[SPTK-CVS] SPTK4/src lsp2lpc.cc,NONE,1.1

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Update of /cvsroot/sp-tk/SPTK4/src
In directory sfp-cvs-1.v30.ch3.sourceforge.com:/tmp/cvs-serv6995

Added Files:
	lsp2lpc.cc 
Log Message:
add lsp2lpc command

--- NEW FILE: lsp2lpc.cc ---
// ----------------------------------------------------------------- //
//             The Speech Signal Processing Toolkit (SPTK)           //
//             developed by SPTK Working Group                       //
//             http://sp-tk.sourceforge.net/                         //
// ----------------------------------------------------------------- //
//                                                                   //
//  Copyright (c) 1984-2007  Tokyo Institute of Technology           //
//                           Interdisciplinary Graduate School of    //
//                           Science and Engineering                 //
//                                                                   //
//                1996-2017  Nagoya Institute of Technology          //
//                           Department of Computer Science          //
//                                                                   //
// All rights reserved.                                              //
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// without modification, are permitted provided that the following   //
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//   notice, this list of conditions and the following disclaimer.   //
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//   with the distribution.                                          //
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// ----------------------------------------------------------------- //

#include <getopt.h>
#include <algorithm>
#include <cmath>
#include <fstream>
#include <functional>
#include <iostream>
#include <sstream>
#include <vector>

#include "line_spectral_pairs_to_linear_predictive_coefficients.h"
#include "sptk_utils.h"

namespace {

enum InputGainTypes {
  kLinearGain = 0,
  kLogGain,
  kWithoutGain,
  kNumInputGainTypes
};

enum InputFormats {
  kNormalizedFrequencyInRadians = 0,
  kNormalizedFrequencyInCycles,
  kFrequecnyInkHz,
  kFrequecnyInHz,
  kNumInputFormats
};

const int kDefaultNumOrder(25);
const double kDefaultSamplingFrequency(10.0);
const InputGainTypes kDefaultInputGainType(kLinearGain);
const InputFormats kDefaultInputFormat(kNormalizedFrequencyInRadians);

void PrintUsage(std::ostream* stream) {
  // clang-format off
  *stream << std::endl;
  *stream << " lsp2lpc - transform line spectral pairs to " << std::endl;
  *stream << "           linear predictive coefficients" << std::endl;
  *stream << std::endl;
  *stream << "  usage:" << std::endl;
  *stream << "       lsp2lpc [ options ] [ infile ] > stdout" << std::endl;
  *stream << "  options:" << std::endl;
  *stream << "       -m m  : order of line spectral pairs         [" << kDefaultNumOrder << "]" << std::endl;  // NOLINT
  *stream << "       -s s  : sampling frequency                   [" << kDefaultSamplingFrequency << "]" << std::endl;  // NOLINT
  *stream << "       -k k  : input gain type                      [" << kDefaultInputGainType << "]" << std::endl;  // NOLINT
  *stream << "                 0 (linear gain)" << std::endl;
  *stream << "                 1 (log gain)" << std::endl;
  *stream << "                 2 (without gain)" << std::endl;
  *stream << "       -q q  : input format                         [" << kDefaultInputFormat << "]" << std::endl;  // NOLINT
  *stream << "                 0 (normalized frequency [0...pi])" << std::endl;
  *stream << "                 1 (normalized frequency [0...1/2])" << std::endl;
  *stream << "                 2 (frequency [kHz])" << std::endl;
  *stream << "                 3 (frequency [Hz])" << std::endl;
  *stream << "       -h    : print this message" << std::endl;
  *stream << "  infile:" << std::endl;
  *stream << "       line spectral pairs (double)                 [stdin]" << std::endl;  // NOLINT
  *stream << "  stdout:" << std::endl;
  *stream << "       linear predictive coefficients (double)" << std::endl;
  *stream << "  notice:" << std::endl;
  *stream << "       if k is 2, input length in a frame is assumed to be m instead of m+1" << std::endl;  // NOLINT
  *stream << std::endl;
  *stream << " SPTK: version " << sptk::kVersion << std::endl;
  *stream << std::endl;
  // clang-format on
}

}  // namespace

int main(int argc, char* argv[]) {
  int num_order(kDefaultNumOrder);
  double sampling_frequency(kDefaultSamplingFrequency);
  InputGainTypes input_gain_type(kDefaultInputGainType);
  InputFormats input_format(kDefaultInputFormat);

  for (;;) {
    const int option_char(getopt_long(argc, argv, "m:s:k:q:h", NULL, NULL));
    if (-1 == option_char) break;

    switch (option_char) {
      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("lsp2lpc", error_message);
          return 1;
        }
        break;
      }
      case 's': {
        if (!sptk::ConvertStringToDouble(optarg, &sampling_frequency) ||
            sampling_frequency <= 0.0) {
          std::ostringstream error_message;
          error_message
              << "The argument for the -s option must be a positive number";
          sptk::PrintErrorMessage("lsp2lpc", error_message);
          return 1;
        }
        break;
      }
      case 'k': {
        const int min(0);
        const int max(static_cast<int>(kNumInputGainTypes) - 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("lsp2lpc", error_message);
          return 1;
        }
        input_gain_type = static_cast<InputGainTypes>(tmp);
        break;
      }
      case 'q': {
        const int min(0);
        const int max(static_cast<int>(kNumInputFormats) - 1);
        int tmp;
        if (!sptk::ConvertStringToInteger(optarg, &tmp) ||
            !sptk::IsInRange(tmp, min, max)) {
          std::ostringstream error_message;
          error_message << "The argument for the -q option must be an integer "
                        << "in the range of " << min << " to " << max;
          sptk::PrintErrorMessage("lsp2lpc", error_message);
          return 1;
        }
        input_format = static_cast<InputFormats>(tmp);
        break;
      }
      case 'h': {
        PrintUsage(&std::cout);
        return 0;
      }
      default: {
        PrintUsage(&std::cerr);
        return 1;
      }
    }
  }

  // get input file
  const char* input_file((optind < argc) ? argv[argc - 1] : NULL);

  // open stream
  std::ifstream ifs;
  ifs.open(input_file, std::ios::in | std::ios::binary);
  if (ifs.fail() && NULL != input_file) {
    std::ostringstream error_message;
    error_message << "Cannot open file " << input_file;
    sptk::PrintErrorMessage("lsp2lpc", error_message);
    return 1;
  }
  std::istream& input_stream(ifs.fail() ? std::cin : ifs);

  // prepare to transform
  sptk::LineSpectralPairsToLinearPredictiveCoefficients
      line_spectral_pairs_to_linear_predictive_coefficients(num_order);
  sptk::LineSpectralPairsToLinearPredictiveCoefficients::Buffer buffer;
  if (!line_spectral_pairs_to_linear_predictive_coefficients.IsValid()) {
    std::ostringstream error_message;
    error_message << "Failed to set condition for transformation";
    sptk::PrintErrorMessage("lsp2lpc", error_message);
    return 1;
  }

  const int length(num_order + 1);
  const int read_size(kWithoutGain == input_gain_type ? num_order : length);
  const int read_point(kWithoutGain == input_gain_type ? 1 : 0);
  std::vector<double> line_spectral_pairs(length);
  std::vector<double> linear_predictive_coefficients(length);

  while (sptk::ReadStream(false, 0, read_point, read_size, &line_spectral_pairs,
                          &input_stream)) {
    switch (input_gain_type) {
      case kLinearGain: {
        // nothing to do
        break;
      }
      case kLogGain: {
        line_spectral_pairs[0] = std::exp(line_spectral_pairs[0]);
        break;
      }
      case kWithoutGain: {
        line_spectral_pairs[0] = 1.0;
        break;
      }
      default: { break; }
    }

    switch (input_format) {
      case kNormalizedFrequencyInRadians: {
        std::transform(
            line_spectral_pairs.begin() + 1, line_spectral_pairs.end(),
            line_spectral_pairs.begin() + 1,
            std::bind1st(std::multiplies<double>(), 1.0 / sptk::kTwoPi));
        break;
      }
      case kNormalizedFrequencyInCycles: {
        // nothing to do
        break;
      }
      case kFrequecnyInkHz: {
        std::transform(
            line_spectral_pairs.begin() + 1, line_spectral_pairs.end(),
            line_spectral_pairs.begin() + 1,
            std::bind1st(std::multiplies<double>(), 1.0 / sampling_frequency));
        break;
      }
      case kFrequecnyInHz: {
        std::transform(line_spectral_pairs.begin() + 1,
                       line_spectral_pairs.end(),
                       line_spectral_pairs.begin() + 1,
                       std::bind1st(std::multiplies<double>(),
                                    0.001 / sampling_frequency));
        break;
      }
      default: { break; }
    }

    if (!line_spectral_pairs_to_linear_predictive_coefficients.Run(
            line_spectral_pairs, &linear_predictive_coefficients, &buffer)) {
      std::ostringstream error_message;
      error_message << "Failed to transform line spectral pairs to "
                    << "linear predictive coefficients";
      sptk::PrintErrorMessage("lsp2lpc", error_message);
      return 1;
    }

    if (!sptk::WriteStream(0, length, linear_predictive_coefficients,
                           &std::cout)) {
      std::ostringstream error_message;
      error_message << "Failed to write linear predictive coefficients";
      sptk::PrintErrorMessage("lsp2lpc", error_message);
      return 1;
    }
  }

  return 0;
}