int main()
{
StkFloat d; // sample data
unsigned long inputSize; // size of the input file in sample frames
double inputDuration; // duration of the input file loop
unsigned int channels = 1;
//set global sample rate
Stk::setSampleRate(44100.0);
int nFrames=100000;
FileLoop input;
FileWvOut output;
// open the input and output files, with error checking
try {
// load the input file
input.openFile("rawwaves/Noisy_Miner_chirp_stereo.wav", false);
// open a 16 bit, one channel WAV formatted output
output.openFile("many_chirps.wav", 1, FileWrite::FILE_WAV, Stk::STK_SINT16);
}
catch (StkError &) {
exit(1);
}
// Set input read rate based on the default STK sample rate.
double rate;
double inputRate;
inputRate = input.getFileRate();
rate = inputRate / Stk::sampleRate();
input.setRate( rate );
// Find out the length of the input file
inputSize=input.getSize();
inputDuration = inputSize/inputRate;
std::cout << "input file is " << inputSize << " samples long with a duration of " << inputDuration << " sec." << std::endl;
// Find out how many channels we have.
channels = input.channelsOut();
std::cout << "input file has " << channels << " channels at "<< inputRate << "Hz sample rate " << std::endl;
std::cout << " we want to run a rate of " << Stk::sampleRate() << " and will sample the file by a factor of " << rate << std::endl;
// we want the chirps to be at the same frequency as they were recorded
// so we adjust the looping rate of recorded loop
// if you make the frequency negative, it reverses the loop!
input.setFrequency(1.0/inputDuration);
// run the oscillator for 40000 samples, writing to the output file
for (int i=0; i<nFrames; i++){
try {
d=input.tick(); // read 1 sample from the input file
output.tick(d); // write 1 sample to the output file
}
catch (StkError &) {
exit(1);
}
// print the first 100 samples to the std output for debugging
if (i<10){
std::cout << d << std::endl;
}
}
return 0;
}
