// file: $SPEECH_HOME/util/calculate_lpc/v1.0/calculate_lpc.cc
//

// isip include file
//
#include "calculate_lpc.h"
#include "calculate_lpc_constants.h"
#include <signal_noise_ratio.h>

// main program
//
main(int_4 argc, char_1** argv) {

  // declare command line arguments
  //
  char_1* param_file = (char_1*)NULL;
  char_1* input_file = (char_1*)NULL;
  char_1* output_file = (char_1*)NULL;
  float_4 pre_emph=0;
  int_4 num_chan=0;
  float_4 window=0;
  int_4 sf=0;
  int_4 lp_order=0;
  float_4 center=0;
  int_4 method=0;
  
  // declare a debug parameter
  //
  int_4 debug_level = ISIP_DEBUG_NONE;
  
  // parse the command line
  //
  if (get_parameters_cc(argc, argv, param_file, input_file, output_file,
			debug_level, num_chan, window, pre_emph, lp_order,
			center, sf, method) == ISIP_FALSE) {
    fprintf(stdout, "%s: error in command line arguments\n", argv[0]);
    return ISIP_ERROR;
  }

  // check command line arguments before keep going on
  //
  if (input_file == (char_1*)NULL) {
    fprintf (stdout, "no input file given\n");
    return ISIP_ERROR;
  }

  Signal signal;

  // load in parameter file
  //
  if (param_file != (char_1*)NULL) {
    if (signal.load_params_cc(param_file) != ISIP_TRUE) {
      fprintf(stdout, "error in computing LPC\n");
      return ISIP_ERROR;
    }
  }

  // set command line values - command line values overwrite param
  // file values
  //
  signal.set_values_cc(num_chan, window, pre_emph, lp_order, center, sf);
  signal.set_window_method_cc(method);
  
  // set debug level
  //
  if (debug_level > 0) {
    signal.set_debug_cc(debug_level);
  }

  if (signal.compute_lpc_cc(input_file, output_file) != ISIP_TRUE) {
    fprintf(stdout, "error in computing LPC\n");
    return ISIP_ERROR;
  }
  
  // delete the paramater, attribute, input, and output file
  //
  if (param_file != (char_1*)NULL) {
    delete [] param_file;
  }
  
  if (input_file != (char_1*)NULL) {
    delete [] input_file;
  }
  
  if (output_file != (char_1*)NULL) {
    delete [] output_file;
  }

  // exit gracefully
  //
  return ISIP_NO_ERROR;
}