victor@4: /*
victor@4:  * main.cpp
victor@4:  *
victor@4:  *  Created on: Oct 24, 2014
victor@4:  *      Author: parallels
victor@4:  */
victor@4: 
victor@4: #include <iostream>
victor@4: #include <cstdlib>
victor@4: #include <libgen.h>
victor@4: #include <signal.h>
victor@4: #include "../../include/RTAudio.h"
victor@4: 
victor@4: using namespace std;
victor@4: 
victor@4: // Handle Ctrl-C by requesting that the audio rendering stop
victor@4: void interrupt_handler(int var)
victor@4: {
victor@4: 	gShouldStop = true;
victor@4: }
victor@4: 
victor@4: // Print usage information
victor@4: void usage(const char * processName)
victor@4: {
victor@4: 	cerr << "Usage: " << processName << " [-h] [-v] [-p period] [-f frequency]" << endl;
victor@4: 	cerr << "   -h:           Print this menu\n";
victor@4: 	cerr << "   -v:           Enable verbose messages\n";
victor@4: 	cerr << "   -p period:    Set the period (hardware buffer) size in sensor frames\n";
victor@4: 	cerr << "   -s fftsize:   Set the fSize of the FFT, in samples\n";
victor@4: 	cerr << "   -m:           Enable the matrix (ADC and DAC) as well as audio\n";
victor@4: }
victor@4: 
victor@4: int main(int argc, char *argv[])
victor@4: {
victor@4: 	int periodSize = 8;			// Period size in sensor frames
victor@4: 	int verbose = 0;			// Verbose printing level
victor@4: 	int fftSize = 64;		    // Size of the FFT, in samples
victor@4: 	int useMatrix = 0;			// Whether to use the matrix or just audio
victor@4: 
victor@4: 	// Parse command-line arguments
victor@4: 	while (1) {
victor@4: 		int c;
victor@4: 		if ((c = getopt(argc, argv, "hp:vf:m")) < 0)
victor@4: 				break;
victor@4: 		switch (c) {
victor@4: 		case 'h':
victor@4: 				usage(basename(argv[0]));
victor@4: 				exit(0);
victor@4: 		case 'p':
victor@4: 				periodSize = atoi(optarg);
victor@4: 				if(periodSize < 1)
victor@4: 					periodSize = 1;
victor@4: 				break;
victor@4: 		case 'v':
victor@4: 				verbose = 1;
victor@4: 				break;
victor@4: 		case 's':
victor@4: 				fftSize = atof(optarg);
victor@4: 				break;
victor@4: 		case 'm':
victor@4: 				useMatrix = 1;
victor@4: 				break;
victor@4: 		case '?':
victor@4: 		default:
victor@4: 				usage(basename(argv[0]));
victor@4: 				exit(1);
victor@4: 		}
victor@4: 	}
victor@4: 
victor@4: 
victor@4: 	// Set verbose logging information (optional by using value > 0; default is 0)
victor@4: 	setVerboseLevel(verbose);
victor@4: 
victor@4: 	if(verbose) {
victor@4: 		cout << "Starting with period size " << periodSize << " and FFT size " << fftSize << endl;
victor@4: 		if(useMatrix)
victor@4: 			cout << "Matrix enabled\n";
victor@4: 		else
victor@4: 			cout << "Matrix disabled\n";
victor@4: 	}
victor@4: 
victor@4: 	// Initialise the PRU audio device
victor@4: 	if(initAudio(periodSize, useMatrix, &fftSize) != 0) {
victor@4: 		cout << "Error: unable to initialise audio" << endl;
victor@4: 		return -1;
victor@4: 	}
victor@4: 
victor@4: 	// Start the audio device running
victor@4: 	if(startAudio()) {
victor@4: 		cout << "Error: unable to start real-time audio" << endl;
victor@4: 		return -1;
victor@4: 	}
victor@4: 
victor@4: 	// Set up interrupt handler to catch Control-C
victor@4: 	signal(SIGINT, interrupt_handler);
victor@4: 
victor@4: 	// Run until told to stop
victor@4: 	while(!gShouldStop) {
victor@4: 		usleep(100000);
victor@4: 	}
victor@4: 
victor@4: 	// Stop the audio device
victor@4: 	stopAudio();
victor@4: 
victor@4: 	if(verbose) {
victor@4: 		cout << "Cleaning up..." << endl;
victor@4: 	}
victor@4: 
victor@4: 	// Clean up any resources allocated for audio
victor@4: 	cleanupAudio();
victor@4: 
victor@4: 	// All done!
victor@4: 	return 0;
victor@4: }