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delta.cc
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delta.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/generation/delta_calculation.h"
#include "SPTK/input/input_source_from_stream.h"
#include "SPTK/utils/misc_utils.h"
#include "SPTK/utils/sptk_utils.h"
namespace {
enum LongOptions {
kMagic = 1000,
};
const int kDefaultNumOrder(24);
void PrintUsage(std::ostream* stream) {
// clang-format off
*stream << std::endl;
*stream << " delta - delta calculation" << std::endl;
*stream << std::endl;
*stream << " usage:" << std::endl;
*stream << " delta [ options ] [ infile ] > stdout" << std::endl;
*stream << " options:" << std::endl;
*stream << " -l l : length of vector ( int)[" << std::setw(5) << std::right << kDefaultNumOrder + 1 << "][ 1 <= l <= ]" << std::endl; // NOLINT
*stream << " -m m : order of vector ( int)[" << std::setw(5) << std::right << "l-1" << "][ 0 <= m <= ]" << std::endl; // NOLINT
*stream << " -d d1 d2 ... : delta coefficients (double)[" << std::setw(5) << std::right << "N/A" << "]" << std::endl; // NOLINT
*stream << " -D D : filename of double type (string)[" << std::setw(5) << std::right << "N/A" << "]" << std::endl; // NOLINT
*stream << " delta coefficients" << std::endl;
*stream << " -r r1 (r2) : width of regression ( int)[" << std::setw(5) << std::right << "N/A" << "]" << std::endl; // NOLINT
*stream << " coefficients" << std::endl;
*stream << " -magic magic : magic number (double)[" << std::setw(5) << std::right << "N/A" << "]" << std::endl; // NOLINT
*stream << " -h : print this message" << std::endl;
*stream << " infile:" << std::endl;
*stream << " static feature vectors (double)[stdin]" << std::endl; // NOLINT
*stream << " stdout:" << std::endl;
*stream << " static and dynamic feature vectors (double)" << std::endl; // NOLINT
*stream << " notice:" << std::endl;
*stream << " -d and -D options can be given multiple times" << std::endl; // NOLINT
*stream << std::endl;
*stream << " SPTK: version " << sptk::kVersion << std::endl;
*stream << std::endl;
// clang-format on
}
} // namespace
/**
* @a delta [ @e option ] [ @e infile ]
*
* - @b -l @e int
* - length of vector @f$(1 \le M + 1)@f$
* - @b -m @e int
* - order of vector @f$(0 \le M)@f$
* - @b -d @e double+
* - delta coefficients
* - @b -D @e str
* - filename of double-type delta coefficients
* - @b -r @e int+
* - width of 1st (and 2nd) regression coefficients
* - @b -magic @e double
* - magic number
* - @b infile @e str
* - double-type static feature vectors
* - @b stdout
* - double-type static and dynamic feature vectors
*
* The below examples calculate the first and second order dynamic features from
* 15-dimensional coefficient vectors in @c data.d.
*
* @code{.sh}
* delta -l 15 -d -0.5 0.0 0.5 -d 1.0 -2.0 1.0 < data.d > data.delta
* @endcode
*
* This is equivalent to
*
* @code{.sh}
* echo -0.5 0.0 0.5 | x2x +ad > delta.win
* echo 1.0 -2.0 1.0 | x2x +ad > accel.win
* delta -l 15 -D delta.win -D accel.win < data.d > data.delta
* @endcode
*
* If data contains a special number such as an unvoiced symbol in a sequence
* of fundamental frequencies, use @b -magic option:
* @code{.sh}
* delta -l 15 -D delta.win -magic -1e+10 < data.lf0 > data.lf0.delta
* @endcode
*
* @b -r option specifies the width of regression coefficients, @f$L^{(1)}@f$
* and @f$L^{(2)}@f$. The first and second derivatives are then calculated as
* follows:
* @f{eqnarray}{
* \Delta^{(1)} x_t &=&
* \frac{\displaystyle\sum_{\tau=-L^{(1)}}^{L^{(1)}} \tau \, x_{t+\tau}}
* {\displaystyle\sum_{\tau=-L^{(1)}}^{L^{(1)}} \tau^2}, \\
* \Delta^{(2)} x_t &=&
* \frac{\displaystyle\sum_{\tau=-L^{(2)}}^{L^{(2)}}
* (a_0 \tau^2 - a_1) x_{t+\tau}}
* {2 \cdot (a_2 a_0 - a_1^2)},
* @f}
* where
* @f{eqnarray}{
* a_0 &=& \displaystyle\sum_{\tau=-L^{(2)}}^{L^{(2)}} 1, \\
* a_1 &=& \displaystyle\sum_{\tau=-L^{(2)}}^{L^{(2)}} \tau^2, \\
* a_2 &=& \displaystyle\sum_{\tau=-L^{(2)}}^{L^{(2)}} \tau^4.
* @f}
*
* @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_order(kDefaultNumOrder);
std::vector<std::vector<double> > window_coefficients(
1, std::vector<double>(1, 1.0));
bool is_regression_specified(false);
double magic_number(0.0);
bool is_magic_number_specified(false);
const struct option long_options[] = {
{"magic", required_argument, NULL, kMagic},
{0, 0, 0, 0},
};
for (;;) {
const int option_char(
getopt_long_only(argc, argv, "l:m:d:D:r:h", long_options, NULL));
if (-1 == option_char) break;
switch (option_char) {
case 'l': {
if (!sptk::ConvertStringToInteger(optarg, &num_order) ||
num_order <= 0) {
std::ostringstream error_message;
error_message
<< "The argument for the -l option must be a positive integer";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
--num_order;
break;
}
case 'm': {
if (!sptk::ConvertStringToInteger(optarg, &num_order) ||
num_order < 0) {
std::ostringstream error_message;
error_message << "The argument for the -m option must be a "
<< "non-negative integer";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
break;
}
case 'd': {
if (is_regression_specified) {
std::ostringstream error_message;
error_message
<< "-d and -r options cannot be specified at the same time";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
std::vector<double> coefficients;
double coefficient;
if (!sptk::ConvertStringToDouble(optarg, &coefficient)) {
std::ostringstream error_message;
error_message << "The argument for the -d option must be numeric";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
coefficients.push_back(coefficient);
while (optind < argc &&
sptk::ConvertStringToDouble(argv[optind], &coefficient)) {
coefficients.push_back(coefficient);
++optind;
}
window_coefficients.push_back(coefficients);
break;
}
case 'D': {
if (is_regression_specified) {
std::ostringstream error_message;
error_message
<< "-D and -r options cannot be specified at the same time";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
std::ifstream ifs;
ifs.open(optarg, std::ios::in | std::ios::binary);
if (ifs.fail()) {
std::ostringstream error_message;
error_message << "Cannot open file " << optarg;
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
std::vector<double> coefficients;
double coefficient;
while (sptk::ReadStream(&coefficient, &ifs)) {
coefficients.push_back(coefficient);
}
window_coefficients.push_back(coefficients);
break;
}
case 'r': {
if (is_regression_specified) {
std::ostringstream error_message;
error_message << "-r option cannot be specified multiple times";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
int n;
// Set first order coefficients.
{
std::vector<double> coefficients;
if (!sptk::ConvertStringToInteger(optarg, &n) ||
!sptk::ComputeFirstOrderRegressionCoefficients(n,
&coefficients)) {
std::ostringstream error_message;
error_message
<< "The argument for the -r option must be positive integer(s)";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
window_coefficients.push_back(coefficients);
}
// Set second order coefficients.
if (optind < argc && sptk::ConvertStringToInteger(argv[optind], &n)) {
std::vector<double> coefficients;
if (!sptk::ComputeSecondOrderRegressionCoefficients(n,
&coefficients)) {
std::ostringstream error_message;
error_message
<< "The argument for the -r option must be positive integer(s)";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
window_coefficients.push_back(coefficients);
++optind;
}
is_regression_specified = true;
break;
}
case kMagic: {
if (!sptk::ConvertStringToDouble(optarg, &magic_number)) {
std::ostringstream error_message;
error_message
<< "The argument for the -magic option must be a number";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
is_magic_number_specified = true;
break;
}
case 'h': {
PrintUsage(&std::cout);
return 0;
}
default: {
PrintUsage(&std::cerr);
return 1;
}
}
}
const int num_input_files(argc - optind);
if (1 < num_input_files) {
std::ostringstream error_message;
error_message << "Too many input files";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
const char* input_file(0 == num_input_files ? NULL : argv[optind]);
if (!sptk::SetBinaryMode()) {
std::ostringstream error_message;
error_message << "Cannot set translation mode";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
std::ifstream ifs;
if (NULL != input_file) {
ifs.open(input_file, std::ios::in | std::ios::binary);
if (ifs.fail()) {
std::ostringstream error_message;
error_message << "Cannot open file " << input_file;
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
}
std::istream& input_stream(ifs.is_open() ? ifs : std::cin);
const int input_length(num_order + 1);
sptk::InputSourceFromStream input_source(false, input_length, &input_stream);
sptk::DeltaCalculation delta_calculation(
num_order, window_coefficients, &input_source, is_magic_number_specified,
magic_number);
if (!delta_calculation.IsValid()) {
std::ostringstream error_message;
error_message << "Failed to initialize DeltaCalculation";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
const int output_length(delta_calculation.GetSize());
std::vector<double> output(output_length);
while (delta_calculation.Get(&output)) {
if (!sptk::WriteStream(0, output_length, output, &std::cout, NULL)) {
std::ostringstream error_message;
error_message << "Failed to write delta";
sptk::PrintErrorMessage("delta", error_message);
return 1;
}
}
return 0;
}