// create a callback for generating a block of samples
void audioCB(AudioIOData& io){
UserData& user = *(UserData *)io.user();
float ampL = user.ampL;
float ampR = user.ampR;
// loop through the number of samples in the block
for(int i=0; i<io.framesPerBuffer(); ++i){
float s = io.in(0,i); // get the line-in or microphone sample
io.out(0,i) = s * ampL; // set left output sample
io.out(1,i) = s * ampR; // set right output sample
}
// an alternative way to loop through the sample buffers
while(io()){
io.out(0) *= 0.5; // scale left output sample
io.out(1) *= 0.5; // scale right output sample
}
// if looping again, you must reset the frame iterator
io.frame(0);
while(io()){
io.out(0) *= 2; // scale left output sample
io.out(1) *= 2; // scale right output sample
}
}
