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/******************************************/
/*
play_raw.c
by Gary P. Scavone, 2001
Play a raw file. It is necessary that the
file be of the same format as defined below.
Uses blocking functionality.
*/
/******************************************/
#include "RtAudio.h"
#include <iostream.h>
#include <stdio.h>
/*
typedef char MY_TYPE;
#define FORMAT RtAudio::RTAUDIO_SINT8
#define SCALE 127.0
typedef signed short MY_TYPE;
#define FORMAT RtAudio::RTAUDIO_SINT16
#define SCALE 32767.0
typedef signed long MY_TYPE;
#define FORMAT RtAudio::RTAUDIO_SINT24
#define SCALE 8388607.0
typedef signed long MY_TYPE;
#define FORMAT RtAudio::RTAUDIO_SINT32
#define SCALE 2147483647.0
*/
typedef float MY_TYPE;
#define FORMAT RtAudio::RTAUDIO_FLOAT32
#define SCALE 1.0;
/*
typedef double MY_TYPE;
#define FORMAT RtAudio::RTAUDIO_FLOAT64
#define SCALE 1.0;
*/
void usage(void) {
/* Error function in case of incorrect command-line
argument specifications
*/
cout << "\nuseage: play_raw N fs file <device>\n";
cout << " where N = number of channels,\n";
cout << " fs = the sample rate, \n";
cout << " file = the raw file to play,\n";
cout << " and device = the device to use (default = 0).\n\n";
exit(0);
}
int main(int argc, char *argv[])
{
int chans, fs, buffer_size, count, stream, device = 0;
long counter = 0;
MY_TYPE *buffer;
char *file;
FILE *fd;
RtAudio *audio;
// minimal command-line checking
if (argc != 4 && argc != 5 ) usage();
chans = (int) atoi(argv[1]);
fs = (int) atoi(argv[2]);
file = argv[3];
if ( argc == 5 )
device = (int) atoi(argv[4]);
fd = fopen(file,"rb");
if (!fd) {
cout << "can't find file!\n";
exit(0);
}
// Open the realtime output device
buffer_size = 512;
try {
audio = new RtAudio(&stream, device, chans, 0, 0,
FORMAT, fs, &buffer_size, 2);
}
catch (RtError &) {
fclose(fd);
exit(EXIT_FAILURE);
}
try {
buffer = (MY_TYPE *) audio->getStreamBuffer(stream);
audio->startStream(stream);
}
catch (RtError &) {
goto cleanup;
}
while (1) {
count = fread(buffer, chans * sizeof(MY_TYPE), buffer_size, fd);
if (count == buffer_size) {
try {
audio->tickStream(stream);
}
catch (RtError &) {
goto cleanup;
}
}
else
break;
counter += buffer_size;
}
try {
audio->stopStream(stream);
}
catch (RtError &) {
}
cleanup:
audio->closeStream(stream);
delete audio;
fclose(fd);
return 0;
}
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