/**********************************************************************************************************
/* Created by Abdel Rabassa (AHR)                                                                         *
/* This subroutine takes as input the number of voice frames encapsulated per packets (a simulation setup * 
/* parameter) and one way ETE delay (a parameter obtain from the simulation on simulation time by parsing *
/* incoming RTCP packets). The output is the AMR-NB frame size depending on the Mouth-to-Ear delay value  *
/* calculated.                                                                                            *
/*                                                                                                        *
/*********************************************************************************************************/



#include <iostream>  
using namespace std;
/* AMR frame sizes in bytes*/
#define AMR_122_FR_SIZE     31
#define AMR_102_FR_SIZE     26
#define AMR_795_FR_SIZE     21
#define AMR_740_FR_SIZE     19
#define AMR_670_FR_SIZE     18
#define AMR_590_FR_SIZE     16
#define AMR_515_FR_SIZE     14
#define AMR_475_FR_SIZE     13

int AMR_fr_size (double M2E_delay)
{

int fr_size;                // voice frame size [bytes]
	
	//Set the AMR frame size depending on the M2E_delay calculated. See documentation for delay limits
	  if (M2E_delay <= 150)
		  fr_size = AMR_122_FR_SIZE;
	  else if (M2E_delay>150 && M2E_delay<=164.3)
		  fr_size = AMR_102_FR_SIZE;
	  else if (M2E_delay>164.3 && M2E_delay<=178.6)
		  fr_size = AMR_795_FR_SIZE;
	  else if (M2E_delay>178.6 && M2E_delay<=192.9)
		  fr_size = AMR_740_FR_SIZE;
	  else if (M2E_delay>192.9 && M2E_delay<=207.2)
		  fr_size = AMR_670_FR_SIZE;
	  else if (M2E_delay>207.2 && M2E_delay<=221.5)
		  fr_size = AMR_590_FR_SIZE;
	  else if (M2E_delay>221.5 && M2E_delay<=235.8)
		  fr_size = AMR_515_FR_SIZE;
	  else if (M2E_delay>235.8)
		  fr_size = AMR_475_FR_SIZE;
return fr_size;
}


void main()
{
	
	const double fr_duration = 0.02; //Frame duration = 20 ms in AMR-NB
	int          fr_packet;          //number of voice frames encapsulated per packet as defined by the modeller
	double       ETE_delay;          //One way network delay [ms]
	double       M2E;                //Mouth to ear delay [ms].
	
	cout<<"Enter the number of frames per packet : ";
	cin>>fr_packet;
    cout<<"Enter One way network delay [ms] : ";
	cin>>ETE_delay;

	
	M2E = (20.5 * fr_packet) + 10 + ETE_delay ;
	
	cout<< "Frame size is: ";
	cout<< AMR_fr_size (M2E)<< " bytes \nFrame duration is: ";
	cout<<fr_duration*1000<< " ms\n";
}