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/******************************************/
/*
record_raw.c
by Gary P. Scavone, 2001
Records from default input. Takes
number of channels and sample rate
as input arguments. Uses blocking calls.
*/
/******************************************/
#include "RtAudio.h"
#include <iostream>
#include <stdio.h>
/*
typedef char MY_TYPE;
#define FORMAT RTAUDIO_SINT8
typedef signed short MY_TYPE;
#define FORMAT RTAUDIO_SINT16
typedef signed long MY_TYPE;
#define FORMAT RTAUDIO_SINT24
typedef signed long MY_TYPE;
#define FORMAT RTAUDIO_SINT32
*/
typedef float MY_TYPE;
#define FORMAT RTAUDIO_FLOAT32
/*
typedef double MY_TYPE;
#define FORMAT RTAUDIO_FLOAT64
*/
#define TIME 2.0
void usage(void) {
/* Error function in case of incorrect command-line
argument specifications
*/
std::cout << "\nuseage: record_raw N fs <device>\n";
std::cout << " where N = number of channels,\n";
std::cout << " fs = the sample rate,\n";
std::cout << " and device = the device to use (default = 0).\n\n";
exit(0);
}
int main(int argc, char *argv[])
{
int chans, fs, buffer_size, device = 0;
long frames, counter = 0;
MY_TYPE *buffer;
FILE *fd;
RtAudio *audio;
// minimal command-line checking
if (argc != 3 && argc != 4 ) usage();
chans = (int) atoi(argv[1]);
fs = (int) atoi(argv[2]);
if ( argc == 4 )
device = (int) atoi(argv[3]);
// Open the realtime output device
buffer_size = 512;
try {
audio = new RtAudio(0, 0, device, chans,
FORMAT, fs, &buffer_size, 8);
}
catch (RtError &error) {
error.printMessage();
exit(EXIT_FAILURE);
}
fd = fopen("test.raw","wb");
frames = (long) (fs * TIME);
try {
buffer = (MY_TYPE *) audio->getStreamBuffer();
audio->startStream();
}
catch (RtError &error) {
error.printMessage();
goto cleanup;
}
std::cout << "\nRecording for " << TIME << " seconds ... writing file test.raw (buffer size = " << buffer_size << ")." << std::endl;
while (counter < frames) {
try {
audio->tickStream();
}
catch (RtError &error) {
error.printMessage();
goto cleanup;
}
fwrite(buffer, sizeof(MY_TYPE), chans * buffer_size, fd);
counter += buffer_size;
}
try {
audio->stopStream();
}
catch (RtError &error) {
error.printMessage();
}
cleanup:
audio->closeStream();
delete audio;
fclose(fd);
return 0;
}
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