/*
 * Audio Packet Removal
 *
 *  Created on: Nov 8, 2015
 *      Author: Agustín J. González
 */

#include <iostream>
#include <vector>
#include <stdlib.h>
#include <time.h>
#include <iostream>
#include <fstream>

using namespace std;

int main (int argc, char * argv[]) {
  float p;
  if (argc < 4) exit(-1);
  if (argc >1)
	  p = atof(argv[1]);
  srand(time(NULL)); // semilla números aleatorios
  ifstream audioInFile;
  audioInFile.open (argv[2], ios::in | ios::binary);
  ofstream audioOutFile;
  audioOutFile.open (argv[3], ios::out | ios::trunc | ios::binary);
  while (!audioInFile.eof()) {
	  short s, zero=0;
      bool loss =static_cast <float> (rand())/RAND_MAX < p;
      for (int i=0; i <160; i++) {
    	  audioInFile.read((char *)&s, sizeof(s));
    	  if (audioInFile.eof()) break;
    	  if (loss)
         	  audioOutFile.write((char*)&zero, sizeof(zero));
    	  else
    		  audioOutFile.write((char*)&s,sizeof(s));
      }
  }
  audioInFile.close();
  audioOutFile.close();
}