comparison projects/basic_analog_output/main.cpp @ 5:09f03ac40fcc

API improvements and cleanups. Now all common audio command-line options can be parsed automatically.

 
 #include <iostream>
 #include <cstdlib>
 #include <libgen.h>
 #include <signal.h>
+#include <getopt.h>
 #include "../../include/RTAudio.h"
 
 using namespace std;
 
 // Handle Ctrl-C by requesting that the audio rendering stop

 }
 
 // Print usage information
 void usage(const char * processName)
 {
-	cerr << "Usage: " << processName << " [-h] [-v] [-p period] [-f input] [-a input]" << endl;
-	cerr << "   -h:           Print this menu\n";
-	cerr << "   -v:           Enable verbose messages\n";
-	cerr << "   -p period:    Set the period (hardware buffer) size in sensor frames\n";
-	cerr << "   -f frequency: Set frequency of LED fade (default: 1.0)\n";
+	cerr << "Usage: " << processName << " [options]" << endl;
+
+	BeagleRT_usage();
+
+	cerr << "   --frequency [-f] frequency: Set the frequency of the LED fade (default: 1.0)\n";
+	cerr << "   --help [-h]:                Print this menu\n";
 }
 
 int main(int argc, char *argv[])
 {
-	int periodSize = 8;			// Period size in sensor frames
-	int verbose = 0;			// Verbose printing level
-	float frequency = 1.0;		// Frequency of LED fades
+	RTAudioSettings settings;	// Standard audio settings
+	float frequency = 1.0;	// Frequency of LED fades
+
+	struct option customOptions[] =
+	{
+		{"help", 0, NULL, 'h'},
+		{"frequency", 1, NULL, 'f'},
+		{NULL, 0, NULL, 0}
+	};
+
+	// Set default settings
+	BeagleRT_defaultSettings(&settings);
+
+	// In this example, audio isn't used so might as well leave speaker muted
+	settings.beginMuted = 1;
 
 	// Parse command-line arguments
 	while (1) {
 		int c;
-		if ((c = getopt(argc, argv, "hp:vf:")) < 0)
+		if ((c = BeagleRT_getopt_long(argc, argv, "hf:", customOptions, &settings)) < 0)
 				break;
 		switch (c) {
 		case 'h':
 				usage(basename(argv[0]));
 				exit(0);
-		case 'p':
-				periodSize = atoi(optarg);
-				if(periodSize < 1)
-					periodSize = 1;
-				break;
-		case 'v':
-				verbose = 1;
-				break;
 		case 'f':
 				frequency = atof(optarg);
 				if(frequency < 0)
 					frequency = 0;
 				if(frequency > 11025.0)

 				usage(basename(argv[0]));
 				exit(1);
 		}
 	}
 
-
-	// Set verbose logging information (optional by using value > 0; default is 0)
-	setVerboseLevel(verbose);
-
-	if(verbose) {
-		cout << "Starting with period size " << periodSize << " and frequency " << frequency <<  endl;
-	}
-
 	// Initialise the PRU audio device
-	if(initAudio(periodSize, 1, &frequency) != 0) {
+	if(BeagleRT_initAudio(&settings, &frequency) != 0) {
 		cout << "Error: unable to initialise audio" << endl;
 		return -1;
 	}
 
 	// Start the audio device running
-	if(startAudio()) {
+	if(BeagleRT_startAudio()) {
 		cout << "Error: unable to start real-time audio" << endl;
 		return -1;
 	}
 
 	// Set up interrupt handler to catch Control-C

 	while(!gShouldStop) {
 		usleep(100000);
 	}
 
 	// Stop the audio device
-	stopAudio();
-
-	if(verbose) {
-		cout << "Cleaning up..." << endl;
-	}
+	BeagleRT_stopAudio();
 
 	// Clean up any resources allocated for audio
-	cleanupAudio();
+	BeagleRT_cleanupAudio();
 
 	// All done!
 	return 0;
 }