i:k:h", NULL, NULL));
if (-1 == option_char) break;
switch (option_char) {
case 'm': {
if (!sptk::ConvertStringToInteger(optarg, &num_filter_order) ||
num_filter_order < 0) {
std::ostringstream error_message;
error_message << "The argument for the -m option must be a "
<< "non-negative integer";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
break;
}
case 'p': {
if (!sptk::ConvertStringToInteger(optarg, &frame_period) ||
frame_period <= 0) {
std::ostringstream error_message;
error_message
<< "The argument for the -p option must be a positive integer";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
break;
}
case 'i': {
if (!sptk::ConvertStringToInteger(optarg, &interpolation_period) ||
interpolation_period < 0) {
std::ostringstream error_message;
error_message << "The argument for the -i option must be a "
<< "non-negative integer";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
break;
}
case 'k': {
const int min(0);
const int max(static_cast<int>(kNumGainTypes) - 1);
int tmp;
if (!sptk::ConvertStringToInteger(optarg, &tmp) ||
!sptk::IsInRange(tmp, min, max)) {
std::ostringstream error_message;
error_message << "The argument for the -k option must be an integer "
<< "in the range of " << min << " to " << max;
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
local_gain_type = static_cast<LocalGainType>(tmp);
break;
}
case 'h': {
PrintUsage(&std::cout);
return 0;
}
default: {
PrintUsage(&std::cerr);
return 1;
}
}
}
if (frame_period / 2 < interpolation_period) {
std::ostringstream error_message;
error_message << "Interpolation period must be equal to or less than half "
<< "frame period";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
// Get input file names.
const char* filter_coefficients_file;
const char* filter_input_file;
const int num_input_files(argc - optind);
if (2 == num_input_files) {
filter_coefficients_file = argv[argc - 2];
filter_input_file = argv[argc - 1];
} else if (1 == num_input_files) {
filter_coefficients_file = argv[argc - 1];
filter_input_file = NULL;
} else {
std::ostringstream error_message;
error_message << "Just two input files, wfile and infile, are required";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
if (!sptk::SetBinaryMode()) {
std::ostringstream error_message;
error_message << "Cannot set translation mode";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
// Open stream for reading filter coefficients.
std::ifstream ifs1;
ifs1.open(filter_coefficients_file, std::ios::in | std::ios::binary);
if (ifs1.fail()) {
std::ostringstream error_message;
error_message << "Cannot open file " << filter_coefficients_file;
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
std::istream& stream_for_filter_coefficients(ifs1);
// Open stream for reading input signals.
std::ifstream ifs2;
if (NULL != filter_input_file) {
ifs2.open(filter_input_file, std::ios::in | std::ios::binary);
if (ifs2.fail()) {
std::ostringstream error_message;
error_message << "Cannot open file " << filter_input_file;
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
}
std::istream& stream_for_filter_input(ifs2.is_open() ? ifs2 : std::cin);
sptk::InputSourcePreprocessingForFilterGain::FilterGainType gain_type;
switch (local_gain_type) {
case kLinear: {
gain_type = sptk::InputSourcePreprocessingForFilterGain::kLinear;
break;
}
case kLog: {
gain_type = sptk::InputSourcePreprocessingForFilterGain::kLog;
break;
}
case kUnity: {
gain_type = sptk::InputSourcePreprocessingForFilterGain::kUnity;
break;
}
default: {
return 1;
}
}
// Prepare variables for filtering.
const int filter_length(num_filter_order + 1);
std::vector<double> filter_coefficients(filter_length);
sptk::InputSourceFromStream input_source(false, filter_length,
&stream_for_filter_coefficients);
sptk::InputSourceInterpolation interpolation(
frame_period, interpolation_period, true, &input_source);
sptk::InputSourcePreprocessingForFilterGain preprocessing(gain_type,
&interpolation);
if (!preprocessing.IsValid()) {
std::ostringstream error_message;
error_message << "Failed to initialize InputSource";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
sptk::LineSpectralPairsDigitalFilter filter(num_filter_order);
sptk::LineSpectralPairsDigitalFilter::Buffer buffer;
if (!filter.IsValid()) {
std::ostringstream error_message;
error_message << "Failed to initialize LineSpectralPairsDigitalFilter";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
double signal;
while (sptk::ReadStream(&signal, &stream_for_filter_input)) {
if (!preprocessing.Get(&filter_coefficients)) {
std::ostringstream error_message;
error_message << "Cannot get filter coefficients";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
if (!filter.Run(filter_coefficients, &signal, &buffer)) {
std::ostringstream error_message;
error_message << "Failed to apply line spectral pairs digital filter";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
if (!sptk::WriteStream(signal, &std::cout)) {
std::ostringstream error_message;
error_message << "Failed to write a filter output";
sptk::PrintErrorMessage("lspdf", error_message);
return 1;
}
}
return 0;
}