// file: clpc_cal_1.cc
//
// this function finds the end sample in the file
//

// system include file
//
#include <stdio.h>

// local include file
//
#include "global_constants.h"
#include "calculate_lpc_constants.h"
#include "calculate_lpc.h"

// function: calculate_end_sample_cc
//
// arguments:
//    char* input_file_a: (input) name of input file
//    float sample_freq_a: (input) sample frequency
//    int num_chans_a: (input) number of channels
//
// return: the end time of the file
//
// this function finds the end sample in the file
//
//
int calculate_end_sample_cc (char* input_file_a, float sample_freq_a,
			     int num_chans_a) {

  if (input_file_a == (char*)NULL) {
    fprintf(stdout, "NULL buffer\n");
    return FALSE;
  }
  
  // open the file
  //
  FILE* fp = fopen (input_file_a, "r");

  if (fp == (FILE*)NULL) {
    fprintf(stdout, "Unable to open %s\n", input_file_a);
    return FALSE;
  }
  
  // rewind the file to the beginning of the file
  //
  rewind(fp);

  // compute the length of file in bytes
  //
  fseek(fp, 0, SEEK_END);
  int total_bytes = ftell(fp);

  // close the file
  //
  fclose (fp);
  
  // return number of frames in the file
  //
  return (int (total_bytes / (num_chans_a * CLPC_BYTES_PER_SAMPLE)) );
}