/* Example 7

This example loads a Csound instrument and alters its frequency using SetChannel()

Typical command line to build this:

g++ example7.cpp ../../csound/interfaces/csPerfThread.cpp -o test -I ../../csound/include/ -I ../../csound/interfaces -lcsound64 -lsndfile

RoryWalsh 2016

*/

#include <stdio.h>

#include "csound.hpp"

#include "csPerfThread.hpp"

#include <iostream>

using namespace std;

int main()

{

int freq=0;

bool shouldPlay = true;

//Create an instance of Csound

Csound* csound = new Csound();

//compile instance of csound.

csound->Compile("test8.csd");

//setup performance thread

CsoundPerformanceThread* perfThread = new CsoundPerformanceThread(csound);

//start Csound performance

perfThread->Play();

//keep the application running while performance is ongoing and checks for incoming frequencies

//from the user

while(perfThread->GetStatus() == 0 && shouldPlay)

{

cout << "Enter a frequency and press enter(enter a negative frequency to quit):";

cin >> freq;

//SetChannel() sends values to a channel called "freq". See example7.csd

//tp see how chnget retrieves these values

if(freq>=0)

csound->SetChannel("freq", freq);

else

{

cout << "Stopping Csound";

perfThread->Stop();

shouldPlay = false;

}

}

//free thread object

delete perfThread;

//free Csound object

delete csound;

return 0;

}